diff --git a/src/main/java/net/onrc/onos/apps/bgproute/BgpPeer.java b/src/main/java/net/onrc/onos/apps/bgproute/BgpPeer.java
index 32ea288..d103918 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/BgpPeer.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/BgpPeer.java
@@ -7,20 +7,20 @@
 import com.google.common.net.InetAddresses;
 
 public class BgpPeer {
-	private final String interfaceName;
-	private final InetAddress ipAddress;
-	
-	public BgpPeer(@JsonProperty("interface") String interfaceName,
-				   @JsonProperty("ipAddress") String ipAddress) {
-		this.interfaceName = interfaceName;
-		this.ipAddress = InetAddresses.forString(ipAddress);
-	}
-	
-	public String getInterfaceName() {
-		return interfaceName;
-	}
+    private final String interfaceName;
+    private final InetAddress ipAddress;
 
-	public InetAddress getIpAddress() {
-		return ipAddress;
-	}
+    public BgpPeer(@JsonProperty("interface") String interfaceName,
+                   @JsonProperty("ipAddress") String ipAddress) {
+        this.interfaceName = interfaceName;
+        this.ipAddress = InetAddresses.forString(ipAddress);
+    }
+
+    public String getInterfaceName() {
+        return interfaceName;
+    }
+
+    public InetAddress getIpAddress() {
+        return ipAddress;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/BgpRoute.java b/src/main/java/net/onrc/onos/apps/bgproute/BgpRoute.java
index 881e925..b2fcbc0 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/BgpRoute.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/BgpRoute.java
@@ -73,1318 +73,1310 @@
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
 
 public class BgpRoute implements IFloodlightModule, IBgpRouteService,
-									IArpRequester,
-									IOFSwitchListener, IConfigInfoService {
+        IArpRequester,
+        IOFSwitchListener, IConfigInfoService {
 
-	private final static Logger log = LoggerFactory.getLogger(BgpRoute.class);
+    private final static Logger log = LoggerFactory.getLogger(BgpRoute.class);
 
-	private IFloodlightProviderService floodlightProvider;
-	private ILinkDiscoveryService linkDiscoveryService;
-	private IRestApiService restApi;
-	private IProxyArpService proxyArp;
+    private IFloodlightProviderService floodlightProvider;
+    private ILinkDiscoveryService linkDiscoveryService;
+    private IRestApiService restApi;
+    private IProxyArpService proxyArp;
 
-	private IPatriciaTrie<RibEntry> ptree;
-	private IPatriciaTrie<Interface> interfacePtrie;
-	private BlockingQueue<RibUpdate> ribUpdates;
+    private IPatriciaTrie<RibEntry> ptree;
+    private IPatriciaTrie<Interface> interfacePtrie;
+    private BlockingQueue<RibUpdate> ribUpdates;
 
-	private String bgpdRestIp;
-	private String routerId;
-	private String configFilename = "config.json";
+    private String bgpdRestIp;
+    private String routerId;
+    private String configFilename = "config.json";
 
-	//We need to identify our flows somehow. But like it says in LearningSwitch.java,
-	//the controller/OS should hand out cookie IDs to prevent conflicts.
-	private final long APP_COOKIE = 0xa0000000000000L;
-	//Cookie for flows that do L2 forwarding within SDN domain to egress routers
-	private final long L2_FWD_COOKIE = APP_COOKIE + 1;
-	//Cookie for flows in ingress switches that rewrite the MAC address
-	private final long MAC_RW_COOKIE = APP_COOKIE + 2;
-	//Cookie for flows that setup BGP paths
-	private final long BGP_COOKIE = APP_COOKIE + 3;
-	//Forwarding uses priority 0, and the mac rewrite entries in ingress switches
-	//need to be higher priority than this otherwise the rewrite may not get done
-	private final short SDNIP_PRIORITY = 10;
-	private final short ARP_PRIORITY = 20;
+    //We need to identify our flows somehow. But like it says in LearningSwitch.java,
+    //the controller/OS should hand out cookie IDs to prevent conflicts.
+    private final long APP_COOKIE = 0xa0000000000000L;
+    //Cookie for flows that do L2 forwarding within SDN domain to egress routers
+    private final long L2_FWD_COOKIE = APP_COOKIE + 1;
+    //Cookie for flows in ingress switches that rewrite the MAC address
+    private final long MAC_RW_COOKIE = APP_COOKIE + 2;
+    //Cookie for flows that setup BGP paths
+    private final long BGP_COOKIE = APP_COOKIE + 3;
+    //Forwarding uses priority 0, and the mac rewrite entries in ingress switches
+    //need to be higher priority than this otherwise the rewrite may not get done
+    private final short SDNIP_PRIORITY = 10;
+    private final short ARP_PRIORITY = 20;
 
-	private final short BGP_PORT = 179;
+    private final short BGP_PORT = 179;
 
-	private final int TOPO_DETECTION_WAIT = 2; //seconds
+    private final int TOPO_DETECTION_WAIT = 2; //seconds
 
-	//Configuration stuff
-	private List<String> switches;
-	private Map<String, Interface> interfaces;
-	private Map<InetAddress, BgpPeer> bgpPeers;
-	private SwitchPort bgpdAttachmentPoint;
-	private MACAddress bgpdMacAddress;
-	private short vlan;
+    //Configuration stuff
+    private List<String> switches;
+    private Map<String, Interface> interfaces;
+    private Map<InetAddress, BgpPeer> bgpPeers;
+    private SwitchPort bgpdAttachmentPoint;
+    private MACAddress bgpdMacAddress;
+    private short vlan;
 
-	//True when all switches have connected
-	private volatile boolean switchesConnected = false;
-	//True when we have a full mesh of shortest paths between gateways
-	private volatile boolean topologyReady = false;
+    //True when all switches have connected
+    private volatile boolean switchesConnected = false;
+    //True when we have a full mesh of shortest paths between gateways
+    private volatile boolean topologyReady = false;
 
-	private ArrayList<LDUpdate> linkUpdates;
-	private SingletonTask topologyChangeDetectorTask;
+    private ArrayList<LDUpdate> linkUpdates;
+    private SingletonTask topologyChangeDetectorTask;
 
-	private SetMultimap<InetAddress, RibUpdate> prefixesWaitingOnArp;
+    private SetMultimap<InetAddress, RibUpdate> prefixesWaitingOnArp;
 
-	private Map<InetAddress, Path> pathsWaitingOnArp;
+    private Map<InetAddress, Path> pathsWaitingOnArp;
 
-	private ExecutorService bgpUpdatesExecutor;
+    private ExecutorService bgpUpdatesExecutor;
 
-	private Map<InetAddress, Path> pushedPaths;
-	private Map<Prefix, Path> prefixToPath;
-//	private Multimap<Prefix, PushedFlowMod> pushedFlows;
-	private Multimap<Prefix, FlowId> pushedFlowIds;
+    private Map<InetAddress, Path> pushedPaths;
+    private Map<Prefix, Path> prefixToPath;
+    //  private Multimap<Prefix, PushedFlowMod> pushedFlows;
+    private Multimap<Prefix, FlowId> pushedFlowIds;
 
-	private FlowCache flowCache;
+    private FlowCache flowCache;
 
-	// TODO: Fix for the new Topology Network Graph
-	// private volatile Topology topology = null;
+    // TODO: Fix for the new Topology Network Graph
+    // private volatile Topology topology = null;
 
-	private class TopologyChangeDetector implements Runnable {
-		@Override
-		public void run() {
-			log.debug("Running topology change detection task");
-			synchronized (linkUpdates) {
-				//This is the model the REST API uses to retrieve network graph info
-			    // TODO: Fix the code below after topoLinkService was removed
-			    /*
-				ITopoLinkService topoLinkService = new TopoLinkServiceImpl();
+    private class TopologyChangeDetector implements Runnable {
+        @Override
+        public void run() {
+            log.debug("Running topology change detection task");
+            synchronized (linkUpdates) {
+                //This is the model the REST API uses to retrieve network graph info
+                // TODO: Fix the code below after topoLinkService was removed
+                /*
+                ITopoLinkService topoLinkService = new TopoLinkServiceImpl();
 
-				List<Link> activeLinks = topoLinkService.getActiveLinks();
+                List<Link> activeLinks = topoLinkService.getActiveLinks();
 
-				Iterator<LDUpdate> it = linkUpdates.iterator();
-				while (it.hasNext()){
-					LDUpdate ldu = it.next();
-					Link l = new Link(ldu.getSrc(), ldu.getSrcPort(),
-							ldu.getDst(), ldu.getDstPort());
+                Iterator<LDUpdate> it = linkUpdates.iterator();
+                while (it.hasNext()){
+                    LDUpdate ldu = it.next();
+                    Link l = new Link(ldu.getSrc(), ldu.getSrcPort(),
+                            ldu.getDst(), ldu.getDstPort());
 
-					if (activeLinks.contains(l)){
-						it.remove();
-					}
-				}
-			    */
-			}
+                    if (activeLinks.contains(l)){
+                        it.remove();
+                    }
+                }
+                */
+            }
 
-			if (!topologyReady) {
-				if (linkUpdates.isEmpty()){
-					//All updates have been seen in network map.
-					//We can check if topology is ready
-					log.debug("No known changes outstanding. Checking topology now");
-					checkStatus();
-				}
-				else {
-					//We know of some link updates that haven't propagated to the database yet
-					log.debug("Some changes not found in network map - {} links missing", linkUpdates.size());
-					topologyChangeDetectorTask.reschedule(TOPO_DETECTION_WAIT, TimeUnit.SECONDS);
-				}
-			}
-		}
-	}
+            if (!topologyReady) {
+                if (linkUpdates.isEmpty()) {
+                    //All updates have been seen in network map.
+                    //We can check if topology is ready
+                    log.debug("No known changes outstanding. Checking topology now");
+                    checkStatus();
+                } else {
+                    //We know of some link updates that haven't propagated to the database yet
+                    log.debug("Some changes not found in network map - {} links missing", linkUpdates.size());
+                    topologyChangeDetectorTask.reschedule(TOPO_DETECTION_WAIT, TimeUnit.SECONDS);
+                }
+            }
+        }
+    }
 
-	private void readConfiguration(String configFilename){
-		File gatewaysFile = new File(configFilename);
-		ObjectMapper mapper = new ObjectMapper();
+    private void readConfiguration(String configFilename) {
+        File gatewaysFile = new File(configFilename);
+        ObjectMapper mapper = new ObjectMapper();
 
-		try {
-			Configuration config = mapper.readValue(gatewaysFile, Configuration.class);
+        try {
+            Configuration config = mapper.readValue(gatewaysFile, Configuration.class);
 
-			switches = config.getSwitches();
-			interfaces = new HashMap<String, Interface>();
-			for (Interface intf : config.getInterfaces()){
-				interfaces.put(intf.getName(), intf);
-			}
-			bgpPeers = new HashMap<InetAddress, BgpPeer>();
-			for (BgpPeer peer : config.getPeers()){
-				bgpPeers.put(peer.getIpAddress(), peer);
-			}
+            switches = config.getSwitches();
+            interfaces = new HashMap<String, Interface>();
+            for (Interface intf : config.getInterfaces()) {
+                interfaces.put(intf.getName(), intf);
+            }
+            bgpPeers = new HashMap<InetAddress, BgpPeer>();
+            for (BgpPeer peer : config.getPeers()) {
+                bgpPeers.put(peer.getIpAddress(), peer);
+            }
 
-			bgpdAttachmentPoint = new SwitchPort(
-					new Dpid(config.getBgpdAttachmentDpid()),
-					new Port(config.getBgpdAttachmentPort()));
+            bgpdAttachmentPoint = new SwitchPort(
+                    new Dpid(config.getBgpdAttachmentDpid()),
+                    new Port(config.getBgpdAttachmentPort()));
 
-			bgpdMacAddress = config.getBgpdMacAddress();
-			vlan = config.getVlan();
-		} catch (JsonParseException e) {
-			log.error("Error in JSON file", e);
-			System.exit(1);
-		} catch (JsonMappingException e) {
-			log.error("Error in JSON file", e);
-			System.exit(1);
-		} catch (IOException e) {
-			log.error("Error reading JSON file", e);
-			System.exit(1);
-		}
+            bgpdMacAddress = config.getBgpdMacAddress();
+            vlan = config.getVlan();
+        } catch (JsonParseException e) {
+            log.error("Error in JSON file", e);
+            System.exit(1);
+        } catch (JsonMappingException e) {
+            log.error("Error in JSON file", e);
+            System.exit(1);
+        } catch (IOException e) {
+            log.error("Error reading JSON file", e);
+            System.exit(1);
+        }
 
-		//Populate the interface Patricia Trie
-		for (Interface intf : interfaces.values()) {
-			Prefix prefix = new Prefix(intf.getIpAddress().getAddress(), intf.getPrefixLength());
-			interfacePtrie.put(prefix, intf);
-		}
-	}
+        //Populate the interface Patricia Trie
+        for (Interface intf : interfaces.values()) {
+            Prefix prefix = new Prefix(intf.getIpAddress().getAddress(), intf.getPrefixLength());
+            interfacePtrie.put(prefix, intf);
+        }
+    }
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-		Collection<Class<? extends IFloodlightService>> l
-			= new ArrayList<Class<? extends IFloodlightService>>();
-		l.add(IBgpRouteService.class);
-		l.add(IConfigInfoService.class);
-		return l;
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleServices() {
+        Collection<Class<? extends IFloodlightService>> l
+                = new ArrayList<Class<? extends IFloodlightService>>();
+        l.add(IBgpRouteService.class);
+        l.add(IConfigInfoService.class);
+        return l;
+    }
 
-	@Override
-	public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
-		Map<Class<? extends IFloodlightService>, IFloodlightService> m
-			= new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
-		m.put(IBgpRouteService.class, this);
-		m.put(IConfigInfoService.class, this);
-		return m;
-	}
+    @Override
+    public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
+        Map<Class<? extends IFloodlightService>, IFloodlightService> m
+                = new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
+        m.put(IBgpRouteService.class, this);
+        m.put(IConfigInfoService.class, this);
+        return m;
+    }
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
-		Collection<Class<? extends IFloodlightService>> l
-			= new ArrayList<Class<? extends IFloodlightService>>();
-		l.add(IFloodlightProviderService.class);
-		l.add(IRestApiService.class);
-		return l;
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
+        Collection<Class<? extends IFloodlightService>> l
+                = new ArrayList<Class<? extends IFloodlightService>>();
+        l.add(IFloodlightProviderService.class);
+        l.add(IRestApiService.class);
+        return l;
+    }
 
-	@Override
-	public void init(FloodlightModuleContext context)
-			throws FloodlightModuleException {
+    @Override
+    public void init(FloodlightModuleContext context)
+            throws FloodlightModuleException {
 
-		ptree = new PatriciaTrie<RibEntry>(32);
-		interfacePtrie = new PatriciaTrie<Interface>(32);
+        ptree = new PatriciaTrie<RibEntry>(32);
+        interfacePtrie = new PatriciaTrie<Interface>(32);
 
-		ribUpdates = new LinkedBlockingQueue<RibUpdate>();
+        ribUpdates = new LinkedBlockingQueue<RibUpdate>();
 
-		// Register floodlight provider and REST handler.
-		floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
-		linkDiscoveryService = context.getServiceImpl(ILinkDiscoveryService.class);
-		restApi = context.getServiceImpl(IRestApiService.class);
-		proxyArp = context.getServiceImpl(IProxyArpService.class);
+        // Register floodlight provider and REST handler.
+        floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
+        linkDiscoveryService = context.getServiceImpl(ILinkDiscoveryService.class);
+        restApi = context.getServiceImpl(IRestApiService.class);
+        proxyArp = context.getServiceImpl(IProxyArpService.class);
 
-		linkUpdates = new ArrayList<LDUpdate>();
-		ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
-		topologyChangeDetectorTask = new SingletonTask(executor, new TopologyChangeDetector());
+        linkUpdates = new ArrayList<LDUpdate>();
+        ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
+        topologyChangeDetectorTask = new SingletonTask(executor, new TopologyChangeDetector());
 
-		pathsWaitingOnArp = new HashMap<InetAddress, Path>();
-		prefixesWaitingOnArp = Multimaps.synchronizedSetMultimap(
-				HashMultimap.<InetAddress, RibUpdate>create());
+        pathsWaitingOnArp = new HashMap<InetAddress, Path>();
+        prefixesWaitingOnArp = Multimaps.synchronizedSetMultimap(
+                HashMultimap.<InetAddress, RibUpdate>create());
 
-		pushedPaths = new HashMap<InetAddress, Path>();
-		prefixToPath = new HashMap<Prefix, Path>();
-//		pushedFlows = HashMultimap.<Prefix, PushedFlowMod>create();
-		pushedFlowIds = HashMultimap.<Prefix, FlowId>create();
+        pushedPaths = new HashMap<InetAddress, Path>();
+        prefixToPath = new HashMap<Prefix, Path>();
+//              pushedFlows = HashMultimap.<Prefix, PushedFlowMod>create();
+        pushedFlowIds = HashMultimap.<Prefix, FlowId>create();
 
-		flowCache = new FlowCache(floodlightProvider);
+        flowCache = new FlowCache(floodlightProvider);
 
-		bgpUpdatesExecutor = Executors.newSingleThreadExecutor(
-				new ThreadFactoryBuilder().setNameFormat("bgp-updates-%d").build());
+        bgpUpdatesExecutor = Executors.newSingleThreadExecutor(
+                new ThreadFactoryBuilder().setNameFormat("bgp-updates-%d").build());
 
-		//Read in config values
-		bgpdRestIp = context.getConfigParams(this).get("BgpdRestIp");
-		if (bgpdRestIp == null){
-			log.error("BgpdRestIp property not found in config file");
-			System.exit(1);
-		}
-		else {
-			log.info("BgpdRestIp set to {}", bgpdRestIp);
-		}
+        //Read in config values
+        bgpdRestIp = context.getConfigParams(this).get("BgpdRestIp");
+        if (bgpdRestIp == null) {
+            log.error("BgpdRestIp property not found in config file");
+            System.exit(1);
+        } else {
+            log.info("BgpdRestIp set to {}", bgpdRestIp);
+        }
 
-		routerId = context.getConfigParams(this).get("RouterId");
-		if (routerId == null){
-			log.error("RouterId property not found in config file");
-			System.exit(1);
-		}
-		else {
-			log.info("RouterId set to {}", routerId);
-		}
+        routerId = context.getConfigParams(this).get("RouterId");
+        if (routerId == null) {
+            log.error("RouterId property not found in config file");
+            System.exit(1);
+        } else {
+            log.info("RouterId set to {}", routerId);
+        }
 
-		String configFilenameParameter = context.getConfigParams(this).get("configfile");
-		if (configFilenameParameter != null){
-			configFilename = configFilenameParameter;
-		}
-		log.debug("Config file set to {}", configFilename);
+        String configFilenameParameter = context.getConfigParams(this).get("configfile");
+        if (configFilenameParameter != null) {
+            configFilename = configFilenameParameter;
+        }
+        log.debug("Config file set to {}", configFilename);
 
-		readConfiguration(configFilename);
-	}
+        readConfiguration(configFilename);
+    }
 
-	@Override
-	public void startUp(FloodlightModuleContext context) {
-		restApi.addRestletRoutable(new BgpRouteWebRoutable());
-		floodlightProvider.addOFSwitchListener(this);
+    @Override
+    public void startUp(FloodlightModuleContext context) {
+        restApi.addRestletRoutable(new BgpRouteWebRoutable());
+        floodlightProvider.addOFSwitchListener(this);
 
-		//Retrieve the RIB from BGPd during startup
-		retrieveRib();
-	}
+        //Retrieve the RIB from BGPd during startup
+        retrieveRib();
+    }
 
-	@Override
-	public IPatriciaTrie<RibEntry> getPtree() {
-		return ptree;
-	}
+    @Override
+    public IPatriciaTrie<RibEntry> getPtree() {
+        return ptree;
+    }
 
-	@Override
-	public void clearPtree() {
-		ptree = new PatriciaTrie<RibEntry>(32);
-	}
+    @Override
+    public void clearPtree() {
+        ptree = new PatriciaTrie<RibEntry>(32);
+    }
 
-	@Override
-	public String getBGPdRestIp() {
-		return bgpdRestIp;
-	}
+    @Override
+    public String getBGPdRestIp() {
+        return bgpdRestIp;
+    }
 
-	@Override
-	public String getRouterId() {
-		return routerId;
-	}
+    @Override
+    public String getRouterId() {
+        return routerId;
+    }
 
-	private void retrieveRib(){
-		String url = "http://" + bgpdRestIp + "/wm/bgp/" + routerId;
-		String response = RestClient.get(url);
+    private void retrieveRib() {
+        String url = "http://" + bgpdRestIp + "/wm/bgp/" + routerId;
+        String response = RestClient.get(url);
 
-		if (response.equals("")){
-			return;
-		}
+        if (response.equals("")) {
+            return;
+        }
 
-		response = response.replaceAll("\"", "'");
-		JSONObject jsonObj = (JSONObject) JSONSerializer.toJSON(response);
-		JSONArray rib_json_array = jsonObj.getJSONArray("rib");
-		String router_id = jsonObj.getString("router-id");
+        response = response.replaceAll("\"", "'");
+        JSONObject jsonObj = (JSONObject) JSONSerializer.toJSON(response);
+        JSONArray rib_json_array = jsonObj.getJSONArray("rib");
+        String router_id = jsonObj.getString("router-id");
 
-		int size = rib_json_array.size();
+        int size = rib_json_array.size();
 
-		log.info("Retrived RIB of {} entries from BGPd", size);
+        log.info("Retrived RIB of {} entries from BGPd", size);
 
-		for (int j = 0; j < size; j++) {
-			JSONObject second_json_object = rib_json_array.getJSONObject(j);
-			String prefix = second_json_object.getString("prefix");
-			String nexthop = second_json_object.getString("nexthop");
+        for (int j = 0; j < size; j++) {
+            JSONObject second_json_object = rib_json_array.getJSONObject(j);
+            String prefix = second_json_object.getString("prefix");
+            String nexthop = second_json_object.getString("nexthop");
 
-			//insert each rib entry into the local rib;
-			String[] substring = prefix.split("/");
-			String prefix1 = substring[0];
-			String mask1 = substring[1];
+            //insert each rib entry into the local rib;
+            String[] substring = prefix.split("/");
+            String prefix1 = substring[0];
+            String mask1 = substring[1];
 
-			Prefix p;
-			try {
-				p = new Prefix(prefix1, Integer.valueOf(mask1));
-			} catch (NumberFormatException e) {
-				log.warn("Wrong mask format in RIB JSON: {}", mask1);
-				continue;
-			} catch (IllegalArgumentException e1) {
-				log.warn("Wrong prefix format in RIB JSON: {}", prefix1);
-				continue;
-			}
+            Prefix p;
+            try {
+                p = new Prefix(prefix1, Integer.valueOf(mask1));
+            } catch (NumberFormatException e) {
+                log.warn("Wrong mask format in RIB JSON: {}", mask1);
+                continue;
+            } catch (IllegalArgumentException e1) {
+                log.warn("Wrong prefix format in RIB JSON: {}", prefix1);
+                continue;
+            }
 
-			RibEntry rib = new RibEntry(router_id, nexthop);
+            RibEntry rib = new RibEntry(router_id, nexthop);
 
-			try {
-				ribUpdates.put(new RibUpdate(Operation.UPDATE, p, rib));
-			} catch (InterruptedException e) {
-				log.debug("Interrupted while pushing onto update queue");
-			}
-		}
-	}
+            try {
+                ribUpdates.put(new RibUpdate(Operation.UPDATE, p, rib));
+            } catch (InterruptedException e) {
+                log.debug("Interrupted while pushing onto update queue");
+            }
+        }
+    }
 
-	@Override
-	public void newRibUpdate(RibUpdate update) {
-		try {
-			ribUpdates.put(update);
-		} catch (InterruptedException e) {
-			log.debug("Interrupted while putting on ribUpdates queue", e);
-			Thread.currentThread().interrupt();
-		}
-	}
+    @Override
+    public void newRibUpdate(RibUpdate update) {
+        try {
+            ribUpdates.put(update);
+        } catch (InterruptedException e) {
+            log.debug("Interrupted while putting on ribUpdates queue", e);
+            Thread.currentThread().interrupt();
+        }
+    }
 
-	public synchronized void processRibAdd(RibUpdate update) {
-		Prefix prefix = update.getPrefix();
+    public synchronized void processRibAdd(RibUpdate update) {
+        Prefix prefix = update.getPrefix();
 
-		log.debug("Processing prefix add {}", prefix);
+        log.debug("Processing prefix add {}", prefix);
 
-		RibEntry rib = ptree.put(prefix, update.getRibEntry());
+        RibEntry rib = ptree.put(prefix, update.getRibEntry());
 
-		if (rib != null && !rib.equals(update.getRibEntry())) {
-			//There was an existing nexthop for this prefix. This update supersedes that,
-			//so we need to remove the old flows for this prefix from the switches
-			_processDeletePrefix(prefix, rib);
-		}
+        if (rib != null && !rib.equals(update.getRibEntry())) {
+            //There was an existing nexthop for this prefix. This update supersedes that,
+            //so we need to remove the old flows for this prefix from the switches
+            _processDeletePrefix(prefix, rib);
+        }
 
-		if (update.getRibEntry().getNextHop().equals(
-				InetAddresses.forString("0.0.0.0"))) {
-			//Route originated by SDN domain
-			//We don't handle these at the moment
-			log.debug("Own route {} to {}", prefix,
-					update.getRibEntry().getNextHop().getHostAddress());
-			return;
-		}
+        if (update.getRibEntry().getNextHop().equals(
+                InetAddresses.forString("0.0.0.0"))) {
+            //Route originated by SDN domain
+            //We don't handle these at the moment
+            log.debug("Own route {} to {}", prefix,
+                    update.getRibEntry().getNextHop().getHostAddress());
+            return;
+        }
 
-		_processRibAdd(update);
-	}
+        _processRibAdd(update);
+    }
 
-	private void _processRibAdd(RibUpdate update) {
-		Prefix prefix = update.getPrefix();
-		RibEntry rib = update.getRibEntry();
+    private void _processRibAdd(RibUpdate update) {
+        Prefix prefix = update.getPrefix();
+        RibEntry rib = update.getRibEntry();
 
-		InetAddress dstIpAddress = rib.getNextHop();
-		MACAddress nextHopMacAddress = null;
+        InetAddress dstIpAddress = rib.getNextHop();
+        MACAddress nextHopMacAddress = null;
 
-		// See if we know the MAC address of the next hop
-		// TODO if we do not treat the next hop as a device in the future, we need to update this
-		// TODO: Fix the code below after deviceStorage was removed
-		/*
-		IDeviceObject nextHopDevice =
-				deviceStorage.getDeviceByIP(InetAddresses.coerceToInteger(dstIpAddress));
+        // See if we know the MAC address of the next hop
+        // TODO if we do not treat the next hop as a device in the future, we need to update this
+        // TODO: Fix the code below after deviceStorage was removed
+        /*
+        IDeviceObject nextHopDevice =
+                deviceStorage.getDeviceByIP(InetAddresses.coerceToInteger(dstIpAddress));
 
-		if (nextHopDevice == null){
-			log.debug("NextHopDevice for IP: {} is null", dstIpAddress);
-			prefixesWaitingOnArp.put(dstIpAddress,
-					new RibUpdate(Operation.UPDATE, prefix, rib));
-			proxyArp.sendArpRequest(dstIpAddress, this, true);
-			return;
+        if (nextHopDevice == null){
+            log.debug("NextHopDevice for IP: {} is null", dstIpAddress);
+            prefixesWaitingOnArp.put(dstIpAddress,
+                    new RibUpdate(Operation.UPDATE, prefix, rib));
+            proxyArp.sendArpRequest(dstIpAddress, this, true);
+            return;
 
-		}
-		nextHopMacAddress = MACAddress.valueOf(nextHopDevice.getMACAddress());
-		*/
+        }
+        nextHopMacAddress = MACAddress.valueOf(nextHopDevice.getMACAddress());
+        */
 
-		// Find the attachment point (egress interface) of the next hop
-		Interface egressInterface = null;
-		if (bgpPeers.containsKey(dstIpAddress)) {
-			//Route to a peer
-			log.debug("Route to peer {}", dstIpAddress);
-			BgpPeer peer = bgpPeers.get(dstIpAddress);
-			egressInterface = interfaces.get(peer.getInterfaceName());
-		}
-		else {
-			//Route to non-peer
-			log.debug("Route to non-peer {}", dstIpAddress);
-			egressInterface = interfacePtrie.match(
-					new Prefix(dstIpAddress.getAddress(), 32));
-			if (egressInterface == null) {
-				log.warn("No outgoing interface found for {}", dstIpAddress.getHostAddress());
-				return;
-			}
-		}
+        // Find the attachment point (egress interface) of the next hop
+        Interface egressInterface = null;
+        if (bgpPeers.containsKey(dstIpAddress)) {
+            //Route to a peer
+            log.debug("Route to peer {}", dstIpAddress);
+            BgpPeer peer = bgpPeers.get(dstIpAddress);
+            egressInterface = interfaces.get(peer.getInterfaceName());
+        } else {
+            //Route to non-peer
+            log.debug("Route to non-peer {}", dstIpAddress);
+            egressInterface = interfacePtrie.match(
+                    new Prefix(dstIpAddress.getAddress(), 32));
+            if (egressInterface == null) {
+                log.warn("No outgoing interface found for {}", dstIpAddress.getHostAddress());
+                return;
+            }
+        }
 
-		if (nextHopMacAddress == null) {
-			prefixesWaitingOnArp.put(dstIpAddress,
-					new RibUpdate(Operation.UPDATE, prefix, rib));
-			proxyArp.sendArpRequest(dstIpAddress, this, true);
-			return;
-		}
-		else {
-			if (!bgpPeers.containsKey(dstIpAddress)) {
-				//If the prefix is for a non-peer we need to ensure there's a path,
-				//and push one if there isn't.
-				Path path = pushedPaths.get(dstIpAddress);
-				if (path == null) {
-					path = new Path(egressInterface, dstIpAddress);
-					calculateAndPushPath(path, nextHopMacAddress);
-					pushedPaths.put(dstIpAddress, path);
-				}
+        if (nextHopMacAddress == null) {
+            prefixesWaitingOnArp.put(dstIpAddress,
+                    new RibUpdate(Operation.UPDATE, prefix, rib));
+            proxyArp.sendArpRequest(dstIpAddress, this, true);
+            return;
+        } else {
+            if (!bgpPeers.containsKey(dstIpAddress)) {
+                //If the prefix is for a non-peer we need to ensure there's a path,
+                //and push one if there isn't.
+                Path path = pushedPaths.get(dstIpAddress);
+                if (path == null) {
+                    path = new Path(egressInterface, dstIpAddress);
+                    calculateAndPushPath(path, nextHopMacAddress);
+                    pushedPaths.put(dstIpAddress, path);
+                }
 
-				path.incrementUsers();
-				prefixToPath.put(prefix, path);
-			}
+                path.incrementUsers();
+                prefixToPath.put(prefix, path);
+            }
 
-			//For all prefixes we need to add the first-hop mac-rewriting flows
-			addPrefixFlows(prefix, egressInterface, nextHopMacAddress);
-		}
-	}
+            //For all prefixes we need to add the first-hop mac-rewriting flows
+            addPrefixFlows(prefix, egressInterface, nextHopMacAddress);
+        }
+    }
 
-	/**
-	 * Add a flow to match dst-IP prefix and rewrite MAC for one IP prefix
-	 * to all other border switches
-	 */
-	private void addPrefixFlows(Prefix prefix, Interface egressInterface,
-			MACAddress nextHopMacAddress) {
-		log.debug("Adding flows for prefix {}, next hop mac {}",
-				prefix, nextHopMacAddress);
+    /**
+     * Add a flow to match dst-IP prefix and rewrite MAC for one IP prefix
+     * to all other border switches
+     */
+    private void addPrefixFlows(Prefix prefix, Interface egressInterface,
+                                MACAddress nextHopMacAddress) {
+        log.debug("Adding flows for prefix {}, next hop mac {}",
+                prefix, nextHopMacAddress);
 
-		FlowPath flowPath = new FlowPath();
-		flowPath.setInstallerId(new CallerId("SDNIP"));
+        FlowPath flowPath = new FlowPath();
+        flowPath.setInstallerId(new CallerId("SDNIP"));
 
-		// Set flowPath FlowPathType and FlowPathUserState
-		flowPath.setFlowPathType(FlowPathType.FP_TYPE_SHORTEST_PATH);
-		flowPath.setFlowPathUserState(FlowPathUserState.FP_USER_ADD);
+        // Set flowPath FlowPathType and FlowPathUserState
+        flowPath.setFlowPathType(FlowPathType.FP_TYPE_SHORTEST_PATH);
+        flowPath.setFlowPathUserState(FlowPathUserState.FP_USER_ADD);
 
-		// Insert dst-ip prefix based forwarding and MAC rewrite flow entry
-		// only to the first-host switches
-		FlowPathFlags flowPathFlags = new FlowPathFlags();
-		flowPathFlags.setFlags(FlowPathFlags.KEEP_ONLY_FIRST_HOP_ENTRY);
-		flowPath.setFlowPathFlags(flowPathFlags);
+        // Insert dst-ip prefix based forwarding and MAC rewrite flow entry
+        // only to the first-host switches
+        FlowPathFlags flowPathFlags = new FlowPathFlags();
+        flowPathFlags.setFlags(FlowPathFlags.KEEP_ONLY_FIRST_HOP_ENTRY);
+        flowPath.setFlowPathFlags(flowPathFlags);
 
-		// Create the DataPath object: dstSwitchPort
-		SwitchPort dstPort = new SwitchPort();
-		dstPort.setDpid(new Dpid(egressInterface.getDpid()));
-		dstPort.setPort(new Port(egressInterface.getPort()));
+        // Create the DataPath object: dstSwitchPort
+        SwitchPort dstPort = new SwitchPort();
+        dstPort.setDpid(new Dpid(egressInterface.getDpid()));
+        dstPort.setPort(new Port(egressInterface.getPort()));
 
-		// We only need one flow mod per switch, so pick one interface on each switch
-		Map<Long, Interface> srcInterfaces = new HashMap<Long, Interface>();
-		for (Interface intf : interfaces.values()) {
-			if (!srcInterfaces.containsKey(intf.getDpid())
-					&& !intf.equals(egressInterface)) {
-				srcInterfaces.put(intf.getDpid(), intf);
-			}
-		}
-		for (Interface srcInterface : srcInterfaces.values()) {
+        // We only need one flow mod per switch, so pick one interface on each switch
+        Map<Long, Interface> srcInterfaces = new HashMap<Long, Interface>();
+        for (Interface intf : interfaces.values()) {
+            if (!srcInterfaces.containsKey(intf.getDpid())
+                    && !intf.equals(egressInterface)) {
+                srcInterfaces.put(intf.getDpid(), intf);
+            }
+        }
+        for (Interface srcInterface : srcInterfaces.values()) {
 
-			if (egressInterface.equals(srcInterface)){
-				continue;
-			}
+            if (egressInterface.equals(srcInterface)) {
+                continue;
+            }
 
-			// Create flowPath FlowId
-			flowPath.setFlowId(new FlowId());
+            // Create flowPath FlowId
+            flowPath.setFlowId(new FlowId());
 
-			// Create DataPath object: srcSwitchPort
-			SwitchPort srcPort = new SwitchPort();
-			srcPort.setDpid(new Dpid(srcInterface.getDpid()));
-			srcPort.setPort(new Port(srcInterface.getPort()));
+            // Create DataPath object: srcSwitchPort
+            SwitchPort srcPort = new SwitchPort();
+            srcPort.setDpid(new Dpid(srcInterface.getDpid()));
+            srcPort.setPort(new Port(srcInterface.getPort()));
 
-			DataPath dataPath = new DataPath();
-			dataPath.setSrcPort(srcPort);
-			dataPath.setDstPort(dstPort);
-			flowPath.setDataPath(dataPath);
+            DataPath dataPath = new DataPath();
+            dataPath.setSrcPort(srcPort);
+            dataPath.setDstPort(dstPort);
+            flowPath.setDataPath(dataPath);
 
-			// Create flow path matching condition(s): IPv4 Prefix
-			FlowEntryMatch flowEntryMatch = new FlowEntryMatch();
-			flowEntryMatch.enableEthernetFrameType(Ethernet.TYPE_IPv4);
-			IPv4Net dstIPv4Net= new IPv4Net(prefix.toString());
-			flowEntryMatch.enableDstIPv4Net(dstIPv4Net);
-			flowPath.setFlowEntryMatch(flowEntryMatch);
+            // Create flow path matching condition(s): IPv4 Prefix
+            FlowEntryMatch flowEntryMatch = new FlowEntryMatch();
+            flowEntryMatch.enableEthernetFrameType(Ethernet.TYPE_IPv4);
+            IPv4Net dstIPv4Net = new IPv4Net(prefix.toString());
+            flowEntryMatch.enableDstIPv4Net(dstIPv4Net);
+            flowPath.setFlowEntryMatch(flowEntryMatch);
 
-			/*
-			 * Create the Flow Entry Action(s): dst-MAC rewrite action
-			 */
-			FlowEntryActions flowEntryActions = new FlowEntryActions();
-			FlowEntryAction flowEntryAction1 = new FlowEntryAction();
-			flowEntryAction1.setActionSetEthernetDstAddr(nextHopMacAddress);
-			// flowEntryAction1.actionSetEthernetDstAddr(nextHopMacAddress);
-			flowEntryActions.addAction(flowEntryAction1);
-			flowPath.setFlowEntryActions(flowEntryActions);
+            /*
+             * Create the Flow Entry Action(s): dst-MAC rewrite action
+             */
+            FlowEntryActions flowEntryActions = new FlowEntryActions();
+            FlowEntryAction flowEntryAction1 = new FlowEntryAction();
+            flowEntryAction1.setActionSetEthernetDstAddr(nextHopMacAddress);
+            // flowEntryAction1.actionSetEthernetDstAddr(nextHopMacAddress);
+            flowEntryActions.addAction(flowEntryAction1);
+            flowPath.setFlowEntryActions(flowEntryActions);
 
-			// Flow Path installation, only to first hop switches
-			// TODO: Add the flow by using the new Path Intent framework
-			/*
-			if (flowManagerService.addFlow(flowPath) == null) {
-				log.error("Failed to install flow path to the first hop for " +
-						"prefix: {}, nextHopMacAddress: {}", prefix.getAddress(),
-						nextHopMacAddress);
-			}
-			else {
-				log.debug("Successfully installed flow path to the first hop " +
-						"for prefix: {}, nextHopMacAddress: {}", prefix.getAddress(),
-						nextHopMacAddress);
+            // Flow Path installation, only to first hop switches
+            // TODO: Add the flow by using the new Path Intent framework
+            /*
+            if (flowManagerService.addFlow(flowPath) == null) {
+                log.error("Failed to install flow path to the first hop for " +
+                        "prefix: {}, nextHopMacAddress: {}", prefix.getAddress(),
+                        nextHopMacAddress);
+            }
+            else {
+                log.debug("Successfully installed flow path to the first hop " +
+                        "for prefix: {}, nextHopMacAddress: {}", prefix.getAddress(),
+                        nextHopMacAddress);
 
-				pushedFlowIds.put(prefix, flowPath.flowId());
-			}
-			*/
-		}
-	}
+                pushedFlowIds.put(prefix, flowPath.flowId());
+            }
+            */
+        }
+    }
 
-	public synchronized void processRibDelete(RibUpdate update) {
-		Prefix prefix = update.getPrefix();
+    public synchronized void processRibDelete(RibUpdate update) {
+        Prefix prefix = update.getPrefix();
 
-		if (ptree.remove(prefix, update.getRibEntry())) {
-			/*
-			 * Only delete flows if an entry was actually removed from the trie.
-			 * If no entry was removed, the <prefix, nexthop> wasn't there so
-			 * it's probably already been removed and we don't need to do anything
-			 */
-			_processDeletePrefix(prefix, update.getRibEntry());
-		}
-	}
+        if (ptree.remove(prefix, update.getRibEntry())) {
+            /*
+             * Only delete flows if an entry was actually removed from the trie.
+             * If no entry was removed, the <prefix, nexthop> wasn't there so
+             * it's probably already been removed and we don't need to do anything
+             */
+            _processDeletePrefix(prefix, update.getRibEntry());
+        }
+    }
 
-	private void _processDeletePrefix(Prefix prefix, RibEntry ribEntry) {
-		deletePrefixFlows(prefix);
+    private void _processDeletePrefix(Prefix prefix, RibEntry ribEntry) {
+        deletePrefixFlows(prefix);
 
-		log.debug("Deleting {} to {}", prefix, ribEntry.getNextHop());
+        log.debug("Deleting {} to {}", prefix, ribEntry.getNextHop());
 
-		if (!bgpPeers.containsKey(ribEntry.getNextHop())) {
-			log.debug("Getting path for route with non-peer nexthop");
-			Path path = prefixToPath.remove(prefix);
+        if (!bgpPeers.containsKey(ribEntry.getNextHop())) {
+            log.debug("Getting path for route with non-peer nexthop");
+            Path path = prefixToPath.remove(prefix);
 
-			if (path != null) {
-				//path could be null if we added to the Ptree but didn't push
-				//flows yet because we were waiting to resolve ARP
+            if (path != null) {
+                //path could be null if we added to the Ptree but didn't push
+                //flows yet because we were waiting to resolve ARP
 
-				path.decrementUsers();
-				if (path.getUsers() <= 0 && !path.isPermanent()) {
-					deletePath(path);
-					pushedPaths.remove(path.getDstIpAddress());
-				}
-			}
-		}
-	}
+                path.decrementUsers();
+                if (path.getUsers() <= 0 && !path.isPermanent()) {
+                    deletePath(path);
+                    pushedPaths.remove(path.getDstIpAddress());
+                }
+            }
+        }
+    }
 
-	// TODO have not tested this module
-	private void deletePrefixFlows(Prefix prefix) {
-		log.debug("Deleting flows for prefix {}", prefix);
+    // TODO have not tested this module
+    private void deletePrefixFlows(Prefix prefix) {
+        log.debug("Deleting flows for prefix {}", prefix);
 
-		Collection<FlowId> flowIds = pushedFlowIds.removeAll(prefix);
-		for (FlowId flowId : flowIds) {
-		    // TODO: Delete the flow by using the new Path Intent framework
-		    /*
-			if (log.isTraceEnabled()) {
-				//Trace the flow status by flowPath in the switch before deleting it
-				log.trace("Pushing a DELETE flow mod to flowPath : {}",
-						flowManagerService.getFlow(flowId).toString());
-			}
+        Collection<FlowId> flowIds = pushedFlowIds.removeAll(prefix);
+        for (FlowId flowId : flowIds) {
+            // TODO: Delete the flow by using the new Path Intent framework
+            /*
+            if (log.isTraceEnabled()) {
+                //Trace the flow status by flowPath in the switch before deleting it
+                log.trace("Pushing a DELETE flow mod to flowPath : {}",
+                        flowManagerService.getFlow(flowId).toString());
+            }
 
-			if( flowManagerService.deleteFlow(flowId))
-			{
-				log.debug("Successfully deleted FlowId: {}",flowId);
-			}
-			else
-			{
-				log.debug("Failed to delete FlowId: {}",flowId);
-			}
-		    */
-		}
-	}
+            if( flowManagerService.deleteFlow(flowId))
+            {
+                log.debug("Successfully deleted FlowId: {}",flowId);
+            }
+            else
+            {
+                log.debug("Failed to delete FlowId: {}",flowId);
+            }
+            */
+        }
+    }
 
-	// TODO need to record the path and then delete here
-	private void deletePath(Path path) {
-		log.debug("Deleting flows for path to {}",
-				path.getDstIpAddress().getHostAddress());
+    // TODO need to record the path and then delete here
+    private void deletePath(Path path) {
+        log.debug("Deleting flows for path to {}",
+                path.getDstIpAddress().getHostAddress());
 
-		// TODO need update
-		/*for (PushedFlowMod pfm : path.getFlowMods()) {
-			if (log.isTraceEnabled()) {
-				log.trace("Pushing a DELETE flow mod to {}, dst MAC {}",
-						new Object[] {HexString.toHexString(pfm.getDpid()),
-						HexString.toHexString(pfm.getFlowMod().getMatch().getDataLayerDestination())
-				});
-			}
+        // TODO need update
+        /*for (PushedFlowMod pfm : path.getFlowMods()) {
+            if (log.isTraceEnabled()) {
+                log.trace("Pushing a DELETE flow mod to {}, dst MAC {}",
+                        new Object[] {HexString.toHexString(pfm.getDpid()),
+                        HexString.toHexString(pfm.getFlowMod().getMatch().getDataLayerDestination())
+                });
+            }
 
-			sendDeleteFlowMod(pfm.getFlowMod(), pfm.getDpid());
-		}*/
-	}
+            sendDeleteFlowMod(pfm.getFlowMod(), pfm.getDpid());
+        }*/
+    }
 
 
-	//TODO test next-hop changes
-	//TODO check delete/add synchronization
+    //TODO test next-hop changes
+    //TODO check delete/add synchronization
 
-	/**
-	 * On startup, we need to calculate a full mesh of paths between all gateway
-	 * switches
-	 */
-	private void setupFullMesh(){
-		//For each border router, calculate and install a path from every other
-		//border switch to said border router. However, don't install the entry
-		//in to the first hop switch, as we need to install an entry to rewrite
-		//for each prefix received. This will be done later when prefixes have
-		//actually been received.
+    /**
+     * On startup, we need to calculate a full mesh of paths between all gateway
+     * switches
+     */
+    private void setupFullMesh() {
+        //For each border router, calculate and install a path from every other
+        //border switch to said border router. However, don't install the entry
+        //in to the first hop switch, as we need to install an entry to rewrite
+        //for each prefix received. This will be done later when prefixes have
+        //actually been received.
 
-		for (BgpPeer peer : bgpPeers.values()) {
-			Interface peerInterface = interfaces.get(peer.getInterfaceName());
+        for (BgpPeer peer : bgpPeers.values()) {
+            Interface peerInterface = interfaces.get(peer.getInterfaceName());
 
-			//We know there's not already a Path here pushed, because this is
-			//called before all other routing
-			Path path = new Path(peerInterface, peer.getIpAddress());
-			path.setPermanent();
+            //We know there's not already a Path here pushed, because this is
+            //called before all other routing
+            Path path = new Path(peerInterface, peer.getIpAddress());
+            path.setPermanent();
 
-			//See if we know the MAC address of the peer. If not we can't
-			//do anything until we learn it
-			// TODO: Fix the code below after deviceStorage was removed
-			MACAddress macAddress = null;
-			/*
-			IDeviceObject nextHopDevice =
-					deviceStorage.getDeviceByIP(InetAddresses.coerceToInteger(peer.getIpAddress()));
+            //See if we know the MAC address of the peer. If not we can't
+            //do anything until we learn it
+            // TODO: Fix the code below after deviceStorage was removed
+            MACAddress macAddress = null;
+            /*
+            IDeviceObject nextHopDevice =
+                    deviceStorage.getDeviceByIP(InetAddresses.coerceToInteger(peer.getIpAddress()));
 
-			if(nextHopDevice == null){
-				log.debug("There is no DeviceObject for {}", peer.getIpAddress().getHostAddress());
-				//Put in the pending paths list first
-				pathsWaitingOnArp.put(peer.getIpAddress(), path);
-				proxyArp.sendArpRequest(peer.getIpAddress(), this, true);
-				continue;
-			}
+            if(nextHopDevice == null){
+                log.debug("There is no DeviceObject for {}", peer.getIpAddress().getHostAddress());
+                //Put in the pending paths list first
+                pathsWaitingOnArp.put(peer.getIpAddress(), path);
+                proxyArp.sendArpRequest(peer.getIpAddress(), this, true);
+                continue;
+            }
 
-			macAddress = MACAddress.valueOf(nextHopDevice.getMACAddress());
-			*/
+            macAddress = MACAddress.valueOf(nextHopDevice.getMACAddress());
+            */
 
-			if (macAddress == null) {
-				log.debug("Don't know MAC for {}", peer.getIpAddress().getHostAddress());
-				//Put in the pending paths list first
-				pathsWaitingOnArp.put(peer.getIpAddress(), path);
-				proxyArp.sendArpRequest(peer.getIpAddress(), this, true);
-				continue;
-			}
+            if (macAddress == null) {
+                log.debug("Don't know MAC for {}", peer.getIpAddress().getHostAddress());
+                //Put in the pending paths list first
+                pathsWaitingOnArp.put(peer.getIpAddress(), path);
+                proxyArp.sendArpRequest(peer.getIpAddress(), this, true);
+                continue;
+            }
 
-			//If we know the MAC, lets go ahead and push the paths to this peer
-			calculateAndPushPath(path, macAddress);
-		}
-	}
+            //If we know the MAC, lets go ahead and push the paths to this peer
+            calculateAndPushPath(path, macAddress);
+        }
+    }
 
-	private void calculateAndPushPath(Path path, MACAddress dstMacAddress) {
-		Interface dstInterface = path.getDstInterface();
+    private void calculateAndPushPath(Path path, MACAddress dstMacAddress) {
+        Interface dstInterface = path.getDstInterface();
 
-		log.debug("Setting up path to {}, {}", path.getDstIpAddress().getHostAddress(),
-				dstMacAddress);
+        log.debug("Setting up path to {}, {}", path.getDstIpAddress().getHostAddress(),
+                dstMacAddress);
 
-		FlowPath flowPath = new FlowPath();
+        FlowPath flowPath = new FlowPath();
 
-		flowPath.setInstallerId(new CallerId("SDNIP"));
+        flowPath.setInstallerId(new CallerId("SDNIP"));
 
-		// Set flowPath FlowPathType and FlowPathUserState
-		flowPath.setFlowPathType(FlowPathType.FP_TYPE_SHORTEST_PATH);
-		flowPath.setFlowPathUserState(FlowPathUserState.FP_USER_ADD);
+        // Set flowPath FlowPathType and FlowPathUserState
+        flowPath.setFlowPathType(FlowPathType.FP_TYPE_SHORTEST_PATH);
+        flowPath.setFlowPathUserState(FlowPathUserState.FP_USER_ADD);
 
-		// Insert the dest-mac based forwarding flow entry to the non-first-hop switches
-		FlowPathFlags flowPathFlags = new FlowPathFlags();
-		flowPathFlags.setFlags(FlowPathFlags.DISCARD_FIRST_HOP_ENTRY);
-		flowPath.setFlowPathFlags(flowPathFlags);
+        // Insert the dest-mac based forwarding flow entry to the non-first-hop switches
+        FlowPathFlags flowPathFlags = new FlowPathFlags();
+        flowPathFlags.setFlags(FlowPathFlags.DISCARD_FIRST_HOP_ENTRY);
+        flowPath.setFlowPathFlags(flowPathFlags);
+
+        // Create the DataPath object: dstSwitchPort
+        SwitchPort dstPort = new SwitchPort();
+        dstPort.setDpid(new Dpid(dstInterface.getDpid()));
+        dstPort.setPort(new Port(dstInterface.getPort()));
 
-		// Create the DataPath object: dstSwitchPort
-		SwitchPort dstPort = new SwitchPort();
-		dstPort.setDpid(new Dpid(dstInterface.getDpid()));
-		dstPort.setPort(new Port(dstInterface.getPort()));
+        for (Interface srcInterface : interfaces.values()) {
 
-		for (Interface srcInterface : interfaces.values()) {
+            if (dstInterface.equals(srcInterface)) {
+                continue;
+            }
 
-			if (dstInterface.equals(srcInterface)){
-				continue;
-			}
+            // Create flowPath FlowId
+            flowPath.setFlowId(new FlowId());
 
-			// Create flowPath FlowId
-			flowPath.setFlowId(new FlowId());
+            // Create the DataPath object: srcSwitchPort
+            SwitchPort srcPort = new SwitchPort();
+            srcPort.setDpid(new Dpid(srcInterface.getDpid()));
+            srcPort.setPort(new Port(srcInterface.getPort()));
 
-			// Create the DataPath object: srcSwitchPort
-			SwitchPort srcPort = new SwitchPort();
-			srcPort.setDpid(new Dpid(srcInterface.getDpid()));
-			srcPort.setPort(new Port(srcInterface.getPort()));
+            DataPath dataPath = new DataPath();
+            dataPath.setSrcPort(srcPort);
+            dataPath.setDstPort(dstPort);
+            flowPath.setDataPath(dataPath);
 
-			DataPath dataPath = new DataPath();
-			dataPath.setSrcPort(srcPort);
-			dataPath.setDstPort(dstPort);
-			flowPath.setDataPath(dataPath);
+            // Create the Flow Path Match condition(s)
+            FlowEntryMatch flowEntryMatch = new FlowEntryMatch();
+            flowEntryMatch.enableEthernetFrameType(Ethernet.TYPE_IPv4);
+            flowEntryMatch.enableDstMac(dstMacAddress);
+            flowPath.setFlowEntryMatch(flowEntryMatch);
 
-			// Create the Flow Path Match condition(s)
-			FlowEntryMatch flowEntryMatch = new FlowEntryMatch();
-			flowEntryMatch.enableEthernetFrameType(Ethernet.TYPE_IPv4);
-			flowEntryMatch.enableDstMac(dstMacAddress);
-			flowPath.setFlowEntryMatch(flowEntryMatch);
+            // NOTE: No need to add ACTION_OUTPUT. It is implied when creating
+            // Shortest Path Flow, and is always the last action for the Flow Entries
+            log.debug("FlowPath of MAC based forwarding: {}", flowPath.toString());
+            // TODO: Add the flow by using the new Path Intent framework
+            /*
+            if (flowManagerService.addFlow(flowPath) == null) {
+                log.error("Failed to set up MAC based forwarding path to {}, {}",
+                        path.getDstIpAddress().getHostAddress(),dstMacAddress);
+            }
+            else {
+                log.debug("Successfully set up MAC based forwarding path to {}, {}",
+                        path.getDstIpAddress().getHostAddress(),dstMacAddress);
+            }
+            */
+        }
+    }
 
-			// NOTE: No need to add ACTION_OUTPUT. It is implied when creating
-			// Shortest Path Flow, and is always the last action for the Flow Entries
-			log.debug("FlowPath of MAC based forwarding: {}", flowPath.toString());
-			// TODO: Add the flow by using the new Path Intent framework
-			/*
-			if (flowManagerService.addFlow(flowPath) == null) {
-				log.error("Failed to set up MAC based forwarding path to {}, {}",
-						path.getDstIpAddress().getHostAddress(),dstMacAddress);
-			}
-			else {
-				log.debug("Successfully set up MAC based forwarding path to {}, {}",
-						path.getDstIpAddress().getHostAddress(),dstMacAddress);
-			}
-			*/
-		}
-	}
+    /**
+     * Pre-actively install all BGP traffic paths from BGP host attachment point
+     * in SDN network to all the virtual gateways to BGP peers in other networks
+     */
+    private void setupBgpPaths() {
 
-	/**
-	 *  Pre-actively install all BGP traffic paths from BGP host attachment point
-	 *  in SDN network to all the virtual gateways to BGP peers in other networks
-	 */
-	private void setupBgpPaths(){
+        for (BgpPeer bgpPeer : bgpPeers.values()) {
 
-		for (BgpPeer bgpPeer : bgpPeers.values()){
+            FlowPath flowPath = new FlowPath();
+            flowPath.setInstallerId(new CallerId("SDNIP"));
 
-			FlowPath flowPath = new FlowPath();
-			flowPath.setInstallerId(new CallerId("SDNIP"));
+            // Set flowPath FlowPathType and FlowPathUserState
+            flowPath.setFlowPathType(FlowPathType.FP_TYPE_SHORTEST_PATH);
+            flowPath.setFlowPathUserState(FlowPathUserState.FP_USER_ADD);
 
-			// Set flowPath FlowPathType and FlowPathUserState
-			flowPath.setFlowPathType(FlowPathType.FP_TYPE_SHORTEST_PATH);
-			flowPath.setFlowPathUserState(FlowPathUserState.FP_USER_ADD);
+            // Install flow paths between BGPd and its peers
+            // There is no need to set the FlowPathFlags
+            flowPath.setFlowPathFlags(new FlowPathFlags(0));
 
-			// Install flow paths between BGPd and its peers
-			// There is no need to set the FlowPathFlags
-			flowPath.setFlowPathFlags(new FlowPathFlags(0));
+            Interface peerInterface = interfaces.get(bgpPeer.getInterfaceName());
 
-			Interface peerInterface = interfaces.get(bgpPeer.getInterfaceName());
+            // Create the Flow Path Match condition(s)
+            FlowEntryMatch flowEntryMatch = new FlowEntryMatch();
+            flowEntryMatch.enableEthernetFrameType(Ethernet.TYPE_IPv4);
 
-			// Create the Flow Path Match condition(s)
-			FlowEntryMatch flowEntryMatch = new FlowEntryMatch();
-			flowEntryMatch.enableEthernetFrameType(Ethernet.TYPE_IPv4);
+            // Match both source address and dest address
+            IPv4Net dstIPv4Net = new IPv4Net(bgpPeer.getIpAddress().getHostAddress() + "/32");
+            flowEntryMatch.enableDstIPv4Net(dstIPv4Net);
 
-			// Match both source address and dest address
-			IPv4Net dstIPv4Net= new IPv4Net(bgpPeer.getIpAddress().getHostAddress()+"/32");
-			flowEntryMatch.enableDstIPv4Net(dstIPv4Net);
+            IPv4Net srcIPv4Net = new IPv4Net(peerInterface.getIpAddress().getHostAddress() + "/32");
+            flowEntryMatch.enableSrcIPv4Net(srcIPv4Net);
 
-			IPv4Net srcIPv4Net= new IPv4Net(peerInterface.getIpAddress().getHostAddress()+"/32");
-			flowEntryMatch.enableSrcIPv4Net(srcIPv4Net);
+            // Match TCP protocol
+            flowEntryMatch.enableIpProto(IPv4.PROTOCOL_TCP);
 
-			// Match TCP protocol
-			flowEntryMatch.enableIpProto(IPv4.PROTOCOL_TCP);
+            // Match destination TCP port
+            flowEntryMatch.enableDstTcpUdpPort(BGP_PORT);
+            flowPath.setFlowEntryMatch(flowEntryMatch);
 
-			// Match destination TCP port
-			flowEntryMatch.enableDstTcpUdpPort(BGP_PORT);
-			flowPath.setFlowEntryMatch(flowEntryMatch);
+            /**
+             * Create the DataPath: BGP -> BGP peer
+             */
+            // Flow path for src-TCP-port
+            DataPath dataPath = new DataPath();
 
-			/**
-			 * Create the DataPath: BGP -> BGP peer
-			 */
-			// Flow path for src-TCP-port
-			DataPath dataPath = new DataPath();
+            SwitchPort srcPort = new SwitchPort();
+            srcPort.setDpid(bgpdAttachmentPoint.dpid());
+            srcPort.setPort(bgpdAttachmentPoint.port());
+            dataPath.setSrcPort(srcPort);
 
-			SwitchPort srcPort = new SwitchPort();
-			srcPort.setDpid(bgpdAttachmentPoint.dpid());
-			srcPort.setPort(bgpdAttachmentPoint.port());
-			dataPath.setSrcPort(srcPort);
+            SwitchPort dstPort = new SwitchPort();
+            dstPort.setDpid(new Dpid(peerInterface.getDpid()));
+            dstPort.setPort(new Port(peerInterface.getSwitchPort().port()));
+            dataPath.setDstPort(dstPort);
 
-			SwitchPort dstPort = new SwitchPort();
-			dstPort.setDpid(new Dpid(peerInterface.getDpid()));
-			dstPort.setPort(new Port(peerInterface.getSwitchPort().port()));
-			dataPath.setDstPort(dstPort);
+            flowPath.setDataPath(dataPath);
 
-			flowPath.setDataPath(dataPath);
+            // TODO: Add the flow by using the new Path Intent framework
+            /*
+            if (flowManagerService.addFlow(flowPath) == null) {
+                log.error("Failed to set up path BGP -> peer {}"+"; dst-TCP-port:179",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            else {
+                log.debug("Successfully set up path BGP -> peer {}"+"; dst-TCP-port:179",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            */
 
-			// TODO: Add the flow by using the new Path Intent framework
-			/*
-			if (flowManagerService.addFlow(flowPath) == null) {
-				log.error("Failed to set up path BGP -> peer {}"+"; dst-TCP-port:179",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			else {
-				log.debug("Successfully set up path BGP -> peer {}"+"; dst-TCP-port:179",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			*/
+            // Disable dst-TCP-port, and set src-TCP-port
+            flowEntryMatch.disableDstTcpUdpPort();
+            flowEntryMatch.enableSrcTcpUdpPort(BGP_PORT);
+            flowPath.setFlowEntryMatch(flowEntryMatch);
 
-			// Disable dst-TCP-port, and set src-TCP-port
-			flowEntryMatch.disableDstTcpUdpPort();
-			flowEntryMatch.enableSrcTcpUdpPort(BGP_PORT);
-			flowPath.setFlowEntryMatch(flowEntryMatch);
+            // Create a new FlowId
+            flowPath.setFlowId(new FlowId());
 
-			// Create a new FlowId
-			flowPath.setFlowId(new FlowId());
+            // TODO: Add the flow by using the new Path Intent framework
+            /*
+            if (flowManagerService.addFlow(flowPath) == null) {
+                log.error("Failed to set up path BGP -> Peer {}" + "; src-TCP-port:179",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            else {
+                log.debug("Successfully set up path BGP -> Peer {}" + "; src-TCP-port:179",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            */
 
-			// TODO: Add the flow by using the new Path Intent framework
-			/*
-			if (flowManagerService.addFlow(flowPath) == null) {
-				log.error("Failed to set up path BGP -> Peer {}" + "; src-TCP-port:179",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			else {
-				log.debug("Successfully set up path BGP -> Peer {}" + "; src-TCP-port:179",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			*/
+            /**
+             * Create the DataPath: BGP <-BGP peer
+             */
+            // Reversed BGP flow path for src-TCP-port
+            flowPath.setFlowId(new FlowId());
 
-			/**
-			 * Create the DataPath: BGP <-BGP peer
-			 */
-			// Reversed BGP flow path for src-TCP-port
-			flowPath.setFlowId(new FlowId());
+            DataPath reverse_dataPath = new DataPath();
 
-			DataPath reverse_dataPath = new DataPath();
+            SwitchPort reverse_dstPort = new SwitchPort();
+            reverse_dstPort.setDpid(bgpdAttachmentPoint.dpid());
+            reverse_dstPort.setPort(bgpdAttachmentPoint.port());
+            reverse_dataPath.setDstPort(reverse_dstPort);
 
-			SwitchPort reverse_dstPort = new SwitchPort();
-			reverse_dstPort.setDpid(bgpdAttachmentPoint.dpid());
-			reverse_dstPort.setPort(bgpdAttachmentPoint.port());
-			reverse_dataPath.setDstPort(reverse_dstPort);
+            SwitchPort reverse_srcPort = new SwitchPort();
+            reverse_srcPort.setDpid(new Dpid(peerInterface.getDpid()));
+            reverse_srcPort.setPort(new Port(peerInterface.getSwitchPort().port()));
+            reverse_dataPath.setSrcPort(reverse_srcPort);
+            flowPath.setDataPath(reverse_dataPath);
 
-			SwitchPort reverse_srcPort = new SwitchPort();
-			reverse_srcPort.setDpid(new Dpid(peerInterface.getDpid()));
-			reverse_srcPort.setPort(new Port(peerInterface.getSwitchPort().port()));
-			reverse_dataPath.setSrcPort(reverse_srcPort);
-			flowPath.setDataPath(reverse_dataPath);
+            // reverse the dst IP and src IP addresses
+            flowEntryMatch.enableDstIPv4Net(srcIPv4Net);
+            flowEntryMatch.enableSrcIPv4Net(dstIPv4Net);
+            flowPath.setFlowEntryMatch(flowEntryMatch);
 
-			// reverse the dst IP and src IP addresses
-			flowEntryMatch.enableDstIPv4Net(srcIPv4Net);
-			flowEntryMatch.enableSrcIPv4Net(dstIPv4Net);
-			flowPath.setFlowEntryMatch(flowEntryMatch);
+            log.debug("Reversed BGP FlowPath: {}", flowPath.toString());
 
-			log.debug("Reversed BGP FlowPath: {}", flowPath.toString());
+            // TODO: Add the flow by using the new Path Intent framework
+            /*
+            if (flowManagerService.addFlow(flowPath) == null) {
 
-			// TODO: Add the flow by using the new Path Intent framework
-			/*
-			if (flowManagerService.addFlow(flowPath) == null) {
+                log.error("Failed to set up path BGP <- Peer {}" + "; src-TCP-port:179",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            else {
+                log.debug("Successfully set up path BGP <- Peer {}" + "; src-TCP-port:179",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            */
 
-				log.error("Failed to set up path BGP <- Peer {}" + "; src-TCP-port:179",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			else {
-				log.debug("Successfully set up path BGP <- Peer {}" + "; src-TCP-port:179",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			*/
+            // Reversed BGP flow path for dst-TCP-port
+            flowPath.setFlowId(new FlowId());
 
-			// Reversed BGP flow path for dst-TCP-port
-			flowPath.setFlowId(new FlowId());
+            // Disable src-TCP-port, and set the dst-TCP-port
+            flowEntryMatch.disableSrcTcpUdpPort();
+            flowEntryMatch.enableDstTcpUdpPort(BGP_PORT);
+            flowPath.setFlowEntryMatch(flowEntryMatch);
 
-			// Disable src-TCP-port, and set the dst-TCP-port
-			flowEntryMatch.disableSrcTcpUdpPort();
-			flowEntryMatch.enableDstTcpUdpPort(BGP_PORT);
-			flowPath.setFlowEntryMatch(flowEntryMatch);
+            log.debug("Reversed BGP FlowPath: {}", flowPath.toString());
 
-			log.debug("Reversed BGP FlowPath: {}", flowPath.toString());
+            // TODO: Add the flow by using the new Path Intent framework
+            /*
+            if (flowManagerService.addFlow(flowPath) == null) {
+                log.error("Failed to setting up path BGP <- Peer {}" + "; dst-TCP-port:179",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            else {
+                log.debug("Successfully setting up path BGP <- Peer {}" + "; dst-TCP-port:179",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            */
 
-			// TODO: Add the flow by using the new Path Intent framework
-			/*
-			if (flowManagerService.addFlow(flowPath) == null) {
-				log.error("Failed to setting up path BGP <- Peer {}" + "; dst-TCP-port:179",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			else {
-				log.debug("Successfully setting up path BGP <- Peer {}" + "; dst-TCP-port:179",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			*/
+            /**
+             * ICMP paths between BGPd and its peers
+             */
+            //match ICMP protocol BGP <- Peer
+            flowPath.setFlowId(new FlowId());
 
-			/**
-			 * ICMP paths between BGPd and its peers
-			 */
-			//match ICMP protocol BGP <- Peer
-			flowPath.setFlowId(new FlowId());
+            flowEntryMatch.enableIpProto(IPv4.PROTOCOL_ICMP);
+            flowEntryMatch.disableSrcTcpUdpPort();
+            flowEntryMatch.disableDstTcpUdpPort();
 
-			flowEntryMatch.enableIpProto(IPv4.PROTOCOL_ICMP);
-			flowEntryMatch.disableSrcTcpUdpPort();
-			flowEntryMatch.disableDstTcpUdpPort();
+            flowPath.setFlowEntryMatch(flowEntryMatch);
 
-			flowPath.setFlowEntryMatch(flowEntryMatch);
+            flowPath.setDataPath(reverse_dataPath);
 
-			flowPath.setDataPath(reverse_dataPath);
+            log.debug("Reversed ICMP FlowPath: {}", flowPath.toString());
 
-			log.debug("Reversed ICMP FlowPath: {}", flowPath.toString());
+            // TODO: Add the flow by using the new Path Intent framework
+            /*
+            if (flowManagerService.addFlow(flowPath) == null) {
 
-			// TODO: Add the flow by using the new Path Intent framework
-			/*
-			if (flowManagerService.addFlow(flowPath) == null) {
+                log.error("Failed to set up ICMP path BGP <- Peer {}",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            else {
+                log.debug("Successfully set up ICMP path BGP <- Peer {}",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            */
 
-				log.error("Failed to set up ICMP path BGP <- Peer {}",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			else {
-				log.debug("Successfully set up ICMP path BGP <- Peer {}",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			*/
+            //match ICMP protocol BGP -> Peer
+            flowPath.setFlowId(new FlowId());
 
-			//match ICMP protocol BGP -> Peer
-			flowPath.setFlowId(new FlowId());
+            flowEntryMatch.enableDstIPv4Net(dstIPv4Net);
+            flowEntryMatch.enableSrcIPv4Net(srcIPv4Net);
+            flowPath.setFlowEntryMatch(flowEntryMatch);
 
-			flowEntryMatch.enableDstIPv4Net(dstIPv4Net);
-			flowEntryMatch.enableSrcIPv4Net(srcIPv4Net);
-			flowPath.setFlowEntryMatch(flowEntryMatch);
+            flowPath.setDataPath(dataPath);
 
-			flowPath.setDataPath(dataPath);
+            log.debug("ICMP flowPath: {}", flowPath.toString());
 
-			log.debug("ICMP flowPath: {}", flowPath.toString());
+            // TODO: Add the flow by using the new Path Intent framework
+            /*
+            if (flowManagerService.addFlow(flowPath) == null) {
 
-			// TODO: Add the flow by using the new Path Intent framework
-			/*
-			if (flowManagerService.addFlow(flowPath) == null) {
+                log.error("Failed to set up ICMP path BGP -> Peer {}",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            else {
+                log.debug("Successfully set up ICMP path BGP -> Peer {}",
+                        bgpPeer.getIpAddress().getHostAddress());
+            }
+            */
+        }
+    }
 
-				log.error("Failed to set up ICMP path BGP -> Peer {}",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			else {
-				log.debug("Successfully set up ICMP path BGP -> Peer {}",
-						bgpPeer.getIpAddress().getHostAddress());
-			}
-			*/
-		}
-	}
+    @Override
+    public void arpResponse(InetAddress ipAddress, MACAddress macAddress) {
+        log.debug("Received ARP response: {} => {}",
+                ipAddress.getHostAddress(), macAddress);
 
-	@Override
-	public void arpResponse(InetAddress ipAddress, MACAddress macAddress) {
-		log.debug("Received ARP response: {} => {}",
-				ipAddress.getHostAddress(), macAddress);
+        /*
+         * We synchronize on this to prevent changes to the ptree while we're pushing
+         * flows to the switches. If the ptree changes, the ptree and switches
+         * could get out of sync.
+         */
+        synchronized (this) {
+            Path path = pathsWaitingOnArp.remove(ipAddress);
 
-		/*
-		 * We synchronize on this to prevent changes to the ptree while we're pushing
-		 * flows to the switches. If the ptree changes, the ptree and switches
-		 * could get out of sync.
-		 */
-		synchronized (this) {
-			Path path = pathsWaitingOnArp.remove(ipAddress);
+            if (path != null) {
+                log.debug("Pushing path to {} at {} on {}", new Object[]{
+                        path.getDstIpAddress().getHostAddress(), macAddress,
+                        path.getDstInterface().getSwitchPort()});
+                //These paths should always be to BGP peers. Paths to non-peers are
+                //handled once the first prefix is ready to push
+                if (pushedPaths.containsKey(path.getDstIpAddress())) {
+                    //A path already got pushed to this endpoint while we were waiting
+                    //for ARP. We'll copy over the permanent attribute if it is set on this path.
+                    if (path.isPermanent()) {
+                        pushedPaths.get(path.getDstIpAddress()).setPermanent();
+                    }
+                } else {
+                    calculateAndPushPath(path, macAddress);
+                    pushedPaths.put(path.getDstIpAddress(), path);
+                }
+            }
 
-			if (path != null) {
-				log.debug("Pushing path to {} at {} on {}", new Object[] {
-						path.getDstIpAddress().getHostAddress(), macAddress,
-						path.getDstInterface().getSwitchPort()});
-				//These paths should always be to BGP peers. Paths to non-peers are
-				//handled once the first prefix is ready to push
-				if (pushedPaths.containsKey(path.getDstIpAddress())) {
-					//A path already got pushed to this endpoint while we were waiting
-					//for ARP. We'll copy over the permanent attribute if it is set on this path.
-					if (path.isPermanent()) {
-						pushedPaths.get(path.getDstIpAddress()).setPermanent();
-					}
-				}
-				else {
-					calculateAndPushPath(path, macAddress);
-					pushedPaths.put(path.getDstIpAddress(), path);
-				}
-			}
+            Set<RibUpdate> prefixesToPush = prefixesWaitingOnArp.removeAll(ipAddress);
 
-			Set<RibUpdate> prefixesToPush = prefixesWaitingOnArp.removeAll(ipAddress);
+            for (RibUpdate update : prefixesToPush) {
+                //These will always be adds
 
-			for (RibUpdate update : prefixesToPush) {
-				//These will always be adds
+                RibEntry rib = ptree.lookup(update.getPrefix());
+                if (rib != null && rib.equals(update.getRibEntry())) {
+                    log.debug("Pushing prefix {} next hop {}", update.getPrefix(),
+                            rib.getNextHop().getHostAddress());
+                    //We only push prefix flows if the prefix is still in the ptree
+                    //and the next hop is the same as our update. The prefix could
+                    //have been removed while we were waiting for the ARP, or the
+                    //next hop could have changed.
+                    _processRibAdd(update);
+                } else {
+                    log.debug("Received ARP response, but {},{} is no longer in ptree",
+                            update.getPrefix(), update.getRibEntry());
+                }
+            }
+        }
+    }
 
-				RibEntry rib = ptree.lookup(update.getPrefix());
-				if (rib != null && rib.equals(update.getRibEntry())) {
-					log.debug("Pushing prefix {} next hop {}", update.getPrefix(),
-							rib.getNextHop().getHostAddress());
-					//We only push prefix flows if the prefix is still in the ptree
-					//and the next hop is the same as our update. The prefix could
-					//have been removed while we were waiting for the ARP, or the
-					//next hop could have changed.
-					_processRibAdd(update);
-				} else {
-					log.debug("Received ARP response, but {},{} is no longer in ptree",
-							update.getPrefix(), update.getRibEntry());
-				}
-			}
-		}
-	}
+    //TODO wait the priority module of the flow Manager
+    private void setupArpFlows() {
+        OFMatch match = new OFMatch();
+        match.setDataLayerType(Ethernet.TYPE_ARP);
+        match.setWildcards(match.getWildcards() & ~OFMatch.OFPFW_DL_TYPE);
 
-	//TODO wait the priority module of the flow Manager
-	private void setupArpFlows() {
-		OFMatch match = new OFMatch();
-		match.setDataLayerType(Ethernet.TYPE_ARP);
-		match.setWildcards(match.getWildcards() & ~OFMatch.OFPFW_DL_TYPE);
+        OFFlowMod fm = new OFFlowMod();
+        fm.setMatch(match);
 
-		OFFlowMod fm = new OFFlowMod();
-		fm.setMatch(match);
+        OFActionOutput action = new OFActionOutput();
+        action.setPort(OFPort.OFPP_CONTROLLER.getValue());
+        action.setMaxLength((short) 0xffff);
+        List<OFAction> actions = new ArrayList<OFAction>(1);
+        actions.add(action);
+        fm.setActions(actions);
 
-		OFActionOutput action = new OFActionOutput();
-		action.setPort(OFPort.OFPP_CONTROLLER.getValue());
-		action.setMaxLength((short)0xffff);
-		List<OFAction> actions = new ArrayList<OFAction>(1);
-		actions.add(action);
-		fm.setActions(actions);
+        fm.setIdleTimeout((short) 0)
+                .setHardTimeout((short) 0)
+                .setBufferId(OFPacketOut.BUFFER_ID_NONE)
+                .setCookie(0)
+                .setCommand(OFFlowMod.OFPFC_ADD)
+                .setPriority(ARP_PRIORITY)
+                .setLengthU(OFFlowMod.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH);
 
-		fm.setIdleTimeout((short)0)
-		.setHardTimeout((short)0)
-		.setBufferId(OFPacketOut.BUFFER_ID_NONE)
-		.setCookie(0)
-		.setCommand(OFFlowMod.OFPFC_ADD)
-		.setPriority(ARP_PRIORITY)
-		.setLengthU(OFFlowMod.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH);
+        for (String strdpid : switches) {
+            flowCache.write(HexString.toLong(strdpid), fm);
+        }
+    }
 
-		for (String strdpid : switches){
-			flowCache.write(HexString.toLong(strdpid), fm);
-		}
-	}
-	//TODO need update, waiting for the priority feature from flow Manager
-	private void setupDefaultDropFlows() {
-		OFFlowMod fm = new OFFlowMod();
-		fm.setMatch(new OFMatch());
-		fm.setActions(new ArrayList<OFAction>()); //No action means drop
+    //TODO need update, waiting for the priority feature from flow Manager
+    private void setupDefaultDropFlows() {
+        OFFlowMod fm = new OFFlowMod();
+        fm.setMatch(new OFMatch());
+        fm.setActions(new ArrayList<OFAction>()); //No action means drop
 
-		fm.setIdleTimeout((short)0)
-		.setHardTimeout((short)0)
-		.setBufferId(OFPacketOut.BUFFER_ID_NONE)
-		.setCookie(0)
-		.setCommand(OFFlowMod.OFPFC_ADD)
-		.setPriority((short)0)
-		.setLengthU(OFFlowMod.MINIMUM_LENGTH);
+        fm.setIdleTimeout((short) 0)
+                .setHardTimeout((short) 0)
+                .setBufferId(OFPacketOut.BUFFER_ID_NONE)
+                .setCookie(0)
+                .setCommand(OFFlowMod.OFPFC_ADD)
+                .setPriority((short) 0)
+                .setLengthU(OFFlowMod.MINIMUM_LENGTH);
 
-		OFFlowMod fmLLDP;
-		OFFlowMod fmBDDP;
-		try {
-			fmLLDP = fm.clone();
-			fmBDDP = fm.clone();
-		} catch (CloneNotSupportedException e1) {
-			log.error("Error cloning flow mod", e1);
-			return;
-		}
+        OFFlowMod fmLLDP;
+        OFFlowMod fmBDDP;
+        try {
+            fmLLDP = fm.clone();
+            fmBDDP = fm.clone();
+        } catch (CloneNotSupportedException e1) {
+            log.error("Error cloning flow mod", e1);
+            return;
+        }
 
-		OFMatch matchLLDP = new OFMatch();
-		matchLLDP.setDataLayerType((short)0x88cc);
-		matchLLDP.setWildcards(matchLLDP.getWildcards() & ~ OFMatch.OFPFW_DL_TYPE);
-		fmLLDP.setMatch(matchLLDP);
+        OFMatch matchLLDP = new OFMatch();
+        matchLLDP.setDataLayerType((short) 0x88cc);
+        matchLLDP.setWildcards(matchLLDP.getWildcards() & ~OFMatch.OFPFW_DL_TYPE);
+        fmLLDP.setMatch(matchLLDP);
 
-		OFMatch matchBDDP = new OFMatch();
-		matchBDDP.setDataLayerType((short)0x8942);
-		matchBDDP.setWildcards(matchBDDP.getWildcards() & ~ OFMatch.OFPFW_DL_TYPE);
-		fmBDDP.setMatch(matchBDDP);
+        OFMatch matchBDDP = new OFMatch();
+        matchBDDP.setDataLayerType((short) 0x8942);
+        matchBDDP.setWildcards(matchBDDP.getWildcards() & ~OFMatch.OFPFW_DL_TYPE);
+        fmBDDP.setMatch(matchBDDP);
 
-		OFActionOutput action = new OFActionOutput();
-		action.setPort(OFPort.OFPP_CONTROLLER.getValue());
-		action.setMaxLength((short)0xffff);
-		List<OFAction> actions = new ArrayList<OFAction>(1);
-		actions.add(action);
+        OFActionOutput action = new OFActionOutput();
+        action.setPort(OFPort.OFPP_CONTROLLER.getValue());
+        action.setMaxLength((short) 0xffff);
+        List<OFAction> actions = new ArrayList<OFAction>(1);
+        actions.add(action);
 
-		fmLLDP.setActions(actions);
-		fmBDDP.setActions(actions);
+        fmLLDP.setActions(actions);
+        fmBDDP.setActions(actions);
 
-		fmLLDP.setPriority(ARP_PRIORITY);
-		fmLLDP.setLengthU(OFFlowMod.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH);
-		fmBDDP.setPriority(ARP_PRIORITY);
-		fmBDDP.setLengthU(OFFlowMod.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH);
+        fmLLDP.setPriority(ARP_PRIORITY);
+        fmLLDP.setLengthU(OFFlowMod.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH);
+        fmBDDP.setPriority(ARP_PRIORITY);
+        fmBDDP.setLengthU(OFFlowMod.MINIMUM_LENGTH + OFActionOutput.MINIMUM_LENGTH);
 
-		List<OFFlowMod> flowModList = new ArrayList<OFFlowMod>(3);
-		flowModList.add(fm);
-		flowModList.add(fmLLDP);
-		flowModList.add(fmBDDP);
+        List<OFFlowMod> flowModList = new ArrayList<OFFlowMod>(3);
+        flowModList.add(fm);
+        flowModList.add(fmLLDP);
+        flowModList.add(fmBDDP);
 
-		for (String strdpid : switches){
-			flowCache.write(HexString.toLong(strdpid), flowModList);
-		}
-	}
+        for (String strdpid : switches) {
+            flowCache.write(HexString.toLong(strdpid), flowModList);
+        }
+    }
 
-	private void beginRouting(){
-		log.debug("Topology is now ready, beginning routing function");
-		// TODO: Fix for the new Topology Network Graph
-		// topology = topologyNetService.newDatabaseTopology();
+    private void beginRouting() {
+        log.debug("Topology is now ready, beginning routing function");
+        // TODO: Fix for the new Topology Network Graph
+        // topology = topologyNetService.newDatabaseTopology();
 
-		// Wait Pavlin's API. We need the following functions.
-		/*setupArpFlows();
-		setupDefaultDropFlows();*/
+        // Wait Pavlin's API. We need the following functions.
+        /*setupArpFlows();
+        setupDefaultDropFlows();*/
 
-		setupBgpPaths();
-		setupFullMesh();
+        setupBgpPaths();
+        setupFullMesh();
 
-		//Suppress link discovery on external-facing router ports
-		for (Interface intf : interfaces.values()) {
-			linkDiscoveryService.AddToSuppressLLDPs(intf.getDpid(), intf.getPort());
-		}
+        //Suppress link discovery on external-facing router ports
+        for (Interface intf : interfaces.values()) {
+            linkDiscoveryService.AddToSuppressLLDPs(intf.getDpid(), intf.getPort());
+        }
 
-		bgpUpdatesExecutor.execute(new Runnable() {
-			@Override
-			public void run() {
-				doUpdatesThread();
-			}
-		});
-	}
+        bgpUpdatesExecutor.execute(new Runnable() {
+            @Override
+            public void run() {
+                doUpdatesThread();
+            }
+        });
+    }
 
-	// Before inserting the paths for BGP traffic, we should check
-	// whether all the switches in the configure file are discovered by onos.
-	private void checkSwitchesConnected(){
-		for (String dpid : switches){
-		    // TODO: Fix the code below after topoSwitchSerice was removed
-		    /*
-			Iterator<ISwitchObject> activeSwitches = topoSwitchService.
-					getActiveSwitches().iterator();
-			while(activeSwitches.hasNext())
-			{
-				ISwitchObject switchObject = activeSwitches.next();
-				if (switchObject.getDPID().equals(dpid)) {
-					break;
-				}
-				if(activeSwitches.hasNext() == false) {
-					log.debug("Not all switches are here yet");
-					return;
-				}
-			}
-		    */
-		}
-		switchesConnected = true;
-	}
+    // Before inserting the paths for BGP traffic, we should check
+    // whether all the switches in the configure file are discovered by onos.
+    private void checkSwitchesConnected() {
+        for (String dpid : switches) {
+            // TODO: Fix the code below after topoSwitchSerice was removed
+            /*
+            Iterator<ISwitchObject> activeSwitches = topoSwitchService.
+                    getActiveSwitches().iterator();
+            while(activeSwitches.hasNext())
+            {
+                ISwitchObject switchObject = activeSwitches.next();
+                if (switchObject.getDPID().equals(dpid)) {
+                    break;
+                }
+                if(activeSwitches.hasNext() == false) {
+                    log.debug("Not all switches are here yet");
+                    return;
+                }
+            }
+            */
+        }
+        switchesConnected = true;
+    }
 
-	//Actually we only need to go half way round to verify full mesh connectivity
-	//(n^2)/2
-	private void checkTopologyReady(){
-		for (Interface dstInterface : interfaces.values()) {
-			for (Interface srcInterface : interfaces.values()) {
-				if (dstInterface.equals(srcInterface)) {
-					continue;
-				}
+    //Actually we only need to go half way round to verify full mesh connectivity
+    //(n^2)/2
+    private void checkTopologyReady() {
+        for (Interface dstInterface : interfaces.values()) {
+            for (Interface srcInterface : interfaces.values()) {
+                if (dstInterface.equals(srcInterface)) {
+                    continue;
+                }
 
-				// TODO: Fix for the new Topology Network Graph
-				/*
-				DataPath shortestPath = topologyNetService.getDatabaseShortestPath(
-						srcInterface.getSwitchPort(), dstInterface.getSwitchPort());
+                // TODO: Fix for the new Topology Network Graph
+                /*
+                DataPath shortestPath = topologyNetService.getDatabaseShortestPath(
+                        srcInterface.getSwitchPort(), dstInterface.getSwitchPort());
 
-				if (shortestPath == null){
-					log.debug("Shortest path between {} and {} not found",
-							srcInterface.getSwitchPort(), dstInterface.getSwitchPort());
-					return;
-				}
-				*/
-			}
-		}
-		topologyReady = true;
-	}
+                if (shortestPath == null){
+                    log.debug("Shortest path between {} and {} not found",
+                            srcInterface.getSwitchPort(), dstInterface.getSwitchPort());
+                    return;
+                }
+                */
+            }
+        }
+        topologyReady = true;
+    }
 
-	private void checkStatus(){
-		if (!switchesConnected){
-			checkSwitchesConnected();
-		}
-		boolean oldTopologyReadyStatus = topologyReady;
-		if (switchesConnected && !topologyReady){
-			checkTopologyReady();
-		}
-		if (!oldTopologyReadyStatus && topologyReady){
-			beginRouting();
-		}
-	}
+    private void checkStatus() {
+        if (!switchesConnected) {
+            checkSwitchesConnected();
+        }
+        boolean oldTopologyReadyStatus = topologyReady;
+        if (switchesConnected && !topologyReady) {
+            checkTopologyReady();
+        }
+        if (!oldTopologyReadyStatus && topologyReady) {
+            beginRouting();
+        }
+    }
 
-	private void doUpdatesThread() {
-		boolean interrupted = false;
-		try {
-			while (true) {
-				try {
-					RibUpdate update = ribUpdates.take();
-					switch (update.getOperation()){
-					case UPDATE:
-						if (validateUpdate(update)) {
-							processRibAdd(update);
-						}
-						else {
-							log.debug("Rib UPDATE out of order: {} via {}",
-									update.getPrefix(), update.getRibEntry().getNextHop());
-						}
-						break;
-					case DELETE:
-						if (validateUpdate(update)) {
-							processRibDelete(update);
-						}
-						else {
-							log.debug("Rib DELETE out of order: {} via {}",
-									update.getPrefix(), update.getRibEntry().getNextHop());
-						}
-						break;
-					}
-				} catch (InterruptedException e) {
-					log.debug("Interrupted while taking from updates queue", e);
-					interrupted = true;
-				} catch (Exception e) {
-					log.debug("exception", e);
-				}
-			}
-		} finally {
-			if (interrupted) {
-				Thread.currentThread().interrupt();
-			}
-		}
-	}
+    private void doUpdatesThread() {
+        boolean interrupted = false;
+        try {
+            while (true) {
+                try {
+                    RibUpdate update = ribUpdates.take();
+                    switch (update.getOperation()) {
+                        case UPDATE:
+                            if (validateUpdate(update)) {
+                                processRibAdd(update);
+                            } else {
+                                log.debug("Rib UPDATE out of order: {} via {}",
+                                        update.getPrefix(), update.getRibEntry().getNextHop());
+                            }
+                            break;
+                        case DELETE:
+                            if (validateUpdate(update)) {
+                                processRibDelete(update);
+                            } else {
+                                log.debug("Rib DELETE out of order: {} via {}",
+                                        update.getPrefix(), update.getRibEntry().getNextHop());
+                            }
+                            break;
+                    }
+                } catch (InterruptedException e) {
+                    log.debug("Interrupted while taking from updates queue", e);
+                    interrupted = true;
+                } catch (Exception e) {
+                    log.debug("exception", e);
+                }
+            }
+        } finally {
+            if (interrupted) {
+                Thread.currentThread().interrupt();
+            }
+        }
+    }
 
-	private boolean validateUpdate(RibUpdate update) {
-		RibEntry newEntry = update.getRibEntry();
-		RibEntry oldEntry = ptree.lookup(update.getPrefix());
+    private boolean validateUpdate(RibUpdate update) {
+        RibEntry newEntry = update.getRibEntry();
+        RibEntry oldEntry = ptree.lookup(update.getPrefix());
 
-		//If there is no existing entry we must assume this is the most recent
-		//update. However this might not always be the case as we might have a
-		//POST then DELETE reordering.
-		//if (oldEntry == null || !newEntry.getNextHop().equals(oldEntry.getNextHop())) {
-		if (oldEntry == null) {
-			return true;
-		}
+        //If there is no existing entry we must assume this is the most recent
+        //update. However this might not always be the case as we might have a
+        //POST then DELETE reordering.
+        //if (oldEntry == null || !newEntry.getNextHop().equals(oldEntry.getNextHop())) {
+        if (oldEntry == null) {
+            return true;
+        }
 
-		// This handles the case where routes are gathered in the initial
-		// request because they don't have sequence number info
-		if (newEntry.getSysUpTime() == -1 && newEntry.getSequenceNum() == -1) {
-			return true;
-		}
+        // This handles the case where routes are gathered in the initial
+        // request because they don't have sequence number info
+        if (newEntry.getSysUpTime() == -1 && newEntry.getSequenceNum() == -1) {
+            return true;
+        }
 
-		if (newEntry.getSysUpTime() > oldEntry.getSysUpTime()) {
-			return true;
-		}
-		else if (newEntry.getSysUpTime() == oldEntry.getSysUpTime()) {
-			if (newEntry.getSequenceNum() > oldEntry.getSequenceNum()) {
-				return true;
-			}
-			else {
-				return false;
-			}
-		}
-		else {
-			return false;
-		}
-	}
+        if (newEntry.getSysUpTime() > oldEntry.getSysUpTime()) {
+            return true;
+        } else if (newEntry.getSysUpTime() == oldEntry.getSysUpTime()) {
+            if (newEntry.getSequenceNum() > oldEntry.getSequenceNum()) {
+                return true;
+            } else {
+                return false;
+            }
+        } else {
+            return false;
+        }
+    }
 
-	// The code below should be reimplemented after removal of Floodlight's 
-	// ITopologyService API. It should be implemented on top of network graph
-	// notifications. (It was pretty hacky anyway...)
-	/*
-	@Override
-	public void topologyChanged() {
-		if (topologyReady) {
-			return;
-		}
+    // The code below should be reimplemented after removal of Floodlight's
+    // ITopologyService API. It should be implemented on top of network graph
+    // notifications. (It was pretty hacky anyway...)
+    /*
+    @Override
+    public void topologyChanged() {
+        if (topologyReady) {
+            return;
+        }
 
-		boolean refreshNeeded = false;
-		for (LDUpdate ldu : topologyService.getLastLinkUpdates()){
-			if (!ldu.getOperation().equals(ILinkDiscovery.UpdateOperation.LINK_UPDATED)){
-				//We don't need to recalculate anything for just link updates
-				//They happen very frequently
-				refreshNeeded = true;
-			}
+        boolean refreshNeeded = false;
+        for (LDUpdate ldu : topologyService.getLastLinkUpdates()){
+            if (!ldu.getOperation().equals(ILinkDiscovery.UpdateOperation.LINK_UPDATED)){
+                //We don't need to recalculate anything for just link updates
+                //They happen very frequently
+                refreshNeeded = true;
+            }
 
-			log.debug("Topo change {}", ldu.getOperation());
+            log.debug("Topo change {}", ldu.getOperation());
 
-			if (ldu.getOperation().equals(ILinkDiscovery.UpdateOperation.LINK_ADDED)){
-				synchronized (linkUpdates) {
-					linkUpdates.add(ldu);
-				}
-			}
-		}
+            if (ldu.getOperation().equals(ILinkDiscovery.UpdateOperation.LINK_ADDED)){
+                synchronized (linkUpdates) {
+                    linkUpdates.add(ldu);
+                }
+            }
+        }
 
-		if (refreshNeeded && !topologyReady){
-			topologyChangeDetectorTask.reschedule(TOPO_DETECTION_WAIT, TimeUnit.SECONDS);
-		}
-	}
-	*/
+        if (refreshNeeded && !topologyReady){
+            topologyChangeDetectorTask.reschedule(TOPO_DETECTION_WAIT, TimeUnit.SECONDS);
+        }
+    }
+    */
 
-	@Override
-	public void addedSwitch(IOFSwitch sw) {
-		if (!topologyReady) {
-			sw.clearAllFlowMods();
-		}
+    @Override
+    public void addedSwitch(IOFSwitch sw) {
+        if (!topologyReady) {
+            sw.clearAllFlowMods();
+        }
 
-		flowCache.switchConnected(sw);
-	}
+        flowCache.switchConnected(sw);
+    }
 
-	@Override
-	public void removedSwitch(IOFSwitch sw) {}
+    @Override
+    public void removedSwitch(IOFSwitch sw) {
+    }
 
-	@Override
-	public void switchPortChanged(Long switchId) {}
+    @Override
+    public void switchPortChanged(Long switchId) {
+    }
 
-	@Override
-	public String getName() {
-		return "BgpRoute";
-	}
+    @Override
+    public String getName() {
+        return "BgpRoute";
+    }
 
-	/*
-	 * IConfigInfoService methods
-	 */
+    /*
+     * IConfigInfoService methods
+     */
 
-	@Override
-	public boolean isInterfaceAddress(InetAddress address) {
-		Interface intf = interfacePtrie.match(new Prefix(address.getAddress(), 32));
-		return (intf != null && intf.getIpAddress().equals(address));
-	}
+    @Override
+    public boolean isInterfaceAddress(InetAddress address) {
+        Interface intf = interfacePtrie.match(new Prefix(address.getAddress(), 32));
+        return (intf != null && intf.getIpAddress().equals(address));
+    }
 
-	@Override
-	public boolean inConnectedNetwork(InetAddress address) {
-		Interface intf = interfacePtrie.match(new Prefix(address.getAddress(), 32));
-		return (intf != null && !intf.getIpAddress().equals(address));
-	}
+    @Override
+    public boolean inConnectedNetwork(InetAddress address) {
+        Interface intf = interfacePtrie.match(new Prefix(address.getAddress(), 32));
+        return (intf != null && !intf.getIpAddress().equals(address));
+    }
 
-	@Override
-	public boolean fromExternalNetwork(long inDpid, short inPort) {
-		for (Interface intf : interfaces.values()) {
-			if (intf.getDpid() == inDpid && intf.getPort() == inPort) {
-				return true;
-			}
-		}
-		return false;
-	}
+    @Override
+    public boolean fromExternalNetwork(long inDpid, short inPort) {
+        for (Interface intf : interfaces.values()) {
+            if (intf.getDpid() == inDpid && intf.getPort() == inPort) {
+                return true;
+            }
+        }
+        return false;
+    }
 
-	@Override
-	public Interface getOutgoingInterface(InetAddress dstIpAddress) {
-		return interfacePtrie.match(new Prefix(dstIpAddress.getAddress(), 32));
-	}
+    @Override
+    public Interface getOutgoingInterface(InetAddress dstIpAddress) {
+        return interfacePtrie.match(new Prefix(dstIpAddress.getAddress(), 32));
+    }
 
-	@Override
-	public boolean hasLayer3Configuration() {
-		return !interfaces.isEmpty();
-	}
+    @Override
+    public boolean hasLayer3Configuration() {
+        return !interfaces.isEmpty();
+    }
 
-	@Override
-	public MACAddress getRouterMacAddress() {
-		return bgpdMacAddress;
-	}
+    @Override
+    public MACAddress getRouterMacAddress() {
+        return bgpdMacAddress;
+    }
 
-	@Override
-	public short getVlan() {
-		return vlan;
-	}
+    @Override
+    public short getVlan() {
+        return vlan;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteResource.java b/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteResource.java
index cbb1634..2e14757 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteResource.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteResource.java
@@ -13,164 +13,160 @@
 
 public class BgpRouteResource extends ServerResource {
 
-	protected final static Logger log = LoggerFactory.getLogger(BgpRouteResource.class);
+    protected final static Logger log = LoggerFactory.getLogger(BgpRouteResource.class);
 
-	@Get
-	public String get(String fmJson) {
-		String dest = (String) getRequestAttributes().get("dest");
-		String output = "";
-		IBgpRouteService bgpRoute = (IBgpRouteService)getContext().getAttributes().
-				get(IBgpRouteService.class.getCanonicalName());
+    @Get
+    public String get(String fmJson) {
+        String dest = (String) getRequestAttributes().get("dest");
+        String output = "";
+        IBgpRouteService bgpRoute = (IBgpRouteService) getContext().getAttributes().
+                get(IBgpRouteService.class.getCanonicalName());
 
-		if (dest != null) {
-			//TODO Needs to be changed to use the new RestClient.get().
+        if (dest != null) {
+            //TODO Needs to be changed to use the new RestClient.get().
 
-			// the dest here refers to router-id
-			//bgpdRestIp includes port number, such as 1.1.1.1:8080
-			String BGPdRestIp = bgpRoute.getBGPdRestIp();
-			String url="http://"+BGPdRestIp+"/wm/bgp/"+dest;
+            // the dest here refers to router-id
+            //bgpdRestIp includes port number, such as 1.1.1.1:8080
+            String BGPdRestIp = bgpRoute.getBGPdRestIp();
+            String url = "http://" + BGPdRestIp + "/wm/bgp/" + dest;
 
-			//Doesn't actually do anything with the response
-			RestClient.get(url); 
-			
-			output="Get rib from bgpd finished!\n";
-			return output;
-		} 
-		else {
-			IPatriciaTrie<RibEntry> ptree = bgpRoute.getPtree();
-			output += "{\n  \"rib\": [\n";
-			boolean printed = false;
-			
-			synchronized(ptree) {
-				Iterator<IPatriciaTrie.Entry<RibEntry>> it = ptree.iterator();
-				while (it.hasNext()) {
-					IPatriciaTrie.Entry<RibEntry> entry = it.next();
-					
-					if (printed == true) {
-						output += ",\n";
-					}
-					
-					output += "    {\"prefix\": \"" + entry.getPrefix() +"\", ";
-					output += "\"nexthop\": \"" + entry.getValue().getNextHop().getHostAddress() +"\"}";
-					
-					printed = true;
-				}
-			}
-			
-			output += "\n  ]\n}\n";
-		}
-		
-		return output;
-	}
+            //Doesn't actually do anything with the response
+            RestClient.get(url);
 
-	@Post
-	public String store(String fmJson) {
-		IBgpRouteService bgpRoute = (IBgpRouteService) getContext().getAttributes().
-				get(IBgpRouteService.class.getCanonicalName());
+            output = "Get rib from bgpd finished!\n";
+            return output;
+        } else {
+            IPatriciaTrie<RibEntry> ptree = bgpRoute.getPtree();
+            output += "{\n  \"rib\": [\n";
+            boolean printed = false;
 
-		String strSysuptime = (String) getRequestAttributes().get("sysuptime");
-		String strSequence = (String) getRequestAttributes().get("sequence");
-		String routerId = (String) getRequestAttributes().get("routerid");
-		String prefix = (String) getRequestAttributes().get("prefix");
-		String mask = (String) getRequestAttributes().get("mask");
-		String nexthop = (String) getRequestAttributes().get("nexthop");
-		String capability = (String) getRequestAttributes().get("capability");
-		
-		log.debug("sysuptime: {}", strSysuptime);
-		log.debug("sequence: {}", strSequence);
+            synchronized (ptree) {
+                Iterator<IPatriciaTrie.Entry<RibEntry>> it = ptree.iterator();
+                while (it.hasNext()) {
+                    IPatriciaTrie.Entry<RibEntry> entry = it.next();
 
-		String reply = "";
+                    if (printed == true) {
+                        output += ",\n";
+                    }
 
-		if (capability == null) {
-			// this is a prefix add
-			Prefix p;
-			long sysUpTime, sequenceNum;
-			try {
-				p = new Prefix(prefix, Integer.valueOf(mask));
-				sysUpTime = Long.parseLong(strSysuptime);
-				sequenceNum = Long.parseLong(strSequence);
-			} catch (NumberFormatException e) {
-				reply = "[POST: mask format is wrong]";
-				log.info(reply);
-				return reply + "\n";				
-			} catch (IllegalArgumentException e1) {
-				reply = "[POST: prefix format is wrong]";
-				log.info(reply);
-				return reply + "\n";
-			}
-			
-			RibEntry rib = new RibEntry(routerId, nexthop, sysUpTime, sequenceNum);
+                    output += "    {\"prefix\": \"" + entry.getPrefix() + "\", ";
+                    output += "\"nexthop\": \"" + entry.getValue().getNextHop().getHostAddress() + "\"}";
 
-			bgpRoute.newRibUpdate(new RibUpdate(Operation.UPDATE, p, rib));
-			
-			reply = "[POST: " + prefix + "/" + mask + ":" + nexthop + "]";
-			log.info(reply);
-		}
-		else if(capability.equals("1")) {
-			reply = "[POST-capability: " + capability + "]\n";
-			log.info(reply);
-			// to store the number in the top node of the Ptree	
-		}
-		else {			
-			reply = "[POST-capability: " + capability + "]\n";
-			log.info(reply);
-			// to store the number in the top node of the Ptree	
-		}
+                    printed = true;
+                }
+            }
 
-		return reply + "\n";
-	}
+            output += "\n  ]\n}\n";
+        }
 
-	@Delete
-	public String delete(String fmJson) {
-		IBgpRouteService bgpRoute = (IBgpRouteService)getContext().getAttributes().
-				get(IBgpRouteService.class.getCanonicalName());
+        return output;
+    }
 
-		String strSysuptime = (String) getRequestAttributes().get("sysuptime");
-		String strSequence = (String) getRequestAttributes().get("sequence");
-		String routerId = (String) getRequestAttributes().get("routerid");
-		String prefix = (String) getRequestAttributes().get("prefix");
-		String mask = (String) getRequestAttributes().get("mask");
-		String nextHop = (String) getRequestAttributes().get("nexthop");
-		String capability = (String) getRequestAttributes().get("capability");
+    @Post
+    public String store(String fmJson) {
+        IBgpRouteService bgpRoute = (IBgpRouteService) getContext().getAttributes().
+                get(IBgpRouteService.class.getCanonicalName());
 
-		log.debug("sysuptime: {}", strSysuptime);
-		log.debug("sequence: {}", strSequence);
-		
-		String reply = "";
+        String strSysuptime = (String) getRequestAttributes().get("sysuptime");
+        String strSequence = (String) getRequestAttributes().get("sequence");
+        String routerId = (String) getRequestAttributes().get("routerid");
+        String prefix = (String) getRequestAttributes().get("prefix");
+        String mask = (String) getRequestAttributes().get("mask");
+        String nexthop = (String) getRequestAttributes().get("nexthop");
+        String capability = (String) getRequestAttributes().get("capability");
 
-		if (capability == null) {
-			// this is a prefix delete
-			Prefix p;
-			long sysUpTime, sequenceNum;
-			try {
-				p = new Prefix(prefix, Integer.valueOf(mask));
-				sysUpTime = Long.parseLong(strSysuptime);
-				sequenceNum = Long.parseLong(strSequence);
-			} catch (NumberFormatException e) {
-				reply = "[DELE: mask format is wrong]";
-				log.info(reply);
-				return reply + "\n";
-			} catch (IllegalArgumentException e1) {
-				reply = "[DELE: prefix format is wrong]";
-				log.info(reply);
-				return reply + "\n";
-			}
-			
-			RibEntry r = new RibEntry(routerId, nextHop, sysUpTime, sequenceNum);
-			
-			bgpRoute.newRibUpdate(new RibUpdate(Operation.DELETE, p, r));
-			
-			reply =reply + "[DELE: " + prefix + "/" + mask + ":" + nextHop + "]";
-		}
-		else {
-			// clear the local rib: Ptree			
-			bgpRoute.clearPtree();
-			reply = "[DELE-capability: " + capability + "; The local RibEntry is cleared!]\n";
+        log.debug("sysuptime: {}", strSysuptime);
+        log.debug("sequence: {}", strSequence);
 
-			// to store the number in the top node of the Ptree	
-		}
-		
-		log.info(reply);
-		return reply + "\n";
-	}
+        String reply = "";
+
+        if (capability == null) {
+            // this is a prefix add
+            Prefix p;
+            long sysUpTime, sequenceNum;
+            try {
+                p = new Prefix(prefix, Integer.valueOf(mask));
+                sysUpTime = Long.parseLong(strSysuptime);
+                sequenceNum = Long.parseLong(strSequence);
+            } catch (NumberFormatException e) {
+                reply = "[POST: mask format is wrong]";
+                log.info(reply);
+                return reply + "\n";
+            } catch (IllegalArgumentException e1) {
+                reply = "[POST: prefix format is wrong]";
+                log.info(reply);
+                return reply + "\n";
+            }
+
+            RibEntry rib = new RibEntry(routerId, nexthop, sysUpTime, sequenceNum);
+
+            bgpRoute.newRibUpdate(new RibUpdate(Operation.UPDATE, p, rib));
+
+            reply = "[POST: " + prefix + "/" + mask + ":" + nexthop + "]";
+            log.info(reply);
+        } else if (capability.equals("1")) {
+            reply = "[POST-capability: " + capability + "]\n";
+            log.info(reply);
+            // to store the number in the top node of the Ptree
+        } else {
+            reply = "[POST-capability: " + capability + "]\n";
+            log.info(reply);
+            // to store the number in the top node of the Ptree
+        }
+
+        return reply + "\n";
+    }
+
+    @Delete
+    public String delete(String fmJson) {
+        IBgpRouteService bgpRoute = (IBgpRouteService) getContext().getAttributes().
+                get(IBgpRouteService.class.getCanonicalName());
+
+        String strSysuptime = (String) getRequestAttributes().get("sysuptime");
+        String strSequence = (String) getRequestAttributes().get("sequence");
+        String routerId = (String) getRequestAttributes().get("routerid");
+        String prefix = (String) getRequestAttributes().get("prefix");
+        String mask = (String) getRequestAttributes().get("mask");
+        String nextHop = (String) getRequestAttributes().get("nexthop");
+        String capability = (String) getRequestAttributes().get("capability");
+
+        log.debug("sysuptime: {}", strSysuptime);
+        log.debug("sequence: {}", strSequence);
+
+        String reply = "";
+
+        if (capability == null) {
+            // this is a prefix delete
+            Prefix p;
+            long sysUpTime, sequenceNum;
+            try {
+                p = new Prefix(prefix, Integer.valueOf(mask));
+                sysUpTime = Long.parseLong(strSysuptime);
+                sequenceNum = Long.parseLong(strSequence);
+            } catch (NumberFormatException e) {
+                reply = "[DELE: mask format is wrong]";
+                log.info(reply);
+                return reply + "\n";
+            } catch (IllegalArgumentException e1) {
+                reply = "[DELE: prefix format is wrong]";
+                log.info(reply);
+                return reply + "\n";
+            }
+
+            RibEntry r = new RibEntry(routerId, nextHop, sysUpTime, sequenceNum);
+
+            bgpRoute.newRibUpdate(new RibUpdate(Operation.DELETE, p, r));
+
+            reply = reply + "[DELE: " + prefix + "/" + mask + ":" + nextHop + "]";
+        } else {
+            // clear the local rib: Ptree
+            bgpRoute.clearPtree();
+            reply = "[DELE-capability: " + capability + "; The local RibEntry is cleared!]\n";
+
+            // to store the number in the top node of the Ptree
+        }
+
+        log.info(reply);
+        return reply + "\n";
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteResourceSynch.java b/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteResourceSynch.java
index 5e33bc5..20fc71b 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteResourceSynch.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteResourceSynch.java
@@ -9,63 +9,65 @@
 
 
 public class BgpRouteResourceSynch extends ServerResource {
-    
-	protected final static Logger log = LoggerFactory
+
+    protected final static Logger log = LoggerFactory
             .getLogger(BgpRouteResource.class);
-	
-	@Post
-	public String store(String fmJson) {
-		
-		IBgpRouteService bgpRoute = (IBgpRouteService)getContext().getAttributes().
+
+    @Post
+    public String store(String fmJson) {
+
+        IBgpRouteService bgpRoute = (IBgpRouteService) getContext().getAttributes().
                 get(IBgpRouteService.class.getCanonicalName());
-	  
-		String router_id = (String) getRequestAttributes().get("routerid");
-		String prefix = (String) getRequestAttributes().get("prefix");
-		String mask = (String) getRequestAttributes().get("mask");
-		String nexthop = (String) getRequestAttributes().get("nexthop");
-				
-			try{		
-				
-			String BGPdRestIp = bgpRoute.getBGPdRestIp();	
-				
-			//bgpdRestIp includes port number, such as 1.1.1.1:8080
-			RestClient.post("http://"+BGPdRestIp+"/wm/bgp/"+router_id+"/"+prefix+"/"+mask+"/"+nexthop);
-			}catch(Exception e)
-			{e.printStackTrace();}
-			
-			String reply = "";
-			reply = "[POST: " + prefix + "/" + mask + ":" + nexthop + "/synch]";
-			log.info(reply);
-			
-    return reply + "\n";
-		
-	
-	}
-	
-	@Delete
-	public String delete(String fmJson) {
-		IBgpRouteService bgpRoute = (IBgpRouteService)getContext().getAttributes().
-                get(IBgpRouteService.class.getCanonicalName());
-        
-		String routerId = (String) getRequestAttributes().get("routerid");
-		String prefix = (String) getRequestAttributes().get("prefix");
-		String mask = (String) getRequestAttributes().get("mask");
-		String nextHop = (String) getRequestAttributes().get("nexthop");
-		
-		String reply = "";
-		try{
-					String BGPdRestIp = bgpRoute.getBGPdRestIp();	
-						
-					RestClient.delete("http://"+BGPdRestIp+"/wm/bgp/"+routerId+"/"+prefix+"/"+mask+"/"+nextHop);	
-														
-		}catch(Exception e)
-		{e.printStackTrace();}
-		
-		reply =reply + "[DELE: " + prefix + "/" + mask + ":" + nextHop + "/synch]";
-					
-		log.info(reply);		
+
+        String router_id = (String) getRequestAttributes().get("routerid");
+        String prefix = (String) getRequestAttributes().get("prefix");
+        String mask = (String) getRequestAttributes().get("mask");
+        String nexthop = (String) getRequestAttributes().get("nexthop");
+
+        try {
+
+            String BGPdRestIp = bgpRoute.getBGPdRestIp();
+
+            //bgpdRestIp includes port number, such as 1.1.1.1:8080
+            RestClient.post("http://" + BGPdRestIp + "/wm/bgp/" + router_id + "/" + prefix + "/" + mask + "/" + nexthop);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        String reply = "";
+        reply = "[POST: " + prefix + "/" + mask + ":" + nexthop + "/synch]";
+        log.info(reply);
+
+        return reply + "\n";
 
 
-		return reply + "\n";
-	}
+    }
+
+    @Delete
+    public String delete(String fmJson) {
+        IBgpRouteService bgpRoute = (IBgpRouteService) getContext().getAttributes().
+                get(IBgpRouteService.class.getCanonicalName());
+
+        String routerId = (String) getRequestAttributes().get("routerid");
+        String prefix = (String) getRequestAttributes().get("prefix");
+        String mask = (String) getRequestAttributes().get("mask");
+        String nextHop = (String) getRequestAttributes().get("nexthop");
+
+        String reply = "";
+        try {
+            String BGPdRestIp = bgpRoute.getBGPdRestIp();
+
+            RestClient.delete("http://" + BGPdRestIp + "/wm/bgp/" + routerId + "/" + prefix + "/" + mask + "/" + nextHop);
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        reply = reply + "[DELE: " + prefix + "/" + mask + ":" + nextHop + "/synch]";
+
+        log.info(reply);
+
+
+        return reply + "\n";
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteWebRoutable.java b/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteWebRoutable.java
index 7d304e8..a05015e 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteWebRoutable.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/BgpRouteWebRoutable.java
@@ -7,19 +7,19 @@
 import org.restlet.routing.Router;
 
 public class BgpRouteWebRoutable implements RestletRoutable {
-	@Override
-	public Restlet getRestlet(Context context) {
-		Router router = new Router(context);
-		router.attach("/json", BgpRouteResource.class);
-		router.attach("/rib/{dest}", BgpRouteResource.class);
-		router.attach("/{sysuptime}/{sequence}/{routerid}/{prefix}/{mask}/{nexthop}", BgpRouteResource.class);		
-		router.attach("/{routerid}/{prefix}/{mask}/{nexthop}/synch", BgpRouteResourceSynch.class);
-		router.attach("/{routerid}/{capability}", BgpRouteResource.class);
-		return router;
-	}
-	
-	@Override
-	public String basePath() {
-		return "/wm/bgp";
-	}
+    @Override
+    public Restlet getRestlet(Context context) {
+        Router router = new Router(context);
+        router.attach("/json", BgpRouteResource.class);
+        router.attach("/rib/{dest}", BgpRouteResource.class);
+        router.attach("/{sysuptime}/{sequence}/{routerid}/{prefix}/{mask}/{nexthop}", BgpRouteResource.class);
+        router.attach("/{routerid}/{prefix}/{mask}/{nexthop}/synch", BgpRouteResourceSynch.class);
+        router.attach("/{routerid}/{capability}", BgpRouteResource.class);
+        return router;
+    }
+
+    @Override
+    public String basePath() {
+        return "/wm/bgp";
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/Configuration.java b/src/main/java/net/onrc/onos/apps/bgproute/Configuration.java
index 6f02fe3..314324d 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/Configuration.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/Configuration.java
@@ -9,79 +9,79 @@
 import org.openflow.util.HexString;
 
 public class Configuration {
-	private long bgpdAttachmentDpid;
-	private short bgpdAttachmentPort;
-	private MACAddress bgpdMacAddress;
-	private short vlan;
-	private List<String> switches;
-	private List<Interface> interfaces;
-	private List<BgpPeer> peers;
-	
-	public Configuration() {
-		// TODO Auto-generated constructor stub
-	}
+    private long bgpdAttachmentDpid;
+    private short bgpdAttachmentPort;
+    private MACAddress bgpdMacAddress;
+    private short vlan;
+    private List<String> switches;
+    private List<Interface> interfaces;
+    private List<BgpPeer> peers;
 
-	public long getBgpdAttachmentDpid() {
-		return bgpdAttachmentDpid;
-	}
+    public Configuration() {
+        // TODO Auto-generated constructor stub
+    }
 
-	@JsonProperty("bgpdAttachmentDpid")
-	public void setBgpdAttachmentDpid(String bgpdAttachmentDpid) {
-		this.bgpdAttachmentDpid = HexString.toLong(bgpdAttachmentDpid);
-	}
+    public long getBgpdAttachmentDpid() {
+        return bgpdAttachmentDpid;
+    }
 
-	public short getBgpdAttachmentPort() {
-		return bgpdAttachmentPort;
-	}
+    @JsonProperty("bgpdAttachmentDpid")
+    public void setBgpdAttachmentDpid(String bgpdAttachmentDpid) {
+        this.bgpdAttachmentDpid = HexString.toLong(bgpdAttachmentDpid);
+    }
 
-	@JsonProperty("bgpdAttachmentPort")
-	public void setBgpdAttachmentPort(short bgpdAttachmentPort) {
-		this.bgpdAttachmentPort = bgpdAttachmentPort;
-	}
-	
-	public MACAddress getBgpdMacAddress() {
-		return bgpdMacAddress;
-	}
+    public short getBgpdAttachmentPort() {
+        return bgpdAttachmentPort;
+    }
 
-	@JsonProperty("bgpdMacAddress")
-	public void setBgpdMacAddress(String strMacAddress) {
-		this.bgpdMacAddress = MACAddress.valueOf(strMacAddress);
-	}
-	
-	public List<String> getSwitches() {
-		return Collections.unmodifiableList(switches);
-	}
-	
-	@JsonProperty("vlan")
-	public void setVlan(short vlan) {
-		this.vlan = vlan;
-	}
-	
-	public short getVlan() {
-		return vlan;
-	}
+    @JsonProperty("bgpdAttachmentPort")
+    public void setBgpdAttachmentPort(short bgpdAttachmentPort) {
+        this.bgpdAttachmentPort = bgpdAttachmentPort;
+    }
 
-	@JsonProperty("switches")
-	public void setSwitches(List<String> switches) {
-		this.switches = switches;
-	}
-	
-	public List<Interface> getInterfaces() {
-		return Collections.unmodifiableList(interfaces);
-	}
+    public MACAddress getBgpdMacAddress() {
+        return bgpdMacAddress;
+    }
 
-	@JsonProperty("interfaces")
-	public void setInterfaces(List<Interface> interfaces) {
-		this.interfaces = interfaces;
-	}
-	
-	public List<BgpPeer> getPeers() {
-		return Collections.unmodifiableList(peers);
-	}
+    @JsonProperty("bgpdMacAddress")
+    public void setBgpdMacAddress(String strMacAddress) {
+        this.bgpdMacAddress = MACAddress.valueOf(strMacAddress);
+    }
 
-	@JsonProperty("bgpPeers")
-	public void setPeers(List<BgpPeer> peers) {
-		this.peers = peers;
-	}
+    public List<String> getSwitches() {
+        return Collections.unmodifiableList(switches);
+    }
+
+    @JsonProperty("vlan")
+    public void setVlan(short vlan) {
+        this.vlan = vlan;
+    }
+
+    public short getVlan() {
+        return vlan;
+    }
+
+    @JsonProperty("switches")
+    public void setSwitches(List<String> switches) {
+        this.switches = switches;
+    }
+
+    public List<Interface> getInterfaces() {
+        return Collections.unmodifiableList(interfaces);
+    }
+
+    @JsonProperty("interfaces")
+    public void setInterfaces(List<Interface> interfaces) {
+        this.interfaces = interfaces;
+    }
+
+    public List<BgpPeer> getPeers() {
+        return Collections.unmodifiableList(peers);
+    }
+
+    @JsonProperty("bgpPeers")
+    public void setPeers(List<BgpPeer> peers) {
+        this.peers = peers;
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/FlowCache.java b/src/main/java/net/onrc/onos/apps/bgproute/FlowCache.java
index 31bbc95..145224b 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/FlowCache.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/FlowCache.java
@@ -19,140 +19,138 @@
 import org.slf4j.LoggerFactory;
 
 public class FlowCache {
-	private final static Logger log = LoggerFactory.getLogger(FlowCache.class);
-	
-	private IFloodlightProviderService floodlightProvider;
-	
-	private Map<Long, List<OFFlowMod>> flowCache;
-	
-	private Comparator<OFFlowMod> cookieComparator = new Comparator<OFFlowMod>() {
-		@Override
-		public int compare(OFFlowMod fm1, OFFlowMod fm2) {
-			long difference = fm2.getCookie() - fm1.getCookie(); 
-			
-			if (difference > 0) {
-				return 1;
-			}
-			else if (difference < 0) {
-				return -1;
-			}
-			else {
-				return 0;
-			}
-		}
-	};
-	
-	public FlowCache(IFloodlightProviderService floodlightProvider) {
-		this.floodlightProvider = floodlightProvider;
-		
-		flowCache = new HashMap<Long, List<OFFlowMod>>();
-	}
+    private final static Logger log = LoggerFactory.getLogger(FlowCache.class);
 
-	public synchronized void write(long dpid, OFFlowMod flowMod) {
-		List<OFFlowMod> flowModList = new ArrayList<OFFlowMod>(1);
-		flowModList.add(flowMod);
-		write(dpid, flowModList);
-	}
-	
-	public synchronized void write(long dpid, List<OFFlowMod> flowMods) {
-		ensureCacheForSwitch(dpid);
-		
-		List<OFFlowMod> clones = new ArrayList<OFFlowMod>(flowMods.size());
-		
-		//Somehow the OFFlowMods we get passed in will change later on.
-		//No idea how this happens, but we can just clone to prevent problems
-		try {
-			for (OFFlowMod fm : flowMods) {
-				clones.add(fm.clone());
-			}
-		} catch (CloneNotSupportedException e) {
-			log.debug("Clone exception", e);
-		}
-		
-		flowCache.get(dpid).addAll(clones);
-		
-		IOFSwitch sw = floodlightProvider.getSwitches().get(dpid);
-		
-		if (sw == null) {
-			log.debug("Switch not found when writing flow mods");
-			return;
-		}
+    private IFloodlightProviderService floodlightProvider;
 
-		List<OFMessage> msgList = new ArrayList<OFMessage>(clones.size());
-		msgList.addAll(clones);
-		
-		try {
-			sw.write(msgList, null);
-		} catch (IOException e) {
-			log.error("Error writing to switch", e);
-		}
-		
+    private Map<Long, List<OFFlowMod>> flowCache;
 
-	}
-	
-	public synchronized void delete(long dpid, OFFlowMod flowMod) {
-		List<OFFlowMod> flowModList = new ArrayList<OFFlowMod>(1);
-		flowModList.add(flowMod);
-		delete(dpid, flowModList);
-	}
-	
-	public synchronized void delete(long dpid, List<OFFlowMod> flowMods) {
-		ensureCacheForSwitch(dpid);
-		
-		//Remove the flow mods from the cache first before we alter them
-		flowCache.get(dpid).removeAll(flowMods);
-		
-		//Alter the original flow mods to make them delete flow mods
-		for (OFFlowMod fm : flowMods) {
-			fm.setCommand(OFFlowMod.OFPFC_DELETE_STRICT)
-			.setOutPort(OFPort.OFPP_NONE)
-			.setLengthU(OFFlowMod.MINIMUM_LENGTH);
-			
-			fm.getActions().clear();
-		}
-		
-		IOFSwitch sw = floodlightProvider.getSwitches().get(dpid);
-		if (sw == null) {
-			log.debug("Switch not found when writing flow mods");
-			return;
-		}
-		
-		List<OFMessage> msgList = new ArrayList<OFMessage>(flowMods.size());
-		msgList.addAll(flowMods);
-		
-		try {
-			sw.write(msgList, null);
-		} catch (IOException e) {
-			log.error("Error writing to switch", e);
-		}
-	}
-	
-	//TODO can the Prontos handle being sent all flow mods in one message?
-	public synchronized void switchConnected(IOFSwitch sw) {
-		log.debug("Switch connected: {}", sw);
-		
-		ensureCacheForSwitch(sw.getId());
-		
-		List<OFFlowMod> flowMods = flowCache.get(sw.getId());
+    private Comparator<OFFlowMod> cookieComparator = new Comparator<OFFlowMod>() {
+        @Override
+        public int compare(OFFlowMod fm1, OFFlowMod fm2) {
+            long difference = fm2.getCookie() - fm1.getCookie();
 
-		Collections.sort(flowMods, cookieComparator);
-		
-		sw.clearAllFlowMods();
-		
-		List<OFMessage> messages = new ArrayList<OFMessage>(flowMods.size());
-		messages.addAll(flowMods);
-		
-		try {
-			sw.write(messages, null);
-		} catch (IOException e) {
-			log.error("Failure writing flow mods to switch {}",
-					HexString.toHexString(sw.getId()));
-		}		
-	}
-	
-	private void ensureCacheForSwitch(long dpid) {
-		if (!flowCache.containsKey(dpid)) {
-			flowCache.put(dpid, new ArrayList<OFFlowMod>());
-		}
-	}
+            if (difference > 0) {
+                return 1;
+            } else if (difference < 0) {
+                return -1;
+            } else {
+                return 0;
+            }
+        }
+    };
+
+    public FlowCache(IFloodlightProviderService floodlightProvider) {
+        this.floodlightProvider = floodlightProvider;
+
+        flowCache = new HashMap<Long, List<OFFlowMod>>();
+    }
+
+    public synchronized void write(long dpid, OFFlowMod flowMod) {
+        List<OFFlowMod> flowModList = new ArrayList<OFFlowMod>(1);
+        flowModList.add(flowMod);
+        write(dpid, flowModList);
+    }
+
+    public synchronized void write(long dpid, List<OFFlowMod> flowMods) {
+        ensureCacheForSwitch(dpid);
+
+        List<OFFlowMod> clones = new ArrayList<OFFlowMod>(flowMods.size());
+
+        //Somehow the OFFlowMods we get passed in will change later on.
+        //No idea how this happens, but we can just clone to prevent problems
+        try {
+            for (OFFlowMod fm : flowMods) {
+                clones.add(fm.clone());
+            }
+        } catch (CloneNotSupportedException e) {
+            log.debug("Clone exception", e);
+        }
+
+        flowCache.get(dpid).addAll(clones);
+
+        IOFSwitch sw = floodlightProvider.getSwitches().get(dpid);
+
+        if (sw == null) {
+            log.debug("Switch not found when writing flow mods");
+            return;
+        }
+
+        List<OFMessage> msgList = new ArrayList<OFMessage>(clones.size());
+        msgList.addAll(clones);
+
+        try {
+            sw.write(msgList, null);
+        } catch (IOException e) {
+            log.error("Error writing to switch", e);
+        }
+
+
+    }
+
+    public synchronized void delete(long dpid, OFFlowMod flowMod) {
+        List<OFFlowMod> flowModList = new ArrayList<OFFlowMod>(1);
+        flowModList.add(flowMod);
+        delete(dpid, flowModList);
+    }
+
+    public synchronized void delete(long dpid, List<OFFlowMod> flowMods) {
+        ensureCacheForSwitch(dpid);
+
+        //Remove the flow mods from the cache first before we alter them
+        flowCache.get(dpid).removeAll(flowMods);
+
+        //Alter the original flow mods to make them delete flow mods
+        for (OFFlowMod fm : flowMods) {
+            fm.setCommand(OFFlowMod.OFPFC_DELETE_STRICT)
+                    .setOutPort(OFPort.OFPP_NONE)
+                    .setLengthU(OFFlowMod.MINIMUM_LENGTH);
+
+            fm.getActions().clear();
+        }
+
+        IOFSwitch sw = floodlightProvider.getSwitches().get(dpid);
+        if (sw == null) {
+            log.debug("Switch not found when writing flow mods");
+            return;
+        }
+
+        List<OFMessage> msgList = new ArrayList<OFMessage>(flowMods.size());
+        msgList.addAll(flowMods);
+
+        try {
+            sw.write(msgList, null);
+        } catch (IOException e) {
+            log.error("Error writing to switch", e);
+        }
+    }
+
+    //TODO can the Prontos handle being sent all flow mods in one message?
+    public synchronized void switchConnected(IOFSwitch sw) {
+        log.debug("Switch connected: {}", sw);
+
+        ensureCacheForSwitch(sw.getId());
+
+        List<OFFlowMod> flowMods = flowCache.get(sw.getId());
+
+        Collections.sort(flowMods, cookieComparator);
+
+        sw.clearAllFlowMods();
+
+        List<OFMessage> messages = new ArrayList<OFMessage>(flowMods.size());
+        messages.addAll(flowMods);
+
+        try {
+            sw.write(messages, null);
+        } catch (IOException e) {
+            log.error("Failure writing flow mods to switch {}",
+                    HexString.toHexString(sw.getId()));
+        }
+    }
+
+    private void ensureCacheForSwitch(long dpid) {
+        if (!flowCache.containsKey(dpid)) {
+            flowCache.put(dpid, new ArrayList<OFFlowMod>());
+        }
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/IBgpRouteService.java b/src/main/java/net/onrc/onos/apps/bgproute/IBgpRouteService.java
index 56d5393..95b81bf 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/IBgpRouteService.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/IBgpRouteService.java
@@ -4,24 +4,25 @@
 
 public interface IBgpRouteService extends IFloodlightService {
 
-	//public RibEntry lookupRib(byte[] dest);
+    //public RibEntry lookupRib(byte[] dest);
 
-	//public Ptree getPtree();
-	public IPatriciaTrie<RibEntry> getPtree();
+    //public Ptree getPtree();
+    public IPatriciaTrie<RibEntry> getPtree();
 
-	public String getBGPdRestIp();
+    public String getBGPdRestIp();
 
-	public String getRouterId();
+    public String getRouterId();
 
-	public void clearPtree();
-	
-	/**
-	 * Pass a RIB update to the {@link IBgpRouteService}
-	 * @param update
-	 */
-	public void newRibUpdate(RibUpdate update);
-	
-	//TODO This functionality should be provided by some sort of Ptree listener framework
-	//public void prefixAdded(PtreeNode node);
-	//public void prefixDeleted(PtreeNode node);
+    public void clearPtree();
+
+    /**
+     * Pass a RIB update to the {@link IBgpRouteService}
+     *
+     * @param update
+     */
+    public void newRibUpdate(RibUpdate update);
+
+    //TODO This functionality should be provided by some sort of Ptree listener framework
+    //public void prefixAdded(PtreeNode node);
+    //public void prefixDeleted(PtreeNode node);
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/IPatriciaTrie.java b/src/main/java/net/onrc/onos/apps/bgproute/IPatriciaTrie.java
index 854b340..bd4508a 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/IPatriciaTrie.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/IPatriciaTrie.java
@@ -3,18 +3,19 @@
 import java.util.Iterator;
 
 public interface IPatriciaTrie<V> {
-	public V put(Prefix prefix, V value);
-	
-	public V lookup(Prefix prefix);
-	
-	public V match(Prefix prefix);
-	
-	public boolean remove(Prefix prefix, V value);
-	
-	public Iterator<Entry<V>> iterator();
-	
-	interface Entry<V> {
-		public Prefix getPrefix();
-		public V getValue();
-	}
+    public V put(Prefix prefix, V value);
+
+    public V lookup(Prefix prefix);
+
+    public V match(Prefix prefix);
+
+    public boolean remove(Prefix prefix, V value);
+
+    public Iterator<Entry<V>> iterator();
+
+    interface Entry<V> {
+        public Prefix getPrefix();
+
+        public V getValue();
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/Interface.java b/src/main/java/net/onrc/onos/apps/bgproute/Interface.java
index b5c762d..52e9a32 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/Interface.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/Interface.java
@@ -13,75 +13,75 @@
 import com.google.common.net.InetAddresses;
 
 public class Interface {
-	private final String name;
-	private final long dpid;
-	private final short port;
-	private final InetAddress ipAddress;
-	private final int prefixLength;
-	
-	@JsonCreator
-	public Interface (@JsonProperty("name") String name,
-					  @JsonProperty("dpid") String dpid,
-					  @JsonProperty("port") short port,
-					  @JsonProperty("ipAddress") String ipAddress,
-					  @JsonProperty("prefixLength") int prefixLength) {
-		this.name = name;
-		this.dpid = HexString.toLong(dpid);
-		this.port = port;
-		this.ipAddress = InetAddresses.forString(ipAddress);
-		this.prefixLength = prefixLength;
-	}
-	
-	public String getName() {
-		return name;
-	}
+    private final String name;
+    private final long dpid;
+    private final short port;
+    private final InetAddress ipAddress;
+    private final int prefixLength;
 
-	public SwitchPort getSwitchPort() {
-		//TODO SwitchPort, Dpid and Port are mutable, but they could probably
-		//be made immutable which would prevent the need to copy
-		return new SwitchPort(new Dpid(dpid), new Port(port));
-	}
-	
-	public long getDpid() {
-		return dpid;
-	}
+    @JsonCreator
+    public Interface(@JsonProperty("name") String name,
+                     @JsonProperty("dpid") String dpid,
+                     @JsonProperty("port") short port,
+                     @JsonProperty("ipAddress") String ipAddress,
+                     @JsonProperty("prefixLength") int prefixLength) {
+        this.name = name;
+        this.dpid = HexString.toLong(dpid);
+        this.port = port;
+        this.ipAddress = InetAddresses.forString(ipAddress);
+        this.prefixLength = prefixLength;
+    }
 
-	public short getPort() {
-		return port;
-	}
+    public String getName() {
+        return name;
+    }
 
-	public InetAddress getIpAddress() {
-		return ipAddress;
-	}
+    public SwitchPort getSwitchPort() {
+        //TODO SwitchPort, Dpid and Port are mutable, but they could probably
+        //be made immutable which would prevent the need to copy
+        return new SwitchPort(new Dpid(dpid), new Port(port));
+    }
 
-	public int getPrefixLength() {
-		return prefixLength;
-	}
-	
-	@Override
-	public boolean equals(Object other) {
-		if (other == null || !(other instanceof Interface)) {
-			return false;
-		}
-		
-		Interface otherInterface = (Interface)other;
-		
-		//Don't check switchPort as it's comprised of dpid and port
-		return (name.equals(otherInterface.name)) &&
-				(dpid == otherInterface.dpid) &&
-				(port == otherInterface.port) &&
-				(ipAddress.equals(otherInterface.ipAddress)) &&
-				(prefixLength == otherInterface.prefixLength);
-	}
-	
-	@Override
-	public int hashCode() {
-		int hash = 17;
-		hash = 31 * hash + name.hashCode();
-		hash = 31 * hash + (int)(dpid ^ dpid >>> 32);
-		hash = 31 * hash + (int)port;
-		hash = 31 * hash + ipAddress.hashCode();
-		hash = 31 * hash + prefixLength;
-		return hash;
-	}
+    public long getDpid() {
+        return dpid;
+    }
+
+    public short getPort() {
+        return port;
+    }
+
+    public InetAddress getIpAddress() {
+        return ipAddress;
+    }
+
+    public int getPrefixLength() {
+        return prefixLength;
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other == null || !(other instanceof Interface)) {
+            return false;
+        }
+
+        Interface otherInterface = (Interface) other;
+
+        //Don't check switchPort as it's comprised of dpid and port
+        return (name.equals(otherInterface.name)) &&
+                (dpid == otherInterface.dpid) &&
+                (port == otherInterface.port) &&
+                (ipAddress.equals(otherInterface.ipAddress)) &&
+                (prefixLength == otherInterface.prefixLength);
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 17;
+        hash = 31 * hash + name.hashCode();
+        hash = 31 * hash + (int) (dpid ^ dpid >>> 32);
+        hash = 31 * hash + (int) port;
+        hash = 31 * hash + ipAddress.hashCode();
+        hash = 31 * hash + prefixLength;
+        return hash;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/Path.java b/src/main/java/net/onrc/onos/apps/bgproute/Path.java
index cd0b1b6..3ecf7c7 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/Path.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/Path.java
@@ -11,51 +11,51 @@
 
 public class Path {
 
-	private Interface dstInterface;
-	private InetAddress dstIpAddress;
-	private int numUsers = 0;
-	
-	private List<PushedFlowMod> flowMods = null;
-	private boolean permanent = false;
-	
-	public Path(Interface dstInterface, InetAddress dstIpAddress) {
-		this.dstInterface = dstInterface;
-		this.dstIpAddress = dstIpAddress;
-	}
+    private Interface dstInterface;
+    private InetAddress dstIpAddress;
+    private int numUsers = 0;
 
-	public Interface getDstInterface() {
-		return dstInterface;
-	}
+    private List<PushedFlowMod> flowMods = null;
+    private boolean permanent = false;
 
-	public InetAddress getDstIpAddress() {
-		return dstIpAddress;
-	}
-	
-	public void incrementUsers() {
-		numUsers++;
-	}
-	
-	public void decrementUsers() {
-		numUsers--;
-	}
-	
-	public int getUsers() {
-		return numUsers;
-	}
-	
-	public List<PushedFlowMod> getFlowMods() {
-		return Collections.unmodifiableList(flowMods);
-	}
-	
-	public void setFlowMods(List<PushedFlowMod> flowMods) {
-		this.flowMods = flowMods;
-	}
-	
-	public boolean isPermanent() {
-		return permanent;
-	}
-	
-	public void setPermanent() {
-		permanent = true;
-	}
+    public Path(Interface dstInterface, InetAddress dstIpAddress) {
+        this.dstInterface = dstInterface;
+        this.dstIpAddress = dstIpAddress;
+    }
+
+    public Interface getDstInterface() {
+        return dstInterface;
+    }
+
+    public InetAddress getDstIpAddress() {
+        return dstIpAddress;
+    }
+
+    public void incrementUsers() {
+        numUsers++;
+    }
+
+    public void decrementUsers() {
+        numUsers--;
+    }
+
+    public int getUsers() {
+        return numUsers;
+    }
+
+    public List<PushedFlowMod> getFlowMods() {
+        return Collections.unmodifiableList(flowMods);
+    }
+
+    public void setFlowMods(List<PushedFlowMod> flowMods) {
+        this.flowMods = flowMods;
+    }
+
+    public boolean isPermanent() {
+        return permanent;
+    }
+
+    public void setPermanent() {
+        permanent = true;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/PatriciaTrie.java b/src/main/java/net/onrc/onos/apps/bgproute/PatriciaTrie.java
index 9badd11..8225d7d 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/PatriciaTrie.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/PatriciaTrie.java
@@ -4,503 +4,500 @@
 import java.util.NoSuchElementException;
 
 public class PatriciaTrie<V> implements IPatriciaTrie<V> {
-	private final byte maskBits[] = {(byte)0x00, (byte)0x80, (byte)0xc0, (byte)0xe0, (byte)0xf0, 
-												 (byte)0xf8, (byte)0xfc, (byte)0xfe, (byte)0xff};
-	
-	private int maxPrefixLength;
-	
-	private Node top;
+    private final byte maskBits[] = {(byte) 0x00, (byte) 0x80, (byte) 0xc0, (byte) 0xe0, (byte) 0xf0,
+            (byte) 0xf8, (byte) 0xfc, (byte) 0xfe, (byte) 0xff};
 
-	public PatriciaTrie(int maxPrefixLength) {
-		this.maxPrefixLength = maxPrefixLength;
-	}
+    private int maxPrefixLength;
 
-	@Override
-	public synchronized V put(Prefix prefix, V value) {
-		if (prefix == null || value == null) {
-			throw new NullPointerException();
-		}
-		
-		if (prefix.getPrefixLength() > maxPrefixLength) {
-			throw new IllegalArgumentException(String.format(
-					"Prefix length %d is greater than max prefix length %d", 
-					prefix.getPrefixLength(), maxPrefixLength));
-		}
-		
-		Node node = top;
-		Node match = null;
-		
-		while (node != null
-				&& node.prefix.getPrefixLength() <= prefix.getPrefixLength()
-				&& key_match(node.prefix.getAddress(), node.prefix.getPrefixLength(), prefix.getAddress(), prefix.getPrefixLength()) == true) {
-		    if (node.prefix.getPrefixLength() == prefix.getPrefixLength()) {
-		    	/*
-		    	 * Prefix is already in tree. This may be an aggregate node, in which case
-		    	 * we are inserting a new prefix, or it could be an actual node, in which 
-		    	 * case we are inserting a new nexthop for the prefix and should return
-		    	 * the old nexthop.
-		    	 */
-		    	V oldValue = node.value;
-		    	node.value = value;
-		    	return oldValue;
-			}
+    private Node top;
 
-			match = node;
-			
-			if (bit_check(prefix.getAddress(), node.prefix.getPrefixLength()) == true) {
-				node = node.right;
-			} else {
-				node = node.left;
-			}
-		}
+    public PatriciaTrie(int maxPrefixLength) {
+        this.maxPrefixLength = maxPrefixLength;
+    }
 
-		Node add = null;
-		
-		if (node == null) {
-			//add = new Node(p, r);
-			add = new Node(prefix);
-			add.value = value;
-			
-			if (match != null) {
-				node_link(match, add);
-			} else {
-				top = add;
-			}
-		} else {
-			add = node_common(node, prefix.getAddress(), prefix.getPrefixLength());
-			if (add == null) {
-				//I think this is -ENOMEM?
-				//return null;
-			}				
-			
-			if (match != null) {
-				node_link(match, add);
-			} else {
-				top = add;
-			}
-			node_link(add, node);
-			
-			if (add.prefix.getPrefixLength() != prefix.getPrefixLength()) {
-				match = add;
-				
-				//add = new Node(p, r);
-				add = new Node(prefix);
-				add.value = value;
-				node_link(match, add);
-			}
-			else {
-				add.value = value;
-			}
-		}
-		
-		//If we added a new Node, there was no previous mapping
-		return null;
-		//return addReference(add);
-	}
-	
-	/*exact match*/
-	@Override
-	public synchronized V lookup(Prefix prefix) {
-		if (prefix.getPrefixLength() > maxPrefixLength) {
-			return null;
-		}
-		
-		/*
-		Node node = top;
-		
-		while (node != null
-				&& node.prefix.getPrefixLength() <= p.getPrefixLength()
-				&& key_match(node.prefix.getAddress(), node.prefix.getPrefixLength(), p.getAddress(), p.getPrefixLength()) == true) {
-			if (node.prefix.getPrefixLength() == p.getPrefixLength()) {
-				//return addReference(node);
-				return node.rib;
-			}
-			
-			if (bit_check(p.getAddress(), node.prefix.getPrefixLength()) == true) {
-				node = node.right;
-			} else {
-				node = node.left;
-			}
-		}
-		*/
-		
-		Node node = findNode(prefix);
-		
-		return node == null ? null : node.value;
-	}
-	
-	/*closest containing prefix*/
-	@Override
-	public synchronized V match(Prefix prefix) {
-		//TODO
-		if (prefix.getPrefixLength() > maxPrefixLength) {
-			return null;
-		}
-		
-		Node closestNode = findClosestNode(prefix);
-		
-		return closestNode == null ? null : closestNode.value;
-	}
-	
-	@Override
-	public synchronized boolean remove(Prefix prefix, V value) {
-		Node child;
-		Node parent;
-		
-		if (prefix == null || value == null) {
-			return false;
-		}
-		
-		Node node = findNode(prefix);
-		
-		if (node == null || node.isAggregate() || !node.value.equals(value)) {
-			//Given <prefix, nexthop> mapping is not in the tree
-			return false;
-		}
-		
-		if (node.left != null && node.right != null) {
-			//Remove the RibEntry entry and leave this node as an aggregate node
-			//In the future, maybe we should re-evaluate what the aggregate prefix should be?
-			//It shouldn't necessarily stay the same.
-			//More complicated if the above prefix is also aggregate.
-			node.value = null;
-			return true;
-		}
-		
-		if (node.left != null) {
-			child = node.left;
-		} else {
-			child = node.right;
-		}
-		
-		parent = node.parent;
-		
-		if (child != null) {
-			child.parent = parent;
-		}
-		
-		if (parent != null) {
-			if (parent.left == node) {
-				parent.left = child;
-			} else {
-				parent.right = child;
-			}
-		} else {
-			top = child;
-		}
-		
-		/*
-		 * TODO not sure what to do here. I think this is lazily deleting aggregate nodes,
-		 * notice that it used to do nothing if it detected both children were not null earlier.
-		 * But here, what we really should do is reevaluate the aggregate prefix of the parent
-		 * node (if it is indeed an aggregate). Because at the moment, no aggregate node will ever
-		 * be removed. BUT, I don't actually think this presents a correctness problem, at
-		 * least from an external point of view.
-		 */
-		//if (parent != null && parent.refCount == 0) {
-			//node_remove(parent);
-		//}
-		
-		return true;
-	}
-	
-	@Override
-	public Iterator<Entry<V>> iterator() {
-		return new PatriciaTrieIterator(top);
-	}
-	
-	private Node findNode(Prefix prefix) {
-		Node node = top;
-		
-		while (node != null
-				&& node.prefix.getPrefixLength() <= prefix.getPrefixLength()
-				&& key_match(node.prefix.getAddress(), node.prefix.getPrefixLength(), prefix.getAddress(), prefix.getPrefixLength()) == true) {
-			if (node.prefix.getPrefixLength() == prefix.getPrefixLength()) {
-				//return addReference(node);
-				return node;
-			}
-			
-			if (bit_check(prefix.getAddress(), node.prefix.getPrefixLength()) == true) {
-				node = node.right;
-			} else {
-				node = node.left;
-			}
-		}
-		
-		return null;
-	}
-	
-	private Node findClosestNode(Prefix prefix) {
-		Node node = top;
-		Node match = null;
-		
-		while (node != null
-				&& node.prefix.getPrefixLength() <= prefix.getPrefixLength()
-				&& key_match(node.prefix.getAddress(), node.prefix.getPrefixLength(), prefix.getAddress(), prefix.getPrefixLength()) == true) {
-			if (!node.isAggregate()) {
-				match = node;
-			}
-			
-			if (bit_check(prefix.getAddress(), node.prefix.getPrefixLength()) == true) {
-				node = node.right;
-			} else {
-				node = node.left;
-			}
-		}
-		
-		return match;
-	}
-	
-	/*
-	 * Receives a 1-based bit index
-	 * Returns a 1-based byte index
-	 * eg. (0 => 1), 1 => 1, 8 => 1, 9 => 2, 17 => 3
-	 */
-	private int getByteContainingBit(int bitNumber) {
-		return Math.max((bitNumber + 7) / 8, 1);
-	}
-	
-	private boolean key_match(byte [] key1, int key1_len, byte [] key2, int key2_len) {
-		//int offset;
-		//int shift;
-		
-		if (key1_len > key2_len) {
-			return false;
-		}
-		
-		int offset = (Math.min(key1_len, key2_len)) / 8;
-		int shift = (Math.min(key1_len, key2_len)) % 8;
-		
-		if (shift != 0) {
-			if ((maskBits[shift] & (key1[offset] ^ key2[offset])) != 0) {
-				return false;
-			}
-		}
-		
-		while (offset != 0) {
-			offset--;
-			if (key1[offset] != key2[offset]) {
-				return false;
-			}
-		}
-		return true;
-	}
-	
-	private boolean bit_check(byte [] key, int key_bits) {
-		int offset = key_bits / 8;
-		int shift = 7 - (key_bits % 8);
-		int bit = key[offset] & 0xff;
+    @Override
+    public synchronized V put(Prefix prefix, V value) {
+        if (prefix == null || value == null) {
+            throw new NullPointerException();
+        }
 
-		bit >>= shift;
-		
-		if ((bit & 1) == 1) {
-			return true;
-		} else {
-			return false;
-		}
-	}
-	
-	private void node_link(Node node, Node add) {
-		boolean bit = bit_check(add.prefix.getAddress(), node.prefix.getPrefixLength());
-		
-		if (bit == true) {
-			node.right = add;
-		} else {
-			node.left = add;
-		}
-		add.parent = node;
-	}
-	
-    private Node node_common(Node node, byte [] key, int key_bits) {
-		int i;
-		int limit = Math.min(node.prefix.getPrefixLength(), key_bits) / 8;
+        if (prefix.getPrefixLength() > maxPrefixLength) {
+            throw new IllegalArgumentException(String.format(
+                    "Prefix length %d is greater than max prefix length %d",
+                    prefix.getPrefixLength(), maxPrefixLength));
+        }
 
-		for (i = 0; i < limit; i++) {
-			if (node.prefix.getAddress()[i] != key[i]) {
-				break;
-			}
-		}
-		
-		int common_len = i * 8;
-		int boundary = 0;
+        Node node = top;
+        Node match = null;
 
-		if (common_len != key_bits) {
-			byte diff = (byte)(node.prefix.getAddress()[i] ^ key[i]);
-			byte mask = (byte)0x80;
-			int shift_mask = 0;
-			
-			while (common_len < key_bits && ((mask & diff) == 0)) {
-				boundary = 1;
+        while (node != null
+                && node.prefix.getPrefixLength() <= prefix.getPrefixLength()
+                && key_match(node.prefix.getAddress(), node.prefix.getPrefixLength(), prefix.getAddress(), prefix.getPrefixLength()) == true) {
+            if (node.prefix.getPrefixLength() == prefix.getPrefixLength()) {
+                /*
+                 * Prefix is already in tree. This may be an aggregate node, in which case
+                 * we are inserting a new prefix, or it could be an actual node, in which
+                 * case we are inserting a new nexthop for the prefix and should return
+                 * the old nexthop.
+                 */
+                V oldValue = node.value;
+                node.value = value;
+                return oldValue;
+            }
 
-				shift_mask = (mask & 0xff);
-				shift_mask >>= 1;
-				mask = (byte)shift_mask;
+            match = node;
 
-				common_len++;
-			}
-		}
-		
-		//Node add = new Node(null, common_len, maxKeyOctets);
-		//if (add == null)
-			//Another -ENOMEM;
-			//return null;
-		
-		//Creating a new Prefix with a prefix length of common_len
-		//Bits are copied from node's up until the common_len'th bit
-		//RibEntry is null, because this is an aggregate prefix - it's not
-		//actually been added to the trie.
-		
-		byte[] newPrefix = new byte[getByteContainingBit(maxPrefixLength)];
-		
-		int j;
-		for (j = 0; j < i; j++)
-			newPrefix[j] = node.prefix.getAddress()[j];
+            if (bit_check(prefix.getAddress(), node.prefix.getPrefixLength()) == true) {
+                node = node.right;
+            } else {
+                node = node.left;
+            }
+        }
 
-		if (boundary != 0)
-			newPrefix[j] = (byte)(node.prefix.getAddress()[j] & maskBits[common_len % 8]);
-		
-		//return new Node(new Prefix(newPrefix, common_len), null);
-		return new Node(new Prefix(newPrefix, common_len));
-		//return add;
-	}
-	
-	private class Node {
-		public Node parent = null;
-		public Node left = null;
-		public Node right = null;
-		
-		public final Prefix prefix;
-		public V value;
-		
-		//public Node(Prefix p, RibEntry r) {
-		//	this.prefix = p;
-		//	this.rib = r;
-		//}
-		public Node(Prefix p) {
-			this.prefix = p;
-		}
-		
-		public boolean isAggregate() {
-			return value == null;
-		}
-				
-		public Entry<V> getEntry() {
-			return new PatriciaTrieEntry(prefix, value);
-		}
-	}
-	
-	private class PatriciaTrieEntry implements Entry<V> {
-		private Prefix prefix;
-		private V value;
-		
-		public PatriciaTrieEntry(Prefix prefix, V value) {
-			this.prefix = prefix;
-			this.value = value;
-		}
-		
-		@Override
-		public Prefix getPrefix() {
-			return prefix;
-		}
-		
-		@Override
-		public V getValue() {
-			return value;
-		}
-	}
-	
-	private class PatriciaTrieIterator implements Iterator<Entry<V>> {
-		
-		private Node current;
-		private boolean started = false;
-		
-		public PatriciaTrieIterator(Node start) {
-			current = start;
-			
-			//If the start is an aggregate node fast forward to find the next valid node
-			if (current != null && current.isAggregate()) {
-				current = findNext(current);
-			}
-		}
+        Node add = null;
 
-		@Override
-		public boolean hasNext() {
-			if (current == null) {
-				return false;
-			}
-			
-			if (!started) {
-				return true;
-			}
-			
-			return findNext(current) != null;
-		}
+        if (node == null) {
+            //add = new Node(p, r);
+            add = new Node(prefix);
+            add.value = value;
 
-		@Override
-		public Entry<V> next() {
-			if (current == null) {
-				throw new NoSuchElementException();
-			}
-			
-			if (!started) {
-				started = true;
-				return current.getEntry();
-			}
-			
-			current = findNext(current);
-			if (current == null) {
-				throw new NoSuchElementException();
-			}
-			
-			return current.getEntry();
-		}
+            if (match != null) {
+                node_link(match, add);
+            } else {
+                top = add;
+            }
+        } else {
+            add = node_common(node, prefix.getAddress(), prefix.getPrefixLength());
+            if (add == null) {
+                //I think this is -ENOMEM?
+                //return null;
+            }
 
-		@Override
-		public void remove() {
-			// TODO This could be implemented, if it were needed
-			throw new NoSuchElementException();
-		}
-		
-		private Node findNext(Node node) {
-			Node next = null;
-			
-			if (node.left != null) {
-				next = node.left;
-				//addReference(next);
-				//delReference(node);
-				//return next;
-			}
-			else if (node.right != null) {
-				next = node.right;
-				//addReference(next);
-				//delReference(node);
-				//return next;
-			}
-			else {
-				//Node start = node;
-				while (node.parent != null) {
-					if (node.parent.left == node && node.parent.right != null) {
-						next = node.parent.right;
-						//addReference(next);
-						//delReference(start);
-						//return next;
-						break;
-					}
-					node = node.parent;
-				}
-			}
-			
-			if (next == null) {
-				return null;
-			}
-			
-			//If the node doesn't have a value, it's not an actual node, it's an artifically
-			//inserted aggregate node. We don't want to return these to the user.
-			if (next.isAggregate()) {
-				return findNext(next);
-			}
-			
-			return next;
-		}
-	}
+            if (match != null) {
+                node_link(match, add);
+            } else {
+                top = add;
+            }
+            node_link(add, node);
+
+            if (add.prefix.getPrefixLength() != prefix.getPrefixLength()) {
+                match = add;
+
+                //add = new Node(p, r);
+                add = new Node(prefix);
+                add.value = value;
+                node_link(match, add);
+            } else {
+                add.value = value;
+            }
+        }
+
+        //If we added a new Node, there was no previous mapping
+        return null;
+        //return addReference(add);
+    }
+
+    /*exact match*/
+    @Override
+    public synchronized V lookup(Prefix prefix) {
+        if (prefix.getPrefixLength() > maxPrefixLength) {
+            return null;
+        }
+
+        /*
+        Node node = top;
+
+        while (node != null
+                && node.prefix.getPrefixLength() <= p.getPrefixLength()
+                && key_match(node.prefix.getAddress(), node.prefix.getPrefixLength(), p.getAddress(), p.getPrefixLength()) == true) {
+            if (node.prefix.getPrefixLength() == p.getPrefixLength()) {
+                //return addReference(node);
+                return node.rib;
+            }
+
+            if (bit_check(p.getAddress(), node.prefix.getPrefixLength()) == true) {
+                node = node.right;
+            } else {
+                node = node.left;
+            }
+        }
+        */
+
+        Node node = findNode(prefix);
+
+        return node == null ? null : node.value;
+    }
+
+    /*closest containing prefix*/
+    @Override
+    public synchronized V match(Prefix prefix) {
+        //TODO
+        if (prefix.getPrefixLength() > maxPrefixLength) {
+            return null;
+        }
+
+        Node closestNode = findClosestNode(prefix);
+
+        return closestNode == null ? null : closestNode.value;
+    }
+
+    @Override
+    public synchronized boolean remove(Prefix prefix, V value) {
+        Node child;
+        Node parent;
+
+        if (prefix == null || value == null) {
+            return false;
+        }
+
+        Node node = findNode(prefix);
+
+        if (node == null || node.isAggregate() || !node.value.equals(value)) {
+            //Given <prefix, nexthop> mapping is not in the tree
+            return false;
+        }
+
+        if (node.left != null && node.right != null) {
+            //Remove the RibEntry entry and leave this node as an aggregate node
+            //In the future, maybe we should re-evaluate what the aggregate prefix should be?
+            //It shouldn't necessarily stay the same.
+            //More complicated if the above prefix is also aggregate.
+            node.value = null;
+            return true;
+        }
+
+        if (node.left != null) {
+            child = node.left;
+        } else {
+            child = node.right;
+        }
+
+        parent = node.parent;
+
+        if (child != null) {
+            child.parent = parent;
+        }
+
+        if (parent != null) {
+            if (parent.left == node) {
+                parent.left = child;
+            } else {
+                parent.right = child;
+            }
+        } else {
+            top = child;
+        }
+
+        /*
+         * TODO not sure what to do here. I think this is lazily deleting aggregate nodes,
+         * notice that it used to do nothing if it detected both children were not null earlier.
+         * But here, what we really should do is reevaluate the aggregate prefix of the parent
+         * node (if it is indeed an aggregate). Because at the moment, no aggregate node will ever
+         * be removed. BUT, I don't actually think this presents a correctness problem, at
+         * least from an external point of view.
+         */
+        //if (parent != null && parent.refCount == 0) {
+        //node_remove(parent);
+        //}
+
+        return true;
+    }
+
+    @Override
+    public Iterator<Entry<V>> iterator() {
+        return new PatriciaTrieIterator(top);
+    }
+
+    private Node findNode(Prefix prefix) {
+        Node node = top;
+
+        while (node != null
+                && node.prefix.getPrefixLength() <= prefix.getPrefixLength()
+                && key_match(node.prefix.getAddress(), node.prefix.getPrefixLength(), prefix.getAddress(), prefix.getPrefixLength()) == true) {
+            if (node.prefix.getPrefixLength() == prefix.getPrefixLength()) {
+                //return addReference(node);
+                return node;
+            }
+
+            if (bit_check(prefix.getAddress(), node.prefix.getPrefixLength()) == true) {
+                node = node.right;
+            } else {
+                node = node.left;
+            }
+        }
+
+        return null;
+    }
+
+    private Node findClosestNode(Prefix prefix) {
+        Node node = top;
+        Node match = null;
+
+        while (node != null
+                && node.prefix.getPrefixLength() <= prefix.getPrefixLength()
+                && key_match(node.prefix.getAddress(), node.prefix.getPrefixLength(), prefix.getAddress(), prefix.getPrefixLength()) == true) {
+            if (!node.isAggregate()) {
+                match = node;
+            }
+
+            if (bit_check(prefix.getAddress(), node.prefix.getPrefixLength()) == true) {
+                node = node.right;
+            } else {
+                node = node.left;
+            }
+        }
+
+        return match;
+    }
+
+    /*
+     * Receives a 1-based bit index
+     * Returns a 1-based byte index
+     * eg. (0 => 1), 1 => 1, 8 => 1, 9 => 2, 17 => 3
+     */
+    private int getByteContainingBit(int bitNumber) {
+        return Math.max((bitNumber + 7) / 8, 1);
+    }
+
+    private boolean key_match(byte[] key1, int key1_len, byte[] key2, int key2_len) {
+        //int offset;
+        //int shift;
+
+        if (key1_len > key2_len) {
+            return false;
+        }
+
+        int offset = (Math.min(key1_len, key2_len)) / 8;
+        int shift = (Math.min(key1_len, key2_len)) % 8;
+
+        if (shift != 0) {
+            if ((maskBits[shift] & (key1[offset] ^ key2[offset])) != 0) {
+                return false;
+            }
+        }
+
+        while (offset != 0) {
+            offset--;
+            if (key1[offset] != key2[offset]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    private boolean bit_check(byte[] key, int key_bits) {
+        int offset = key_bits / 8;
+        int shift = 7 - (key_bits % 8);
+        int bit = key[offset] & 0xff;
+
+        bit >>= shift;
+
+        if ((bit & 1) == 1) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    private void node_link(Node node, Node add) {
+        boolean bit = bit_check(add.prefix.getAddress(), node.prefix.getPrefixLength());
+
+        if (bit == true) {
+            node.right = add;
+        } else {
+            node.left = add;
+        }
+        add.parent = node;
+    }
+
+    private Node node_common(Node node, byte[] key, int key_bits) {
+        int i;
+        int limit = Math.min(node.prefix.getPrefixLength(), key_bits) / 8;
+
+        for (i = 0; i < limit; i++) {
+            if (node.prefix.getAddress()[i] != key[i]) {
+                break;
+            }
+        }
+
+        int common_len = i * 8;
+        int boundary = 0;
+
+        if (common_len != key_bits) {
+            byte diff = (byte) (node.prefix.getAddress()[i] ^ key[i]);
+            byte mask = (byte) 0x80;
+            int shift_mask = 0;
+
+            while (common_len < key_bits && ((mask & diff) == 0)) {
+                boundary = 1;
+
+                shift_mask = (mask & 0xff);
+                shift_mask >>= 1;
+                mask = (byte) shift_mask;
+
+                common_len++;
+            }
+        }
+
+        //Node add = new Node(null, common_len, maxKeyOctets);
+        //if (add == null)
+        //Another -ENOMEM;
+        //return null;
+
+        //Creating a new Prefix with a prefix length of common_len
+        //Bits are copied from node's up until the common_len'th bit
+        //RibEntry is null, because this is an aggregate prefix - it's not
+        //actually been added to the trie.
+
+        byte[] newPrefix = new byte[getByteContainingBit(maxPrefixLength)];
+
+        int j;
+        for (j = 0; j < i; j++)
+            newPrefix[j] = node.prefix.getAddress()[j];
+
+        if (boundary != 0)
+            newPrefix[j] = (byte) (node.prefix.getAddress()[j] & maskBits[common_len % 8]);
+
+        //return new Node(new Prefix(newPrefix, common_len), null);
+        return new Node(new Prefix(newPrefix, common_len));
+        //return add;
+    }
+
+    private class Node {
+        public Node parent = null;
+        public Node left = null;
+        public Node right = null;
+
+        public final Prefix prefix;
+        public V value;
+
+        //public Node(Prefix p, RibEntry r) {
+        //      this.prefix = p;
+        //      this.rib = r;
+        //}
+        public Node(Prefix p) {
+            this.prefix = p;
+        }
+
+        public boolean isAggregate() {
+            return value == null;
+        }
+
+        public Entry<V> getEntry() {
+            return new PatriciaTrieEntry(prefix, value);
+        }
+    }
+
+    private class PatriciaTrieEntry implements Entry<V> {
+        private Prefix prefix;
+        private V value;
+
+        public PatriciaTrieEntry(Prefix prefix, V value) {
+            this.prefix = prefix;
+            this.value = value;
+        }
+
+        @Override
+        public Prefix getPrefix() {
+            return prefix;
+        }
+
+        @Override
+        public V getValue() {
+            return value;
+        }
+    }
+
+    private class PatriciaTrieIterator implements Iterator<Entry<V>> {
+
+        private Node current;
+        private boolean started = false;
+
+        public PatriciaTrieIterator(Node start) {
+            current = start;
+
+            //If the start is an aggregate node fast forward to find the next valid node
+            if (current != null && current.isAggregate()) {
+                current = findNext(current);
+            }
+        }
+
+        @Override
+        public boolean hasNext() {
+            if (current == null) {
+                return false;
+            }
+
+            if (!started) {
+                return true;
+            }
+
+            return findNext(current) != null;
+        }
+
+        @Override
+        public Entry<V> next() {
+            if (current == null) {
+                throw new NoSuchElementException();
+            }
+
+            if (!started) {
+                started = true;
+                return current.getEntry();
+            }
+
+            current = findNext(current);
+            if (current == null) {
+                throw new NoSuchElementException();
+            }
+
+            return current.getEntry();
+        }
+
+        @Override
+        public void remove() {
+            // TODO This could be implemented, if it were needed
+            throw new NoSuchElementException();
+        }
+
+        private Node findNext(Node node) {
+            Node next = null;
+
+            if (node.left != null) {
+                next = node.left;
+                //addReference(next);
+                //delReference(node);
+                //return next;
+            } else if (node.right != null) {
+                next = node.right;
+                //addReference(next);
+                //delReference(node);
+                //return next;
+            } else {
+                //Node start = node;
+                while (node.parent != null) {
+                    if (node.parent.left == node && node.parent.right != null) {
+                        next = node.parent.right;
+                        //addReference(next);
+                        //delReference(start);
+                        //return next;
+                        break;
+                    }
+                    node = node.parent;
+                }
+            }
+
+            if (next == null) {
+                return null;
+            }
+
+            //If the node doesn't have a value, it's not an actual node, it's an artifically
+            //inserted aggregate node. We don't want to return these to the user.
+            if (next.isAggregate()) {
+                return findNext(next);
+            }
+
+            return next;
+        }
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/Prefix.java b/src/main/java/net/onrc/onos/apps/bgproute/Prefix.java
index 8539759..5e5ba91 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/Prefix.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/Prefix.java
@@ -7,129 +7,129 @@
 import com.google.common.net.InetAddresses;
 
 public class Prefix {
-	private final int MAX_BYTES = 4;
-	
-	private final int prefixLength;
-	private final byte[] address;
-	
-	//For verifying the arguments and pretty printing
-	private final InetAddress inetAddress;
-	
-	public Prefix(byte[] addr, int prefixLength) {
-		if (addr == null || addr.length != MAX_BYTES || 
-				prefixLength < 0 || prefixLength > MAX_BYTES * Byte.SIZE) {
-			throw new IllegalArgumentException();
-		}
+    private final int MAX_BYTES = 4;
 
-		address = canonicalizeAddress(addr, prefixLength);
-		this.prefixLength = prefixLength;
-		
-		try {
-			inetAddress = InetAddress.getByAddress(address);
-		} catch (UnknownHostException e) {
-			throw new IllegalArgumentException();
-		}
-	}
+    private final int prefixLength;
+    private final byte[] address;
 
-	public Prefix(String strAddress, int prefixLength) {
-		byte[] addr = null;
-		addr = InetAddresses.forString(strAddress).getAddress();
-				
-		if (addr == null || addr.length != MAX_BYTES || 
-				prefixLength < 0 || prefixLength > MAX_BYTES * Byte.SIZE) {
-			throw new IllegalArgumentException();
-		}
-		
-		address = canonicalizeAddress(addr, prefixLength);
-		this.prefixLength = prefixLength;
-		
-		try {
-			inetAddress = InetAddress.getByAddress(address);
-		} catch (UnknownHostException e) {
-			throw new IllegalArgumentException();
-		}
-	}
-	
-	private byte[] canonicalizeAddress(byte[] address, int prefixLength) {
-		byte[] result = new byte[address.length];
-		
-		if (prefixLength == 0) {
-			for (int i = 0; i < MAX_BYTES; i++) {
-				result[i] = 0;
-			}
-			
-			return result;
-		}
-		
-		result = Arrays.copyOf(address, address.length);
-		
-		//Set all bytes after the end of the prefix to 0
-		int lastByteIndex = (prefixLength - 1) / Byte.SIZE;
-		for (int i = lastByteIndex; i < MAX_BYTES; i++) {
-			result[i] = 0;
-		}
-		
-		byte lastByte = address[lastByteIndex];
-		byte mask = 0;
-		byte msb = (byte) 0x80;
-		int lastBit = (prefixLength - 1) % Byte.SIZE;
-		for (int i = 0; i < Byte.SIZE; i++) {
-			if (i <= lastBit) {
-				mask |= (msb >> i);
-			}
-		}
+    //For verifying the arguments and pretty printing
+    private final InetAddress inetAddress;
 
-		result[lastByteIndex] = (byte) (lastByte & mask);
-		
-		return result;
-	}
+    public Prefix(byte[] addr, int prefixLength) {
+        if (addr == null || addr.length != MAX_BYTES ||
+                prefixLength < 0 || prefixLength > MAX_BYTES * Byte.SIZE) {
+            throw new IllegalArgumentException();
+        }
 
-	public int getPrefixLength() {
-		return prefixLength;
-	}
-	
-	public byte[] getAddress() {
-		return address;
-	}
-	
-	@Override
-	public boolean equals(Object other) {
-		if (other == null || !(other instanceof Prefix)) {
-			return false;
-		}
-		
-		Prefix otherPrefix = (Prefix) other;
-		
-		return (Arrays.equals(address, otherPrefix.address)) &&
-				(prefixLength == otherPrefix.prefixLength);
-	}
-	
-	@Override
-	public int hashCode() {
-		int hash = 17;
-		hash = 31 * hash + prefixLength;
-		hash = 31 * hash + Arrays.hashCode(address);
-		return hash;
-	}
-	
-	@Override
-	public String toString() {
-		return inetAddress.getHostAddress() + "/" + prefixLength;
-	}
-	
-	public String printAsBits() {
-		String result = "";
-		for (int i = 0; i < address.length; i++) {
-			byte b = address[i];
-			for (int j = 0; j < Byte.SIZE; j++) {
-				byte mask = (byte) (0x80 >>> j);
-				result += ((b & mask) == 0)? "0" : "1";
-				if (i*Byte.SIZE+j == prefixLength-1) {
-					return result;
-				}
-			}
-			result += " ";
-		}
-		return result.substring(0, result.length() - 1);
-	}
+        address = canonicalizeAddress(addr, prefixLength);
+        this.prefixLength = prefixLength;
+
+        try {
+            inetAddress = InetAddress.getByAddress(address);
+        } catch (UnknownHostException e) {
+            throw new IllegalArgumentException();
+        }
+    }
+
+    public Prefix(String strAddress, int prefixLength) {
+        byte[] addr = null;
+        addr = InetAddresses.forString(strAddress).getAddress();
+
+        if (addr == null || addr.length != MAX_BYTES ||
+                prefixLength < 0 || prefixLength > MAX_BYTES * Byte.SIZE) {
+            throw new IllegalArgumentException();
+        }
+
+        address = canonicalizeAddress(addr, prefixLength);
+        this.prefixLength = prefixLength;
+
+        try {
+            inetAddress = InetAddress.getByAddress(address);
+        } catch (UnknownHostException e) {
+            throw new IllegalArgumentException();
+        }
+    }
+
+    private byte[] canonicalizeAddress(byte[] address, int prefixLength) {
+        byte[] result = new byte[address.length];
+
+        if (prefixLength == 0) {
+            for (int i = 0; i < MAX_BYTES; i++) {
+                result[i] = 0;
+            }
+
+            return result;
+        }
+
+        result = Arrays.copyOf(address, address.length);
+
+        //Set all bytes after the end of the prefix to 0
+        int lastByteIndex = (prefixLength - 1) / Byte.SIZE;
+        for (int i = lastByteIndex; i < MAX_BYTES; i++) {
+            result[i] = 0;
+        }
+
+        byte lastByte = address[lastByteIndex];
+        byte mask = 0;
+        byte msb = (byte) 0x80;
+        int lastBit = (prefixLength - 1) % Byte.SIZE;
+        for (int i = 0; i < Byte.SIZE; i++) {
+            if (i <= lastBit) {
+                mask |= (msb >> i);
+            }
+        }
+
+        result[lastByteIndex] = (byte) (lastByte & mask);
+
+        return result;
+    }
+
+    public int getPrefixLength() {
+        return prefixLength;
+    }
+
+    public byte[] getAddress() {
+        return address;
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other == null || !(other instanceof Prefix)) {
+            return false;
+        }
+
+        Prefix otherPrefix = (Prefix) other;
+
+        return (Arrays.equals(address, otherPrefix.address)) &&
+                (prefixLength == otherPrefix.prefixLength);
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 17;
+        hash = 31 * hash + prefixLength;
+        hash = 31 * hash + Arrays.hashCode(address);
+        return hash;
+    }
+
+    @Override
+    public String toString() {
+        return inetAddress.getHostAddress() + "/" + prefixLength;
+    }
+
+    public String printAsBits() {
+        String result = "";
+        for (int i = 0; i < address.length; i++) {
+            byte b = address[i];
+            for (int j = 0; j < Byte.SIZE; j++) {
+                byte mask = (byte) (0x80 >>> j);
+                result += ((b & mask) == 0) ? "0" : "1";
+                if (i * Byte.SIZE + j == prefixLength - 1) {
+                    return result;
+                }
+            }
+            result += " ";
+        }
+        return result.substring(0, result.length() - 1);
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/Ptree.java b/src/main/java/net/onrc/onos/apps/bgproute/Ptree.java
index 682066a..9a0400f 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/Ptree.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/Ptree.java
@@ -11,312 +11,312 @@
  * we don't leak them out the the Ptree.
  */
 public class Ptree {
-	private int maxKeyBits;
-	private int maxKeyOctets;
-	//private int refCount;
-	private PtreeNode top;
-	private byte maskBits[] = { (byte)0x00, (byte)0x80, (byte)0xc0, (byte)0xe0, (byte)0xf0, (byte)0xf8, (byte)0xfc, (byte)0xfe, (byte)0xff };
-	
-	public Ptree(int max_key_bits) {
-		maxKeyBits = max_key_bits;
-		maxKeyOctets = bit_to_octet(max_key_bits); 
-		//refCount = 0;
-	}
-	
-	public synchronized PtreeNode acquire(byte [] key) {
-		return acquire(key, maxKeyBits);
-	}
-	
-	public synchronized PtreeNode acquire(byte [] key, int key_bits) {
-		if (key_bits > maxKeyBits) {
-			return null;
-		}
-		
-		PtreeNode node = top;
-		PtreeNode match = null;
-		
-		while (node != null
-				&& node.keyBits <= key_bits
-				&& key_match(node.key, node.keyBits, key, key_bits) == true) {
-		    if (node.keyBits == key_bits) {
-				return addReference(node);
-			}
+    private int maxKeyBits;
+    private int maxKeyOctets;
+    //private int refCount;
+    private PtreeNode top;
+    private byte maskBits[] = {(byte) 0x00, (byte) 0x80, (byte) 0xc0, (byte) 0xe0, (byte) 0xf0, (byte) 0xf8, (byte) 0xfc, (byte) 0xfe, (byte) 0xff};
 
-			match = node;
-			
-			if (bit_check(key, node.keyBits) == true) {
-				node = node.right;
-			} else {
-				node = node.left;
-			}
-		}
+    public Ptree(int max_key_bits) {
+        maxKeyBits = max_key_bits;
+        maxKeyOctets = bit_to_octet(max_key_bits);
+        //refCount = 0;
+    }
 
-		PtreeNode add = null;
-		
-		if (node == null) {
-			add = new PtreeNode(key, key_bits, maxKeyOctets);
-			
-			if (match != null) {
-				node_link(match, add);
-			} else {
-				top = add;
-			}
-		} else {
-			add = node_common(node, key, key_bits);
-			if (add == null) {
-				return null;
-			}				
-			
-			if (match != null) {
-				node_link(match, add);
-			} else {
-				top = add;
-			}
-			node_link(add, node);
-			
-			if (add.keyBits != key_bits) {
-				match = add;
-				
-				add = new PtreeNode(key, key_bits, maxKeyOctets);
-				node_link(match, add);
-			}
-		}
-		
-		return addReference(add);
-	}
+    public synchronized PtreeNode acquire(byte[] key) {
+        return acquire(key, maxKeyBits);
+    }
 
-	public synchronized PtreeNode lookup(byte [] key, int key_bits) {
-		if (key_bits > maxKeyBits) {
-			return null;
-		}
-		
-		PtreeNode node = top;
-		
-		while (node != null
-				&& node.keyBits <= key_bits
-				&& key_match(node.key, node.keyBits, key, key_bits) == true) {
-			if (node.keyBits == key_bits) {
-				return addReference(node);
-			}
-			
-			if (bit_check(key, node.keyBits) == true) {
-				node = node.right;
-			} else {
-				node = node.left;
-			}
-		}
-		return null;
-	}
-	
-	public synchronized PtreeNode match(byte [] key, int key_bits) {
-		if (key_bits > maxKeyBits) {
-			return null;
-		}
-		PtreeNode node = top;
-		PtreeNode matched = null;
+    public synchronized PtreeNode acquire(byte[] key, int key_bits) {
+        if (key_bits > maxKeyBits) {
+            return null;
+        }
 
-		if(node!=null)
-		
-		while (node != null
-				&& node.keyBits <= key_bits
-				&& key_match(node.key, node.keyBits, key, key_bits) == true) {
-			matched = node;
-			
-			if (bit_check(key, node.keyBits) == true) {
-				node = node.right;
-			} else {
-				node = node.left;
-			}
-		}
-		
-		if (matched != null) {
-			return addReference(matched);
-		}
-		
-		return null;
-	}
-	
-	public synchronized PtreeNode begin() {
-		if (top == null) {
-			return null;
-		}
-		return addReference(top);
-	}
-	
-	public synchronized PtreeNode next(PtreeNode node) {
-		PtreeNode next;
-		
-		if (node.left != null) {
-			next = node.left;
-			addReference(next);
-			delReference(node);
-			return next;
-		}
-		if (node.right != null) {
-			next = node.right;
-			addReference(next);
-			delReference(node);
-			return next;
-		}
-		
-		PtreeNode start = node;
-		while (node.parent != null) {
-			if (node.parent.left == node && node.parent.right != null) {
-				next = node.parent.right;
-				addReference(next);
-				delReference(start);
-				return next;
-			}
-			node = node.parent;
-		}
-		
-		delReference(start);
-		
-		return null;
-	}
+        PtreeNode node = top;
+        PtreeNode match = null;
 
-	static public int bit_to_octet(int key_bits) {
-		return Math.max((key_bits + 7) / 8, 1);
-	}
+        while (node != null
+                && node.keyBits <= key_bits
+                && key_match(node.key, node.keyBits, key, key_bits) == true) {
+            if (node.keyBits == key_bits) {
+                return addReference(node);
+            }
 
-	private PtreeNode addReference(PtreeNode node) {
-		node.refCount++;
-		return node;
-	}
-	
-	public synchronized void delReference(PtreeNode node) {
-		if (node.refCount > 0) {
-			node.refCount--;
-		}
-		if (node.refCount == 0) {
-			node_remove(node);
-		}
-	}
-	
-	private boolean key_match(byte [] key1, int key1_len, byte [] key2, int key2_len) {
-		int offset;
-		int shift;
-		
-		if (key1_len > key2_len) {
-			return false;
-		}
-		
-		offset = (Math.min(key1_len, key2_len)) / 8;
-		shift = (Math.min(key1_len, key2_len)) % 8;
-		
-		if (shift != 0) {
-			if ((maskBits[shift] & (key1[offset] ^ key2[offset])) != 0) {
-				return false;
-			}
-		}
-		
-		while (offset != 0) {
-			offset--;
-			if (key1[offset] != key2[offset]) {
-				return false;
-			}
-		}
-		return true;
-	}
-	
-	private boolean bit_check(byte [] key, int key_bits) {
-		int offset = key_bits / 8;
-		int shift = 7 - (key_bits % 8);
-		int bit = key[offset] & 0xff;
+            match = node;
 
-		bit >>= shift;
-		
-		if ((bit & 1) == 1) {
-			return true;
-		} else {
-			return false;
-		}
-	}
-	
-	private void node_link(PtreeNode node, PtreeNode add) {
-		boolean bit = bit_check(add.key, node.keyBits);
-		
-		if (bit == true) {
-			node.right = add;
-		} else {
-			node.left = add;
-		}
-		add.parent = node;
-	}
-	
-    private PtreeNode node_common(PtreeNode node, byte [] key, int key_bits) {
-		int i;
-		int limit = Math.min(node.keyBits, key_bits) / 8;
+            if (bit_check(key, node.keyBits) == true) {
+                node = node.right;
+            } else {
+                node = node.left;
+            }
+        }
 
-		for (i = 0; i < limit; i++) {
-			if (node.key[i] != key[i]) {
-				break;
-			}
-		}
-		
-		int common_len = i * 8;
-		int boundary = 0;
+        PtreeNode add = null;
 
-		if (common_len != key_bits) {
-			byte diff = (byte)(node.key[i] ^ key[i]);
-			byte mask = (byte)0x80;
-			int shift_mask = 0;
-			
-			while (common_len < key_bits && ((mask & diff) == 0)) {
-				boundary = 1;
+        if (node == null) {
+            add = new PtreeNode(key, key_bits, maxKeyOctets);
 
-				shift_mask = (mask & 0xff);
-				shift_mask >>= 1;
-				mask = (byte)shift_mask;
+            if (match != null) {
+                node_link(match, add);
+            } else {
+                top = add;
+            }
+        } else {
+            add = node_common(node, key, key_bits);
+            if (add == null) {
+                return null;
+            }
 
-				common_len++;
-			}
-		}
-		
-		PtreeNode add = new PtreeNode(null, common_len, maxKeyOctets);
-		
-		int j;
-		for (j = 0; j < i; j++)
-			add.key[j] = node.key[j];
+            if (match != null) {
+                node_link(match, add);
+            } else {
+                top = add;
+            }
+            node_link(add, node);
 
-		if (boundary != 0)
-			add.key[j] = (byte)(node.key[j] & maskBits[add.keyBits % 8]);
-		
-		return add;
-	}
-	
-	private void node_remove(PtreeNode node) {
-		PtreeNode child;
-		PtreeNode parent;
-		
-		if (node.left != null && node.right != null) {
-			return;
-		}
-		
-		if (node.left != null) {
-			child = node.left;
-		} else {
-			child = node.right;
-		}
-		
-		parent = node.parent;
-		
-		if (child != null) {
-			child.parent = parent;
-		}
-		
-		if (parent != null) {
-			if (parent.left == node) {
-				parent.left = child;
-			} else {
-				parent.right = child;
-			}
-		} else {
-			top = child;
-		}
-		
-		if (parent != null && parent.refCount == 0) {
-			node_remove(parent);
-		}
-	}
+            if (add.keyBits != key_bits) {
+                match = add;
+
+                add = new PtreeNode(key, key_bits, maxKeyOctets);
+                node_link(match, add);
+            }
+        }
+
+        return addReference(add);
+    }
+
+    public synchronized PtreeNode lookup(byte[] key, int key_bits) {
+        if (key_bits > maxKeyBits) {
+            return null;
+        }
+
+        PtreeNode node = top;
+
+        while (node != null
+                && node.keyBits <= key_bits
+                && key_match(node.key, node.keyBits, key, key_bits) == true) {
+            if (node.keyBits == key_bits) {
+                return addReference(node);
+            }
+
+            if (bit_check(key, node.keyBits) == true) {
+                node = node.right;
+            } else {
+                node = node.left;
+            }
+        }
+        return null;
+    }
+
+    public synchronized PtreeNode match(byte[] key, int key_bits) {
+        if (key_bits > maxKeyBits) {
+            return null;
+        }
+        PtreeNode node = top;
+        PtreeNode matched = null;
+
+        if (node != null)
+
+            while (node != null
+                    && node.keyBits <= key_bits
+                    && key_match(node.key, node.keyBits, key, key_bits) == true) {
+                matched = node;
+
+                if (bit_check(key, node.keyBits) == true) {
+                    node = node.right;
+                } else {
+                    node = node.left;
+                }
+            }
+
+        if (matched != null) {
+            return addReference(matched);
+        }
+
+        return null;
+    }
+
+    public synchronized PtreeNode begin() {
+        if (top == null) {
+            return null;
+        }
+        return addReference(top);
+    }
+
+    public synchronized PtreeNode next(PtreeNode node) {
+        PtreeNode next;
+
+        if (node.left != null) {
+            next = node.left;
+            addReference(next);
+            delReference(node);
+            return next;
+        }
+        if (node.right != null) {
+            next = node.right;
+            addReference(next);
+            delReference(node);
+            return next;
+        }
+
+        PtreeNode start = node;
+        while (node.parent != null) {
+            if (node.parent.left == node && node.parent.right != null) {
+                next = node.parent.right;
+                addReference(next);
+                delReference(start);
+                return next;
+            }
+            node = node.parent;
+        }
+
+        delReference(start);
+
+        return null;
+    }
+
+    static public int bit_to_octet(int key_bits) {
+        return Math.max((key_bits + 7) / 8, 1);
+    }
+
+    private PtreeNode addReference(PtreeNode node) {
+        node.refCount++;
+        return node;
+    }
+
+    public synchronized void delReference(PtreeNode node) {
+        if (node.refCount > 0) {
+            node.refCount--;
+        }
+        if (node.refCount == 0) {
+            node_remove(node);
+        }
+    }
+
+    private boolean key_match(byte[] key1, int key1_len, byte[] key2, int key2_len) {
+        int offset;
+        int shift;
+
+        if (key1_len > key2_len) {
+            return false;
+        }
+
+        offset = (Math.min(key1_len, key2_len)) / 8;
+        shift = (Math.min(key1_len, key2_len)) % 8;
+
+        if (shift != 0) {
+            if ((maskBits[shift] & (key1[offset] ^ key2[offset])) != 0) {
+                return false;
+            }
+        }
+
+        while (offset != 0) {
+            offset--;
+            if (key1[offset] != key2[offset]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    private boolean bit_check(byte[] key, int key_bits) {
+        int offset = key_bits / 8;
+        int shift = 7 - (key_bits % 8);
+        int bit = key[offset] & 0xff;
+
+        bit >>= shift;
+
+        if ((bit & 1) == 1) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    private void node_link(PtreeNode node, PtreeNode add) {
+        boolean bit = bit_check(add.key, node.keyBits);
+
+        if (bit == true) {
+            node.right = add;
+        } else {
+            node.left = add;
+        }
+        add.parent = node;
+    }
+
+    private PtreeNode node_common(PtreeNode node, byte[] key, int key_bits) {
+        int i;
+        int limit = Math.min(node.keyBits, key_bits) / 8;
+
+        for (i = 0; i < limit; i++) {
+            if (node.key[i] != key[i]) {
+                break;
+            }
+        }
+
+        int common_len = i * 8;
+        int boundary = 0;
+
+        if (common_len != key_bits) {
+            byte diff = (byte) (node.key[i] ^ key[i]);
+            byte mask = (byte) 0x80;
+            int shift_mask = 0;
+
+            while (common_len < key_bits && ((mask & diff) == 0)) {
+                boundary = 1;
+
+                shift_mask = (mask & 0xff);
+                shift_mask >>= 1;
+                mask = (byte) shift_mask;
+
+                common_len++;
+            }
+        }
+
+        PtreeNode add = new PtreeNode(null, common_len, maxKeyOctets);
+
+        int j;
+        for (j = 0; j < i; j++)
+            add.key[j] = node.key[j];
+
+        if (boundary != 0)
+            add.key[j] = (byte) (node.key[j] & maskBits[add.keyBits % 8]);
+
+        return add;
+    }
+
+    private void node_remove(PtreeNode node) {
+        PtreeNode child;
+        PtreeNode parent;
+
+        if (node.left != null && node.right != null) {
+            return;
+        }
+
+        if (node.left != null) {
+            child = node.left;
+        } else {
+            child = node.right;
+        }
+
+        parent = node.parent;
+
+        if (child != null) {
+            child.parent = parent;
+        }
+
+        if (parent != null) {
+            if (parent.left == node) {
+                parent.left = child;
+            } else {
+                parent.right = child;
+            }
+        } else {
+            top = child;
+        }
+
+        if (parent != null && parent.refCount == 0) {
+            node_remove(parent);
+        }
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/PtreeNode.java b/src/main/java/net/onrc/onos/apps/bgproute/PtreeNode.java
index d20b7c4..e1b4c55 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/PtreeNode.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/PtreeNode.java
@@ -4,41 +4,41 @@
 import org.slf4j.LoggerFactory;
 
 public class PtreeNode {
-	public PtreeNode parent;
-	public PtreeNode left;
-	public PtreeNode right;
-	
-	public byte key[];
-	public int keyBits;
-	
-	public int refCount;
-	
-	public RibEntry rib;
-	protected final static Logger log = LoggerFactory.getLogger(BgpRoute.class);
-	
-	PtreeNode(byte [] key, int key_bits, int max_key_octet) {
-		parent = null;
-		left = null;
-		right = null;
-		refCount = 0;
-		rib = null;
-		this.key = new byte[max_key_octet];
-		this.keyBits = key_bits;
-		log.debug("inside Ptreenode constructor key {} bits {}", key, key_bits);
-		
-		int octet = Ptree.bit_to_octet(key_bits);
-		for (int i = 0; i < max_key_octet; i++) {
-			if (i < octet) {
-				if (key != null) {
-				    log.debug(octet + ": filling key[{}] {}", i, key[i]);
-				    this.key[i] = key[i];
-				} else {
-				    log.debug("no filling, null key", i);
-				}
-			} else {
-			    log.debug("filling key {} as 0", i);
-				this.key[i] = 0;
-			}
-		}
-	}
+    public PtreeNode parent;
+    public PtreeNode left;
+    public PtreeNode right;
+
+    public byte key[];
+    public int keyBits;
+
+    public int refCount;
+
+    public RibEntry rib;
+    protected final static Logger log = LoggerFactory.getLogger(BgpRoute.class);
+
+    PtreeNode(byte[] key, int key_bits, int max_key_octet) {
+        parent = null;
+        left = null;
+        right = null;
+        refCount = 0;
+        rib = null;
+        this.key = new byte[max_key_octet];
+        this.keyBits = key_bits;
+        log.debug("inside Ptreenode constructor key {} bits {}", key, key_bits);
+
+        int octet = Ptree.bit_to_octet(key_bits);
+        for (int i = 0; i < max_key_octet; i++) {
+            if (i < octet) {
+                if (key != null) {
+                    log.debug(octet + ": filling key[{}] {}", i, key[i]);
+                    this.key[i] = key[i];
+                } else {
+                    log.debug("no filling, null key", i);
+                }
+            } else {
+                log.debug("filling key {} as 0", i);
+                this.key[i] = 0;
+            }
+        }
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/PushedFlowMod.java b/src/main/java/net/onrc/onos/apps/bgproute/PushedFlowMod.java
index 1908050..612a704 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/PushedFlowMod.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/PushedFlowMod.java
@@ -5,28 +5,27 @@
 /**
  * Wraps up a DPID and a OFFlowMod so we know how to delete
  * the flow if we have to.
- * 
+ * <p/>
  * TODO This functionality should be handled by ONOS's flow layer in future.
- *
  */
 public class PushedFlowMod {
-	private long dpid;
-	private OFFlowMod flowMod;
-	
-	public PushedFlowMod(long dpid, OFFlowMod flowMod) {
-		this.dpid = dpid;
-		try {
-			this.flowMod = flowMod.clone();
-		} catch (CloneNotSupportedException e) {
-			this.flowMod = flowMod;
-		}
-	}
-	
-	public long getDpid() {
-		return dpid;
-	}
-	
-	public OFFlowMod getFlowMod() {
-		return flowMod;
-	}
+    private long dpid;
+    private OFFlowMod flowMod;
+
+    public PushedFlowMod(long dpid, OFFlowMod flowMod) {
+        this.dpid = dpid;
+        try {
+            this.flowMod = flowMod.clone();
+        } catch (CloneNotSupportedException e) {
+            this.flowMod = flowMod;
+        }
+    }
+
+    public long getDpid() {
+        return dpid;
+    }
+
+    public OFFlowMod getFlowMod() {
+        return flowMod;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/RestClient.java b/src/main/java/net/onrc/onos/apps/bgproute/RestClient.java
index d085e6c..5ea4699 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/RestClient.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/RestClient.java
@@ -13,92 +13,92 @@
 
 
 public class RestClient {
-	protected final static Logger log = LoggerFactory.getLogger(RestClient.class);
+    protected final static Logger log = LoggerFactory.getLogger(RestClient.class);
 
-	public static String get(String str) {
-		StringBuilder response = new StringBuilder();
+    public static String get(String str) {
+        StringBuilder response = new StringBuilder();
 
-		try {
+        try {
 
-			URL url = new URL(str);
-			HttpURLConnection conn = (HttpURLConnection) url.openConnection();
-			conn.setConnectTimeout(2 * 1000); //2 seconds
-			conn.setRequestMethod("GET");
-			conn.setRequestProperty("Accept", "application/json");
+            URL url = new URL(str);
+            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+            conn.setConnectTimeout(2 * 1000); //2 seconds
+            conn.setRequestMethod("GET");
+            conn.setRequestProperty("Accept", "application/json");
 
-			if (conn.getResponseCode() != 200) {
-				throw new RuntimeException("Failed : HTTP error code : "
-						+ conn.getResponseCode());
-			}
+            if (conn.getResponseCode() != 200) {
+                throw new RuntimeException("Failed : HTTP error code : "
+                        + conn.getResponseCode());
+            }
 
-			if (!conn.getContentType().equals("application/json")){	
-				log.warn("The content received from {} is not json", str);
-			}		
+            if (!conn.getContentType().equals("application/json")) {
+                log.warn("The content received from {} is not json", str);
+            }
 
-			BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
-			String line;
-			while ((line = br.readLine()) != null) {
-				response.append(line);
-			}
-			
-			br.close();
-			conn.disconnect();
-			
-		} catch (MalformedURLException e) {
-			log.error("Malformed URL for GET request", e);
-		} catch (ConnectTimeoutException e) {
-			log.warn("Couldn't connect remote REST server");
-		} catch (IOException e) {
-			log.warn("Couldn't connect remote REST server");
-		}
-		
-		return response.toString();
-	}
+            BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
+            String line;
+            while ((line = br.readLine()) != null) {
+                response.append(line);
+            }
 
-	public static void post (String str) {
+            br.close();
+            conn.disconnect();
 
-		try {
-			URL url = new URL(str);
-			HttpURLConnection conn = (HttpURLConnection) url.openConnection();
-			conn.setDoOutput(true);
-			conn.setRequestMethod("POST");
-			conn.setRequestProperty("Content-Type", "application/json");		
+        } catch (MalformedURLException e) {
+            log.error("Malformed URL for GET request", e);
+        } catch (ConnectTimeoutException e) {
+            log.warn("Couldn't connect remote REST server");
+        } catch (IOException e) {
+            log.warn("Couldn't connect remote REST server");
+        }
 
-			if (conn.getResponseCode() != 200) {
-				throw new RuntimeException("Failed : HTTP error code : "
-						+ conn.getResponseCode());
-			}
+        return response.toString();
+    }
 
-			conn.disconnect();
+    public static void post(String str) {
 
-		} catch (MalformedURLException e) {
-			log.error("Malformed URL for GET request", e);
-		} catch (IOException e) {
-			log.warn("Couldn't connect remote REST server");
-		}
-	}
+        try {
+            URL url = new URL(str);
+            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+            conn.setDoOutput(true);
+            conn.setRequestMethod("POST");
+            conn.setRequestProperty("Content-Type", "application/json");
+
+            if (conn.getResponseCode() != 200) {
+                throw new RuntimeException("Failed : HTTP error code : "
+                        + conn.getResponseCode());
+            }
+
+            conn.disconnect();
+
+        } catch (MalformedURLException e) {
+            log.error("Malformed URL for GET request", e);
+        } catch (IOException e) {
+            log.warn("Couldn't connect remote REST server");
+        }
+    }
 
 
-	public static void delete (String str) {
+    public static void delete(String str) {
 
-		try {
-			URL url = new URL(str);
-			HttpURLConnection conn = (HttpURLConnection) url.openConnection();
-			conn.setRequestMethod("DELETE");
-			conn.setRequestProperty("Accept", "application/json");
+        try {
+            URL url = new URL(str);
+            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+            conn.setRequestMethod("DELETE");
+            conn.setRequestProperty("Accept", "application/json");
 
 
-			if (conn.getResponseCode() != 200) {
-				throw new RuntimeException("Failed : HTTP error code : "
-						+ conn.getResponseCode());
-			}
+            if (conn.getResponseCode() != 200) {
+                throw new RuntimeException("Failed : HTTP error code : "
+                        + conn.getResponseCode());
+            }
 
-			conn.disconnect();
+            conn.disconnect();
 
-		} catch (MalformedURLException e) {
-			log.error("Malformed URL for GET request", e);
-		} catch (IOException e) {
-			log.warn("Couldn't connect remote REST server");
-		}
-	}
+        } catch (MalformedURLException e) {
+            log.error("Malformed URL for GET request", e);
+        } catch (IOException e) {
+            log.warn("Couldn't connect remote REST server");
+        }
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/RibEntry.java b/src/main/java/net/onrc/onos/apps/bgproute/RibEntry.java
index 16f5aff..4dccd5f 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/RibEntry.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/RibEntry.java
@@ -5,76 +5,76 @@
 import com.google.common.net.InetAddresses;
 
 public class RibEntry {
-	private final InetAddress routerId;
-	private final InetAddress nextHop;
+    private final InetAddress routerId;
+    private final InetAddress nextHop;
 
-	/*
-	 * Store the sequence number information provided on the update here for
-	 * now. I think this *should* really be in the RibUpdate, and we should
-	 * store RibUpdates in the Ptrie. But, that's a bigger change to change
-	 * what the Ptrie stores.
-	 */
-	private final long sysUpTime;
-	private final long sequenceNum;
-	
-	/*
-	 * Marker for RibEntries where we don't have sequence number info.
-	 * The user of this class should make sure they don't check this data
-	 * if they don't provide it.
-	 */
-	private final static long NULL_TIME = -1;
-	
-	public RibEntry(InetAddress routerId, InetAddress nextHop) {
-		this.routerId = routerId;
-		this.nextHop = nextHop;
-		sequenceNum = NULL_TIME;
-		sysUpTime = NULL_TIME;
-	}
-	
-	public RibEntry(String routerId, String nextHop) {
-		this.routerId = InetAddresses.forString(routerId);
-		this.nextHop = InetAddresses.forString(nextHop);
-		sequenceNum = NULL_TIME;
-		sysUpTime = NULL_TIME;
-	}
-	
-	public RibEntry(String routerId, String nextHop, long sysUpTime
-			, long sequenceNum) {
-		this.routerId = InetAddresses.forString(routerId);
-		this.nextHop = InetAddresses.forString(nextHop);
-		this.sequenceNum = sequenceNum;
-		this.sysUpTime = sysUpTime;
-	}
-	
-	public InetAddress getNextHop() {
-	    return nextHop;
-	}
-	
-	public long getSysUpTime() {
-		return sysUpTime;
-	}
-	
-	public long getSequenceNum() {
-		return sequenceNum;
-	}
-	
-	@Override
-	public boolean equals(Object other) {
-		if (other == null || !(other instanceof RibEntry)) {
-			return false;
-		}
-		
-		RibEntry otherRibEntry = (RibEntry) other;
-		
-		return this.routerId.equals(otherRibEntry.routerId) 
-				&& this.nextHop.equals(otherRibEntry.nextHop);
-	}
-	
-	@Override
-	public int hashCode() {
-		int hash = 17;
-		hash = 31 * hash + routerId.hashCode();
-		hash = 31 * hash + nextHop.hashCode();
-		return hash;
-	}
+    /*
+     * Store the sequence number information provided on the update here for
+     * now. I think this *should* really be in the RibUpdate, and we should
+     * store RibUpdates in the Ptrie. But, that's a bigger change to change
+     * what the Ptrie stores.
+     */
+    private final long sysUpTime;
+    private final long sequenceNum;
+
+    /*
+     * Marker for RibEntries where we don't have sequence number info.
+     * The user of this class should make sure they don't check this data
+     * if they don't provide it.
+     */
+    private final static long NULL_TIME = -1;
+
+    public RibEntry(InetAddress routerId, InetAddress nextHop) {
+        this.routerId = routerId;
+        this.nextHop = nextHop;
+        sequenceNum = NULL_TIME;
+        sysUpTime = NULL_TIME;
+    }
+
+    public RibEntry(String routerId, String nextHop) {
+        this.routerId = InetAddresses.forString(routerId);
+        this.nextHop = InetAddresses.forString(nextHop);
+        sequenceNum = NULL_TIME;
+        sysUpTime = NULL_TIME;
+    }
+
+    public RibEntry(String routerId, String nextHop, long sysUpTime
+            , long sequenceNum) {
+        this.routerId = InetAddresses.forString(routerId);
+        this.nextHop = InetAddresses.forString(nextHop);
+        this.sequenceNum = sequenceNum;
+        this.sysUpTime = sysUpTime;
+    }
+
+    public InetAddress getNextHop() {
+        return nextHop;
+    }
+
+    public long getSysUpTime() {
+        return sysUpTime;
+    }
+
+    public long getSequenceNum() {
+        return sequenceNum;
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other == null || !(other instanceof RibEntry)) {
+            return false;
+        }
+
+        RibEntry otherRibEntry = (RibEntry) other;
+
+        return this.routerId.equals(otherRibEntry.routerId)
+                && this.nextHop.equals(otherRibEntry.nextHop);
+    }
+
+    @Override
+    public int hashCode() {
+        int hash = 17;
+        hash = 31 * hash + routerId.hashCode();
+        hash = 31 * hash + nextHop.hashCode();
+        return hash;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/bgproute/RibUpdate.java b/src/main/java/net/onrc/onos/apps/bgproute/RibUpdate.java
index d69a538..0faa94f 100644
--- a/src/main/java/net/onrc/onos/apps/bgproute/RibUpdate.java
+++ b/src/main/java/net/onrc/onos/apps/bgproute/RibUpdate.java
@@ -1,27 +1,30 @@
 package net.onrc.onos.apps.bgproute;
 
 public class RibUpdate {
-	public enum Operation {UPDATE, DELETE}; 
-	
-	private final Operation operation;
-	private final Prefix prefix;
-	private final RibEntry ribEntry;
-	
-	public RibUpdate(Operation operation, Prefix prefix, RibEntry ribEntry) {
-		this.operation = operation;
-		this.prefix = prefix;
-		this.ribEntry = ribEntry;
-	}
+    public enum Operation {
+        UPDATE,
+        DELETE
+    }
 
-	public Operation getOperation() {
-		return operation;
-	}
+    private final Operation operation;
+    private final Prefix prefix;
+    private final RibEntry ribEntry;
 
-	public Prefix getPrefix() {
-		return prefix;
-	}
+    public RibUpdate(Operation operation, Prefix prefix, RibEntry ribEntry) {
+        this.operation = operation;
+        this.prefix = prefix;
+        this.ribEntry = ribEntry;
+    }
 
-	public RibEntry getRibEntry() {
-		return ribEntry;
-	}
+    public Operation getOperation() {
+        return operation;
+    }
+
+    public Prefix getPrefix() {
+        return prefix;
+    }
+
+    public RibEntry getRibEntry() {
+        return ribEntry;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/forwarding/Forwarding.java b/src/main/java/net/onrc/onos/apps/forwarding/Forwarding.java
index bdafdcd..2ed8ba5 100644
--- a/src/main/java/net/onrc/onos/apps/forwarding/Forwarding.java
+++ b/src/main/java/net/onrc/onos/apps/forwarding/Forwarding.java
@@ -62,529 +62,526 @@
 import com.google.common.collect.ListMultimap;
 
 public class Forwarding implements IOFMessageListener, IFloodlightModule,
-									IForwardingService, IEventChannelListener<Long, IntentStateList> {
-	private final static Logger log = LoggerFactory.getLogger(Forwarding.class);
-   
-	private final int SLEEP_TIME_FOR_DB_DEVICE_INSTALLED = 100; // milliseconds
-	private final static int NUMBER_OF_THREAD_FOR_EXECUTOR = 1;
-	
-	private final static ScheduledExecutorService executor = Executors.newScheduledThreadPool(NUMBER_OF_THREAD_FOR_EXECUTOR);
-	
-	private final String callerId = "Forwarding";
-	
-	private IFloodlightProviderService floodlightProvider;
-	private IFlowPusherService flowPusher;
-	private IDatagridService datagrid;
+        IForwardingService, IEventChannelListener<Long, IntentStateList> {
+    private final static Logger log = LoggerFactory.getLogger(Forwarding.class);
 
-	private IEventChannel<Long, BroadcastPacketOutNotification> eventChannel;
-	private static final String SINGLE_PACKET_OUT_CHANNEL_NAME = "onos.forwarding.packet_out";
+    private final int SLEEP_TIME_FOR_DB_DEVICE_INSTALLED = 100; // milliseconds
+    private final static int NUMBER_OF_THREAD_FOR_EXECUTOR = 1;
 
-	private IControllerRegistryService controllerRegistryService;
-	
-	private INetworkGraphService networkGraphService;
-	private NetworkGraph networkGraph;
-	private IPathCalcRuntimeService pathRuntime;
-	private IntentMap intentMap;
-	
-	// TODO it seems there is a Guava collection that will time out entries.
-	// We should see if this will work here.
-	private Map<Path, PushedFlow> pendingFlows;
-	private ListMultimap<String, PacketToPush> waitingPackets;
-	
-	private final Object lock = new Object();
-	
-	private class PacketToPush {
-		public final OFPacketOut packet;
-		public final long dpid;
-		
-		public PacketToPush(OFPacketOut packet, long dpid) {
-			this.packet = packet;
-			this.dpid = dpid;
-		}
-	}
-	
-	private class PushedFlow {
-		public final String intentId;
-		public boolean installed = false;
-		public short firstOutPort;
-		
-		public PushedFlow(String flowId) {
-			this.intentId = flowId;
-		}
-	}
-	
-	private final class Path {
-		public final MACAddress srcMac;
-		public final MACAddress dstMac;
-		
-		public Path(MACAddress srcMac, MACAddress dstMac) {
-			this.srcMac = srcMac;
-			this.dstMac = dstMac;
-		}
-		
-		@Override
-		public boolean equals(Object other) {
-			if (!(other instanceof Path)) {
-				return false;
-			}
-			
-			Path otherPath = (Path) other;
-			return srcMac.equals(otherPath.srcMac) &&
-					dstMac.equals(otherPath.dstMac);
-		}
-		
-		@Override
-		public int hashCode() {
-			int hash = 17;
-			hash = 31 * hash + srcMac.hashCode();
-			hash = 31 * hash + dstMac.hashCode();
-			return hash;
-		}
-		
-		@Override
-		public String toString() {
-			return "(" + srcMac + ") => (" + dstMac + ")";
-		}
-	}
-	
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-		List<Class<? extends IFloodlightService>> services = 
-				new ArrayList<Class<? extends IFloodlightService>>(1);
-		services.add(IForwardingService.class);
-		return services;
-	}
+    private final static ScheduledExecutorService executor = Executors.newScheduledThreadPool(NUMBER_OF_THREAD_FOR_EXECUTOR);
 
-	@Override
-	public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
-		Map<Class<? extends IFloodlightService>, IFloodlightService> impls = 
-				new HashMap<Class<? extends IFloodlightService>, IFloodlightService>(1);
-		impls.put(IForwardingService.class, this);
-		return impls;
-	}
+    private final String callerId = "Forwarding";
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
-		List<Class<? extends IFloodlightService>> dependencies = 
-				new ArrayList<Class<? extends IFloodlightService>>();
-		dependencies.add(IFloodlightProviderService.class);
-		dependencies.add(IFlowPusherService.class);
-		dependencies.add(IControllerRegistryService.class);	
-		dependencies.add(IOnosDeviceService.class);
-		dependencies.add(IDatagridService.class);
-		dependencies.add(INetworkGraphService.class);
-		dependencies.add(IPathCalcRuntimeService.class);
-		// We don't use the IProxyArpService directly, but reactive forwarding
-		// requires it to be loaded and answering ARP requests
-		dependencies.add(IProxyArpService.class);
-		return dependencies;
-	}
-	
-	@Override
-	public void init(FloodlightModuleContext context) {
-		floodlightProvider = 
-				context.getServiceImpl(IFloodlightProviderService.class);
-		flowPusher = context.getServiceImpl(IFlowPusherService.class);
-		datagrid = context.getServiceImpl(IDatagridService.class);
-		controllerRegistryService = context.getServiceImpl(IControllerRegistryService.class);
-		networkGraphService = context.getServiceImpl(INetworkGraphService.class);
+    private IFloodlightProviderService floodlightProvider;
+    private IFlowPusherService flowPusher;
+    private IDatagridService datagrid;
+
+    private IEventChannel<Long, BroadcastPacketOutNotification> eventChannel;
+    private static final String SINGLE_PACKET_OUT_CHANNEL_NAME = "onos.forwarding.packet_out";
+
+    private IControllerRegistryService controllerRegistryService;
+
+    private INetworkGraphService networkGraphService;
+    private NetworkGraph networkGraph;
+    private IPathCalcRuntimeService pathRuntime;
+    private IntentMap intentMap;
+
+    // TODO it seems there is a Guava collection that will time out entries.
+    // We should see if this will work here.
+    private Map<Path, PushedFlow> pendingFlows;
+    private ListMultimap<String, PacketToPush> waitingPackets;
+
+    private final Object lock = new Object();
+
+    private class PacketToPush {
+        public final OFPacketOut packet;
+        public final long dpid;
+
+        public PacketToPush(OFPacketOut packet, long dpid) {
+            this.packet = packet;
+            this.dpid = dpid;
+        }
+    }
+
+    private class PushedFlow {
+        public final String intentId;
+        public boolean installed = false;
+        public short firstOutPort;
+
+        public PushedFlow(String flowId) {
+            this.intentId = flowId;
+        }
+    }
+
+    private final class Path {
+        public final MACAddress srcMac;
+        public final MACAddress dstMac;
+
+        public Path(MACAddress srcMac, MACAddress dstMac) {
+            this.srcMac = srcMac;
+            this.dstMac = dstMac;
+        }
+
+        @Override
+        public boolean equals(Object other) {
+            if (!(other instanceof Path)) {
+                return false;
+            }
+
+            Path otherPath = (Path) other;
+            return srcMac.equals(otherPath.srcMac) &&
+                    dstMac.equals(otherPath.dstMac);
+        }
+
+        @Override
+        public int hashCode() {
+            int hash = 17;
+            hash = 31 * hash + srcMac.hashCode();
+            hash = 31 * hash + dstMac.hashCode();
+            return hash;
+        }
+
+        @Override
+        public String toString() {
+            return "(" + srcMac + ") => (" + dstMac + ")";
+        }
+    }
+
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleServices() {
+        List<Class<? extends IFloodlightService>> services =
+                new ArrayList<Class<? extends IFloodlightService>>(1);
+        services.add(IForwardingService.class);
+        return services;
+    }
+
+    @Override
+    public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
+        Map<Class<? extends IFloodlightService>, IFloodlightService> impls =
+                new HashMap<Class<? extends IFloodlightService>, IFloodlightService>(1);
+        impls.put(IForwardingService.class, this);
+        return impls;
+    }
+
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
+        List<Class<? extends IFloodlightService>> dependencies =
+                new ArrayList<Class<? extends IFloodlightService>>();
+        dependencies.add(IFloodlightProviderService.class);
+        dependencies.add(IFlowPusherService.class);
+        dependencies.add(IControllerRegistryService.class);
+        dependencies.add(IOnosDeviceService.class);
+        dependencies.add(IDatagridService.class);
+        dependencies.add(INetworkGraphService.class);
+        dependencies.add(IPathCalcRuntimeService.class);
+        // We don't use the IProxyArpService directly, but reactive forwarding
+        // requires it to be loaded and answering ARP requests
+        dependencies.add(IProxyArpService.class);
+        return dependencies;
+    }
+
+    @Override
+    public void init(FloodlightModuleContext context) {
+        floodlightProvider =
+                context.getServiceImpl(IFloodlightProviderService.class);
+        flowPusher = context.getServiceImpl(IFlowPusherService.class);
+        datagrid = context.getServiceImpl(IDatagridService.class);
+        controllerRegistryService = context.getServiceImpl(IControllerRegistryService.class);
+        networkGraphService = context.getServiceImpl(INetworkGraphService.class);
         pathRuntime = context.getServiceImpl(IPathCalcRuntimeService.class);
-		
-		floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this);
 
-		pendingFlows = new HashMap<Path, PushedFlow>();
-		waitingPackets = LinkedListMultimap.create();
-	}
-	
-	@Override
-	public void startUp(FloodlightModuleContext context) {
+        floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this);
 
-		eventChannel = datagrid.createChannel(SINGLE_PACKET_OUT_CHANNEL_NAME,
-								Long.class,
-						      BroadcastPacketOutNotification.class);
-		networkGraph = networkGraphService.getNetworkGraph();
-		intentMap = pathRuntime.getPathIntents();
-		datagrid.addListener("onos.pathintent_state", this, Long.class, IntentStateList.class);
-	}
+        pendingFlows = new HashMap<Path, PushedFlow>();
+        waitingPackets = LinkedListMultimap.create();
+    }
 
-	@Override
-	public String getName() {
-		return "onosforwarding";
-	}
+    @Override
+    public void startUp(FloodlightModuleContext context) {
 
-	@Override
-	public boolean isCallbackOrderingPrereq(OFType type, String name) {
-		return (type == OFType.PACKET_IN) && 
-				(name.equals("devicemanager") || name.equals("proxyarpmanager")
-				|| name.equals("onosdevicemanager"));
-	}
+        eventChannel = datagrid.createChannel(SINGLE_PACKET_OUT_CHANNEL_NAME,
+                Long.class,
+                BroadcastPacketOutNotification.class);
+        networkGraph = networkGraphService.getNetworkGraph();
+        intentMap = pathRuntime.getPathIntents();
+        datagrid.addListener("onos.pathintent_state", this, Long.class, IntentStateList.class);
+    }
 
-	@Override
-	public boolean isCallbackOrderingPostreq(OFType type, String name) {
-		return false;
-	}
+    @Override
+    public String getName() {
+        return "onosforwarding";
+    }
 
-	@Override
-	public Command receive(
-			IOFSwitch sw, OFMessage msg, FloodlightContext cntx) {
-		
-		if (msg.getType() != OFType.PACKET_IN) {
-			return Command.CONTINUE;
-		}
-		
-		OFPacketIn pi = (OFPacketIn) msg;
-		
-		Ethernet eth = IFloodlightProviderService.bcStore.
-				get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
-		
-		log.debug("Receive PACKET_IN swId {}, portId {}", sw.getId(), pi.getInPort());
-		
-		if (eth.getEtherType() != Ethernet.TYPE_IPv4) {
-			return Command.CONTINUE;
-		}
-		
-		if (eth.isBroadcast() || eth.isMulticast()) {
-			handleBroadcast(sw, pi, eth);
-		}
-		else {
-			// Unicast
-			handlePacketIn(sw, pi, eth);
-		}
-		
-		return Command.STOP;
-	}
-	
-	private void handleBroadcast(IOFSwitch sw, OFPacketIn pi, Ethernet eth) {
-		if (log.isTraceEnabled()) {
-			log.trace("Sending broadcast packet to other ONOS instances");
-		}
+    @Override
+    public boolean isCallbackOrderingPrereq(OFType type, String name) {
+        return (type == OFType.PACKET_IN) &&
+                (name.equals("devicemanager") || name.equals("proxyarpmanager")
+                        || name.equals("onosdevicemanager"));
+    }
 
-		//We don't use address information, so 0 is put into the third argument.
-		BroadcastPacketOutNotification key =
-		    new BroadcastPacketOutNotification(
-						       eth.serialize(),
-						       0, sw.getId(),
-						       pi.getInPort());
-		eventChannel.addTransientEntry(eth.getDestinationMAC().toLong(), key);
-	}
-	
-	private void handlePacketIn(IOFSwitch sw, OFPacketIn pi, Ethernet eth){
-		log.debug("Start handlePacketIn swId {}, portId {}", sw.getId(), pi.getInPort());
+    @Override
+    public boolean isCallbackOrderingPostreq(OFType type, String name) {
+        return false;
+    }
 
-		String destinationMac = 
-				HexString.toHexString(eth.getDestinationMACAddress()); 
-		
-		//FIXME getDeviceByMac() is a blocking call, so it may be better way to handle it to avoid the condition.
-		Device deviceObject = networkGraph.getDeviceByMac(MACAddress.valueOf(destinationMac));
+    @Override
+    public Command receive(
+            IOFSwitch sw, OFMessage msg, FloodlightContext cntx) {
 
-		if (deviceObject == null) {
-			log.debug("No device entry found for {}",
-					destinationMac);
+        if (msg.getType() != OFType.PACKET_IN) {
+            return Command.CONTINUE;
+        }
 
-			//Device is not in the DB, so wait it until the device is added.
-			executor.schedule(new WaitDeviceArp(sw, pi, eth), SLEEP_TIME_FOR_DB_DEVICE_INSTALLED, TimeUnit.MILLISECONDS);
-			return;
-		}
+        OFPacketIn pi = (OFPacketIn) msg;
 
-		continueHandlePacketIn(sw, pi, eth, deviceObject);
-	}
-	
-	private class WaitDeviceArp implements Runnable {
-		IOFSwitch sw;
-		OFPacketIn pi;
-		Ethernet eth;
+        Ethernet eth = IFloodlightProviderService.bcStore.
+                get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
 
-		public WaitDeviceArp(IOFSwitch sw, OFPacketIn pi, Ethernet eth) {
-			super();
-			this.sw = sw;
-			this.pi = pi;
-			this.eth = eth;
-		}
+        log.debug("Receive PACKET_IN swId {}, portId {}", sw.getId(), pi.getInPort());
 
-		@Override
-		public void run() {
-			Device deviceObject = networkGraph.getDeviceByMac(MACAddress.valueOf(eth.getDestinationMACAddress()));
-				if(deviceObject == null){
-					log.debug("wait {}ms and device was not found. Send broadcast packet and the thread finish.", SLEEP_TIME_FOR_DB_DEVICE_INSTALLED);
-					handleBroadcast(sw, pi, eth);
-					return;
-				}
-				log.debug("wait {}ms and device {} was found, continue",SLEEP_TIME_FOR_DB_DEVICE_INSTALLED, deviceObject.getMacAddress());
-				continueHandlePacketIn(sw, pi, eth, deviceObject);
-		}
-	}
+        if (eth.getEtherType() != Ethernet.TYPE_IPv4) {
+            return Command.CONTINUE;
+        }
 
-	private void continueHandlePacketIn(IOFSwitch sw, OFPacketIn pi, Ethernet eth, Device deviceObject) {
+        if (eth.isBroadcast() || eth.isMulticast()) {
+            handleBroadcast(sw, pi, eth);
+        } else {
+            // Unicast
+            handlePacketIn(sw, pi, eth);
+        }
 
-		log.debug("Start continuehandlePacketIn");
-		
-		//Iterator<IPortObject> ports = deviceObject.getAttachedPorts().iterator();	
-		Iterator<net.onrc.onos.core.topology.Port> ports = deviceObject.getAttachmentPoints().iterator();	
-		if (!ports.hasNext()) {
-			log.debug("No attachment point found for device {} - broadcasting packet", 
-					deviceObject.getMacAddress());
-			handleBroadcast(sw, pi, eth);
-			return;	
-		}
+        return Command.STOP;
+    }
 
-		//This code assumes the device has only one port. It should be problem.
-		net.onrc.onos.core.topology.Port portObject = ports.next();
-		short destinationPort = portObject.getNumber().shortValue();
-		Switch switchObject = portObject.getSwitch();
-		long destinationDpid = switchObject.getDpid();
-		
-		// TODO SwitchPort, Dpid and Port should probably be immutable
-		SwitchPort srcSwitchPort = new SwitchPort(
-				new Dpid(sw.getId()), new Port(pi.getInPort())); 
-		SwitchPort dstSwitchPort = new SwitchPort(
-				new Dpid(destinationDpid), new Port(destinationPort)); 
-				
-		MACAddress srcMacAddress = MACAddress.valueOf(eth.getSourceMACAddress());
-		MACAddress dstMacAddress = MACAddress.valueOf(eth.getDestinationMACAddress());
-		
-		synchronized (lock) {
-			//TODO check concurrency
-			Path pathspec = new Path(srcMacAddress, dstMacAddress);	
-			PushedFlow existingFlow = pendingFlows.get(pathspec);
+    private void handleBroadcast(IOFSwitch sw, OFPacketIn pi, Ethernet eth) {
+        if (log.isTraceEnabled()) {
+            log.trace("Sending broadcast packet to other ONOS instances");
+        }
 
-			//A path is installed side by side to reduce a path timeout and a wrong state.
-			if (existingFlow != null) {
-				// We've already start to install a flow for this pair of MAC addresses
-				if(log.isDebugEnabled()) {
-					log.debug("Found existing the same pathspec {}, intent ID is {}", 
-							pathspec, 
-							existingFlow.intentId);
-				}
-				
-				OFPacketOut po = constructPacketOut(pi, sw);
-				
-				// Find the correct port here. We just assume the PI is from 
-				// the first hop switch, but this is definitely not always
-				// the case. We'll have to retrieve the flow from HZ every time
-				// because it could change (be rerouted) sometimes.
-				if (existingFlow.installed) {
-					// Flow has been sent to the switches so it is safe to
-					// send a packet out now
+        //We don't use address information, so 0 is put into the third argument.
+        BroadcastPacketOutNotification key =
+                new BroadcastPacketOutNotification(
+                        eth.serialize(),
+                        0, sw.getId(),
+                        pi.getInPort());
+        eventChannel.addTransientEntry(eth.getDestinationMAC().toLong(), key);
+    }
 
-					Intent intent = intentMap.getIntent(existingFlow.intentId);
-					PathIntent pathIntent = null;
-					if(intent instanceof PathIntent) {
-						pathIntent = (PathIntent)intent;
-					} else {
-						log.debug("Intent {} is not PathIntent. Return.", intent.getId());
-						return;
-					}
-					
-					Boolean isflowEntryForThisSwitch = false;		
-					net.onrc.onos.core.topology.Path path = pathIntent.getPath();
+    private void handlePacketIn(IOFSwitch sw, OFPacketIn pi, Ethernet eth) {
+        log.debug("Start handlePacketIn swId {}, portId {}", sw.getId(), pi.getInPort());
 
-					for(Iterator<LinkEvent> i = path.iterator(); i.hasNext();) {
-						LinkEvent le = (LinkEvent)i.next();
-						if(le.getSrc().dpid == sw.getId()) {
-							log.debug("src {} dst {}", le.getSrc(), le.getDst());
-							isflowEntryForThisSwitch = true;
-							break;
-						}
-					}
-					
-					if (isflowEntryForThisSwitch == false) {
-						// If we don't find a flow entry for that switch, then we're
-						// in the middle of a rerouting (or something's gone wrong). 
-						// This packet will be dropped as a victim of the rerouting.
-						log.debug("Dropping packet on flow {} between {}-{}",
-								existingFlow.intentId,
-								srcMacAddress, dstMacAddress);
-					} else {
-						log.debug("Sending packet out from sw {}, outport{}", sw, existingFlow.firstOutPort);
-						sendPacketOut(sw, po, existingFlow.firstOutPort);
-					}
-				}
-				else {
-					// Flow path has not yet been installed to switches so save the
-					// packet out for later
-					log.debug("Put a packet into the waitng list. flowId {}", existingFlow.intentId);
-					waitingPackets.put(existingFlow.intentId, new PacketToPush(po, sw.getId()));
-				}
-				return;
-			}
+        String destinationMac =
+                HexString.toHexString(eth.getDestinationMACAddress());
 
-			log.debug("Adding new flow between {} at {} and {} at {}",
-					new Object[]{srcMacAddress, srcSwitchPort, dstMacAddress, dstSwitchPort});
-			
-			String intentId = callerId + ":" + controllerRegistryService.getNextUniqueId();
-	        IntentOperationList operations = new IntentOperationList();
-	        ShortestPathIntent intent = new ShortestPathIntent(intentId,
-	    			sw.getId(), pi.getInPort(), srcMacAddress.toLong(),
-	    			destinationDpid, destinationPort, dstMacAddress.toLong());
-	        IntentOperation.Operator operator = IntentOperation.Operator.ADD;
-	        operations.add(operator, intent);
-	        pathRuntime.executeIntentOperations(operations);
+        //FIXME getDeviceByMac() is a blocking call, so it may be better way to handle it to avoid the condition.
+        Device deviceObject = networkGraph.getDeviceByMac(MACAddress.valueOf(destinationMac));
 
-			OFPacketOut po = constructPacketOut(pi, sw);
-			
-			// Add to waiting lists
-			pendingFlows.put(pathspec, new PushedFlow(intentId));
-			log.debug("Put a Path {} in the pending flow, intent ID {}", pathspec, intentId);
-			waitingPackets.put(intentId, new PacketToPush(po, sw.getId()));
-			log.debug("Put a Packet in the wating list. related pathspec {}", pathspec);
-			
-		}
-	}
+        if (deviceObject == null) {
+            log.debug("No device entry found for {}",
+                    destinationMac);
 
-	private OFPacketOut constructPacketOut(OFPacketIn pi, IOFSwitch sw) {	
-		OFPacketOut po = new OFPacketOut();
-		po.setInPort(OFPort.OFPP_NONE)
-		.setInPort(pi.getInPort())
-		.setActions(new ArrayList<OFAction>())
-		.setLengthU(OFPacketOut.MINIMUM_LENGTH);
-		
-		if (sw.getBuffers() == 0) {
-			po.setBufferId(OFPacketOut.BUFFER_ID_NONE)
-			.setPacketData(pi.getPacketData())
-			.setLengthU(po.getLengthU() + po.getPacketData().length);
-		}
-		else {
-			po.setBufferId(pi.getBufferId());
-		}
-		
-		return po;
-	}
+            //Device is not in the DB, so wait it until the device is added.
+            executor.schedule(new WaitDeviceArp(sw, pi, eth), SLEEP_TIME_FOR_DB_DEVICE_INSTALLED, TimeUnit.MILLISECONDS);
+            return;
+        }
 
-	@Override
-	public void flowsInstalled(Collection<FlowPath> installedFlowPaths) {
-	}
-	
-	@Override
-	public void flowRemoved(FlowPath removedFlowPath) {
-	}
-	
-	public void flowRemoved(PathIntent removedIntent) {
-		if(log.isTraceEnabled()){
-			log.trace("Path {} was removed", removedIntent.getParentIntent().getId());
-		}
+        continueHandlePacketIn(sw, pi, eth, deviceObject);
+    }
 
-		ShortestPathIntent spfIntent = (ShortestPathIntent) removedIntent.getParentIntent();
-		MACAddress srcMacAddress = MACAddress.valueOf(spfIntent.getSrcMac());
-		MACAddress dstMacAddress = MACAddress.valueOf(spfIntent.getDstMac());
-		Path removedPath = new Path(srcMacAddress, dstMacAddress);
-		
-		synchronized (lock) {
-			// There *shouldn't* be any packets queued if the flow has 
-			// just been removed. 
-			List<PacketToPush> packets = waitingPackets.removeAll(spfIntent.getId());
-			if (!packets.isEmpty()) {
-				log.warn("Removed flow {} has packets queued.",  spfIntent.getId());
-			}
-			pendingFlows.remove(removedPath);
-			log.debug("Removed from the pendingFlow: Path {}, Flow ID {}", removedPath, spfIntent.getId());
-		}
-	}
-	
-	private void flowInstalled(PathIntent installedPath) {	
-		if(log.isTraceEnabled()){
-			log.trace("Path {} was installed", installedPath.getParentIntent().getId());
-		}
-		
-		ShortestPathIntent spfIntent = (ShortestPathIntent) installedPath.getParentIntent();
-		MACAddress srcMacAddress = MACAddress.valueOf(spfIntent.getSrcMac());
-		MACAddress dstMacAddress = MACAddress.valueOf(spfIntent.getDstMac());
-		Path path = new Path(srcMacAddress, dstMacAddress);
-		log.debug("Path spec {}", path);
-		
-		// TODO waiting packets should time out. We could request a path that
-		// can't be installed right now because of a network partition. The path
-		// may eventually be installed, but we may have received thousands of 
-		// packets in the meantime and probably don't want to send very old packets.
-		
-		List<PacketToPush> packets = null;
-		net.onrc.onos.core.topology.Path graphPath = installedPath.getPath();
-		
-		log.debug("path{}", graphPath);
-		Short outPort = graphPath.get(0).getSrc().getNumber().shortValue();
-	
-		PushedFlow existingFlow = null;
-		
-		synchronized (lock) {
-			existingFlow = pendingFlows.get(path);
+    private class WaitDeviceArp implements Runnable {
+        IOFSwitch sw;
+        OFPacketIn pi;
+        Ethernet eth;
 
-			if (existingFlow != null) {
-			    existingFlow.installed = true;
-			    existingFlow.firstOutPort = outPort;
-			} else {
-				log.debug("ExistingFlow {} is null", path);
-				return;
-			}
+        public WaitDeviceArp(IOFSwitch sw, OFPacketIn pi, Ethernet eth) {
+            super();
+            this.sw = sw;
+            this.pi = pi;
+            this.eth = eth;
+        }
 
-			//Check both existing flow are installed status.
-			if(existingFlow.installed){
-				packets = waitingPackets.removeAll(existingFlow.intentId);
-				if(log.isDebugEnabled()){
-					log.debug("removed my packets {} to push from waitingPackets. outPort {} size {}",
-							existingFlow.intentId, existingFlow.firstOutPort, packets.size());
-				}
-			}else{
-				log.debug("Forward or reverse flows hasn't been pushed yet. return");	
-				return;
-			}
-		}
-		
-		for (PacketToPush packet : packets) {
-			log.debug("Start packetToPush to sw {}, outPort {}, path {}", packet.dpid, existingFlow.firstOutPort, path);
-			IOFSwitch sw = floodlightProvider.getSwitches().get(packet.dpid);
-			sendPacketOut(sw, packet.packet, existingFlow.firstOutPort);
-		}
-	}
-	
-	private void sendPacketOut(IOFSwitch sw, OFPacketOut po, short outPort) {
-		po.getActions().add(new OFActionOutput(outPort));
-		po.setActionsLength((short)
-				(po.getActionsLength() + OFActionOutput.MINIMUM_LENGTH));
-		po.setLengthU(po.getLengthU() + OFActionOutput.MINIMUM_LENGTH);
-		
-		flowPusher.add(sw, po);
-	}
+        @Override
+        public void run() {
+            Device deviceObject = networkGraph.getDeviceByMac(MACAddress.valueOf(eth.getDestinationMACAddress()));
+            if (deviceObject == null) {
+                log.debug("wait {}ms and device was not found. Send broadcast packet and the thread finish.", SLEEP_TIME_FOR_DB_DEVICE_INSTALLED);
+                handleBroadcast(sw, pi, eth);
+                return;
+            }
+            log.debug("wait {}ms and device {} was found, continue", SLEEP_TIME_FOR_DB_DEVICE_INSTALLED, deviceObject.getMacAddress());
+            continueHandlePacketIn(sw, pi, eth, deviceObject);
+        }
+    }
 
-	@Override
-	public void entryAdded(IntentStateList value) {
-		entryUpdated(value);
-		
-	}
+    private void continueHandlePacketIn(IOFSwitch sw, OFPacketIn pi, Ethernet eth, Device deviceObject) {
 
-	@Override
-	public void entryRemoved(IntentStateList value) {
-		//no-op
-	}
+        log.debug("Start continuehandlePacketIn");
 
-	@Override
-	public void entryUpdated(IntentStateList value) {
-		for (Entry<String, IntentState> entry: value.entrySet()) {
-			log.debug("path intent key {}, value {}", entry.getKey(), entry.getValue());
-			PathIntent pathIntent = (PathIntent) intentMap.getIntent(entry.getKey());
-			if (pathIntent == null)
-				continue;
-			
-			if (!(pathIntent.getParentIntent() instanceof ShortestPathIntent))
-				continue;
+        //Iterator<IPortObject> ports = deviceObject.getAttachedPorts().iterator();
+        Iterator<net.onrc.onos.core.topology.Port> ports = deviceObject.getAttachmentPoints().iterator();
+        if (!ports.hasNext()) {
+            log.debug("No attachment point found for device {} - broadcasting packet",
+                    deviceObject.getMacAddress());
+            handleBroadcast(sw, pi, eth);
+            return;
+        }
 
-			IntentState state = entry.getValue();
-			switch (state) {
-				case INST_REQ:
-					break;
-				case INST_ACK:
-					flowInstalled(pathIntent);
-					break;
-				case INST_NACK:
-					break;
-				case DEL_REQ:
-					break;
-				case DEL_ACK:
-					flowRemoved(pathIntent);
-					break;
-				case DEL_PENDING:
-					break;
-				default:
-					break;
-				}
-		}
-	}
+        //This code assumes the device has only one port. It should be problem.
+        net.onrc.onos.core.topology.Port portObject = ports.next();
+        short destinationPort = portObject.getNumber().shortValue();
+        Switch switchObject = portObject.getSwitch();
+        long destinationDpid = switchObject.getDpid();
+
+        // TODO SwitchPort, Dpid and Port should probably be immutable
+        SwitchPort srcSwitchPort = new SwitchPort(
+                new Dpid(sw.getId()), new Port(pi.getInPort()));
+        SwitchPort dstSwitchPort = new SwitchPort(
+                new Dpid(destinationDpid), new Port(destinationPort));
+
+        MACAddress srcMacAddress = MACAddress.valueOf(eth.getSourceMACAddress());
+        MACAddress dstMacAddress = MACAddress.valueOf(eth.getDestinationMACAddress());
+
+        synchronized (lock) {
+            //TODO check concurrency
+            Path pathspec = new Path(srcMacAddress, dstMacAddress);
+            PushedFlow existingFlow = pendingFlows.get(pathspec);
+
+            //A path is installed side by side to reduce a path timeout and a wrong state.
+            if (existingFlow != null) {
+                // We've already start to install a flow for this pair of MAC addresses
+                if (log.isDebugEnabled()) {
+                    log.debug("Found existing the same pathspec {}, intent ID is {}",
+                            pathspec,
+                            existingFlow.intentId);
+                }
+
+                OFPacketOut po = constructPacketOut(pi, sw);
+
+                // Find the correct port here. We just assume the PI is from
+                // the first hop switch, but this is definitely not always
+                // the case. We'll have to retrieve the flow from HZ every time
+                // because it could change (be rerouted) sometimes.
+                if (existingFlow.installed) {
+                    // Flow has been sent to the switches so it is safe to
+                    // send a packet out now
+
+                    Intent intent = intentMap.getIntent(existingFlow.intentId);
+                    PathIntent pathIntent = null;
+                    if (intent instanceof PathIntent) {
+                        pathIntent = (PathIntent) intent;
+                    } else {
+                        log.debug("Intent {} is not PathIntent. Return.", intent.getId());
+                        return;
+                    }
+
+                    Boolean isflowEntryForThisSwitch = false;
+                    net.onrc.onos.core.topology.Path path = pathIntent.getPath();
+
+                    for (Iterator<LinkEvent> i = path.iterator(); i.hasNext(); ) {
+                        LinkEvent le = (LinkEvent) i.next();
+                        if (le.getSrc().dpid == sw.getId()) {
+                            log.debug("src {} dst {}", le.getSrc(), le.getDst());
+                            isflowEntryForThisSwitch = true;
+                            break;
+                        }
+                    }
+
+                    if (isflowEntryForThisSwitch == false) {
+                        // If we don't find a flow entry for that switch, then we're
+                        // in the middle of a rerouting (or something's gone wrong).
+                        // This packet will be dropped as a victim of the rerouting.
+                        log.debug("Dropping packet on flow {} between {}-{}",
+                                existingFlow.intentId,
+                                srcMacAddress, dstMacAddress);
+                    } else {
+                        log.debug("Sending packet out from sw {}, outport{}", sw, existingFlow.firstOutPort);
+                        sendPacketOut(sw, po, existingFlow.firstOutPort);
+                    }
+                } else {
+                    // Flow path has not yet been installed to switches so save the
+                    // packet out for later
+                    log.debug("Put a packet into the waitng list. flowId {}", existingFlow.intentId);
+                    waitingPackets.put(existingFlow.intentId, new PacketToPush(po, sw.getId()));
+                }
+                return;
+            }
+
+            log.debug("Adding new flow between {} at {} and {} at {}",
+                    new Object[]{srcMacAddress, srcSwitchPort, dstMacAddress, dstSwitchPort});
+
+            String intentId = callerId + ":" + controllerRegistryService.getNextUniqueId();
+            IntentOperationList operations = new IntentOperationList();
+            ShortestPathIntent intent = new ShortestPathIntent(intentId,
+                    sw.getId(), pi.getInPort(), srcMacAddress.toLong(),
+                    destinationDpid, destinationPort, dstMacAddress.toLong());
+            IntentOperation.Operator operator = IntentOperation.Operator.ADD;
+            operations.add(operator, intent);
+            pathRuntime.executeIntentOperations(operations);
+
+            OFPacketOut po = constructPacketOut(pi, sw);
+
+            // Add to waiting lists
+            pendingFlows.put(pathspec, new PushedFlow(intentId));
+            log.debug("Put a Path {} in the pending flow, intent ID {}", pathspec, intentId);
+            waitingPackets.put(intentId, new PacketToPush(po, sw.getId()));
+            log.debug("Put a Packet in the wating list. related pathspec {}", pathspec);
+
+        }
+    }
+
+    private OFPacketOut constructPacketOut(OFPacketIn pi, IOFSwitch sw) {
+        OFPacketOut po = new OFPacketOut();
+        po.setInPort(OFPort.OFPP_NONE)
+                .setInPort(pi.getInPort())
+                .setActions(new ArrayList<OFAction>())
+                .setLengthU(OFPacketOut.MINIMUM_LENGTH);
+
+        if (sw.getBuffers() == 0) {
+            po.setBufferId(OFPacketOut.BUFFER_ID_NONE)
+                    .setPacketData(pi.getPacketData())
+                    .setLengthU(po.getLengthU() + po.getPacketData().length);
+        } else {
+            po.setBufferId(pi.getBufferId());
+        }
+
+        return po;
+    }
+
+    @Override
+    public void flowsInstalled(Collection<FlowPath> installedFlowPaths) {
+    }
+
+    @Override
+    public void flowRemoved(FlowPath removedFlowPath) {
+    }
+
+    public void flowRemoved(PathIntent removedIntent) {
+        if (log.isTraceEnabled()) {
+            log.trace("Path {} was removed", removedIntent.getParentIntent().getId());
+        }
+
+        ShortestPathIntent spfIntent = (ShortestPathIntent) removedIntent.getParentIntent();
+        MACAddress srcMacAddress = MACAddress.valueOf(spfIntent.getSrcMac());
+        MACAddress dstMacAddress = MACAddress.valueOf(spfIntent.getDstMac());
+        Path removedPath = new Path(srcMacAddress, dstMacAddress);
+
+        synchronized (lock) {
+            // There *shouldn't* be any packets queued if the flow has
+            // just been removed.
+            List<PacketToPush> packets = waitingPackets.removeAll(spfIntent.getId());
+            if (!packets.isEmpty()) {
+                log.warn("Removed flow {} has packets queued.", spfIntent.getId());
+            }
+            pendingFlows.remove(removedPath);
+            log.debug("Removed from the pendingFlow: Path {}, Flow ID {}", removedPath, spfIntent.getId());
+        }
+    }
+
+    private void flowInstalled(PathIntent installedPath) {
+        if (log.isTraceEnabled()) {
+            log.trace("Path {} was installed", installedPath.getParentIntent().getId());
+        }
+
+        ShortestPathIntent spfIntent = (ShortestPathIntent) installedPath.getParentIntent();
+        MACAddress srcMacAddress = MACAddress.valueOf(spfIntent.getSrcMac());
+        MACAddress dstMacAddress = MACAddress.valueOf(spfIntent.getDstMac());
+        Path path = new Path(srcMacAddress, dstMacAddress);
+        log.debug("Path spec {}", path);
+
+        // TODO waiting packets should time out. We could request a path that
+        // can't be installed right now because of a network partition. The path
+        // may eventually be installed, but we may have received thousands of
+        // packets in the meantime and probably don't want to send very old packets.
+
+        List<PacketToPush> packets = null;
+        net.onrc.onos.core.topology.Path graphPath = installedPath.getPath();
+
+        log.debug("path{}", graphPath);
+        Short outPort = graphPath.get(0).getSrc().getNumber().shortValue();
+
+        PushedFlow existingFlow = null;
+
+        synchronized (lock) {
+            existingFlow = pendingFlows.get(path);
+
+            if (existingFlow != null) {
+                existingFlow.installed = true;
+                existingFlow.firstOutPort = outPort;
+            } else {
+                log.debug("ExistingFlow {} is null", path);
+                return;
+            }
+
+            //Check both existing flow are installed status.
+            if (existingFlow.installed) {
+                packets = waitingPackets.removeAll(existingFlow.intentId);
+                if (log.isDebugEnabled()) {
+                    log.debug("removed my packets {} to push from waitingPackets. outPort {} size {}",
+                            existingFlow.intentId, existingFlow.firstOutPort, packets.size());
+                }
+            } else {
+                log.debug("Forward or reverse flows hasn't been pushed yet. return");
+                return;
+            }
+        }
+
+        for (PacketToPush packet : packets) {
+            log.debug("Start packetToPush to sw {}, outPort {}, path {}", packet.dpid, existingFlow.firstOutPort, path);
+            IOFSwitch sw = floodlightProvider.getSwitches().get(packet.dpid);
+            sendPacketOut(sw, packet.packet, existingFlow.firstOutPort);
+        }
+    }
+
+    private void sendPacketOut(IOFSwitch sw, OFPacketOut po, short outPort) {
+        po.getActions().add(new OFActionOutput(outPort));
+        po.setActionsLength((short)
+                (po.getActionsLength() + OFActionOutput.MINIMUM_LENGTH));
+        po.setLengthU(po.getLengthU() + OFActionOutput.MINIMUM_LENGTH);
+
+        flowPusher.add(sw, po);
+    }
+
+    @Override
+    public void entryAdded(IntentStateList value) {
+        entryUpdated(value);
+
+    }
+
+    @Override
+    public void entryRemoved(IntentStateList value) {
+        //no-op
+    }
+
+    @Override
+    public void entryUpdated(IntentStateList value) {
+        for (Entry<String, IntentState> entry : value.entrySet()) {
+            log.debug("path intent key {}, value {}", entry.getKey(), entry.getValue());
+            PathIntent pathIntent = (PathIntent) intentMap.getIntent(entry.getKey());
+            if (pathIntent == null)
+                continue;
+
+            if (!(pathIntent.getParentIntent() instanceof ShortestPathIntent))
+                continue;
+
+            IntentState state = entry.getValue();
+            switch (state) {
+                case INST_REQ:
+                    break;
+                case INST_ACK:
+                    flowInstalled(pathIntent);
+                    break;
+                case INST_NACK:
+                    break;
+                case DEL_REQ:
+                    break;
+                case DEL_ACK:
+                    flowRemoved(pathIntent);
+                    break;
+                case DEL_PENDING:
+                    break;
+                default:
+                    break;
+            }
+        }
+    }
 }
diff --git a/src/main/java/net/onrc/onos/apps/forwarding/IForwardingService.java b/src/main/java/net/onrc/onos/apps/forwarding/IForwardingService.java
index 375da88..6968999 100644
--- a/src/main/java/net/onrc/onos/apps/forwarding/IForwardingService.java
+++ b/src/main/java/net/onrc/onos/apps/forwarding/IForwardingService.java
@@ -8,26 +8,26 @@
 /**
  * Temporary interface that allows the Forwarding module to be
  * notified when a flow has been installed.
- * 
+ * <p/>
  * This should be refactored to a listener framework in the future.
- * @author jono
  *
+ * @author jono
  */
 public interface IForwardingService extends IFloodlightService {
-	/**
-	 * Notify the Forwarding module that a collection of flows has been
-	 * installed in the network.
-	 *
-	 * @param installedFlowPaths the collection of FlowPaths that have
-	 * been installed in the network.
-	 */
-	public void flowsInstalled(Collection<FlowPath> installedFlowPaths);
-	
-	/**
-	 * Notify the Forwarding module that a flow has expired and been 
-	 * removed from the network.
-	 * 
-	 * @param removedFlowPath The FlowPath that was removed
-	 */
-	public void flowRemoved(FlowPath removedFlowPath);
+    /**
+     * Notify the Forwarding module that a collection of flows has been
+     * installed in the network.
+     *
+     * @param installedFlowPaths the collection of FlowPaths that have
+     *                           been installed in the network.
+     */
+    public void flowsInstalled(Collection<FlowPath> installedFlowPaths);
+
+    /**
+     * Notify the Forwarding module that a flow has expired and been
+     * removed from the network.
+     *
+     * @param removedFlowPath The FlowPath that was removed
+     */
+    public void flowRemoved(FlowPath removedFlowPath);
 }
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/ArpCache.java b/src/main/java/net/onrc/onos/apps/proxyarp/ArpCache.java
index f2e2891..f8c1589 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/ArpCache.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/ArpCache.java
@@ -43,6 +43,7 @@
 
         /**
          * Class constructor, specifying the MAC address for the entry.
+         *
          * @param macAddress MAC address for the entry
          */
         public ArpCacheEntry(MACAddress macAddress) {
@@ -52,6 +53,7 @@
 
         /**
          * Returns the MAC address this entry represents.
+         *
          * @return this entry's MAC address
          */
         public MACAddress getMacAddress() {
@@ -60,6 +62,7 @@
 
         /**
          * Update the timestamp for this entry.
+         *
          * @param time the new timestamp to update the entry with
          */
         public void setTimeLastSeen(long time) {
@@ -68,6 +71,7 @@
 
         /**
          * Returns whether the entry has timed out or not.
+         *
          * @return true if the entry has timed out.
          */
         public boolean isExpired() {
@@ -84,6 +88,7 @@
 
     /**
      * Get the MAC address that is mapped to an IP address in the ARP cache.
+     *
      * @param ipAddress the IP address to look up
      * @return the MAC address if found in the cache, null if not
      */
@@ -110,7 +115,8 @@
      * Update an entry in the ARP cache. If the IP to MAC mapping is already
      * in the cache, its timestamp will be updated. If not, the entry will
      * be added with a new timestamp of the current time.
-     * @param ipAddress the IP address that will be mapped in the cache
+     *
+     * @param ipAddress  the IP address that will be mapped in the cache
      * @param macAddress the MAC address that maps to {@code ipAddress}
      */
     synchronized void update(InetAddress ipAddress, MACAddress macAddress) {
@@ -125,8 +131,8 @@
 
     /**
      * Retrieve a list of all mappings in the ARP cache.
-     * @return list of all ARP mappings, formatted as a human-readable string
      *
+     * @return list of all ARP mappings, formatted as a human-readable string
      */
     synchronized List<String> getMappings() {
         List<String> result = new ArrayList<String>(arpCache.size());
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/ArpCacheResource.java b/src/main/java/net/onrc/onos/apps/proxyarp/ArpCacheResource.java
index 7bf2a5a..70818c9 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/ArpCacheResource.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/ArpCacheResource.java
@@ -7,12 +7,12 @@
 
 /**
  * REST resource to view the IP to MAC mappings in the ARP cache.
- *
  */
 public class ArpCacheResource extends ServerResource {
 
     /**
      * Handler for a REST call to retrieve the ARP cache.
+     *
      * @return list of mappings formatted as a human-readable string.
      */
     @Get("json")
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/ArpReplyNotification.java b/src/main/java/net/onrc/onos/apps/proxyarp/ArpReplyNotification.java
index bde2734..9866359 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/ArpReplyNotification.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/ArpReplyNotification.java
@@ -15,20 +15,24 @@
     private int targetAddress;
     private MACAddress targetMacAddress;
 
-    protected ArpReplyNotification() {}
+    protected ArpReplyNotification() {
+    }
+
     /**
      * Class constructor.
-     * @param targetAddress IP address received from the ARP reply
+     *
+     * @param targetAddress    IP address received from the ARP reply
      * @param targetMacAddress MAC address received from the ARP reply
      */
     public ArpReplyNotification(int targetAddress,
-            MACAddress targetMacAddress) {
+                                MACAddress targetMacAddress) {
         this.targetAddress = targetAddress;
         this.targetMacAddress = targetMacAddress;
     }
 
     /**
      * Returns the IP address of the ARP reply.
+     *
      * @return the IP address
      */
     public int getTargetAddress() {
@@ -37,6 +41,7 @@
 
     /**
      * Returns the MAC address of the ARP reply.
+     *
      * @return the MAC address
      */
     public MACAddress getTargetMacAddress() {
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/BroadcastPacketOutNotification.java b/src/main/java/net/onrc/onos/apps/proxyarp/BroadcastPacketOutNotification.java
index c2097f2..5f70cf1 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/BroadcastPacketOutNotification.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/BroadcastPacketOutNotification.java
@@ -1,16 +1,15 @@
 package net.onrc.onos.apps.proxyarp;
 
 
-
 // TODO This class is too generic to be handled by ProxyArpService.
 // TODO The generic broadcast packet shouldn't contain an IP address which is
 // only for ARP packets.
+
 /**
  * Notification to all ONOS instances to broadcast this packet out the edge of
  * the network. The edge is defined as any port that doesn't have a link to
  * another switch. The one exception is the port that the packet was received
  * on.
- *
  */
 public class BroadcastPacketOutNotification extends PacketOutNotification {
 
@@ -21,32 +20,29 @@
     private final short inPort;
 
     protected BroadcastPacketOutNotification() {
-    	super();
+        super();
         this.address = -1;
         this.inSwitch = -1;
         this.inPort = -1;
     }
+
     /**
      * Class constructor.
      *
-     * @param packet
-     *        packet data to send in the packet-out
-     * @param address
-     *        target IP address if the packet is an ARP packet
-     * @param inSwitch
-     *        dpid of the switch the packet was received on
-     * @param inPort
-     *        port number of the receiving port
+     * @param packet   packet data to send in the packet-out
+     * @param address  target IP address if the packet is an ARP packet
+     * @param inSwitch dpid of the switch the packet was received on
+     * @param inPort   port number of the receiving port
      */
     public BroadcastPacketOutNotification(byte[] packet, int address,
-            long inSwitch, short inPort) {
+                                          long inSwitch, short inPort) {
         super(packet);
 
         this.address = address;
         this.inSwitch = inSwitch;
         this.inPort = inPort;
     }
-    
+
     /**
      * Get the dpid of the switch the packet was received on.
      *
@@ -69,7 +65,7 @@
      * Get the target IP address if the packet is an ARP packet.
      *
      * @return the target IP address for ARP packets, or null if the packet is
-     *         not an ARP packet
+     * not an ARP packet
      */
     public int getTargetAddress() {
         return address;
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/IArpRequester.java b/src/main/java/net/onrc/onos/apps/proxyarp/IArpRequester.java
index ddc0ab4..ec83b28 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/IArpRequester.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/IArpRequester.java
@@ -7,7 +7,6 @@
 /**
  * Callback interface for modules using the {@link IProxyArpService} to send ARP
  * requests.
- *
  */
 public interface IArpRequester {
     /**
@@ -15,10 +14,8 @@
      * it receives a reply for a request previously submitted by this
      * {@code IArpRequester}.
      *
-     * @param ipAddress
-     *        The IP address than an ARP request was sent for
-     * @param macAddress
-     *        The MAC address mapped to the requested IP address
+     * @param ipAddress  The IP address than an ARP request was sent for
+     * @param macAddress The MAC address mapped to the requested IP address
      */
     public void arpResponse(InetAddress ipAddress, MACAddress macAddress);
 }
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/IProxyArpService.java b/src/main/java/net/onrc/onos/apps/proxyarp/IProxyArpService.java
index 1cdf18c..7093d3b 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/IProxyArpService.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/IProxyArpService.java
@@ -7,6 +7,7 @@
 import net.floodlightcontroller.util.MACAddress;
 
 // Extends IFloodlightService so we can access it from REST API resources
+
 /**
  * Provides ARP services to other modules.
  */
@@ -17,7 +18,7 @@
      *
      * @param ipAddress the IP address to request the ARP mapping for
      * @return the MACAddress that maps to the specified IP address, or null if
-     *         no mapping is found
+     * no mapping is found
      */
     public MACAddress getMacAddress(InetAddress ipAddress);
 
@@ -28,10 +29,10 @@
      * @param ipAddress the IP address to send an ARP request for
      * @param requester the {@link IArpRequester} object that will be called if
      *                  a reply is received
-     * @param retry whether to keep sending requests until the MAC is learnt
+     * @param retry     whether to keep sending requests until the MAC is learnt
      */
     public void sendArpRequest(InetAddress ipAddress, IArpRequester requester,
-            boolean retry);
+                               boolean retry);
 
     /**
      * Returns a snapshot of the entire ARP cache.
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/PacketOutNotification.java b/src/main/java/net/onrc/onos/apps/proxyarp/PacketOutNotification.java
index bd64e59..c0b56a7 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/PacketOutNotification.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/PacketOutNotification.java
@@ -8,20 +8,21 @@
  * abstract base class that will be subclassed by specific types of
  * notifications.
  */
-public abstract class PacketOutNotification implements Serializable{
+public abstract class PacketOutNotification implements Serializable {
 
     private static final long serialVersionUID = 1L;
 
     protected final byte[] packet;
-    
+
     /**
      * Class constructor.
+     *
      * @param packet the packet data to send in the packet-out
      */
     public PacketOutNotification() {
-    	packet = null;
+        packet = null;
     }
-    
+
     public PacketOutNotification(byte[] packet) {
         this.packet = packet;
     }
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/ProxyArpManager.java b/src/main/java/net/onrc/onos/apps/proxyarp/ProxyArpManager.java
index f876310..805e657 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/ProxyArpManager.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/ProxyArpManager.java
@@ -55,7 +55,7 @@
 import com.google.common.collect.SetMultimap;
 
 public class ProxyArpManager implements IProxyArpService, IOFMessageListener,
-					IFloodlightModule {
+        IFloodlightModule {
     private static final Logger log = LoggerFactory
             .getLogger(ProxyArpManager.class);
 
@@ -72,16 +72,16 @@
     private static final String BROADCAST_PACKET_OUT_CHANNEL_NAME = "onos.broadcast_packet_out";
     private static final String SINGLE_PACKET_OUT_CHANNEL_NAME = "onos.single_packet_out";
     private ArpReplyEventHandler arpReplyEventHandler = new ArpReplyEventHandler();
-    private BroadcastPacketOutEventHandler broadcastPacketOutEventHandler = new BroadcastPacketOutEventHandler();  
+    private BroadcastPacketOutEventHandler broadcastPacketOutEventHandler = new BroadcastPacketOutEventHandler();
     private SinglePacketOutEventHandler singlePacketOutEventHandler = new SinglePacketOutEventHandler();
 
     private IConfigInfoService configService;
     private IRestApiService restApi;
     private IFlowPusherService flowPusher;
-    
-	private INetworkGraphService networkGraphService;
-	private NetworkGraph networkGraph;
-	private IOnosDeviceService onosDeviceService;
+
+    private INetworkGraphService networkGraphService;
+    private NetworkGraph networkGraph;
+    private IOnosDeviceService onosDeviceService;
 
     private short vlan;
     private static final short NO_VLAN = 0;
@@ -89,123 +89,123 @@
     private SetMultimap<InetAddress, ArpRequest> arpRequests;
 
     private class BroadcastPacketOutEventHandler implements
-    IEventChannelListener<Long, BroadcastPacketOutNotification> {
+            IEventChannelListener<Long, BroadcastPacketOutNotification> {
 
-		@Override
-		public void entryAdded(BroadcastPacketOutNotification value) {
-			if(log.isTraceEnabled()) {
-				log.trace("entryAdded ip{}, sw {}, port {}, packet {}", value.getTargetAddress(), value.getInSwitch(), value.getInPort(), value.packet.length);
-			}
-			BroadcastPacketOutNotification notification = (BroadcastPacketOutNotification) value;
-			broadcastArpRequestOutMyEdge(notification.packet,
-						     notification.getInSwitch(),
-						     notification.getInPort());
-		
-			// set timestamp
-			ByteBuffer buffer = ByteBuffer.allocate(4);
-			buffer.putInt(notification.getTargetAddress());
-			InetAddress addr = null;
-			try {
-				addr = InetAddress.getByAddress(buffer.array());
-			} catch (UnknownHostException e) {
-				log.error("Exception:", e);
-			}
-			
-			if (addr != null) {
-			    for (ArpRequest request : arpRequests.get(addr)) {
-			    	request.setRequestTime();
-			    }
-			}			
-		}
-		
-		@Override
-		public void entryUpdated(BroadcastPacketOutNotification value) {
-			log.debug("entryUpdated");
-		    // TODO: For now, entryUpdated() is processed as entryAdded()
-		    entryAdded(value);
-		}
-		
-		@Override
-		public void entryRemoved(BroadcastPacketOutNotification value) {
-			log.debug("entryRemoved");
-		    // TODO: Not implemented. Revisit when this module is refactored
-		}
+        @Override
+        public void entryAdded(BroadcastPacketOutNotification value) {
+            if (log.isTraceEnabled()) {
+                log.trace("entryAdded ip{}, sw {}, port {}, packet {}", value.getTargetAddress(), value.getInSwitch(), value.getInPort(), value.packet.length);
+            }
+            BroadcastPacketOutNotification notification = (BroadcastPacketOutNotification) value;
+            broadcastArpRequestOutMyEdge(notification.packet,
+                    notification.getInSwitch(),
+                    notification.getInPort());
+
+            // set timestamp
+            ByteBuffer buffer = ByteBuffer.allocate(4);
+            buffer.putInt(notification.getTargetAddress());
+            InetAddress addr = null;
+            try {
+                addr = InetAddress.getByAddress(buffer.array());
+            } catch (UnknownHostException e) {
+                log.error("Exception:", e);
+            }
+
+            if (addr != null) {
+                for (ArpRequest request : arpRequests.get(addr)) {
+                    request.setRequestTime();
+                }
+            }
+        }
+
+        @Override
+        public void entryUpdated(BroadcastPacketOutNotification value) {
+            log.debug("entryUpdated");
+            // TODO: For now, entryUpdated() is processed as entryAdded()
+            entryAdded(value);
+        }
+
+        @Override
+        public void entryRemoved(BroadcastPacketOutNotification value) {
+            log.debug("entryRemoved");
+            // TODO: Not implemented. Revisit when this module is refactored
+        }
     }
-    
+
     private class SinglePacketOutEventHandler implements
-		IEventChannelListener<Long, SinglePacketOutNotification> {
-		@Override
-		public void entryAdded(SinglePacketOutNotification packetOutNotification) {
-			log.debug("entryAdded");
-			SinglePacketOutNotification notification =
-			    (SinglePacketOutNotification) packetOutNotification;
-			sendArpRequestOutPort(notification.packet,
-					      notification.getOutSwitch(),
-					      notification.getOutPort());
-	
-			// set timestamp
-			ByteBuffer buffer = ByteBuffer.allocate(4);
-			buffer.putInt(notification.getTargetAddress());
-			InetAddress addr = null;
-			try {
-				addr = InetAddress.getByAddress(buffer.array());
-			} catch (UnknownHostException e) {
-				log.error("Exception:", e);
-			}
-			
-			if (addr != null) {
-			    for (ArpRequest request : arpRequests.get(addr)) {
-			    	request.setRequestTime();
-			    }
-			}		
-		}
-	
-		@Override
-		public void entryUpdated(SinglePacketOutNotification packetOutNotification) {
-			log.debug("entryUpdated");
-		    // TODO: For now, entryUpdated() is processed as entryAdded()
-		    entryAdded(packetOutNotification);
-		}
-	
-		@Override
-		public void entryRemoved(SinglePacketOutNotification packetOutNotification) {
-			log.debug("entryRemoved");
-		    // TODO: Not implemented. Revisit when this module is refactored
-		}
+            IEventChannelListener<Long, SinglePacketOutNotification> {
+        @Override
+        public void entryAdded(SinglePacketOutNotification packetOutNotification) {
+            log.debug("entryAdded");
+            SinglePacketOutNotification notification =
+                    (SinglePacketOutNotification) packetOutNotification;
+            sendArpRequestOutPort(notification.packet,
+                    notification.getOutSwitch(),
+                    notification.getOutPort());
+
+            // set timestamp
+            ByteBuffer buffer = ByteBuffer.allocate(4);
+            buffer.putInt(notification.getTargetAddress());
+            InetAddress addr = null;
+            try {
+                addr = InetAddress.getByAddress(buffer.array());
+            } catch (UnknownHostException e) {
+                log.error("Exception:", e);
+            }
+
+            if (addr != null) {
+                for (ArpRequest request : arpRequests.get(addr)) {
+                    request.setRequestTime();
+                }
+            }
+        }
+
+        @Override
+        public void entryUpdated(SinglePacketOutNotification packetOutNotification) {
+            log.debug("entryUpdated");
+            // TODO: For now, entryUpdated() is processed as entryAdded()
+            entryAdded(packetOutNotification);
+        }
+
+        @Override
+        public void entryRemoved(SinglePacketOutNotification packetOutNotification) {
+            log.debug("entryRemoved");
+            // TODO: Not implemented. Revisit when this module is refactored
+        }
     }
 
     private class ArpReplyEventHandler implements
-	IEventChannelListener<Long, ArpReplyNotification> {
-    	
-	@Override
-	public void entryAdded(ArpReplyNotification arpReply) {
-	    log.debug("Received ARP reply notification for ip {}, mac {}",
-	    		arpReply.getTargetAddress(), arpReply.getTargetMacAddress());
-		ByteBuffer buffer = ByteBuffer.allocate(4);
-		buffer.putInt(arpReply.getTargetAddress());
-		InetAddress addr = null;
-		try {
-			addr = InetAddress.getByAddress(buffer.array());
-		} catch (UnknownHostException e) {
-			log.error("Exception:", e);
-		}
-	   
-		if(addr != null) {
-			sendArpReplyToWaitingRequesters(addr,
-				    arpReply.getTargetMacAddress());
-		}
-	}
+            IEventChannelListener<Long, ArpReplyNotification> {
 
-	@Override
-	public void entryUpdated(ArpReplyNotification arpReply) {
-	    // TODO: For now, entryUpdated() is processed as entryAdded()
-	    entryAdded(arpReply);
-	}
+        @Override
+        public void entryAdded(ArpReplyNotification arpReply) {
+            log.debug("Received ARP reply notification for ip {}, mac {}",
+                    arpReply.getTargetAddress(), arpReply.getTargetMacAddress());
+            ByteBuffer buffer = ByteBuffer.allocate(4);
+            buffer.putInt(arpReply.getTargetAddress());
+            InetAddress addr = null;
+            try {
+                addr = InetAddress.getByAddress(buffer.array());
+            } catch (UnknownHostException e) {
+                log.error("Exception:", e);
+            }
 
-	@Override
-	public void entryRemoved(ArpReplyNotification arpReply) {
-	    // TODO: Not implemented. Revisit when this module is refactored
-	}
+            if (addr != null) {
+                sendArpReplyToWaitingRequesters(addr,
+                        arpReply.getTargetMacAddress());
+            }
+        }
+
+        @Override
+        public void entryUpdated(ArpReplyNotification arpReply) {
+            // TODO: For now, entryUpdated() is processed as entryAdded()
+            entryAdded(arpReply);
+        }
+
+        @Override
+        public void entryRemoved(ArpReplyNotification arpReply) {
+            // TODO: Not implemented. Revisit when this module is refactored
+        }
     }
 
     private static class ArpRequest {
@@ -234,7 +234,7 @@
         }
 
         public void dispatchReply(InetAddress ipAddress,
-                MACAddress replyMacAddress) {
+                                  MACAddress replyMacAddress) {
             requester.arpResponse(ipAddress, replyMacAddress);
         }
 
@@ -260,10 +260,10 @@
             ProxyArpManager.this.sendArpReply(arpRequest, dpid, port,
                     macAddress);
         }
-        
-		public ARP getArpRequest() {
-			return arpRequest;
-		}
+
+        public ARP getArpRequest() {
+            return arpRequest;
+        }
     }
 
     @Override
@@ -298,7 +298,7 @@
 
     @Override
     public void init(FloodlightModuleContext context) {
-        this.floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class); 
+        this.floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
         this.configService = context.getServiceImpl(IConfigInfoService.class);
         this.restApi = context.getServiceImpl(IRestApiService.class);
         this.datagrid = context.getServiceImpl(IDatagridService.class);
@@ -320,25 +320,25 @@
 
         restApi.addRestletRoutable(new ArpWebRoutable());
         floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this);
-		networkGraph = networkGraphService.getNetworkGraph();
-		
-	//
-	// Event notification setup: channels and event handlers
-	//	
-	broadcastPacketOutEventChannel = datagrid.addListener(BROADCAST_PACKET_OUT_CHANNEL_NAME,
-			     broadcastPacketOutEventHandler,
-			     Long.class,
-			     BroadcastPacketOutNotification.class);
-	
-	singlePacketOutEventChannel = datagrid.addListener(SINGLE_PACKET_OUT_CHANNEL_NAME,
-			     singlePacketOutEventHandler,
-			     Long.class,
-			     SinglePacketOutNotification.class);
-	
-	arpReplyEventChannel = datagrid.addListener(ARP_REPLY_CHANNEL_NAME,
-						    arpReplyEventHandler,
-						    Long.class,
-						    ArpReplyNotification.class);
+        networkGraph = networkGraphService.getNetworkGraph();
+
+        //
+        // Event notification setup: channels and event handlers
+        //
+        broadcastPacketOutEventChannel = datagrid.addListener(BROADCAST_PACKET_OUT_CHANNEL_NAME,
+                broadcastPacketOutEventHandler,
+                Long.class,
+                BroadcastPacketOutNotification.class);
+
+        singlePacketOutEventChannel = datagrid.addListener(SINGLE_PACKET_OUT_CHANNEL_NAME,
+                singlePacketOutEventHandler,
+                Long.class,
+                SinglePacketOutNotification.class);
+
+        arpReplyEventChannel = datagrid.addListener(ARP_REPLY_CHANNEL_NAME,
+                arpReplyEventHandler,
+                Long.class,
+                ArpReplyNotification.class);
 
         Timer arpTimer = new Timer("arp-processing");
         arpTimer.scheduleAtFixedRate(new TimerTask() {
@@ -373,17 +373,17 @@
                     log.debug("Cleaning expired ARP request for {}", entry
                             .getKey().getHostAddress());
 
-					// If the ARP request is expired and then delete the device
-					// TODO check whether this is OK from this thread
-					HostArpRequester requester = (HostArpRequester) request.requester;
-					ARP req = requester.getArpRequest();
-					Device targetDev = networkGraph.getDeviceByMac(MACAddress.valueOf(req.getTargetHardwareAddress()));
-					if(targetDev != null) {
-						onosDeviceService.deleteOnosDeviceByMac(MACAddress.valueOf(req.getTargetHardwareAddress()));
-						if (log.isDebugEnabled()) {
-							log.debug("RemoveDevice: {} due to no have not recieve the ARP reply", targetDev.getMacAddress());
-						}
-					}
+                    // If the ARP request is expired and then delete the device
+                    // TODO check whether this is OK from this thread
+                    HostArpRequester requester = (HostArpRequester) request.requester;
+                    ARP req = requester.getArpRequest();
+                    Device targetDev = networkGraph.getDeviceByMac(MACAddress.valueOf(req.getTargetHardwareAddress()));
+                    if (targetDev != null) {
+                        onosDeviceService.deleteOnosDeviceByMac(MACAddress.valueOf(req.getTargetHardwareAddress()));
+                        if (log.isDebugEnabled()) {
+                            log.debug("RemoveDevice: {} due to no have not recieve the ARP reply", targetDev.getMacAddress());
+                        }
+                    }
 
                     it.remove();
 
@@ -460,7 +460,7 @@
     }
 
     private void handleArpRequest(IOFSwitch sw, OFPacketIn pi, ARP arp,
-            Ethernet eth) {
+                                  Ethernet eth) {
         if (log.isTraceEnabled()) {
             log.trace("ARP request received for {}",
                     inetAddressToString(arp.getTargetProtocolAddress()));
@@ -492,86 +492,84 @@
 
         // MACAddress macAddress = arpCache.lookup(target);
 
-		arpRequests.put(target, new ArpRequest(
-				new HostArpRequester(arp, sw.getId(), pi.getInPort()), false));
-		
-		Device targetDevice = networkGraph.getDeviceByMac(MACAddress.valueOf(arp.getTargetHardwareAddress()));
+        arpRequests.put(target, new ArpRequest(
+                new HostArpRequester(arp, sw.getId(), pi.getInPort()), false));
 
-		if (targetDevice == null) {
-			if (log.isTraceEnabled()) {
-				log.trace("No device info found for {} - broadcasting",
-						target.getHostAddress());
-			}
-			
-			// We don't know the device so broadcast the request out
-			BroadcastPacketOutNotification key =
-					new BroadcastPacketOutNotification(eth.serialize(),
-							ByteBuffer.wrap(arp.getTargetProtocolAddress()).getInt(), sw.getId(), pi.getInPort());
-			log.debug("broadcastPacketOutEventChannel mac {}, ip {}, dpid {}, port {}, paket {}", eth.getSourceMAC().toLong(), 
-					ByteBuffer.wrap(arp.getTargetProtocolAddress()).getInt(), sw.getId(), pi.getInPort(), eth.serialize().length);
-			broadcastPacketOutEventChannel.addTransientEntry(eth.getDestinationMAC().toLong(), key);
-		}
-		else {
-			// Even if the device exists in our database, we do not reply to
-			// the request directly, but check whether the device is still valid
-			MACAddress macAddress = MACAddress.valueOf(arp.getTargetHardwareAddress());
+        Device targetDevice = networkGraph.getDeviceByMac(MACAddress.valueOf(arp.getTargetHardwareAddress()));
 
-			if (log.isTraceEnabled()) {
-				log.trace("The target Device Record in DB is: {} => {} from ARP request host at {}/{}",
-						new Object [] {
-						inetAddressToString(arp.getTargetProtocolAddress()),
-						macAddress,
-						HexString.toHexString(sw.getId()), pi.getInPort()});
-			}
+        if (targetDevice == null) {
+            if (log.isTraceEnabled()) {
+                log.trace("No device info found for {} - broadcasting",
+                        target.getHostAddress());
+            }
 
-			// sendArpReply(arp, sw.getId(), pi.getInPort(), macAddress);
+            // We don't know the device so broadcast the request out
+            BroadcastPacketOutNotification key =
+                    new BroadcastPacketOutNotification(eth.serialize(),
+                            ByteBuffer.wrap(arp.getTargetProtocolAddress()).getInt(), sw.getId(), pi.getInPort());
+            log.debug("broadcastPacketOutEventChannel mac {}, ip {}, dpid {}, port {}, paket {}", eth.getSourceMAC().toLong(),
+                    ByteBuffer.wrap(arp.getTargetProtocolAddress()).getInt(), sw.getId(), pi.getInPort(), eth.serialize().length);
+            broadcastPacketOutEventChannel.addTransientEntry(eth.getDestinationMAC().toLong(), key);
+        } else {
+            // Even if the device exists in our database, we do not reply to
+            // the request directly, but check whether the device is still valid
+            MACAddress macAddress = MACAddress.valueOf(arp.getTargetHardwareAddress());
 
-			Iterable<net.onrc.onos.core.topology.Port> outPorts = targetDevice.getAttachmentPoints();
+            if (log.isTraceEnabled()) {
+                log.trace("The target Device Record in DB is: {} => {} from ARP request host at {}/{}",
+                        new Object[]{
+                                inetAddressToString(arp.getTargetProtocolAddress()),
+                                macAddress,
+                                HexString.toHexString(sw.getId()), pi.getInPort()});
+            }
 
-			if (!outPorts.iterator().hasNext()){
-				if (log.isTraceEnabled()) {
-					log.trace("Device {} exists but is not connected to any ports" + 
-							" - broadcasting", macAddress);
-				}
-				
-//				BroadcastPacketOutNotification key =
-//						new BroadcastPacketOutNotification(eth.serialize(), 
-//								target, sw.getId(), pi.getInPort());
-//				broadcastPacketOutEventChannel.addTransientEntry(eth.getDestinationMAC().toLong(), key);
-			} 
-			else {
-				for (net.onrc.onos.core.topology.Port portObject : outPorts) {
-					//long outSwitch = 0;
-					//short outPort = 0;
+            // sendArpReply(arp, sw.getId(), pi.getInPort(), macAddress);
 
-					if(portObject.getOutgoingLink() != null || portObject.getIncomingLink() != null) {
-						continue;
-					}
-					
-					short outPort = portObject.getNumber().shortValue();
-					Switch outSwitchObject = portObject.getSwitch();
-					long outSwitch = outSwitchObject.getDpid();
-					
-					if (log.isTraceEnabled()) {
-						log.trace("Probing device {} on port {}/{}", 
-								new Object[] {macAddress, 
-								HexString.toHexString(outSwitch), outPort});
-					}
-					
-					SinglePacketOutNotification key =
-						    new SinglePacketOutNotification(eth.serialize(), 
-						    		ByteBuffer.wrap(target.getAddress()).getInt(), outSwitch, outPort);
-					singlePacketOutEventChannel.addTransientEntry(eth.getDestinationMAC().toLong(), key);
-				}
-			}
-		}
+            Iterable<net.onrc.onos.core.topology.Port> outPorts = targetDevice.getAttachmentPoints();
+
+            if (!outPorts.iterator().hasNext()) {
+                if (log.isTraceEnabled()) {
+                    log.trace("Device {} exists but is not connected to any ports" +
+                            " - broadcasting", macAddress);
+                }
+
+//                              BroadcastPacketOutNotification key =
+//                                              new BroadcastPacketOutNotification(eth.serialize(), 
+//                                                              target, sw.getId(), pi.getInPort());
+//                              broadcastPacketOutEventChannel.addTransientEntry(eth.getDestinationMAC().toLong(), key);
+            } else {
+                for (net.onrc.onos.core.topology.Port portObject : outPorts) {
+                    //long outSwitch = 0;
+                    //short outPort = 0;
+
+                    if (portObject.getOutgoingLink() != null || portObject.getIncomingLink() != null) {
+                        continue;
+                    }
+
+                    short outPort = portObject.getNumber().shortValue();
+                    Switch outSwitchObject = portObject.getSwitch();
+                    long outSwitch = outSwitchObject.getDpid();
+
+                    if (log.isTraceEnabled()) {
+                        log.trace("Probing device {} on port {}/{}",
+                                new Object[]{macAddress,
+                                        HexString.toHexString(outSwitch), outPort});
+                    }
+
+                    SinglePacketOutNotification key =
+                            new SinglePacketOutNotification(eth.serialize(),
+                                    ByteBuffer.wrap(target.getAddress()).getInt(), outSwitch, outPort);
+                    singlePacketOutEventChannel.addTransientEntry(eth.getDestinationMAC().toLong(), key);
+                }
+            }
+        }
     }
 
     // Not used because device manager currently updates the database
     // for ARP replies. May be useful in the future.
     private void handleArpReply(IOFSwitch sw, OFPacketIn pi, ARP arp) {
         if (log.isTraceEnabled()) {
-            log.trace("ARP reply recieved: {} => {}, on {}/{}", new Object[] {
+            log.trace("ARP reply recieved: {} => {}, on {}/{}", new Object[]{
                     inetAddressToString(arp.getSenderProtocolAddress()),
                     HexString.toHexString(arp.getSenderHardwareAddress()),
                     HexString.toHexString(sw.getId()), pi.getInPort()});
@@ -660,19 +658,19 @@
         }
 
         // sendArpRequestToSwitches(ipAddress, eth.serialize());
-		SinglePacketOutNotification key =
-		    new SinglePacketOutNotification(eth.serialize(), ByteBuffer.wrap(ipAddress.getAddress()).getInt(),
-						    intf.getDpid(), intf.getPort());
-		singlePacketOutEventChannel.addTransientEntry(MACAddress.valueOf(senderMacAddress).toLong(), key);
+        SinglePacketOutNotification key =
+                new SinglePacketOutNotification(eth.serialize(), ByteBuffer.wrap(ipAddress.getAddress()).getInt(),
+                        intf.getDpid(), intf.getPort());
+        singlePacketOutEventChannel.addTransientEntry(MACAddress.valueOf(senderMacAddress).toLong(), key);
     }
-    
+
     private void sendArpRequestToSwitches(InetAddress dstAddress, byte[] arpRequest) {
-    		sendArpRequestToSwitches(dstAddress, arpRequest, 0,
-    		OFPort.OFPP_NONE.getValue());
+        sendArpRequestToSwitches(dstAddress, arpRequest, 0,
+                OFPort.OFPP_NONE.getValue());
     }
 
     private void sendArpRequestToSwitches(InetAddress dstAddress,
-            byte[] arpRequest, long inSwitch, short inPort) {
+                                          byte[] arpRequest, long inSwitch, short inPort) {
 
         if (configService.hasLayer3Configuration()) {
             Interface intf = configService.getOutgoingInterface(dstAddress);
@@ -718,14 +716,14 @@
 
         MACAddress mac = new MACAddress(arp.getSenderHardwareAddress());
 
-		ArpReplyNotification key =
-		    new ArpReplyNotification(ByteBuffer.wrap(targetAddress.getAddress()).getInt(), mac);
-		log.debug("ArpReplyNotification ip {}, mac{}", ByteBuffer.wrap(targetAddress.getAddress()).getInt(), mac);
-		arpReplyEventChannel.addTransientEntry(mac.toLong(), key);
+        ArpReplyNotification key =
+                new ArpReplyNotification(ByteBuffer.wrap(targetAddress.getAddress()).getInt(), mac);
+        log.debug("ArpReplyNotification ip {}, mac{}", ByteBuffer.wrap(targetAddress.getAddress()).getInt(), mac);
+        arpReplyEventChannel.addTransientEntry(mac.toLong(), key);
     }
 
     private void broadcastArpRequestOutMyEdge(byte[] arpRequest, long inSwitch,
-            short inPort) {
+                                              short inPort) {
         List<SwitchPort> switchPorts = new ArrayList<SwitchPort>();
 
         for (IOFSwitch sw : floodlightProvider.getSwitches().values()) {
@@ -736,27 +734,27 @@
 
             List<OFAction> actions = new ArrayList<OFAction>();
 
-			Switch graphSw = networkGraph.getSwitch(sw.getId());
-			Collection<net.onrc.onos.core.topology.Port> ports = graphSw.getPorts();
-			
-			if (ports == null) {
-				continue;
-			}
-			
-			for (net.onrc.onos.core.topology.Port portObject : ports) {
-				if (portObject.getOutgoingLink() == null && portObject.getNumber() > 0) {
-					Long portNumber = portObject.getNumber();
-					
-					if (sw.getId() == inSwitch && portNumber.shortValue() == inPort) {
-						// This is the port that the ARP message came in,
-						// so don't broadcast out this port
-						continue;
-					}		
-					switchPorts.add(new SwitchPort(new Dpid(sw.getId()), 
-							new net.onrc.onos.core.util.Port(portNumber.shortValue())));
-					actions.add(new OFActionOutput(portNumber.shortValue()));
-				}
-			}
+            Switch graphSw = networkGraph.getSwitch(sw.getId());
+            Collection<net.onrc.onos.core.topology.Port> ports = graphSw.getPorts();
+
+            if (ports == null) {
+                continue;
+            }
+
+            for (net.onrc.onos.core.topology.Port portObject : ports) {
+                if (portObject.getOutgoingLink() == null && portObject.getNumber() > 0) {
+                    Long portNumber = portObject.getNumber();
+
+                    if (sw.getId() == inSwitch && portNumber.shortValue() == inPort) {
+                        // This is the port that the ARP message came in,
+                        // so don't broadcast out this port
+                        continue;
+                    }
+                    switchPorts.add(new SwitchPort(new Dpid(sw.getId()),
+                            new net.onrc.onos.core.util.Port(portNumber.shortValue())));
+                    actions.add(new OFActionOutput(portNumber.shortValue()));
+                }
+            }
 
             po.setActions(actions);
             short actionsLength = (short) (actions.size() * OFActionOutput.MINIMUM_LENGTH);
@@ -801,11 +799,11 @@
     }
 
     private void sendArpReply(ARP arpRequest, long dpid, short port,
-            MACAddress targetMac) {
+                              MACAddress targetMac) {
         if (log.isTraceEnabled()) {
             log.trace(
                     "Sending reply {} => {} to {}",
-                    new Object[] {
+                    new Object[]{
                             inetAddressToString(arpRequest
                                     .getTargetProtocolAddress()),
                             targetMac,
@@ -883,7 +881,7 @@
 
     @Override
     public void sendArpRequest(InetAddress ipAddress, IArpRequester requester,
-            boolean retry) {
+                               boolean retry) {
         arpRequests.put(ipAddress, new ArpRequest(requester, retry));
 
         // Sanity check to make sure we don't send a request for our own address
@@ -898,7 +896,7 @@
     }
 
     private void sendArpReplyToWaitingRequesters(InetAddress address,
-            MACAddress mac) {
+                                                 MACAddress mac) {
         log.debug("Sending ARP reply for {} to requesters",
                 address.getHostAddress());
 
@@ -920,16 +918,16 @@
 
         //TODO here, comment outed from long time ago. I will check if we need it later.
         /*IDeviceObject deviceObject = deviceStorage.getDeviceByIP(
-        		InetAddresses.coerceToInteger(address));
+                InetAddresses.coerceToInteger(address));
 
         MACAddress mac = MACAddress.valueOf(deviceObject.getMACAddress());
 
         log.debug("Found {} at {} in network map",
-        		address.getHostAddress(), mac);*/
+                address.getHostAddress(), mac);*/
 
         // Don't hold an ARP lock while dispatching requests
         for (ArpRequest request : requestsToSend) {
             request.dispatchReply(address, mac);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/SinglePacketOutNotification.java b/src/main/java/net/onrc/onos/apps/proxyarp/SinglePacketOutNotification.java
index 8ee255b..ff5ab87 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/SinglePacketOutNotification.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/SinglePacketOutNotification.java
@@ -1,8 +1,8 @@
 package net.onrc.onos.apps.proxyarp;
 
 
-
 // TODO This class is too generic to be handled by ProxyArpService.
+
 /**
  * Notification to another ONOS instance to send a packet out a single port.
  */
@@ -16,13 +16,14 @@
 
     /**
      * Class constructor.
-     * @param packet the packet data to send in the packet-out
-     * @param address target IP address if the packet is an ARP packet
+     *
+     * @param packet    the packet data to send in the packet-out
+     * @param address   target IP address if the packet is an ARP packet
      * @param outSwitch the dpid of the switch to send the packet on
-     * @param outPort the port number of the port to send the packet out
+     * @param outPort   the port number of the port to send the packet out
      */
     public SinglePacketOutNotification(byte[] packet, int address,
-            long outSwitch, short outPort) {
+                                       long outSwitch, short outPort) {
         super(packet);
 
         this.address = address;
@@ -32,6 +33,7 @@
 
     /**
      * Get the dpid of the switch the packet will be sent out.
+     *
      * @return the switch's dpid
      */
     public long getOutSwitch() {
@@ -40,6 +42,7 @@
 
     /**
      * Get the port number of the port the packet will be sent out.
+     *
      * @return the port number
      */
     public short getOutPort() {
@@ -48,8 +51,9 @@
 
     /**
      * Get the target IP address if the packet is an ARP packet.
+     *
      * @return the target IP address for ARP packets, or null if the packet is
-     *         not an ARP packet
+     * not an ARP packet
      */
     public int getTargetAddress() {
         return address;
diff --git a/src/main/java/net/onrc/onos/core/datagrid/web/GetNGFlowsSummaryResource.java b/src/main/java/net/onrc/onos/core/datagrid/web/GetNGFlowsSummaryResource.java
index 64edb24..fa7c6d1 100644
--- a/src/main/java/net/onrc/onos/core/datagrid/web/GetNGFlowsSummaryResource.java
+++ b/src/main/java/net/onrc/onos/core/datagrid/web/GetNGFlowsSummaryResource.java
@@ -29,9 +29,9 @@
 
 /**
  * REST API call to get a summary of Flow Paths.
- *
+ * <p/>
  * NOTE: This REST API call is needed for the ONOS GUI.
- *
+ * <p/>
  * GET /wm/onos/datagrid/get/ng-flows/summary/json
  */
 public class GetNGFlowsSummaryResource extends ServerResource {
diff --git a/src/main/java/net/onrc/onos/core/datastore/DataStoreClient.java b/src/main/java/net/onrc/onos/core/datastore/DataStoreClient.java
index 7ec6251..be9fce5 100644
--- a/src/main/java/net/onrc/onos/core/datastore/DataStoreClient.java
+++ b/src/main/java/net/onrc/onos/core/datastore/DataStoreClient.java
@@ -8,17 +8,18 @@
     private static final String BACKEND = System.getProperty("net.onrc.onos.core.datastore.backend", "hazelcast");
 
     // Suppresses default constructor, ensuring non-instantiability.
-    private DataStoreClient() {}
+    private DataStoreClient() {
+    }
 
     public static IKVClient getClient() {
         // TODO read config and return appropriate IKVClient
         switch (BACKEND) {
-        case "ramcloud":
-            return RCClient.getClient();
-        case "hazelcast":
-            return HZClient.getClient();
-        default:
-            return HZClient.getClient();
+            case "ramcloud":
+                return RCClient.getClient();
+            case "hazelcast":
+                return HZClient.getClient();
+            default:
+                return HZClient.getClient();
         }
     }
 
diff --git a/src/main/java/net/onrc/onos/core/datastore/IKVClient.java b/src/main/java/net/onrc/onos/core/datastore/IKVClient.java
index e298548..50bdf92 100644
--- a/src/main/java/net/onrc/onos/core/datastore/IKVClient.java
+++ b/src/main/java/net/onrc/onos/core/datastore/IKVClient.java
@@ -14,7 +14,7 @@
 
     /**
      * Drop table.
-     *
+     * <p/>
      * Behavior of IKVTable instances accessing dropped table is undefined.
      *
      * @param table IKVTable to drop.
@@ -58,8 +58,7 @@
      * @param tableId
      * @param key
      * @param value
-     * @param version
-     *            expected version in the data store
+     * @param version expected version in the data store
      * @return version after update
      * @throws ObjectDoesntExistException
      * @throws WrongVersionException
@@ -69,8 +68,9 @@
 
     /**
      * Update an existing Key-Value entry in table, without checking version.
-     *
+     * <p/>
      * FIXME remove this method and use forceCreate for this purpose?
+     *
      * @param tableId
      * @param key
      * @param value
@@ -83,13 +83,13 @@
 
     // TODO Adding serialized value as parameter to this interface may
     // give an option to improve performance on some backends.
+
     /**
      * Remove an existing Key-Value entry in table
      *
      * @param tableId
      * @param key
-     * @param version
-     *            expected version in the data store
+     * @param version expected version in the data store
      * @return version of removed object
      * @throws ObjectDoesntExistException
      * @throws WrongVersionException
@@ -108,35 +108,34 @@
 
     /**
      * Get all the entries in table.
+     *
      * @param tableId
      * @return entries in this table.
      */
     public Iterable<IKVEntry> getAllEntries(IKVTableID tableId);
 
     /**
-     *
-     * @see #create(IKVTableID, byte[], byte[])
-     *
      * @return IMultiOpEntry for this operation
-     *
+     * @see #create(IKVTableID, byte[], byte[])
      */
     public IMultiEntryOperation createOp(IKVTableID tableId, byte[] key, byte[] value);
 
     public IMultiEntryOperation forceCreateOp(IKVTableID tableId, byte[] key,
-            byte[] value);
+                                              byte[] value);
 
     public IMultiEntryOperation readOp(IKVTableID tableId, byte[] key);
 
     public IMultiEntryOperation updateOp(IKVTableID tableId, byte[] key, byte[] value,
-            long version);
+                                         long version);
 
     public IMultiEntryOperation deleteOp(IKVTableID tableId, byte[] key, byte[] value,
-            long version);
+                                         long version);
 
     public IMultiEntryOperation forceDeleteOp(IKVTableID tableId, byte[] key);
 
     /**
      * Batch delete operation
+     *
      * @param ops delete operations
      * @return true if failed operation exists
      */
@@ -144,6 +143,7 @@
 
     /**
      * Batch write operation
+     *
      * @param ops write operations
      * @return true if failed operation exists
      */
@@ -151,6 +151,7 @@
 
     /**
      * Batch read operation
+     *
      * @param ops read operations
      * @return true if failed operation exists
      */
diff --git a/src/main/java/net/onrc/onos/core/datastore/IKVTable.java b/src/main/java/net/onrc/onos/core/datastore/IKVTable.java
index 864b270..2260ad0 100644
--- a/src/main/java/net/onrc/onos/core/datastore/IKVTable.java
+++ b/src/main/java/net/onrc/onos/core/datastore/IKVTable.java
@@ -63,8 +63,7 @@
      *
      * @param key
      * @param value
-     * @param version
-     *            expected version in the data store
+     * @param version expected version in the data store
      * @return version after update
      * @throws ObjectDoesntExistException
      * @throws WrongVersionException
@@ -87,8 +86,7 @@
      * Remove an existing Key-Value entry in table
      *
      * @param key
-     * @param version
-     *            expected version in the data store
+     * @param version expected version in the data store
      * @return version of removed object
      * @throws ObjectDoesntExistException
      * @throws WrongVersionException
@@ -106,6 +104,7 @@
 
     /**
      * Get all the entries in table.
+     *
      * @return entries in this table.
      */
     public Iterable<IKVEntry> getAllEntries();
diff --git a/src/main/java/net/onrc/onos/core/datastore/ObjectDoesntExistException.java b/src/main/java/net/onrc/onos/core/datastore/ObjectDoesntExistException.java
index 06d21ca..354cd9c 100644
--- a/src/main/java/net/onrc/onos/core/datastore/ObjectDoesntExistException.java
+++ b/src/main/java/net/onrc/onos/core/datastore/ObjectDoesntExistException.java
@@ -13,7 +13,7 @@
     }
 
     public ObjectDoesntExistException(final IKVTableID tableID,
-            final byte[] key, final Throwable cause) {
+                                      final byte[] key, final Throwable cause) {
         super(ByteArrayUtil.toHexStringBuffer(key, ":")
                 + " did not exist on table:" + tableID, cause);
     }
diff --git a/src/main/java/net/onrc/onos/core/datastore/ObjectExistsException.java b/src/main/java/net/onrc/onos/core/datastore/ObjectExistsException.java
index 75c4e4d..08be74f 100644
--- a/src/main/java/net/onrc/onos/core/datastore/ObjectExistsException.java
+++ b/src/main/java/net/onrc/onos/core/datastore/ObjectExistsException.java
@@ -13,7 +13,7 @@
     }
 
     public ObjectExistsException(final IKVTableID tableID, final byte[] key,
-            final Throwable cause) {
+                                 final Throwable cause) {
         super(ByteArrayUtil.toHexStringBuffer(key, ":")
                 + " already exist on table:" + tableID, cause);
     }
diff --git a/src/main/java/net/onrc/onos/core/datastore/RCProtos.java b/src/main/java/net/onrc/onos/core/datastore/RCProtos.java
index 5e823ee..44b6934 100644
--- a/src/main/java/net/onrc/onos/core/datastore/RCProtos.java
+++ b/src/main/java/net/onrc/onos/core/datastore/RCProtos.java
@@ -4,2174 +4,2388 @@
 package net.onrc.onos.core.datastore;
 
 public final class RCProtos {
-  private RCProtos() {}
-  public static void registerAllExtensions(
-      com.google.protobuf.ExtensionRegistry registry) {
-  }
-  public interface SwitchPropertyOrBuilder
-      extends com.google.protobuf.MessageOrBuilder {
-
-    // required int64 dpid = 1;
-    /**
-     * <code>required int64 dpid = 1;</code>
-     */
-    boolean hasDpid();
-    /**
-     * <code>required int64 dpid = 1;</code>
-     */
-    long getDpid();
-
-    // required int32 status = 2;
-    /**
-     * <code>required int32 status = 2;</code>
-     */
-    boolean hasStatus();
-    /**
-     * <code>required int32 status = 2;</code>
-     */
-    int getStatus();
-
-    // optional bytes value = 3;
-    /**
-     * <code>optional bytes value = 3;</code>
-     */
-    boolean hasValue();
-    /**
-     * <code>optional bytes value = 3;</code>
-     */
-    com.google.protobuf.ByteString getValue();
-  }
-  /**
-   * Protobuf type {@code RCProtos.SwitchProperty}
-   */
-  public static final class SwitchProperty extends
-      com.google.protobuf.GeneratedMessage
-      implements SwitchPropertyOrBuilder {
-    // Use SwitchProperty.newBuilder() to construct.
-    private SwitchProperty(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
-      super(builder);
-      this.unknownFields = builder.getUnknownFields();
-    }
-    private SwitchProperty(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final SwitchProperty defaultInstance;
-    public static SwitchProperty getDefaultInstance() {
-      return defaultInstance;
+    private RCProtos() {
     }
 
-    public SwitchProperty getDefaultInstanceForType() {
-      return defaultInstance;
+    public static void registerAllExtensions(
+            com.google.protobuf.ExtensionRegistry registry) {
     }
 
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
-        getUnknownFields() {
-      return this.unknownFields;
-    }
-    private SwitchProperty(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-              bitField0_ |= 0x00000001;
-              dpid_ = input.readInt64();
-              break;
-            }
-            case 16: {
-              bitField0_ |= 0x00000002;
-              status_ = input.readInt32();
-              break;
-            }
-            case 26: {
-              bitField0_ |= 0x00000004;
-              value_ = input.readBytes();
-              break;
-            }
-          }
-        }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
-        getDescriptor() {
-      return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_descriptor;
+    public interface SwitchPropertyOrBuilder
+            extends com.google.protobuf.MessageOrBuilder {
+
+        // required int64 dpid = 1;
+
+        /**
+         * <code>required int64 dpid = 1;</code>
+         */
+        boolean hasDpid();
+
+        /**
+         * <code>required int64 dpid = 1;</code>
+         */
+        long getDpid();
+
+        // required int32 status = 2;
+
+        /**
+         * <code>required int32 status = 2;</code>
+         */
+        boolean hasStatus();
+
+        /**
+         * <code>required int32 status = 2;</code>
+         */
+        int getStatus();
+
+        // optional bytes value = 3;
+
+        /**
+         * <code>optional bytes value = 3;</code>
+         */
+        boolean hasValue();
+
+        /**
+         * <code>optional bytes value = 3;</code>
+         */
+        com.google.protobuf.ByteString getValue();
     }
 
-    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
-        internalGetFieldAccessorTable() {
-      return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              net.onrc.onos.core.datastore.RCProtos.SwitchProperty.class, net.onrc.onos.core.datastore.RCProtos.SwitchProperty.Builder.class);
-    }
-
-    public static com.google.protobuf.Parser<SwitchProperty> PARSER =
-        new com.google.protobuf.AbstractParser<SwitchProperty>() {
-      public SwitchProperty parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new SwitchProperty(input, extensionRegistry);
-      }
-    };
-
-    @java.lang.Override
-    public com.google.protobuf.Parser<SwitchProperty> getParserForType() {
-      return PARSER;
-    }
-
-    private int bitField0_;
-    // required int64 dpid = 1;
-    public static final int DPID_FIELD_NUMBER = 1;
-    private long dpid_;
-    /**
-     * <code>required int64 dpid = 1;</code>
-     */
-    public boolean hasDpid() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
-    }
-    /**
-     * <code>required int64 dpid = 1;</code>
-     */
-    public long getDpid() {
-      return dpid_;
-    }
-
-    // required int32 status = 2;
-    public static final int STATUS_FIELD_NUMBER = 2;
-    private int status_;
-    /**
-     * <code>required int32 status = 2;</code>
-     */
-    public boolean hasStatus() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
-    }
-    /**
-     * <code>required int32 status = 2;</code>
-     */
-    public int getStatus() {
-      return status_;
-    }
-
-    // optional bytes value = 3;
-    public static final int VALUE_FIELD_NUMBER = 3;
-    private com.google.protobuf.ByteString value_;
-    /**
-     * <code>optional bytes value = 3;</code>
-     */
-    public boolean hasValue() {
-      return ((bitField0_ & 0x00000004) == 0x00000004);
-    }
-    /**
-     * <code>optional bytes value = 3;</code>
-     */
-    public com.google.protobuf.ByteString getValue() {
-      return value_;
-    }
-
-    private void initFields() {
-      dpid_ = 0L;
-      status_ = 0;
-      value_ = com.google.protobuf.ByteString.EMPTY;
-    }
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized != -1) return isInitialized == 1;
-
-      if (!hasDpid()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      if (!hasStatus()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        output.writeInt64(1, dpid_);
-      }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        output.writeInt32(2, status_);
-      }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        output.writeBytes(3, value_);
-      }
-      getUnknownFields().writeTo(output);
-    }
-
-    private int memoizedSerializedSize = -1;
-    public int getSerializedSize() {
-      int size = memoizedSerializedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt64Size(1, dpid_);
-      }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(2, status_);
-      }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(3, value_);
-      }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
-      return size;
-    }
-
-    private static final long serialVersionUID = 0L;
-    @java.lang.Override
-    protected java.lang.Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
-    }
-
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
-    }
-
-    public static Builder newBuilder() { return Builder.create(); }
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(net.onrc.onos.core.datastore.RCProtos.SwitchProperty prototype) {
-      return newBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() { return newBuilder(this); }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
     /**
      * Protobuf type {@code RCProtos.SwitchProperty}
      */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder>
-       implements net.onrc.onos.core.datastore.RCProtos.SwitchPropertyOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                net.onrc.onos.core.datastore.RCProtos.SwitchProperty.class, net.onrc.onos.core.datastore.RCProtos.SwitchProperty.Builder.class);
-      }
-
-      // Construct using net.onrc.onos.core.datastore.RCProtos.SwitchProperty.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+    public static final class SwitchProperty extends
+            com.google.protobuf.GeneratedMessage
+            implements SwitchPropertyOrBuilder {
+        // Use SwitchProperty.newBuilder() to construct.
+        private SwitchProperty(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+            super(builder);
+            this.unknownFields = builder.getUnknownFields();
         }
-      }
-      private static Builder create() {
-        return new Builder();
-      }
 
-      public Builder clear() {
-        super.clear();
-        dpid_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000001);
-        status_ = 0;
-        bitField0_ = (bitField0_ & ~0x00000002);
-        value_ = com.google.protobuf.ByteString.EMPTY;
-        bitField0_ = (bitField0_ & ~0x00000004);
-        return this;
-      }
-
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_descriptor;
-      }
-
-      public net.onrc.onos.core.datastore.RCProtos.SwitchProperty getDefaultInstanceForType() {
-        return net.onrc.onos.core.datastore.RCProtos.SwitchProperty.getDefaultInstance();
-      }
-
-      public net.onrc.onos.core.datastore.RCProtos.SwitchProperty build() {
-        net.onrc.onos.core.datastore.RCProtos.SwitchProperty result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
+        private SwitchProperty(boolean noInit) {
+            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
         }
-        return result;
-      }
 
-      public net.onrc.onos.core.datastore.RCProtos.SwitchProperty buildPartial() {
-        net.onrc.onos.core.datastore.RCProtos.SwitchProperty result = new net.onrc.onos.core.datastore.RCProtos.SwitchProperty(this);
-        int from_bitField0_ = bitField0_;
-        int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
+        private static final SwitchProperty defaultInstance;
+
+        public static SwitchProperty getDefaultInstance() {
+            return defaultInstance;
         }
-        result.dpid_ = dpid_;
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
+
+        public SwitchProperty getDefaultInstanceForType() {
+            return defaultInstance;
         }
-        result.status_ = status_;
-        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-          to_bitField0_ |= 0x00000004;
-        }
-        result.value_ = value_;
-        result.bitField0_ = to_bitField0_;
-        onBuilt();
-        return result;
-      }
 
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof net.onrc.onos.core.datastore.RCProtos.SwitchProperty) {
-          return mergeFrom((net.onrc.onos.core.datastore.RCProtos.SwitchProperty)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
+        private final com.google.protobuf.UnknownFieldSet unknownFields;
 
-      public Builder mergeFrom(net.onrc.onos.core.datastore.RCProtos.SwitchProperty other) {
-        if (other == net.onrc.onos.core.datastore.RCProtos.SwitchProperty.getDefaultInstance()) return this;
-        if (other.hasDpid()) {
-          setDpid(other.getDpid());
-        }
-        if (other.hasStatus()) {
-          setStatus(other.getStatus());
-        }
-        if (other.hasValue()) {
-          setValue(other.getValue());
-        }
-        this.mergeUnknownFields(other.getUnknownFields());
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        if (!hasDpid()) {
-          
-          return false;
-        }
-        if (!hasStatus()) {
-          
-          return false;
-        }
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        net.onrc.onos.core.datastore.RCProtos.SwitchProperty parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (net.onrc.onos.core.datastore.RCProtos.SwitchProperty) e.getUnfinishedMessage();
-          throw e;
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-      private int bitField0_;
-
-      // required int64 dpid = 1;
-      private long dpid_ ;
-      /**
-       * <code>required int64 dpid = 1;</code>
-       */
-      public boolean hasDpid() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
-      }
-      /**
-       * <code>required int64 dpid = 1;</code>
-       */
-      public long getDpid() {
-        return dpid_;
-      }
-      /**
-       * <code>required int64 dpid = 1;</code>
-       */
-      public Builder setDpid(long value) {
-        bitField0_ |= 0x00000001;
-        dpid_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required int64 dpid = 1;</code>
-       */
-      public Builder clearDpid() {
-        bitField0_ = (bitField0_ & ~0x00000001);
-        dpid_ = 0L;
-        onChanged();
-        return this;
-      }
-
-      // required int32 status = 2;
-      private int status_ ;
-      /**
-       * <code>required int32 status = 2;</code>
-       */
-      public boolean hasStatus() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
-      }
-      /**
-       * <code>required int32 status = 2;</code>
-       */
-      public int getStatus() {
-        return status_;
-      }
-      /**
-       * <code>required int32 status = 2;</code>
-       */
-      public Builder setStatus(int value) {
-        bitField0_ |= 0x00000002;
-        status_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required int32 status = 2;</code>
-       */
-      public Builder clearStatus() {
-        bitField0_ = (bitField0_ & ~0x00000002);
-        status_ = 0;
-        onChanged();
-        return this;
-      }
-
-      // optional bytes value = 3;
-      private com.google.protobuf.ByteString value_ = com.google.protobuf.ByteString.EMPTY;
-      /**
-       * <code>optional bytes value = 3;</code>
-       */
-      public boolean hasValue() {
-        return ((bitField0_ & 0x00000004) == 0x00000004);
-      }
-      /**
-       * <code>optional bytes value = 3;</code>
-       */
-      public com.google.protobuf.ByteString getValue() {
-        return value_;
-      }
-      /**
-       * <code>optional bytes value = 3;</code>
-       */
-      public Builder setValue(com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  bitField0_ |= 0x00000004;
-        value_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>optional bytes value = 3;</code>
-       */
-      public Builder clearValue() {
-        bitField0_ = (bitField0_ & ~0x00000004);
-        value_ = getDefaultInstance().getValue();
-        onChanged();
-        return this;
-      }
-
-      // @@protoc_insertion_point(builder_scope:RCProtos.SwitchProperty)
-    }
-
-    static {
-      defaultInstance = new SwitchProperty(true);
-      defaultInstance.initFields();
-    }
-
-    // @@protoc_insertion_point(class_scope:RCProtos.SwitchProperty)
-  }
-
-  public interface PortPropertyOrBuilder
-      extends com.google.protobuf.MessageOrBuilder {
-
-    // required int64 dpid = 1;
-    /**
-     * <code>required int64 dpid = 1;</code>
-     */
-    boolean hasDpid();
-    /**
-     * <code>required int64 dpid = 1;</code>
-     */
-    long getDpid();
-
-    // required int64 number = 2;
-    /**
-     * <code>required int64 number = 2;</code>
-     */
-    boolean hasNumber();
-    /**
-     * <code>required int64 number = 2;</code>
-     */
-    long getNumber();
-
-    // required int32 status = 3;
-    /**
-     * <code>required int32 status = 3;</code>
-     */
-    boolean hasStatus();
-    /**
-     * <code>required int32 status = 3;</code>
-     */
-    int getStatus();
-
-    // optional bytes value = 4;
-    /**
-     * <code>optional bytes value = 4;</code>
-     */
-    boolean hasValue();
-    /**
-     * <code>optional bytes value = 4;</code>
-     */
-    com.google.protobuf.ByteString getValue();
-  }
-  /**
-   * Protobuf type {@code RCProtos.PortProperty}
-   */
-  public static final class PortProperty extends
-      com.google.protobuf.GeneratedMessage
-      implements PortPropertyOrBuilder {
-    // Use PortProperty.newBuilder() to construct.
-    private PortProperty(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
-      super(builder);
-      this.unknownFields = builder.getUnknownFields();
-    }
-    private PortProperty(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final PortProperty defaultInstance;
-    public static PortProperty getDefaultInstance() {
-      return defaultInstance;
-    }
-
-    public PortProperty getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
+        @java.lang.Override
+        public final com.google.protobuf.UnknownFieldSet
         getUnknownFields() {
-      return this.unknownFields;
-    }
-    private PortProperty(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
-          com.google.protobuf.UnknownFieldSet.newBuilder();
-      try {
-        boolean done = false;
-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
-            default: {
-              if (!parseUnknownField(input, unknownFields,
-                                     extensionRegistry, tag)) {
-                done = true;
-              }
-              break;
-            }
-            case 8: {
-              bitField0_ |= 0x00000001;
-              dpid_ = input.readInt64();
-              break;
-            }
-            case 16: {
-              bitField0_ |= 0x00000002;
-              number_ = input.readInt64();
-              break;
-            }
-            case 24: {
-              bitField0_ |= 0x00000004;
-              status_ = input.readInt32();
-              break;
-            }
-            case 34: {
-              bitField0_ |= 0x00000008;
-              value_ = input.readBytes();
-              break;
-            }
-          }
+            return this.unknownFields;
         }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
-            e.getMessage()).setUnfinishedMessage(this);
-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
+
+        private SwitchProperty(
+                com.google.protobuf.CodedInputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            initFields();
+            int mutable_bitField0_ = 0;
+            com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+                    com.google.protobuf.UnknownFieldSet.newBuilder();
+            try {
+                boolean done = false;
+                while (!done) {
+                    int tag = input.readTag();
+                    switch (tag) {
+                        case 0:
+                            done = true;
+                            break;
+                        default: {
+                            if (!parseUnknownField(input, unknownFields,
+                                    extensionRegistry, tag)) {
+                                done = true;
+                            }
+                            break;
+                        }
+                        case 8: {
+                            bitField0_ |= 0x00000001;
+                            dpid_ = input.readInt64();
+                            break;
+                        }
+                        case 16: {
+                            bitField0_ |= 0x00000002;
+                            status_ = input.readInt32();
+                            break;
+                        }
+                        case 26: {
+                            bitField0_ |= 0x00000004;
+                            value_ = input.readBytes();
+                            break;
+                        }
+                    }
+                }
+            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+                throw e.setUnfinishedMessage(this);
+            } catch (java.io.IOException e) {
+                throw new com.google.protobuf.InvalidProtocolBufferException(
+                        e.getMessage()).setUnfinishedMessage(this);
+            } finally {
+                this.unknownFields = unknownFields.build();
+                makeExtensionsImmutable();
+            }
+        }
+
+        public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_descriptor;
-    }
+            return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_descriptor;
+        }
 
-    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              net.onrc.onos.core.datastore.RCProtos.PortProperty.class, net.onrc.onos.core.datastore.RCProtos.PortProperty.Builder.class);
+            return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_fieldAccessorTable
+                    .ensureFieldAccessorsInitialized(
+                            net.onrc.onos.core.datastore.RCProtos.SwitchProperty.class, net.onrc.onos.core.datastore.RCProtos.SwitchProperty.Builder.class);
+        }
+
+        public static com.google.protobuf.Parser<SwitchProperty> PARSER =
+                new com.google.protobuf.AbstractParser<SwitchProperty>() {
+                    public SwitchProperty parsePartialFrom(
+                            com.google.protobuf.CodedInputStream input,
+                            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                            throws com.google.protobuf.InvalidProtocolBufferException {
+                        return new SwitchProperty(input, extensionRegistry);
+                    }
+                };
+
+        @java.lang.Override
+        public com.google.protobuf.Parser<SwitchProperty> getParserForType() {
+            return PARSER;
+        }
+
+        private int bitField0_;
+        // required int64 dpid = 1;
+        public static final int DPID_FIELD_NUMBER = 1;
+        private long dpid_;
+
+        /**
+         * <code>required int64 dpid = 1;</code>
+         */
+        public boolean hasDpid() {
+            return ((bitField0_ & 0x00000001) == 0x00000001);
+        }
+
+        /**
+         * <code>required int64 dpid = 1;</code>
+         */
+        public long getDpid() {
+            return dpid_;
+        }
+
+        // required int32 status = 2;
+        public static final int STATUS_FIELD_NUMBER = 2;
+        private int status_;
+
+        /**
+         * <code>required int32 status = 2;</code>
+         */
+        public boolean hasStatus() {
+            return ((bitField0_ & 0x00000002) == 0x00000002);
+        }
+
+        /**
+         * <code>required int32 status = 2;</code>
+         */
+        public int getStatus() {
+            return status_;
+        }
+
+        // optional bytes value = 3;
+        public static final int VALUE_FIELD_NUMBER = 3;
+        private com.google.protobuf.ByteString value_;
+
+        /**
+         * <code>optional bytes value = 3;</code>
+         */
+        public boolean hasValue() {
+            return ((bitField0_ & 0x00000004) == 0x00000004);
+        }
+
+        /**
+         * <code>optional bytes value = 3;</code>
+         */
+        public com.google.protobuf.ByteString getValue() {
+            return value_;
+        }
+
+        private void initFields() {
+            dpid_ = 0L;
+            status_ = 0;
+            value_ = com.google.protobuf.ByteString.EMPTY;
+        }
+
+        private byte memoizedIsInitialized = -1;
+
+        public final boolean isInitialized() {
+            byte isInitialized = memoizedIsInitialized;
+            if (isInitialized != -1) return isInitialized == 1;
+
+            if (!hasDpid()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            if (!hasStatus()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            memoizedIsInitialized = 1;
+            return true;
+        }
+
+        public void writeTo(com.google.protobuf.CodedOutputStream output)
+                throws java.io.IOException {
+            getSerializedSize();
+            if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                output.writeInt64(1, dpid_);
+            }
+            if (((bitField0_ & 0x00000002) == 0x00000002)) {
+                output.writeInt32(2, status_);
+            }
+            if (((bitField0_ & 0x00000004) == 0x00000004)) {
+                output.writeBytes(3, value_);
+            }
+            getUnknownFields().writeTo(output);
+        }
+
+        private int memoizedSerializedSize = -1;
+
+        public int getSerializedSize() {
+            int size = memoizedSerializedSize;
+            if (size != -1) return size;
+
+            size = 0;
+            if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeInt64Size(1, dpid_);
+            }
+            if (((bitField0_ & 0x00000002) == 0x00000002)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeInt32Size(2, status_);
+            }
+            if (((bitField0_ & 0x00000004) == 0x00000004)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeBytesSize(3, value_);
+            }
+            size += getUnknownFields().getSerializedSize();
+            memoizedSerializedSize = size;
+            return size;
+        }
+
+        private static final long serialVersionUID = 0L;
+
+        @java.lang.Override
+        protected java.lang.Object writeReplace()
+                throws java.io.ObjectStreamException {
+            return super.writeReplace();
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
+                com.google.protobuf.ByteString data)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
+                com.google.protobuf.ByteString data,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(byte[] data)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
+                byte[] data,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(java.io.InputStream input)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
+                java.io.InputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseDelimitedFrom(java.io.InputStream input)
+                throws java.io.IOException {
+            return PARSER.parseDelimitedFrom(input);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseDelimitedFrom(
+                java.io.InputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws java.io.IOException {
+            return PARSER.parseDelimitedFrom(input, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
+                com.google.protobuf.CodedInputStream input)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.SwitchProperty parseFrom(
+                com.google.protobuf.CodedInputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input, extensionRegistry);
+        }
+
+        public static Builder newBuilder() {
+            return Builder.create();
+        }
+
+        public Builder newBuilderForType() {
+            return newBuilder();
+        }
+
+        public static Builder newBuilder(net.onrc.onos.core.datastore.RCProtos.SwitchProperty prototype) {
+            return newBuilder().mergeFrom(prototype);
+        }
+
+        public Builder toBuilder() {
+            return newBuilder(this);
+        }
+
+        @java.lang.Override
+        protected Builder newBuilderForType(
+                com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+            Builder builder = new Builder(parent);
+            return builder;
+        }
+
+        /**
+         * Protobuf type {@code RCProtos.SwitchProperty}
+         */
+        public static final class Builder extends
+                com.google.protobuf.GeneratedMessage.Builder<Builder>
+                implements net.onrc.onos.core.datastore.RCProtos.SwitchPropertyOrBuilder {
+            public static final com.google.protobuf.Descriptors.Descriptor
+            getDescriptor() {
+                return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_descriptor;
+            }
+
+            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+            internalGetFieldAccessorTable() {
+                return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_fieldAccessorTable
+                        .ensureFieldAccessorsInitialized(
+                                net.onrc.onos.core.datastore.RCProtos.SwitchProperty.class, net.onrc.onos.core.datastore.RCProtos.SwitchProperty.Builder.class);
+            }
+
+            // Construct using net.onrc.onos.core.datastore.RCProtos.SwitchProperty.newBuilder()
+            private Builder() {
+                maybeForceBuilderInitialization();
+            }
+
+            private Builder(
+                    com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+                super(parent);
+                maybeForceBuilderInitialization();
+            }
+
+            private void maybeForceBuilderInitialization() {
+                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+                }
+            }
+
+            private static Builder create() {
+                return new Builder();
+            }
+
+            public Builder clear() {
+                super.clear();
+                dpid_ = 0L;
+                bitField0_ = (bitField0_ & ~0x00000001);
+                status_ = 0;
+                bitField0_ = (bitField0_ & ~0x00000002);
+                value_ = com.google.protobuf.ByteString.EMPTY;
+                bitField0_ = (bitField0_ & ~0x00000004);
+                return this;
+            }
+
+            public Builder clone() {
+                return create().mergeFrom(buildPartial());
+            }
+
+            public com.google.protobuf.Descriptors.Descriptor
+            getDescriptorForType() {
+                return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_SwitchProperty_descriptor;
+            }
+
+            public net.onrc.onos.core.datastore.RCProtos.SwitchProperty getDefaultInstanceForType() {
+                return net.onrc.onos.core.datastore.RCProtos.SwitchProperty.getDefaultInstance();
+            }
+
+            public net.onrc.onos.core.datastore.RCProtos.SwitchProperty build() {
+                net.onrc.onos.core.datastore.RCProtos.SwitchProperty result = buildPartial();
+                if (!result.isInitialized()) {
+                    throw newUninitializedMessageException(result);
+                }
+                return result;
+            }
+
+            public net.onrc.onos.core.datastore.RCProtos.SwitchProperty buildPartial() {
+                net.onrc.onos.core.datastore.RCProtos.SwitchProperty result = new net.onrc.onos.core.datastore.RCProtos.SwitchProperty(this);
+                int from_bitField0_ = bitField0_;
+                int to_bitField0_ = 0;
+                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+                    to_bitField0_ |= 0x00000001;
+                }
+                result.dpid_ = dpid_;
+                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+                    to_bitField0_ |= 0x00000002;
+                }
+                result.status_ = status_;
+                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+                    to_bitField0_ |= 0x00000004;
+                }
+                result.value_ = value_;
+                result.bitField0_ = to_bitField0_;
+                onBuilt();
+                return result;
+            }
+
+            public Builder mergeFrom(com.google.protobuf.Message other) {
+                if (other instanceof net.onrc.onos.core.datastore.RCProtos.SwitchProperty) {
+                    return mergeFrom((net.onrc.onos.core.datastore.RCProtos.SwitchProperty) other);
+                } else {
+                    super.mergeFrom(other);
+                    return this;
+                }
+            }
+
+            public Builder mergeFrom(net.onrc.onos.core.datastore.RCProtos.SwitchProperty other) {
+                if (other == net.onrc.onos.core.datastore.RCProtos.SwitchProperty.getDefaultInstance())
+                    return this;
+                if (other.hasDpid()) {
+                    setDpid(other.getDpid());
+                }
+                if (other.hasStatus()) {
+                    setStatus(other.getStatus());
+                }
+                if (other.hasValue()) {
+                    setValue(other.getValue());
+                }
+                this.mergeUnknownFields(other.getUnknownFields());
+                return this;
+            }
+
+            public final boolean isInitialized() {
+                if (!hasDpid()) {
+
+                    return false;
+                }
+                if (!hasStatus()) {
+
+                    return false;
+                }
+                return true;
+            }
+
+            public Builder mergeFrom(
+                    com.google.protobuf.CodedInputStream input,
+                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                    throws java.io.IOException {
+                net.onrc.onos.core.datastore.RCProtos.SwitchProperty parsedMessage = null;
+                try {
+                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+                    parsedMessage = (net.onrc.onos.core.datastore.RCProtos.SwitchProperty) e.getUnfinishedMessage();
+                    throw e;
+                } finally {
+                    if (parsedMessage != null) {
+                        mergeFrom(parsedMessage);
+                    }
+                }
+                return this;
+            }
+
+            private int bitField0_;
+
+            // required int64 dpid = 1;
+            private long dpid_;
+
+            /**
+             * <code>required int64 dpid = 1;</code>
+             */
+            public boolean hasDpid() {
+                return ((bitField0_ & 0x00000001) == 0x00000001);
+            }
+
+            /**
+             * <code>required int64 dpid = 1;</code>
+             */
+            public long getDpid() {
+                return dpid_;
+            }
+
+            /**
+             * <code>required int64 dpid = 1;</code>
+             */
+            public Builder setDpid(long value) {
+                bitField0_ |= 0x00000001;
+                dpid_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required int64 dpid = 1;</code>
+             */
+            public Builder clearDpid() {
+                bitField0_ = (bitField0_ & ~0x00000001);
+                dpid_ = 0L;
+                onChanged();
+                return this;
+            }
+
+            // required int32 status = 2;
+            private int status_;
+
+            /**
+             * <code>required int32 status = 2;</code>
+             */
+            public boolean hasStatus() {
+                return ((bitField0_ & 0x00000002) == 0x00000002);
+            }
+
+            /**
+             * <code>required int32 status = 2;</code>
+             */
+            public int getStatus() {
+                return status_;
+            }
+
+            /**
+             * <code>required int32 status = 2;</code>
+             */
+            public Builder setStatus(int value) {
+                bitField0_ |= 0x00000002;
+                status_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required int32 status = 2;</code>
+             */
+            public Builder clearStatus() {
+                bitField0_ = (bitField0_ & ~0x00000002);
+                status_ = 0;
+                onChanged();
+                return this;
+            }
+
+            // optional bytes value = 3;
+            private com.google.protobuf.ByteString value_ = com.google.protobuf.ByteString.EMPTY;
+
+            /**
+             * <code>optional bytes value = 3;</code>
+             */
+            public boolean hasValue() {
+                return ((bitField0_ & 0x00000004) == 0x00000004);
+            }
+
+            /**
+             * <code>optional bytes value = 3;</code>
+             */
+            public com.google.protobuf.ByteString getValue() {
+                return value_;
+            }
+
+            /**
+             * <code>optional bytes value = 3;</code>
+             */
+            public Builder setValue(com.google.protobuf.ByteString value) {
+                if (value == null) {
+                    throw new NullPointerException();
+                }
+                bitField0_ |= 0x00000004;
+                value_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>optional bytes value = 3;</code>
+             */
+            public Builder clearValue() {
+                bitField0_ = (bitField0_ & ~0x00000004);
+                value_ = getDefaultInstance().getValue();
+                onChanged();
+                return this;
+            }
+
+            // @@protoc_insertion_point(builder_scope:RCProtos.SwitchProperty)
+        }
+
+        static {
+            defaultInstance = new SwitchProperty(true);
+            defaultInstance.initFields();
+        }
+
+        // @@protoc_insertion_point(class_scope:RCProtos.SwitchProperty)
     }
 
-    public static com.google.protobuf.Parser<PortProperty> PARSER =
-        new com.google.protobuf.AbstractParser<PortProperty>() {
-      public PortProperty parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new PortProperty(input, extensionRegistry);
-      }
-    };
+    public interface PortPropertyOrBuilder
+            extends com.google.protobuf.MessageOrBuilder {
 
-    @java.lang.Override
-    public com.google.protobuf.Parser<PortProperty> getParserForType() {
-      return PARSER;
+        // required int64 dpid = 1;
+
+        /**
+         * <code>required int64 dpid = 1;</code>
+         */
+        boolean hasDpid();
+
+        /**
+         * <code>required int64 dpid = 1;</code>
+         */
+        long getDpid();
+
+        // required int64 number = 2;
+
+        /**
+         * <code>required int64 number = 2;</code>
+         */
+        boolean hasNumber();
+
+        /**
+         * <code>required int64 number = 2;</code>
+         */
+        long getNumber();
+
+        // required int32 status = 3;
+
+        /**
+         * <code>required int32 status = 3;</code>
+         */
+        boolean hasStatus();
+
+        /**
+         * <code>required int32 status = 3;</code>
+         */
+        int getStatus();
+
+        // optional bytes value = 4;
+
+        /**
+         * <code>optional bytes value = 4;</code>
+         */
+        boolean hasValue();
+
+        /**
+         * <code>optional bytes value = 4;</code>
+         */
+        com.google.protobuf.ByteString getValue();
     }
 
-    private int bitField0_;
-    // required int64 dpid = 1;
-    public static final int DPID_FIELD_NUMBER = 1;
-    private long dpid_;
-    /**
-     * <code>required int64 dpid = 1;</code>
-     */
-    public boolean hasDpid() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
-    }
-    /**
-     * <code>required int64 dpid = 1;</code>
-     */
-    public long getDpid() {
-      return dpid_;
-    }
-
-    // required int64 number = 2;
-    public static final int NUMBER_FIELD_NUMBER = 2;
-    private long number_;
-    /**
-     * <code>required int64 number = 2;</code>
-     */
-    public boolean hasNumber() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
-    }
-    /**
-     * <code>required int64 number = 2;</code>
-     */
-    public long getNumber() {
-      return number_;
-    }
-
-    // required int32 status = 3;
-    public static final int STATUS_FIELD_NUMBER = 3;
-    private int status_;
-    /**
-     * <code>required int32 status = 3;</code>
-     */
-    public boolean hasStatus() {
-      return ((bitField0_ & 0x00000004) == 0x00000004);
-    }
-    /**
-     * <code>required int32 status = 3;</code>
-     */
-    public int getStatus() {
-      return status_;
-    }
-
-    // optional bytes value = 4;
-    public static final int VALUE_FIELD_NUMBER = 4;
-    private com.google.protobuf.ByteString value_;
-    /**
-     * <code>optional bytes value = 4;</code>
-     */
-    public boolean hasValue() {
-      return ((bitField0_ & 0x00000008) == 0x00000008);
-    }
-    /**
-     * <code>optional bytes value = 4;</code>
-     */
-    public com.google.protobuf.ByteString getValue() {
-      return value_;
-    }
-
-    private void initFields() {
-      dpid_ = 0L;
-      number_ = 0L;
-      status_ = 0;
-      value_ = com.google.protobuf.ByteString.EMPTY;
-    }
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized != -1) return isInitialized == 1;
-
-      if (!hasDpid()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      if (!hasNumber()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      if (!hasStatus()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        output.writeInt64(1, dpid_);
-      }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        output.writeInt64(2, number_);
-      }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        output.writeInt32(3, status_);
-      }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
-        output.writeBytes(4, value_);
-      }
-      getUnknownFields().writeTo(output);
-    }
-
-    private int memoizedSerializedSize = -1;
-    public int getSerializedSize() {
-      int size = memoizedSerializedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt64Size(1, dpid_);
-      }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt64Size(2, number_);
-      }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(3, status_);
-      }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(4, value_);
-      }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
-      return size;
-    }
-
-    private static final long serialVersionUID = 0L;
-    @java.lang.Override
-    protected java.lang.Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
-    }
-
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
-    }
-
-    public static Builder newBuilder() { return Builder.create(); }
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(net.onrc.onos.core.datastore.RCProtos.PortProperty prototype) {
-      return newBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() { return newBuilder(this); }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
     /**
      * Protobuf type {@code RCProtos.PortProperty}
      */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder>
-       implements net.onrc.onos.core.datastore.RCProtos.PortPropertyOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_descriptor;
-      }
-
-      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                net.onrc.onos.core.datastore.RCProtos.PortProperty.class, net.onrc.onos.core.datastore.RCProtos.PortProperty.Builder.class);
-      }
-
-      // Construct using net.onrc.onos.core.datastore.RCProtos.PortProperty.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
-
-      private Builder(
-          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+    public static final class PortProperty extends
+            com.google.protobuf.GeneratedMessage
+            implements PortPropertyOrBuilder {
+        // Use PortProperty.newBuilder() to construct.
+        private PortProperty(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+            super(builder);
+            this.unknownFields = builder.getUnknownFields();
         }
-      }
-      private static Builder create() {
-        return new Builder();
-      }
 
-      public Builder clear() {
-        super.clear();
-        dpid_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000001);
-        number_ = 0L;
-        bitField0_ = (bitField0_ & ~0x00000002);
-        status_ = 0;
-        bitField0_ = (bitField0_ & ~0x00000004);
-        value_ = com.google.protobuf.ByteString.EMPTY;
-        bitField0_ = (bitField0_ & ~0x00000008);
-        return this;
-      }
-
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
-
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_descriptor;
-      }
-
-      public net.onrc.onos.core.datastore.RCProtos.PortProperty getDefaultInstanceForType() {
-        return net.onrc.onos.core.datastore.RCProtos.PortProperty.getDefaultInstance();
-      }
-
-      public net.onrc.onos.core.datastore.RCProtos.PortProperty build() {
-        net.onrc.onos.core.datastore.RCProtos.PortProperty result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
+        private PortProperty(boolean noInit) {
+            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
         }
-        return result;
-      }
 
-      public net.onrc.onos.core.datastore.RCProtos.PortProperty buildPartial() {
-        net.onrc.onos.core.datastore.RCProtos.PortProperty result = new net.onrc.onos.core.datastore.RCProtos.PortProperty(this);
-        int from_bitField0_ = bitField0_;
-        int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
+        private static final PortProperty defaultInstance;
+
+        public static PortProperty getDefaultInstance() {
+            return defaultInstance;
         }
-        result.dpid_ = dpid_;
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
+
+        public PortProperty getDefaultInstanceForType() {
+            return defaultInstance;
         }
-        result.number_ = number_;
-        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-          to_bitField0_ |= 0x00000004;
-        }
-        result.status_ = status_;
-        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
-          to_bitField0_ |= 0x00000008;
-        }
-        result.value_ = value_;
-        result.bitField0_ = to_bitField0_;
-        onBuilt();
-        return result;
-      }
 
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof net.onrc.onos.core.datastore.RCProtos.PortProperty) {
-          return mergeFrom((net.onrc.onos.core.datastore.RCProtos.PortProperty)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
+        private final com.google.protobuf.UnknownFieldSet unknownFields;
 
-      public Builder mergeFrom(net.onrc.onos.core.datastore.RCProtos.PortProperty other) {
-        if (other == net.onrc.onos.core.datastore.RCProtos.PortProperty.getDefaultInstance()) return this;
-        if (other.hasDpid()) {
-          setDpid(other.getDpid());
-        }
-        if (other.hasNumber()) {
-          setNumber(other.getNumber());
-        }
-        if (other.hasStatus()) {
-          setStatus(other.getStatus());
-        }
-        if (other.hasValue()) {
-          setValue(other.getValue());
-        }
-        this.mergeUnknownFields(other.getUnknownFields());
-        return this;
-      }
-
-      public final boolean isInitialized() {
-        if (!hasDpid()) {
-          
-          return false;
-        }
-        if (!hasNumber()) {
-          
-          return false;
-        }
-        if (!hasStatus()) {
-          
-          return false;
-        }
-        return true;
-      }
-
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        net.onrc.onos.core.datastore.RCProtos.PortProperty parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (net.onrc.onos.core.datastore.RCProtos.PortProperty) e.getUnfinishedMessage();
-          throw e;
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
-        }
-        return this;
-      }
-      private int bitField0_;
-
-      // required int64 dpid = 1;
-      private long dpid_ ;
-      /**
-       * <code>required int64 dpid = 1;</code>
-       */
-      public boolean hasDpid() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
-      }
-      /**
-       * <code>required int64 dpid = 1;</code>
-       */
-      public long getDpid() {
-        return dpid_;
-      }
-      /**
-       * <code>required int64 dpid = 1;</code>
-       */
-      public Builder setDpid(long value) {
-        bitField0_ |= 0x00000001;
-        dpid_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required int64 dpid = 1;</code>
-       */
-      public Builder clearDpid() {
-        bitField0_ = (bitField0_ & ~0x00000001);
-        dpid_ = 0L;
-        onChanged();
-        return this;
-      }
-
-      // required int64 number = 2;
-      private long number_ ;
-      /**
-       * <code>required int64 number = 2;</code>
-       */
-      public boolean hasNumber() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
-      }
-      /**
-       * <code>required int64 number = 2;</code>
-       */
-      public long getNumber() {
-        return number_;
-      }
-      /**
-       * <code>required int64 number = 2;</code>
-       */
-      public Builder setNumber(long value) {
-        bitField0_ |= 0x00000002;
-        number_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required int64 number = 2;</code>
-       */
-      public Builder clearNumber() {
-        bitField0_ = (bitField0_ & ~0x00000002);
-        number_ = 0L;
-        onChanged();
-        return this;
-      }
-
-      // required int32 status = 3;
-      private int status_ ;
-      /**
-       * <code>required int32 status = 3;</code>
-       */
-      public boolean hasStatus() {
-        return ((bitField0_ & 0x00000004) == 0x00000004);
-      }
-      /**
-       * <code>required int32 status = 3;</code>
-       */
-      public int getStatus() {
-        return status_;
-      }
-      /**
-       * <code>required int32 status = 3;</code>
-       */
-      public Builder setStatus(int value) {
-        bitField0_ |= 0x00000004;
-        status_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required int32 status = 3;</code>
-       */
-      public Builder clearStatus() {
-        bitField0_ = (bitField0_ & ~0x00000004);
-        status_ = 0;
-        onChanged();
-        return this;
-      }
-
-      // optional bytes value = 4;
-      private com.google.protobuf.ByteString value_ = com.google.protobuf.ByteString.EMPTY;
-      /**
-       * <code>optional bytes value = 4;</code>
-       */
-      public boolean hasValue() {
-        return ((bitField0_ & 0x00000008) == 0x00000008);
-      }
-      /**
-       * <code>optional bytes value = 4;</code>
-       */
-      public com.google.protobuf.ByteString getValue() {
-        return value_;
-      }
-      /**
-       * <code>optional bytes value = 4;</code>
-       */
-      public Builder setValue(com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  bitField0_ |= 0x00000008;
-        value_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>optional bytes value = 4;</code>
-       */
-      public Builder clearValue() {
-        bitField0_ = (bitField0_ & ~0x00000008);
-        value_ = getDefaultInstance().getValue();
-        onChanged();
-        return this;
-      }
-
-      // @@protoc_insertion_point(builder_scope:RCProtos.PortProperty)
-    }
-
-    static {
-      defaultInstance = new PortProperty(true);
-      defaultInstance.initFields();
-    }
-
-    // @@protoc_insertion_point(class_scope:RCProtos.PortProperty)
-  }
-
-  public interface LinkPropertyOrBuilder
-      extends com.google.protobuf.MessageOrBuilder {
-
-    // required bytes srcSwId = 1;
-    /**
-     * <code>required bytes srcSwId = 1;</code>
-     */
-    boolean hasSrcSwId();
-    /**
-     * <code>required bytes srcSwId = 1;</code>
-     */
-    com.google.protobuf.ByteString getSrcSwId();
-
-    // required bytes srcPortId = 2;
-    /**
-     * <code>required bytes srcPortId = 2;</code>
-     */
-    boolean hasSrcPortId();
-    /**
-     * <code>required bytes srcPortId = 2;</code>
-     */
-    com.google.protobuf.ByteString getSrcPortId();
-
-    // required bytes dstSwId = 3;
-    /**
-     * <code>required bytes dstSwId = 3;</code>
-     */
-    boolean hasDstSwId();
-    /**
-     * <code>required bytes dstSwId = 3;</code>
-     */
-    com.google.protobuf.ByteString getDstSwId();
-
-    // required bytes dstPortId = 4;
-    /**
-     * <code>required bytes dstPortId = 4;</code>
-     */
-    boolean hasDstPortId();
-    /**
-     * <code>required bytes dstPortId = 4;</code>
-     */
-    com.google.protobuf.ByteString getDstPortId();
-
-    // required int32 status = 5;
-    /**
-     * <code>required int32 status = 5;</code>
-     */
-    boolean hasStatus();
-    /**
-     * <code>required int32 status = 5;</code>
-     */
-    int getStatus();
-
-    // optional bytes value = 6;
-    /**
-     * <code>optional bytes value = 6;</code>
-     */
-    boolean hasValue();
-    /**
-     * <code>optional bytes value = 6;</code>
-     */
-    com.google.protobuf.ByteString getValue();
-  }
-  /**
-   * Protobuf type {@code RCProtos.LinkProperty}
-   */
-  public static final class LinkProperty extends
-      com.google.protobuf.GeneratedMessage
-      implements LinkPropertyOrBuilder {
-    // Use LinkProperty.newBuilder() to construct.
-    private LinkProperty(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
-      super(builder);
-      this.unknownFields = builder.getUnknownFields();
-    }
-    private LinkProperty(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
-
-    private static final LinkProperty defaultInstance;
-    public static LinkProperty getDefaultInstance() {
-      return defaultInstance;
-    }
-
-    public LinkProperty getDefaultInstanceForType() {
-      return defaultInstance;
-    }
-
-    private final com.google.protobuf.UnknownFieldSet unknownFields;
-    @java.lang.Override
-    public final com.google.protobuf.UnknownFieldSet
+        @java.lang.Override
+        public final com.google.protobuf.UnknownFieldSet
         getUnknownFields() {
-      return this.unknownFields;
-    }
-    private LinkProperty(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      initFields();
-      int mutable_bitField0_ = 0;
-      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
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-      try {
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-        while (!done) {
-          int tag = input.readTag();
-          switch (tag) {
-            case 0:
-              done = true;
-              break;
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-            case 26: {
-              bitField0_ |= 0x00000004;
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-            case 34: {
-              bitField0_ |= 0x00000008;
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-            case 40: {
-              bitField0_ |= 0x00000010;
-              status_ = input.readInt32();
-              break;
-            }
-            case 50: {
-              bitField0_ |= 0x00000020;
-              value_ = input.readBytes();
-              break;
-            }
-          }
+            return this.unknownFields;
         }
-      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-        throw e.setUnfinishedMessage(this);
-      } catch (java.io.IOException e) {
-        throw new com.google.protobuf.InvalidProtocolBufferException(
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-      } finally {
-        this.unknownFields = unknownFields.build();
-        makeExtensionsImmutable();
-      }
-    }
-    public static final com.google.protobuf.Descriptors.Descriptor
+
+        private PortProperty(
+                com.google.protobuf.CodedInputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            initFields();
+            int mutable_bitField0_ = 0;
+            com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+                    com.google.protobuf.UnknownFieldSet.newBuilder();
+            try {
+                boolean done = false;
+                while (!done) {
+                    int tag = input.readTag();
+                    switch (tag) {
+                        case 0:
+                            done = true;
+                            break;
+                        default: {
+                            if (!parseUnknownField(input, unknownFields,
+                                    extensionRegistry, tag)) {
+                                done = true;
+                            }
+                            break;
+                        }
+                        case 8: {
+                            bitField0_ |= 0x00000001;
+                            dpid_ = input.readInt64();
+                            break;
+                        }
+                        case 16: {
+                            bitField0_ |= 0x00000002;
+                            number_ = input.readInt64();
+                            break;
+                        }
+                        case 24: {
+                            bitField0_ |= 0x00000004;
+                            status_ = input.readInt32();
+                            break;
+                        }
+                        case 34: {
+                            bitField0_ |= 0x00000008;
+                            value_ = input.readBytes();
+                            break;
+                        }
+                    }
+                }
+            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+                throw e.setUnfinishedMessage(this);
+            } catch (java.io.IOException e) {
+                throw new com.google.protobuf.InvalidProtocolBufferException(
+                        e.getMessage()).setUnfinishedMessage(this);
+            } finally {
+                this.unknownFields = unknownFields.build();
+                makeExtensionsImmutable();
+            }
+        }
+
+        public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_descriptor;
-    }
+            return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_descriptor;
+        }
 
-    protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_fieldAccessorTable
-          .ensureFieldAccessorsInitialized(
-              net.onrc.onos.core.datastore.RCProtos.LinkProperty.class, net.onrc.onos.core.datastore.RCProtos.LinkProperty.Builder.class);
+            return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_fieldAccessorTable
+                    .ensureFieldAccessorsInitialized(
+                            net.onrc.onos.core.datastore.RCProtos.PortProperty.class, net.onrc.onos.core.datastore.RCProtos.PortProperty.Builder.class);
+        }
+
+        public static com.google.protobuf.Parser<PortProperty> PARSER =
+                new com.google.protobuf.AbstractParser<PortProperty>() {
+                    public PortProperty parsePartialFrom(
+                            com.google.protobuf.CodedInputStream input,
+                            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                            throws com.google.protobuf.InvalidProtocolBufferException {
+                        return new PortProperty(input, extensionRegistry);
+                    }
+                };
+
+        @java.lang.Override
+        public com.google.protobuf.Parser<PortProperty> getParserForType() {
+            return PARSER;
+        }
+
+        private int bitField0_;
+        // required int64 dpid = 1;
+        public static final int DPID_FIELD_NUMBER = 1;
+        private long dpid_;
+
+        /**
+         * <code>required int64 dpid = 1;</code>
+         */
+        public boolean hasDpid() {
+            return ((bitField0_ & 0x00000001) == 0x00000001);
+        }
+
+        /**
+         * <code>required int64 dpid = 1;</code>
+         */
+        public long getDpid() {
+            return dpid_;
+        }
+
+        // required int64 number = 2;
+        public static final int NUMBER_FIELD_NUMBER = 2;
+        private long number_;
+
+        /**
+         * <code>required int64 number = 2;</code>
+         */
+        public boolean hasNumber() {
+            return ((bitField0_ & 0x00000002) == 0x00000002);
+        }
+
+        /**
+         * <code>required int64 number = 2;</code>
+         */
+        public long getNumber() {
+            return number_;
+        }
+
+        // required int32 status = 3;
+        public static final int STATUS_FIELD_NUMBER = 3;
+        private int status_;
+
+        /**
+         * <code>required int32 status = 3;</code>
+         */
+        public boolean hasStatus() {
+            return ((bitField0_ & 0x00000004) == 0x00000004);
+        }
+
+        /**
+         * <code>required int32 status = 3;</code>
+         */
+        public int getStatus() {
+            return status_;
+        }
+
+        // optional bytes value = 4;
+        public static final int VALUE_FIELD_NUMBER = 4;
+        private com.google.protobuf.ByteString value_;
+
+        /**
+         * <code>optional bytes value = 4;</code>
+         */
+        public boolean hasValue() {
+            return ((bitField0_ & 0x00000008) == 0x00000008);
+        }
+
+        /**
+         * <code>optional bytes value = 4;</code>
+         */
+        public com.google.protobuf.ByteString getValue() {
+            return value_;
+        }
+
+        private void initFields() {
+            dpid_ = 0L;
+            number_ = 0L;
+            status_ = 0;
+            value_ = com.google.protobuf.ByteString.EMPTY;
+        }
+
+        private byte memoizedIsInitialized = -1;
+
+        public final boolean isInitialized() {
+            byte isInitialized = memoizedIsInitialized;
+            if (isInitialized != -1) return isInitialized == 1;
+
+            if (!hasDpid()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            if (!hasNumber()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            if (!hasStatus()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            memoizedIsInitialized = 1;
+            return true;
+        }
+
+        public void writeTo(com.google.protobuf.CodedOutputStream output)
+                throws java.io.IOException {
+            getSerializedSize();
+            if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                output.writeInt64(1, dpid_);
+            }
+            if (((bitField0_ & 0x00000002) == 0x00000002)) {
+                output.writeInt64(2, number_);
+            }
+            if (((bitField0_ & 0x00000004) == 0x00000004)) {
+                output.writeInt32(3, status_);
+            }
+            if (((bitField0_ & 0x00000008) == 0x00000008)) {
+                output.writeBytes(4, value_);
+            }
+            getUnknownFields().writeTo(output);
+        }
+
+        private int memoizedSerializedSize = -1;
+
+        public int getSerializedSize() {
+            int size = memoizedSerializedSize;
+            if (size != -1) return size;
+
+            size = 0;
+            if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeInt64Size(1, dpid_);
+            }
+            if (((bitField0_ & 0x00000002) == 0x00000002)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeInt64Size(2, number_);
+            }
+            if (((bitField0_ & 0x00000004) == 0x00000004)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeInt32Size(3, status_);
+            }
+            if (((bitField0_ & 0x00000008) == 0x00000008)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeBytesSize(4, value_);
+            }
+            size += getUnknownFields().getSerializedSize();
+            memoizedSerializedSize = size;
+            return size;
+        }
+
+        private static final long serialVersionUID = 0L;
+
+        @java.lang.Override
+        protected java.lang.Object writeReplace()
+                throws java.io.ObjectStreamException {
+            return super.writeReplace();
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
+                com.google.protobuf.ByteString data)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
+                com.google.protobuf.ByteString data,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(byte[] data)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
+                byte[] data,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(java.io.InputStream input)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
+                java.io.InputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseDelimitedFrom(java.io.InputStream input)
+                throws java.io.IOException {
+            return PARSER.parseDelimitedFrom(input);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseDelimitedFrom(
+                java.io.InputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws java.io.IOException {
+            return PARSER.parseDelimitedFrom(input, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
+                com.google.protobuf.CodedInputStream input)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.PortProperty parseFrom(
+                com.google.protobuf.CodedInputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input, extensionRegistry);
+        }
+
+        public static Builder newBuilder() {
+            return Builder.create();
+        }
+
+        public Builder newBuilderForType() {
+            return newBuilder();
+        }
+
+        public static Builder newBuilder(net.onrc.onos.core.datastore.RCProtos.PortProperty prototype) {
+            return newBuilder().mergeFrom(prototype);
+        }
+
+        public Builder toBuilder() {
+            return newBuilder(this);
+        }
+
+        @java.lang.Override
+        protected Builder newBuilderForType(
+                com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+            Builder builder = new Builder(parent);
+            return builder;
+        }
+
+        /**
+         * Protobuf type {@code RCProtos.PortProperty}
+         */
+        public static final class Builder extends
+                com.google.protobuf.GeneratedMessage.Builder<Builder>
+                implements net.onrc.onos.core.datastore.RCProtos.PortPropertyOrBuilder {
+            public static final com.google.protobuf.Descriptors.Descriptor
+            getDescriptor() {
+                return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_descriptor;
+            }
+
+            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+            internalGetFieldAccessorTable() {
+                return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_fieldAccessorTable
+                        .ensureFieldAccessorsInitialized(
+                                net.onrc.onos.core.datastore.RCProtos.PortProperty.class, net.onrc.onos.core.datastore.RCProtos.PortProperty.Builder.class);
+            }
+
+            // Construct using net.onrc.onos.core.datastore.RCProtos.PortProperty.newBuilder()
+            private Builder() {
+                maybeForceBuilderInitialization();
+            }
+
+            private Builder(
+                    com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+                super(parent);
+                maybeForceBuilderInitialization();
+            }
+
+            private void maybeForceBuilderInitialization() {
+                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+                }
+            }
+
+            private static Builder create() {
+                return new Builder();
+            }
+
+            public Builder clear() {
+                super.clear();
+                dpid_ = 0L;
+                bitField0_ = (bitField0_ & ~0x00000001);
+                number_ = 0L;
+                bitField0_ = (bitField0_ & ~0x00000002);
+                status_ = 0;
+                bitField0_ = (bitField0_ & ~0x00000004);
+                value_ = com.google.protobuf.ByteString.EMPTY;
+                bitField0_ = (bitField0_ & ~0x00000008);
+                return this;
+            }
+
+            public Builder clone() {
+                return create().mergeFrom(buildPartial());
+            }
+
+            public com.google.protobuf.Descriptors.Descriptor
+            getDescriptorForType() {
+                return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_PortProperty_descriptor;
+            }
+
+            public net.onrc.onos.core.datastore.RCProtos.PortProperty getDefaultInstanceForType() {
+                return net.onrc.onos.core.datastore.RCProtos.PortProperty.getDefaultInstance();
+            }
+
+            public net.onrc.onos.core.datastore.RCProtos.PortProperty build() {
+                net.onrc.onos.core.datastore.RCProtos.PortProperty result = buildPartial();
+                if (!result.isInitialized()) {
+                    throw newUninitializedMessageException(result);
+                }
+                return result;
+            }
+
+            public net.onrc.onos.core.datastore.RCProtos.PortProperty buildPartial() {
+                net.onrc.onos.core.datastore.RCProtos.PortProperty result = new net.onrc.onos.core.datastore.RCProtos.PortProperty(this);
+                int from_bitField0_ = bitField0_;
+                int to_bitField0_ = 0;
+                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+                    to_bitField0_ |= 0x00000001;
+                }
+                result.dpid_ = dpid_;
+                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+                    to_bitField0_ |= 0x00000002;
+                }
+                result.number_ = number_;
+                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+                    to_bitField0_ |= 0x00000004;
+                }
+                result.status_ = status_;
+                if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
+                    to_bitField0_ |= 0x00000008;
+                }
+                result.value_ = value_;
+                result.bitField0_ = to_bitField0_;
+                onBuilt();
+                return result;
+            }
+
+            public Builder mergeFrom(com.google.protobuf.Message other) {
+                if (other instanceof net.onrc.onos.core.datastore.RCProtos.PortProperty) {
+                    return mergeFrom((net.onrc.onos.core.datastore.RCProtos.PortProperty) other);
+                } else {
+                    super.mergeFrom(other);
+                    return this;
+                }
+            }
+
+            public Builder mergeFrom(net.onrc.onos.core.datastore.RCProtos.PortProperty other) {
+                if (other == net.onrc.onos.core.datastore.RCProtos.PortProperty.getDefaultInstance())
+                    return this;
+                if (other.hasDpid()) {
+                    setDpid(other.getDpid());
+                }
+                if (other.hasNumber()) {
+                    setNumber(other.getNumber());
+                }
+                if (other.hasStatus()) {
+                    setStatus(other.getStatus());
+                }
+                if (other.hasValue()) {
+                    setValue(other.getValue());
+                }
+                this.mergeUnknownFields(other.getUnknownFields());
+                return this;
+            }
+
+            public final boolean isInitialized() {
+                if (!hasDpid()) {
+
+                    return false;
+                }
+                if (!hasNumber()) {
+
+                    return false;
+                }
+                if (!hasStatus()) {
+
+                    return false;
+                }
+                return true;
+            }
+
+            public Builder mergeFrom(
+                    com.google.protobuf.CodedInputStream input,
+                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                    throws java.io.IOException {
+                net.onrc.onos.core.datastore.RCProtos.PortProperty parsedMessage = null;
+                try {
+                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+                    parsedMessage = (net.onrc.onos.core.datastore.RCProtos.PortProperty) e.getUnfinishedMessage();
+                    throw e;
+                } finally {
+                    if (parsedMessage != null) {
+                        mergeFrom(parsedMessage);
+                    }
+                }
+                return this;
+            }
+
+            private int bitField0_;
+
+            // required int64 dpid = 1;
+            private long dpid_;
+
+            /**
+             * <code>required int64 dpid = 1;</code>
+             */
+            public boolean hasDpid() {
+                return ((bitField0_ & 0x00000001) == 0x00000001);
+            }
+
+            /**
+             * <code>required int64 dpid = 1;</code>
+             */
+            public long getDpid() {
+                return dpid_;
+            }
+
+            /**
+             * <code>required int64 dpid = 1;</code>
+             */
+            public Builder setDpid(long value) {
+                bitField0_ |= 0x00000001;
+                dpid_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required int64 dpid = 1;</code>
+             */
+            public Builder clearDpid() {
+                bitField0_ = (bitField0_ & ~0x00000001);
+                dpid_ = 0L;
+                onChanged();
+                return this;
+            }
+
+            // required int64 number = 2;
+            private long number_;
+
+            /**
+             * <code>required int64 number = 2;</code>
+             */
+            public boolean hasNumber() {
+                return ((bitField0_ & 0x00000002) == 0x00000002);
+            }
+
+            /**
+             * <code>required int64 number = 2;</code>
+             */
+            public long getNumber() {
+                return number_;
+            }
+
+            /**
+             * <code>required int64 number = 2;</code>
+             */
+            public Builder setNumber(long value) {
+                bitField0_ |= 0x00000002;
+                number_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required int64 number = 2;</code>
+             */
+            public Builder clearNumber() {
+                bitField0_ = (bitField0_ & ~0x00000002);
+                number_ = 0L;
+                onChanged();
+                return this;
+            }
+
+            // required int32 status = 3;
+            private int status_;
+
+            /**
+             * <code>required int32 status = 3;</code>
+             */
+            public boolean hasStatus() {
+                return ((bitField0_ & 0x00000004) == 0x00000004);
+            }
+
+            /**
+             * <code>required int32 status = 3;</code>
+             */
+            public int getStatus() {
+                return status_;
+            }
+
+            /**
+             * <code>required int32 status = 3;</code>
+             */
+            public Builder setStatus(int value) {
+                bitField0_ |= 0x00000004;
+                status_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required int32 status = 3;</code>
+             */
+            public Builder clearStatus() {
+                bitField0_ = (bitField0_ & ~0x00000004);
+                status_ = 0;
+                onChanged();
+                return this;
+            }
+
+            // optional bytes value = 4;
+            private com.google.protobuf.ByteString value_ = com.google.protobuf.ByteString.EMPTY;
+
+            /**
+             * <code>optional bytes value = 4;</code>
+             */
+            public boolean hasValue() {
+                return ((bitField0_ & 0x00000008) == 0x00000008);
+            }
+
+            /**
+             * <code>optional bytes value = 4;</code>
+             */
+            public com.google.protobuf.ByteString getValue() {
+                return value_;
+            }
+
+            /**
+             * <code>optional bytes value = 4;</code>
+             */
+            public Builder setValue(com.google.protobuf.ByteString value) {
+                if (value == null) {
+                    throw new NullPointerException();
+                }
+                bitField0_ |= 0x00000008;
+                value_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>optional bytes value = 4;</code>
+             */
+            public Builder clearValue() {
+                bitField0_ = (bitField0_ & ~0x00000008);
+                value_ = getDefaultInstance().getValue();
+                onChanged();
+                return this;
+            }
+
+            // @@protoc_insertion_point(builder_scope:RCProtos.PortProperty)
+        }
+
+        static {
+            defaultInstance = new PortProperty(true);
+            defaultInstance.initFields();
+        }
+
+        // @@protoc_insertion_point(class_scope:RCProtos.PortProperty)
     }
 
-    public static com.google.protobuf.Parser<LinkProperty> PARSER =
-        new com.google.protobuf.AbstractParser<LinkProperty>() {
-      public LinkProperty parsePartialFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws com.google.protobuf.InvalidProtocolBufferException {
-        return new LinkProperty(input, extensionRegistry);
-      }
-    };
+    public interface LinkPropertyOrBuilder
+            extends com.google.protobuf.MessageOrBuilder {
 
-    @java.lang.Override
-    public com.google.protobuf.Parser<LinkProperty> getParserForType() {
-      return PARSER;
+        // required bytes srcSwId = 1;
+
+        /**
+         * <code>required bytes srcSwId = 1;</code>
+         */
+        boolean hasSrcSwId();
+
+        /**
+         * <code>required bytes srcSwId = 1;</code>
+         */
+        com.google.protobuf.ByteString getSrcSwId();
+
+        // required bytes srcPortId = 2;
+
+        /**
+         * <code>required bytes srcPortId = 2;</code>
+         */
+        boolean hasSrcPortId();
+
+        /**
+         * <code>required bytes srcPortId = 2;</code>
+         */
+        com.google.protobuf.ByteString getSrcPortId();
+
+        // required bytes dstSwId = 3;
+
+        /**
+         * <code>required bytes dstSwId = 3;</code>
+         */
+        boolean hasDstSwId();
+
+        /**
+         * <code>required bytes dstSwId = 3;</code>
+         */
+        com.google.protobuf.ByteString getDstSwId();
+
+        // required bytes dstPortId = 4;
+
+        /**
+         * <code>required bytes dstPortId = 4;</code>
+         */
+        boolean hasDstPortId();
+
+        /**
+         * <code>required bytes dstPortId = 4;</code>
+         */
+        com.google.protobuf.ByteString getDstPortId();
+
+        // required int32 status = 5;
+
+        /**
+         * <code>required int32 status = 5;</code>
+         */
+        boolean hasStatus();
+
+        /**
+         * <code>required int32 status = 5;</code>
+         */
+        int getStatus();
+
+        // optional bytes value = 6;
+
+        /**
+         * <code>optional bytes value = 6;</code>
+         */
+        boolean hasValue();
+
+        /**
+         * <code>optional bytes value = 6;</code>
+         */
+        com.google.protobuf.ByteString getValue();
     }
 
-    private int bitField0_;
-    // required bytes srcSwId = 1;
-    public static final int SRCSWID_FIELD_NUMBER = 1;
-    private com.google.protobuf.ByteString srcSwId_;
-    /**
-     * <code>required bytes srcSwId = 1;</code>
-     */
-    public boolean hasSrcSwId() {
-      return ((bitField0_ & 0x00000001) == 0x00000001);
-    }
-    /**
-     * <code>required bytes srcSwId = 1;</code>
-     */
-    public com.google.protobuf.ByteString getSrcSwId() {
-      return srcSwId_;
-    }
-
-    // required bytes srcPortId = 2;
-    public static final int SRCPORTID_FIELD_NUMBER = 2;
-    private com.google.protobuf.ByteString srcPortId_;
-    /**
-     * <code>required bytes srcPortId = 2;</code>
-     */
-    public boolean hasSrcPortId() {
-      return ((bitField0_ & 0x00000002) == 0x00000002);
-    }
-    /**
-     * <code>required bytes srcPortId = 2;</code>
-     */
-    public com.google.protobuf.ByteString getSrcPortId() {
-      return srcPortId_;
-    }
-
-    // required bytes dstSwId = 3;
-    public static final int DSTSWID_FIELD_NUMBER = 3;
-    private com.google.protobuf.ByteString dstSwId_;
-    /**
-     * <code>required bytes dstSwId = 3;</code>
-     */
-    public boolean hasDstSwId() {
-      return ((bitField0_ & 0x00000004) == 0x00000004);
-    }
-    /**
-     * <code>required bytes dstSwId = 3;</code>
-     */
-    public com.google.protobuf.ByteString getDstSwId() {
-      return dstSwId_;
-    }
-
-    // required bytes dstPortId = 4;
-    public static final int DSTPORTID_FIELD_NUMBER = 4;
-    private com.google.protobuf.ByteString dstPortId_;
-    /**
-     * <code>required bytes dstPortId = 4;</code>
-     */
-    public boolean hasDstPortId() {
-      return ((bitField0_ & 0x00000008) == 0x00000008);
-    }
-    /**
-     * <code>required bytes dstPortId = 4;</code>
-     */
-    public com.google.protobuf.ByteString getDstPortId() {
-      return dstPortId_;
-    }
-
-    // required int32 status = 5;
-    public static final int STATUS_FIELD_NUMBER = 5;
-    private int status_;
-    /**
-     * <code>required int32 status = 5;</code>
-     */
-    public boolean hasStatus() {
-      return ((bitField0_ & 0x00000010) == 0x00000010);
-    }
-    /**
-     * <code>required int32 status = 5;</code>
-     */
-    public int getStatus() {
-      return status_;
-    }
-
-    // optional bytes value = 6;
-    public static final int VALUE_FIELD_NUMBER = 6;
-    private com.google.protobuf.ByteString value_;
-    /**
-     * <code>optional bytes value = 6;</code>
-     */
-    public boolean hasValue() {
-      return ((bitField0_ & 0x00000020) == 0x00000020);
-    }
-    /**
-     * <code>optional bytes value = 6;</code>
-     */
-    public com.google.protobuf.ByteString getValue() {
-      return value_;
-    }
-
-    private void initFields() {
-      srcSwId_ = com.google.protobuf.ByteString.EMPTY;
-      srcPortId_ = com.google.protobuf.ByteString.EMPTY;
-      dstSwId_ = com.google.protobuf.ByteString.EMPTY;
-      dstPortId_ = com.google.protobuf.ByteString.EMPTY;
-      status_ = 0;
-      value_ = com.google.protobuf.ByteString.EMPTY;
-    }
-    private byte memoizedIsInitialized = -1;
-    public final boolean isInitialized() {
-      byte isInitialized = memoizedIsInitialized;
-      if (isInitialized != -1) return isInitialized == 1;
-
-      if (!hasSrcSwId()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      if (!hasSrcPortId()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      if (!hasDstSwId()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      if (!hasDstPortId()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      if (!hasStatus()) {
-        memoizedIsInitialized = 0;
-        return false;
-      }
-      memoizedIsInitialized = 1;
-      return true;
-    }
-
-    public void writeTo(com.google.protobuf.CodedOutputStream output)
-                        throws java.io.IOException {
-      getSerializedSize();
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        output.writeBytes(1, srcSwId_);
-      }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        output.writeBytes(2, srcPortId_);
-      }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        output.writeBytes(3, dstSwId_);
-      }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
-        output.writeBytes(4, dstPortId_);
-      }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
-        output.writeInt32(5, status_);
-      }
-      if (((bitField0_ & 0x00000020) == 0x00000020)) {
-        output.writeBytes(6, value_);
-      }
-      getUnknownFields().writeTo(output);
-    }
-
-    private int memoizedSerializedSize = -1;
-    public int getSerializedSize() {
-      int size = memoizedSerializedSize;
-      if (size != -1) return size;
-
-      size = 0;
-      if (((bitField0_ & 0x00000001) == 0x00000001)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(1, srcSwId_);
-      }
-      if (((bitField0_ & 0x00000002) == 0x00000002)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(2, srcPortId_);
-      }
-      if (((bitField0_ & 0x00000004) == 0x00000004)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(3, dstSwId_);
-      }
-      if (((bitField0_ & 0x00000008) == 0x00000008)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(4, dstPortId_);
-      }
-      if (((bitField0_ & 0x00000010) == 0x00000010)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeInt32Size(5, status_);
-      }
-      if (((bitField0_ & 0x00000020) == 0x00000020)) {
-        size += com.google.protobuf.CodedOutputStream
-          .computeBytesSize(6, value_);
-      }
-      size += getUnknownFields().getSerializedSize();
-      memoizedSerializedSize = size;
-      return size;
-    }
-
-    private static final long serialVersionUID = 0L;
-    @java.lang.Override
-    protected java.lang.Object writeReplace()
-        throws java.io.ObjectStreamException {
-      return super.writeReplace();
-    }
-
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
-        com.google.protobuf.ByteString data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
-        com.google.protobuf.ByteString data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(byte[] data)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
-        byte[] data,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws com.google.protobuf.InvalidProtocolBufferException {
-      return PARSER.parseFrom(data, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseDelimitedFrom(java.io.InputStream input)
-        throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseDelimitedFrom(
-        java.io.InputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return PARSER.parseDelimitedFrom(input, extensionRegistry);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
-        com.google.protobuf.CodedInputStream input)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input);
-    }
-    public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
-        com.google.protobuf.CodedInputStream input,
-        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-        throws java.io.IOException {
-      return PARSER.parseFrom(input, extensionRegistry);
-    }
-
-    public static Builder newBuilder() { return Builder.create(); }
-    public Builder newBuilderForType() { return newBuilder(); }
-    public static Builder newBuilder(net.onrc.onos.core.datastore.RCProtos.LinkProperty prototype) {
-      return newBuilder().mergeFrom(prototype);
-    }
-    public Builder toBuilder() { return newBuilder(this); }
-
-    @java.lang.Override
-    protected Builder newBuilderForType(
-        com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-      Builder builder = new Builder(parent);
-      return builder;
-    }
     /**
      * Protobuf type {@code RCProtos.LinkProperty}
      */
-    public static final class Builder extends
-        com.google.protobuf.GeneratedMessage.Builder<Builder>
-       implements net.onrc.onos.core.datastore.RCProtos.LinkPropertyOrBuilder {
-      public static final com.google.protobuf.Descriptors.Descriptor
-          getDescriptor() {
-        return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_descriptor;
-      }
+    public static final class LinkProperty extends
+            com.google.protobuf.GeneratedMessage
+            implements LinkPropertyOrBuilder {
+        // Use LinkProperty.newBuilder() to construct.
+        private LinkProperty(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
+            super(builder);
+            this.unknownFields = builder.getUnknownFields();
+        }
 
-      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
-          internalGetFieldAccessorTable() {
-        return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_fieldAccessorTable
-            .ensureFieldAccessorsInitialized(
-                net.onrc.onos.core.datastore.RCProtos.LinkProperty.class, net.onrc.onos.core.datastore.RCProtos.LinkProperty.Builder.class);
-      }
+        private LinkProperty(boolean noInit) {
+            this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance();
+        }
 
-      // Construct using net.onrc.onos.core.datastore.RCProtos.LinkProperty.newBuilder()
-      private Builder() {
-        maybeForceBuilderInitialization();
-      }
+        private static final LinkProperty defaultInstance;
 
-      private Builder(
-          com.google.protobuf.GeneratedMessage.BuilderParent parent) {
-        super(parent);
-        maybeForceBuilderInitialization();
-      }
-      private void maybeForceBuilderInitialization() {
-        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+        public static LinkProperty getDefaultInstance() {
+            return defaultInstance;
         }
-      }
-      private static Builder create() {
-        return new Builder();
-      }
 
-      public Builder clear() {
-        super.clear();
-        srcSwId_ = com.google.protobuf.ByteString.EMPTY;
-        bitField0_ = (bitField0_ & ~0x00000001);
-        srcPortId_ = com.google.protobuf.ByteString.EMPTY;
-        bitField0_ = (bitField0_ & ~0x00000002);
-        dstSwId_ = com.google.protobuf.ByteString.EMPTY;
-        bitField0_ = (bitField0_ & ~0x00000004);
-        dstPortId_ = com.google.protobuf.ByteString.EMPTY;
-        bitField0_ = (bitField0_ & ~0x00000008);
-        status_ = 0;
-        bitField0_ = (bitField0_ & ~0x00000010);
-        value_ = com.google.protobuf.ByteString.EMPTY;
-        bitField0_ = (bitField0_ & ~0x00000020);
-        return this;
-      }
+        public LinkProperty getDefaultInstanceForType() {
+            return defaultInstance;
+        }
 
-      public Builder clone() {
-        return create().mergeFrom(buildPartial());
-      }
+        private final com.google.protobuf.UnknownFieldSet unknownFields;
 
-      public com.google.protobuf.Descriptors.Descriptor
-          getDescriptorForType() {
-        return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_descriptor;
-      }
+        @java.lang.Override
+        public final com.google.protobuf.UnknownFieldSet
+        getUnknownFields() {
+            return this.unknownFields;
+        }
 
-      public net.onrc.onos.core.datastore.RCProtos.LinkProperty getDefaultInstanceForType() {
-        return net.onrc.onos.core.datastore.RCProtos.LinkProperty.getDefaultInstance();
-      }
+        private LinkProperty(
+                com.google.protobuf.CodedInputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            initFields();
+            int mutable_bitField0_ = 0;
+            com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+                    com.google.protobuf.UnknownFieldSet.newBuilder();
+            try {
+                boolean done = false;
+                while (!done) {
+                    int tag = input.readTag();
+                    switch (tag) {
+                        case 0:
+                            done = true;
+                            break;
+                        default: {
+                            if (!parseUnknownField(input, unknownFields,
+                                    extensionRegistry, tag)) {
+                                done = true;
+                            }
+                            break;
+                        }
+                        case 10: {
+                            bitField0_ |= 0x00000001;
+                            srcSwId_ = input.readBytes();
+                            break;
+                        }
+                        case 18: {
+                            bitField0_ |= 0x00000002;
+                            srcPortId_ = input.readBytes();
+                            break;
+                        }
+                        case 26: {
+                            bitField0_ |= 0x00000004;
+                            dstSwId_ = input.readBytes();
+                            break;
+                        }
+                        case 34: {
+                            bitField0_ |= 0x00000008;
+                            dstPortId_ = input.readBytes();
+                            break;
+                        }
+                        case 40: {
+                            bitField0_ |= 0x00000010;
+                            status_ = input.readInt32();
+                            break;
+                        }
+                        case 50: {
+                            bitField0_ |= 0x00000020;
+                            value_ = input.readBytes();
+                            break;
+                        }
+                    }
+                }
+            } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+                throw e.setUnfinishedMessage(this);
+            } catch (java.io.IOException e) {
+                throw new com.google.protobuf.InvalidProtocolBufferException(
+                        e.getMessage()).setUnfinishedMessage(this);
+            } finally {
+                this.unknownFields = unknownFields.build();
+                makeExtensionsImmutable();
+            }
+        }
 
-      public net.onrc.onos.core.datastore.RCProtos.LinkProperty build() {
-        net.onrc.onos.core.datastore.RCProtos.LinkProperty result = buildPartial();
-        if (!result.isInitialized()) {
-          throw newUninitializedMessageException(result);
+        public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+            return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_descriptor;
         }
-        return result;
-      }
 
-      public net.onrc.onos.core.datastore.RCProtos.LinkProperty buildPartial() {
-        net.onrc.onos.core.datastore.RCProtos.LinkProperty result = new net.onrc.onos.core.datastore.RCProtos.LinkProperty(this);
-        int from_bitField0_ = bitField0_;
-        int to_bitField0_ = 0;
-        if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
-          to_bitField0_ |= 0x00000001;
+        protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+            return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_fieldAccessorTable
+                    .ensureFieldAccessorsInitialized(
+                            net.onrc.onos.core.datastore.RCProtos.LinkProperty.class, net.onrc.onos.core.datastore.RCProtos.LinkProperty.Builder.class);
         }
-        result.srcSwId_ = srcSwId_;
-        if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
-          to_bitField0_ |= 0x00000002;
-        }
-        result.srcPortId_ = srcPortId_;
-        if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
-          to_bitField0_ |= 0x00000004;
-        }
-        result.dstSwId_ = dstSwId_;
-        if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
-          to_bitField0_ |= 0x00000008;
-        }
-        result.dstPortId_ = dstPortId_;
-        if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
-          to_bitField0_ |= 0x00000010;
-        }
-        result.status_ = status_;
-        if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
-          to_bitField0_ |= 0x00000020;
-        }
-        result.value_ = value_;
-        result.bitField0_ = to_bitField0_;
-        onBuilt();
-        return result;
-      }
 
-      public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof net.onrc.onos.core.datastore.RCProtos.LinkProperty) {
-          return mergeFrom((net.onrc.onos.core.datastore.RCProtos.LinkProperty)other);
-        } else {
-          super.mergeFrom(other);
-          return this;
-        }
-      }
+        public static com.google.protobuf.Parser<LinkProperty> PARSER =
+                new com.google.protobuf.AbstractParser<LinkProperty>() {
+                    public LinkProperty parsePartialFrom(
+                            com.google.protobuf.CodedInputStream input,
+                            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                            throws com.google.protobuf.InvalidProtocolBufferException {
+                        return new LinkProperty(input, extensionRegistry);
+                    }
+                };
 
-      public Builder mergeFrom(net.onrc.onos.core.datastore.RCProtos.LinkProperty other) {
-        if (other == net.onrc.onos.core.datastore.RCProtos.LinkProperty.getDefaultInstance()) return this;
-        if (other.hasSrcSwId()) {
-          setSrcSwId(other.getSrcSwId());
+        @java.lang.Override
+        public com.google.protobuf.Parser<LinkProperty> getParserForType() {
+            return PARSER;
         }
-        if (other.hasSrcPortId()) {
-          setSrcPortId(other.getSrcPortId());
-        }
-        if (other.hasDstSwId()) {
-          setDstSwId(other.getDstSwId());
-        }
-        if (other.hasDstPortId()) {
-          setDstPortId(other.getDstPortId());
-        }
-        if (other.hasStatus()) {
-          setStatus(other.getStatus());
-        }
-        if (other.hasValue()) {
-          setValue(other.getValue());
-        }
-        this.mergeUnknownFields(other.getUnknownFields());
-        return this;
-      }
 
-      public final boolean isInitialized() {
-        if (!hasSrcSwId()) {
-          
-          return false;
+        private int bitField0_;
+        // required bytes srcSwId = 1;
+        public static final int SRCSWID_FIELD_NUMBER = 1;
+        private com.google.protobuf.ByteString srcSwId_;
+
+        /**
+         * <code>required bytes srcSwId = 1;</code>
+         */
+        public boolean hasSrcSwId() {
+            return ((bitField0_ & 0x00000001) == 0x00000001);
         }
-        if (!hasSrcPortId()) {
-          
-          return false;
+
+        /**
+         * <code>required bytes srcSwId = 1;</code>
+         */
+        public com.google.protobuf.ByteString getSrcSwId() {
+            return srcSwId_;
         }
-        if (!hasDstSwId()) {
-          
-          return false;
+
+        // required bytes srcPortId = 2;
+        public static final int SRCPORTID_FIELD_NUMBER = 2;
+        private com.google.protobuf.ByteString srcPortId_;
+
+        /**
+         * <code>required bytes srcPortId = 2;</code>
+         */
+        public boolean hasSrcPortId() {
+            return ((bitField0_ & 0x00000002) == 0x00000002);
         }
-        if (!hasDstPortId()) {
-          
-          return false;
+
+        /**
+         * <code>required bytes srcPortId = 2;</code>
+         */
+        public com.google.protobuf.ByteString getSrcPortId() {
+            return srcPortId_;
         }
-        if (!hasStatus()) {
-          
-          return false;
+
+        // required bytes dstSwId = 3;
+        public static final int DSTSWID_FIELD_NUMBER = 3;
+        private com.google.protobuf.ByteString dstSwId_;
+
+        /**
+         * <code>required bytes dstSwId = 3;</code>
+         */
+        public boolean hasDstSwId() {
+            return ((bitField0_ & 0x00000004) == 0x00000004);
         }
-        return true;
-      }
 
-      public Builder mergeFrom(
-          com.google.protobuf.CodedInputStream input,
-          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
-          throws java.io.IOException {
-        net.onrc.onos.core.datastore.RCProtos.LinkProperty parsedMessage = null;
-        try {
-          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
-        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (net.onrc.onos.core.datastore.RCProtos.LinkProperty) e.getUnfinishedMessage();
-          throw e;
-        } finally {
-          if (parsedMessage != null) {
-            mergeFrom(parsedMessage);
-          }
+        /**
+         * <code>required bytes dstSwId = 3;</code>
+         */
+        public com.google.protobuf.ByteString getDstSwId() {
+            return dstSwId_;
         }
-        return this;
-      }
-      private int bitField0_;
 
-      // required bytes srcSwId = 1;
-      private com.google.protobuf.ByteString srcSwId_ = com.google.protobuf.ByteString.EMPTY;
-      /**
-       * <code>required bytes srcSwId = 1;</code>
-       */
-      public boolean hasSrcSwId() {
-        return ((bitField0_ & 0x00000001) == 0x00000001);
-      }
-      /**
-       * <code>required bytes srcSwId = 1;</code>
-       */
-      public com.google.protobuf.ByteString getSrcSwId() {
-        return srcSwId_;
-      }
-      /**
-       * <code>required bytes srcSwId = 1;</code>
-       */
-      public Builder setSrcSwId(com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  bitField0_ |= 0x00000001;
-        srcSwId_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required bytes srcSwId = 1;</code>
-       */
-      public Builder clearSrcSwId() {
-        bitField0_ = (bitField0_ & ~0x00000001);
-        srcSwId_ = getDefaultInstance().getSrcSwId();
-        onChanged();
-        return this;
-      }
+        // required bytes dstPortId = 4;
+        public static final int DSTPORTID_FIELD_NUMBER = 4;
+        private com.google.protobuf.ByteString dstPortId_;
 
-      // required bytes srcPortId = 2;
-      private com.google.protobuf.ByteString srcPortId_ = com.google.protobuf.ByteString.EMPTY;
-      /**
-       * <code>required bytes srcPortId = 2;</code>
-       */
-      public boolean hasSrcPortId() {
-        return ((bitField0_ & 0x00000002) == 0x00000002);
-      }
-      /**
-       * <code>required bytes srcPortId = 2;</code>
-       */
-      public com.google.protobuf.ByteString getSrcPortId() {
-        return srcPortId_;
-      }
-      /**
-       * <code>required bytes srcPortId = 2;</code>
-       */
-      public Builder setSrcPortId(com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  bitField0_ |= 0x00000002;
-        srcPortId_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required bytes srcPortId = 2;</code>
-       */
-      public Builder clearSrcPortId() {
-        bitField0_ = (bitField0_ & ~0x00000002);
-        srcPortId_ = getDefaultInstance().getSrcPortId();
-        onChanged();
-        return this;
-      }
+        /**
+         * <code>required bytes dstPortId = 4;</code>
+         */
+        public boolean hasDstPortId() {
+            return ((bitField0_ & 0x00000008) == 0x00000008);
+        }
 
-      // required bytes dstSwId = 3;
-      private com.google.protobuf.ByteString dstSwId_ = com.google.protobuf.ByteString.EMPTY;
-      /**
-       * <code>required bytes dstSwId = 3;</code>
-       */
-      public boolean hasDstSwId() {
-        return ((bitField0_ & 0x00000004) == 0x00000004);
-      }
-      /**
-       * <code>required bytes dstSwId = 3;</code>
-       */
-      public com.google.protobuf.ByteString getDstSwId() {
-        return dstSwId_;
-      }
-      /**
-       * <code>required bytes dstSwId = 3;</code>
-       */
-      public Builder setDstSwId(com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  bitField0_ |= 0x00000004;
-        dstSwId_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required bytes dstSwId = 3;</code>
-       */
-      public Builder clearDstSwId() {
-        bitField0_ = (bitField0_ & ~0x00000004);
-        dstSwId_ = getDefaultInstance().getDstSwId();
-        onChanged();
-        return this;
-      }
+        /**
+         * <code>required bytes dstPortId = 4;</code>
+         */
+        public com.google.protobuf.ByteString getDstPortId() {
+            return dstPortId_;
+        }
 
-      // required bytes dstPortId = 4;
-      private com.google.protobuf.ByteString dstPortId_ = com.google.protobuf.ByteString.EMPTY;
-      /**
-       * <code>required bytes dstPortId = 4;</code>
-       */
-      public boolean hasDstPortId() {
-        return ((bitField0_ & 0x00000008) == 0x00000008);
-      }
-      /**
-       * <code>required bytes dstPortId = 4;</code>
-       */
-      public com.google.protobuf.ByteString getDstPortId() {
-        return dstPortId_;
-      }
-      /**
-       * <code>required bytes dstPortId = 4;</code>
-       */
-      public Builder setDstPortId(com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  bitField0_ |= 0x00000008;
-        dstPortId_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required bytes dstPortId = 4;</code>
-       */
-      public Builder clearDstPortId() {
-        bitField0_ = (bitField0_ & ~0x00000008);
-        dstPortId_ = getDefaultInstance().getDstPortId();
-        onChanged();
-        return this;
-      }
+        // required int32 status = 5;
+        public static final int STATUS_FIELD_NUMBER = 5;
+        private int status_;
 
-      // required int32 status = 5;
-      private int status_ ;
-      /**
-       * <code>required int32 status = 5;</code>
-       */
-      public boolean hasStatus() {
-        return ((bitField0_ & 0x00000010) == 0x00000010);
-      }
-      /**
-       * <code>required int32 status = 5;</code>
-       */
-      public int getStatus() {
-        return status_;
-      }
-      /**
-       * <code>required int32 status = 5;</code>
-       */
-      public Builder setStatus(int value) {
-        bitField0_ |= 0x00000010;
-        status_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>required int32 status = 5;</code>
-       */
-      public Builder clearStatus() {
-        bitField0_ = (bitField0_ & ~0x00000010);
-        status_ = 0;
-        onChanged();
-        return this;
-      }
+        /**
+         * <code>required int32 status = 5;</code>
+         */
+        public boolean hasStatus() {
+            return ((bitField0_ & 0x00000010) == 0x00000010);
+        }
 
-      // optional bytes value = 6;
-      private com.google.protobuf.ByteString value_ = com.google.protobuf.ByteString.EMPTY;
-      /**
-       * <code>optional bytes value = 6;</code>
-       */
-      public boolean hasValue() {
-        return ((bitField0_ & 0x00000020) == 0x00000020);
-      }
-      /**
-       * <code>optional bytes value = 6;</code>
-       */
-      public com.google.protobuf.ByteString getValue() {
-        return value_;
-      }
-      /**
-       * <code>optional bytes value = 6;</code>
-       */
-      public Builder setValue(com.google.protobuf.ByteString value) {
-        if (value == null) {
-    throw new NullPointerException();
-  }
-  bitField0_ |= 0x00000020;
-        value_ = value;
-        onChanged();
-        return this;
-      }
-      /**
-       * <code>optional bytes value = 6;</code>
-       */
-      public Builder clearValue() {
-        bitField0_ = (bitField0_ & ~0x00000020);
-        value_ = getDefaultInstance().getValue();
-        onChanged();
-        return this;
-      }
+        /**
+         * <code>required int32 status = 5;</code>
+         */
+        public int getStatus() {
+            return status_;
+        }
 
-      // @@protoc_insertion_point(builder_scope:RCProtos.LinkProperty)
+        // optional bytes value = 6;
+        public static final int VALUE_FIELD_NUMBER = 6;
+        private com.google.protobuf.ByteString value_;
+
+        /**
+         * <code>optional bytes value = 6;</code>
+         */
+        public boolean hasValue() {
+            return ((bitField0_ & 0x00000020) == 0x00000020);
+        }
+
+        /**
+         * <code>optional bytes value = 6;</code>
+         */
+        public com.google.protobuf.ByteString getValue() {
+            return value_;
+        }
+
+        private void initFields() {
+            srcSwId_ = com.google.protobuf.ByteString.EMPTY;
+            srcPortId_ = com.google.protobuf.ByteString.EMPTY;
+            dstSwId_ = com.google.protobuf.ByteString.EMPTY;
+            dstPortId_ = com.google.protobuf.ByteString.EMPTY;
+            status_ = 0;
+            value_ = com.google.protobuf.ByteString.EMPTY;
+        }
+
+        private byte memoizedIsInitialized = -1;
+
+        public final boolean isInitialized() {
+            byte isInitialized = memoizedIsInitialized;
+            if (isInitialized != -1) return isInitialized == 1;
+
+            if (!hasSrcSwId()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            if (!hasSrcPortId()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            if (!hasDstSwId()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            if (!hasDstPortId()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            if (!hasStatus()) {
+                memoizedIsInitialized = 0;
+                return false;
+            }
+            memoizedIsInitialized = 1;
+            return true;
+        }
+
+        public void writeTo(com.google.protobuf.CodedOutputStream output)
+                throws java.io.IOException {
+            getSerializedSize();
+            if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                output.writeBytes(1, srcSwId_);
+            }
+            if (((bitField0_ & 0x00000002) == 0x00000002)) {
+                output.writeBytes(2, srcPortId_);
+            }
+            if (((bitField0_ & 0x00000004) == 0x00000004)) {
+                output.writeBytes(3, dstSwId_);
+            }
+            if (((bitField0_ & 0x00000008) == 0x00000008)) {
+                output.writeBytes(4, dstPortId_);
+            }
+            if (((bitField0_ & 0x00000010) == 0x00000010)) {
+                output.writeInt32(5, status_);
+            }
+            if (((bitField0_ & 0x00000020) == 0x00000020)) {
+                output.writeBytes(6, value_);
+            }
+            getUnknownFields().writeTo(output);
+        }
+
+        private int memoizedSerializedSize = -1;
+
+        public int getSerializedSize() {
+            int size = memoizedSerializedSize;
+            if (size != -1) return size;
+
+            size = 0;
+            if (((bitField0_ & 0x00000001) == 0x00000001)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeBytesSize(1, srcSwId_);
+            }
+            if (((bitField0_ & 0x00000002) == 0x00000002)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeBytesSize(2, srcPortId_);
+            }
+            if (((bitField0_ & 0x00000004) == 0x00000004)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeBytesSize(3, dstSwId_);
+            }
+            if (((bitField0_ & 0x00000008) == 0x00000008)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeBytesSize(4, dstPortId_);
+            }
+            if (((bitField0_ & 0x00000010) == 0x00000010)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeInt32Size(5, status_);
+            }
+            if (((bitField0_ & 0x00000020) == 0x00000020)) {
+                size += com.google.protobuf.CodedOutputStream
+                        .computeBytesSize(6, value_);
+            }
+            size += getUnknownFields().getSerializedSize();
+            memoizedSerializedSize = size;
+            return size;
+        }
+
+        private static final long serialVersionUID = 0L;
+
+        @java.lang.Override
+        protected java.lang.Object writeReplace()
+                throws java.io.ObjectStreamException {
+            return super.writeReplace();
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
+                com.google.protobuf.ByteString data)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
+                com.google.protobuf.ByteString data,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(byte[] data)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
+                byte[] data,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws com.google.protobuf.InvalidProtocolBufferException {
+            return PARSER.parseFrom(data, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(java.io.InputStream input)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
+                java.io.InputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseDelimitedFrom(java.io.InputStream input)
+                throws java.io.IOException {
+            return PARSER.parseDelimitedFrom(input);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseDelimitedFrom(
+                java.io.InputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws java.io.IOException {
+            return PARSER.parseDelimitedFrom(input, extensionRegistry);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
+                com.google.protobuf.CodedInputStream input)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input);
+        }
+
+        public static net.onrc.onos.core.datastore.RCProtos.LinkProperty parseFrom(
+                com.google.protobuf.CodedInputStream input,
+                com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                throws java.io.IOException {
+            return PARSER.parseFrom(input, extensionRegistry);
+        }
+
+        public static Builder newBuilder() {
+            return Builder.create();
+        }
+
+        public Builder newBuilderForType() {
+            return newBuilder();
+        }
+
+        public static Builder newBuilder(net.onrc.onos.core.datastore.RCProtos.LinkProperty prototype) {
+            return newBuilder().mergeFrom(prototype);
+        }
+
+        public Builder toBuilder() {
+            return newBuilder(this);
+        }
+
+        @java.lang.Override
+        protected Builder newBuilderForType(
+                com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+            Builder builder = new Builder(parent);
+            return builder;
+        }
+
+        /**
+         * Protobuf type {@code RCProtos.LinkProperty}
+         */
+        public static final class Builder extends
+                com.google.protobuf.GeneratedMessage.Builder<Builder>
+                implements net.onrc.onos.core.datastore.RCProtos.LinkPropertyOrBuilder {
+            public static final com.google.protobuf.Descriptors.Descriptor
+            getDescriptor() {
+                return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_descriptor;
+            }
+
+            protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
+            internalGetFieldAccessorTable() {
+                return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_fieldAccessorTable
+                        .ensureFieldAccessorsInitialized(
+                                net.onrc.onos.core.datastore.RCProtos.LinkProperty.class, net.onrc.onos.core.datastore.RCProtos.LinkProperty.Builder.class);
+            }
+
+            // Construct using net.onrc.onos.core.datastore.RCProtos.LinkProperty.newBuilder()
+            private Builder() {
+                maybeForceBuilderInitialization();
+            }
+
+            private Builder(
+                    com.google.protobuf.GeneratedMessage.BuilderParent parent) {
+                super(parent);
+                maybeForceBuilderInitialization();
+            }
+
+            private void maybeForceBuilderInitialization() {
+                if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
+                }
+            }
+
+            private static Builder create() {
+                return new Builder();
+            }
+
+            public Builder clear() {
+                super.clear();
+                srcSwId_ = com.google.protobuf.ByteString.EMPTY;
+                bitField0_ = (bitField0_ & ~0x00000001);
+                srcPortId_ = com.google.protobuf.ByteString.EMPTY;
+                bitField0_ = (bitField0_ & ~0x00000002);
+                dstSwId_ = com.google.protobuf.ByteString.EMPTY;
+                bitField0_ = (bitField0_ & ~0x00000004);
+                dstPortId_ = com.google.protobuf.ByteString.EMPTY;
+                bitField0_ = (bitField0_ & ~0x00000008);
+                status_ = 0;
+                bitField0_ = (bitField0_ & ~0x00000010);
+                value_ = com.google.protobuf.ByteString.EMPTY;
+                bitField0_ = (bitField0_ & ~0x00000020);
+                return this;
+            }
+
+            public Builder clone() {
+                return create().mergeFrom(buildPartial());
+            }
+
+            public com.google.protobuf.Descriptors.Descriptor
+            getDescriptorForType() {
+                return net.onrc.onos.core.datastore.RCProtos.internal_static_ProtoBuffer_LinkProperty_descriptor;
+            }
+
+            public net.onrc.onos.core.datastore.RCProtos.LinkProperty getDefaultInstanceForType() {
+                return net.onrc.onos.core.datastore.RCProtos.LinkProperty.getDefaultInstance();
+            }
+
+            public net.onrc.onos.core.datastore.RCProtos.LinkProperty build() {
+                net.onrc.onos.core.datastore.RCProtos.LinkProperty result = buildPartial();
+                if (!result.isInitialized()) {
+                    throw newUninitializedMessageException(result);
+                }
+                return result;
+            }
+
+            public net.onrc.onos.core.datastore.RCProtos.LinkProperty buildPartial() {
+                net.onrc.onos.core.datastore.RCProtos.LinkProperty result = new net.onrc.onos.core.datastore.RCProtos.LinkProperty(this);
+                int from_bitField0_ = bitField0_;
+                int to_bitField0_ = 0;
+                if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
+                    to_bitField0_ |= 0x00000001;
+                }
+                result.srcSwId_ = srcSwId_;
+                if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
+                    to_bitField0_ |= 0x00000002;
+                }
+                result.srcPortId_ = srcPortId_;
+                if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
+                    to_bitField0_ |= 0x00000004;
+                }
+                result.dstSwId_ = dstSwId_;
+                if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
+                    to_bitField0_ |= 0x00000008;
+                }
+                result.dstPortId_ = dstPortId_;
+                if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
+                    to_bitField0_ |= 0x00000010;
+                }
+                result.status_ = status_;
+                if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
+                    to_bitField0_ |= 0x00000020;
+                }
+                result.value_ = value_;
+                result.bitField0_ = to_bitField0_;
+                onBuilt();
+                return result;
+            }
+
+            public Builder mergeFrom(com.google.protobuf.Message other) {
+                if (other instanceof net.onrc.onos.core.datastore.RCProtos.LinkProperty) {
+                    return mergeFrom((net.onrc.onos.core.datastore.RCProtos.LinkProperty) other);
+                } else {
+                    super.mergeFrom(other);
+                    return this;
+                }
+            }
+
+            public Builder mergeFrom(net.onrc.onos.core.datastore.RCProtos.LinkProperty other) {
+                if (other == net.onrc.onos.core.datastore.RCProtos.LinkProperty.getDefaultInstance())
+                    return this;
+                if (other.hasSrcSwId()) {
+                    setSrcSwId(other.getSrcSwId());
+                }
+                if (other.hasSrcPortId()) {
+                    setSrcPortId(other.getSrcPortId());
+                }
+                if (other.hasDstSwId()) {
+                    setDstSwId(other.getDstSwId());
+                }
+                if (other.hasDstPortId()) {
+                    setDstPortId(other.getDstPortId());
+                }
+                if (other.hasStatus()) {
+                    setStatus(other.getStatus());
+                }
+                if (other.hasValue()) {
+                    setValue(other.getValue());
+                }
+                this.mergeUnknownFields(other.getUnknownFields());
+                return this;
+            }
+
+            public final boolean isInitialized() {
+                if (!hasSrcSwId()) {
+
+                    return false;
+                }
+                if (!hasSrcPortId()) {
+
+                    return false;
+                }
+                if (!hasDstSwId()) {
+
+                    return false;
+                }
+                if (!hasDstPortId()) {
+
+                    return false;
+                }
+                if (!hasStatus()) {
+
+                    return false;
+                }
+                return true;
+            }
+
+            public Builder mergeFrom(
+                    com.google.protobuf.CodedInputStream input,
+                    com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+                    throws java.io.IOException {
+                net.onrc.onos.core.datastore.RCProtos.LinkProperty parsedMessage = null;
+                try {
+                    parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+                } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+                    parsedMessage = (net.onrc.onos.core.datastore.RCProtos.LinkProperty) e.getUnfinishedMessage();
+                    throw e;
+                } finally {
+                    if (parsedMessage != null) {
+                        mergeFrom(parsedMessage);
+                    }
+                }
+                return this;
+            }
+
+            private int bitField0_;
+
+            // required bytes srcSwId = 1;
+            private com.google.protobuf.ByteString srcSwId_ = com.google.protobuf.ByteString.EMPTY;
+
+            /**
+             * <code>required bytes srcSwId = 1;</code>
+             */
+            public boolean hasSrcSwId() {
+                return ((bitField0_ & 0x00000001) == 0x00000001);
+            }
+
+            /**
+             * <code>required bytes srcSwId = 1;</code>
+             */
+            public com.google.protobuf.ByteString getSrcSwId() {
+                return srcSwId_;
+            }
+
+            /**
+             * <code>required bytes srcSwId = 1;</code>
+             */
+            public Builder setSrcSwId(com.google.protobuf.ByteString value) {
+                if (value == null) {
+                    throw new NullPointerException();
+                }
+                bitField0_ |= 0x00000001;
+                srcSwId_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required bytes srcSwId = 1;</code>
+             */
+            public Builder clearSrcSwId() {
+                bitField0_ = (bitField0_ & ~0x00000001);
+                srcSwId_ = getDefaultInstance().getSrcSwId();
+                onChanged();
+                return this;
+            }
+
+            // required bytes srcPortId = 2;
+            private com.google.protobuf.ByteString srcPortId_ = com.google.protobuf.ByteString.EMPTY;
+
+            /**
+             * <code>required bytes srcPortId = 2;</code>
+             */
+            public boolean hasSrcPortId() {
+                return ((bitField0_ & 0x00000002) == 0x00000002);
+            }
+
+            /**
+             * <code>required bytes srcPortId = 2;</code>
+             */
+            public com.google.protobuf.ByteString getSrcPortId() {
+                return srcPortId_;
+            }
+
+            /**
+             * <code>required bytes srcPortId = 2;</code>
+             */
+            public Builder setSrcPortId(com.google.protobuf.ByteString value) {
+                if (value == null) {
+                    throw new NullPointerException();
+                }
+                bitField0_ |= 0x00000002;
+                srcPortId_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required bytes srcPortId = 2;</code>
+             */
+            public Builder clearSrcPortId() {
+                bitField0_ = (bitField0_ & ~0x00000002);
+                srcPortId_ = getDefaultInstance().getSrcPortId();
+                onChanged();
+                return this;
+            }
+
+            // required bytes dstSwId = 3;
+            private com.google.protobuf.ByteString dstSwId_ = com.google.protobuf.ByteString.EMPTY;
+
+            /**
+             * <code>required bytes dstSwId = 3;</code>
+             */
+            public boolean hasDstSwId() {
+                return ((bitField0_ & 0x00000004) == 0x00000004);
+            }
+
+            /**
+             * <code>required bytes dstSwId = 3;</code>
+             */
+            public com.google.protobuf.ByteString getDstSwId() {
+                return dstSwId_;
+            }
+
+            /**
+             * <code>required bytes dstSwId = 3;</code>
+             */
+            public Builder setDstSwId(com.google.protobuf.ByteString value) {
+                if (value == null) {
+                    throw new NullPointerException();
+                }
+                bitField0_ |= 0x00000004;
+                dstSwId_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required bytes dstSwId = 3;</code>
+             */
+            public Builder clearDstSwId() {
+                bitField0_ = (bitField0_ & ~0x00000004);
+                dstSwId_ = getDefaultInstance().getDstSwId();
+                onChanged();
+                return this;
+            }
+
+            // required bytes dstPortId = 4;
+            private com.google.protobuf.ByteString dstPortId_ = com.google.protobuf.ByteString.EMPTY;
+
+            /**
+             * <code>required bytes dstPortId = 4;</code>
+             */
+            public boolean hasDstPortId() {
+                return ((bitField0_ & 0x00000008) == 0x00000008);
+            }
+
+            /**
+             * <code>required bytes dstPortId = 4;</code>
+             */
+            public com.google.protobuf.ByteString getDstPortId() {
+                return dstPortId_;
+            }
+
+            /**
+             * <code>required bytes dstPortId = 4;</code>
+             */
+            public Builder setDstPortId(com.google.protobuf.ByteString value) {
+                if (value == null) {
+                    throw new NullPointerException();
+                }
+                bitField0_ |= 0x00000008;
+                dstPortId_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required bytes dstPortId = 4;</code>
+             */
+            public Builder clearDstPortId() {
+                bitField0_ = (bitField0_ & ~0x00000008);
+                dstPortId_ = getDefaultInstance().getDstPortId();
+                onChanged();
+                return this;
+            }
+
+            // required int32 status = 5;
+            private int status_;
+
+            /**
+             * <code>required int32 status = 5;</code>
+             */
+            public boolean hasStatus() {
+                return ((bitField0_ & 0x00000010) == 0x00000010);
+            }
+
+            /**
+             * <code>required int32 status = 5;</code>
+             */
+            public int getStatus() {
+                return status_;
+            }
+
+            /**
+             * <code>required int32 status = 5;</code>
+             */
+            public Builder setStatus(int value) {
+                bitField0_ |= 0x00000010;
+                status_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>required int32 status = 5;</code>
+             */
+            public Builder clearStatus() {
+                bitField0_ = (bitField0_ & ~0x00000010);
+                status_ = 0;
+                onChanged();
+                return this;
+            }
+
+            // optional bytes value = 6;
+            private com.google.protobuf.ByteString value_ = com.google.protobuf.ByteString.EMPTY;
+
+            /**
+             * <code>optional bytes value = 6;</code>
+             */
+            public boolean hasValue() {
+                return ((bitField0_ & 0x00000020) == 0x00000020);
+            }
+
+            /**
+             * <code>optional bytes value = 6;</code>
+             */
+            public com.google.protobuf.ByteString getValue() {
+                return value_;
+            }
+
+            /**
+             * <code>optional bytes value = 6;</code>
+             */
+            public Builder setValue(com.google.protobuf.ByteString value) {
+                if (value == null) {
+                    throw new NullPointerException();
+                }
+                bitField0_ |= 0x00000020;
+                value_ = value;
+                onChanged();
+                return this;
+            }
+
+            /**
+             * <code>optional bytes value = 6;</code>
+             */
+            public Builder clearValue() {
+                bitField0_ = (bitField0_ & ~0x00000020);
+                value_ = getDefaultInstance().getValue();
+                onChanged();
+                return this;
+            }
+
+            // @@protoc_insertion_point(builder_scope:RCProtos.LinkProperty)
+        }
+
+        static {
+            defaultInstance = new LinkProperty(true);
+            defaultInstance.initFields();
+        }
+
+        // @@protoc_insertion_point(class_scope:RCProtos.LinkProperty)
     }
 
+    private static com.google.protobuf.Descriptors.Descriptor
+            internal_static_ProtoBuffer_SwitchProperty_descriptor;
+    private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+            internal_static_ProtoBuffer_SwitchProperty_fieldAccessorTable;
+    private static com.google.protobuf.Descriptors.Descriptor
+            internal_static_ProtoBuffer_PortProperty_descriptor;
+    private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+            internal_static_ProtoBuffer_PortProperty_fieldAccessorTable;
+    private static com.google.protobuf.Descriptors.Descriptor
+            internal_static_ProtoBuffer_LinkProperty_descriptor;
+    private static
+    com.google.protobuf.GeneratedMessage.FieldAccessorTable
+            internal_static_ProtoBuffer_LinkProperty_fieldAccessorTable;
+
+    public static com.google.protobuf.Descriptors.FileDescriptor
+    getDescriptor() {
+        return descriptor;
+    }
+
+    private static com.google.protobuf.Descriptors.FileDescriptor
+            descriptor;
+
     static {
-      defaultInstance = new LinkProperty(true);
-      defaultInstance.initFields();
+        java.lang.String[] descriptorData = {
+                "\n\027protobuf/ramcloud.proto\022\013ProtoBuffer\"=" +
+                        "\n\016SwitchProperty\022\014\n\004dpid\030\001 \002(\003\022\016\n\006status" +
+                        "\030\002 \002(\005\022\r\n\005value\030\003 \001(\014\"K\n\014PortProperty\022\014\n" +
+                        "\004dpid\030\001 \002(\003\022\016\n\006number\030\002 \002(\003\022\016\n\006status\030\003 " +
+                        "\002(\005\022\r\n\005value\030\004 \001(\014\"u\n\014LinkProperty\022\017\n\007sr" +
+                        "cSwId\030\001 \002(\014\022\021\n\tsrcPortId\030\002 \002(\014\022\017\n\007dstSwI" +
+                        "d\030\003 \002(\014\022\021\n\tdstPortId\030\004 \002(\014\022\016\n\006status\030\005 \002" +
+                        "(\005\022\r\n\005value\030\006 \001(\014B&\n\027net.onrc.onos.datas" +
+                        "toreB\013ProtoBuffer"
+        };
+        com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
+                new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
+                    public com.google.protobuf.ExtensionRegistry assignDescriptors(
+                            com.google.protobuf.Descriptors.FileDescriptor root) {
+                        descriptor = root;
+                        internal_static_ProtoBuffer_SwitchProperty_descriptor =
+                                getDescriptor().getMessageTypes().get(0);
+                        internal_static_ProtoBuffer_SwitchProperty_fieldAccessorTable = new
+                                com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+                                internal_static_ProtoBuffer_SwitchProperty_descriptor,
+                                new java.lang.String[]{"Dpid", "Status", "Value",});
+                        internal_static_ProtoBuffer_PortProperty_descriptor =
+                                getDescriptor().getMessageTypes().get(1);
+                        internal_static_ProtoBuffer_PortProperty_fieldAccessorTable = new
+                                com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+                                internal_static_ProtoBuffer_PortProperty_descriptor,
+                                new java.lang.String[]{"Dpid", "Number", "Status", "Value",});
+                        internal_static_ProtoBuffer_LinkProperty_descriptor =
+                                getDescriptor().getMessageTypes().get(2);
+                        internal_static_ProtoBuffer_LinkProperty_fieldAccessorTable = new
+                                com.google.protobuf.GeneratedMessage.FieldAccessorTable(
+                                internal_static_ProtoBuffer_LinkProperty_descriptor,
+                                new java.lang.String[]{"SrcSwId", "SrcPortId", "DstSwId", "DstPortId", "Status", "Value",});
+                        return null;
+                    }
+                };
+        com.google.protobuf.Descriptors.FileDescriptor
+                .internalBuildGeneratedFileFrom(descriptorData,
+                        new com.google.protobuf.Descriptors.FileDescriptor[]{
+                        }, assigner);
     }
 
-    // @@protoc_insertion_point(class_scope:RCProtos.LinkProperty)
-  }
-
-  private static com.google.protobuf.Descriptors.Descriptor
-    internal_static_ProtoBuffer_SwitchProperty_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
-      internal_static_ProtoBuffer_SwitchProperty_fieldAccessorTable;
-  private static com.google.protobuf.Descriptors.Descriptor
-    internal_static_ProtoBuffer_PortProperty_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
-      internal_static_ProtoBuffer_PortProperty_fieldAccessorTable;
-  private static com.google.protobuf.Descriptors.Descriptor
-    internal_static_ProtoBuffer_LinkProperty_descriptor;
-  private static
-    com.google.protobuf.GeneratedMessage.FieldAccessorTable
-      internal_static_ProtoBuffer_LinkProperty_fieldAccessorTable;
-
-  public static com.google.protobuf.Descriptors.FileDescriptor
-      getDescriptor() {
-    return descriptor;
-  }
-  private static com.google.protobuf.Descriptors.FileDescriptor
-      descriptor;
-  static {
-    java.lang.String[] descriptorData = {
-      "\n\027protobuf/ramcloud.proto\022\013ProtoBuffer\"=" +
-      "\n\016SwitchProperty\022\014\n\004dpid\030\001 \002(\003\022\016\n\006status" +
-      "\030\002 \002(\005\022\r\n\005value\030\003 \001(\014\"K\n\014PortProperty\022\014\n" +
-      "\004dpid\030\001 \002(\003\022\016\n\006number\030\002 \002(\003\022\016\n\006status\030\003 " +
-      "\002(\005\022\r\n\005value\030\004 \001(\014\"u\n\014LinkProperty\022\017\n\007sr" +
-      "cSwId\030\001 \002(\014\022\021\n\tsrcPortId\030\002 \002(\014\022\017\n\007dstSwI" +
-      "d\030\003 \002(\014\022\021\n\tdstPortId\030\004 \002(\014\022\016\n\006status\030\005 \002" +
-      "(\005\022\r\n\005value\030\006 \001(\014B&\n\027net.onrc.onos.datas" +
-      "toreB\013ProtoBuffer"
-    };
-    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
-      new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
-        public com.google.protobuf.ExtensionRegistry assignDescriptors(
-            com.google.protobuf.Descriptors.FileDescriptor root) {
-          descriptor = root;
-          internal_static_ProtoBuffer_SwitchProperty_descriptor =
-            getDescriptor().getMessageTypes().get(0);
-          internal_static_ProtoBuffer_SwitchProperty_fieldAccessorTable = new
-            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
-              internal_static_ProtoBuffer_SwitchProperty_descriptor,
-              new java.lang.String[] { "Dpid", "Status", "Value", });
-          internal_static_ProtoBuffer_PortProperty_descriptor =
-            getDescriptor().getMessageTypes().get(1);
-          internal_static_ProtoBuffer_PortProperty_fieldAccessorTable = new
-            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
-              internal_static_ProtoBuffer_PortProperty_descriptor,
-              new java.lang.String[] { "Dpid", "Number", "Status", "Value", });
-          internal_static_ProtoBuffer_LinkProperty_descriptor =
-            getDescriptor().getMessageTypes().get(2);
-          internal_static_ProtoBuffer_LinkProperty_fieldAccessorTable = new
-            com.google.protobuf.GeneratedMessage.FieldAccessorTable(
-              internal_static_ProtoBuffer_LinkProperty_descriptor,
-              new java.lang.String[] { "SrcSwId", "SrcPortId", "DstSwId", "DstPortId", "Status", "Value", });
-          return null;
-        }
-      };
-    com.google.protobuf.Descriptors.FileDescriptor
-      .internalBuildGeneratedFileFrom(descriptorData,
-        new com.google.protobuf.Descriptors.FileDescriptor[] {
-        }, assigner);
-  }
-
-  // @@protoc_insertion_point(outer_class_scope)
+    // @@protoc_insertion_point(outer_class_scope)
 }
diff --git a/src/main/java/net/onrc/onos/core/datastore/RejectRulesException.java b/src/main/java/net/onrc/onos/core/datastore/RejectRulesException.java
index 351d1a1..4ce1610 100644
--- a/src/main/java/net/onrc/onos/core/datastore/RejectRulesException.java
+++ b/src/main/java/net/onrc/onos/core/datastore/RejectRulesException.java
@@ -4,6 +4,7 @@
 // Not sure if we really need this base class.
 // Just copied hierarchy from RAMCloud.
 //
+
 /**
  * Base exception class for conditional write, etc. failure.
  */
diff --git a/src/main/java/net/onrc/onos/core/datastore/WrongVersionException.java b/src/main/java/net/onrc/onos/core/datastore/WrongVersionException.java
index 568f5e1..4fd0529 100644
--- a/src/main/java/net/onrc/onos/core/datastore/WrongVersionException.java
+++ b/src/main/java/net/onrc/onos/core/datastore/WrongVersionException.java
@@ -13,7 +13,7 @@
     }
 
     public WrongVersionException(final IKVTableID tableID, final byte[] key,
-            final long expectedVersion, final Throwable cause) {
+                                 final long expectedVersion, final Throwable cause) {
         // It will be best if {@code cause} has actual version encountered, but
         // doesn't currently.
         super(ByteArrayUtil.toHexStringBuffer(key, ":") + " on table:"
@@ -22,7 +22,7 @@
     }
 
     public WrongVersionException(final IKVTableID tableID, final byte[] key,
-            final long expectedVersion, final long encounteredVersion) {
+                                 final long expectedVersion, final long encounteredVersion) {
         super(ByteArrayUtil.toHexStringBuffer(key, ":") + " on table:"
                 + tableID + " was expected to be version:" + expectedVersion
                 + " but found:" + encounteredVersion);
diff --git a/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZClient.java b/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZClient.java
index d5107da..cbe10be 100644
--- a/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZClient.java
+++ b/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZClient.java
@@ -62,7 +62,7 @@
             baseHzConfig = new FileSystemXmlConfig(hazelcastConfigFileName);
         } catch (FileNotFoundException e) {
             log.error("Error opening Hazelcast XML configuration. File not found: " + hazelcastConfigFileName, e);
-            throw new Error("Cannot find Hazelcast configuration: " + hazelcastConfigFileName , e);
+            throw new Error("Cannot find Hazelcast configuration: " + hazelcastConfigFileName, e);
         }
 
         // use xml config if present, if not use System.property
@@ -118,6 +118,7 @@
 
     /**
      * Register serializer for VersionedValue class used to imitate value version.
+     *
      * @param config
      */
     private static void registerSerializer(final SerializationConfig config) {
@@ -178,7 +179,7 @@
 
     @Override
     public long update(final IKVTableID tableId, final byte[] key, final byte[] value,
-            final long version) throws ObjectDoesntExistException,
+                       final long version) throws ObjectDoesntExistException,
             WrongVersionException {
         IKVTable table = (IKVTable) tableId;
         return table.update(key, value, version);
@@ -212,13 +213,13 @@
 
     @Override
     public IMultiEntryOperation createOp(final IKVTableID tableId, final byte[] key,
-            final byte[] value) {
+                                         final byte[] value) {
         return new HZMultiEntryOperation((HZTable) tableId, key, value, HZClient.VERSION_NONEXISTENT, OPERATION.CREATE);
     }
 
     @Override
     public IMultiEntryOperation forceCreateOp(final IKVTableID tableId, final byte[] key,
-            final byte[] value) {
+                                              final byte[] value) {
         return new HZMultiEntryOperation((HZTable) tableId, key, value, HZClient.VERSION_NONEXISTENT, OPERATION.FORCE_CREATE);
     }
 
@@ -229,13 +230,13 @@
 
     @Override
     public IMultiEntryOperation updateOp(final IKVTableID tableId, final byte[] key,
-            final byte[] value, final long version) {
+                                         final byte[] value, final long version) {
         return new HZMultiEntryOperation((HZTable) tableId, key, value, version, OPERATION.UPDATE);
     }
 
     @Override
     public IMultiEntryOperation deleteOp(final IKVTableID tableId, final byte[] key,
-            final byte[] value, final long version) {
+                                         final byte[] value, final long version) {
         return new HZMultiEntryOperation((HZTable) tableId, key, value, version, OPERATION.DELETE);
     }
 
@@ -250,24 +251,24 @@
         for (IMultiEntryOperation op : ops) {
             HZMultiEntryOperation mop = (HZMultiEntryOperation) op;
             switch (mop.getOperation()) {
-            case DELETE:
-                try {
-                    final long version = delete(mop.getTableId(), mop.getKey(), mop.getVersion());
+                case DELETE:
+                    try {
+                        final long version = delete(mop.getTableId(), mop.getKey(), mop.getVersion());
+                        mop.setVersion(version);
+                        mop.setStatus(STATUS.SUCCESS);
+                    } catch (ObjectDoesntExistException | WrongVersionException e) {
+                        log.error(mop + " failed.", e);
+                        mop.setStatus(STATUS.FAILED);
+                        failExists = true;
+                    }
+                    break;
+                case FORCE_DELETE:
+                    final long version = forceDelete(mop.getTableId(), mop.getKey());
                     mop.setVersion(version);
                     mop.setStatus(STATUS.SUCCESS);
-                } catch (ObjectDoesntExistException | WrongVersionException e) {
-                    log.error(mop + " failed.", e);
-                    mop.setStatus(STATUS.FAILED);
-                    failExists = true;
-                }
-                break;
-            case FORCE_DELETE:
-                final long version = forceDelete(mop.getTableId(), mop.getKey());
-                mop.setVersion(version);
-                mop.setStatus(STATUS.SUCCESS);
-                break;
-            default:
-                throw new UnsupportedOperationException(mop.toString());
+                    break;
+                default:
+                    throw new UnsupportedOperationException(mop.toString());
             }
         }
         return failExists;
@@ -280,37 +281,36 @@
         for (IMultiEntryOperation op : ops) {
             IModifiableMultiEntryOperation mop = (IModifiableMultiEntryOperation) op;
             switch (mop.getOperation()) {
-            case CREATE:
-                try {
-                    long version = create(mop.getTableId(), mop.getKey(), mop.getValue());
+                case CREATE:
+                    try {
+                        long version = create(mop.getTableId(), mop.getKey(), mop.getValue());
+                        mop.setVersion(version);
+                        mop.setStatus(STATUS.SUCCESS);
+                    } catch (ObjectExistsException e) {
+                        log.error(mop + " failed.", e);
+                        mop.setStatus(STATUS.FAILED);
+                        failExists = true;
+                    }
+                    break;
+                case FORCE_CREATE: {
+                    final long version = forceCreate(mop.getTableId(), mop.getKey(), mop.getValue());
                     mop.setVersion(version);
                     mop.setStatus(STATUS.SUCCESS);
-                } catch (ObjectExistsException e) {
-                    log.error(mop + " failed.", e);
-                    mop.setStatus(STATUS.FAILED);
-                    failExists = true;
+                    break;
                 }
-                break;
-            case FORCE_CREATE:
-            {
-                final long version = forceCreate(mop.getTableId(), mop.getKey(), mop.getValue());
-                mop.setVersion(version);
-                mop.setStatus(STATUS.SUCCESS);
-                break;
-            }
-            case UPDATE:
-                try {
-                    long version = update(mop.getTableId(), mop.getKey(), mop.getValue(), mop.getVersion());
-                    mop.setVersion(version);
-                    mop.setStatus(STATUS.SUCCESS);
-                } catch (ObjectDoesntExistException | WrongVersionException e) {
-                    log.error(mop + " failed.", e);
-                    mop.setStatus(STATUS.FAILED);
-                    failExists = true;
-                }
-                break;
-            default:
-                throw new UnsupportedOperationException(mop.toString());
+                case UPDATE:
+                    try {
+                        long version = update(mop.getTableId(), mop.getKey(), mop.getValue(), mop.getVersion());
+                        mop.setVersion(version);
+                        mop.setStatus(STATUS.SUCCESS);
+                    } catch (ObjectDoesntExistException | WrongVersionException e) {
+                        log.error(mop + " failed.", e);
+                        mop.setStatus(STATUS.FAILED);
+                        failExists = true;
+                    }
+                    break;
+                default:
+                    throw new UnsupportedOperationException(mop.toString());
             }
         }
         return failExists;
diff --git a/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZMultiEntryOperation.java b/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZMultiEntryOperation.java
index 105fc16..88649e7 100644
--- a/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZMultiEntryOperation.java
+++ b/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZMultiEntryOperation.java
@@ -28,6 +28,7 @@
 
     /**
      * Constructor for Read/ForceDelete Operation.
+     *
      * @param table
      * @param key
      * @param operation
@@ -44,6 +45,7 @@
 
     /**
      * Constructor for Other Operations.
+     *
      * @param table
      * @param key
      * @param value
@@ -108,6 +110,7 @@
 
     /**
      * Evaluate Future object and set Status and Value+Version.
+     *
      * @return the value read or null on failure.
      */
     private VersionedValue get() {
diff --git a/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZTable.java b/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZTable.java
index f071ecc..6cba576 100644
--- a/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZTable.java
+++ b/src/main/java/net/onrc/onos/core/datastore/hazelcast/HZTable.java
@@ -26,10 +26,11 @@
     private static final Logger log = LoggerFactory.getLogger(HZTable.class);
 
     // not sure how strict this should be managed
-    private static final AtomicLong  initialVersion = new AtomicLong(HZClient.VERSION_NONEXISTENT);
+    private static final AtomicLong initialVersion = new AtomicLong(HZClient.VERSION_NONEXISTENT);
 
     /**
      * generate a new initial version for an entry.
+     *
      * @return initial value
      */
     protected static long getInitialVersion() {
@@ -43,6 +44,7 @@
 
     /**
      * increment version, avoiding VERSION_NONEXISTENT.
+     *
      * @param version
      * @return
      */
@@ -185,7 +187,6 @@
     }
 
 
-
     private final String mapName;
     private final IMap<byte[], VersionedValue> map;
 
diff --git a/src/main/java/net/onrc/onos/core/datastore/hazelcast/VersionedValueSerializableFactory.java b/src/main/java/net/onrc/onos/core/datastore/hazelcast/VersionedValueSerializableFactory.java
index 7e77be7..75bd568 100644
--- a/src/main/java/net/onrc/onos/core/datastore/hazelcast/VersionedValueSerializableFactory.java
+++ b/src/main/java/net/onrc/onos/core/datastore/hazelcast/VersionedValueSerializableFactory.java
@@ -13,11 +13,11 @@
     @Override
     public IdentifiedDataSerializable create(final int typeId) {
         switch (typeId) {
-        case VERSIONED_VALUE_ID:
-            return new HZTable.VersionedValue();
+            case VERSIONED_VALUE_ID:
+                return new HZTable.VersionedValue();
 
-        default:
-            return null;
+            default:
+                return null;
         }
     }
 
diff --git a/src/main/java/net/onrc/onos/core/datastore/internal/IModifiableMultiEntryOperation.java b/src/main/java/net/onrc/onos/core/datastore/internal/IModifiableMultiEntryOperation.java
index a607add..631aaea 100644
--- a/src/main/java/net/onrc/onos/core/datastore/internal/IModifiableMultiEntryOperation.java
+++ b/src/main/java/net/onrc/onos/core/datastore/internal/IModifiableMultiEntryOperation.java
@@ -4,7 +4,7 @@
 
 /**
  * Interface for backend to realize IMultiEntryOperation.
- *
+ * <p/>
  * Backend implementation must use these interfaces to update IMultiEntryOperation
  * in order to support KVObject.
  */
@@ -12,8 +12,9 @@
 
     /**
      * Set value and version.
-     *
+     * <p/>
      * Expected to be called on multiRead implementations.
+     *
      * @param value
      * @param version
      */
@@ -21,23 +22,26 @@
 
     /**
      * Update version of the value.
-     *
+     * <p/>
      * Expected to be called on multiWrite, multiRead implementations.
+     *
      * @param version
      */
     public void setVersion(long version);
 
     /**
      * Update status.
-     *
+     * <p/>
      * Backend implementation is expected to update to SUCCESS or FAILED after
      * datastore operation.
+     *
      * @param status
      */
     public void setStatus(STATUS status);
 
     /**
      * Return actual IModifiableMultiEntryOperation if is a wrapper, this otherwise.
+     *
      * @return actual IModifiableMultiEntryOperation directly interact with data store
      */
     public IModifiableMultiEntryOperation getActualOperation();
diff --git a/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCClient.java b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCClient.java
index 7ff7e7f..41fda9e 100644
--- a/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCClient.java
+++ b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCClient.java
@@ -61,16 +61,16 @@
 
     /**
      * @return JRamCloud instance intended to be used only within the
-     *         SameThread.
+     * SameThread.
      * @note Do not store the returned instance in a member variable, etc. which
-     *       may be accessed later by another thread.
+     * may be accessed later by another thread.
      */
     static JRamCloud getJRamCloudClient() {
         return tlsRCClient.get();
     }
 
     // Currently RCClient is state-less
-    private static final RCClient theInstance= new RCClient();
+    private static final RCClient theInstance = new RCClient();
 
     public static RCClient getClient() {
         return theInstance;
@@ -172,13 +172,13 @@
     }
 
     @Override
-    public IMultiEntryOperation updateOp(IKVTableID tableId, byte[] key, byte[] value,long version) {
+    public IMultiEntryOperation updateOp(IKVTableID tableId, byte[] key, byte[] value, long version) {
         return RCMultiEntryOperation.update(tableId, key, value, version);
     }
 
     @Override
     public long update(IKVTableID tableId, byte[] key, byte[] value,
-            long version) throws ObjectDoesntExistException,
+                       long version) throws ObjectDoesntExistException,
             WrongVersionException {
 
         RCTableID rcTableId = (RCTableID) tableId;
@@ -222,7 +222,7 @@
     }
 
     @Override
-    public IMultiEntryOperation deleteOp(IKVTableID tableId, byte[] key, byte[] value,long version) {
+    public IMultiEntryOperation deleteOp(IKVTableID tableId, byte[] key, byte[] value, long version) {
         return RCMultiEntryOperation.delete(tableId, key, value, version);
     }
 
@@ -323,9 +323,9 @@
     @Override
     public boolean multiRead(final Collection<IMultiEntryOperation> ops) {
 
-        if ( ops.size() <= MAX_MULTI_READS && ops instanceof ArrayList) {
-            @SuppressWarnings({ "unchecked", "rawtypes" })
-            final ArrayList<RCMultiEntryOperation> arrays = (ArrayList)ops;
+        if (ops.size() <= MAX_MULTI_READS && ops instanceof ArrayList) {
+            @SuppressWarnings({"unchecked", "rawtypes"})
+            final ArrayList<RCMultiEntryOperation> arrays = (ArrayList) ops;
             return multiReadInternal(arrays);
         }
 
@@ -356,9 +356,9 @@
     @Override
     public boolean multiWrite(final List<IMultiEntryOperation> ops) {
 
-        if ( ops.size() <= MAX_MULTI_WRITES && ops instanceof ArrayList) {
-            @SuppressWarnings({ "unchecked", "rawtypes" })
-            final ArrayList<RCMultiEntryOperation> arrays = (ArrayList)ops;
+        if (ops.size() <= MAX_MULTI_WRITES && ops instanceof ArrayList) {
+            @SuppressWarnings({"unchecked", "rawtypes"})
+            final ArrayList<RCMultiEntryOperation> arrays = (ArrayList) ops;
             return multiWriteInternal(arrays);
         }
 
@@ -395,45 +395,45 @@
         JRamCloud rcClient = getJRamCloudClient();
 
         for (IMultiEntryOperation iop : ops) {
-            RCMultiEntryOperation op = (RCMultiEntryOperation)iop;
+            RCMultiEntryOperation op = (RCMultiEntryOperation) iop;
             switch (op.getOperation()) {
-            case DELETE:
-                RejectRules rules = new RejectRules();
-                rules.rejectIfDoesntExists();
-                rules.rejectIfNeVersion(op.getVersion());
+                case DELETE:
+                    RejectRules rules = new RejectRules();
+                    rules.rejectIfDoesntExists();
+                    rules.rejectIfNeVersion(op.getVersion());
 
-                try {
-                    final long removedVersion = rcClient.remove(op.tableId.getTableID(), op.entry.getKey(), rules);
-                    op.entry.setVersion(removedVersion);
-                    op.status = STATUS.SUCCESS;
-                } catch (JRamCloud.ObjectDoesntExistException|JRamCloud.WrongVersionException e) {
-                    log.error("Failed to remove key:" + ByteArrayUtil.toHexStringBuffer(op.entry.getKey(), "") + " from tableID:" + op.tableId, e );
+                    try {
+                        final long removedVersion = rcClient.remove(op.tableId.getTableID(), op.entry.getKey(), rules);
+                        op.entry.setVersion(removedVersion);
+                        op.status = STATUS.SUCCESS;
+                    } catch (JRamCloud.ObjectDoesntExistException | JRamCloud.WrongVersionException e) {
+                        log.error("Failed to remove key:" + ByteArrayUtil.toHexStringBuffer(op.entry.getKey(), "") + " from tableID:" + op.tableId, e);
+                        failExists = true;
+                        op.status = STATUS.FAILED;
+                    } catch (JRamCloud.RejectRulesException e) {
+                        log.error("Failed to remove key:" + ByteArrayUtil.toHexStringBuffer(op.entry.getKey(), "") + " from tableID:" + op.tableId, e);
+                        failExists = true;
+                        op.status = STATUS.FAILED;
+                    }
+                    break;
+
+                case FORCE_DELETE:
+                    final long removedVersion = rcClient.remove(op.tableId.getTableID(), op.entry.getKey());
+                    if (removedVersion != VERSION_NONEXISTENT) {
+                        op.entry.setVersion(removedVersion);
+                        op.status = STATUS.SUCCESS;
+                    } else {
+                        log.error("Failed to remove key:{} from tableID:{}", ByteArrayUtil.toHexStringBuffer(op.entry.getKey(), ""), op.tableId);
+                        failExists = true;
+                        op.status = STATUS.FAILED;
+                    }
+                    break;
+
+                default:
+                    log.error("Invalid operation {} specified on multiDelete", op.getOperation());
                     failExists = true;
                     op.status = STATUS.FAILED;
-                } catch (JRamCloud.RejectRulesException e) {
-                    log.error("Failed to remove key:" + ByteArrayUtil.toHexStringBuffer(op.entry.getKey(), "") + " from tableID:" + op.tableId, e );
-                    failExists = true;
-                    op.status = STATUS.FAILED;
-                }
-                break;
-
-            case FORCE_DELETE:
-                final long removedVersion = rcClient.remove(op.tableId.getTableID(), op.entry.getKey());
-                if (removedVersion != VERSION_NONEXISTENT) {
-                    op.entry.setVersion(removedVersion);
-                    op.status = STATUS.SUCCESS;
-                } else {
-                    log.error("Failed to remove key:{} from tableID:{}", ByteArrayUtil.toHexStringBuffer(op.entry.getKey(), ""), op.tableId );
-                    failExists = true;
-                    op.status = STATUS.FAILED;
-                }
-                break;
-
-            default:
-                log.error("Invalid operation {} specified on multiDelete", op.getOperation() );
-                failExists = true;
-                op.status = STATUS.FAILED;
-                break;
+                    break;
             }
         }
         return failExists;
@@ -450,7 +450,7 @@
         // setup multi-read operation objects
         for (int i = 0; i < reqs; ++i) {
             IMultiEntryOperation op = ops.get(i);
-            multiReadObjects.setObject(i, ((RCTableID)op.getTableId()).getTableID(), op.getKey());
+            multiReadObjects.setObject(i, ((RCTableID) op.getTableId()).getTableID(), op.getKey());
         }
 
         // execute
@@ -496,24 +496,24 @@
             RejectRules rules = new RejectRules();
 
             switch (op.getOperation()) {
-            case CREATE:
-                rules.rejectIfExists();
-                break;
-            case FORCE_CREATE:
-                // no reject rule
-                break;
-            case UPDATE:
-                rules.rejectIfDoesntExists();
-                rules.rejectIfNeVersion(op.getVersion());
-                break;
+                case CREATE:
+                    rules.rejectIfExists();
+                    break;
+                case FORCE_CREATE:
+                    // no reject rule
+                    break;
+                case UPDATE:
+                    rules.rejectIfDoesntExists();
+                    rules.rejectIfNeVersion(op.getVersion());
+                    break;
 
-            default:
-                log.error("Invalid operation {} specified on multiWriteInternal", op.getOperation() );
-                failExists = true;
-                op.setStatus(STATUS.FAILED);
-                return failExists;
+                default:
+                    log.error("Invalid operation {} specified on multiWriteInternal", op.getOperation());
+                    failExists = true;
+                    op.setStatus(STATUS.FAILED);
+                    return failExists;
             }
-            multiWriteObjects.setObject(i, ((RCTableID)op.getTableId()).getTableID(), op.getKey(), op.getValue(), rules);
+            multiWriteObjects.setObject(i, ((RCTableID) op.getTableId()).getTableID(), op.getKey(), op.getValue(), rules);
         }
 
         MultiWriteRspObject[] results = rcClient.multiWrite(multiWriteObjects.tableId, multiWriteObjects.key, multiWriteObjects.keyLength, multiWriteObjects.value, multiWriteObjects.valueLength, ops.size(), multiWriteObjects.rules);
diff --git a/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCMultiEntryOperation.java b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCMultiEntryOperation.java
index 9b8c8b6..9893838 100644
--- a/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCMultiEntryOperation.java
+++ b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCMultiEntryOperation.java
@@ -73,33 +73,33 @@
     }
 
     public static IMultiEntryOperation create(final IKVTableID tableId, final byte[] key, final byte[] value) {
-        return  new RCMultiEntryOperation(tableId, new Entry(key,value, RCClient.VERSION_NONEXISTENT), OPERATION.CREATE);
+        return new RCMultiEntryOperation(tableId, new Entry(key, value, RCClient.VERSION_NONEXISTENT), OPERATION.CREATE);
     }
 
     public static IMultiEntryOperation forceCreate(final IKVTableID tableId, final byte[] key, final byte[] value) {
-        return  new RCMultiEntryOperation(tableId, new Entry(key,value, RCClient.VERSION_NONEXISTENT), OPERATION.FORCE_CREATE);
+        return new RCMultiEntryOperation(tableId, new Entry(key, value, RCClient.VERSION_NONEXISTENT), OPERATION.FORCE_CREATE);
     }
 
     /**
      * Constructor for READ operation.
      *
      * @param tableId table to read from
-     * @param key key of an Entry to read
+     * @param key     key of an Entry to read
      */
     public static IMultiEntryOperation read(final IKVTableID tableId, final byte[] key) {
         return new RCMultiEntryOperation(tableId, new Entry(key), OPERATION.READ);
     }
 
     public static IMultiEntryOperation update(final IKVTableID tableId, final byte[] key, final byte[] value, final long version) {
-        return  new RCMultiEntryOperation(tableId, new Entry(key,value, version), OPERATION.UPDATE);
+        return new RCMultiEntryOperation(tableId, new Entry(key, value, version), OPERATION.UPDATE);
     }
 
     public static IMultiEntryOperation delete(final IKVTableID tableId, final byte[] key, final byte[] value, final long version) {
-        return  new RCMultiEntryOperation(tableId, new Entry(key,value, version), OPERATION.DELETE);
+        return new RCMultiEntryOperation(tableId, new Entry(key, value, version), OPERATION.DELETE);
     }
 
     public static IMultiEntryOperation forceDelete(final IKVTableID tableId, final byte[] key) {
-        return  new RCMultiEntryOperation(tableId, new Entry(key), OPERATION.FORCE_DELETE);
+        return new RCMultiEntryOperation(tableId, new Entry(key), OPERATION.FORCE_DELETE);
     }
 
     @Override
diff --git a/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTable.java b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTable.java
index 098215e..e5a6675 100644
--- a/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTable.java
+++ b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTable.java
@@ -58,8 +58,8 @@
     private final RCTableID rcTableId;
 
     /**
-     *
      * {@code rcTableName} must be unique cluster wide.
+     *
      * @param rcTableName RAMCloud table name
      */
     RCTable(final String rcTableName) {
diff --git a/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTableID.java b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTableID.java
index f69addc..9882ce3 100644
--- a/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTableID.java
+++ b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTableID.java
@@ -21,7 +21,7 @@
     // following is RAMCloud specific
 
     public long getTableID() {
-        if ( tableID != 0) {
+        if (tableID != 0) {
             return tableID;
         }
         tableID = RCClient.getJRamCloudClient().createTable(tableName);
@@ -34,7 +34,7 @@
 
     @Override
     public String toString() {
-        return "["+tableName + "]@" + getTableID();
+        return "[" + tableName + "]@" + getTableID();
     }
 
     @Override
diff --git a/src/main/java/net/onrc/onos/core/datastore/topology/KVDevice.java b/src/main/java/net/onrc/onos/core/datastore/topology/KVDevice.java
index 14268b5..8b1d8af 100644
--- a/src/main/java/net/onrc/onos/core/datastore/topology/KVDevice.java
+++ b/src/main/java/net/onrc/onos/core/datastore/topology/KVDevice.java
@@ -25,7 +25,7 @@
 
 /**
  * Device object.
- *
+ * <p/>
  * TODO switch to ProtoBuf, etc.
  */
 public class KVDevice extends KVObject {
@@ -55,7 +55,7 @@
     private final byte[] mac;
     private TreeSet<byte[]> portIds;
     private transient boolean isPortIdsModified;
-    
+
     // Assume there is only one ip on a device now.
     private int ip;
     private long lastSeenTime;
@@ -86,9 +86,9 @@
     /**
      * Get an instance from Key.
      *
-     * @note You need to call `read()` to get the DB content.
      * @param key
      * @return
+     * @note You need to call `read()` to get the DB content.
      */
     public static KVDevice createFromKey(final byte[] key) {
         return new KVDevice(getMacFromKey(key));
@@ -150,7 +150,6 @@
     }
 
     /**
-     *
      * @return Unmodifiable Set view of all the PortIds;
      */
     public Set<byte[]> getAllPortIds() {
@@ -203,20 +202,20 @@
         return "[" + this.getClass().getSimpleName()
                 + " " + ByteArrayUtil.toHexStringBuffer(mac, ":") + "]";
     }
-    
-	public int getIp() {
-		return ip;
-	}
 
-	public void setIp(int ip) {
-		this.ip = ip;
-	}
+    public int getIp() {
+        return ip;
+    }
 
-	public long getLastSeenTime() {
-		return lastSeenTime;
-	}
+    public void setIp(int ip) {
+        this.ip = ip;
+    }
 
-	public void setLastSeenTime(long lastSeenTime) {
-		this.lastSeenTime = lastSeenTime;
-	}
+    public long getLastSeenTime() {
+        return lastSeenTime;
+    }
+
+    public void setLastSeenTime(long lastSeenTime) {
+        this.lastSeenTime = lastSeenTime;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/datastore/topology/KVLink.java b/src/main/java/net/onrc/onos/core/datastore/topology/KVLink.java
index 23001ff..64eabc1 100644
--- a/src/main/java/net/onrc/onos/core/datastore/topology/KVLink.java
+++ b/src/main/java/net/onrc/onos/core/datastore/topology/KVLink.java
@@ -76,7 +76,7 @@
     private STATUS status;
 
     public static byte[] getLinkID(final Long src_dpid, final Long src_port_no,
-            final Long dst_dpid, final Long dst_port_no) {
+                                   final Long dst_dpid, final Long dst_port_no) {
         return LinkEvent.getLinkID(src_dpid, src_port_no, dst_dpid,
                 dst_port_no).array();
     }
@@ -103,7 +103,7 @@
     }
 
     public KVLink(final Long src_dpid, final Long src_port_no,
-            final Long dst_dpid, final Long dst_port_no) {
+                  final Long dst_dpid, final Long dst_port_no) {
         super(DataStoreClient.getClient().getTable(GLOBAL_LINK_TABLE_NAME), getLinkID(src_dpid,
                 src_port_no, dst_dpid, dst_port_no));
 
@@ -115,9 +115,9 @@
     /**
      * Get an instance from Key.
      *
-     * @note You need to call `read()` to get the DB content.
      * @param key
      * @return KVLink instance
+     * @note You need to call `read()` to get the DB content.
      */
     public static KVLink createFromKey(final byte[] key) {
         long[] linkTuple = getLinkTupleFromKey(key);
diff --git a/src/main/java/net/onrc/onos/core/datastore/topology/KVPort.java b/src/main/java/net/onrc/onos/core/datastore/topology/KVPort.java
index a5b41e6..db4e1ff 100644
--- a/src/main/java/net/onrc/onos/core/datastore/topology/KVPort.java
+++ b/src/main/java/net/onrc/onos/core/datastore/topology/KVPort.java
@@ -21,10 +21,10 @@
 
 /**
  * Port object in data store.
- *
+ * <p/>
  * Note: This class will not maintain invariants.
- *       e.g., It will NOT automatically remove Links or Devices on Port,
- *       when deleting a Port.
+ * e.g., It will NOT automatically remove Links or Devices on Port,
+ * when deleting a Port.
  */
 public class KVPort extends KVObject {
     private static final Logger log = LoggerFactory.getLogger(KVPort.class);
@@ -105,9 +105,9 @@
     /**
      * Get an instance from Key.
      *
-     * @note You need to call `read()` to get the DB content.
      * @param key
      * @return KVPort instance
+     * @note You need to call `read()` to get the DB content.
      */
     public static KVPort createFromKey(final byte[] key) {
         long[] pair = getPortPairFromKey(key);
diff --git a/src/main/java/net/onrc/onos/core/datastore/topology/KVSwitch.java b/src/main/java/net/onrc/onos/core/datastore/topology/KVSwitch.java
index 474e99a..9f865e0 100644
--- a/src/main/java/net/onrc/onos/core/datastore/topology/KVSwitch.java
+++ b/src/main/java/net/onrc/onos/core/datastore/topology/KVSwitch.java
@@ -20,10 +20,10 @@
 
 /**
  * Switch object in data store.
- *
+ * <p/>
  * Note: This class will not maintain invariants.
- *       e.g., It will NOT automatically remove Ports on Switch,
- *       when deleting a Switch.
+ * e.g., It will NOT automatically remove Ports on Switch,
+ * when deleting a Switch.
  */
 public class KVSwitch extends KVObject {
     private static final Logger log = LoggerFactory.getLogger(KVSwitch.class);
@@ -80,9 +80,9 @@
     /**
      * Get an instance from Key.
      *
-     * @note You need to call `read()` to get the DB content.
      * @param key
      * @return KVSwitch instance
+     * @note You need to call `read()` to get the DB content.
      */
     public static KVSwitch createFromKey(final byte[] key) {
         return new KVSwitch(getDpidFromKey(key));
diff --git a/src/main/java/net/onrc/onos/core/datastore/utils/ByteArrayComparator.java b/src/main/java/net/onrc/onos/core/datastore/utils/ByteArrayComparator.java
index f937e50..0c0cf18 100644
--- a/src/main/java/net/onrc/onos/core/datastore/utils/ByteArrayComparator.java
+++ b/src/main/java/net/onrc/onos/core/datastore/utils/ByteArrayComparator.java
@@ -5,7 +5,7 @@
 
 /**
  * Comparator which will compares the content of byte[].
- *
+ * <p/>
  * Expected to be used with TreeMap, etc. when you want to use byte[] as a key.
  */
 public final class ByteArrayComparator implements Comparator<byte[]> {
diff --git a/src/main/java/net/onrc/onos/core/datastore/utils/ByteArrayUtil.java b/src/main/java/net/onrc/onos/core/datastore/utils/ByteArrayUtil.java
index 14cd419..32abb59 100644
--- a/src/main/java/net/onrc/onos/core/datastore/utils/ByteArrayUtil.java
+++ b/src/main/java/net/onrc/onos/core/datastore/utils/ByteArrayUtil.java
@@ -5,7 +5,8 @@
 public class ByteArrayUtil {
 
     // Suppresses default constructor, ensuring non-instantiability.
-    private ByteArrayUtil() {}
+    private ByteArrayUtil() {
+    }
 
     /**
      * Returns a StringBuffer with each byte in {@code bytes}
@@ -13,11 +14,11 @@
      * separated by {@code sep}.
      *
      * @param bytes byte array to convert
-     * @param sep separator between each bytes
+     * @param sep   separator between each bytes
      * @return {@code bytes} converted to a StringBuffer
      */
     public static StringBuffer toHexStringBuffer(final byte[] bytes,
-            final String sep) {
+                                                 final String sep) {
         return toHexStringBuffer(bytes, sep, new StringBuffer());
     }
 
@@ -27,12 +28,12 @@
      * separated by {@code sep}.
      *
      * @param bytes byte array to convert
-     * @param sep separator between each bytes
-     * @param buf StringBuffer to append to.
+     * @param sep   separator between each bytes
+     * @param buf   StringBuffer to append to.
      * @return {@code buf}
      */
     public static StringBuffer toHexStringBuffer(final byte[] bytes,
-            final String sep, final StringBuffer buf) {
+                                                 final String sep, final StringBuffer buf) {
         if (bytes == null) {
             return buf;
         }
diff --git a/src/main/java/net/onrc/onos/core/datastore/utils/KVObject.java b/src/main/java/net/onrc/onos/core/datastore/utils/KVObject.java
index ce4f617..937129a 100644
--- a/src/main/java/net/onrc/onos/core/datastore/utils/KVObject.java
+++ b/src/main/java/net/onrc/onos/core/datastore/utils/KVObject.java
@@ -27,7 +27,6 @@
 
 /**
  * Class to represent an Object represented as a single K-V pair Value blob.
- *
  */
 public class KVObject {
     private static final Logger log = LoggerFactory.getLogger(KVObject.class);
@@ -55,7 +54,7 @@
     private long version;
 
     /**
-     *  Map to store user-defined properties
+     * Map to store user-defined properties
      */
     private Map<Object, Object> propertyMap;
 
@@ -105,8 +104,8 @@
     /**
      * Return user-defined object properties.
      *
-     * @note Will not trigger deserialization
      * @return Will return null, if never been set, or was not deserialized
+     * @note Will not trigger deserialization
      */
     protected Map<Object, Object> getPropertyMap() {
         return this.propertyMap;
@@ -120,7 +119,7 @@
 
     /**
      * Serialize object.
-     *
+     * <p/>
      * sub-classes should override this method to customize serialization.
      *
      * @return serialized byte array
@@ -130,7 +129,7 @@
     }
 
     protected byte[] serializePropertyMap(final Kryo kryo,
-            final Map<Object, Object> propMap) {
+                                          final Map<Object, Object> propMap) {
 
 
         // value
@@ -144,7 +143,7 @@
     /**
      * Deserialize using value and version stored in data store.
      *
-     * @param bytes serialized bytes
+     * @param bytes   serialized bytes
      * @param version version of this {@code bytes}
      * @return true if success
      */
@@ -155,7 +154,7 @@
 
     /**
      * Deserialize object.
-     *
+     * <p/>
      * sub-classes should override this method to customize deserialization.
      *
      * @param bytes serialized byte array
@@ -168,7 +167,8 @@
 
     /**
      * Deserialize and set {@link propertyMap}.
-     * @param kryo serializer to use
+     *
+     * @param kryo  serializer to use
      * @param bytes Kryo serialized Map object
      * @return true if success
      */
@@ -183,7 +183,7 @@
     }
 
     protected <T extends Map<?, ?>> T deserializePropertyMap(final Kryo kryo,
-            final byte[] bytes, final Class<T> type) {
+                                                             final byte[] bytes, final Class<T> type) {
 
         if (bytes == null || bytes.length == 0) {
             return null;
@@ -198,7 +198,7 @@
 
     /**
      * Create an Object in DataStore.
-     *
+     * <p/>
      * Fails if the Object with same key already exists.
      *
      * @throws ObjectExistsException
@@ -225,11 +225,10 @@
 
     /**
      * Read an Object from DataStore.
-     *
+     * <p/>
      * Fails if the Object with the key does not exist.
      *
      * @throws ObjectDoesntExistException
-     *
      */
     public void read() throws ObjectDoesntExistException {
         IKVEntry e = table.read(key);
@@ -238,14 +237,14 @@
 
     /**
      * Update an existing Object in DataStore checking versions.
-     *
+     * <p/>
      * Fails if the Object with key does not exists, or conditional failure.
      *
      * @throws WrongVersionException
      * @throws ObjectDoesntExistException
      */
     public void update() throws ObjectDoesntExistException,
-    WrongVersionException {
+            WrongVersionException {
         if (this.propertyMap == null) {
             replacePropertyMap(new HashMap<Object, Object>());
         }
@@ -255,14 +254,14 @@
 
     /**
      * Remove an existing Object in DataStore.
-     *
+     * <p/>
      * Fails if the Object with key does not exists.
      *
      * @throws ObjectDoesntExistException
      * @throws WrongVersionException
      */
     public void delete() throws ObjectDoesntExistException,
-    WrongVersionException {
+            WrongVersionException {
         this.version = table.delete(key, this.version);
     }
 
@@ -297,11 +296,10 @@
 
     /**
      * Multi-read RCObjects.
-     *
+     * <p/>
      * If the blob value was read successfully, RCObject will deserialize them.
      *
-     * @param objects
-     *            RCObjects to read
+     * @param objects RCObjects to read
      * @return true if there exist a failed read.
      */
     public static boolean multiRead(final List<? extends KVObject> objects) {
@@ -318,8 +316,8 @@
         for (int i = 0; i < readOps.size(); ++i) {
             KVObject obj = objects.get(i);
             IMultiEntryOperation entry = readOps.get(i);
-            if ( entry.hasSucceeded() ) {
-                if ( !obj.deserialize(entry.getValue(), entry.getVersion()) ) {
+            if (entry.hasSucceeded()) {
+                if (!obj.deserialize(entry.getValue(), entry.getVersion())) {
                     //deserialize return true on success
                     failExists = true;
                     log.error("MultiRead error, failed to deserialize {}, {}", obj.getTable(), obj);
@@ -346,14 +344,14 @@
             this.base = (IModifiableMultiEntryOperation) base;
             this.obj = obj;
 
-            //	    switch (base.getOperation()) {
-            //	    case CREATE:
-            //	    case FORCE_CREATE:
-            //	    case UPDATE:
-            //		break;
-            //	    default:
-            //		throw new UnsupportedOperationException("Unexpected OPERATION:"+base.getOperation());
-            //	    }
+            //      switch (base.getOperation()) {
+            //      case CREATE:
+            //      case FORCE_CREATE:
+            //      case UPDATE:
+            //          break;
+            //      default:
+            //          throw new UnsupportedOperationException("Unexpected OPERATION:"+base.getOperation());
+            //      }
         }
 
         @Override
@@ -436,7 +434,7 @@
     }
 
     public abstract static class AbstractObjectIterator<E extends KVObject> implements
-    Iterator<E> {
+            Iterator<E> {
 
         protected Iterator<IKVEntry> enumerator;
 
@@ -450,13 +448,13 @@
         }
 
         // Implement something similar to below to realize Iterator
-        //	@Override
-        //	public E next() {
-        //	    IKVTable.IKVEntry o = enumerator.next();
-        //	    E obj = E.createFromKey(o.getKey());
-        //	    obj.deserialize(o.getValue(), o.getVersion());
-        //	    return obj;
-        //	}
+        //      @Override
+        //      public E next() {
+        //          IKVTable.IKVEntry o = enumerator.next();
+        //          E obj = E.createFromKey(o.getKey());
+        //          obj.deserialize(o.getValue(), o.getVersion());
+        //          return obj;
+        //      }
 
         @Deprecated
         @Override
diff --git a/src/main/java/net/onrc/onos/core/devicemanager/IOnosDeviceListener.java b/src/main/java/net/onrc/onos/core/devicemanager/IOnosDeviceListener.java
index 69b340b..405340f 100644
--- a/src/main/java/net/onrc/onos/core/devicemanager/IOnosDeviceListener.java
+++ b/src/main/java/net/onrc/onos/core/devicemanager/IOnosDeviceListener.java
@@ -3,5 +3,6 @@
 public interface IOnosDeviceListener {
 
     public void onosDeviceAdded(OnosDevice device);
+
     public void onosDeviceRemoved(OnosDevice device);
 }
diff --git a/src/main/java/net/onrc/onos/core/devicemanager/IOnosDeviceService.java b/src/main/java/net/onrc/onos/core/devicemanager/IOnosDeviceService.java
index f343308..9eb6e31 100644
--- a/src/main/java/net/onrc/onos/core/devicemanager/IOnosDeviceService.java
+++ b/src/main/java/net/onrc/onos/core/devicemanager/IOnosDeviceService.java
@@ -5,20 +5,20 @@
 
 /**
  * {@link OnosDeviceManager} doesn't yet provide any API to fellow modules,
- * however making it export a dummy service means we can specify it as 
+ * however making it export a dummy service means we can specify it as
  * a dependency of Forwarding
- * @author jono
  *
+ * @author jono
  */
 public interface IOnosDeviceService extends IFloodlightService {
 
-	public void addOnosDeviceListener(IOnosDeviceListener listener);
-	
-	public void deleteOnosDeviceListener(IOnosDeviceListener listener);	
-	
-	public void deleteOnosDevice(OnosDevice dev);
+    public void addOnosDeviceListener(IOnosDeviceListener listener);
 
-	public void deleteOnosDeviceByMac(MACAddress mac);
-	
-	public void addOnosDevice(Long mac, OnosDevice dev);
+    public void deleteOnosDeviceListener(IOnosDeviceListener listener);
+
+    public void deleteOnosDevice(OnosDevice dev);
+
+    public void deleteOnosDeviceByMac(MACAddress mac);
+
+    public void addOnosDevice(Long mac, OnosDevice dev);
 }
diff --git a/src/main/java/net/onrc/onos/core/devicemanager/OnosDevice.java b/src/main/java/net/onrc/onos/core/devicemanager/OnosDevice.java
index 4ff17a3..adac787 100644
--- a/src/main/java/net/onrc/onos/core/devicemanager/OnosDevice.java
+++ b/src/main/java/net/onrc/onos/core/devicemanager/OnosDevice.java
@@ -1,19 +1,19 @@
 /**
-l*    Copyright 2011,2012, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ l*    Copyright 2011,2012, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.devicemanager;
 
@@ -29,63 +29,63 @@
  * with a particular VLAN tag, and a particular MAC address, along with any
  * other packet characteristics we might want to consider as helpful for
  * disambiguating devices.
- * 
+ * <p/>
  * Entities are the most basic element of devices; devices consist of one or
  * more entities.  Entities are immutable once created, except for the last
  * seen timestamp.
- *  
- * @author readams
  *
+ * @author readams
  */
 public class OnosDevice implements Serializable { //implements Comparable<OnosDevice> {
 
     private static int ACTIVITY_TIMEOUT = 30000;
-    
+
     /**
      * The MAC address associated with this entity
      */
     private MACAddress macAddress;
-    
+
     /**
      * The IP address associated with this entity, or null if no IP learned
      * from the network observation associated with this entity
      */
     private Integer ipv4Address;
-    
+
     /**
      * The VLAN tag on this entity, or null if untagged
      */
     private Short vlan;
-    
+
     /**
      * The DPID of the switch for the ingress point for this entity,
      * or null if not present
      */
     private long switchDPID;
-    
+
     /**
      * The port number of the switch for the ingress point for this entity,
      * or null if not present
      */
     private short switchPort;
-    
+
     /**
      * The last time we observed this entity on the network
      */
     private Date lastSeenTimestamp;
 
     private Date activeSince;
-    
+
     private int hashCode = 0;
 
     // ************
     // Constructors
     // ************
-     protected OnosDevice() {}
-     
+    protected OnosDevice() {
+    }
+
     /**
      * Create a new entity
-     * 
+     *
      * @param macAddress
      * @param vlan
      * @param ipv4Address
@@ -93,9 +93,9 @@
      * @param switchPort
      * @param lastSeenTimestamp
      */
-    public OnosDevice(MACAddress macAddress, Short vlan, 
-                  Integer ipv4Address, Long switchDPID, short switchPort, 
-                  Date lastSeenTimestamp) {
+    public OnosDevice(MACAddress macAddress, Short vlan,
+                      Integer ipv4Address, Long switchDPID, short switchPort,
+                      Date lastSeenTimestamp) {
         this.macAddress = macAddress;
         this.ipv4Address = ipv4Address;
         this.vlan = vlan;
@@ -116,9 +116,9 @@
     public Integer getIpv4Address() {
         return ipv4Address;
     }
-    
+
     public void setIpv4Address(Integer ipv4Address) {
-    	this.ipv4Address = ipv4Address;
+        this.ipv4Address = ipv4Address;
     }
 
     public Short getVlan() {
@@ -128,28 +128,28 @@
     public Long getSwitchDPID() {
         return switchDPID;
     }
-    
+
     public void setSwitchDPID(long dpid) {
-    	this.switchDPID = dpid;
+        this.switchDPID = dpid;
     }
 
     public short getSwitchPort() {
         return switchPort;
     }
-    
+
     public void setSwitchPort(short port) {
-    	this.switchPort = port;
+        this.switchPort = port;
     }
 
     public Date getLastSeenTimestamp() {
         return lastSeenTimestamp;
     }
 
-    
+
     public void setLastSeenTimestamp(Date lastSeenTimestamp) {
         if (activeSince == null ||
-            (activeSince.getTime() +  ACTIVITY_TIMEOUT) <
-                lastSeenTimestamp.getTime())
+                (activeSince.getTime() + ACTIVITY_TIMEOUT) <
+                        lastSeenTimestamp.getTime())
             this.activeSince = lastSeenTimestamp;
         this.lastSeenTimestamp = lastSeenTimestamp;
     }
@@ -161,17 +161,17 @@
     public void setActiveSince(Date activeSince) {
         this.activeSince = activeSince;
     }
-    
+
     @Override
     public int hashCode() {
         if (hashCode != 0) return hashCode;
         final int prime = 31;
         hashCode = 1;
         hashCode = prime * hashCode
-                 + ((ipv4Address == null) ? 0 : ipv4Address.hashCode());
+                + ((ipv4Address == null) ? 0 : ipv4Address.hashCode());
         hashCode = prime * hashCode + (int) (macAddress.toLong() ^ (macAddress.toLong() >>> 32));
-        hashCode = prime * hashCode + (int)switchDPID;
-        hashCode = prime * hashCode + (int)switchPort;
+        hashCode = prime * hashCode + (int) switchDPID;
+        hashCode = prime * hashCode + (int) switchPort;
         hashCode = prime * hashCode + ((vlan == null) ? 0 : vlan.hashCode());
         return hashCode;
     }
@@ -185,26 +185,26 @@
         if (hashCode() != other.hashCode()) return false;
         if (ipv4Address == null) {
             if (other.ipv4Address != null) return false;
-        } else if (!ipv4Address.equals(other.ipv4Address)) return false; 
+        } else if (!ipv4Address.equals(other.ipv4Address)) return false;
         if (macAddress == null) {
             if (other.macAddress != null) return false;
         } else if (!macAddress.equals(other.macAddress)) return false;
-        if(switchDPID != other.switchDPID) return false;
+        if (switchDPID != other.switchDPID) return false;
         if (switchPort != other.switchPort) return false;
         if (vlan == null) {
             if (other.vlan != null) return false;
         } else if (!vlan.equals(other.vlan)) return false;
         return true;
     }
-    
+
     @Override
     public String toString() {
         StringBuilder builder = new StringBuilder();
         builder.append("Entity [macAddress=");
         builder.append(macAddress.toString());
         builder.append(", ipv4Address=");
-        builder.append(IPv4.fromIPv4Address(ipv4Address==null ?
-                       0 : ipv4Address.intValue()));
+        builder.append(IPv4.fromIPv4Address(ipv4Address == null ?
+                0 : ipv4Address.intValue()));
         builder.append(", vlan=");
         builder.append(vlan);
         builder.append(", switchDPID=");
@@ -212,9 +212,9 @@
         builder.append(", switchPort=");
         builder.append(switchPort);
         builder.append(", lastSeenTimestamp=");
-        builder.append(lastSeenTimestamp == null? "null" : lastSeenTimestamp.getTime());
+        builder.append(lastSeenTimestamp == null ? "null" : lastSeenTimestamp.getTime());
         builder.append(", activeSince=");
-        builder.append(activeSince == null? "null" : activeSince.getTime());
+        builder.append(activeSince == null ? "null" : activeSince.getTime());
         builder.append("]");
         return builder.toString();
     }
@@ -260,5 +260,5 @@
 
         return 0;
     }*/
-    
+
 }
diff --git a/src/main/java/net/onrc/onos/core/devicemanager/OnosDeviceManager.java b/src/main/java/net/onrc/onos/core/devicemanager/OnosDeviceManager.java
index cd4fa0d..22a564b 100644
--- a/src/main/java/net/onrc/onos/core/devicemanager/OnosDeviceManager.java
+++ b/src/main/java/net/onrc/onos/core/devicemanager/OnosDeviceManager.java
@@ -42,173 +42,174 @@
 import org.slf4j.LoggerFactory;
 
 public class OnosDeviceManager implements IFloodlightModule,
-					  IOFMessageListener,
-					  IOnosDeviceService,
-					  IEventChannelListener<Long, OnosDevice> {
-	protected final static Logger log = LoggerFactory.getLogger(OnosDeviceManager.class);
-	private static final int CLEANUP_SECOND = 60*60;
-	private static final int AGEING_MILLSEC = 60*60*1000;
+        IOFMessageListener,
+        IOnosDeviceService,
+        IEventChannelListener<Long, OnosDevice> {
+    protected final static Logger log = LoggerFactory.getLogger(OnosDeviceManager.class);
+    private static final int CLEANUP_SECOND = 60 * 60;
+    private static final int AGEING_MILLSEC = 60 * 60 * 1000;
 
-	private CopyOnWriteArrayList<IOnosDeviceListener> deviceListeners;
-	private IFloodlightProviderService floodlightProvider;
-	private final static ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
+    private CopyOnWriteArrayList<IOnosDeviceListener> deviceListeners;
+    private IFloodlightProviderService floodlightProvider;
+    private final static ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
 
-	private IDatagridService datagrid;
-	private IEventChannel<Long, OnosDevice> eventChannel;
-	private static final String DEVICE_CHANNEL_NAME = "onos.device";
-	private Map<Long, OnosDevice> mapDevice = new ConcurrentHashMap<Long, OnosDevice>();
-	private INetworkGraphService networkGraphService;
-	private NetworkGraph networkGraph;
+    private IDatagridService datagrid;
+    private IEventChannel<Long, OnosDevice> eventChannel;
+    private static final String DEVICE_CHANNEL_NAME = "onos.device";
+    private Map<Long, OnosDevice> mapDevice = new ConcurrentHashMap<Long, OnosDevice>();
+    private INetworkGraphService networkGraphService;
+    private NetworkGraph networkGraph;
 
     public enum OnosDeviceUpdateType {
         ADD, DELETE, UPDATE;
     }
 
-	private class OnosDeviceUpdate implements IUpdate {
-		private OnosDevice device;
-		private OnosDeviceUpdateType type;
+    private class OnosDeviceUpdate implements IUpdate {
+        private OnosDevice device;
+        private OnosDeviceUpdateType type;
 
-		public OnosDeviceUpdate(OnosDevice device, OnosDeviceUpdateType type) {
-			this.device = device;
-			this.type = type;
-		}
+        public OnosDeviceUpdate(OnosDevice device, OnosDeviceUpdateType type) {
+            this.device = device;
+            this.type = type;
+        }
 
-		@Override
-		public void dispatch() {
-			if(type == OnosDeviceUpdateType.ADD) {
-				for(IOnosDeviceListener listener: deviceListeners) {
-					listener.onosDeviceAdded(device);
-				}
-			} else if (type == OnosDeviceUpdateType.DELETE){
-				for(IOnosDeviceListener listener: deviceListeners) {
-					listener.onosDeviceRemoved(device);
-				}
-			}
-		}
-	}
+        @Override
+        public void dispatch() {
+            if (type == OnosDeviceUpdateType.ADD) {
+                for (IOnosDeviceListener listener : deviceListeners) {
+                    listener.onosDeviceAdded(device);
+                }
+            } else if (type == OnosDeviceUpdateType.DELETE) {
+                for (IOnosDeviceListener listener : deviceListeners) {
+                    listener.onosDeviceRemoved(device);
+                }
+            }
+        }
+    }
 
-	@Override
-	public String getName() {
-		return "onosdevicemanager";
-	}
+    @Override
+    public String getName() {
+        return "onosdevicemanager";
+    }
 
-	@Override
-	public boolean isCallbackOrderingPrereq(OFType type, String name) {
-		// We want link discovery to consume LLDP first otherwise we'll
-		// end up reading bad device info from LLDP packets
-		return type == OFType.PACKET_IN && "linkdiscovery".equals(name);
-	}
+    @Override
+    public boolean isCallbackOrderingPrereq(OFType type, String name) {
+        // We want link discovery to consume LLDP first otherwise we'll
+        // end up reading bad device info from LLDP packets
+        return type == OFType.PACKET_IN && "linkdiscovery".equals(name);
+    }
 
-	@Override
-	public boolean isCallbackOrderingPostreq(OFType type, String name) {
-		return type == OFType.PACKET_IN &&
-				("proxyarpmanager".equals(name) || "onosforwarding".equals(name));
-	}
+    @Override
+    public boolean isCallbackOrderingPostreq(OFType type, String name) {
+        return type == OFType.PACKET_IN &&
+                ("proxyarpmanager".equals(name) || "onosforwarding".equals(name));
+    }
 
-	@Override
-	public Command receive(IOFSwitch sw, OFMessage msg, FloodlightContext cntx) {
-		if (msg.getType().equals(OFType.PACKET_IN)) {
-			OFPacketIn pi = (OFPacketIn) msg;
+    @Override
+    public Command receive(IOFSwitch sw, OFMessage msg, FloodlightContext cntx) {
+        if (msg.getType().equals(OFType.PACKET_IN)) {
+            OFPacketIn pi = (OFPacketIn) msg;
 
-			Ethernet eth = IFloodlightProviderService.bcStore.
-					get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
+            Ethernet eth = IFloodlightProviderService.bcStore.
+                    get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
 
-			return processPacketIn(sw, pi, eth);
-		}
+            return processPacketIn(sw, pi, eth);
+        }
 
-		return Command.CONTINUE;
-	}
+        return Command.CONTINUE;
+    }
 
-	private Command processPacketIn(IOFSwitch sw, OFPacketIn pi, Ethernet eth) {
-        long dpid =sw.getId();
+    private Command processPacketIn(IOFSwitch sw, OFPacketIn pi, Ethernet eth) {
+        long dpid = sw.getId();
         short portId = pi.getInPort();
         Long mac = eth.getSourceMAC().toLong();
 
         OnosDevice srcDevice =
                 getSourceDeviceFromPacket(eth, dpid, portId);
 
-        if (srcDevice == null){
-        	return Command.STOP;
+        if (srcDevice == null) {
+            return Command.STOP;
         }
 
         //We check if it is the same device in datagrid to suppress the device update
         OnosDevice exDev = null;
-        if((exDev = mapDevice.get(mac)) != null ){
-	    	if(exDev.equals(srcDevice)) {
-	    		//There is the same existing device. Update only ActiveSince time.
-	        	exDev.setLastSeenTimestamp(new Date());
-	        	if(log.isTraceEnabled()) {
-			        log.debug("In the datagrid, there is the same device."
-							+ "Only update last seen time. dpid {}, port {}, mac {}, ip {}, lastSeenTime {}",
-			        		dpid, portId, srcDevice.getMacAddress(), srcDevice.getIpv4Address(), srcDevice.getLastSeenTimestamp().getTime());
-	        	}
-		        return Command.CONTINUE;
-	    	} else if (srcDevice.getIpv4Address() == null &&
-	    			exDev.getSwitchDPID().equals(srcDevice.getSwitchDPID()) &&
-	    			exDev.getSwitchPort() == srcDevice.getSwitchPort()) {
-	    			//Vlan should be handled based on the Onos spec. Until then, don't handle it.
-		    		//Device attachment point and mac address are the same
-		    		//but the packet does not have an ip address.
-		        	exDev.setLastSeenTimestamp(new Date());
-		        	if(log.isTraceEnabled()) {
-			        	log.debug("In the datagrid, there is the same device with no ip."
-								+ "Keep ip and update last seen time. dpid {}, port {}, mac {}, ip {} lastSeenTime {}",
-								dpid, portId, srcDevice.getMacAddress(), exDev.getIpv4Address(), srcDevice.getLastSeenTimestamp().getTime());
-		        	}
-		        	return Command.CONTINUE;
-	    		}
-	    	}
+        if ((exDev = mapDevice.get(mac)) != null) {
+            if (exDev.equals(srcDevice)) {
+                //There is the same existing device. Update only ActiveSince time.
+                exDev.setLastSeenTimestamp(new Date());
+                if (log.isTraceEnabled()) {
+                    log.debug("In the datagrid, there is the same device."
+                            + "Only update last seen time. dpid {}, port {}, mac {}, ip {}, lastSeenTime {}",
+                            dpid, portId, srcDevice.getMacAddress(), srcDevice.getIpv4Address(), srcDevice.getLastSeenTimestamp().getTime());
+                }
+                return Command.CONTINUE;
+            } else if (srcDevice.getIpv4Address() == null &&
+                    exDev.getSwitchDPID().equals(srcDevice.getSwitchDPID()) &&
+                    exDev.getSwitchPort() == srcDevice.getSwitchPort()) {
+                //Vlan should be handled based on the Onos spec. Until then, don't handle it.
+                //Device attachment point and mac address are the same
+                //but the packet does not have an ip address.
+                exDev.setLastSeenTimestamp(new Date());
+                if (log.isTraceEnabled()) {
+                    log.debug("In the datagrid, there is the same device with no ip."
+                            + "Keep ip and update last seen time. dpid {}, port {}, mac {}, ip {} lastSeenTime {}",
+                            dpid, portId, srcDevice.getMacAddress(), exDev.getIpv4Address(), srcDevice.getLastSeenTimestamp().getTime());
+                }
+                return Command.CONTINUE;
+            }
+        }
 
         //If the switch port we try to attach a new device already has a link, then stop adding device
-        if(networkGraph.getLink(dpid, (long)portId) != null) {
-			if(log.isTraceEnabled()) {
-    			log.debug("Stop adding OnosDevice {} due to there is a link to: dpid {} port {}",
-						srcDevice.getMacAddress(), dpid, portId);
-			}
-			return Command.CONTINUE;
+        if (networkGraph.getLink(dpid, (long) portId) != null) {
+            if (log.isTraceEnabled()) {
+                log.debug("Stop adding OnosDevice {} due to there is a link to: dpid {} port {}",
+                        srcDevice.getMacAddress(), dpid, portId);
+            }
+            return Command.CONTINUE;
         }
 
         addOnosDevice(mac, srcDevice);
 
-        if(log.isTraceEnabled()) {
-	        log.debug("Add device info in the set. dpid {}, port {}, mac {}, ip {}, lastSeenTime {}",
-	       		dpid, portId, srcDevice.getMacAddress(), srcDevice.getIpv4Address(), srcDevice.getLastSeenTimestamp().getTime());
+        if (log.isTraceEnabled()) {
+            log.debug("Add device info in the set. dpid {}, port {}, mac {}, ip {}, lastSeenTime {}",
+                    dpid, portId, srcDevice.getMacAddress(), srcDevice.getIpv4Address(), srcDevice.getLastSeenTimestamp().getTime());
         }
         return Command.CONTINUE;
-	}
+    }
 
-     //Thread to delete devices periodically.
-	 //Remove all devices from the map first and then finally delete devices from the DB.
-	private class CleanDevice implements Runnable {
-		@Override
-		public void run() {
-			log.debug("called CleanDevice");
-			try{
-		        	Set<OnosDevice> deleteSet = new HashSet<OnosDevice>();
-			        for (OnosDevice dev : mapDevice.values() ) {
-			        	long now = new Date().getTime();
-			        	if((now - dev.getLastSeenTimestamp().getTime() > AGEING_MILLSEC)) {
-			        		if(log.isTraceEnabled()) {
-			        			log.debug("Remove device info in the datagrid. dpid {}, port {}, mac {}, ip {}, lastSeenTime {}, diff {}",
-				        				dev.getSwitchDPID(), dev.getSwitchPort(), dev.getMacAddress(), dev.getIpv4Address(),
-				        				dev.getLastSeenTimestamp().getTime(), now - dev.getLastSeenTimestamp().getTime());
-			        		}
-			        		deleteSet.add(dev);
-			        	}
-			        }
+    //Thread to delete devices periodically.
+    //Remove all devices from the map first and then finally delete devices from the DB.
+    private class CleanDevice implements Runnable {
+        @Override
+        public void run() {
+            log.debug("called CleanDevice");
+            try {
+                Set<OnosDevice> deleteSet = new HashSet<OnosDevice>();
+                for (OnosDevice dev : mapDevice.values()) {
+                    long now = new Date().getTime();
+                    if ((now - dev.getLastSeenTimestamp().getTime() > AGEING_MILLSEC)) {
+                        if (log.isTraceEnabled()) {
+                            log.debug("Remove device info in the datagrid. dpid {}, port {}, mac {}, ip {}, lastSeenTime {}, diff {}",
+                                    dev.getSwitchDPID(), dev.getSwitchPort(), dev.getMacAddress(), dev.getIpv4Address(),
+                                    dev.getLastSeenTimestamp().getTime(), now - dev.getLastSeenTimestamp().getTime());
+                        }
+                        deleteSet.add(dev);
+                    }
+                }
 
-			        for(OnosDevice dev : deleteSet) {
-			        	deleteOnosDevice(dev);
-			        }
-			 } catch(Exception e) {
-		    	 log.error("Error:", e);
-		     }
-		}
-	}
+                for (OnosDevice dev : deleteSet) {
+                    deleteOnosDevice(dev);
+                }
+            } catch (Exception e) {
+                log.error("Error:", e);
+            }
+        }
+    }
 
     /**
      * Get IP address from packet if the packet is either an ARP
      * or a DHCP packet
+     *
      * @param eth
      * @param dlAddr
      * @return
@@ -223,9 +224,9 @@
         } else if (eth.getPayload() instanceof IPv4) {
             IPv4 ipv4 = (IPv4) eth.getPayload();
             if (ipv4.getPayload() instanceof UDP) {
-                UDP udp = (UDP)ipv4.getPayload();
+                UDP udp = (UDP) ipv4.getPayload();
                 if (udp.getPayload() instanceof DHCP) {
-                    DHCP dhcp = (DHCP)udp.getPayload();
+                    DHCP dhcp = (DHCP) udp.getPayload();
                     if (dhcp.getOpCode() == DHCP.OPCODE_REPLY) {
                         return ipv4.getSourceAddress();
                     }
@@ -237,14 +238,15 @@
 
     /**
      * Parse an entity from an {@link Ethernet} packet.
+     *
      * @param eth the packet to parse
-     * @param sw the switch on which the packet arrived
-     * @param pi the original packetin
+     * @param sw  the switch on which the packet arrived
+     * @param pi  the original packetin
      * @return the entity from the packet
      */
     private OnosDevice getSourceDeviceFromPacket(Ethernet eth,
-                                             long swdpid,
-                                             short port) {
+                                                 long swdpid,
+                                                 short port) {
         byte[] dlAddrArr = eth.getSourceMACAddress();
         long dlAddr = Ethernet.toLong(dlAddrArr);
 
@@ -255,106 +257,106 @@
         short vlan = eth.getVlanID();
         int nwSrc = getSrcNwAddr(eth, dlAddr);
         return new OnosDevice(MACAddress.valueOf(dlAddr),
-                          ((vlan >= 0) ? vlan : null),
-                          ((nwSrc != 0) ? nwSrc : null),
-                          swdpid,
-                          port,
-                          new Date());
+                ((vlan >= 0) ? vlan : null),
+                ((nwSrc != 0) ? nwSrc : null),
+                swdpid,
+                port,
+                new Date());
     }
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-		List<Class<? extends IFloodlightService>> services =
-				new ArrayList<Class<? extends IFloodlightService>>();
-		services.add(IOnosDeviceService.class);
-		return services;
-	}
-
-	@Override
-	public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
-		Map<Class<? extends IFloodlightService>, IFloodlightService> impls =
-				new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
-		impls.put(IOnosDeviceService.class, this);
-		return impls;
-	}
-
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
-		List<Class<? extends IFloodlightService>> dependencies =
-				new ArrayList<Class<? extends IFloodlightService>>();
-		dependencies.add(IFloodlightProviderService.class);
-		dependencies.add(INetworkGraphService.class);
-		dependencies.add(IDatagridService.class);
-		return dependencies;
-	}
-
-	@Override
-	public void init(FloodlightModuleContext context)
-			throws FloodlightModuleException {
-		floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
-		executor.scheduleAtFixedRate(new CleanDevice(), 30 ,CLEANUP_SECOND, TimeUnit.SECONDS);
-
-		deviceListeners = new CopyOnWriteArrayList<IOnosDeviceListener>();
-		datagrid = context.getServiceImpl(IDatagridService.class);
-		networkGraphService = context.getServiceImpl(INetworkGraphService.class);
-		networkGraph = networkGraphService.getNetworkGraph();
-	}
-
-	@Override
-	public void startUp(FloodlightModuleContext context) {
-		floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this);
-		eventChannel = datagrid.addListener(DEVICE_CHANNEL_NAME, this,
-						    Long.class,
-						    OnosDevice.class);
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleServices() {
+        List<Class<? extends IFloodlightService>> services =
+                new ArrayList<Class<? extends IFloodlightService>>();
+        services.add(IOnosDeviceService.class);
+        return services;
+    }
 
     @Override
-	public void deleteOnosDevice(OnosDevice dev) {
-	    Long mac = dev.getMacAddress().toLong();
-	    eventChannel.removeEntry(mac);
-	    floodlightProvider.publishUpdate(new OnosDeviceUpdate(dev, OnosDeviceUpdateType.DELETE));
-	}
-    
+    public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
+        Map<Class<? extends IFloodlightService>, IFloodlightService> impls =
+                new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
+        impls.put(IOnosDeviceService.class, this);
+        return impls;
+    }
+
     @Override
-	public void deleteOnosDeviceByMac(MACAddress mac) {
-    	OnosDevice deleteDevice = mapDevice.get(mac);
-    	deleteOnosDevice(deleteDevice);
-	}
-	
-	@Override
-	public void addOnosDevice(Long mac, OnosDevice dev) {
-	    eventChannel.addEntry(mac, dev);
-	    floodlightProvider.publishUpdate(new OnosDeviceUpdate(dev, OnosDeviceUpdateType.ADD));
-	}
+    public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
+        List<Class<? extends IFloodlightService>> dependencies =
+                new ArrayList<Class<? extends IFloodlightService>>();
+        dependencies.add(IFloodlightProviderService.class);
+        dependencies.add(INetworkGraphService.class);
+        dependencies.add(IDatagridService.class);
+        return dependencies;
+    }
 
-	@Override
-	public void entryAdded(OnosDevice dev) {
-	    Long mac = dev.getMacAddress().toLong();
-	    mapDevice.put(mac, dev);
-	    log.debug("Device added: device mac {}", mac);
-	}
+    @Override
+    public void init(FloodlightModuleContext context)
+            throws FloodlightModuleException {
+        floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
+        executor.scheduleAtFixedRate(new CleanDevice(), 30, CLEANUP_SECOND, TimeUnit.SECONDS);
 
-	@Override
-	public void entryRemoved(OnosDevice dev) {
-	    Long mac = dev.getMacAddress().toLong();
-	    mapDevice.remove(mac);
-	    log.debug("Device removed: device mac {}", mac);
-	}
+        deviceListeners = new CopyOnWriteArrayList<IOnosDeviceListener>();
+        datagrid = context.getServiceImpl(IDatagridService.class);
+        networkGraphService = context.getServiceImpl(INetworkGraphService.class);
+        networkGraph = networkGraphService.getNetworkGraph();
+    }
 
-	@Override
-	public void entryUpdated(OnosDevice dev) {
-	    Long mac = dev.getMacAddress().toLong();
-	    mapDevice.put(mac, dev);
-	    log.debug("Device updated: device mac {}", mac);
-	}
+    @Override
+    public void startUp(FloodlightModuleContext context) {
+        floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this);
+        eventChannel = datagrid.addListener(DEVICE_CHANNEL_NAME, this,
+                Long.class,
+                OnosDevice.class);
+    }
 
-	@Override
-	public void addOnosDeviceListener(IOnosDeviceListener listener) {
-		deviceListeners.add(listener);
-	}
+    @Override
+    public void deleteOnosDevice(OnosDevice dev) {
+        Long mac = dev.getMacAddress().toLong();
+        eventChannel.removeEntry(mac);
+        floodlightProvider.publishUpdate(new OnosDeviceUpdate(dev, OnosDeviceUpdateType.DELETE));
+    }
 
-	@Override
-	public void deleteOnosDeviceListener(IOnosDeviceListener listener) {
-		deviceListeners.remove(listener);
-	}
+    @Override
+    public void deleteOnosDeviceByMac(MACAddress mac) {
+        OnosDevice deleteDevice = mapDevice.get(mac);
+        deleteOnosDevice(deleteDevice);
+    }
+
+    @Override
+    public void addOnosDevice(Long mac, OnosDevice dev) {
+        eventChannel.addEntry(mac, dev);
+        floodlightProvider.publishUpdate(new OnosDeviceUpdate(dev, OnosDeviceUpdateType.ADD));
+    }
+
+    @Override
+    public void entryAdded(OnosDevice dev) {
+        Long mac = dev.getMacAddress().toLong();
+        mapDevice.put(mac, dev);
+        log.debug("Device added: device mac {}", mac);
+    }
+
+    @Override
+    public void entryRemoved(OnosDevice dev) {
+        Long mac = dev.getMacAddress().toLong();
+        mapDevice.remove(mac);
+        log.debug("Device removed: device mac {}", mac);
+    }
+
+    @Override
+    public void entryUpdated(OnosDevice dev) {
+        Long mac = dev.getMacAddress().toLong();
+        mapDevice.put(mac, dev);
+        log.debug("Device updated: device mac {}", mac);
+    }
+
+    @Override
+    public void addOnosDeviceListener(IOnosDeviceListener listener) {
+        deviceListeners.add(listener);
+    }
+
+    @Override
+    public void deleteOnosDeviceListener(IOnosDeviceListener listener) {
+        deviceListeners.remove(listener);
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/flowprogrammer/IFlowPusherService.java b/src/main/java/net/onrc/onos/core/flowprogrammer/IFlowPusherService.java
index 89c6599..25b8044 100644
--- a/src/main/java/net/onrc/onos/core/flowprogrammer/IFlowPusherService.java
+++ b/src/main/java/net/onrc/onos/core/flowprogrammer/IFlowPusherService.java
@@ -24,7 +24,7 @@
     public static enum MsgPriority {
         HIGH,        // High priority: e.g. flow synchronization
         NORMAL,        // Normal priority
-//		LOW,		// Low priority, not needed for now
+//              LOW,            // Low priority, not needed for now
     }
 
     public static enum QueueState {
diff --git a/src/main/java/net/onrc/onos/core/intent/Action.java b/src/main/java/net/onrc/onos/core/intent/Action.java
index 71c7183..6490fe5 100644
--- a/src/main/java/net/onrc/onos/core/intent/Action.java
+++ b/src/main/java/net/onrc/onos/core/intent/Action.java
@@ -3,9 +3,7 @@
 import net.onrc.onos.core.util.FlowEntryAction;
 
 /**
- * 
  * @author Brian O'Connor <bocon@onlab.us>
- *
  */
 
 public abstract class Action {
diff --git a/src/main/java/net/onrc/onos/core/intent/ConstrainedBFSTree.java b/src/main/java/net/onrc/onos/core/intent/ConstrainedBFSTree.java
index fece148..c72ef4e 100644
--- a/src/main/java/net/onrc/onos/core/intent/ConstrainedBFSTree.java
+++ b/src/main/java/net/onrc/onos/core/intent/ConstrainedBFSTree.java
@@ -15,58 +15,62 @@
  * which satisfies the bandwidth condition.
  * If bandwidth parameter is not specified, the normal breadth first tree will be calculated.
  * The paths are snapshot paths at the point of the class instantiation.
+ *
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class ConstrainedBFSTree {
-	LinkedList<Switch> switchQueue = new LinkedList<>();
-	HashSet<Switch> switchSearched = new HashSet<>();
-	HashMap<Long, LinkEvent> upstreamLinks = new HashMap<>();
-	HashMap<Switch, Path> paths = new HashMap<>();
-	Switch rootSwitch;
-	PathIntentMap intents = null;
-	double bandwidth = 0.0; // 0.0 means no limit for bandwidth (normal BFS tree)
+    LinkedList<Switch> switchQueue = new LinkedList<>();
+    HashSet<Switch> switchSearched = new HashSet<>();
+    HashMap<Long, LinkEvent> upstreamLinks = new HashMap<>();
+    HashMap<Switch, Path> paths = new HashMap<>();
+    Switch rootSwitch;
+    PathIntentMap intents = null;
+    double bandwidth = 0.0; // 0.0 means no limit for bandwidth (normal BFS tree)
 
-	public ConstrainedBFSTree(Switch rootSwitch) {
-		this.rootSwitch = rootSwitch;
-		calcTree();
-	}
+    public ConstrainedBFSTree(Switch rootSwitch) {
+        this.rootSwitch = rootSwitch;
+        calcTree();
+    }
 
-	public ConstrainedBFSTree(Switch rootSwitch, PathIntentMap intents, double bandwidth) {
-		this.rootSwitch = rootSwitch;
-		this.intents = intents;
-		this.bandwidth = bandwidth;
-		calcTree();
-	}
+    public ConstrainedBFSTree(Switch rootSwitch, PathIntentMap intents, double bandwidth) {
+        this.rootSwitch = rootSwitch;
+        this.intents = intents;
+        this.bandwidth = bandwidth;
+        calcTree();
+    }
 
-	protected void calcTree() {
-		switchQueue.add(rootSwitch);
-		switchSearched.add(rootSwitch);
-		while (!switchQueue.isEmpty()) {
-			Switch sw = switchQueue.poll();
-			for (Link link: sw.getOutgoingLinks()) {
-				Switch reachedSwitch = link.getDstPort().getSwitch();
-				if (switchSearched.contains(reachedSwitch)) continue;
-				if (intents != null && intents.getAvailableBandwidth(link) < bandwidth) continue;
-				switchQueue.add(reachedSwitch);
-				switchSearched.add(reachedSwitch);
-				upstreamLinks.put(reachedSwitch.getDpid(), new LinkEvent(link));
-			}
-		}
-	}
+    protected void calcTree() {
+        switchQueue.add(rootSwitch);
+        switchSearched.add(rootSwitch);
+        while (!switchQueue.isEmpty()) {
+            Switch sw = switchQueue.poll();
+            for (Link link : sw.getOutgoingLinks()) {
+                Switch reachedSwitch = link.getDstPort().getSwitch();
+                if (switchSearched.contains(reachedSwitch)) continue;
+                if (intents != null &&
+                    intents.getAvailableBandwidth(link) < bandwidth) {
+                    continue;
+                }
+                switchQueue.add(reachedSwitch);
+                switchSearched.add(reachedSwitch);
+                upstreamLinks.put(reachedSwitch.getDpid(), new LinkEvent(link));
+            }
+        }
+    }
 
-	public Path getPath(Switch leafSwitch) {
-		Path path = paths.get(leafSwitch);
-		Long rootSwitchDpid = rootSwitch.getDpid();
-		if (path == null && switchSearched.contains(leafSwitch)) {
-			path = new Path();
-			Long sw = leafSwitch.getDpid();
-			while (!sw.equals(rootSwitchDpid)) {
-				LinkEvent upstreamLink = upstreamLinks.get(sw);
-				path.add(0, upstreamLink);
-				sw = upstreamLink.getSrc().getDpid();
-			}
-			paths.put(leafSwitch, path);
-		}
-		return path;
-	}
+    public Path getPath(Switch leafSwitch) {
+        Path path = paths.get(leafSwitch);
+        Long rootSwitchDpid = rootSwitch.getDpid();
+        if (path == null && switchSearched.contains(leafSwitch)) {
+            path = new Path();
+            Long sw = leafSwitch.getDpid();
+            while (!sw.equals(rootSwitchDpid)) {
+                LinkEvent upstreamLink = upstreamLinks.get(sw);
+                path.add(0, upstreamLink);
+                sw = upstreamLink.getSrc().getDpid();
+            }
+            paths.put(leafSwitch, path);
+        }
+        return path;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/ConstrainedShortestPathIntent.java b/src/main/java/net/onrc/onos/core/intent/ConstrainedShortestPathIntent.java
index ca4f753..7f3de9b 100644
--- a/src/main/java/net/onrc/onos/core/intent/ConstrainedShortestPathIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/ConstrainedShortestPathIntent.java
@@ -4,23 +4,23 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class ConstrainedShortestPathIntent extends ShortestPathIntent {
-	protected double bandwidth;
+    protected double bandwidth;
 
-	/**
-	 * Default constructor for Kryo deserialization
-	 */
-	protected ConstrainedShortestPathIntent() {
-	}
+    /**
+     * Default constructor for Kryo deserialization
+     */
+    protected ConstrainedShortestPathIntent() {
+    }
 
-	public ConstrainedShortestPathIntent(String id,
-			long srcSwitch, long srcPort, long srcMac,
-			long dstSwitch, long dstPort, long dstMac,
-			double bandwidth) {
-		super(id, srcSwitch, srcPort, srcMac, dstSwitch, dstPort, dstMac);
-		this.bandwidth = bandwidth;
-	}
+    public ConstrainedShortestPathIntent(String id,
+                                         long srcSwitch, long srcPort, long srcMac,
+                                         long dstSwitch, long dstPort, long dstMac,
+                                         double bandwidth) {
+        super(id, srcSwitch, srcPort, srcMac, dstSwitch, dstPort, dstMac);
+        this.bandwidth = bandwidth;
+    }
 
-	public double getBandwidth() {
-		return bandwidth;
-	}
+    public double getBandwidth() {
+        return bandwidth;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/ErrorIntent.java b/src/main/java/net/onrc/onos/core/intent/ErrorIntent.java
index a5046e8..31715a8 100644
--- a/src/main/java/net/onrc/onos/core/intent/ErrorIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/ErrorIntent.java
@@ -2,29 +2,30 @@
 
 /**
  * This class is instantiated by Run-times to express intent calculation error
+ *
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class ErrorIntent extends Intent {
-	public enum ErrorType {
-		UNSUPPORTED_INTENT,
-		SWITCH_NOT_FOUND,
-		PATH_NOT_FOUND,
-	}
+    public enum ErrorType {
+        UNSUPPORTED_INTENT,
+        SWITCH_NOT_FOUND,
+        PATH_NOT_FOUND,
+    }
 
-	public ErrorType errorType;
-	public String message;
-	public Intent parentIntent;
+    public ErrorType errorType;
+    public String message;
+    public Intent parentIntent;
 
-	/**
-	 * Default constructor for Kryo deserialization
-	 */
-	protected ErrorIntent() {
-	}
+    /**
+     * Default constructor for Kryo deserialization
+     */
+    protected ErrorIntent() {
+    }
 
-	public ErrorIntent(ErrorType errorType, String message, Intent parentIntent) {
-		super(parentIntent.getId());
-		this.errorType = errorType;
-		this.message = message;
-		this.parentIntent = parentIntent;
-	}
+    public ErrorIntent(ErrorType errorType, String message, Intent parentIntent) {
+        super(parentIntent.getId());
+        this.errorType = errorType;
+        this.message = message;
+        this.parentIntent = parentIntent;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/FlowEntry.java b/src/main/java/net/onrc/onos/core/intent/FlowEntry.java
index 570f4ef..526fe5f 100644
--- a/src/main/java/net/onrc/onos/core/intent/FlowEntry.java
+++ b/src/main/java/net/onrc/onos/core/intent/FlowEntry.java
@@ -11,79 +11,77 @@
 import net.onrc.onos.core.util.FlowEntryUserState;
 
 /**
- * 
  * @author Brian O'Connor <bocon@onlab.us>
- *
  */
 
 public class FlowEntry {
-	protected long sw;
-	protected Match match;
-	protected Set<Action> actions;
-	protected Operator operator;
-	
-	public FlowEntry(long sw, long srcPort, long dstPort, 
-			 MACAddress srcMac, MACAddress dstMac,
-			 Operator operator) {
-		this.sw = sw;
-		this.match = new Match(sw, srcPort, srcMac, dstMac);
-		this.actions = new HashSet<Action>();
-		this.actions.add(new ForwardAction(dstPort));
-		this.operator = operator;
-	}
-	
-	public String toString() {
-		return match + "->" + actions;
-	}
-	
-	public long getSwitch() {
-	    return sw;
-	}
-	
-	public Operator getOperator() {
-	    return operator;
-	}
-	
-	public void setOperator(Operator op) {
-	    operator = op;
-	}
-	
-	public net.onrc.onos.core.util.FlowEntry getFlowEntry() {
-		net.onrc.onos.core.util.FlowEntry entry = new net.onrc.onos.core.util.FlowEntry();
-		entry.setDpid(new Dpid(sw));
-		entry.setFlowEntryId(new FlowEntryId(hashCode())); // naive, but useful for now
-		entry.setFlowEntryMatch(match.getFlowEntryMatch());
-		FlowEntryActions flowEntryActions = new FlowEntryActions();
-		for(Action action : actions) {
-		    flowEntryActions.addAction(action.getFlowEntryAction());
-		}
-		entry.setFlowEntryActions(flowEntryActions);
-		switch(operator) {
-		case ADD:
-		    entry.setFlowEntryUserState(FlowEntryUserState.FE_USER_MODIFY);
-		    break;
-		case REMOVE:
-		    entry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE);
-		    break;
-		default:
-		    break;
-		}
-		return entry;
-	}
-	
-	
-	public int hashCode() {
-	    return match.hashCode();
-	}
-	
-	public boolean equals(Object o) {
-	    if(!(o instanceof FlowEntry)) {
-		return false;
-	    }
-	    FlowEntry other = (FlowEntry) o;
-	    // Note: we should not consider the operator for this comparison
-	    return this.match.equals(other.match) 
-		&& this.actions.containsAll(other.actions)
-		&& other.actions.containsAll(this.actions);
-	}
+    protected long sw;
+    protected Match match;
+    protected Set<Action> actions;
+    protected Operator operator;
+
+    public FlowEntry(long sw, long srcPort, long dstPort,
+                     MACAddress srcMac, MACAddress dstMac,
+                     Operator operator) {
+        this.sw = sw;
+        this.match = new Match(sw, srcPort, srcMac, dstMac);
+        this.actions = new HashSet<Action>();
+        this.actions.add(new ForwardAction(dstPort));
+        this.operator = operator;
+    }
+
+    public String toString() {
+        return match + "->" + actions;
+    }
+
+    public long getSwitch() {
+        return sw;
+    }
+
+    public Operator getOperator() {
+        return operator;
+    }
+
+    public void setOperator(Operator op) {
+        operator = op;
+    }
+
+    public net.onrc.onos.core.util.FlowEntry getFlowEntry() {
+        net.onrc.onos.core.util.FlowEntry entry = new net.onrc.onos.core.util.FlowEntry();
+        entry.setDpid(new Dpid(sw));
+        entry.setFlowEntryId(new FlowEntryId(hashCode())); // naive, but useful for now
+        entry.setFlowEntryMatch(match.getFlowEntryMatch());
+        FlowEntryActions flowEntryActions = new FlowEntryActions();
+        for (Action action : actions) {
+            flowEntryActions.addAction(action.getFlowEntryAction());
+        }
+        entry.setFlowEntryActions(flowEntryActions);
+        switch (operator) {
+            case ADD:
+                entry.setFlowEntryUserState(FlowEntryUserState.FE_USER_MODIFY);
+                break;
+            case REMOVE:
+                entry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE);
+                break;
+            default:
+                break;
+        }
+        return entry;
+    }
+
+
+    public int hashCode() {
+        return match.hashCode();
+    }
+
+    public boolean equals(Object o) {
+        if (!(o instanceof FlowEntry)) {
+            return false;
+        }
+        FlowEntry other = (FlowEntry) o;
+        // Note: we should not consider the operator for this comparison
+        return this.match.equals(other.match)
+                && this.actions.containsAll(other.actions)
+                && other.actions.containsAll(this.actions);
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/ForwardAction.java b/src/main/java/net/onrc/onos/core/intent/ForwardAction.java
index 482d3f1..4e4088f 100644
--- a/src/main/java/net/onrc/onos/core/intent/ForwardAction.java
+++ b/src/main/java/net/onrc/onos/core/intent/ForwardAction.java
@@ -3,38 +3,36 @@
 import net.onrc.onos.core.util.FlowEntryAction;
 
 /**
- * 
  * @author Brian O'Connor <bocon@onlab.us>
- *
  */
 
 class ForwardAction extends Action {
-	protected long dstPort;
-	
-	public ForwardAction(long dstPort) {
-		this.dstPort = dstPort;
-	}
-	
-	public String toString() {
-		return Long.toString(dstPort);
-	}
+    protected long dstPort;
 
-	@Override
-	public FlowEntryAction getFlowEntryAction() {
-	    FlowEntryAction action = new FlowEntryAction();
-	    action.setActionOutput(new net.onrc.onos.core.util.Port((short) dstPort));
-	    return action;
-	}
+    public ForwardAction(long dstPort) {
+        this.dstPort = dstPort;
+    }
 
-	public int hashCode() {
-	    return (int) dstPort;
-	}
-	
-	public boolean equals(Object o) {
-	    if(!(o instanceof ForwardAction)) {
-		return false;
-	    }
-  	    ForwardAction action = (ForwardAction) o;
-	    return this.dstPort == action.dstPort;
-	}
+    public String toString() {
+        return Long.toString(dstPort);
+    }
+
+    @Override
+    public FlowEntryAction getFlowEntryAction() {
+        FlowEntryAction action = new FlowEntryAction();
+        action.setActionOutput(new net.onrc.onos.core.util.Port((short) dstPort));
+        return action;
+    }
+
+    public int hashCode() {
+        return (int) dstPort;
+    }
+
+    public boolean equals(Object o) {
+        if (!(o instanceof ForwardAction)) {
+            return false;
+        }
+        ForwardAction action = (ForwardAction) o;
+        return this.dstPort == action.dstPort;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/Intent.java b/src/main/java/net/onrc/onos/core/intent/Intent.java
index 3c4dbea..a8a06b0 100644
--- a/src/main/java/net/onrc/onos/core/intent/Intent.java
+++ b/src/main/java/net/onrc/onos/core/intent/Intent.java
@@ -8,95 +8,95 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class Intent {
-	public enum IntentState {
-		CREATED,
-		INST_REQ,
-		INST_NACK,
-		INST_ACK,
-		DEL_REQ,
-		DEL_PENDING,
-		DEL_ACK,
-		REROUTE_REQ,
-	}
+    public enum IntentState {
+        CREATED,
+        INST_REQ,
+        INST_NACK,
+        INST_ACK,
+        DEL_REQ,
+        DEL_PENDING,
+        DEL_ACK,
+        REROUTE_REQ,
+    }
 
-	private String id;
-	private IntentState state = IntentState.CREATED;
-	private boolean pathFrozen = false;
+    private String id;
+    private IntentState state = IntentState.CREATED;
+    private boolean pathFrozen = false;
 
-	@Optional(value="logs")
-	private LinkedList<String> logs = new LinkedList<>();
+    @Optional(value = "logs")
+    private LinkedList<String> logs = new LinkedList<>();
 
-	/**
-	 * Default constructor for Kryo deserialization
-	 */
-	protected Intent() {
-		logs.add(String.format("created, time:%d", System.nanoTime())); // for measurement
-	}
+    /**
+     * Default constructor for Kryo deserialization
+     */
+    protected Intent() {
+        logs.add(String.format("created, time:%d", System.nanoTime())); // for measurement
+    }
 
-	public Intent(String id) {
-		logs.add(String.format("created, time:%d", System.nanoTime())); // for measurement
-		this.id = id;
-	}
+    public Intent(String id) {
+        logs.add(String.format("created, time:%d", System.nanoTime())); // for measurement
+        this.id = id;
+    }
 
-	public Intent(String id, IntentState state) {
-		logs.add(String.format("created, time:%d", System.nanoTime())); // for measurement
-		setState(state);
-		this.id = id;
-	}
+    public Intent(String id, IntentState state) {
+        logs.add(String.format("created, time:%d", System.nanoTime())); // for measurement
+        setState(state);
+        this.id = id;
+    }
 
-	public String getId() {
-		return id;
-	}
+    public String getId() {
+        return id;
+    }
 
-	public IntentState getState() {
-		return state;
-	}
+    public IntentState getState() {
+        return state;
+    }
 
-	public IntentState setState(IntentState newState) {
-		logs.add(String.format("setState, oldState:%s, newState:%s, time:%d",
-				state, newState, System.nanoTime())); // for measurement
-		if (logs.size() > 20) { // TODO this size should be configurable
-			logs.removeFirst();
-		}
-		IntentState oldState = state;
-		state = newState;
-		return oldState;
-	}
+    public IntentState setState(IntentState newState) {
+        logs.add(String.format("setState, oldState:%s, newState:%s, time:%d",
+                state, newState, System.nanoTime())); // for measurement
+        if (logs.size() > 20) { // TODO this size should be configurable
+            logs.removeFirst();
+        }
+        IntentState oldState = state;
+        state = newState;
+        return oldState;
+    }
 
-	public boolean isPathFrozen() {
-		return pathFrozen;
-	}
+    public boolean isPathFrozen() {
+        return pathFrozen;
+    }
 
-	public void setPathFrozen(boolean isFrozen) {
-		pathFrozen = isFrozen;
-	}
+    public void setPathFrozen(boolean isFrozen) {
+        pathFrozen = isFrozen;
+    }
 
-	public LinkedList<String> getLogs() {
-		return logs;
-	}
+    public LinkedList<String> getLogs() {
+        return logs;
+    }
 
-	@Override
-	public int hashCode() {
-		return (id == null) ? 0 : id.hashCode();
-	}
+    @Override
+    public int hashCode() {
+        return (id == null) ? 0 : id.hashCode();
+    }
 
-	@Override
-	public boolean equals(Object obj) {
-		if (this == obj)
-			return true;
-		if ((obj == null) || (getClass() != obj.getClass()))
-			return false;
-		Intent other = (Intent) obj;
-		if (id == null) {
-			if (other.id != null)
-				return false;
-		} else if (!id.equals(other.id))
-			return false;
-		return true;
-	}
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if ((obj == null) || (getClass() != obj.getClass()))
+            return false;
+        Intent other = (Intent) obj;
+        if (id == null) {
+            if (other.id != null)
+                return false;
+        } else if (!id.equals(other.id))
+            return false;
+        return true;
+    }
 
-	@Override
-	public String toString() {
-		return id.toString() + ", " + state.toString();
-	}
+    @Override
+    public String toString() {
+        return id.toString() + ", " + state.toString();
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/IntentMap.java b/src/main/java/net/onrc/onos/core/intent/IntentMap.java
index ae314a7..e5cae77 100644
--- a/src/main/java/net/onrc/onos/core/intent/IntentMap.java
+++ b/src/main/java/net/onrc/onos/core/intent/IntentMap.java
@@ -14,177 +14,177 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class IntentMap {
-	private HashSet<ChangedListener> listeners = new HashSet<>();
-	private HashMap<String, Intent> intents = new HashMap<>();
-	private	LinkedList<ChangedEvent> events = new LinkedList<>();
+    private HashSet<ChangedListener> listeners = new HashSet<>();
+    private HashMap<String, Intent> intents = new HashMap<>();
+    private LinkedList<ChangedEvent> events = new LinkedList<>();
 
-	public enum ChangedEventType {
-		/**
-		 * Added new intent.
-		 */
-		ADDED,
+    public enum ChangedEventType {
+        /**
+         * Added new intent.
+         */
+        ADDED,
 
-		/**
-		 * Removed existing intent.
-		 * The specified intent is an instance of Intent class (not a child class)
-		 * Only id and state are valid.
-		 */
-		REMOVED,
+        /**
+         * Removed existing intent.
+         * The specified intent is an instance of Intent class (not a child class)
+         * Only id and state are valid.
+         */
+        REMOVED,
 
-		/**
-		 * Changed state of existing intent.
-		 * The specified intent is an instance of Intent class (not a child class)
-		 * Only id and state are valid.
-		 */
-		STATE_CHANGED,
-	}
+        /**
+         * Changed state of existing intent.
+         * The specified intent is an instance of Intent class (not a child class)
+         * Only id and state are valid.
+         */
+        STATE_CHANGED,
+    }
 
-	public class ChangedEvent {
-		public ChangedEvent(ChangedEventType eventType, Intent intent) {
-			this.eventType = eventType;
-			this.intent = intent;
-		}
-		public ChangedEventType eventType;
-		public Intent intent;
-	}
+    public class ChangedEvent {
+        public ChangedEvent(ChangedEventType eventType, Intent intent) {
+            this.eventType = eventType;
+            this.intent = intent;
+        }
 
-	public interface ChangedListener extends EventListener {
-		void intentsChange(LinkedList<ChangedEvent> events);
-	}
+        public ChangedEventType eventType;
+        public Intent intent;
+    }
 
-	//================================================================================
-	// public methods
-	//================================================================================
+    public interface ChangedListener extends EventListener {
+        void intentsChange(LinkedList<ChangedEvent> events);
+    }
 
-	public void executeOperations(IntentOperationList operations) {
-		for (IntentOperation operation: operations) {
-			switch (operation.operator) {
-			case ADD:
-				handleAddOperation(operation);
-				break;
-			case REMOVE:
-				handleRemoveOperation(operation);
-				break;
-			case ERROR:
-				handleErrorOperation(operation);
-				break;
-			}
-		}
-		notifyEvents();
-	}
+    //================================================================================
+    // public methods
+    //================================================================================
 
-	public void purge() {
-		LinkedList<String> removeIds = new LinkedList<>();
-		for (Entry<String, Intent> entry: intents.entrySet()) {
-			Intent intent = entry.getValue();
-			if (intent.getState() == IntentState.DEL_ACK
-					|| intent.getState() == IntentState.INST_NACK) {
-				removeIds.add(intent.getId());
-			}
-		}
-		for (String intentId: removeIds) {
-			removeIntent(intentId);
-		}
-		notifyEvents();
-	}
+    public void executeOperations(IntentOperationList operations) {
+        for (IntentOperation operation : operations) {
+            switch (operation.operator) {
+                case ADD:
+                    handleAddOperation(operation);
+                    break;
+                case REMOVE:
+                    handleRemoveOperation(operation);
+                    break;
+                case ERROR:
+                    handleErrorOperation(operation);
+                    break;
+            }
+        }
+        notifyEvents();
+    }
 
-	public void changeStates(IntentStateList states) {
-		for (Entry<String, IntentState> state: states.entrySet()) {
-			setState(state.getKey(), state.getValue());
-		}
-		notifyEvents();
-	}
+    public void purge() {
+        LinkedList<String> removeIds = new LinkedList<>();
+        for (Entry<String, Intent> entry : intents.entrySet()) {
+            Intent intent = entry.getValue();
+            if (intent.getState() == IntentState.DEL_ACK
+                    || intent.getState() == IntentState.INST_NACK) {
+                removeIds.add(intent.getId());
+            }
+        }
+        for (String intentId : removeIds) {
+            removeIntent(intentId);
+        }
+        notifyEvents();
+    }
 
-	public Intent getIntent(String intentId) {
-		return intents.get(intentId);
-	}
+    public void changeStates(IntentStateList states) {
+        for (Entry<String, IntentState> state : states.entrySet()) {
+            setState(state.getKey(), state.getValue());
+        }
+        notifyEvents();
+    }
 
-	public Collection<Intent> getAllIntents() {
-		return intents.values();
-	}
+    public Intent getIntent(String intentId) {
+        return intents.get(intentId);
+    }
 
-	public void addChangeListener(ChangedListener listener) {
-		listeners.add(listener);
-	}
+    public Collection<Intent> getAllIntents() {
+        return intents.values();
+    }
 
-	public void removeChangedListener(ChangedListener listener) {
-		listeners.remove(listener);
-	}
+    public void addChangeListener(ChangedListener listener) {
+        listeners.add(listener);
+    }
 
-	//================================================================================
-	// methods that affect intents map (protected)
-	//================================================================================
+    public void removeChangedListener(ChangedListener listener) {
+        listeners.remove(listener);
+    }
 
-	protected void putIntent(Intent intent) {
-		if (intents.containsKey(intent.getId()))
-			removeIntent(intent.getId());
-		intents.put(intent.getId(), intent);
-		events.add(new ChangedEvent(ChangedEventType.ADDED, intent));
-	}
+    //================================================================================
+    // methods that affect intents map (protected)
+    //================================================================================
 
-	protected void removeIntent(String intentId) {
-		Intent intent = intents.remove(intentId);
-		if (intent == null) return;
-		events.add(new ChangedEvent(ChangedEventType.REMOVED, intent));
-	}
+    protected void putIntent(Intent intent) {
+        if (intents.containsKey(intent.getId()))
+            removeIntent(intent.getId());
+        intents.put(intent.getId(), intent);
+        events.add(new ChangedEvent(ChangedEventType.ADDED, intent));
+    }
 
-	protected void setState(String intentId, IntentState state) {
-		Intent intent = intents.get(intentId);
-		if (intent == null) return;
-		intent.setState(state);
-		events.add(new ChangedEvent(ChangedEventType.STATE_CHANGED, intent));
-	}
+    protected void removeIntent(String intentId) {
+        Intent intent = intents.remove(intentId);
+        if (intent == null) return;
+        events.add(new ChangedEvent(ChangedEventType.REMOVED, intent));
+    }
 
-	//================================================================================
-	// helper methods (protected)
-	//================================================================================
+    protected void setState(String intentId, IntentState state) {
+        Intent intent = intents.get(intentId);
+        if (intent == null) return;
+        intent.setState(state);
+        events.add(new ChangedEvent(ChangedEventType.STATE_CHANGED, intent));
+    }
 
-	protected void handleAddOperation(IntentOperation operation) {
-		putIntent(operation.intent);
-	}
+    //================================================================================
+    // helper methods (protected)
+    //================================================================================
 
-	protected void handleRemoveOperation(IntentOperation operation) {
-		Intent intent = getIntent(operation.intent.getId());
-		if (intent == null) {
-			// TODO error handling
-		}
-		else {
-			setState(intent.getId(), IntentState.DEL_REQ);
-		}
-	}
+    protected void handleAddOperation(IntentOperation operation) {
+        putIntent(operation.intent);
+    }
 
-	protected void handleErrorOperation(IntentOperation operation) {
-		//TODO put error message into the intent
+    protected void handleRemoveOperation(IntentOperation operation) {
+        Intent intent = getIntent(operation.intent.getId());
+        if (intent == null) {
+            // TODO error handling
+        } else {
+            setState(intent.getId(), IntentState.DEL_REQ);
+        }
+    }
 
-		ErrorIntent errorIntent = (ErrorIntent) operation.intent;
-		Intent targetIntent = intents.get(errorIntent.getId());
-		if (targetIntent == null) {
-			// TODO error handling
-			return;
-		}
+    protected void handleErrorOperation(IntentOperation operation) {
+        //TODO put error message into the intent
 
-		switch (targetIntent.getState()) {
-		case CREATED:
-		case INST_REQ:
-		case INST_ACK:
-		case REROUTE_REQ:
-			setState(targetIntent.getId(), IntentState.INST_NACK);
-			break;
-		case DEL_REQ:
-			setState(targetIntent.getId(), IntentState.DEL_PENDING);
-			break;
-		case INST_NACK:
-		case DEL_PENDING:
-		case DEL_ACK:
-			// do nothing
-			break;
-		}
-	}
+        ErrorIntent errorIntent = (ErrorIntent) operation.intent;
+        Intent targetIntent = intents.get(errorIntent.getId());
+        if (targetIntent == null) {
+            // TODO error handling
+            return;
+        }
 
-	protected void notifyEvents() {
-		for (ChangedListener listener: listeners) {
-			listener.intentsChange(events);
-		}
-		events.clear();
-	}
+        switch (targetIntent.getState()) {
+            case CREATED:
+            case INST_REQ:
+            case INST_ACK:
+            case REROUTE_REQ:
+                setState(targetIntent.getId(), IntentState.INST_NACK);
+                break;
+            case DEL_REQ:
+                setState(targetIntent.getId(), IntentState.DEL_PENDING);
+                break;
+            case INST_NACK:
+            case DEL_PENDING:
+            case DEL_ACK:
+                // do nothing
+                break;
+        }
+    }
+
+    protected void notifyEvents() {
+        for (ChangedListener listener : listeners) {
+            listener.intentsChange(events);
+        }
+        events.clear();
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/IntentOperation.java b/src/main/java/net/onrc/onos/core/intent/IntentOperation.java
index 006c159..0cb42ff 100644
--- a/src/main/java/net/onrc/onos/core/intent/IntentOperation.java
+++ b/src/main/java/net/onrc/onos/core/intent/IntentOperation.java
@@ -4,37 +4,38 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class IntentOperation {
-	public enum Operator {
-		/**
-		 * Add new intent specified by intent field.
-		 */
-		ADD,
+    public enum Operator {
+        /**
+         * Add new intent specified by intent field.
+         */
+        ADD,
 
-		/**
-		 * Remove existing intent specified by intent field.
-		 * The instance of intent field should be an instance of Intent class (not a child class)
-		 */
-		REMOVE,
+        /**
+         * Remove existing intent specified by intent field.
+         * The instance of intent field should be an instance of Intent class (not a child class)
+         */
+        REMOVE,
 
-		/**
-		 * Do error handling.
-		 * The instance of intent field should be an instance of ErrorIntent
-		 */
-		ERROR,
-	}
+        /**
+         * Do error handling.
+         * The instance of intent field should be an instance of ErrorIntent
+         */
+        ERROR,
+    }
 
-	public Operator operator;
-	public Intent intent;
+    public Operator operator;
+    public Intent intent;
 
-	protected IntentOperation() {}
+    protected IntentOperation() {
+    }
 
-	public IntentOperation(Operator operator, Intent intent) {
-		this.operator = operator;
-		this.intent = intent;
-	}
+    public IntentOperation(Operator operator, Intent intent) {
+        this.operator = operator;
+        this.intent = intent;
+    }
 
-	@Override
-	public String toString() {
-		return operator.toString() + ", (" + intent.toString() + ")";
-	}
+    @Override
+    public String toString() {
+        return operator.toString() + ", (" + intent.toString() + ")";
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/IntentOperationList.java b/src/main/java/net/onrc/onos/core/intent/IntentOperationList.java
index a3981fa..7691c68 100644
--- a/src/main/java/net/onrc/onos/core/intent/IntentOperationList.java
+++ b/src/main/java/net/onrc/onos/core/intent/IntentOperationList.java
@@ -6,9 +6,9 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class IntentOperationList extends LinkedList<IntentOperation> {
-	private static final long serialVersionUID = -3894081461861052610L;
+    private static final long serialVersionUID = -3894081461861052610L;
 
-	public boolean add(IntentOperation.Operator op, Intent intent) {
-		return add(new IntentOperation(op, intent));
-	}
+    public boolean add(IntentOperation.Operator op, Intent intent) {
+        return add(new IntentOperation(op, intent));
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/Match.java b/src/main/java/net/onrc/onos/core/intent/Match.java
index 5f92254..f7a2167 100644
--- a/src/main/java/net/onrc/onos/core/intent/Match.java
+++ b/src/main/java/net/onrc/onos/core/intent/Match.java
@@ -8,59 +8,56 @@
 import net.onrc.onos.core.util.FlowEntryMatch;
 
 /**
- *
  * @author Brian O'Connor <bocon@onlab.us>
- *
  */
 
 public class Match {
-	protected long sw;
-	protected MACAddress srcMac;
-	protected MACAddress dstMac;
-	protected long srcPort;
-	
-	public Match(long sw, long srcPort, 
-		     MACAddress srcMac, MACAddress dstMac) {
-		this.sw = sw;
-		this.srcPort = srcPort;
-		this.srcMac = srcMac;
-		this.dstMac = dstMac;
-	}
+    protected long sw;
+    protected MACAddress srcMac;
+    protected MACAddress dstMac;
+    protected long srcPort;
 
-	@Override
-	public boolean equals(Object obj) {
-		if(obj instanceof Match) {
-			Match other = (Match) obj;
-			return this.sw == other.sw &&
-			       this.srcMac.equals(other.srcMac) &&
-			       this.dstMac.equals(other.dstMac) &&
-			       this.srcPort == other.srcPort;
-		}
-		else {
-			return false;
-		}
-	}
+    public Match(long sw, long srcPort,
+                 MACAddress srcMac, MACAddress dstMac) {
+        this.sw = sw;
+        this.srcPort = srcPort;
+        this.srcMac = srcMac;
+        this.dstMac = dstMac;
+    }
 
-	public FlowEntryMatch getFlowEntryMatch(){
-	    FlowEntryMatch match = new FlowEntryMatch();
-	    match.enableSrcMac(srcMac);
-	    match.enableDstMac(dstMac);
-	    match.enableInPort(new net.onrc.onos.core.util.Port((short) srcPort));
-	    return match;
-	}
+    @Override
+    public boolean equals(Object obj) {
+        if (obj instanceof Match) {
+            Match other = (Match) obj;
+            return this.sw == other.sw &&
+                    this.srcMac.equals(other.srcMac) &&
+                    this.dstMac.equals(other.dstMac) &&
+                    this.srcPort == other.srcPort;
+        } else {
+            return false;
+        }
+    }
 
-	@Override
-	public String toString() {
-		return "Sw:" + sw + " (" + srcPort + "," + srcMac + "," + dstMac + ")";
-	}
-	
-	@Override
-	public int hashCode() {
-	    long[] nums = new long[4];
-	    nums[0] = sw;
-	    nums[1] = srcPort;
-	    nums[2] = srcMac.toLong();
-	    nums[3] = dstMac.toLong();
-	    return Arrays.hashCode(nums);
-	}
+    public FlowEntryMatch getFlowEntryMatch() {
+        FlowEntryMatch match = new FlowEntryMatch();
+        match.enableSrcMac(srcMac);
+        match.enableDstMac(dstMac);
+        match.enableInPort(new net.onrc.onos.core.util.Port((short) srcPort));
+        return match;
+    }
+
+    @Override
+    public String toString() {
+        return "Sw:" + sw + " (" + srcPort + "," + srcMac + "," + dstMac + ")";
+    }
+
+    @Override
+    public int hashCode() {
+        long[] nums = new long[4];
+        nums[0] = sw;
+        nums[1] = srcPort;
+        nums[2] = srcMac.toLong();
+        nums[3] = dstMac.toLong();
+        return Arrays.hashCode(nums);
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/PathIntent.java b/src/main/java/net/onrc/onos/core/intent/PathIntent.java
index b06fb81..e541454 100644
--- a/src/main/java/net/onrc/onos/core/intent/PathIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/PathIntent.java
@@ -6,55 +6,54 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class PathIntent extends Intent {
-	protected Path path;
-	protected double bandwidth;
-	protected Intent parentIntent;
+    protected Path path;
+    protected double bandwidth;
+    protected Intent parentIntent;
 
-	public static String createFirstId(String parentId) {
-		return String.format("%s___0", parentId);
-	}
+    public static String createFirstId(String parentId) {
+        return String.format("%s___0", parentId);
+    }
 
-	public static String createNextId(String currentId) {
-		String parts[] = currentId.split("___");
-		return String.format("%s___%d", parts[0], Long.valueOf(parts[1])+1);
-	}
+    public static String createNextId(String currentId) {
+        String parts[] = currentId.split("___");
+        return String.format("%s___%d", parts[0], Long.valueOf(parts[1]) + 1);
+    }
 
-	/**
-	 * Default constructor for Kryo deserialization
-	 */
-	protected PathIntent() {
-	}
+    /**
+     * Default constructor for Kryo deserialization
+     */
+    protected PathIntent() {
+    }
 
-	/**
-	 *
-	 * @param graph
-	 * @param path
-	 * @param bandwidth bandwidth which should be allocated for the path.
-	 * If 0, no intent for bandwidth allocation (best effort).
-	 * @param parentIntent parent intent. If null, this is root intent.
-	 * @param id
-	 */
-	public PathIntent(String id, Path path, double bandwidth, Intent parentIntent) {
-		super(id);
-		this.path = path;
-		this.bandwidth = bandwidth;
-		this.parentIntent = parentIntent;
-	}
+    /**
+     * @param graph
+     * @param path
+     * @param bandwidth    bandwidth which should be allocated for the path.
+     *                     If 0, no intent for bandwidth allocation (best effort).
+     * @param parentIntent parent intent. If null, this is root intent.
+     * @param id
+     */
+    public PathIntent(String id, Path path, double bandwidth, Intent parentIntent) {
+        super(id);
+        this.path = path;
+        this.bandwidth = bandwidth;
+        this.parentIntent = parentIntent;
+    }
 
-	public double getBandwidth() {
-		return bandwidth;
-	}
+    public double getBandwidth() {
+        return bandwidth;
+    }
 
-	public Path getPath() {
-		return path;
-	}
+    public Path getPath() {
+        return path;
+    }
 
-	public Intent getParentIntent() {
-		return parentIntent;
-	}
+    public Intent getParentIntent() {
+        return parentIntent;
+    }
 
-	@Override
-	public String toString() {
-		return String.format("%s, %s, %s", getId(), getState(), getPath());
-	}
+    @Override
+    public String toString() {
+        return String.format("%s, %s, %s", getId(), getState(), getPath());
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/PathIntentMap.java b/src/main/java/net/onrc/onos/core/intent/PathIntentMap.java
index 6f66cb7..ad6b1a5 100644
--- a/src/main/java/net/onrc/onos/core/intent/PathIntentMap.java
+++ b/src/main/java/net/onrc/onos/core/intent/PathIntentMap.java
@@ -13,99 +13,100 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class PathIntentMap extends IntentMap {
-	private HashMap<Long, HashMap<Long, HashSet<PathIntent>>> intents;
+    private HashMap<Long, HashMap<Long, HashSet<PathIntent>>> intents;
 
-	public PathIntentMap() {
-		intents = new HashMap<>();
-	}
+    public PathIntentMap() {
+        intents = new HashMap<>();
+    }
 
-	private HashSet<PathIntent> get(SwitchPort swPort) {
-		Long dpid = swPort.getDpid();
-		Long port = swPort.getNumber();
-		HashMap<Long, HashSet<PathIntent>> portToIntents = intents.get(dpid);
-		if (portToIntents == null) {
-			portToIntents = new HashMap<>();
-			intents.put(dpid, portToIntents);
-		}
-		HashSet<PathIntent> targetIntents = portToIntents.get(port);
-		if (targetIntents == null) {
-			targetIntents = new HashSet<>();
-			portToIntents.put(port, targetIntents);
-		}
-		return targetIntents;
-	}
+    private HashSet<PathIntent> get(SwitchPort swPort) {
+        Long dpid = swPort.getDpid();
+        Long port = swPort.getNumber();
+        HashMap<Long, HashSet<PathIntent>> portToIntents = intents.get(dpid);
+        if (portToIntents == null) {
+            portToIntents = new HashMap<>();
+            intents.put(dpid, portToIntents);
+        }
+        HashSet<PathIntent> targetIntents = portToIntents.get(port);
+        if (targetIntents == null) {
+            targetIntents = new HashSet<>();
+            portToIntents.put(port, targetIntents);
+        }
+        return targetIntents;
+    }
 
-	private void put(SwitchPort swPort, PathIntent intent) {
-		get(swPort).add(intent);
-	}
+    private void put(SwitchPort swPort, PathIntent intent) {
+        get(swPort).add(intent);
+    }
 
-	@Override
-	protected void putIntent(Intent intent) {
-		if (!(intent instanceof PathIntent)) return; // TODO throw exception
-		super.putIntent(intent);
+    @Override
+    protected void putIntent(Intent intent) {
+        if (!(intent instanceof PathIntent)) return; // TODO throw exception
+        super.putIntent(intent);
 
-		PathIntent pathIntent = (PathIntent) intent;
-		for (LinkEvent linkEvent: pathIntent.getPath()) {
-			put(linkEvent.getSrc(), (PathIntent) intent);
-			put(linkEvent.getDst(), (PathIntent) intent);
-		}
-	}
+        PathIntent pathIntent = (PathIntent) intent;
+        for (LinkEvent linkEvent : pathIntent.getPath()) {
+            put(linkEvent.getSrc(), (PathIntent) intent);
+            put(linkEvent.getDst(), (PathIntent) intent);
+        }
+    }
 
-	@Override
-	protected void removeIntent(String intentId) {
-		PathIntent intent = (PathIntent) getIntent(intentId);
-		for (LinkEvent linkEvent: intent.getPath()) {
-			get(linkEvent.getSrc()).remove(intent);
-			get(linkEvent.getDst()).remove(intent);
-		}
-		super.removeIntent(intentId);
-	}
+    @Override
+    protected void removeIntent(String intentId) {
+        PathIntent intent = (PathIntent) getIntent(intentId);
+        for (LinkEvent linkEvent : intent.getPath()) {
+            get(linkEvent.getSrc()).remove(intent);
+            get(linkEvent.getDst()).remove(intent);
+        }
+        super.removeIntent(intentId);
+    }
 
-	public Collection<PathIntent> getIntentsByLink(LinkEvent linkEvent) {
-		return getIntentsByPort(
-				linkEvent.getSrc().getDpid(),
-				linkEvent.getSrc().getNumber());
-	}
+    public Collection<PathIntent> getIntentsByLink(LinkEvent linkEvent) {
+        return getIntentsByPort(
+                linkEvent.getSrc().getDpid(),
+                linkEvent.getSrc().getNumber());
+    }
 
-	public Collection<PathIntent> getIntentsByPort(Long dpid, Long port) {
-		HashMap<Long, HashSet<PathIntent>> portToIntents = intents.get(dpid);
-		if (portToIntents != null) {
-			HashSet<PathIntent> targetIntents = portToIntents.get(port);
-			if (targetIntents != null) {
-				return Collections.unmodifiableCollection(targetIntents);
-			}
-		}
-		return new HashSet<>();
-	}
+    public Collection<PathIntent> getIntentsByPort(Long dpid, Long port) {
+        HashMap<Long, HashSet<PathIntent>> portToIntents = intents.get(dpid);
+        if (portToIntents != null) {
+            HashSet<PathIntent> targetIntents = portToIntents.get(port);
+            if (targetIntents != null) {
+                return Collections.unmodifiableCollection(targetIntents);
+            }
+        }
+        return new HashSet<>();
+    }
 
-	public Collection<PathIntent> getIntentsByDpid(Long dpid) {
-		HashSet<PathIntent> result = new HashSet<>();
-		HashMap<Long, HashSet<PathIntent>> portToIntents = intents.get(dpid);
-		if (portToIntents != null) {
-			for (HashSet<PathIntent> targetIntents: portToIntents.values()) {
-				result.addAll(targetIntents);
-			}
-		}
-		return result;
-	}
+    public Collection<PathIntent> getIntentsByDpid(Long dpid) {
+        HashSet<PathIntent> result = new HashSet<>();
+        HashMap<Long, HashSet<PathIntent>> portToIntents = intents.get(dpid);
+        if (portToIntents != null) {
+            for (HashSet<PathIntent> targetIntents : portToIntents.values()) {
+                result.addAll(targetIntents);
+            }
+        }
+        return result;
+    }
 
-	/**
-	 * calculate available bandwidth of specified link
-	 * @param link
-	 * @return
-	 */
-	public Double getAvailableBandwidth(Link link) {
-		if (link == null) return null;
-		Double bandwidth = link.getCapacity();
-		LinkEvent linkEvent = new LinkEvent(link);
-		if (!bandwidth.isInfinite()) {
-			for (PathIntent intent: getIntentsByLink(linkEvent)) {
-				Double intentBandwidth = intent.getBandwidth();
-				if (intentBandwidth == null || intentBandwidth.isInfinite() || intentBandwidth.isNaN())
-					continue;
-				bandwidth -= intentBandwidth;
-			}
-		}
-		return bandwidth;
-	}
+    /**
+     * calculate available bandwidth of specified link
+     *
+     * @param link
+     * @return
+     */
+    public Double getAvailableBandwidth(Link link) {
+        if (link == null) return null;
+        Double bandwidth = link.getCapacity();
+        LinkEvent linkEvent = new LinkEvent(link);
+        if (!bandwidth.isInfinite()) {
+            for (PathIntent intent : getIntentsByLink(linkEvent)) {
+                Double intentBandwidth = intent.getBandwidth();
+                if (intentBandwidth == null || intentBandwidth.isInfinite() || intentBandwidth.isNaN())
+                    continue;
+                bandwidth -= intentBandwidth;
+            }
+        }
+        return bandwidth;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java b/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java
index f4bb18c..3adc756 100644
--- a/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/ShortestPathIntent.java
@@ -7,69 +7,69 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class ShortestPathIntent extends Intent {
-	protected long srcSwitchDpid;
-	protected long srcPortNumber;
-	protected long srcMacAddress;
-	protected long dstSwitchDpid;
-	protected long dstPortNumber;
-	protected long dstMacAddress;
-	protected String pathIntentId = null;
+    protected long srcSwitchDpid;
+    protected long srcPortNumber;
+    protected long srcMacAddress;
+    protected long dstSwitchDpid;
+    protected long dstPortNumber;
+    protected long dstMacAddress;
+    protected String pathIntentId = null;
 
-	/**
-	 * Default constructor for Kryo deserialization
-	 */
-	protected ShortestPathIntent() {
-	}
+    /**
+     * Default constructor for Kryo deserialization
+     */
+    protected ShortestPathIntent() {
+    }
 
-	public ShortestPathIntent(String id,
-			long srcSwitch, long srcPort, long srcMac,
-			long dstSwitch, long dstPort, long dstMac) {
-		super(id);
-		srcSwitchDpid = srcSwitch;
-		srcPortNumber = srcPort;
-		srcMacAddress = srcMac;
-		dstSwitchDpid = dstSwitch;
-		dstPortNumber = dstPort;
-		dstMacAddress = dstMac;
-	}
+    public ShortestPathIntent(String id,
+                              long srcSwitch, long srcPort, long srcMac,
+                              long dstSwitch, long dstPort, long dstMac) {
+        super(id);
+        srcSwitchDpid = srcSwitch;
+        srcPortNumber = srcPort;
+        srcMacAddress = srcMac;
+        dstSwitchDpid = dstSwitch;
+        dstPortNumber = dstPort;
+        dstMacAddress = dstMac;
+    }
 
-	public long getSrcSwitchDpid() {
-		return srcSwitchDpid;
-	}
+    public long getSrcSwitchDpid() {
+        return srcSwitchDpid;
+    }
 
-	public long getSrcPortNumber() {
-		return srcPortNumber;
-	}
+    public long getSrcPortNumber() {
+        return srcPortNumber;
+    }
 
-	public long getSrcMac() {
-		return srcMacAddress;
-	}
+    public long getSrcMac() {
+        return srcMacAddress;
+    }
 
-	public long getDstSwitchDpid() {
-		return dstSwitchDpid;
-	}
+    public long getDstSwitchDpid() {
+        return dstSwitchDpid;
+    }
 
-	public long getDstPortNumber() {
-		return dstPortNumber;
-	}
+    public long getDstPortNumber() {
+        return dstPortNumber;
+    }
 
-	public long getDstMac() {
-		return dstMacAddress;
-	}
+    public long getDstMac() {
+        return dstMacAddress;
+    }
 
-	public void setPathIntent(PathIntent pathIntent) {
-		pathIntentId = pathIntent.getId();
-	}
+    public void setPathIntent(PathIntent pathIntent) {
+        pathIntentId = pathIntent.getId();
+    }
 
-	public String getPathIntentId() {
-		return pathIntentId;
-	}
+    public String getPathIntentId() {
+        return pathIntentId;
+    }
 
-	@Override
-	public String toString() {
-		return String.format("id:%s, state:%s, srcDpid:%s, srcPort:%d, srcMac:%s, dstDpid:%s, dstPort:%d, dstMac:%s",
-				getId(), getState(),
-				new Dpid(srcSwitchDpid), srcPortNumber, MACAddress.valueOf(srcMacAddress),
-				new Dpid(dstSwitchDpid), dstPortNumber, MACAddress.valueOf(dstMacAddress));
-	}
+    @Override
+    public String toString() {
+        return String.format("id:%s, state:%s, srcDpid:%s, srcPort:%d, srcMac:%s, dstDpid:%s, dstPort:%d, dstMac:%s",
+                getId(), getState(),
+                new Dpid(srcSwitchDpid), srcPortNumber, MACAddress.valueOf(srcMacAddress),
+                new Dpid(dstSwitchDpid), dstPortNumber, MACAddress.valueOf(dstMacAddress));
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/runtime/IPathCalcRuntimeService.java b/src/main/java/net/onrc/onos/core/intent/runtime/IPathCalcRuntimeService.java
index c6aad89..dd7bfd0 100644
--- a/src/main/java/net/onrc/onos/core/intent/runtime/IPathCalcRuntimeService.java
+++ b/src/main/java/net/onrc/onos/core/intent/runtime/IPathCalcRuntimeService.java
@@ -8,8 +8,11 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public interface IPathCalcRuntimeService extends IFloodlightService {
-	public IntentOperationList executeIntentOperations(IntentOperationList list);
-	public IntentMap getHighLevelIntents();
-	public IntentMap getPathIntents();
-	public void purgeIntents();
+    public IntentOperationList executeIntentOperations(IntentOperationList list);
+
+    public IntentMap getHighLevelIntents();
+
+    public IntentMap getPathIntents();
+
+    public void purgeIntents();
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/runtime/IntentStateList.java b/src/main/java/net/onrc/onos/core/intent/runtime/IntentStateList.java
index e6f1180..e354811 100644
--- a/src/main/java/net/onrc/onos/core/intent/runtime/IntentStateList.java
+++ b/src/main/java/net/onrc/onos/core/intent/runtime/IntentStateList.java
@@ -8,5 +8,5 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class IntentStateList extends HashMap<String, IntentState> {
-	private static final long serialVersionUID = -3674903999581438936L;
+    private static final long serialVersionUID = -3674903999581438936L;
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntime.java b/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntime.java
index 9314959..c582fe1 100644
--- a/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntime.java
+++ b/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntime.java
@@ -27,115 +27,116 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class PathCalcRuntime implements IFloodlightService {
-	private NetworkGraph graph;
-	private final static Logger log = LoggerFactory.getLogger(PathCalcRuntime.class);
-	public PathCalcRuntime(NetworkGraph g) {
-		this.graph = g;
-	}
+    private NetworkGraph graph;
+    private final static Logger log = LoggerFactory.getLogger(PathCalcRuntime.class);
 
-	/**
-	 * calculate shortest-path and constrained-shortest-path intents into low-level path intents
-	 * @param intentOpList IntentOperationList having instances of ShortestPathIntent/ConstrainedShortestPathIntent
-	 * @param pathIntents a set of current low-level intents
-	 * @return IntentOperationList. PathIntent and/or ErrorIntent instances.
-	 */
-	public IntentOperationList calcPathIntents(final IntentOperationList intentOpList, final IntentMap appIntents, final PathIntentMap pathIntents) {
-		IntentOperationList pathIntentOpList = new IntentOperationList();
-		HashMap<Switch, ConstrainedBFSTree> spfTrees = new HashMap<>();
+    public PathCalcRuntime(NetworkGraph g) {
+        this.graph = g;
+    }
 
-		// TODO optimize locking of NetworkGraph
-		graph.acquireReadLock();
-		log.debug("NetworkGraph: {}", graph.getLinks());
+    /**
+     * calculate shortest-path and constrained-shortest-path intents into low-level path intents
+     *
+     * @param intentOpList IntentOperationList having instances of ShortestPathIntent/ConstrainedShortestPathIntent
+     * @param pathIntents  a set of current low-level intents
+     * @return IntentOperationList. PathIntent and/or ErrorIntent instances.
+     */
+    public IntentOperationList calcPathIntents(final IntentOperationList intentOpList, final IntentMap appIntents, final PathIntentMap pathIntents) {
+        IntentOperationList pathIntentOpList = new IntentOperationList();
+        HashMap<Switch, ConstrainedBFSTree> spfTrees = new HashMap<>();
 
-		for (IntentOperation intentOp: intentOpList) {
-			switch (intentOp.operator) {
-			case ADD:
-				if (!(intentOp.intent instanceof ShortestPathIntent)) {
-					log.error("Unsupported intent type: {}", intentOp.intent.getClass().getName());
-					pathIntentOpList.add(Operator.ERROR, new ErrorIntent(
-							ErrorType.UNSUPPORTED_INTENT,
-							"Unsupported intent type.",
-							intentOp.intent));
-					continue;
-				}
+        // TODO optimize locking of NetworkGraph
+        graph.acquireReadLock();
+        log.debug("NetworkGraph: {}", graph.getLinks());
 
-				ShortestPathIntent spIntent = (ShortestPathIntent) intentOp.intent;
-				Switch srcSwitch = graph.getSwitch(spIntent.getSrcSwitchDpid());
-				Switch dstSwitch = graph.getSwitch(spIntent.getDstSwitchDpid());
-				if (srcSwitch == null || dstSwitch == null) {
-					log.error("Switch not found. src:{}, dst:{}, NetworkGraph:{}",
-							spIntent.getSrcSwitchDpid(),
-							spIntent.getDstSwitchDpid(),
-							graph.getLinks());
-					pathIntentOpList.add(Operator.ERROR, new ErrorIntent(
-							ErrorType.SWITCH_NOT_FOUND,
-							"Switch not found.",
-							spIntent));
-					continue;
-				}
+        for (IntentOperation intentOp : intentOpList) {
+            switch (intentOp.operator) {
+                case ADD:
+                    if (!(intentOp.intent instanceof ShortestPathIntent)) {
+                        log.error("Unsupported intent type: {}", intentOp.intent.getClass().getName());
+                        pathIntentOpList.add(Operator.ERROR, new ErrorIntent(
+                                ErrorType.UNSUPPORTED_INTENT,
+                                "Unsupported intent type.",
+                                intentOp.intent));
+                        continue;
+                    }
 
-				double bandwidth = 0.0;
-				ConstrainedBFSTree tree = null;
-				if (spIntent instanceof ConstrainedShortestPathIntent) {
-					bandwidth = ((ConstrainedShortestPathIntent) intentOp.intent).getBandwidth();
-					tree = new ConstrainedBFSTree(srcSwitch, pathIntents, bandwidth);
-				}
-				else {
-					tree = spfTrees.get(srcSwitch);
-					if (tree == null) {
-						tree = new ConstrainedBFSTree(srcSwitch);
-						spfTrees.put(srcSwitch, tree);
-					}
-				}
-				Path path = tree.getPath(dstSwitch);
-				if (path == null) {
-					log.error("Path not found. Intent: {}, NetworkGraph:{}", spIntent.toString(), graph.getLinks());
-					pathIntentOpList.add(Operator.ERROR, new ErrorIntent(
-							ErrorType.PATH_NOT_FOUND,
-							"Path not found.",
-							spIntent));
-					continue;
-				}
+                    ShortestPathIntent spIntent = (ShortestPathIntent) intentOp.intent;
+                    Switch srcSwitch = graph.getSwitch(spIntent.getSrcSwitchDpid());
+                    Switch dstSwitch = graph.getSwitch(spIntent.getDstSwitchDpid());
+                    if (srcSwitch == null || dstSwitch == null) {
+                        log.error("Switch not found. src:{}, dst:{}, NetworkGraph:{}",
+                                spIntent.getSrcSwitchDpid(),
+                                spIntent.getDstSwitchDpid(),
+                                graph.getLinks());
+                        pathIntentOpList.add(Operator.ERROR, new ErrorIntent(
+                                ErrorType.SWITCH_NOT_FOUND,
+                                "Switch not found.",
+                                spIntent));
+                        continue;
+                    }
 
-				// generate new path-intent ID
-				String oldPathIntentId = spIntent.getPathIntentId();
-				String newPathIntentId;
-				if (oldPathIntentId == null)
-					newPathIntentId = PathIntent.createFirstId(spIntent.getId());
-				else {
-					newPathIntentId = PathIntent.createNextId(oldPathIntentId);
+                    double bandwidth = 0.0;
+                    ConstrainedBFSTree tree = null;
+                    if (spIntent instanceof ConstrainedShortestPathIntent) {
+                        bandwidth = ((ConstrainedShortestPathIntent) intentOp.intent).getBandwidth();
+                        tree = new ConstrainedBFSTree(srcSwitch, pathIntents, bandwidth);
+                    } else {
+                        tree = spfTrees.get(srcSwitch);
+                        if (tree == null) {
+                            tree = new ConstrainedBFSTree(srcSwitch);
+                            spfTrees.put(srcSwitch, tree);
+                        }
+                    }
+                    Path path = tree.getPath(dstSwitch);
+                    if (path == null) {
+                        log.error("Path not found. Intent: {}, NetworkGraph:{}", spIntent.toString(), graph.getLinks());
+                        pathIntentOpList.add(Operator.ERROR, new ErrorIntent(
+                                ErrorType.PATH_NOT_FOUND,
+                                "Path not found.",
+                                spIntent));
+                        continue;
+                    }
 
-					// Request removal of low-level intent if it exists.
-					pathIntentOpList.add(Operator.REMOVE, new Intent(oldPathIntentId));
-				}
+                    // generate new path-intent ID
+                    String oldPathIntentId = spIntent.getPathIntentId();
+                    String newPathIntentId;
+                    if (oldPathIntentId == null)
+                        newPathIntentId = PathIntent.createFirstId(spIntent.getId());
+                    else {
+                        newPathIntentId = PathIntent.createNextId(oldPathIntentId);
 
-				// create new path-intent
-				PathIntent pathIntent = new PathIntent(newPathIntentId, path, bandwidth, spIntent);
-				pathIntent.setState(IntentState.INST_REQ);
-				spIntent.setPathIntent(pathIntent);
-				pathIntentOpList.add(Operator.ADD, pathIntent);
+                        // Request removal of low-level intent if it exists.
+                        pathIntentOpList.add(Operator.REMOVE, new Intent(oldPathIntentId));
+                    }
 
-				break;
-			case REMOVE:
-				ShortestPathIntent targetAppIntent = (ShortestPathIntent) appIntents.getIntent(intentOp.intent.getId());
-				if (targetAppIntent != null) {
-					String pathIntentId = targetAppIntent.getPathIntentId();
-					if (pathIntentId != null) {
-						Intent targetPathIntent = pathIntents.getIntent(pathIntentId);
-						if (targetPathIntent != null) {
-							pathIntentOpList.add(Operator.REMOVE, targetPathIntent);
-						}
-					}
-				}
-				break;
-			case ERROR:
-				// just ignore
-				break;
-			}
-		}
-		// TODO optimize locking of NetworkGraph
-		graph.releaseReadLock();
+                    // create new path-intent
+                    PathIntent pathIntent = new PathIntent(newPathIntentId, path, bandwidth, spIntent);
+                    pathIntent.setState(IntentState.INST_REQ);
+                    spIntent.setPathIntent(pathIntent);
+                    pathIntentOpList.add(Operator.ADD, pathIntent);
 
-		return pathIntentOpList;
-	}
+                    break;
+                case REMOVE:
+                    ShortestPathIntent targetAppIntent = (ShortestPathIntent) appIntents.getIntent(intentOp.intent.getId());
+                    if (targetAppIntent != null) {
+                        String pathIntentId = targetAppIntent.getPathIntentId();
+                        if (pathIntentId != null) {
+                            Intent targetPathIntent = pathIntents.getIntent(pathIntentId);
+                            if (targetPathIntent != null) {
+                                pathIntentOpList.add(Operator.REMOVE, targetPathIntent);
+                            }
+                        }
+                    }
+                    break;
+                case ERROR:
+                    // just ignore
+                    break;
+            }
+        }
+        // TODO optimize locking of NetworkGraph
+        graph.releaseReadLock();
+
+        return pathIntentOpList;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntimeModule.java b/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntimeModule.java
index 8c219c2..bacb5a3 100755
--- a/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntimeModule.java
+++ b/src/main/java/net/onrc/onos/core/intent/runtime/PathCalcRuntimeModule.java
@@ -41,367 +41,365 @@
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class PathCalcRuntimeModule implements IFloodlightModule, IPathCalcRuntimeService, INetworkGraphListener, IEventChannelListener<Long, IntentStateList> {
-	class PerfLog {
-		private String step;
-		private long time;
+    class PerfLog {
+        private String step;
+        private long time;
 
-		public PerfLog(String step) {
-			this.step = step;
-			this.time = System.nanoTime();
-		}
+        public PerfLog(String step) {
+            this.step = step;
+            this.time = System.nanoTime();
+        }
 
-		public void logThis() {
-			log.error("Time:{}, Step:{}", time, step);
-		}
-	}
-	class PerfLogger {
-		private LinkedList<PerfLog> logData = new LinkedList<>();
+        public void logThis() {
+            log.error("Time:{}, Step:{}", time, step);
+        }
+    }
 
-		public PerfLogger(String logPhase) {
-			log("start_" + logPhase);
-		}
+    class PerfLogger {
+        private LinkedList<PerfLog> logData = new LinkedList<>();
 
-		public void log(String step) {
-			logData.add(new PerfLog(step));
-		}
+        public PerfLogger(String logPhase) {
+            log("start_" + logPhase);
+        }
 
-		public void flushLog() {
-			log("finish");
-			for (PerfLog log: logData) {
-				log.logThis();
-			}
-			logData.clear();
-		}
-	}
-	private PathCalcRuntime runtime;
-	private IDatagridService datagridService;
-	private INetworkGraphService networkGraphService;
-	private IntentMap highLevelIntents;
-	private PathIntentMap pathIntents;
-	private IControllerRegistryService controllerRegistry;
-	private PersistIntent persistIntent;
+        public void log(String step) {
+            logData.add(new PerfLog(step));
+        }
 
-	private IEventChannel<Long, IntentOperationList> opEventChannel;
-	private final ReentrantLock lock = new ReentrantLock();
-	private HashSet<LinkEvent> unmatchedLinkEvents = new HashSet<>();
-	private static final String INTENT_OP_EVENT_CHANNEL_NAME = "onos.pathintent";
-	private static final String INTENT_STATE_EVENT_CHANNEL_NAME = "onos.pathintent_state";
-	private static final Logger log = LoggerFactory.getLogger(PathCalcRuntimeModule.class);
+        public void flushLog() {
+            log("finish");
+            for (PerfLog log : logData) {
+                log.logThis();
+            }
+            logData.clear();
+        }
+    }
 
-	// ================================================================================
-	// private methods
-	// ================================================================================
+    private PathCalcRuntime runtime;
+    private IDatagridService datagridService;
+    private INetworkGraphService networkGraphService;
+    private IntentMap highLevelIntents;
+    private PathIntentMap pathIntents;
+    private IControllerRegistryService controllerRegistry;
+    private PersistIntent persistIntent;
 
-	private void reroutePaths(Collection<Intent> oldPaths) {
-		if (oldPaths == null || oldPaths.isEmpty())
-			return;
+    private IEventChannel<Long, IntentOperationList> opEventChannel;
+    private final ReentrantLock lock = new ReentrantLock();
+    private HashSet<LinkEvent> unmatchedLinkEvents = new HashSet<>();
+    private static final String INTENT_OP_EVENT_CHANNEL_NAME = "onos.pathintent";
+    private static final String INTENT_STATE_EVENT_CHANNEL_NAME = "onos.pathintent_state";
+    private static final Logger log = LoggerFactory.getLogger(PathCalcRuntimeModule.class);
 
-		IntentOperationList reroutingOperation = new IntentOperationList();
-		for (Intent intent : oldPaths) {
-			PathIntent pathIntent = (PathIntent) intent;
-			if (pathIntent.isPathFrozen())
-				continue;
-			if (pathIntent.getState().equals(IntentState.INST_ACK) && // XXX: path intents in flight
-					!reroutingOperation.contains(pathIntent.getParentIntent())) {
-				reroutingOperation.add(Operator.ADD, pathIntent.getParentIntent());
-			}
-		}
-		executeIntentOperations(reroutingOperation);
-	}
+    // ================================================================================
+    // private methods
+    // ================================================================================
+
+    private void reroutePaths(Collection<Intent> oldPaths) {
+        if (oldPaths == null || oldPaths.isEmpty())
+            return;
+
+        IntentOperationList reroutingOperation = new IntentOperationList();
+        for (Intent intent : oldPaths) {
+            PathIntent pathIntent = (PathIntent) intent;
+            if (pathIntent.isPathFrozen())
+                continue;
+            if (pathIntent.getState().equals(IntentState.INST_ACK) && // XXX: path intents in flight
+                    !reroutingOperation.contains(pathIntent.getParentIntent())) {
+                reroutingOperation.add(Operator.ADD, pathIntent.getParentIntent());
+            }
+        }
+        executeIntentOperations(reroutingOperation);
+    }
 
 
-	// ================================================================================
-	// IFloodlightModule implementations
-	// ================================================================================
+    // ================================================================================
+    // IFloodlightModule implementations
+    // ================================================================================
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-		Collection<Class<? extends IFloodlightService>> l = new ArrayList<>(1);
-		l.add(IPathCalcRuntimeService.class);
-		return l;
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleServices() {
+        Collection<Class<? extends IFloodlightService>> l = new ArrayList<>(1);
+        l.add(IPathCalcRuntimeService.class);
+        return l;
+    }
 
-	@Override
-	public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
-		Map<Class<? extends IFloodlightService>, IFloodlightService> m = new HashMap<>();
-		m.put(IPathCalcRuntimeService.class, this);
-		return m;
-	}
+    @Override
+    public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
+        Map<Class<? extends IFloodlightService>, IFloodlightService> m = new HashMap<>();
+        m.put(IPathCalcRuntimeService.class, this);
+        return m;
+    }
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
-		Collection<Class<? extends IFloodlightService>> l = new ArrayList<>(2);
-		l.add(IDatagridService.class);
-		l.add(INetworkGraphService.class);
-		return l;
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
+        Collection<Class<? extends IFloodlightService>> l = new ArrayList<>(2);
+        l.add(IDatagridService.class);
+        l.add(INetworkGraphService.class);
+        return l;
+    }
 
-	@Override
-	public void init(FloodlightModuleContext context) throws FloodlightModuleException {
-		datagridService = context.getServiceImpl(IDatagridService.class);
-		networkGraphService = context.getServiceImpl(INetworkGraphService.class);
-		controllerRegistry = context.getServiceImpl(IControllerRegistryService.class);
-	}
+    @Override
+    public void init(FloodlightModuleContext context) throws FloodlightModuleException {
+        datagridService = context.getServiceImpl(IDatagridService.class);
+        networkGraphService = context.getServiceImpl(INetworkGraphService.class);
+        controllerRegistry = context.getServiceImpl(IControllerRegistryService.class);
+    }
 
-	@Override
-	public void startUp(FloodlightModuleContext context) {
-		highLevelIntents = new IntentMap();
-		runtime = new PathCalcRuntime(networkGraphService.getNetworkGraph());
-		pathIntents = new PathIntentMap();
-		opEventChannel = datagridService.createChannel(INTENT_OP_EVENT_CHANNEL_NAME, Long.class, IntentOperationList.class);
-		datagridService.addListener(INTENT_STATE_EVENT_CHANNEL_NAME, this, Long.class, IntentStateList.class);
-		networkGraphService.registerNetworkGraphListener(this);
-		persistIntent = new PersistIntent(controllerRegistry, networkGraphService);
-	}
+    @Override
+    public void startUp(FloodlightModuleContext context) {
+        highLevelIntents = new IntentMap();
+        runtime = new PathCalcRuntime(networkGraphService.getNetworkGraph());
+        pathIntents = new PathIntentMap();
+        opEventChannel = datagridService.createChannel(INTENT_OP_EVENT_CHANNEL_NAME, Long.class, IntentOperationList.class);
+        datagridService.addListener(INTENT_STATE_EVENT_CHANNEL_NAME, this, Long.class, IntentStateList.class);
+        networkGraphService.registerNetworkGraphListener(this);
+        persistIntent = new PersistIntent(controllerRegistry, networkGraphService);
+    }
 
-	// ================================================================================
-	// IPathCalcRuntimeService implementations
-	// ================================================================================
+    // ================================================================================
+    // IPathCalcRuntimeService implementations
+    // ================================================================================
 
-	@Override
-	public IntentOperationList executeIntentOperations(IntentOperationList list) {
-		if (list == null || list.size() == 0)
-			return null;
-		PerfLogger p = new PerfLogger("executeIntentOperations_" + list.get(0).operator);
+    @Override
+    public IntentOperationList executeIntentOperations(IntentOperationList list) {
+        if (list == null || list.size() == 0)
+            return null;
+        PerfLogger p = new PerfLogger("executeIntentOperations_" + list.get(0).operator);
 
-		lock.lock(); // TODO optimize locking using smaller steps
-		try {
-			// update the map of high-level intents
-			p.log("begin_updateInMemoryIntents");
-			highLevelIntents.executeOperations(list);
+        lock.lock(); // TODO optimize locking using smaller steps
+        try {
+            // update the map of high-level intents
+            p.log("begin_updateInMemoryIntents");
+            highLevelIntents.executeOperations(list);
 
-			// change states of high-level intents
-			IntentStateList states = new IntentStateList();
-			for (IntentOperation op : list) {
-				switch (op.operator) {
-				case ADD:
-					switch (op.intent.getState()) {
-					case CREATED:
-						states.put(op.intent.getId(), IntentState.INST_REQ);
-						break;
-					case INST_ACK:
-						states.put(op.intent.getId(), IntentState.REROUTE_REQ);
-						break;
-					default:
-						break;
-					}
-					break;
-				case REMOVE:
-					switch (op.intent.getState()) {
-					case CREATED:
-						states.put(op.intent.getId(), IntentState.DEL_REQ);
-						break;
-					default:
-						break;
-					}
-					break;
-				default:
-					break;
-				}
-			}
-			highLevelIntents.changeStates(states);
-			p.log("end_updateInMemoryIntents");
+            // change states of high-level intents
+            IntentStateList states = new IntentStateList();
+            for (IntentOperation op : list) {
+                switch (op.operator) {
+                    case ADD:
+                        switch (op.intent.getState()) {
+                            case CREATED:
+                                states.put(op.intent.getId(), IntentState.INST_REQ);
+                                break;
+                            case INST_ACK:
+                                states.put(op.intent.getId(), IntentState.REROUTE_REQ);
+                                break;
+                            default:
+                                break;
+                        }
+                        break;
+                    case REMOVE:
+                        switch (op.intent.getState()) {
+                            case CREATED:
+                                states.put(op.intent.getId(), IntentState.DEL_REQ);
+                                break;
+                            default:
+                                break;
+                        }
+                        break;
+                    default:
+                        break;
+                }
+            }
+            highLevelIntents.changeStates(states);
+            p.log("end_updateInMemoryIntents");
 
-			// calculate path-intents (low-level operations)
-			p.log("begin_calcPathIntents");
-			IntentOperationList pathIntentOperations = runtime.calcPathIntents(list, highLevelIntents, pathIntents);
-			p.log("end_calcPathIntents");
+            // calculate path-intents (low-level operations)
+            p.log("begin_calcPathIntents");
+            IntentOperationList pathIntentOperations = runtime.calcPathIntents(list, highLevelIntents, pathIntents);
+            p.log("end_calcPathIntents");
 
-			// persist calculated low-level operations into data store
-			p.log("begin_persistPathIntents");
-			long key = persistIntent.getKey();
-			persistIntent.persistIfLeader(key, pathIntentOperations);
-			p.log("end_persistPathIntents");
+            // persist calculated low-level operations into data store
+            p.log("begin_persistPathIntents");
+            long key = persistIntent.getKey();
+            persistIntent.persistIfLeader(key, pathIntentOperations);
+            p.log("end_persistPathIntents");
 
-			// remove error-intents and reflect them to high-level intents
-			p.log("begin_removeErrorIntents");
-			states.clear();
-			Iterator<IntentOperation> i = pathIntentOperations.iterator();
-			while (i.hasNext()) {
-				IntentOperation op = i.next();
-				if (op.operator.equals(Operator.ERROR)) {
-					states.put(op.intent.getId(), IntentState.INST_NACK);
-					i.remove();
-				}
-			}
-			highLevelIntents.changeStates(states);
-			p.log("end_removeErrorIntents");
+            // remove error-intents and reflect them to high-level intents
+            p.log("begin_removeErrorIntents");
+            states.clear();
+            Iterator<IntentOperation> i = pathIntentOperations.iterator();
+            while (i.hasNext()) {
+                IntentOperation op = i.next();
+                if (op.operator.equals(Operator.ERROR)) {
+                    states.put(op.intent.getId(), IntentState.INST_NACK);
+                    i.remove();
+                }
+            }
+            highLevelIntents.changeStates(states);
+            p.log("end_removeErrorIntents");
 
-			// update the map of path intents and publish the path operations
-			p.log("begin_updateInMemoryPathIntents");
-			pathIntents.executeOperations(pathIntentOperations);
-			p.log("end_updateInMemoryPathIntents");
+            // update the map of path intents and publish the path operations
+            p.log("begin_updateInMemoryPathIntents");
+            pathIntents.executeOperations(pathIntentOperations);
+            p.log("end_updateInMemoryPathIntents");
 
-			// XXX Demo special: add a complete path to remove operation
-			p.log("begin_addPathToRemoveOperation");
-			for (IntentOperation op: pathIntentOperations) {
-				if(op.operator.equals(Operator.REMOVE)) {
-					op.intent = pathIntents.getIntent(op.intent.getId());
-				}
-				if (op.intent instanceof PathIntent) {
-					log.debug("operation: {}, intent:{}", op.operator, op.intent);
-				}
-			}
-			p.log("end_addPathToRemoveOperation");
+            // XXX Demo special: add a complete path to remove operation
+            p.log("begin_addPathToRemoveOperation");
+            for (IntentOperation op : pathIntentOperations) {
+                if (op.operator.equals(Operator.REMOVE)) {
+                    op.intent = pathIntents.getIntent(op.intent.getId());
+                }
+                if (op.intent instanceof PathIntent) {
+                    log.debug("operation: {}, intent:{}", op.operator, op.intent);
+                }
+            }
+            p.log("end_addPathToRemoveOperation");
 
-			// send notification
-			p.log("begin_sendNotification");
-			// XXX: Send notifications using the same key every time
-			// and receive them by entryAdded() and entryUpdated()
-			opEventChannel.addEntry(0L, pathIntentOperations);
-			p.log("end_sendNotification");
-			//opEventChannel.removeEntry(key);
-			return pathIntentOperations;
-		}
-		finally {
-			p.flushLog();
-			lock.unlock();
-		}
-	}
+            // send notification
+            p.log("begin_sendNotification");
+            // XXX: Send notifications using the same key every time
+            // and receive them by entryAdded() and entryUpdated()
+            opEventChannel.addEntry(0L, pathIntentOperations);
+            p.log("end_sendNotification");
+            //opEventChannel.removeEntry(key);
+            return pathIntentOperations;
+        } finally {
+            p.flushLog();
+            lock.unlock();
+        }
+    }
 
-	@Override
-	public IntentMap getHighLevelIntents() {
-		return highLevelIntents;
-	}
+    @Override
+    public IntentMap getHighLevelIntents() {
+        return highLevelIntents;
+    }
 
-	@Override
-	public IntentMap getPathIntents() {
-		return pathIntents;
-	}
+    @Override
+    public IntentMap getPathIntents() {
+        return pathIntents;
+    }
 
-	@Override
-	public void purgeIntents() {
-		highLevelIntents.purge();
-		pathIntents.purge();
-	}
+    @Override
+    public void purgeIntents() {
+        highLevelIntents.purge();
+        pathIntents.purge();
+    }
 
-	// ================================================================================
-	// INetworkGraphListener implementations
-	// ================================================================================
+    // ================================================================================
+    // INetworkGraphListener implementations
+    // ================================================================================
 
-	@Override
-	public void networkGraphEvents(Collection<SwitchEvent> addedSwitchEvents,
-			Collection<SwitchEvent> removedSwitchEvents,
-			Collection<PortEvent> addedPortEvents,
-			Collection<PortEvent> removedPortEvents,
-			Collection<LinkEvent> addedLinkEvents,
-			Collection<LinkEvent> removedLinkEvents,
-			Collection<DeviceEvent> addedDeviceEvents,
-			Collection<DeviceEvent> removedDeviceEvents) {
+    @Override
+    public void networkGraphEvents(Collection<SwitchEvent> addedSwitchEvents,
+                                   Collection<SwitchEvent> removedSwitchEvents,
+                                   Collection<PortEvent> addedPortEvents,
+                                   Collection<PortEvent> removedPortEvents,
+                                   Collection<LinkEvent> addedLinkEvents,
+                                   Collection<LinkEvent> removedLinkEvents,
+                                   Collection<DeviceEvent> addedDeviceEvents,
+                                   Collection<DeviceEvent> removedDeviceEvents) {
 
-		PerfLogger p = new PerfLogger("networkGraphEvents");
-		HashSet<Intent> affectedPaths = new HashSet<>();
+        PerfLogger p = new PerfLogger("networkGraphEvents");
+        HashSet<Intent> affectedPaths = new HashSet<>();
 
-		boolean rerouteAll = false;
-		for(LinkEvent le : addedLinkEvents) {
-		    LinkEvent rev = new LinkEvent(le.getDst().getDpid(), le.getDst().getNumber(), le.getSrc().getDpid(), le.getSrc().getNumber());
-		    if(unmatchedLinkEvents.contains(rev)) {
-			rerouteAll = true;
-			unmatchedLinkEvents.remove(rev);
-			log.debug("Found matched LinkEvent: {} {}", rev, le);
-		    }
-		    else {
-			unmatchedLinkEvents.add(le);
-			log.debug("Adding unmatched LinkEvent: {}", le);
-		    }
-		}
-		for(LinkEvent le : removedLinkEvents) {
-		    if (unmatchedLinkEvents.contains(le)) {
-			unmatchedLinkEvents.remove(le);
-			log.debug("Removing LinkEvent: {}", le);
-		    }
-		}
-		if(unmatchedLinkEvents.size() > 0) {
-		    log.debug("Unmatched link events: {} events", unmatchedLinkEvents.size());
-		}
+        boolean rerouteAll = false;
+        for (LinkEvent le : addedLinkEvents) {
+            LinkEvent rev = new LinkEvent(le.getDst().getDpid(), le.getDst().getNumber(), le.getSrc().getDpid(), le.getSrc().getNumber());
+            if (unmatchedLinkEvents.contains(rev)) {
+                rerouteAll = true;
+                unmatchedLinkEvents.remove(rev);
+                log.debug("Found matched LinkEvent: {} {}", rev, le);
+            } else {
+                unmatchedLinkEvents.add(le);
+                log.debug("Adding unmatched LinkEvent: {}", le);
+            }
+        }
+        for (LinkEvent le : removedLinkEvents) {
+            if (unmatchedLinkEvents.contains(le)) {
+                unmatchedLinkEvents.remove(le);
+                log.debug("Removing LinkEvent: {}", le);
+            }
+        }
+        if (unmatchedLinkEvents.size() > 0) {
+            log.debug("Unmatched link events: {} events", unmatchedLinkEvents.size());
+        }
 
-		if ( rerouteAll ) {//addedLinkEvents.size() > 0) { // ||
-//				addedPortEvents.size() > 0 ||
-//				addedSwitchEvents.size() > 0) {
-			p.log("begin_getAllIntents");
-			affectedPaths.addAll(getPathIntents().getAllIntents());
-			p.log("end_getAllIntents");
-		}
-		else if (removedSwitchEvents.size() > 0 ||
-			 removedLinkEvents.size() > 0 ||
-			 removedPortEvents.size() > 0) {
-			p.log("begin_getIntentsByLink");
-			for (LinkEvent linkEvent: removedLinkEvents)
-				affectedPaths.addAll(pathIntents.getIntentsByLink(linkEvent));
-			p.log("end_getIntentsByLink");
+        if (rerouteAll) {//addedLinkEvents.size() > 0) { // ||
+//                              addedPortEvents.size() > 0 ||
+//                              addedSwitchEvents.size() > 0) {
+            p.log("begin_getAllIntents");
+            affectedPaths.addAll(getPathIntents().getAllIntents());
+            p.log("end_getAllIntents");
+        } else if (removedSwitchEvents.size() > 0 ||
+                removedLinkEvents.size() > 0 ||
+                removedPortEvents.size() > 0) {
+            p.log("begin_getIntentsByLink");
+            for (LinkEvent linkEvent : removedLinkEvents)
+                affectedPaths.addAll(pathIntents.getIntentsByLink(linkEvent));
+            p.log("end_getIntentsByLink");
 
-			p.log("begin_getIntentsByPort");
-			for (PortEvent portEvent: removedPortEvents)
-				affectedPaths.addAll(pathIntents.getIntentsByPort(portEvent.getDpid(), portEvent.getNumber()));
-			p.log("end_getIntentsByPort");
+            p.log("begin_getIntentsByPort");
+            for (PortEvent portEvent : removedPortEvents)
+                affectedPaths.addAll(pathIntents.getIntentsByPort(portEvent.getDpid(), portEvent.getNumber()));
+            p.log("end_getIntentsByPort");
 
-			p.log("begin_getIntentsByDpid");
-			for (SwitchEvent switchEvent: removedSwitchEvents)
-				affectedPaths.addAll(pathIntents.getIntentsByDpid(switchEvent.getDpid()));
-			p.log("end_getIntentsByDpid");
-		}
-		p.log("begin_reroutePaths");
-		reroutePaths(affectedPaths);
-		p.log("end_reroutePaths");
-		p.flushLog();
-	}
+            p.log("begin_getIntentsByDpid");
+            for (SwitchEvent switchEvent : removedSwitchEvents)
+                affectedPaths.addAll(pathIntents.getIntentsByDpid(switchEvent.getDpid()));
+            p.log("end_getIntentsByDpid");
+        }
+        p.log("begin_reroutePaths");
+        reroutePaths(affectedPaths);
+        p.log("end_reroutePaths");
+        p.flushLog();
+    }
 
-	// ================================================================================
-	// IEventChannelListener implementations
-	// ================================================================================
+    // ================================================================================
+    // IEventChannelListener implementations
+    // ================================================================================
 
-	@Override
-	public void entryAdded(IntentStateList value) {
-		entryUpdated(value);
-	}
+    @Override
+    public void entryAdded(IntentStateList value) {
+        entryUpdated(value);
+    }
 
-	@Override
-	public void entryRemoved(IntentStateList value) {
-		// do nothing
-	}
+    @Override
+    public void entryRemoved(IntentStateList value) {
+        // do nothing
+    }
 
-	@Override
-	public void entryUpdated(IntentStateList value) {
-		// TODO draw state transition diagram in multiple ONOS instances and update this method
-		PerfLogger p = new PerfLogger("entryUpdated");
-		lock.lock(); // TODO optimize locking using smaller steps
-		try {
-			// reflect state changes of path-level intent into application-level intents
-			p.log("begin_changeStateByNotification");
-			IntentStateList highLevelIntentStates = new IntentStateList();
-			IntentStateList pathIntentStates = new IntentStateList();
-			for (Entry<String, IntentState> entry: value.entrySet()) {
-				PathIntent pathIntent = (PathIntent) pathIntents.getIntent(entry.getKey());
-				if (pathIntent == null) continue;
+    @Override
+    public void entryUpdated(IntentStateList value) {
+        // TODO draw state transition diagram in multiple ONOS instances and update this method
+        PerfLogger p = new PerfLogger("entryUpdated");
+        lock.lock(); // TODO optimize locking using smaller steps
+        try {
+            // reflect state changes of path-level intent into application-level intents
+            p.log("begin_changeStateByNotification");
+            IntentStateList highLevelIntentStates = new IntentStateList();
+            IntentStateList pathIntentStates = new IntentStateList();
+            for (Entry<String, IntentState> entry : value.entrySet()) {
+                PathIntent pathIntent = (PathIntent) pathIntents.getIntent(entry.getKey());
+                if (pathIntent == null) continue;
 
-				Intent parentIntent = pathIntent.getParentIntent();
-				if (parentIntent == null ||
-						!(parentIntent instanceof ShortestPathIntent) ||
-						!((ShortestPathIntent) parentIntent).getPathIntentId().equals(pathIntent.getId()))
-					continue;
+                Intent parentIntent = pathIntent.getParentIntent();
+                if (parentIntent == null ||
+                        !(parentIntent instanceof ShortestPathIntent) ||
+                        !((ShortestPathIntent) parentIntent).getPathIntentId().equals(pathIntent.getId()))
+                    continue;
 
-				IntentState state = entry.getValue();
-				switch (state) {
-				//case INST_REQ:
-				case INST_ACK:
-				case INST_NACK:
-				//case DEL_REQ:
-				case DEL_ACK:
-				case DEL_PENDING:
-					highLevelIntentStates.put(parentIntent.getId(), state);
-					pathIntentStates.put(entry.getKey(), entry.getValue());
-					break;
-				default:
-					break;
-				}
-			}
-			highLevelIntents.changeStates(highLevelIntentStates);
-			pathIntents.changeStates(pathIntentStates);
-			p.log("end_changeStateByNotification");
-		}
-		finally {
-			p.flushLog();
-			lock.unlock();
-		}
-	}
+                IntentState state = entry.getValue();
+                switch (state) {
+                    //case INST_REQ:
+                    case INST_ACK:
+                    case INST_NACK:
+                        //case DEL_REQ:
+                    case DEL_ACK:
+                    case DEL_PENDING:
+                        highLevelIntentStates.put(parentIntent.getId(), state);
+                        pathIntentStates.put(entry.getKey(), entry.getValue());
+                        break;
+                    default:
+                        break;
+                }
+            }
+            highLevelIntents.changeStates(highLevelIntentStates);
+            pathIntents.changeStates(pathIntentStates);
+            p.log("end_changeStateByNotification");
+        } finally {
+            p.flushLog();
+            lock.unlock();
+        }
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/runtime/PersistIntent.java b/src/main/java/net/onrc/onos/core/intent/runtime/PersistIntent.java
index 53be91c..e8c5dfc 100755
--- a/src/main/java/net/onrc/onos/core/intent/runtime/PersistIntent.java
+++ b/src/main/java/net/onrc/onos/core/intent/runtime/PersistIntent.java
@@ -28,7 +28,6 @@
 import com.esotericsoftware.kryo.io.Output;
 
 /**
- *
  * @author nickkaranatsios
  */
 public class PersistIntent {
@@ -90,7 +89,7 @@
                 ByteBuffer keyBytes = ByteBuffer.allocate(8).putLong(key);
                 byte[] buffer = stream.toByteArray();
                 int total = buffer.length;
-                if ((total >= valueStoreLimit )) {
+                if ((total >= valueStoreLimit)) {
                     int writeCount = total / valueStoreLimit;
                     int remainder = total % valueStoreLimit;
                     int upperIndex = 0;
@@ -99,14 +98,14 @@
                         keyBytes.putLong(key);
                         keyBytes.flip();
                         upperIndex = (i * valueStoreLimit + valueStoreLimit) - 1;
-                        log.debug("writing using indexes {}:{}", (i*valueStoreLimit) ,upperIndex);
+                        log.debug("writing using indexes {}:{}", (i * valueStoreLimit), upperIndex);
                         table.create(keyBytes.array(), Arrays.copyOfRange(buffer, i * valueStoreLimit, upperIndex));
                     }
                     if (remainder > 0) {
                         keyBytes.clear();
                         keyBytes.putLong(key);
                         keyBytes.flip();
-                        log.debug("writing using indexes {}:{}" ,upperIndex ,total);
+                        log.debug("writing using indexes {}:{}", upperIndex, total);
                         table.create(keyBytes.array(), Arrays.copyOfRange(buffer, upperIndex + 1, total - 1));
                     }
                 } else {
diff --git a/src/main/java/net/onrc/onos/core/intent/runtime/PlanCalcRuntime.java b/src/main/java/net/onrc/onos/core/intent/runtime/PlanCalcRuntime.java
index 09e50f6..7ea3bab 100644
--- a/src/main/java/net/onrc/onos/core/intent/runtime/PlanCalcRuntime.java
+++ b/src/main/java/net/onrc/onos/core/intent/runtime/PlanCalcRuntime.java
@@ -25,130 +25,125 @@
 import org.slf4j.LoggerFactory;
 
 /**
- *
  * @author Brian O'Connor <bocon@onlab.us>
- *
  */
 
 public class PlanCalcRuntime {
 
-//    NetworkGraph graph;
+    //    NetworkGraph graph;
     private final static Logger log = LoggerFactory.getLogger(PlanCalcRuntime.class);
 
     public PlanCalcRuntime(/*NetworkGraph graph*/) {
-//	this.graph = graph;
+//      this.graph = graph;
     }
 
     public List<Set<FlowEntry>> computePlan(IntentOperationList intentOps) {
-	long start = System.nanoTime();
-	List<Collection<FlowEntry>> flowEntries = computeFlowEntries(intentOps);
-	long step1 = System.nanoTime();
-	List<Set<FlowEntry>> plan = buildPhases(flowEntries);
-	long step2 = System.nanoTime();
-	log.error("MEASUREMENT: Compute flow entries: {} ns, Build phases: {} ns", 
-		  (step1 - start), (step2 - step1));
-	return plan;
+        long start = System.nanoTime();
+        List<Collection<FlowEntry>> flowEntries = computeFlowEntries(intentOps);
+        long step1 = System.nanoTime();
+        List<Set<FlowEntry>> plan = buildPhases(flowEntries);
+        long step2 = System.nanoTime();
+        log.error("MEASUREMENT: Compute flow entries: {} ns, Build phases: {} ns",
+                (step1 - start), (step2 - step1));
+        return plan;
     }
 
     private List<Collection<FlowEntry>> computeFlowEntries(IntentOperationList intentOps) {
-	List<Collection<FlowEntry>> flowEntries = new LinkedList<>();
-	for(IntentOperation i : intentOps) {
-	    if(!(i.intent instanceof PathIntent)) {
-		log.warn("Not a path intent: {}", i);
-		continue;
-	    }
-	    PathIntent intent = (PathIntent) i.intent;
-	    Intent parent = intent.getParentIntent();
-	    long srcPort, dstPort;
-	    long lastDstSw = -1, lastDstPort = -1;
-	    MACAddress srcMac, dstMac;
-	    if(parent instanceof ShortestPathIntent) {
-		ShortestPathIntent pathIntent = (ShortestPathIntent) parent;
-//		Switch srcSwitch = graph.getSwitch(pathIntent.getSrcSwitchDpid());
-//		srcPort = srcSwitch.getPort(pathIntent.getSrcPortNumber());
-		srcPort = pathIntent.getSrcPortNumber();
-		srcMac = MACAddress.valueOf(pathIntent.getSrcMac());
-		dstMac = MACAddress.valueOf(pathIntent.getDstMac());
-//		Switch dstSwitch = graph.getSwitch(pathIntent.getDstSwitchDpid());
-		lastDstSw = pathIntent.getDstSwitchDpid();
-//		lastDstPort = dstSwitch.getPort(pathIntent.getDstPortNumber());
-		lastDstPort = pathIntent.getDstPortNumber();
-	    }
-	    else {
-		log.warn("Unsupported Intent: {}", parent);
-		continue;
-	    }
-	    List<FlowEntry> entries = new ArrayList<>();
-	    for(LinkEvent linkEvent : intent.getPath()) {
-//		Link link = graph.getLink(linkEvent.getSrc().getDpid(),
-//			  linkEvent.getSrc().getNumber(),
-//			  linkEvent.getDst().getDpid(),
-//			  linkEvent.getDst().getNumber());
-//		Switch sw = link.getSrcSwitch();
-		long sw = linkEvent.getSrc().getDpid();
-//		dstPort = link.getSrcPort();
-		dstPort = linkEvent.getSrc().getNumber();
-		FlowEntry fe = new FlowEntry(sw, srcPort, dstPort, srcMac, dstMac, i.operator);
-		entries.add(fe);
-//		srcPort = link.getDstPort();
-		srcPort = linkEvent.getDst().getNumber();
-	    }
-	    if(lastDstSw >= 0 && lastDstPort >= 0) {
-		//Switch sw = lastDstPort.getSwitch();
-		long sw = lastDstSw;
-		dstPort = lastDstPort;
-		FlowEntry fe = new FlowEntry(sw, srcPort, dstPort, srcMac, dstMac, i.operator);
-		entries.add(fe);
-	    }
-	    // install flow entries in reverse order
-	    Collections.reverse(entries);
-	    flowEntries.add(entries);
-	}
-	return flowEntries;
+        List<Collection<FlowEntry>> flowEntries = new LinkedList<>();
+        for (IntentOperation i : intentOps) {
+            if (!(i.intent instanceof PathIntent)) {
+                log.warn("Not a path intent: {}", i);
+                continue;
+            }
+            PathIntent intent = (PathIntent) i.intent;
+            Intent parent = intent.getParentIntent();
+            long srcPort, dstPort;
+            long lastDstSw = -1, lastDstPort = -1;
+            MACAddress srcMac, dstMac;
+            if (parent instanceof ShortestPathIntent) {
+                ShortestPathIntent pathIntent = (ShortestPathIntent) parent;
+//              Switch srcSwitch = graph.getSwitch(pathIntent.getSrcSwitchDpid());
+//              srcPort = srcSwitch.getPort(pathIntent.getSrcPortNumber());
+                srcPort = pathIntent.getSrcPortNumber();
+                srcMac = MACAddress.valueOf(pathIntent.getSrcMac());
+                dstMac = MACAddress.valueOf(pathIntent.getDstMac());
+//              Switch dstSwitch = graph.getSwitch(pathIntent.getDstSwitchDpid());
+                lastDstSw = pathIntent.getDstSwitchDpid();
+//              lastDstPort = dstSwitch.getPort(pathIntent.getDstPortNumber());
+                lastDstPort = pathIntent.getDstPortNumber();
+            } else {
+                log.warn("Unsupported Intent: {}", parent);
+                continue;
+            }
+            List<FlowEntry> entries = new ArrayList<>();
+            for (LinkEvent linkEvent : intent.getPath()) {
+//              Link link = graph.getLink(linkEvent.getSrc().getDpid(),
+//                        linkEvent.getSrc().getNumber(),
+//                        linkEvent.getDst().getDpid(),
+//                        linkEvent.getDst().getNumber());
+//              Switch sw = link.getSrcSwitch();
+                long sw = linkEvent.getSrc().getDpid();
+//              dstPort = link.getSrcPort();
+                dstPort = linkEvent.getSrc().getNumber();
+                FlowEntry fe = new FlowEntry(sw, srcPort, dstPort, srcMac, dstMac, i.operator);
+                entries.add(fe);
+//              srcPort = link.getDstPort();
+                srcPort = linkEvent.getDst().getNumber();
+            }
+            if (lastDstSw >= 0 && lastDstPort >= 0) {
+                //Switch sw = lastDstPort.getSwitch();
+                long sw = lastDstSw;
+                dstPort = lastDstPort;
+                FlowEntry fe = new FlowEntry(sw, srcPort, dstPort, srcMac, dstMac, i.operator);
+                entries.add(fe);
+            }
+            // install flow entries in reverse order
+            Collections.reverse(entries);
+            flowEntries.add(entries);
+        }
+        return flowEntries;
     }
 
     private List<Set<FlowEntry>> buildPhases(List<Collection<FlowEntry>> flowEntries) {
-	Map<FlowEntry, Integer> map = new HashMap<>();
-	List<Set<FlowEntry>> plan = new ArrayList<>();
-	for(Collection<FlowEntry> c : flowEntries) {
-	    for(FlowEntry e : c) {
-		Integer i = map.get(e);
-		if(i == null) {
-		    i = Integer.valueOf(0);
-		}
-		switch(e.getOperator()) {
-		case ADD:
-		    i += 1;
-		    break;
-		case REMOVE:
-		    i -= 1;
-		    break;
-		default:
-		    break;
-		}
-		map.put(e, i);
-		// System.out.println(e + " " + e.getOperator());
-	    }
-	}
+        Map<FlowEntry, Integer> map = new HashMap<>();
+        List<Set<FlowEntry>> plan = new ArrayList<>();
+        for (Collection<FlowEntry> c : flowEntries) {
+            for (FlowEntry e : c) {
+                Integer i = map.get(e);
+                if (i == null) {
+                    i = Integer.valueOf(0);
+                }
+                switch (e.getOperator()) {
+                    case ADD:
+                        i += 1;
+                        break;
+                    case REMOVE:
+                        i -= 1;
+                        break;
+                    default:
+                        break;
+                }
+                map.put(e, i);
+                // System.out.println(e + " " + e.getOperator());
+            }
+        }
 
-	// really simple first iteration of plan
-	//TODO: optimize the map in phases
-	Set<FlowEntry> phase = new HashSet<>();
-	for(FlowEntry e : map.keySet()) {
-	    Integer i = map.get(e);
-	    if(i == 0) {
-		continue;
-	    }
-	    else if(i > 0) {
-		e.setOperator(Operator.ADD);
-	    }
-	    else if(i < 0) {
-		e.setOperator(Operator.REMOVE);
-	    }
-	    phase.add(e);
-	}
-	plan.add(phase);
+        // really simple first iteration of plan
+        //TODO: optimize the map in phases
+        Set<FlowEntry> phase = new HashSet<>();
+        for (FlowEntry e : map.keySet()) {
+            Integer i = map.get(e);
+            if (i == 0) {
+                continue;
+            } else if (i > 0) {
+                e.setOperator(Operator.ADD);
+            } else if (i < 0) {
+                e.setOperator(Operator.REMOVE);
+            }
+            phase.add(e);
+        }
+        plan.add(phase);
 
-	return plan;
+        return plan;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/runtime/PlanInstallModule.java b/src/main/java/net/onrc/onos/core/intent/runtime/PlanInstallModule.java
index 102a754..b4904c1 100644
--- a/src/main/java/net/onrc/onos/core/intent/runtime/PlanInstallModule.java
+++ b/src/main/java/net/onrc/onos/core/intent/runtime/PlanInstallModule.java
@@ -45,154 +45,152 @@
 
     @Override
     public void init(FloodlightModuleContext context)
-	    throws FloodlightModuleException {
-	floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
-	networkGraph = context.getServiceImpl(INetworkGraphService.class);
-	datagridService = context.getServiceImpl(IDatagridService.class);
-	flowPusher = context.getServiceImpl(IFlowPusherService.class);
-//	NetworkGraph graph = networkGraph.getNetworkGraph();
-	planCalc = new PlanCalcRuntime();
-	planInstall = new PlanInstallRuntime(floodlightProvider, flowPusher);
-	eventListener = new EventListener();
+            throws FloodlightModuleException {
+        floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
+        networkGraph = context.getServiceImpl(INetworkGraphService.class);
+        datagridService = context.getServiceImpl(IDatagridService.class);
+        flowPusher = context.getServiceImpl(IFlowPusherService.class);
+//      NetworkGraph graph = networkGraph.getNetworkGraph();
+        planCalc = new PlanCalcRuntime();
+        planInstall = new PlanInstallRuntime(floodlightProvider, flowPusher);
+        eventListener = new EventListener();
     }
 
     class EventListener extends Thread
-    	implements IEventChannelListener<Long, IntentOperationList> {
+            implements IEventChannelListener<Long, IntentOperationList> {
 
-	private BlockingQueue<IntentOperationList> intentQueue = new LinkedBlockingQueue<>();
-	private Long key = Long.valueOf(0);
+        private BlockingQueue<IntentOperationList> intentQueue = new LinkedBlockingQueue<>();
+        private Long key = Long.valueOf(0);
 
-	@Override
-	public void run() {
-	    while(true) {
-		try {
-		    IntentOperationList intents = intentQueue.take();
-		    //TODO: consider draining the remaining intent lists
-		    //      and processing in one big batch
-//		    List<IntentOperationList> remaining = new LinkedList<>();
-//		    intentQueue.drainTo(remaining);
+        @Override
+        public void run() {
+            while (true) {
+                try {
+                    IntentOperationList intents = intentQueue.take();
+                    //TODO: consider draining the remaining intent lists
+                    //      and processing in one big batch
+//                  List<IntentOperationList> remaining = new LinkedList<>();
+//                  intentQueue.drainTo(remaining);
 
-		    processIntents(intents);
-		} catch (InterruptedException e) {
-		    log.warn("Error taking from intent queue: {}", e.getMessage());
-		}
-	    }
-	}
+                    processIntents(intents);
+                } catch (InterruptedException e) {
+                    log.warn("Error taking from intent queue: {}", e.getMessage());
+                }
+            }
+        }
 
-	private void processIntents(IntentOperationList intents) {
-	    log("start_processIntents");
-	    log.debug("Processing OperationList {}", intents);
-	    log("begin_computePlan");
-	    List<Set<FlowEntry>> plan = planCalc.computePlan(intents);
-	    log("end_computePlan");
-	    log.debug("Plan: {}", plan);
-	    log("begin_installPlan");
-	    boolean success = planInstall.installPlan(plan);
-	    log("end_installPlan");
+        private void processIntents(IntentOperationList intents) {
+            log("start_processIntents");
+            log.debug("Processing OperationList {}", intents);
+            log("begin_computePlan");
+            List<Set<FlowEntry>> plan = planCalc.computePlan(intents);
+            log("end_computePlan");
+            log.debug("Plan: {}", plan);
+            log("begin_installPlan");
+            boolean success = planInstall.installPlan(plan);
+            log("end_installPlan");
 
-	    log("begin_sendInstallNotif");
-	    sendNotifications(intents, true, success);
-	    log("end_sendInstallNotif");
-	    log("finish");
-	}
+            log("begin_sendInstallNotif");
+            sendNotifications(intents, true, success);
+            log("end_sendInstallNotif");
+            log("finish");
+        }
 
-	private void sendNotifications(IntentOperationList intents, boolean installed, boolean success) {
-	    IntentStateList states = new IntentStateList();
-	    for(IntentOperation i : intents) {
-		IntentState newState;
-		switch(i.operator) {
-		case REMOVE:
-		    if(installed) {
-			newState = success ? IntentState.DEL_ACK : IntentState.DEL_PENDING;
-		    }
-		    else {
-			newState = IntentState.DEL_REQ;
-		    }
-		    break;
-		case ADD:
-		default:
-		    if(installed) {
-			newState = success ? IntentState.INST_ACK : IntentState.INST_NACK;
-		    }
-		    else {
-			newState = IntentState.INST_REQ;
-		    }
-		    break;
-		}
-		states.put(i.intent.getId(), newState);
-	    }
-	    intentStateChannel.addEntry(key, states);
-	    // XXX: Send notifications using the same key every time
-	    // and receive them by entryAdded() and entryUpdated()
-	    // key += 1;
-	}
+        private void sendNotifications(IntentOperationList intents, boolean installed, boolean success) {
+            IntentStateList states = new IntentStateList();
+            for (IntentOperation i : intents) {
+                IntentState newState;
+                switch (i.operator) {
+                    case REMOVE:
+                        if (installed) {
+                            newState = success ? IntentState.DEL_ACK : IntentState.DEL_PENDING;
+                        } else {
+                            newState = IntentState.DEL_REQ;
+                        }
+                        break;
+                    case ADD:
+                    default:
+                        if (installed) {
+                            newState = success ? IntentState.INST_ACK : IntentState.INST_NACK;
+                        } else {
+                            newState = IntentState.INST_REQ;
+                        }
+                        break;
+                }
+                states.put(i.intent.getId(), newState);
+            }
+            intentStateChannel.addEntry(key, states);
+            // XXX: Send notifications using the same key every time
+            // and receive them by entryAdded() and entryUpdated()
+            // key += 1;
+        }
 
-	@Override
-	public void entryAdded(IntentOperationList value) {
-	    entryUpdated(value);
-	}
+        @Override
+        public void entryAdded(IntentOperationList value) {
+            entryUpdated(value);
+        }
 
-	@Override
-	public void entryRemoved(IntentOperationList value) {
-	    // This channel is a queue, so this method is not needed
-	}
+        @Override
+        public void entryRemoved(IntentOperationList value) {
+            // This channel is a queue, so this method is not needed
+        }
 
-	@Override
-	public void entryUpdated(IntentOperationList value) {
-	    log("start_intentNotifRecv");
-	    log("begin_sendReceivedNotif");
-	    sendNotifications(value, false, false);
-	    log("end_sendReceivedNotif");
-	    log("finish");
+        @Override
+        public void entryUpdated(IntentOperationList value) {
+            log("start_intentNotifRecv");
+            log("begin_sendReceivedNotif");
+            sendNotifications(value, false, false);
+            log("end_sendReceivedNotif");
+            log("finish");
 
-	    log.debug("Added OperationList {}", value);
-	    try {
-		intentQueue.put(value);
-	    } catch (InterruptedException e) {
-		log.warn("Error putting to intent queue: {}", e.getMessage());
-	    }
-	}
+            log.debug("Added OperationList {}", value);
+            try {
+                intentQueue.put(value);
+            } catch (InterruptedException e) {
+                log.warn("Error putting to intent queue: {}", e.getMessage());
+            }
+        }
     }
 
     public static void log(String step) {
-	log.error("Time:{}, Step:{}", System.nanoTime(), step);
+        log.error("Time:{}, Step:{}", System.nanoTime(), step);
     }
 
     @Override
     public void startUp(FloodlightModuleContext context) {
-	// start subscriber
-	datagridService.addListener(PATH_INTENT_CHANNEL_NAME,
-				    	      eventListener,
-				              Long.class,
-				              IntentOperationList.class);
-	eventListener.start();
-	// start publisher
-	intentStateChannel = datagridService.createChannel(INTENT_STATE_EVENT_CHANNEL_NAME,
-						Long.class,
-						IntentStateList.class);
+        // start subscriber
+        datagridService.addListener(PATH_INTENT_CHANNEL_NAME,
+                eventListener,
+                Long.class,
+                IntentOperationList.class);
+        eventListener.start();
+        // start publisher
+        intentStateChannel = datagridService.createChannel(INTENT_STATE_EVENT_CHANNEL_NAME,
+                Long.class,
+                IntentStateList.class);
     }
 
     @Override
     public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
-	Collection<Class<? extends IFloodlightService>> l =
-		new ArrayList<Class<? extends IFloodlightService>>();
-	l.add(IFloodlightProviderService.class);
-	l.add(INetworkGraphService.class);
-	l.add(IDatagridService.class);
-	l.add(IFlowPusherService.class);
-	return l;
+        Collection<Class<? extends IFloodlightService>> l =
+                new ArrayList<Class<? extends IFloodlightService>>();
+        l.add(IFloodlightProviderService.class);
+        l.add(INetworkGraphService.class);
+        l.add(IDatagridService.class);
+        l.add(IFlowPusherService.class);
+        return l;
     }
 
     @Override
     public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-	// no services, for now
-	return null;
+        // no services, for now
+        return null;
     }
 
     @Override
     public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
-	// no services, for now
-	return null;
+        // no services, for now
+        return null;
     }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/intent/runtime/PlanInstallRuntime.java b/src/main/java/net/onrc/onos/core/intent/runtime/PlanInstallRuntime.java
index 6d5c985..114e718 100644
--- a/src/main/java/net/onrc/onos/core/intent/runtime/PlanInstallRuntime.java
+++ b/src/main/java/net/onrc/onos/core/intent/runtime/PlanInstallRuntime.java
@@ -21,136 +21,137 @@
 import org.slf4j.LoggerFactory;
 
 /**
- * 
  * @author Brian O'Connor <bocon@onlab.us>
- *
  */
 
 public class PlanInstallRuntime {
-//    NetworkGraph graph;
+    //    NetworkGraph graph;
     IFlowPusherService pusher;
     IFloodlightProviderService provider;
     private final static Logger log = LoggerFactory.getLogger(PlanInstallRuntime.class);
 
     public PlanInstallRuntime(//NetworkGraph graph, 
-	    		      IFloodlightProviderService provider,
-	                      IFlowPusherService pusher) {
-//	this.graph = graph;
-	this.provider = provider;
-	this.pusher = pusher;
+                              IFloodlightProviderService provider,
+                              IFlowPusherService pusher) {
+//      this.graph = graph;
+        this.provider = provider;
+        this.pusher = pusher;
     }
-    
+
     private static class FlowModCount {
-	IOFSwitch sw;
-	long modFlows = 0;
-	long delFlows = 0;
-	long errors = 0;
-	
-	FlowModCount(IOFSwitch sw) {
-	    this.sw = sw;
-	}
-	
-	void addFlowEntry(FlowEntry entry) {
-	    switch(entry.getOperator()){
-	    case ADD:
-		modFlows++;
-		break;
-	    case ERROR:
-		errors++;
-		break;
-	    case REMOVE:
-		delFlows++;
-		break;
-	    default:
-		break;
-	    }
-	}
-	
-	public String toString() {
-	    return "sw:" + sw.getStringId() + ": modify " + modFlows + " delete " + delFlows + " error " + errors;
-	}
-	
-	static Map<IOFSwitch, FlowModCount> map = new HashMap<>();
-	static void countFlowEntry(IOFSwitch sw, FlowEntry entry) {
-	    FlowModCount count = map.get(sw);
-	    if(count == null) {
-		count = new FlowModCount(sw);
-		map.put(sw, count);
-	    }
-	    count.addFlowEntry(entry);
-	}
-	static void startCount() {
-	    map.clear();
-	}
-	static void printCount() {
-	    String result = "FLOWMOD COUNT:\n";
-	    for(FlowModCount count : map.values()) {
-		result += count.toString() + '\n';
-	    }
-	    if(map.values().isEmpty()) {
-		result += "No flow mods installed\n";
-	    }
-	    log.error(result);
-	}
+        IOFSwitch sw;
+        long modFlows = 0;
+        long delFlows = 0;
+        long errors = 0;
+
+        FlowModCount(IOFSwitch sw) {
+            this.sw = sw;
+        }
+
+        void addFlowEntry(FlowEntry entry) {
+            switch (entry.getOperator()) {
+                case ADD:
+                    modFlows++;
+                    break;
+                case ERROR:
+                    errors++;
+                    break;
+                case REMOVE:
+                    delFlows++;
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        public String toString() {
+            return "sw:" + sw.getStringId() + ": modify " + modFlows + " delete " + delFlows + " error " + errors;
+        }
+
+        static Map<IOFSwitch, FlowModCount> map = new HashMap<>();
+
+        static void countFlowEntry(IOFSwitch sw, FlowEntry entry) {
+            FlowModCount count = map.get(sw);
+            if (count == null) {
+                count = new FlowModCount(sw);
+                map.put(sw, count);
+            }
+            count.addFlowEntry(entry);
+        }
+
+        static void startCount() {
+            map.clear();
+        }
+
+        static void printCount() {
+            String result = "FLOWMOD COUNT:\n";
+            for (FlowModCount count : map.values()) {
+                result += count.toString() + '\n';
+            }
+            if (map.values().isEmpty()) {
+                result += "No flow mods installed\n";
+            }
+            log.error(result);
+        }
     }
 
     public boolean installPlan(List<Set<FlowEntry>> plan) {
-	long start = System.nanoTime();
-	Map<Long,IOFSwitch> switches = provider.getSwitches();
-	
-	log.debug("IOFSwitches: {}", switches);
-	
-	FlowModCount.startCount();
-	for(Set<FlowEntry> phase : plan) {
-	    Set<Pair<IOFSwitch, net.onrc.onos.core.util.FlowEntry>> entries = new HashSet<>();
-	    Set<IOFSwitch> modifiedSwitches = new HashSet<>();
-	    
-	    long step1 = System.nanoTime();
-	    // convert flow entries and create pairs
-	    for(FlowEntry entry : phase) {
-		IOFSwitch sw = switches.get(entry.getSwitch());
-		if(sw == null) {
-		    // no active switch, skip this flow entry
-		    log.debug("Skipping flow entry: {}", entry);
-		    continue;
-		}
-		entries.add(new Pair<>(sw, entry.getFlowEntry()));		
-		modifiedSwitches.add(sw);
-		FlowModCount.countFlowEntry(sw, entry);
-	    }
-	    long step2 = System.nanoTime();
-	    
-	    // push flow entries to switches
-	    log.debug("Pushing flow entries: {}", entries);
-	    pusher.pushFlowEntries(entries);
-	    long step3 = System.nanoTime();
-	    
-	    // TODO: insert a barrier after each phase on each modifiedSwitch
-	    // TODO: wait for confirmation messages before proceeding
-	    List<Pair<IOFSwitch,OFMessageFuture<OFBarrierReply>>> barriers = new ArrayList<>();
-	    for(IOFSwitch sw : modifiedSwitches) {
-		barriers.add(new Pair<>(sw, pusher.barrierAsync(sw)));
-	    }
-	    for(Pair<IOFSwitch,OFMessageFuture<OFBarrierReply>> pair : barriers) {
-		IOFSwitch sw = pair.first;
-		OFMessageFuture<OFBarrierReply> future = pair.second;
-		try {
-		    future.get();
-		} catch (InterruptedException | ExecutionException e) {
-		    log.error("Barrier message not received for sw: {}", sw);
-		}
-	    }
-	    long step4 = System.nanoTime();
-	    log.error("MEASUREMENT: convert: {} ns, push: {} ns, barrierWait: {} ns",
-		    step2 - step1, step3 - step2, step4 - step3);
+        long start = System.nanoTime();
+        Map<Long, IOFSwitch> switches = provider.getSwitches();
 
-	}
-	long end = System.nanoTime();
-	log.error("MEASUREMENT: Install plan: {} ns", (end-start));
-	FlowModCount.printCount();
-	
-	// TODO: we assume that the plan installation succeeds for now
-	return true;
+        log.debug("IOFSwitches: {}", switches);
+
+        FlowModCount.startCount();
+        for (Set<FlowEntry> phase : plan) {
+            Set<Pair<IOFSwitch, net.onrc.onos.core.util.FlowEntry>> entries = new HashSet<>();
+            Set<IOFSwitch> modifiedSwitches = new HashSet<>();
+
+            long step1 = System.nanoTime();
+            // convert flow entries and create pairs
+            for (FlowEntry entry : phase) {
+                IOFSwitch sw = switches.get(entry.getSwitch());
+                if (sw == null) {
+                    // no active switch, skip this flow entry
+                    log.debug("Skipping flow entry: {}", entry);
+                    continue;
+                }
+                entries.add(new Pair<>(sw, entry.getFlowEntry()));
+                modifiedSwitches.add(sw);
+                FlowModCount.countFlowEntry(sw, entry);
+            }
+            long step2 = System.nanoTime();
+
+            // push flow entries to switches
+            log.debug("Pushing flow entries: {}", entries);
+            pusher.pushFlowEntries(entries);
+            long step3 = System.nanoTime();
+
+            // TODO: insert a barrier after each phase on each modifiedSwitch
+            // TODO: wait for confirmation messages before proceeding
+            List<Pair<IOFSwitch, OFMessageFuture<OFBarrierReply>>> barriers = new ArrayList<>();
+            for (IOFSwitch sw : modifiedSwitches) {
+                barriers.add(new Pair<>(sw, pusher.barrierAsync(sw)));
+            }
+            for (Pair<IOFSwitch, OFMessageFuture<OFBarrierReply>> pair : barriers) {
+                IOFSwitch sw = pair.first;
+                OFMessageFuture<OFBarrierReply> future = pair.second;
+                try {
+                    future.get();
+                } catch (InterruptedException | ExecutionException e) {
+                    log.error("Barrier message not received for sw: {}", sw);
+                }
+            }
+            long step4 = System.nanoTime();
+            log.error("MEASUREMENT: convert: {} ns, push: {} ns, barrierWait: {} ns",
+                    step2 - step1, step3 - step2, step4 - step3);
+
+        }
+        long end = System.nanoTime();
+        log.error("MEASUREMENT: Install plan: {} ns", (end - start));
+        FlowModCount.printCount();
+
+        // TODO: we assume that the plan installation succeeds for now
+        return true;
     }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscovery.java b/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscovery.java
index ba35850..bfc19d2 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscovery.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscovery.java
@@ -8,28 +8,29 @@
 
 public interface ILinkDiscovery {
 
-    @JsonSerialize(using=ToStringSerializer.class)
+    @JsonSerialize(using = ToStringSerializer.class)
     public enum UpdateOperation {
-    	LINK_ADDED("Link Added"), // Operation Added by ONOS
+        LINK_ADDED("Link Added"), // Operation Added by ONOS
         LINK_UPDATED("Link Updated"),
         LINK_REMOVED("Link Removed"),
         SWITCH_UPDATED("Switch Updated"),
         SWITCH_REMOVED("Switch Removed"),
         PORT_UP("Port Up"),
         PORT_DOWN("Port Down");
-        
+
         private String value;
+
         UpdateOperation(String v) {
             value = v;
         }
-        
+
         @Override
         public String toString() {
             return value;
         }
     }
 
-    public class LDUpdate implements IUpdate{
+    public class LDUpdate implements IUpdate {
         protected long src;
         protected short srcPort;
         protected long dst;
@@ -39,9 +40,9 @@
         protected UpdateOperation operation;
 
         public LDUpdate(long src, short srcPort,
-                      long dst, short dstPort,
-                      ILinkDiscovery.LinkType type,
-                      UpdateOperation operation) {
+                        long dst, short dstPort,
+                        ILinkDiscovery.LinkType type,
+                        UpdateOperation operation) {
             this.src = src;
             this.srcPort = srcPort;
             this.dst = dst;
@@ -61,7 +62,7 @@
         }
 
         // For updtedSwitch(sw)
-        public LDUpdate(long switchId, SwitchType stype, UpdateOperation oper ){
+        public LDUpdate(long switchId, SwitchType stype, UpdateOperation oper) {
             this.operation = oper;
             this.src = switchId;
             this.srcType = stype;
@@ -105,68 +106,69 @@
         public void setOperation(UpdateOperation operation) {
             this.operation = operation;
         }
-        
+
         @Override
         public String toString() {
             switch (operation) {
-            case LINK_ADDED:
-            case LINK_REMOVED:
-            case LINK_UPDATED:
-                return "LDUpdate [operation=" + operation +
-                        ", src=" + HexString.toHexString(src)
-                        + ", srcPort=" + srcPort
-                        + ", dst=" + HexString.toHexString(dst) 
-                        + ", dstPort=" + dstPort
-                        + ", type=" + type + "]";
-            case PORT_DOWN:
-            case PORT_UP:
-                return "LDUpdate [operation=" + operation +
-                        ", src=" + HexString.toHexString(src)
-                        + ", srcPort=" + srcPort + "]";
-            case SWITCH_REMOVED:
-            case SWITCH_UPDATED:
-                return "LDUpdate [operation=" + operation +
-                        ", src=" + HexString.toHexString(src) + "]";
-            default:
-                return "LDUpdate: Unknown update.";
+                case LINK_ADDED:
+                case LINK_REMOVED:
+                case LINK_UPDATED:
+                    return "LDUpdate [operation=" + operation +
+                            ", src=" + HexString.toHexString(src)
+                            + ", srcPort=" + srcPort
+                            + ", dst=" + HexString.toHexString(dst)
+                            + ", dstPort=" + dstPort
+                            + ", type=" + type + "]";
+                case PORT_DOWN:
+                case PORT_UP:
+                    return "LDUpdate [operation=" + operation +
+                            ", src=" + HexString.toHexString(src)
+                            + ", srcPort=" + srcPort + "]";
+                case SWITCH_REMOVED:
+                case SWITCH_UPDATED:
+                    return "LDUpdate [operation=" + operation +
+                            ", src=" + HexString.toHexString(src) + "]";
+                default:
+                    return "LDUpdate: Unknown update.";
             }
         }
 
-		@Override
-		public void dispatch() {
-			// TODO Auto-generated method stub
-			
-		}
+        @Override
+        public void dispatch() {
+            // TODO Auto-generated method stub
+
+        }
     }
 
     public enum SwitchType {
-        BASIC_SWITCH, CORE_SWITCH
-    };
+        BASIC_SWITCH,
+        CORE_SWITCH
+    }
 
     public enum LinkType {
         INVALID_LINK {
-        	@Override
-        	public String toString() {
-        		return "invalid";
-        	}
-        }, 
-        DIRECT_LINK{
-        	@Override
-        	public String toString() {
-        		return "internal";
-        	}
-        }, 
+            @Override
+            public String toString() {
+                return "invalid";
+            }
+        },
+        DIRECT_LINK {
+            @Override
+            public String toString() {
+                return "internal";
+            }
+        },
         MULTIHOP_LINK {
-        	@Override
-        	public String toString() {
-        		return "external";
-        	}
-        }, 
+            @Override
+            public String toString() {
+                return "external";
+            }
+        },
         TUNNEL {
-        	@Override
-        	public String toString() {
-        		return "tunnel";
-        	}
+            @Override
+            public String toString() {
+                return "tunnel";
+            }
         }
-    };
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscoveryListener.java b/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscoveryListener.java
index 53721d8..9b237c4 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscoveryListener.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscoveryListener.java
@@ -1,7 +1,7 @@
 /**
  *    Copyright 2011, Big Switch Networks, Inc. 
  *    Originally created by David Erickson, Stanford University
- * 
+ *
  *    Licensed under the Apache License, Version 2.0 (the "License"); you may
  *    not use this file except in compliance with the License. You may obtain
  *    a copy of the License at
@@ -17,7 +17,7 @@
 
 package net.onrc.onos.core.linkdiscovery;
 
-public interface ILinkDiscoveryListener extends ILinkDiscovery{
+public interface ILinkDiscoveryListener extends ILinkDiscovery {
 
     public void linkDiscoveryUpdate(LDUpdate update);
 }
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscoveryService.java b/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscoveryService.java
index 6d41532..dce8be0 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscoveryService.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/ILinkDiscoveryService.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.linkdiscovery;
 
@@ -32,19 +32,21 @@
 
     /**
      * Returns link type of a given link
+     *
      * @param info
      * @return
      */
     public ILinkDiscovery.LinkType getLinkType(Link lt, LinkInfo info);
 
     /**
-     * Returns an unmodifiable map from switch id to a set of all links with it 
+     * Returns an unmodifiable map from switch id to a set of all links with it
      * as an endpoint.
      */
     public Map<Long, Set<Link>> getSwitchLinks();
 
     /**
      * Adds a listener to listen for ILinkDiscoveryService messages
+     *
      * @param listener The listener that wants the notifications
      */
     public void addListener(ILinkDiscoveryListener listener);
@@ -76,6 +78,7 @@
 
     /**
      * Set the state for auto port fast feature.
+     *
      * @param autoPortFastFeature
      */
     public void setAutoPortFastFeature(boolean autoPortFastFeature);
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/Link.java b/src/main/java/net/onrc/onos/core/linkdiscovery/Link.java
index eb43304..254cc24 100755
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/Link.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/Link.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.linkdiscovery;
 
@@ -47,24 +47,25 @@
     }
 
     @JsonProperty("src-switch")
-    @JsonSerialize(using=DPIDSerializer.class)
+    @JsonSerialize(using = DPIDSerializer.class)
     public long getSrc() {
         return src;
     }
 
     @JsonProperty("src-port")
-    @JsonSerialize(using=UShortSerializer.class)
+    @JsonSerialize(using = UShortSerializer.class)
     public short getSrcPort() {
         return srcPort;
     }
 
     @JsonProperty("dst-switch")
-    @JsonSerialize(using=DPIDSerializer.class)
+    @JsonSerialize(using = DPIDSerializer.class)
     public long getDst() {
         return dst;
     }
+
     @JsonProperty("dst-port")
-    @JsonSerialize(using=UShortSerializer.class)
+    @JsonSerialize(using = UShortSerializer.class)
     public short getDstPort() {
         return dstPort;
     }
@@ -103,7 +104,7 @@
 
     @Override
     public String toString() {
-        return "Link [src=" + HexString.toHexString(this.src) 
+        return "Link [src=" + HexString.toHexString(this.src)
                 + " outPort="
                 + (srcPort & 0xffff)
                 + ", dst=" + HexString.toHexString(this.dst)
@@ -111,12 +112,12 @@
                 + (dstPort & 0xffff)
                 + "]";
     }
-    
+
     public String toKeyString() {
-    	return (HexString.toHexString(this.src) + "|" +
-    			(this.srcPort & 0xffff) + "|" +
-    			HexString.toHexString(this.dst) + "|" +
-    		    (this.dstPort & 0xffff) );
+        return (HexString.toHexString(this.src) + "|" +
+                (this.srcPort & 0xffff) + "|" +
+                HexString.toHexString(this.dst) + "|" +
+                (this.dstPort & 0xffff));
     }
 }
 
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/LinkInfo.java b/src/main/java/net/onrc/onos/core/linkdiscovery/LinkInfo.java
index 831c63b..89e9a19 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/LinkInfo.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/LinkInfo.java
@@ -1,17 +1,17 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc.*    Originally created by David Erickson, Stanford University
-**    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.*    Originally created by David Erickson, Stanford University
+ **    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.linkdiscovery;
 
@@ -40,7 +40,8 @@
     protected Long lastLldpReceivedTime; /* Standard LLLDP received time */
     protected Long lastBddpReceivedTime; /* Modified LLDP received time  */
 
-    /** The port states stored here are topology's last knowledge of
+    /**
+     * The port states stored here are topology's last knowledge of
      * the state of the port. This mostly mirrors the state
      * maintained in the port list in IOFSwitch (i.e. the one returned
      * from getPort), except that during a port status message the
@@ -51,10 +52,9 @@
      */
 
 
-
     public boolean linkStpBlocked() {
         return ((srcPortState & OFPortState.OFPPS_STP_MASK.getValue()) == OFPortState.OFPPS_STP_BLOCK.getValue()) ||
-            ((dstPortState & OFPortState.OFPPS_STP_MASK.getValue()) == OFPortState.OFPPS_STP_BLOCK.getValue());
+                ((dstPortState & OFPortState.OFPPS_STP_MASK.getValue()) == OFPortState.OFPPS_STP_BLOCK.getValue());
     }
 
     public Long getFirstSeenTime() {
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/NodePortTuple.java b/src/main/java/net/onrc/onos/core/linkdiscovery/NodePortTuple.java
index 8d7ba19..6e5e0c3 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/NodePortTuple.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/NodePortTuple.java
@@ -11,6 +11,7 @@
  * A NodePortTuple is similar to a SwitchPortTuple
  * but it only stores IDs instead of references
  * to the actual objects.
+ *
  * @author srini
  */
 public class NodePortTuple {
@@ -19,6 +20,7 @@
 
     /**
      * Creates a NodePortTuple
+     *
      * @param nodeId The DPID of the switch
      * @param portId The port of the switch
      */
@@ -33,22 +35,25 @@
     }
 
     @JsonProperty("switch")
-    @JsonSerialize(using=DPIDSerializer.class)
+    @JsonSerialize(using = DPIDSerializer.class)
     public long getNodeId() {
         return nodeId;
     }
+
     public void setNodeId(long nodeId) {
         this.nodeId = nodeId;
     }
+
     @JsonProperty("port")
-    @JsonSerialize(using=UShortSerializer.class)
+    @JsonSerialize(using = UShortSerializer.class)
     public short getPortId() {
         return portId;
     }
+
     public void setPortId(short portId) {
         this.portId = portId;
     }
-    
+
     public String toString() {
         return "[id=" + HexString.toHexString(nodeId) + ", port=" + new Short(portId) + "]";
     }
@@ -77,14 +82,15 @@
             return false;
         return true;
     }
-    
+
     /**
      * API to return a String value formed wtih NodeID and PortID
      * The portID is a 16-bit field, so mask it as an integer to get full
      * positive value
+     *
      * @return
      */
     public String toKeyString() {
-        return (HexString.toHexString(nodeId)+ "|" + (portId & 0xffff));
+        return (HexString.toHexString(nodeId) + "|" + (portId & 0xffff));
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologyCluster.java b/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologyCluster.java
index 172714c..c92e02e 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologyCluster.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologyCluster.java
@@ -5,39 +5,42 @@
 import org.codehaus.jackson.annotate.JsonProperty;
 import org.codehaus.jackson.map.annotate.JsonSerialize;
 
-/***
+/**
  * Topology Cluster merge/split event history related classes and members
- * @author subrata
  *
+ * @author subrata
  */
 public class EventHistoryTopologyCluster {
     // The following fields are not stored as String to save memory
     // They should be converted to appropriate human-readable strings by 
     // the front end (e.g. in cli in Python)
-    public long     dpid;
-    public long     clusterIdOld; // Switch with dpid moved from cluster x to y
-    public long     clusterIdNew;
-    public String   reason;
-    
+    public long dpid;
+    public long clusterIdOld; // Switch with dpid moved from cluster x to y
+    public long clusterIdNew;
+    public String reason;
+
     @JsonProperty("Switch")
-    @JsonSerialize(using=DPIDSerializer.class)
+    @JsonSerialize(using = DPIDSerializer.class)
     public long getDpid() {
         return dpid;
     }
+
     @JsonProperty("OldClusterId")
-    @JsonSerialize(using=DPIDSerializer.class)
+    @JsonSerialize(using = DPIDSerializer.class)
     public long getClusterIdOld() {
         return clusterIdOld;
     }
+
     @JsonProperty("NewClusterId")
-    @JsonSerialize(using=DPIDSerializer.class)
+    @JsonSerialize(using = DPIDSerializer.class)
     public long getClusterIdNew() {
         return clusterIdNew;
     }
+
     @JsonProperty("Reason")
     public String getReason() {
         return reason;
     }
-    
-    
+
+
 }
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologyLink.java b/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologyLink.java
index 378859f..9f9bed9 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologyLink.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologyLink.java
@@ -5,58 +5,65 @@
 import org.codehaus.jackson.annotate.JsonProperty;
 import org.codehaus.jackson.map.annotate.JsonSerialize;
 
-/***
+/**
  * Topology link up/down event history related classes and members
- * @author subrata
  *
+ * @author subrata
  */
 public class EventHistoryTopologyLink {
     // The following fields are not stored as String to save memory
     // They should be converted to appropriate human-readable strings by 
     // the front end (e.g. in cli in Python)
-    public long     srcSwDpid;
-    public long     dstSwDpid;
-    public int      srcPortState;
-    public int      dstPortState;
-    public int      srcSwport;
-    public int      dstSwport;
-    public String   linkType;
-    public String   reason;
-    
+    public long srcSwDpid;
+    public long dstSwDpid;
+    public int srcPortState;
+    public int dstPortState;
+    public int srcSwport;
+    public int dstSwport;
+    public String linkType;
+    public String reason;
+
     @JsonProperty("Source-Switch")
-    @JsonSerialize(using=DPIDSerializer.class)
+    @JsonSerialize(using = DPIDSerializer.class)
     public long getSrcSwDpid() {
         return srcSwDpid;
     }
+
     @JsonProperty("Dest-Switch")
-    @JsonSerialize(using=DPIDSerializer.class)
+    @JsonSerialize(using = DPIDSerializer.class)
     public long getDstSwDpid() {
         return dstSwDpid;
     }
+
     @JsonProperty("SrcPortState")
     public int getSrcPortState() {
         return srcPortState;
     }
+
     @JsonProperty("DstPortState")
     public int getDstPortState() {
         return dstPortState;
     }
+
     @JsonProperty("SrcPort")
     public int getSrcSwport() {
         return srcSwport;
     }
+
     @JsonProperty("DstPort")
     public int getDstSwport() {
         return dstSwport;
     }
+
     @JsonProperty("LinkType")
     public String getLinkType() {
         return linkType;
     }
+
     @JsonProperty("Reason")
     public String getReason() {
         return reason;
     }
-    
-    
+
+
 }
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologySwitch.java b/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologySwitch.java
index b659be7..4d77f76 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologySwitch.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/internal/EventHistoryTopologySwitch.java
@@ -6,38 +6,41 @@
 import org.codehaus.jackson.annotate.JsonProperty;
 import org.codehaus.jackson.map.annotate.JsonSerialize;
 
-/***
+/**
  * Topology Switch event history related classes and members
- * @author subrata
  *
+ * @author subrata
  */
 public class EventHistoryTopologySwitch {
     // The following fields are not stored as String to save memory
     // They should be converted to appropriate human-readable strings by 
     // the front end (e.g. in cli in Python)
-    public long     dpid;
-    public int  ipv4Addr;
-    public int    l4Port;
-    public String   reason;
-    
+    public long dpid;
+    public int ipv4Addr;
+    public int l4Port;
+    public String reason;
+
     @JsonProperty("Switch")
-    @JsonSerialize(using=DPIDSerializer.class)
+    @JsonSerialize(using = DPIDSerializer.class)
     public long getDpid() {
         return dpid;
     }
+
     @JsonProperty("IpAddr")
-    @JsonSerialize(using=IPv4Serializer.class)
+    @JsonSerialize(using = IPv4Serializer.class)
     public int getIpv4Addr() {
         return ipv4Addr;
     }
+
     @JsonProperty("Port")
     public int getL4Port() {
         return l4Port;
     }
+
     @JsonProperty("Reason")
     public String getReason() {
         return reason;
     }
-    
-    
+
+
 }
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/internal/LinkDiscoveryManager.java b/src/main/java/net/onrc/onos/core/linkdiscovery/internal/LinkDiscoveryManager.java
index daed20b..a395ab6 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/internal/LinkDiscoveryManager.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/internal/LinkDiscoveryManager.java
@@ -95,26 +95,26 @@
  * match a known switch cause a new LinkTuple to be created according to the
  * invariant rules listed below.  This new LinkTuple is also passed to routing
  * if it exists to trigger updates.
- *
+ * <p/>
  * This class also handles removing links that are associated to switch ports
  * that go down, and switches that are disconnected.
- *
+ * <p/>
  * Invariants:
- *  -portLinks and switchLinks will not contain empty Sets outside of
- *   critical sections
- *  -portLinks contains LinkTuples where one of the src or dst
- *   SwitchPortTuple matches the map key
- *  -switchLinks contains LinkTuples where one of the src or dst
- *   SwitchPortTuple's id matches the switch id
- *  -Each LinkTuple will be indexed into switchLinks for both
- *   src.id and dst.id, and portLinks for each src and dst
- *  -The updates queue is only added to from within a held write lock
+ * -portLinks and switchLinks will not contain empty Sets outside of
+ * critical sections
+ * -portLinks contains LinkTuples where one of the src or dst
+ * SwitchPortTuple matches the map key
+ * -switchLinks contains LinkTuples where one of the src or dst
+ * SwitchPortTuple's id matches the switch id
+ * -Each LinkTuple will be indexed into switchLinks for both
+ * src.id and dst.id, and portLinks for each src and dst
+ * -The updates queue is only added to from within a held write lock
  */
 @LogMessageCategory("Network Topology")
 public class LinkDiscoveryManager
-implements IOFMessageListener, IOFSwitchListener,
-ILinkDiscoveryService, IFloodlightModule {
-	protected IFloodlightProviderService controller;
+        implements IOFMessageListener, IOFSwitchListener,
+        ILinkDiscoveryService, IFloodlightModule {
+    protected IFloodlightProviderService controller;
     protected final static Logger log = LoggerFactory.getLogger(LinkDiscoveryManager.class);
 
     protected IFloodlightProviderService floodlightProvider;
@@ -127,7 +127,7 @@
     // LLDP and BDDP fields
     private static final byte[] LLDP_STANDARD_DST_MAC_STRING =
             HexString.fromHexString("01:80:c2:00:00:0e");
-    private static final long LINK_LOCAL_MASK  = 0xfffffffffff0L;
+    private static final long LINK_LOCAL_MASK = 0xfffffffffff0L;
     private static final long LINK_LOCAL_VALUE = 0x0180c2000000L;
 
     // BigSwitch OUI is 5C:16:C7, so 5D:16:C7 is the multicast version
@@ -142,27 +142,27 @@
     private static final byte TLV_DIRECTION_VALUE_FORWARD[] = {0x01};
     private static final byte TLV_DIRECTION_VALUE_REVERSE[] = {0x02};
     private static final LLDPTLV forwardTLV
-    = new LLDPTLV().
-    setType(TLV_DIRECTION_TYPE).
-    setLength(TLV_DIRECTION_LENGTH).
-    setValue(TLV_DIRECTION_VALUE_FORWARD);
+            = new LLDPTLV().
+            setType(TLV_DIRECTION_TYPE).
+            setLength(TLV_DIRECTION_LENGTH).
+            setValue(TLV_DIRECTION_VALUE_FORWARD);
 
     private static final LLDPTLV reverseTLV
-    = new LLDPTLV().
-    setType(TLV_DIRECTION_TYPE).
-    setLength(TLV_DIRECTION_LENGTH).
-    setValue(TLV_DIRECTION_VALUE_REVERSE);
+            = new LLDPTLV().
+            setType(TLV_DIRECTION_TYPE).
+            setLength(TLV_DIRECTION_LENGTH).
+            setValue(TLV_DIRECTION_VALUE_REVERSE);
 
     // Link discovery task details.
     protected SingletonTask discoveryTask;
     protected final int DISCOVERY_TASK_INTERVAL = 1;
     protected final int LINK_TIMEOUT = 35; // original 35 secs, aggressive 5 secs
-    protected final int LLDP_TO_ALL_INTERVAL = 15 ; //original 15 seconds, aggressive 2 secs.
+    protected final int LLDP_TO_ALL_INTERVAL = 15; //original 15 seconds, aggressive 2 secs.
     protected long lldpClock = 0;
     // This value is intentionally kept higher than LLDP_TO_ALL_INTERVAL.
     // If we want to identify link failures faster, we could decrease this
     // value to a small number, say 1 or 2 sec.
-    protected final int LLDP_TO_KNOWN_INTERVAL= 20; // LLDP frequency for known links
+    protected final int LLDP_TO_KNOWN_INTERVAL = 20; // LLDP frequency for known links
 
     protected LLDPTLV controllerTLV;
     protected ReentrantReadWriteLock lock;
@@ -209,34 +209,34 @@
 
     protected class LinkUpdate extends LDUpdate {
 
-		public LinkUpdate(LDUpdate old) {
-			super(old);
-		}
-		@LogMessageDoc(level="ERROR",
-	            message="Error in link discovery updates loop",
-	            explanation="An unknown error occured while dispatching " +
-	            		"link update notifications",
-	            recommendation=LogMessageDoc.GENERIC_ACTION)
-		@Override
-		public void dispatch() {
-			if (linkDiscoveryAware != null) {
+        public LinkUpdate(LDUpdate old) {
+            super(old);
+        }
+
+        @LogMessageDoc(level = "ERROR",
+                message = "Error in link discovery updates loop",
+                explanation = "An unknown error occured while dispatching " +
+                        "link update notifications",
+                recommendation = LogMessageDoc.GENERIC_ACTION)
+        @Override
+        public void dispatch() {
+            if (linkDiscoveryAware != null) {
                 if (log.isTraceEnabled()) {
                     log.trace("Dispatching link discovery update {} {} {} {} {} for {}",
-                              new Object[]{this.getOperation(),
-                                           HexString.toHexString(this.getSrc()), this.getSrcPort(),
-                                           HexString.toHexString(this.getDst()), this.getDstPort(),
-                                           linkDiscoveryAware});
+                            new Object[]{this.getOperation(),
+                                    HexString.toHexString(this.getSrc()), this.getSrcPort(),
+                                    HexString.toHexString(this.getDst()), this.getDstPort(),
+                                    linkDiscoveryAware});
                 }
                 try {
                     for (ILinkDiscoveryListener lda : linkDiscoveryAware) { // order maintained
                         lda.linkDiscoveryUpdate(this);
                     }
-                }
-                catch (Exception e) {
+                } catch (Exception e) {
                     log.error("Error in link discovery updates loop", e);
                 }
             }
-		}
+        }
     }
 
     /**
@@ -244,7 +244,8 @@
      */
     protected Set<NodePortTuple> suppressLinkDiscovery;
 
-    /** A list of ports that are quarantined for discovering links through
+    /**
+     * A list of ports that are quarantined for discovering links through
      * them.  Data traffic from these ports are not allowed until the ports
      * are released from quarantine.
      */
@@ -265,6 +266,7 @@
 
     /**
      * Get the LLDP sending period in seconds.
+     *
      * @return LLDP sending period in seconds.
      */
     public int getLldpFrequency() {
@@ -273,6 +275,7 @@
 
     /**
      * Get the LLDP timeout value in seconds
+     *
      * @return LLDP timeout value in seconds
      */
     public int getLldpTimeout() {
@@ -293,8 +296,7 @@
      * Remove any known links on the switch port.
      */
     @Override
-    public void AddToSuppressLLDPs(long sw, short port)
-    {
+    public void AddToSuppressLLDPs(long sw, short port) {
         NodePortTuple npt = new NodePortTuple(sw, port);
         this.suppressLinkDiscovery.add(npt);
         deleteLinksOnPort(npt, "LLDP suppressed.");
@@ -305,8 +307,7 @@
      * Discover links on that switchport.
      */
     @Override
-    public void RemoveFromSuppressLLDPs(long sw, short port)
-    {
+    public void RemoveFromSuppressLLDPs(long sw, short port) {
         NodePortTuple npt = new NodePortTuple(sw, port);
         this.suppressLinkDiscovery.remove(npt);
         discover(npt);
@@ -341,7 +342,7 @@
         timeoutLinks();
 
         //increment LLDP clock
-        lldpClock = (lldpClock + 1)% LLDP_TO_ALL_INTERVAL;
+        lldpClock = (lldpClock + 1) % LLDP_TO_ALL_INTERVAL;
 
         if (lldpClock == 0) {
             log.debug("Sending LLDP out on all ports.");
@@ -351,19 +352,18 @@
 
 
     /**
-     *  Quarantine Ports.
+     * Quarantine Ports.
      */
     protected class QuarantineWorker implements Runnable {
         @Override
         public void run() {
             try {
                 processBDDPLists();
-            }
-            catch (Exception e) {
+            } catch (Exception e) {
                 log.error("Error in quarantine worker thread", e);
             } finally {
-                    bddpTask.reschedule(BDDP_TASK_INTERVAL,
-                                              TimeUnit.MILLISECONDS);
+                bddpTask.reschedule(BDDP_TASK_INTERVAL,
+                        TimeUnit.MILLISECONDS);
             }
         }
     }
@@ -372,6 +372,7 @@
      * Add a switch port to the quarantine queue. Schedule the
      * quarantine task if the quarantine queue was empty before adding
      * this switch port.
+     *
      * @param npt
      */
     protected void addToQuarantineQueue(NodePortTuple npt) {
@@ -384,11 +385,12 @@
      */
     protected void removeFromQuarantineQueue(NodePortTuple npt) {
         // Remove all occurrences of the node port tuple from the list.
-        while (quarantineQueue.remove(npt));
+        while (quarantineQueue.remove(npt)) ;
     }
 
     /**
      * Add a switch port to maintenance queue.
+     *
      * @param npt
      */
     protected void addToMaintenanceQueue(NodePortTuple npt) {
@@ -401,26 +403,27 @@
 
     /**
      * Remove a switch port from maintenance queue.
+     *
      * @param npt
      */
     protected void removeFromMaintenanceQueue(NodePortTuple npt) {
         // Remove all occurrences of the node port tuple from the queue.
-        while (maintenanceQueue.remove(npt));
+        while (maintenanceQueue.remove(npt)) ;
     }
 
     /**
-    * This method processes the quarantine list in bursts.  The task is
-    * at most once per BDDP_TASK_INTERVAL.
-    * One each call, BDDP_TASK_SIZE number of switch ports are processed.
-    * Once the BDDP packets are sent out through the switch ports, the ports
-    * are removed from the quarantine list.
-    */
+     * This method processes the quarantine list in bursts.  The task is
+     * at most once per BDDP_TASK_INTERVAL.
+     * One each call, BDDP_TASK_SIZE number of switch ports are processed.
+     * Once the BDDP packets are sent out through the switch ports, the ports
+     * are removed from the quarantine list.
+     */
 
     protected void processBDDPLists() {
         int count = 0;
         Set<NodePortTuple> nptList = new HashSet<NodePortTuple>();
 
-        while(count < BDDP_TASK_SIZE && quarantineQueue.peek() !=null) {
+        while (count < BDDP_TASK_SIZE && quarantineQueue.peek() != null) {
             NodePortTuple npt;
             npt = quarantineQueue.remove();
             sendDiscoveryMessage(npt.getNodeId(), npt.getPortId(), false, false);
@@ -436,7 +439,7 @@
             count++;
         }
 
-        for(NodePortTuple npt:nptList) {
+        for (NodePortTuple npt : nptList) {
             generateSwitchPortStatusUpdate(npt.getNodeId(), npt.getPortId());
         }
     }
@@ -487,7 +490,7 @@
         nptSet.addAll(portLinks.keySet());
 
         // Send LLDP from each of them.
-        for(NodePortTuple npt: nptSet) {
+        for (NodePortTuple npt : nptSet) {
             discover(npt);
         }
     }
@@ -504,27 +507,27 @@
      * Learn remote switches when running as a distributed controller ONOS
      */
     protected IOFSwitch addRemoteSwitch(long sw, short port) {
-    	IOnosRemoteSwitch remotesw = null;
+        IOnosRemoteSwitch remotesw = null;
 
-    	// add a switch if we have not seen it before
-    	remotesw = remoteSwitches.get(sw);
+        // add a switch if we have not seen it before
+        remotesw = remoteSwitches.get(sw);
 
-    	if (remotesw == null) {
-        	remotesw = new OFSwitchImpl();
-        	remotesw.setupRemoteSwitch(sw);
-        	remoteSwitches.put(remotesw.getId(), remotesw);
-        	log.debug("addRemoteSwitch(): added fake remote sw {}", remotesw);
+        if (remotesw == null) {
+            remotesw = new OFSwitchImpl();
+            remotesw.setupRemoteSwitch(sw);
+            remoteSwitches.put(remotesw.getId(), remotesw);
+            log.debug("addRemoteSwitch(): added fake remote sw {}", remotesw);
         }
 
         // add the port if we have not seen it before
         if (remotesw.getPort(port) == null) {
-        	OFPhysicalPort remoteport = new OFPhysicalPort();
-        	remoteport.setPortNumber(port);
-        	remoteport.setName("fake_" + port);
-        	remoteport.setConfig(0);
-        	remoteport.setState(0);
-        	remotesw.setPort(remoteport);
-        	log.debug("addRemoteSwitch(): added fake remote port {} to sw {}", remoteport, remotesw.getId());
+            OFPhysicalPort remoteport = new OFPhysicalPort();
+            remoteport.setPortNumber(port);
+            remoteport.setName("fake_" + port);
+            remoteport.setConfig(0);
+            remoteport.setState(0);
+            remotesw.setPort(remoteport);
+            log.debug("addRemoteSwitch(): added fake remote port {} to sw {}", remoteport, remotesw.getId());
         }
 
         return remotesw;
@@ -534,22 +537,23 @@
      * Send link discovery message out of a given switch port.
      * The discovery message may be a standard LLDP or a modified
      * LLDP, where the dst mac address is set to :ff.
-     *
+     * <p/>
      * TODO: The modified LLDP will updated in the future and may
      * use a different eth-type.
+     *
      * @param sw
      * @param port
-     * @param isStandard   indicates standard or modified LLDP
-     * @param isReverse    indicates whether the LLDP was sent as a response
+     * @param isStandard indicates standard or modified LLDP
+     * @param isReverse  indicates whether the LLDP was sent as a response
      */
-    @LogMessageDoc(level="ERROR",
-            message="Failure sending LLDP out port {port} on switch {switch}",
-            explanation="An I/O error occured while sending LLDP message " +
-            		"to the switch.",
-            recommendation=LogMessageDoc.CHECK_SWITCH)
+    @LogMessageDoc(level = "ERROR",
+            message = "Failure sending LLDP out port {port} on switch {switch}",
+            explanation = "An I/O error occured while sending LLDP message " +
+                    "to the switch.",
+            recommendation = LogMessageDoc.CHECK_SWITCH)
     protected void sendDiscoveryMessage(long sw, short port,
-                             boolean isStandard,
-                             boolean isReverse) {
+                                        boolean isStandard,
+                                        boolean isReverse) {
 
         IOFSwitch iofSwitch = floodlightProvider.getSwitches().get(sw);
         if (iofSwitch == null) {
@@ -581,17 +585,17 @@
 
         if (log.isTraceEnabled()) {
             log.trace("Sending LLDP packet out of swich: {}, port: {}",
-                      sw, port);
+                    sw, port);
         }
 
         // using "nearest customer bridge" MAC address for broadest possible propagation
         // through provider and TPMR bridges (see IEEE 802.1AB-2009 and 802.1Q-2011),
         // in particular the Linux bridge which behaves mostly like a provider bridge
-        byte[] chassisId = new byte[] {4, 0, 0, 0, 0, 0, 0}; // filled in later
-        byte[] portId = new byte[] {2, 0, 0}; // filled in later
-        byte[] ttlValue = new byte[] {0, 0x78};
+        byte[] chassisId = new byte[]{4, 0, 0, 0, 0, 0, 0}; // filled in later
+        byte[] portId = new byte[]{2, 0, 0}; // filled in later
+        byte[] ttlValue = new byte[]{0, 0x78};
         // OpenFlow OUI - 00-26-E1
-        byte[] dpidTLVValue = new byte[] {0x0, 0x26, (byte) 0xe1, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+        byte[] dpidTLVValue = new byte[]{0x0, 0x26, (byte) 0xe1, 0, 0, 0, 0, 0, 0, 0, 0, 0};
         LLDPTLV dpidTLV = new LLDPTLV().setType((byte) 127).setLength((short) dpidTLVValue.length).setValue(dpidTLVValue);
 
         byte[] dpidArray = new byte[8];
@@ -612,7 +616,7 @@
         portBB.putShort(port);
         if (log.isTraceEnabled()) {
             log.trace("Sending LLDP out of interface: {}/{}",
-                      HexString.toHexString(sw), port);
+                    HexString.toHexString(sw), port);
         }
 
         LLDP lldp = new LLDP();
@@ -625,25 +629,25 @@
         lldp.getOptionalTLVList().add(controllerTLV);
         if (isReverse) {
             lldp.getOptionalTLVList().add(reverseTLV);
-        }else {
+        } else {
             lldp.getOptionalTLVList().add(forwardTLV);
         }
 
         Ethernet ethernet;
         if (isStandard) {
             ethernet = new Ethernet()
-            .setSourceMACAddress(ofpPort.getHardwareAddress())
-            .setDestinationMACAddress(LLDP_STANDARD_DST_MAC_STRING)
-            .setEtherType(Ethernet.TYPE_LLDP);
+                    .setSourceMACAddress(ofpPort.getHardwareAddress())
+                    .setDestinationMACAddress(LLDP_STANDARD_DST_MAC_STRING)
+                    .setEtherType(Ethernet.TYPE_LLDP);
             ethernet.setPayload(lldp);
         } else {
             BSN bsn = new BSN(BSN.BSN_TYPE_BDDP);
             bsn.setPayload(lldp);
 
             ethernet = new Ethernet()
-            .setSourceMACAddress(ofpPort.getHardwareAddress())
-            .setDestinationMACAddress(LLDP_BSN_DST_MAC_STRING)
-            .setEtherType(Ethernet.TYPE_BSN);
+                    .setSourceMACAddress(ofpPort.getHardwareAddress())
+                    .setDestinationMACAddress(LLDP_BSN_DST_MAC_STRING)
+                    .setEtherType(Ethernet.TYPE_BSN);
             ethernet.setPayload(bsn);
         }
 
@@ -669,7 +673,7 @@
             iofSwitch.write(po, null);
             iofSwitch.flush();
         } catch (IOException e) {
-            log.error("Failure sending LLDP out port "+port+" on switch "+iofSwitch.getStringId(), e);
+            log.error("Failure sending LLDP out port " + port + " on switch " + iofSwitch.getStringId(), e);
         }
 
     }
@@ -683,11 +687,11 @@
         }
         Set<Long> switches = floodlightProvider.getSwitches().keySet();
         // Send standard LLDPs
-        for (long sw: switches) {
+        for (long sw : switches) {
             IOFSwitch iofSwitch = floodlightProvider.getSwitches().get(sw);
             if (iofSwitch == null) continue;
             if (iofSwitch.getEnabledPorts() != null) {
-                for (OFPhysicalPort ofp: iofSwitch.getEnabledPorts()) {
+                for (OFPhysicalPort ofp : iofSwitch.getEnabledPorts()) {
                     if (isLinkDiscoverySuppressed(sw, ofp.getPortNumber()))
                         continue;
                     if (autoPortFastFeature && isFastPort(sw, ofp.getPortNumber()))
@@ -714,10 +718,10 @@
         InetAddress localIPAddress = null;
         NetworkInterface localInterface = null;
 
-        byte[] controllerTLVValue = new byte[] {0, 0, 0, 0, 0, 0, 0, 0};  // 8 byte value.
+        byte[] controllerTLVValue = new byte[]{0, 0, 0, 0, 0, 0, 0, 0};  // 8 byte value.
         ByteBuffer bb = ByteBuffer.allocate(10);
 
-        try{
+        try {
             localIPAddress = java.net.InetAddress.getLocalHost();
             localInterface = NetworkInterface.getByInetAddress(localIPAddress);
         } catch (Exception e) {
@@ -787,16 +791,16 @@
         for (LLDPTLV lldptlv : lldp.getOptionalTLVList()) {
             if (lldptlv.getType() == 127 && lldptlv.getLength() == 12 &&
                     lldptlv.getValue()[0] == 0x0 && lldptlv.getValue()[1] == 0x26 &&
-                    lldptlv.getValue()[2] == (byte)0xe1 && lldptlv.getValue()[3] == 0x0) {
+                    lldptlv.getValue()[2] == (byte) 0xe1 && lldptlv.getValue()[3] == 0x0) {
                 ByteBuffer dpidBB = ByteBuffer.wrap(lldptlv.getValue());
                 remoteSwitch = floodlightProvider.getSwitches().get(dpidBB.getLong(4));
                 if (remoteSwitch == null) {
-                	// Added by ONOS
-                	// floodlight LLDP coming from a remote switch connected to a different controller
-                	// add it to our cache of unconnected remote switches
-                	remoteSwitch = addRemoteSwitch(dpidBB.getLong(4), remotePort);
+                    // Added by ONOS
+                    // floodlight LLDP coming from a remote switch connected to a different controller
+                    // add it to our cache of unconnected remote switches
+                    remoteSwitch = addRemoteSwitch(dpidBB.getLong(4), remotePort);
                 }
-            } else if (lldptlv.getType() == 12 && lldptlv.getLength() == 8){
+            } else if (lldptlv.getType() == 12 && lldptlv.getLength() == 8) {
                 otherId = ByteBuffer.wrap(lldptlv.getValue()).getLong();
                 if (myId == otherId)
                     myLLDP = true;
@@ -818,15 +822,14 @@
                     log.trace("Getting standard LLDP from a different controller and quelching it.");
                 }
                 return Command.STOP;
-            }
-            else if(sw <= remoteSwitch.getId()){
+            } else if (sw <= remoteSwitch.getId()) {
                 if (log.isTraceEnabled()) {
                     log.trace("Getting BBDP from a different controller. myId {}: remoteId {}", myId, otherId);
                     log.trace("and my controller id is smaller than the other, so quelching it. myPort {}: rPort {}", pi.getInPort(), remotePort);
-                  }
-                  //XXX ONOS: Fix the BDDP broadcast issue
-                  //return Command.CONTINUE;
-                  return Command.STOP;
+                }
+                //XXX ONOS: Fix the BDDP broadcast issue
+                //return Command.CONTINUE;
+                return Command.STOP;
             }
             /*
             else if (myId < otherId)  {
@@ -858,10 +861,10 @@
             return Command.STOP;
         }
         if (suppressLinkDiscovery.contains(new NodePortTuple(remoteSwitch.getId(),
-                                                     remotePort))) {
+                remotePort))) {
             if (log.isTraceEnabled()) {
                 log.trace("Ignoring link with suppressed src port: switch {} port {}",
-                      remoteSwitch, remotePort);
+                        remoteSwitch, remotePort);
             }
             return Command.STOP;
         }
@@ -893,7 +896,7 @@
 
         LinkInfo newLinkInfo =
                 new LinkInfo(firstSeenTime, lastLldpTime, lastBddpTime,
-                             srcPortState, dstPortState);
+                        srcPortState, dstPortState);
 
         addOrUpdateLink(lt, newLinkInfo);
 
@@ -905,7 +908,7 @@
         newLinkInfo = links.get(lt);
         if (newLinkInfo != null && isStandard && isReverse == false) {
             Link reverseLink = new Link(lt.getDst(), lt.getDstPort(),
-                                        lt.getSrc(), lt.getSrcPort());
+                    lt.getSrc(), lt.getSrcPort());
             LinkInfo reverseInfo = links.get(reverseLink);
             if (reverseInfo == null) {
                 // the reverse link does not exist.
@@ -919,12 +922,12 @@
         // link as well.
         if (!isStandard) {
             Link reverseLink = new Link(lt.getDst(), lt.getDstPort(),
-                                        lt.getSrc(), lt.getSrcPort());
+                    lt.getSrc(), lt.getSrcPort());
 
             // srcPortState and dstPort state are reversed.
             LinkInfo reverseInfo =
                     new LinkInfo(firstSeenTime, lastLldpTime, lastBddpTime,
-                                 dstPortState, srcPortState);
+                            dstPortState, srcPortState);
 
             addOrUpdateLink(reverseLink, reverseInfo);
         }
@@ -945,9 +948,9 @@
                                      FloodlightContext cntx) {
         Ethernet eth =
                 IFloodlightProviderService.bcStore.get(cntx,
-                                                       IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
+                        IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
 
-        if(eth.getEtherType() == Ethernet.TYPE_BSN) {
+        if (eth.getEtherType() == Ethernet.TYPE_BSN) {
             BSN bsn = (BSN) eth.getPayload();
             if (bsn == null) return Command.STOP;
             if (bsn.getPayload() == null) return Command.STOP;
@@ -956,11 +959,11 @@
             if (bsn.getPayload() instanceof LLDP == false)
                 return Command.CONTINUE;
             return handleLldp((LLDP) bsn.getPayload(), sw, pi, false, cntx);
-        } else if (eth.getEtherType() == Ethernet.TYPE_LLDP)  {
+        } else if (eth.getEtherType() == Ethernet.TYPE_LLDP) {
             return handleLldp((LLDP) eth.getPayload(), sw, pi, true, cntx);
         } else if (eth.getEtherType() < 1500) {
             long destMac = eth.getDestinationMAC().toLong();
-            if ((destMac & LINK_LOCAL_MASK) == LINK_LOCAL_VALUE){
+            if ((destMac & LINK_LOCAL_MASK) == LINK_LOCAL_VALUE) {
                 if (log.isTraceEnabled()) {
                     log.trace("Ignoring packet addressed to 802.1D/Q " +
                             "reserved address.");
@@ -980,18 +983,17 @@
                                                  int dstPortState) {
         boolean added =
                 (((srcPortState &
-                   OFPortState.OFPPS_STP_MASK.getValue()) !=
-                   OFPortState.OFPPS_STP_BLOCK.getValue()) &&
-                ((dstPortState &
-                  OFPortState.OFPPS_STP_MASK.getValue()) !=
-                  OFPortState.OFPPS_STP_BLOCK.getValue()));
+                        OFPortState.OFPPS_STP_MASK.getValue()) !=
+                        OFPortState.OFPPS_STP_BLOCK.getValue()) &&
+                        ((dstPortState &
+                                OFPortState.OFPPS_STP_MASK.getValue()) !=
+                                OFPortState.OFPPS_STP_BLOCK.getValue()));
 
         if (added) return UpdateOperation.LINK_UPDATED;
         return UpdateOperation.LINK_REMOVED;
     }
 
 
-
     protected UpdateOperation getUpdateOperation(int srcPortState) {
         boolean portUp = ((srcPortState &
                 OFPortState.OFPPS_STP_MASK.getValue()) !=
@@ -1016,8 +1018,8 @@
 
             if (log.isTraceEnabled()) {
                 log.trace("addOrUpdateLink: {} {}",
-                          lt,
-                          (newInfo.getMulticastValidTime()!=null) ? "multicast" : "unicast");
+                        lt,
+                        (newInfo.getMulticastValidTime() != null) ? "multicast" : "unicast");
             }
 
             UpdateOperation updateOperation = null;
@@ -1056,12 +1058,12 @@
 
                 // Add to event history
                 evHistTopoLink(lt.getSrc(),
-                               lt.getDst(),
-                               lt.getSrcPort(),
-                               lt.getDstPort(),
-                               newInfo.getSrcPortState(), newInfo.getDstPortState(),
-                               getLinkType(lt, newInfo),
-                               EvAction.LINK_ADDED, "LLDP Recvd");
+                        lt.getDst(),
+                        lt.getSrcPort(),
+                        lt.getDstPort(),
+                        newInfo.getSrcPortState(), newInfo.getDstPortState(),
+                        getLinkType(lt, newInfo),
+                        EvAction.LINK_ADDED, "LLDP Recvd");
             } else {
                 // Since the link info is already there, we need to
                 // update the right fields.
@@ -1099,33 +1101,33 @@
                 if (newInfo.getSrcPortState().intValue() !=
                         oldInfo.getSrcPortState().intValue() ||
                         newInfo.getDstPortState().intValue() !=
-                        oldInfo.getDstPortState().intValue())
+                                oldInfo.getDstPortState().intValue())
                     linkChanged = true;
 
                 if (linkChanged) {
                     updateOperation = getUpdateOperation(newInfo.getSrcPortState(),
-                                                         newInfo.getDstPortState());
+                            newInfo.getDstPortState());
                     if (log.isTraceEnabled()) {
                         log.trace("Updated link {}", lt);
                     }
                     // Add to event history
                     evHistTopoLink(lt.getSrc(),
-                                   lt.getDst(),
-                                   lt.getSrcPort(),
-                                   lt.getDstPort(),
-                                   newInfo.getSrcPortState(), newInfo.getDstPortState(),
-                                   getLinkType(lt, newInfo),
-                                   EvAction.LINK_PORT_STATE_UPDATED,
-                                   "LLDP Recvd");
+                            lt.getDst(),
+                            lt.getSrcPort(),
+                            lt.getDstPort(),
+                            newInfo.getSrcPortState(), newInfo.getDstPortState(),
+                            getLinkType(lt, newInfo),
+                            EvAction.LINK_PORT_STATE_UPDATED,
+                            "LLDP Recvd");
                 }
             }
 
             if (linkChanged) {
                 // find out if the link was added or removed here.
                 LinkUpdate update = new LinkUpdate(new LDUpdate(lt.getSrc(), lt.getSrcPort(),
-                                         lt.getDst(), lt.getDstPort(),
-                                         getLinkType(lt, newInfo),
-                                         updateOperation));
+                        lt.getDst(), lt.getDstPort(),
+                        getLinkType(lt, newInfo),
+                        updateOperation));
                 controller.publishUpdate(update);
             }
         } finally {
@@ -1142,6 +1144,7 @@
 
     /**
      * Removes links from memory and storage.
+     *
      * @param links The List of @LinkTuple to delete.
      */
     protected void deleteLinks(List<Link> links, String reason) {
@@ -1151,7 +1154,7 @@
         try {
             for (Link lt : links) {
                 srcNpt = new NodePortTuple(lt.getSrc(), lt.getSrcPort());
-                dstNpt  =new NodePortTuple(lt.getDst(), lt.getDstPort());
+                dstNpt = new NodePortTuple(lt.getDst(), lt.getDstPort());
 
                 switchLinks.get(lt.getSrc()).remove(lt);
                 switchLinks.get(lt.getDst()).remove(lt);
@@ -1175,19 +1178,19 @@
 
                 LinkInfo info = this.links.remove(lt);
                 LinkUpdate update = new LinkUpdate(new LDUpdate(lt.getSrc(), lt.getSrcPort(),
-                                         lt.getDst(), lt.getDstPort(),
-                                         getLinkType(lt, info),
-                                         UpdateOperation.LINK_REMOVED));
+                        lt.getDst(), lt.getDstPort(),
+                        getLinkType(lt, info),
+                        UpdateOperation.LINK_REMOVED));
                 controller.publishUpdate(update);
 
                 // Update Event History
                 evHistTopoLink(lt.getSrc(),
-                               lt.getDst(),
-                               lt.getSrcPort(),
-                               lt.getDstPort(),
-                               0, 0, // Port states
-                               ILinkDiscovery.LinkType.INVALID_LINK,
-                               EvAction.LINK_DELETED, reason);
+                        lt.getDst(),
+                        lt.getSrcPort(),
+                        lt.getDstPort(),
+                        0, 0, // Port states
+                        ILinkDiscovery.LinkType.INVALID_LINK,
+                        EvAction.LINK_DELETED, reason);
 
                 // TODO  Whenever link is removed, it has to checked if
                 // the switchports must be added to quarantine.
@@ -1204,6 +1207,7 @@
     /**
      * Handles an OFPortStatus message from a switch. We will add or
      * delete LinkTupes as well re-compute the topology if needed.
+     *
      * @param sw The IOFSwitch that sent the port status message
      * @param ps The OFPortStatus message
      * @return The Command to continue or stop after we process this message
@@ -1214,57 +1218,57 @@
         if (iofSwitch == null) return Command.CONTINUE;
 
         // ONOS: If we do not control this switch, then we should not process its port status messages
-        if (!registryService.hasControl(iofSwitch.getId())) return Command.CONTINUE;
+        if (!registryService.hasControl(iofSwitch.getId()))
+            return Command.CONTINUE;
 
         if (log.isTraceEnabled()) {
             log.trace("handlePortStatus: Switch {} port #{} reason {}; " +
                     "config is {} state is {}",
-                    new Object[] {iofSwitch.getStringId(),
-                                  ps.getDesc().getPortNumber(),
-                                  ps.getReason(),
-                                  ps.getDesc().getConfig(),
-                                  ps.getDesc().getState()});
+                    new Object[]{iofSwitch.getStringId(),
+                            ps.getDesc().getPortNumber(),
+                            ps.getReason(),
+                            ps.getDesc().getConfig(),
+                            ps.getDesc().getState()});
         }
 
         short port = ps.getDesc().getPortNumber();
         NodePortTuple npt = new NodePortTuple(sw, port);
-        boolean linkDeleted  = false;
+        boolean linkDeleted = false;
         boolean linkInfoChanged = false;
 
         lock.writeLock().lock();
         try {
             // if ps is a delete, or a modify where the port is down or
             // configured down
-            if ((byte)OFPortReason.OFPPR_DELETE.ordinal() == ps.getReason() ||
-                    ((byte)OFPortReason.OFPPR_MODIFY.ordinal() ==
-                    ps.getReason() && !portEnabled(ps.getDesc()))) {
+            if ((byte) OFPortReason.OFPPR_DELETE.ordinal() == ps.getReason() ||
+                    ((byte) OFPortReason.OFPPR_MODIFY.ordinal() ==
+                            ps.getReason() && !portEnabled(ps.getDesc()))) {
                 deleteLinksOnPort(npt, "Port Status Changed");
                 LinkUpdate update = new LinkUpdate(new LDUpdate(sw, port, UpdateOperation.PORT_DOWN));
                 controller.publishUpdate(update);
                 linkDeleted = true;
-                }
-            else if (ps.getReason() ==
-                    (byte)OFPortReason.OFPPR_MODIFY.ordinal()) {
+            } else if (ps.getReason() ==
+                    (byte) OFPortReason.OFPPR_MODIFY.ordinal()) {
                 // If ps is a port modification and the port state has changed
                 // that affects links in the topology
 
                 if (this.portLinks.containsKey(npt)) {
-                    for (Link lt: this.portLinks.get(npt)) {
+                    for (Link lt : this.portLinks.get(npt)) {
                         LinkInfo linkInfo = links.get(lt);
-                        assert(linkInfo != null);
+                        assert (linkInfo != null);
                         Integer updatedSrcPortState = null;
                         Integer updatedDstPortState = null;
                         if (lt.getSrc() == npt.getNodeId() &&
                                 lt.getSrcPort() == npt.getPortId() &&
                                 (linkInfo.getSrcPortState() !=
-                                ps.getDesc().getState())) {
+                                        ps.getDesc().getState())) {
                             updatedSrcPortState = ps.getDesc().getState();
                             linkInfo.setSrcPortState(updatedSrcPortState);
                         }
                         if (lt.getDst() == npt.getNodeId() &&
                                 lt.getDstPort() == npt.getPortId() &&
                                 (linkInfo.getDstPortState() !=
-                                ps.getDesc().getState())) {
+                                        ps.getDesc().getState())) {
                             updatedDstPortState = ps.getDesc().getState();
                             linkInfo.setDstPortState(updatedDstPortState);
                         }
@@ -1275,11 +1279,11 @@
                             // send an LinkUpdate.
                             UpdateOperation operation =
                                     getUpdateOperation(linkInfo.getSrcPortState(),
-                                                       linkInfo.getDstPortState());
+                                            linkInfo.getDstPortState());
                             LinkUpdate update = new LinkUpdate(new LDUpdate(lt.getSrc(), lt.getSrcPort(),
-                                                     lt.getDst(), lt.getDstPort(),
-                                                     getLinkType(lt, linkInfo),
-                                                     operation));
+                                    lt.getDst(), lt.getDstPort(),
+                                    getLinkType(lt, linkInfo),
+                                    operation));
                             controller.publishUpdate(update);
 
                             linkInfoChanged = true;
@@ -1293,13 +1297,13 @@
                 controller.publishUpdate(update);
             }
 
-            if (!linkDeleted && !linkInfoChanged){
+            if (!linkDeleted && !linkInfoChanged) {
                 if (log.isTraceEnabled()) {
-                    log.trace("handlePortStatus: Switch {} port #{} reason {};"+
+                    log.trace("handlePortStatus: Switch {} port #{} reason {};" +
                             " no links to update/remove",
-                            new Object[] {HexString.toHexString(sw),
-                                          ps.getDesc().getPortNumber(),
-                                          ps.getReason()});
+                            new Object[]{HexString.toHexString(sw),
+                                    ps.getDesc().getPortNumber(),
+                                    ps.getReason()});
                 }
             }
         } finally {
@@ -1324,17 +1328,16 @@
      * If autoportfast feature is enabled and the port is a fast port, then
      * do nothing.
      * Otherwise, send LLDP message.  Add the port to quarantine.
+     *
      * @param sw
      * @param p
      */
     private void processNewPort(long sw, short p) {
         if (isLinkDiscoverySuppressed(sw, p)) {
             // Do nothing as link discovery is suppressed.
-        }
-        else if (autoPortFastFeature && isFastPort(sw, p)) {
+        } else if (autoPortFastFeature && isFastPort(sw, p)) {
             // Do nothing as the port is a fast port.
-        }
-        else {
+        } else {
             NodePortTuple npt = new NodePortTuple(sw, p);
             discover(sw, p);
             // if it is not a fast port, add it to quarantine.
@@ -1350,6 +1353,7 @@
 
     /**
      * We send out LLDP messages when a switch is added to discover the topology
+     *
      * @param sw The IOFSwitch that connected to the controller
      */
     @Override
@@ -1363,7 +1367,7 @@
         // Update event history
         evHistTopoSwitch(sw, EvAction.SWITCH_CONNECTED, "None");
         LinkUpdate update = new LinkUpdate(new LDUpdate(sw.getId(), null,
-                                       UpdateOperation.SWITCH_UPDATED));
+                UpdateOperation.SWITCH_UPDATED));
         controller.publishUpdate(update);
     }
 
@@ -1381,7 +1385,7 @@
             if (switchLinks.containsKey(sw)) {
                 if (log.isTraceEnabled()) {
                     log.trace("Handle switchRemoved. Switch {}; removing links {}",
-                              HexString.toHexString(sw), switchLinks.get(sw));
+                            HexString.toHexString(sw), switchLinks.get(sw));
                 }
                 // add all tuples with an endpoint on this switch to erase list
                 eraseList.addAll(switchLinks.get(sw));
@@ -1408,6 +1412,7 @@
 
     /**
      * Delete links incident on a given switch port.
+     *
      * @param npt
      * @param reason
      */
@@ -1417,9 +1422,9 @@
             if (log.isTraceEnabled()) {
                 log.trace("handlePortStatus: Switch {} port #{} " +
                         "removing links {}",
-                        new Object[] {HexString.toHexString(npt.getNodeId()),
-                                      npt.getPortId(),
-                                      this.portLinks.get(npt)});
+                        new Object[]{HexString.toHexString(npt.getNodeId()),
+                                npt.getPortId(),
+                                this.portLinks.get(npt)});
             }
             eraseList.addAll(this.portLinks.get(npt));
             deleteLinks(eraseList, reason);
@@ -1448,7 +1453,7 @@
                 // Timeout the unicast and multicast LLDP valid times
                 // independently.
                 if ((info.getUnicastValidTime() != null) &&
-                        (info.getUnicastValidTime() + (this.LINK_TIMEOUT * 1000) < curTime)){
+                        (info.getUnicastValidTime() + (this.LINK_TIMEOUT * 1000) < curTime)) {
                     info.setUnicastValidTime(null);
 
                     if (info.getMulticastValidTime() != null)
@@ -1457,8 +1462,8 @@
                     // the link would be deleted, which would trigger updateClusters().
                     linkChanged = true;
                 }
-                if ((info.getMulticastValidTime()!= null) &&
-                        (info.getMulticastValidTime()+ (this.LINK_TIMEOUT * 1000) < curTime)) {
+                if ((info.getMulticastValidTime() != null) &&
+                        (info.getMulticastValidTime() + (this.LINK_TIMEOUT * 1000) < curTime)) {
                     info.setMulticastValidTime(null);
                     // if uTime is not null, then link will remain as openflow
                     // link. If uTime is null, it will be deleted.  So, we
@@ -1469,16 +1474,16 @@
                 // Add to the erase list only if the unicast
                 // time is null.
                 if (info.getUnicastValidTime() == null &&
-                        info.getMulticastValidTime() == null){
+                        info.getMulticastValidTime() == null) {
                     eraseList.add(entry.getKey());
                 } else if (linkChanged) {
                     UpdateOperation operation;
                     operation = getUpdateOperation(info.getSrcPortState(),
-                                                   info.getDstPortState());
+                            info.getDstPortState());
                     LinkUpdate update = new LinkUpdate(new LDUpdate(lt.getSrc(), lt.getSrcPort(),
-                                             lt.getDst(), lt.getDstPort(),
-                                             getLinkType(lt, info),
-                                             operation));
+                            lt.getDst(), lt.getDstPort(),
+                            getLinkType(lt, info),
+                            operation));
                     controller.publishUpdate(update);
                 }
             }
@@ -1562,6 +1567,7 @@
 
     /**
      * Register a link discovery aware component
+     *
      * @param linkDiscoveryAwareComponent
      */
     public void addLinkDiscoveryAware(ILinkDiscoveryListener linkDiscoveryAwareComponent) {
@@ -1571,6 +1577,7 @@
 
     /**
      * Deregister a link discovery aware component
+     *
      * @param linkDiscoveryAwareComponent
      */
     public void removeLinkDiscoveryAware(ILinkDiscoveryListener linkDiscoveryAwareComponent) {
@@ -1603,9 +1610,9 @@
     public Map<Class<? extends IFloodlightService>, IFloodlightService>
     getServiceImpls() {
         Map<Class<? extends IFloodlightService>,
-        IFloodlightService> m =
-        new HashMap<Class<? extends IFloodlightService>,
-        IFloodlightService>();
+                IFloodlightService> m =
+                new HashMap<Class<? extends IFloodlightService>,
+                        IFloodlightService>();
         // We are the class that implements the service
         m.put(ILinkDiscoveryService.class, this);
         return m;
@@ -1659,27 +1666,27 @@
 
     @Override
     @LogMessageDocs({
-        @LogMessageDoc(level="ERROR",
-                message="No storage source found.",
-                explanation="Storage source was not initialized; cannot initialize " +
-                "link discovery.",
-                recommendation=LogMessageDoc.REPORT_CONTROLLER_BUG),
-        @LogMessageDoc(level="ERROR",
-                message="Error in installing listener for " +
-                        "switch config table {table}",
-                explanation="Failed to install storage notification for the " +
-                		"switch config table",
-                recommendation=LogMessageDoc.REPORT_CONTROLLER_BUG),
-        @LogMessageDoc(level="ERROR",
-                message="No storage source found.",
-                explanation="Storage source was not initialized; cannot initialize " +
-                "link discovery.",
-                recommendation=LogMessageDoc.REPORT_CONTROLLER_BUG),
-        @LogMessageDoc(level="ERROR",
-                message="Exception in LLDP send timer.",
-                explanation="An unknown error occured while sending LLDP " +
-                		"messages to switches.",
-                recommendation=LogMessageDoc.CHECK_SWITCH)
+            @LogMessageDoc(level = "ERROR",
+                    message = "No storage source found.",
+                    explanation = "Storage source was not initialized; cannot initialize " +
+                            "link discovery.",
+                    recommendation = LogMessageDoc.REPORT_CONTROLLER_BUG),
+            @LogMessageDoc(level = "ERROR",
+                    message = "Error in installing listener for " +
+                            "switch config table {table}",
+                    explanation = "Failed to install storage notification for the " +
+                            "switch config table",
+                    recommendation = LogMessageDoc.REPORT_CONTROLLER_BUG),
+            @LogMessageDoc(level = "ERROR",
+                    message = "No storage source found.",
+                    explanation = "Storage source was not initialized; cannot initialize " +
+                            "link discovery.",
+                    recommendation = LogMessageDoc.REPORT_CONTROLLER_BUG),
+            @LogMessageDoc(level = "ERROR",
+                    message = "Exception in LLDP send timer.",
+                    explanation = "An unknown error occured while sending LLDP " +
+                            "messages to switches.",
+                    recommendation = LogMessageDoc.CHECK_SWITCH)
     })
     public void startUp(FloodlightModuleContext context) {
         ScheduledExecutorService ses = threadPool.getScheduledExecutor();
@@ -1696,11 +1703,11 @@
                     log.error("Exception in LLDP send timer.", e);
                 } finally {
                     if (!shuttingDown) {
-                    	// Always reschedule link discovery if we're not
-                    	// shutting down (no chance of SLAVE role now)
+                        // Always reschedule link discovery if we're not
+                        // shutting down (no chance of SLAVE role now)
                         log.trace("Rescheduling discovery task");
                         discoveryTask.reschedule(DISCOVERY_TASK_INTERVAL,
-                        					TimeUnit.SECONDS);
+                                TimeUnit.SECONDS);
                     }
                 }
             }
@@ -1730,11 +1737,11 @@
     // ****************************************************
 
     // Topology Manager event history
-    public EventHistory<EventHistoryTopologySwitch>  evHistTopologySwitch;
-    public EventHistory<EventHistoryTopologyLink>    evHistTopologyLink;
+    public EventHistory<EventHistoryTopologySwitch> evHistTopologySwitch;
+    public EventHistory<EventHistoryTopologyLink> evHistTopologyLink;
     public EventHistory<EventHistoryTopologyCluster> evHistTopologyCluster;
-    public EventHistoryTopologySwitch  evTopoSwitch;
-    public EventHistoryTopologyLink    evTopoLink;
+    public EventHistoryTopologySwitch evTopoSwitch;
+    public EventHistoryTopologyLink evTopoLink;
     public EventHistoryTopologyCluster evTopoCluster;
 
     // Switch Added/Deleted
@@ -1742,21 +1749,21 @@
         if (evTopoSwitch == null) {
             evTopoSwitch = new EventHistoryTopologySwitch();
         }
-        evTopoSwitch.dpid     = sw.getId();
+        evTopoSwitch.dpid = sw.getId();
         if ((sw.getChannel() != null) &&
                 (SocketAddress.class.isInstance(
-                                                sw.getChannel().getRemoteAddress()))) {
+                        sw.getChannel().getRemoteAddress()))) {
             evTopoSwitch.ipv4Addr =
-                    IPv4.toIPv4Address(((InetSocketAddress)(sw.getChannel().
+                    IPv4.toIPv4Address(((InetSocketAddress) (sw.getChannel().
                             getRemoteAddress())).getAddress().getAddress());
-            evTopoSwitch.l4Port   =
-                    ((InetSocketAddress)(sw.getChannel().
+            evTopoSwitch.l4Port =
+                    ((InetSocketAddress) (sw.getChannel().
                             getRemoteAddress())).getPort();
         } else {
             evTopoSwitch.ipv4Addr = 0;
             evTopoSwitch.l4Port = 0;
         }
-        evTopoSwitch.reason   = reason;
+        evTopoSwitch.reason = reason;
         evTopoSwitch = evHistTopologySwitch.put(evTopoSwitch, actn);
     }
 
@@ -1773,7 +1780,7 @@
         evTopoLink.dstSwport = dstPort & 0xffff;
         evTopoLink.srcPortState = srcPortState;
         evTopoLink.dstPortState = dstPortState;
-        evTopoLink.reason    = reason;
+        evTopoLink.reason = reason;
         switch (linkType) {
             case DIRECT_LINK:
                 evTopoLink.linkType = "DIRECT_LINK";
@@ -1797,10 +1804,10 @@
         if (evTopoCluster == null) {
             evTopoCluster = new EventHistoryTopologyCluster();
         }
-        evTopoCluster.dpid         = dpid;
+        evTopoCluster.dpid = dpid;
         evTopoCluster.clusterIdOld = clusterIdOld;
         evTopoCluster.clusterIdNew = clusterIdNew;
-        evTopoCluster.reason       = reason;
+        evTopoCluster.reason = reason;
         evTopoCluster = evHistTopologyCluster.put(evTopoCluster, action);
     }
 
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/web/AutoPortFast.java b/src/main/java/net/onrc/onos/core/linkdiscovery/web/AutoPortFast.java
index 028776b..4b7eeca 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/web/AutoPortFast.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/web/AutoPortFast.java
@@ -14,10 +14,10 @@
     @Get("json")
     public String retrieve() {
         ILinkDiscoveryService linkDiscovery;
-        linkDiscovery = (ILinkDiscoveryService)getContext().getAttributes().
+        linkDiscovery = (ILinkDiscoveryService) getContext().getAttributes().
                 get(ILinkDiscoveryService.class.getCanonicalName());
 
-        String param = ((String)getRequestAttributes().get("state")).toLowerCase();
+        String param = ((String) getRequestAttributes().get("state")).toLowerCase();
         if (param.equals("enable") || param.equals("true")) {
             linkDiscovery.setAutoPortFastFeature(true);
         } else if (param.equals("disable") || param.equals("false")) {
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/web/LinkWithType.java b/src/main/java/net/onrc/onos/core/linkdiscovery/web/LinkWithType.java
index c956cb1..733f28c 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/web/LinkWithType.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/web/LinkWithType.java
@@ -15,9 +15,10 @@
 /**
  * This class is both the datastructure and the serializer
  * for a link with the corresponding type of link.
+ *
  * @author alexreimers
  */
-@JsonSerialize(using=LinkWithType.class)
+@JsonSerialize(using = LinkWithType.class)
 public class LinkWithType extends JsonSerializer<LinkWithType> {
     public long srcSwDpid;
     public short srcPort;
@@ -28,8 +29,9 @@
     public LinkType type;
 
     // Do NOT delete this, it's required for the serializer
-    public LinkWithType() {}
-    
+    public LinkWithType() {
+    }
+
     public LinkWithType(Link link,
                         int srcPortState,
                         int dstPortState,
@@ -43,23 +45,23 @@
         this.type = type;
     }
 
-	@Override
-	public void serialize(LinkWithType lwt, JsonGenerator jgen, SerializerProvider arg2) 
-			throws IOException, JsonProcessingException {
-		// You ****MUST*** use lwt for the fields as it's actually a different object.
-		jgen.writeStartObject();
-		jgen.writeStringField("src-switch", HexString.toHexString(lwt.srcSwDpid));
-		jgen.writeNumberField("src-port", lwt.srcPort);
-		jgen.writeNumberField("src-port-state", lwt.srcPortState);
-		jgen.writeStringField("dst-switch", HexString.toHexString(lwt.dstSwDpid));
-		jgen.writeNumberField("dst-port", lwt.dstPort);
-		jgen.writeNumberField("dst-port-state", lwt.dstPortState);
-		jgen.writeStringField("type", lwt.type.toString());
-		jgen.writeEndObject();
-	}
-	
-	@Override
-	public Class<LinkWithType> handledType() {
-		return LinkWithType.class;
-	}
+    @Override
+    public void serialize(LinkWithType lwt, JsonGenerator jgen, SerializerProvider arg2)
+            throws IOException, JsonProcessingException {
+        // You ****MUST*** use lwt for the fields as it's actually a different object.
+        jgen.writeStartObject();
+        jgen.writeStringField("src-switch", HexString.toHexString(lwt.srcSwDpid));
+        jgen.writeNumberField("src-port", lwt.srcPort);
+        jgen.writeNumberField("src-port-state", lwt.srcPortState);
+        jgen.writeStringField("dst-switch", HexString.toHexString(lwt.dstSwDpid));
+        jgen.writeNumberField("dst-port", lwt.dstPort);
+        jgen.writeNumberField("dst-port-state", lwt.dstPortState);
+        jgen.writeStringField("type", lwt.type.toString());
+        jgen.writeEndObject();
+    }
+
+    @Override
+    public Class<LinkWithType> handledType() {
+        return LinkWithType.class;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/net/onrc/onos/core/linkdiscovery/web/LinksResource.java b/src/main/java/net/onrc/onos/core/linkdiscovery/web/LinksResource.java
index 2714f66..81c0b9e 100644
--- a/src/main/java/net/onrc/onos/core/linkdiscovery/web/LinksResource.java
+++ b/src/main/java/net/onrc/onos/core/linkdiscovery/web/LinksResource.java
@@ -17,20 +17,20 @@
 
     @Get("json")
     public Set<LinkWithType> retrieve() {
-        ILinkDiscoveryService ld = (ILinkDiscoveryService)getContext().getAttributes().
+        ILinkDiscoveryService ld = (ILinkDiscoveryService) getContext().getAttributes().
                 get(ILinkDiscoveryService.class.getCanonicalName());
         Map<Link, LinkInfo> links = new HashMap<Link, LinkInfo>();
         Set<LinkWithType> returnLinkSet = new HashSet<LinkWithType>();
 
         if (ld != null) {
             links.putAll(ld.getLinks());
-            for(Entry<Link, LinkInfo> e : links.entrySet()) {
+            for (Entry<Link, LinkInfo> e : links.entrySet()) {
                 Link link = e.getKey();
                 LinkInfo info = e.getValue();
                 LinkWithType lwt = new LinkWithType(link,
-                                                    info.getSrcPortState(),
-                                                    info.getDstPortState(),
-                                                    ld.getLinkType(link, info));
+                        info.getSrcPortState(),
+                        info.getDstPortState(),
+                        ld.getLinkType(link, info));
                 returnLinkSet.add(lwt);
             }
         }
diff --git a/src/main/java/net/onrc/onos/core/main/IOFSwitchPortListener.java b/src/main/java/net/onrc/onos/core/main/IOFSwitchPortListener.java
index 7f4e139..6498844 100644
--- a/src/main/java/net/onrc/onos/core/main/IOFSwitchPortListener.java
+++ b/src/main/java/net/onrc/onos/core/main/IOFSwitchPortListener.java
@@ -1,5 +1,5 @@
 /**
- * 
+ *
  */
 package net.onrc.onos.core.main;
 
@@ -9,18 +9,17 @@
 
 /**
  * @author y-higuchi
- *
  */
 public interface IOFSwitchPortListener extends IOFSwitchListener {
 
-	/**
-	 * Fired when ports on a switch area added
-	 */
-	public void switchPortAdded(Long switchId, OFPhysicalPort port);
+    /**
+     * Fired when ports on a switch area added
+     */
+    public void switchPortAdded(Long switchId, OFPhysicalPort port);
 
-	/**
-	 * Fired when ports on a switch area removed
-	 */
-	public void switchPortRemoved(Long switchId, OFPhysicalPort port);
+    /**
+     * Fired when ports on a switch area removed
+     */
+    public void switchPortRemoved(Long switchId, OFPhysicalPort port);
 
 }
diff --git a/src/main/java/net/onrc/onos/core/main/IOnosRemoteSwitch.java b/src/main/java/net/onrc/onos/core/main/IOnosRemoteSwitch.java
index 0b95f42..1218555 100644
--- a/src/main/java/net/onrc/onos/core/main/IOnosRemoteSwitch.java
+++ b/src/main/java/net/onrc/onos/core/main/IOnosRemoteSwitch.java
@@ -1,5 +1,5 @@
 /**
- * 
+ *
  */
 package net.onrc.onos.core.main;
 
@@ -7,14 +7,14 @@
 
 /**
  * @author y-higuchi
- *
  */
 public interface IOnosRemoteSwitch extends IOFSwitch {
 
-	/**
-	 * Setup an unconnected switch with the info required.
-	 * @param dpid of the switch
-	 */
-	public void setupRemoteSwitch(Long dpid);
+    /**
+     * Setup an unconnected switch with the info required.
+     *
+     * @param dpid of the switch
+     */
+    public void setupRemoteSwitch(Long dpid);
 
 }
diff --git a/src/main/java/net/onrc/onos/core/main/Main.java b/src/main/java/net/onrc/onos/core/main/Main.java
index 4e3dd44..d8e5581 100644
--- a/src/main/java/net/onrc/onos/core/main/Main.java
+++ b/src/main/java/net/onrc/onos/core/main/Main.java
@@ -12,20 +12,22 @@
 
 /**
  * Host for the ONOS main method
+ *
  * @author alexreimers
  */
 public class Main {
 
     /**
      * Main method to load configuration and modules
+     *
      * @param args
-     * @throws FloodlightModuleException 
+     * @throws FloodlightModuleException
      */
     public static void main(String[] args) throws FloodlightModuleException {
         // Setup logger
-        System.setProperty("org.restlet.engine.loggerFacadeClass", 
+        System.setProperty("org.restlet.engine.loggerFacadeClass",
                 "org.restlet.ext.slf4j.Slf4jLoggerFacade");
-        
+
         CmdLineSettings settings = new CmdLineSettings();
         CmdLineParser parser = new CmdLineParser(settings);
         try {
@@ -34,7 +36,7 @@
             parser.printUsage(System.out);
             System.exit(1);
         }
-        
+
         // Load modules
         FloodlightModuleLoader fml = new FloodlightModuleLoader();
         IFloodlightModuleContext moduleContext = fml.loadModulesFromConfig(settings.getModuleFile());
diff --git a/src/main/java/net/onrc/onos/core/main/config/DefaultConfiguration.java b/src/main/java/net/onrc/onos/core/main/config/DefaultConfiguration.java
index 2feb69d..7f09e31 100644
--- a/src/main/java/net/onrc/onos/core/main/config/DefaultConfiguration.java
+++ b/src/main/java/net/onrc/onos/core/main/config/DefaultConfiguration.java
@@ -17,71 +17,71 @@
 
 public class DefaultConfiguration implements IConfigInfoService, IFloodlightModule {
 
-	@Override
-	public boolean isInterfaceAddress(InetAddress address) {
-		return false;
-	}
+    @Override
+    public boolean isInterfaceAddress(InetAddress address) {
+        return false;
+    }
 
-	@Override
-	public boolean inConnectedNetwork(InetAddress address) {
-		return false;
-	}
+    @Override
+    public boolean inConnectedNetwork(InetAddress address) {
+        return false;
+    }
 
-	@Override
-	public boolean fromExternalNetwork(long inDpid, short inPort) {
-		return false;
-	}
+    @Override
+    public boolean fromExternalNetwork(long inDpid, short inPort) {
+        return false;
+    }
 
-	@Override
-	public Interface getOutgoingInterface(InetAddress dstIpAddress) {
-		return null;
-	}
+    @Override
+    public Interface getOutgoingInterface(InetAddress dstIpAddress) {
+        return null;
+    }
 
-	@Override
-	public boolean hasLayer3Configuration() {
-		return false;
-	}
-	
-	@Override
-	public MACAddress getRouterMacAddress() {
-		return MACAddress.valueOf(HexString.fromHexString("000000000001"));
-	}
+    @Override
+    public boolean hasLayer3Configuration() {
+        return false;
+    }
 
-	@Override
-	public short getVlan() {
-		return 0;
-	}
+    @Override
+    public MACAddress getRouterMacAddress() {
+        return MACAddress.valueOf(HexString.fromHexString("000000000001"));
+    }
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-		Collection<Class<? extends IFloodlightService>> l 
-			= new ArrayList<Class<? extends IFloodlightService>>();
-		l.add(IConfigInfoService.class);
-		return l;
-	}
+    @Override
+    public short getVlan() {
+        return 0;
+    }
 
-	@Override
-	public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
-		Map<Class<? extends IFloodlightService>, IFloodlightService> m 
-			= new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
-		m.put(IConfigInfoService.class, this);
-		return m;
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleServices() {
+        Collection<Class<? extends IFloodlightService>> l
+                = new ArrayList<Class<? extends IFloodlightService>>();
+        l.add(IConfigInfoService.class);
+        return l;
+    }
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
-		return null;
-	}
+    @Override
+    public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
+        Map<Class<? extends IFloodlightService>, IFloodlightService> m
+                = new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
+        m.put(IConfigInfoService.class, this);
+        return m;
+    }
 
-	@Override
-	public void init(FloodlightModuleContext context)
-			throws FloodlightModuleException {
-		// no-op
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
+        return null;
+    }
 
-	@Override
-	public void startUp(FloodlightModuleContext context) {
-		// no-op
-	}
+    @Override
+    public void init(FloodlightModuleContext context)
+            throws FloodlightModuleException {
+        // no-op
+    }
+
+    @Override
+    public void startUp(FloodlightModuleContext context) {
+        // no-op
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/main/config/IConfigInfoService.java b/src/main/java/net/onrc/onos/core/main/config/IConfigInfoService.java
index 4ca8535..5c94626 100644
--- a/src/main/java/net/onrc/onos/core/main/config/IConfigInfoService.java
+++ b/src/main/java/net/onrc/onos/core/main/config/IConfigInfoService.java
@@ -9,40 +9,44 @@
 /**
  * Provides information about the layer 3 properties of the network.
  * This is based on IP addresses configured on ports in the network.
- *
  */
 public interface IConfigInfoService extends IFloodlightService {
-	public boolean isInterfaceAddress(InetAddress address);
-	public boolean inConnectedNetwork(InetAddress address);
-	public boolean fromExternalNetwork(long inDpid, short inPort);
-	
-	/**
-	 * Retrieves the {@link Interface} object for the interface that packets
-	 * to dstIpAddress will be sent out of. Returns null if dstIpAddress is not
-	 * in a directly connected network, or if no interfaces are configured.
-	 * @param dstIpAddress Destination IP address that we want to match to
-	 * an outgoing interface
-	 * @return The {@link Interface} object if found, null if not
-	 */
-	public Interface getOutgoingInterface(InetAddress dstIpAddress);
-	
-	/**
-	 * Returns whether this controller has a layer 3 configuration 
-	 * (i.e. interfaces and IP addresses)
-	 * @return True if IP addresses are configured, false if not
-	 */
-	public boolean hasLayer3Configuration();
-	
-	public MACAddress getRouterMacAddress();
-	
-	/**
-	* We currently have basic vlan support for the situation when the contr
-	* is running within a single vlan. In this case, packets sent from the 
-	* controller (e.g. ARP) need to be tagged with that vlan.
-	* @return The vlan id configured in the config file, 
-	* or 0 if no vlan is configured.
-	*/
-	public short getVlan();
+    public boolean isInterfaceAddress(InetAddress address);
+
+    public boolean inConnectedNetwork(InetAddress address);
+
+    public boolean fromExternalNetwork(long inDpid, short inPort);
+
+    /**
+     * Retrieves the {@link Interface} object for the interface that packets
+     * to dstIpAddress will be sent out of. Returns null if dstIpAddress is not
+     * in a directly connected network, or if no interfaces are configured.
+     *
+     * @param dstIpAddress Destination IP address that we want to match to
+     *                     an outgoing interface
+     * @return The {@link Interface} object if found, null if not
+     */
+    public Interface getOutgoingInterface(InetAddress dstIpAddress);
+
+    /**
+     * Returns whether this controller has a layer 3 configuration
+     * (i.e. interfaces and IP addresses)
+     *
+     * @return True if IP addresses are configured, false if not
+     */
+    public boolean hasLayer3Configuration();
+
+    public MACAddress getRouterMacAddress();
+
+    /**
+     * We currently have basic vlan support for the situation when the contr
+     * is running within a single vlan. In this case, packets sent from the
+     * controller (e.g. ARP) need to be tagged with that vlan.
+     *
+     * @return The vlan id configured in the config file,
+     * or 0 if no vlan is configured.
+     */
+    public short getVlan();
 
 
 }
diff --git a/src/main/java/net/onrc/onos/core/packet/ARP.java b/src/main/java/net/onrc/onos/core/packet/ARP.java
index a2e25c3..bc61c91 100644
--- a/src/main/java/net/onrc/onos/core/packet/ARP.java
+++ b/src/main/java/net/onrc/onos/core/packet/ARP.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
@@ -21,7 +21,6 @@
 import java.util.Arrays;
 
 /**
- *
  * @author David Erickson (daviderickson@cs.stanford.edu)
  */
 public class ARP extends BasePacket {
@@ -148,7 +147,7 @@
         this.senderProtocolAddress = senderProtocolAddress;
         return this;
     }
-    
+
     public ARP setSenderProtocolAddress(int address) {
         this.senderProtocolAddress = ByteBuffer.allocate(4).putInt(address).array();
         return this;
@@ -179,9 +178,9 @@
     /**
      * @return True if gratuitous ARP (SPA = TPA), false otherwise
      */
-    public boolean isGratuitous() {        
-        assert(senderProtocolAddress.length == targetProtocolAddress.length);
-        
+    public boolean isGratuitous() {
+        assert (senderProtocolAddress.length == targetProtocolAddress.length);
+
         int indx = 0;
         while (indx < senderProtocolAddress.length) {
             if (senderProtocolAddress[indx] != targetProtocolAddress[indx]) {
@@ -189,10 +188,10 @@
             }
             indx++;
         }
-        
+
         return true;
     }
-    
+
     /**
      * @param targetProtocolAddress the targetProtocolAddress to set
      */
@@ -200,7 +199,7 @@
         this.targetProtocolAddress = targetProtocolAddress;
         return this;
     }
-    
+
     public ARP setTargetProtocolAddress(int address) {
         this.targetProtocolAddress = ByteBuffer.allocate(4).putInt(address).array();
         return this;
diff --git a/src/main/java/net/onrc/onos/core/packet/BPDU.java b/src/main/java/net/onrc/onos/core/packet/BPDU.java
index 1dc7296..583eeff 100644
--- a/src/main/java/net/onrc/onos/core/packet/BPDU.java
+++ b/src/main/java/net/onrc/onos/core/packet/BPDU.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
@@ -22,6 +22,7 @@
 /**
  * This class is a Rapid Spanning Tree Protocol
  * Bridge Protocol Data Unit
+ *
  * @author alexreimers
  */
 public class BPDU extends BasePacket {
@@ -29,9 +30,9 @@
         CONFIG,
         TOPOLOGY_CHANGE;
     }
-    
+
     private final long destMac = 0x0180c2000000L; // 01-80-c2-00-00-00
-    
+
     // TODO - check this for RSTP
     private LLC llcHeader;
     private short protocolId = 0;
@@ -46,17 +47,17 @@
     private short maxAge; // 256ths of a second
     private short helloTime; // 256ths of a second
     private short forwardDelay; // 256ths of a second
-    
+
     public BPDU(BPDUType type) {
         rootBridgeId = new byte[8];
         senderBridgeId = new byte[8];
-        
+
         llcHeader = new LLC();
         llcHeader.setDsap((byte) 0x42);
         llcHeader.setSsap((byte) 0x42);
         llcHeader.setCtrl((byte) 0x03);
-        
-        switch(type) {
+
+        switch (type) {
             case CONFIG:
                 this.type = 0x0;
                 break;
@@ -68,19 +69,19 @@
                 break;
         }
     }
-    
+
     @Override
     public byte[] serialize() {
         byte[] data;
         // TODO check these
-        if (type == 0x0) { 
+        if (type == 0x0) {
             // config
             data = new byte[38];
         } else {
             // topology change
             data = new byte[7]; // LLC + TC notification
         }
-        
+
         ByteBuffer bb = ByteBuffer.wrap(data);
         // Serialize the LLC header
         byte[] llc = llcHeader.serialize();
@@ -88,7 +89,7 @@
         bb.putShort(protocolId);
         bb.put(version);
         bb.put(type);
-        
+
         if (type == 0x0) {
             bb.put(flags);
             bb.put(rootBridgeId, 0, rootBridgeId.length);
@@ -100,21 +101,21 @@
             bb.putShort(helloTime);
             bb.putShort(forwardDelay);
         }
-        
+
         return data;
     }
 
     @Override
     public IPacket deserialize(byte[] data, int offset, int length) {
         ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
-        
+
         // LLC header
         llcHeader.deserialize(data, offset, 3);
-        
+
         this.protocolId = bb.getShort();
         this.version = bb.get();
         this.type = bb.get();
-        
+
         // These fields only exist if it's a configuration BPDU
         if (this.type == 0x0) {
             this.flags = bb.get();
@@ -128,7 +129,7 @@
             this.forwardDelay = bb.getShort();
         }
         // TODO should we set other fields to 0?
-        
+
         return this;
     }
 
diff --git a/src/main/java/net/onrc/onos/core/packet/BSN.java b/src/main/java/net/onrc/onos/core/packet/BSN.java
index fead254..dedabd5 100644
--- a/src/main/java/net/onrc/onos/core/packet/BSN.java
+++ b/src/main/java/net/onrc/onos/core/packet/BSN.java
@@ -1,21 +1,21 @@
 /**
-*    Copyright 2012, Big Switch Networks, Inc. 
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2012, Big Switch Networks, Inc.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 /**
- * 
+ *
  */
 package net.onrc.onos.core.packet;
 
@@ -25,72 +25,71 @@
 
 /**
  * @author Shudong Zhou (shudong.zhou@bigswitch.com)
- *
  */
 public class BSN extends BasePacket {
-	public static final int BSN_MAGIC = 0x20000604;
-	public static final short BSN_VERSION_CURRENT = 0x0;
-	public static final short BSN_TYPE_PROBE = 0x1;
-	public static final short BSN_TYPE_BDDP  = 0x2;
-	public static Map<Short, Class<? extends IPacket>> typeClassMap;
-	
+    public static final int BSN_MAGIC = 0x20000604;
+    public static final short BSN_VERSION_CURRENT = 0x0;
+    public static final short BSN_TYPE_PROBE = 0x1;
+    public static final short BSN_TYPE_BDDP = 0x2;
+    public static Map<Short, Class<? extends IPacket>> typeClassMap;
+
     static {
         typeClassMap = new HashMap<Short, Class<? extends IPacket>>();
         typeClassMap.put(BSN_TYPE_PROBE, BSNPROBE.class);
         typeClassMap.put(BSN_TYPE_BDDP, LLDP.class);
     }
 
-	protected short type;
-	protected short version;
+    protected short type;
+    protected short version;
 
-	public BSN() {
-    	version = BSN_VERSION_CURRENT;
-	}
-	
+    public BSN() {
+        version = BSN_VERSION_CURRENT;
+    }
+
     public BSN(short type) {
-    	this.type = type;
-    	version = BSN_VERSION_CURRENT;
+        this.type = type;
+        version = BSN_VERSION_CURRENT;
     }
 
     public short getType() {
-		return type;
-	}
+        return type;
+    }
 
-	public BSN setType(short type) {
-		this.type = type;
-		return this;
-	}
-	
+    public BSN setType(short type) {
+        this.type = type;
+        return this;
+    }
+
     public short getVersion() {
-		return version;
-	}
+        return version;
+    }
 
-	public BSN setVersion(short version) {
-		this.version = version;
-		return this;
-	}
+    public BSN setVersion(short version) {
+        this.version = version;
+        return this;
+    }
 
     @Override
     public byte[] serialize() {
-    	short length = 4 /* magic */ + 2 /* type */ + 2 /* version */;
-    	
-    	byte[] payloadData = null;
-    	if (this.payload != null) {
+        short length = 4 /* magic */ + 2 /* type */ + 2 /* version */;
+
+        byte[] payloadData = null;
+        if (this.payload != null) {
             payload.setParent(this);
             payloadData = payload.serialize();
             length += payloadData.length;
         }
-    
+
         byte[] data = new byte[length];
         ByteBuffer bb = ByteBuffer.wrap(data);
         bb.putInt(BSN_MAGIC);
         bb.putShort(this.type);
         bb.putShort(this.version);
         if (payloadData != null)
-        	bb.put(payloadData);
+            bb.put(payloadData);
 
         if (this.parent != null && this.parent instanceof Ethernet)
-            ((Ethernet)this.parent).setEtherType(Ethernet.TYPE_BSN);
+            ((Ethernet) this.parent).setEtherType(Ethernet.TYPE_BSN);
 
         return data;
     }
@@ -98,20 +97,20 @@
     @Override
     public IPacket deserialize(byte[] data, int offset, int length) {
         ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
-        
+
         int magic = bb.getInt();
         if (magic != BSN_MAGIC) {
-        	throw new RuntimeException("Invalid BSN magic " + magic);
+            throw new RuntimeException("Invalid BSN magic " + magic);
         }
-        
+
         this.type = bb.getShort();
         this.version = bb.getShort();
         if (this.version != BSN_VERSION_CURRENT) {
-        	throw new RuntimeException(
-        			"Invalid BSN packet version " + this.version + ", should be "
-        	        + BSN_VERSION_CURRENT);
+            throw new RuntimeException(
+                    "Invalid BSN packet version " + this.version + ", should be "
+                            + BSN_VERSION_CURRENT);
         }
-        
+
         IPacket payload;
         if (typeClassMap.containsKey(this.type)) {
             Class<? extends IPacket> clazz = typeClassMap.get(this.type);
@@ -123,11 +122,11 @@
         } else {
             payload = new Data();
         }
-        
+
         this.payload = new Data();
         this.payload = payload.deserialize(data, bb.position(), bb.limit() - bb.position());
         this.payload.setParent(this);
-        
+
         return this;
     }
 
@@ -156,17 +155,17 @@
             return false;
         BSN other = (BSN) obj;
         return (type == other.type &&
-        		version == other.version);
+                version == other.version);
     }
-    
+
     public String toString() {
-    	StringBuffer sb = new StringBuffer("\n");
-    	sb.append("BSN packet");
+        StringBuffer sb = new StringBuffer("\n");
+        sb.append("BSN packet");
         if (typeClassMap.containsKey(this.type))
-        	sb.append(" type: " + typeClassMap.get(this.type).getCanonicalName());
+            sb.append(" type: " + typeClassMap.get(this.type).getCanonicalName());
         else
-        	sb.append(" type: " + this.type);
-        
-    	return sb.toString();
+            sb.append(" type: " + this.type);
+
+        return sb.toString();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/packet/BSNPROBE.java b/src/main/java/net/onrc/onos/core/packet/BSNPROBE.java
index 24dbe90..e411b7e 100644
--- a/src/main/java/net/onrc/onos/core/packet/BSNPROBE.java
+++ b/src/main/java/net/onrc/onos/core/packet/BSNPROBE.java
@@ -1,21 +1,21 @@
 /**
-*    Copyright 2012, Big Switch Networks, Inc. 
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2012, Big Switch Networks, Inc.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 /**
- * 
+ *
  */
 package net.onrc.onos.core.packet;
 
@@ -26,15 +26,14 @@
 
 /**
  * @author Shudong Zhou (shudong.zhou@bigswitch.com)
- *
  */
-public class BSNPROBE extends BasePacket {	
-	protected long controllerId;
-	protected int sequenceId;
-	protected byte[] srcMac;
-	protected byte[] dstMac;
-	protected long srcSwDpid;
-	protected int srcPortNo;
+public class BSNPROBE extends BasePacket {
+    protected long controllerId;
+    protected int sequenceId;
+    protected byte[] srcMac;
+    protected byte[] dstMac;
+    protected long srcSwDpid;
+    protected int srcPortNo;
 
     public BSNPROBE() {
         srcMac = new byte[6];
@@ -42,24 +41,24 @@
     }
 
 
-	public long getControllerId() {
-		return this.controllerId;
-	}
+    public long getControllerId() {
+        return this.controllerId;
+    }
 
-	public BSNPROBE setControllerId(long controllerId) {
-		this.controllerId = controllerId;
-		return this;
-	}
+    public BSNPROBE setControllerId(long controllerId) {
+        this.controllerId = controllerId;
+        return this;
+    }
 
-	public int getSequenceId() {
-		return sequenceId;
-	}
+    public int getSequenceId() {
+        return sequenceId;
+    }
 
-	public BSNPROBE setSequenceId(int sequenceId) {
-		this.sequenceId = sequenceId;
-		return this;
-	}
-	
+    public BSNPROBE setSequenceId(int sequenceId) {
+        this.sequenceId = sequenceId;
+        return this;
+    }
+
     public byte[] getSrcMac() {
         return this.srcMac;
     }
@@ -68,46 +67,46 @@
         this.srcMac = srcMac;
         return this;
     }
-    
-	public byte[] getDstMac() {
-		return dstMac;
-	}
 
-	public BSNPROBE setDstMac(byte[] dstMac) {
-		this.dstMac = dstMac;
-		return this;
-	}
+    public byte[] getDstMac() {
+        return dstMac;
+    }
 
-	public long getSrcSwDpid() {
-		return srcSwDpid;
-	}
+    public BSNPROBE setDstMac(byte[] dstMac) {
+        this.dstMac = dstMac;
+        return this;
+    }
 
-	public BSNPROBE setSrcSwDpid(long srcSwDpid) {
-		this.srcSwDpid = srcSwDpid;
-		return this;
-	}
+    public long getSrcSwDpid() {
+        return srcSwDpid;
+    }
 
-	public int getSrcPortNo() {
-		return srcPortNo;
-	}
+    public BSNPROBE setSrcSwDpid(long srcSwDpid) {
+        this.srcSwDpid = srcSwDpid;
+        return this;
+    }
 
-	public BSNPROBE setSrcPortNo(int srcPortNo) {
-		this.srcPortNo = srcPortNo;
-		return this;
-	}
+    public int getSrcPortNo() {
+        return srcPortNo;
+    }
+
+    public BSNPROBE setSrcPortNo(int srcPortNo) {
+        this.srcPortNo = srcPortNo;
+        return this;
+    }
 
     @Override
     public byte[] serialize() {
-    	short length = 8 /* controllerId */ + 4 /* seqId */
-    			+ 12 /* srcMac dstMac */ + 8 /* srcSwDpid */ + 4 /* srcPortNo */;
-    	
-    	byte[] payloadData = null;
-    	if (this.payload != null) {
+        short length = 8 /* controllerId */ + 4 /* seqId */
+                + 12 /* srcMac dstMac */ + 8 /* srcSwDpid */ + 4 /* srcPortNo */;
+
+        byte[] payloadData = null;
+        if (this.payload != null) {
             payload.setParent(this);
             payloadData = payload.serialize();
             length += payloadData.length;
         }
-    
+
         byte[] data = new byte[length];
         ByteBuffer bb = ByteBuffer.wrap(data);
         bb.putLong(this.controllerId);
@@ -117,10 +116,10 @@
         bb.putLong(this.srcSwDpid);
         bb.putInt(this.srcPortNo);
         if (payloadData != null)
-        	bb.put(payloadData);
+            bb.put(payloadData);
 
         if (this.parent != null && this.parent instanceof BSN)
-            ((BSN)this.parent).setType(BSN.BSN_TYPE_PROBE);
+            ((BSN) this.parent).setType(BSN.BSN_TYPE_PROBE);
 
         return data;
     }
@@ -128,20 +127,20 @@
     @Override
     public IPacket deserialize(byte[] data, int offset, int length) {
         ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
-        
+
         controllerId = bb.getLong();
         sequenceId = bb.getInt();
         bb.get(this.srcMac, 0, 6);
         bb.get(this.dstMac, 0, 6);
         this.srcSwDpid = bb.getLong();
         this.srcPortNo = bb.getInt();
-        
+
         if (bb.hasRemaining()) {
-        	this.payload = new Data();
-	        this.payload = payload.deserialize(data, bb.position(), bb.limit() - bb.position());
-	        this.payload.setParent(this);
+            this.payload = new Data();
+            this.payload = payload.deserialize(data, bb.position(), bb.limit() - bb.position());
+            this.payload.setParent(this);
         }
-        
+
         return this;
     }
 
@@ -174,25 +173,25 @@
         if (!Arrays.equals(srcMac, other.srcMac))
             return false;
         if (!Arrays.equals(dstMac, other.dstMac))
-        	return false;
+            return false;
         return (sequenceId == other.sequenceId &&
-        	    srcSwDpid == other.srcSwDpid &&
-        	    srcPortNo == other.srcPortNo
-        	    );
+                srcSwDpid == other.srcSwDpid &&
+                srcPortNo == other.srcPortNo
+        );
     }
-    
+
     public String toString() {
-    	StringBuffer sb = new StringBuffer("\n");
-    	sb.append("BSN Probe packet");
-    	sb.append("\nSource Mac: ");
-    	sb.append(HexString.toHexString(srcMac));
-    	sb.append("\nDestination Mac: ");
-    	sb.append(HexString.toHexString(dstMac));
-    	sb.append("\nSource Switch: ");
-    	sb.append(HexString.toHexString(srcSwDpid));
-    	sb.append(" port: " + srcPortNo);
-    	sb.append("\nSequence No.:" + sequenceId);
-    	
-    	return sb.toString();
+        StringBuffer sb = new StringBuffer("\n");
+        sb.append("BSN Probe packet");
+        sb.append("\nSource Mac: ");
+        sb.append(HexString.toHexString(srcMac));
+        sb.append("\nDestination Mac: ");
+        sb.append(HexString.toHexString(dstMac));
+        sb.append("\nSource Switch: ");
+        sb.append(HexString.toHexString(srcSwDpid));
+        sb.append(" port: " + srcPortNo);
+        sb.append("\nSequence No.:" + sequenceId);
+
+        return sb.toString();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/packet/BasePacket.java b/src/main/java/net/onrc/onos/core/packet/BasePacket.java
index d3b382b..4f4f478 100644
--- a/src/main/java/net/onrc/onos/core/packet/BasePacket.java
+++ b/src/main/java/net/onrc/onos/core/packet/BasePacket.java
@@ -1,27 +1,26 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
 
 /**
-*
-* @author David Erickson (daviderickson@cs.stanford.edu)
-*/
+ * @author David Erickson (daviderickson@cs.stanford.edu)
+ */
 public abstract class BasePacket implements IPacket {
     protected IPacket parent;
     protected IPacket payload;
@@ -59,7 +58,7 @@
         this.payload = payload;
         return this;
     }
-    
+
     @Override
     public void resetChecksum() {
         if (this.parent != null)
@@ -96,7 +95,7 @@
             return false;
         return true;
     }
-    
+
     @Override
     public Object clone() {
         IPacket pkt;
diff --git a/src/main/java/net/onrc/onos/core/packet/DHCP.java b/src/main/java/net/onrc/onos/core/packet/DHCP.java
index 16cc22f..ee3052b 100644
--- a/src/main/java/net/onrc/onos/core/packet/DHCP.java
+++ b/src/main/java/net/onrc/onos/core/packet/DHCP.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
@@ -24,7 +24,6 @@
 import java.util.ListIterator;
 
 /**
- *
  * @author David Erickson (daviderickson@cs.stanford.edu)
  */
 public class DHCP extends BasePacket {
@@ -52,7 +51,6 @@
      * ------------------------------------------
      * |            options (312)               |
      * ------------------------------------------
-     * 
      */
     // Header + magic without options
     public static int MIN_HEADER_LENGTH = 240;
@@ -60,30 +58,30 @@
     public static byte OPCODE_REPLY = 0x2;
 
     public static byte HWTYPE_ETHERNET = 0x1;
-    
+
     public enum DHCPOptionCode {
-        OptionCode_SubnetMask           ((byte)1),
-        OptionCode_RequestedIP          ((byte)50),
-        OptionCode_LeaseTime            ((byte)51),
-        OptionCode_MessageType          ((byte)53),
-        OptionCode_DHCPServerIp         ((byte)54),
-        OptionCode_RequestedParameters  ((byte)55),
-        OptionCode_RenewalTime          ((byte)58),
-        OPtionCode_RebindingTime        ((byte)59),
-        OptionCode_ClientID             ((byte)61),
-        OptionCode_END                  ((byte)255);
-    
+        OptionCode_SubnetMask((byte) 1),
+        OptionCode_RequestedIP((byte) 50),
+        OptionCode_LeaseTime((byte) 51),
+        OptionCode_MessageType((byte) 53),
+        OptionCode_DHCPServerIp((byte) 54),
+        OptionCode_RequestedParameters((byte) 55),
+        OptionCode_RenewalTime((byte) 58),
+        OPtionCode_RebindingTime((byte) 59),
+        OptionCode_ClientID((byte) 61),
+        OptionCode_END((byte) 255);
+
         protected byte value;
-        
+
         private DHCPOptionCode(byte value) {
             this.value = value;
         }
-        
+
         public byte getValue() {
             return value;
         }
     }
-    
+
     protected byte opCode;
     protected byte hardwareType;
     protected byte hardwareAddressLength;
@@ -279,9 +277,10 @@
         this.clientHardwareAddress = clientHardwareAddress;
         return this;
     }
-    
+
     /**
      * Gets a specific DHCP option parameter
+     *
      * @param opetionCode The option code to get
      * @return The value of the option if it exists, null otherwise
      */
@@ -322,7 +321,7 @@
         }
         return null;
     }
-    
+
     /**
      * @return the serverName
      */
@@ -364,14 +363,14 @@
             if (option.getCode() == 0 || option.getCode() == 255) {
                 optionsLength += 1;
             } else {
-                optionsLength += 2 + (int)(0xff & option.getLength());
+                optionsLength += 2 + (int) (0xff & option.getLength());
             }
         }
         int optionsPadLength = 0;
         if (optionsLength < 60)
             optionsPadLength = 60 - optionsLength;
 
-        byte[] data = new byte[240+optionsLength+optionsPadLength];
+        byte[] data = new byte[240 + optionsLength + optionsPadLength];
         ByteBuffer bb = ByteBuffer.wrap(data);
         bb.put(this.opCode);
         bb.put(this.hardwareType);
@@ -417,7 +416,7 @@
         } else {
             byte[] bytes = null;
             try {
-                 bytes = string.getBytes("ascii");
+                bytes = string.getBytes("ascii");
             } catch (UnsupportedEncodingException e) {
                 throw new RuntimeException("Failure encoding server name", e);
             }
@@ -438,7 +437,7 @@
         if (bb.remaining() < MIN_HEADER_LENGTH) {
             return this;
         }
-        
+
         this.opCode = bb.get();
         this.hardwareType = bb.get();
         this.hardwareAddressLength = bb.get();
@@ -483,13 +482,13 @@
                     } else {
                         // Skip the invalid option and set the END option
                         code = 0xff;
-                        option.setCode((byte)code);
+                        option.setCode((byte) code);
                         option.setLength((byte) 0);
                     }
                 } else {
                     // Skip the invalid option and set the END option
                     code = 0xff;
-                    option.setCode((byte)code);
+                    option.setCode((byte) code);
                     option.setLength((byte) 0);
                 }
             }
diff --git a/src/main/java/net/onrc/onos/core/packet/DHCPOption.java b/src/main/java/net/onrc/onos/core/packet/DHCPOption.java
index 4681e0b..7c56a34 100644
--- a/src/main/java/net/onrc/onos/core/packet/DHCPOption.java
+++ b/src/main/java/net/onrc/onos/core/packet/DHCPOption.java
@@ -1,26 +1,25 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
 import java.util.Arrays;
 
 /**
- *
  * @author David Erickson (daviderickson@cs.stanford.edu)
  */
 public class DHCPOption {
diff --git a/src/main/java/net/onrc/onos/core/packet/DHCPPacketType.java b/src/main/java/net/onrc/onos/core/packet/DHCPPacketType.java
index d68c22f..9d83c15 100644
--- a/src/main/java/net/onrc/onos/core/packet/DHCPPacketType.java
+++ b/src/main/java/net/onrc/onos/core/packet/DHCPPacketType.java
@@ -1,55 +1,55 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
 public enum DHCPPacketType {
     // From RFC 1533
-    DHCPDISCOVER        (1),
-    DHCPOFFER           (2),
-    DHCPREQUEST         (3),
-    DHCPDECLINE         (4),
-    DHCPACK             (5),
-    DHCPNAK             (6),
-    DHCPRELEASE         (7),
-    
+    DHCPDISCOVER(1),
+    DHCPOFFER(2),
+    DHCPREQUEST(3),
+    DHCPDECLINE(4),
+    DHCPACK(5),
+    DHCPNAK(6),
+    DHCPRELEASE(7),
+
     // From RFC2132
-    DHCPINFORM          (8),
-    
+    DHCPINFORM(8),
+
     // From RFC3203
-    DHCPFORCERENEW      (9),
-    
+    DHCPFORCERENEW(9),
+
     // From RFC4388
-    DHCPLEASEQUERY      (10),
-    DHCPLEASEUNASSIGNED (11),
-    DHCPLEASEUNKNOWN    (12),
-    DHCPLEASEACTIVE     (13);
-    
+    DHCPLEASEQUERY(10),
+    DHCPLEASEUNASSIGNED(11),
+    DHCPLEASEUNKNOWN(12),
+    DHCPLEASEACTIVE(13);
+
     protected int value;
-    
+
     private DHCPPacketType(int value) {
         this.value = value;
     }
-    
+
     public int getValue() {
         return value;
     }
-    
-    public String toString(){
+
+    public String toString() {
         switch (value) {
             case 1:
                 return "DHCPDISCOVER";
@@ -78,9 +78,10 @@
             case 13:
                 return "DHCPLEASEACTIVE";
         }
-        
+
         return null;
     }
+
     public static DHCPPacketType getType(int value) {
         switch (value) {
             case 1:
@@ -110,7 +111,7 @@
             case 13:
                 return DHCPLEASEACTIVE;
         }
-        
+
         return null;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/packet/Data.java b/src/main/java/net/onrc/onos/core/packet/Data.java
index e8617ad..f6f9138 100644
--- a/src/main/java/net/onrc/onos/core/packet/Data.java
+++ b/src/main/java/net/onrc/onos/core/packet/Data.java
@@ -1,33 +1,32 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
 import java.util.Arrays;
 
 /**
- *
  * @author David Erickson (daviderickson@cs.stanford.edu)
  */
 public class Data extends BasePacket {
     protected byte[] data;
 
     /**
-     * 
+     *
      */
     public Data() {
     }
diff --git a/src/main/java/net/onrc/onos/core/packet/Ethernet.java b/src/main/java/net/onrc/onos/core/packet/Ethernet.java
index 794b3b7..8a4b0fb 100644
--- a/src/main/java/net/onrc/onos/core/packet/Ethernet.java
+++ b/src/main/java/net/onrc/onos/core/packet/Ethernet.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
@@ -27,7 +27,6 @@
 import org.openflow.util.HexString;
 
 /**
- *
  * @author David Erickson (daviderickson@cs.stanford.edu)
  */
 public class Ethernet extends BasePacket {
@@ -37,7 +36,7 @@
     public static final short TYPE_IPv4 = 0x0800;
     public static final short TYPE_LLDP = (short) 0x88cc;
     public static final short TYPE_BSN = (short) 0x8942;
-    public static final short VLAN_UNTAGGED = (short)0xffff;
+    public static final short VLAN_UNTAGGED = (short) 0xffff;
     public static final short DATALAYER_ADDRESS_LENGTH = 6; // bytes
     public static Map<Short, Class<? extends IPacket>> etherTypeClassMap;
 
@@ -64,14 +63,14 @@
         super();
         this.vlanID = VLAN_UNTAGGED;
     }
-    
+
     /**
      * @return the destination MAC as a byte array
      */
     public byte[] getDestinationMACAddress() {
         return destinationMACAddress.toBytes();
     }
-    
+
     /**
      * @return the destination MAC
      */
@@ -101,7 +100,7 @@
     public byte[] getSourceMACAddress() {
         return sourceMACAddress.toBytes();
     }
-    
+
     /**
      * @return the source MACAddress
      */
@@ -169,23 +168,25 @@
         this.etherType = etherType;
         return this;
     }
-    
+
     /**
      * @return True if the Ethernet frame is broadcast, false otherwise
      */
     public boolean isBroadcast() {
-        assert(destinationMACAddress.length() == 6);
+        assert (destinationMACAddress.length() == 6);
         return destinationMACAddress.isBroadcast();
     }
-    
+
     /**
      * @return True is the Ethernet frame is multicast, False otherwise
      */
     public boolean isMulticast() {
         return destinationMACAddress.isMulticast();
     }
+
     /**
      * Pad this packet to 60 bytes minimum, filling with zeros?
+     *
      * @return the pad
      */
     public boolean isPad() {
@@ -194,6 +195,7 @@
 
     /**
      * Pad this packet to 60 bytes minimum, filling with zeros?
+     *
      * @param pad the pad to set
      */
     public Ethernet setPad(boolean pad) {
@@ -208,7 +210,7 @@
             payloadData = payload.serialize();
         }
         int length = 14 + ((vlanID == VLAN_UNTAGGED) ? 0 : 4) +
-                          ((payloadData == null) ? 0 : payloadData.length);
+                ((payloadData == null) ? 0 : payloadData.length);
         if (pad && length < 60) {
             length = 60;
         }
@@ -224,7 +226,7 @@
         if (payloadData != null)
             bb.put(payloadData);
         if (pad) {
-            Arrays.fill(data, bb.position(), data.length, (byte)0x0);
+            Arrays.fill(data, bb.position(), data.length, (byte) 0x0);
         }
         return data;
     }
@@ -256,7 +258,7 @@
             this.vlanID = VLAN_UNTAGGED;
         }
         this.etherType = etherType;
-        
+
         IPacket payload;
         if (Ethernet.etherTypeClassMap.containsKey(this.etherType)) {
             Class<? extends IPacket> clazz = Ethernet.etherTypeClassMap.get(this.etherType);
@@ -268,13 +270,14 @@
         } else {
             payload = new Data();
         }
-        this.payload = payload.deserialize(data, bb.position(), bb.limit()-bb.position());
+        this.payload = payload.deserialize(data, bb.position(), bb.limit() - bb.position());
         this.payload.setParent(this);
         return this;
     }
 
     /**
      * Checks to see if a string is a valid MAC address.
+     *
      * @param macAddress
      * @return True if macAddress is a valid MAC, False otherwise
      */
@@ -283,8 +286,8 @@
         if (macBytes.length != 6)
             return false;
         for (int i = 0; i < 6; ++i) {
-            if (HEXES.indexOf(macBytes[i].toUpperCase().charAt(0)) == -1 || 
-                HEXES.indexOf(macBytes[i].toUpperCase().charAt(1)) == -1) {
+            if (HEXES.indexOf(macBytes[i].toUpperCase().charAt(0)) == -1 ||
+                    HEXES.indexOf(macBytes[i].toUpperCase().charAt(1)) == -1) {
                 return false;
             }
         }
@@ -294,8 +297,9 @@
     /**
      * Accepts a MAC address of the form 00:aa:11:bb:22:cc, case does not
      * matter, and returns a corresponding byte[].
+     *
      * @param macAddress The MAC address to convert into a bye array
-     * @return The macAddress as a byte array 
+     * @return The macAddress as a byte array
      */
     public static byte[] toMACAddress(String macAddress) {
         return MACAddress.valueOf(macAddress).toBytes();
@@ -305,6 +309,7 @@
     /**
      * Accepts a MAC address and returns the corresponding long, where the
      * MAC bytes are set on the lower order bytes of the long.
+     *
      * @param macAddress
      * @return a long containing the mac address bytes
      */
@@ -314,13 +319,14 @@
 
     /**
      * Convert a long MAC address to a byte array
+     *
      * @param macAddress
      * @return the bytes of the mac address
      */
     public static byte[] toByteArray(long macAddress) {
         return MACAddress.valueOf(macAddress).toBytes();
     }
-    
+
     /* (non-Javadoc)
      * @see java.lang.Object#hashCode()
      */
@@ -363,7 +369,7 @@
             return false;
         return true;
     }
-    
+
     /* (non-Javadoc)
      * @see java.lang.Object#toString(java.lang.Object)
      */
@@ -384,7 +390,7 @@
             sb.append("ip");
         else if (pkt instanceof DHCP)
             sb.append("dhcp");
-        else  sb.append(this.getEtherType());
+        else sb.append(this.getEtherType());
 
         sb.append("\ndl_vlan: ");
         if (this.getVlanID() == Ethernet.VLAN_UNTAGGED)
@@ -405,18 +411,15 @@
             sb.append(IPv4.fromIPv4Address(IPv4.toIPv4Address(p.getSenderProtocolAddress())));
             sb.append("\nnw_dst: ");
             sb.append(IPv4.fromIPv4Address(IPv4.toIPv4Address(p.getTargetProtocolAddress())));
-        }
-        else if (pkt instanceof LLDP) {
+        } else if (pkt instanceof LLDP) {
             sb.append("lldp packet");
-        }
-        else if (pkt instanceof ICMP) {
+        } else if (pkt instanceof ICMP) {
             ICMP icmp = (ICMP) pkt;
             sb.append("\nicmp_type: ");
             sb.append(icmp.getIcmpType());
             sb.append("\nicmp_code: ");
             sb.append(icmp.getIcmpCode());
-        }
-        else if (pkt instanceof IPv4) {
+        } else if (pkt instanceof IPv4) {
             IPv4 p = (IPv4) pkt;
             sb.append("\nnw_src: ");
             sb.append(IPv4.fromIPv4Address(p.getSourceAddress()));
@@ -448,20 +451,15 @@
                 sb.append(icmp.getIcmpCode());
             }
 
-        }
-        else if (pkt instanceof DHCP) {
+        } else if (pkt instanceof DHCP) {
             sb.append("\ndhcp packet");
-        }
-        else if (pkt instanceof Data) {
+        } else if (pkt instanceof Data) {
             sb.append("\ndata packet");
-        }
-        else if (pkt instanceof LLC) {
+        } else if (pkt instanceof LLC) {
             sb.append("\nllc packet");
-        }
-        else if (pkt instanceof BPDU) {
+        } else if (pkt instanceof BPDU) {
             sb.append("\nbpdu packet");
-        }
-        else sb.append("\nunknwon packet");
+        } else sb.append("\nunknwon packet");
 
         return sb.toString();
     }
diff --git a/src/main/java/net/onrc/onos/core/packet/ICMP.java b/src/main/java/net/onrc/onos/core/packet/ICMP.java
index b575878..4b80c94 100644
--- a/src/main/java/net/onrc/onos/core/packet/ICMP.java
+++ b/src/main/java/net/onrc/onos/core/packet/ICMP.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
@@ -21,6 +21,7 @@
 
 /**
  * Implements ICMP packet format
+ *
  * @author shudong.zhou@bigswitch.com
  */
 public class ICMP extends BasePacket {
@@ -76,8 +77,8 @@
     /**
      * Serializes the packet. Will compute and set the following fields if they
      * are set to specific values at the time serialize is called:
-     *      -checksum : 0
-     *      -length : 0
+     * -checksum : 0
+     * -length : 0
      */
     public byte[] serialize() {
         int length = 4;
@@ -98,7 +99,7 @@
             bb.put(payloadData);
 
         if (this.parent != null && this.parent instanceof IPv4)
-            ((IPv4)this.parent).setProtocol(IPv4.PROTOCOL_ICMP);
+            ((IPv4) this.parent).setProtocol(IPv4.PROTOCOL_ICMP);
 
         // compute checksum if needed
         if (this.checksum == 0) {
@@ -161,9 +162,9 @@
         this.icmpType = bb.get();
         this.icmpCode = bb.get();
         this.checksum = bb.getShort();
-        
+
         this.payload = new Data();
-        this.payload = payload.deserialize(data, bb.position(), bb.limit()-bb.position());
+        this.payload = payload.deserialize(data, bb.position(), bb.limit() - bb.position());
         this.payload.setParent(this);
         return this;
     }
diff --git a/src/main/java/net/onrc/onos/core/packet/IPacket.java b/src/main/java/net/onrc/onos/core/packet/IPacket.java
index 0cfc51f..8f31960 100644
--- a/src/main/java/net/onrc/onos/core/packet/IPacket.java
+++ b/src/main/java/net/onrc/onos/core/packet/IPacket.java
@@ -1,48 +1,43 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
 /**
-*
-* @author David Erickson (daviderickson@cs.stanford.edu)
-*/
+ * @author David Erickson (daviderickson@cs.stanford.edu)
+ */
 public interface IPacket {
     /**
-     * 
      * @return
      */
     public IPacket getPayload();
 
     /**
-     * 
      * @param packet
      * @return
      */
     public IPacket setPayload(IPacket packet);
 
     /**
-     * 
      * @return
      */
     public IPacket getParent();
 
     /**
-     * 
      * @param packet
      * @return
      */
@@ -52,25 +47,28 @@
      * Reset any checksums as needed, and call resetChecksum on all parents
      */
     public void resetChecksum();
-    
+
     /**
-     * Sets all payloads parent packet if applicable, then serializes this 
+     * Sets all payloads parent packet if applicable, then serializes this
      * packet and all payloads
+     *
      * @return a byte[] containing this packet and payloads
      */
     public byte[] serialize();
 
     /**
      * Deserializes this packet layer and all possible payloads
+     *
      * @param data
      * @param offset offset to start deserializing from
      * @param length length of the data to deserialize
      * @return the deserialized data
      */
     public IPacket deserialize(byte[] data, int offset, int length);
-    
-    /** Clone this packet and its payload packet but not its parent. 
-     * 
+
+    /**
+     * Clone this packet and its payload packet but not its parent.
+     *
      * @return
      */
     public Object clone();
diff --git a/src/main/java/net/onrc/onos/core/packet/IPv4.java b/src/main/java/net/onrc/onos/core/packet/IPv4.java
index 7f9db1a..1195c7c 100644
--- a/src/main/java/net/onrc/onos/core/packet/IPv4.java
+++ b/src/main/java/net/onrc/onos/core/packet/IPv4.java
@@ -1,22 +1,22 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 /**
- * 
+ *
  */
 package net.onrc.onos.core.packet;
 
@@ -28,10 +28,9 @@
 
 /**
  * @author David Erickson (daviderickson@cs.stanford.edu)
- *
  */
 public class IPv4 extends BasePacket {
-	public static final int ADDRESS_LENGTH = 4;
+    public static final int ADDRESS_LENGTH = 4;
     public static final byte PROTOCOL_ICMP = 0x1;
     public static final byte PROTOCOL_TCP = 0x6;
     public static final byte PROTOCOL_UDP = 0x11;
@@ -210,6 +209,7 @@
         this.checksum = checksum;
         return this;
     }
+
     @Override
     public void resetChecksum() {
         this.checksum = 0;
@@ -283,9 +283,9 @@
     /**
      * Serializes the packet. Will compute and set the following fields if they
      * are set to specific values at the time serialize is called:
-     *      -checksum : 0
-     *      -headerLength : 0
-     *      -totalLength : 0
+     * -checksum : 0
+     * -headerLength : 0
+     * -totalLength : 0
      */
     public byte[] serialize() {
         byte[] payloadData = null;
@@ -372,7 +372,7 @@
         } else {
             payload = new Data();
         }
-        this.payload = payload.deserialize(data, bb.position(), bb.limit()-bb.position());
+        this.payload = payload.deserialize(data, bb.position(), bb.limit() - bb.position());
         this.payload.setParent(this);
 
         if (this.totalLength != length)
@@ -386,21 +386,22 @@
     /**
      * Accepts an IPv4 address of the form xxx.xxx.xxx.xxx, ie 192.168.0.1 and
      * returns the corresponding 32 bit integer.
+     *
      * @param ipAddress
      * @return
      */
     public static int toIPv4Address(String ipAddress) {
         if (ipAddress == null)
             throw new IllegalArgumentException("Specified IPv4 address must" +
-                "contain 4 sets of numerical digits separated by periods");
+                    "contain 4 sets of numerical digits separated by periods");
         String[] octets = ipAddress.split("\\.");
-        if (octets.length != 4) 
+        if (octets.length != 4)
             throw new IllegalArgumentException("Specified IPv4 address must" +
-                "contain 4 sets of numerical digits separated by periods");
+                    "contain 4 sets of numerical digits separated by periods");
 
         int result = 0;
         for (int i = 0; i < 4; ++i) {
-            result |= Integer.valueOf(octets[i]) << ((3-i)*8);
+            result |= Integer.valueOf(octets[i]) << ((3 - i) * 8);
         }
         return result;
     }
@@ -408,14 +409,15 @@
     /**
      * Accepts an IPv4 address in a byte array and returns the corresponding
      * 32-bit integer value.
+     *
      * @param ipAddress
      * @return
      */
     public static int toIPv4Address(byte[] ipAddress) {
         int ip = 0;
         for (int i = 0; i < 4; i++) {
-          int t = (ipAddress[i] & 0xff) << ((3-i)*8);
-          ip |= t;
+            int t = (ipAddress[i] & 0xff) << ((3 - i) * 8);
+            ip |= t;
         }
         return ip;
     }
@@ -423,7 +425,7 @@
     /**
      * Accepts an IPv4 address and returns of string of the form xxx.xxx.xxx.xxx
      * ie 192.168.0.1
-     * 
+     *
      * @param ipAddress
      * @return
      */
@@ -431,7 +433,7 @@
         StringBuffer sb = new StringBuffer();
         int result = 0;
         for (int i = 0; i < 4; ++i) {
-            result = (ipAddress >> ((3-i)*8)) & 0xff;
+            result = (ipAddress >> ((3 - i) * 8)) & 0xff;
             sb.append(Integer.valueOf(result).toString());
             if (i != 3)
                 sb.append(".");
@@ -443,7 +445,7 @@
      * Accepts a collection of IPv4 addresses as integers and returns a single
      * String useful in toString method's containing collections of IP
      * addresses.
-     * 
+     *
      * @param ipAddresses collection
      * @return
      */
@@ -456,21 +458,22 @@
             sb.append(fromIPv4Address(ip));
             sb.append(",");
         }
-        sb.replace(sb.length()-1, sb.length(), "]");
+        sb.replace(sb.length() - 1, sb.length(), "]");
         return sb.toString();
     }
 
     /**
      * Accepts an IPv4 address of the form xxx.xxx.xxx.xxx, ie 192.168.0.1 and
      * returns the corresponding byte array.
+     *
      * @param ipAddress The IP address in the form xx.xxx.xxx.xxx.
      * @return The IP address separated into bytes
      */
     public static byte[] toIPv4AddressBytes(String ipAddress) {
         String[] octets = ipAddress.split("\\.");
-        if (octets.length != 4) 
+        if (octets.length != 4)
             throw new IllegalArgumentException("Specified IPv4 address must" +
-                "contain 4 sets of numerical digits separated by periods");
+                    "contain 4 sets of numerical digits separated by periods");
 
         byte[] result = new byte[4];
         for (int i = 0; i < 4; ++i) {
@@ -478,19 +481,20 @@
         }
         return result;
     }
-    
+
     /**
      * Accepts an IPv4 address in the form of an integer and
      * returns the corresponding byte array.
+     *
      * @param ipAddress The IP address as an integer.
      * @return The IP address separated into bytes.
      */
     public static byte[] toIPv4AddressBytes(int ipAddress) {
-    	return new byte[] {
-                (byte)(ipAddress >>> 24),
-                (byte)(ipAddress >>> 16),
-                (byte)(ipAddress >>> 8),
-                (byte)ipAddress};
+        return new byte[]{
+                (byte) (ipAddress >>> 24),
+                (byte) (ipAddress >>> 16),
+                (byte) (ipAddress >>> 8),
+                (byte) ipAddress};
     }
 
     /* (non-Javadoc)
diff --git a/src/main/java/net/onrc/onos/core/packet/LLC.java b/src/main/java/net/onrc/onos/core/packet/LLC.java
index c4f0c27..d809f12 100644
--- a/src/main/java/net/onrc/onos/core/packet/LLC.java
+++ b/src/main/java/net/onrc/onos/core/packet/LLC.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
@@ -22,14 +22,14 @@
 /**
  * This class represents an Link Local Control
  * header that is used in Ethernet 802.3.
- * @author alexreimers
  *
+ * @author alexreimers
  */
 public class LLC extends BasePacket {
     private byte dsap = 0;
     private byte ssap = 0;
     private byte ctrl = 0;
-    
+
     public byte getDsap() {
         return dsap;
     }
diff --git a/src/main/java/net/onrc/onos/core/packet/LLDP.java b/src/main/java/net/onrc/onos/core/packet/LLDP.java
index 307a052..0b0f9ec 100644
--- a/src/main/java/net/onrc/onos/core/packet/LLDP.java
+++ b/src/main/java/net/onrc/onos/core/packet/LLDP.java
@@ -1,22 +1,22 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 /**
- * 
+ *
  */
 package net.onrc.onos.core.packet;
 
@@ -26,7 +26,6 @@
 
 /**
  * @author David Erickson (daviderickson@cs.stanford.edu)
- *
  */
 public class LLDP extends BasePacket {
     protected LLDPTLV chassisId;
@@ -102,8 +101,8 @@
 
     @Override
     public byte[] serialize() {
-        int length = 2+this.chassisId.getLength() + 2+this.portId.getLength() +
-            2+this.ttl.getLength() + 2;
+        int length = 2 + this.chassisId.getLength() + 2 + this.portId.getLength() +
+                2 + this.ttl.getLength() + 2;
         for (LLDPTLV tlv : this.optionalTLVList) {
             length += 2 + tlv.getLength();
         }
@@ -119,7 +118,7 @@
         bb.putShort((short) 0); // End of LLDPDU
 
         if (this.parent != null && this.parent instanceof Ethernet)
-            ((Ethernet)this.parent).setEtherType(ethType);
+            ((Ethernet) this.parent).setEtherType(ethType);
 
         return data;
     }
diff --git a/src/main/java/net/onrc/onos/core/packet/LLDPOrganizationalTLV.java b/src/main/java/net/onrc/onos/core/packet/LLDPOrganizationalTLV.java
index f3cd655..beae222 100644
--- a/src/main/java/net/onrc/onos/core/packet/LLDPOrganizationalTLV.java
+++ b/src/main/java/net/onrc/onos/core/packet/LLDPOrganizationalTLV.java
@@ -39,13 +39,14 @@
 
     /**
      * Set the value of OUI.
+     *
      * @param oui The value of OUI to be set.
      * @return This LLDP Organizationally Specific TLV.
      */
     public LLDPOrganizationalTLV setOUI(byte[] oui) {
         if (oui.length != OUI_LENGTH) {
             throw new IllegalArgumentException("The length of OUI must be " + OUI_LENGTH +
-                ", but it is " + oui.length);
+                    ", but it is " + oui.length);
         }
         this.oui = Arrays.copyOf(oui, oui.length);
         return this;
@@ -53,6 +54,7 @@
 
     /**
      * Returns the value of the OUI.
+     *
      * @return The value of the OUI .
      */
     public byte[] getOUI() {
@@ -61,6 +63,7 @@
 
     /**
      * Set the value of sub type.
+     *
      * @param subType The value of sub type to be set.
      * @return This LLDP Organizationally Specific TLV.
      */
@@ -71,6 +74,7 @@
 
     /**
      * Returns the value of the sub type.
+     *
      * @return The value of the sub type.
      */
     public byte getSubType() {
@@ -79,6 +83,7 @@
 
     /**
      * Set the value of information string.
+     *
      * @param infoString the byte array of the value of information string.
      * @return This LLDP Organizationally Specific TLV.
      */
@@ -93,6 +98,7 @@
     /**
      * Set the value of information string.
      * The String value is automatically converted into byte array with UTF-8 encoding.
+     *
      * @param infoString the String value of information string.
      * @return This LLDP Organizationally Specific TLV.
      */
@@ -103,6 +109,7 @@
 
     /**
      * Returns the value of information string.
+     *
      * @return the value of information string.
      */
     public byte[] getInfoString() {
@@ -159,7 +166,7 @@
             return false;
         }
 
-        LLDPOrganizationalTLV other = (LLDPOrganizationalTLV)o;
+        LLDPOrganizationalTLV other = (LLDPOrganizationalTLV) o;
         if (this.type != other.type) {
             return false;
         }
diff --git a/src/main/java/net/onrc/onos/core/packet/LLDPTLV.java b/src/main/java/net/onrc/onos/core/packet/LLDPTLV.java
index d7bcc68..7b852e2 100644
--- a/src/main/java/net/onrc/onos/core/packet/LLDPTLV.java
+++ b/src/main/java/net/onrc/onos/core/packet/LLDPTLV.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
@@ -21,8 +21,6 @@
 import java.util.Arrays;
 
 /**
- *
- *
  * @author David Erickson (daviderickson@cs.stanford.edu)
  */
 public class LLDPTLV {
@@ -80,7 +78,7 @@
         // info string length 9 bits, each value == byte
         // info string
         short scratch = (short) (((0x7f & this.type) << 9) | (0x1ff & this.length));
-        byte[] data = new byte[2+this.length];
+        byte[] data = new byte[2 + this.length];
         ByteBuffer bb = ByteBuffer.wrap(data);
         bb.putShort(scratch);
         if (this.value != null)
diff --git a/src/main/java/net/onrc/onos/core/packet/TCP.java b/src/main/java/net/onrc/onos/core/packet/TCP.java
index 7eb78bd..ec74f46 100644
--- a/src/main/java/net/onrc/onos/core/packet/TCP.java
+++ b/src/main/java/net/onrc/onos/core/packet/TCP.java
@@ -1,26 +1,25 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
 import java.nio.ByteBuffer;
 
 /**
- *
  * @author shudong.zhou@bigswitch.com
  */
 public class TCP extends BasePacket {
@@ -71,71 +70,86 @@
     public short getChecksum() {
         return checksum;
     }
-    
+
     public int getSequence() {
         return this.sequence;
     }
+
     public TCP setSequence(int seq) {
         this.sequence = seq;
         return this;
     }
+
     public int getAcknowledge() {
         return this.acknowledge;
     }
+
     public TCP setAcknowledge(int ack) {
         this.acknowledge = ack;
         return this;
     }
+
     public byte getDataOffset() {
         return this.dataOffset;
     }
+
     public TCP setDataOffset(byte offset) {
         this.dataOffset = offset;
         return this;
     }
+
     public short getFlags() {
         return this.flags;
     }
+
     public TCP setFlags(short flags) {
         this.flags = flags;
         return this;
     }
+
     public short getWindowSize() {
         return this.windowSize;
     }
+
     public TCP setWindowSize(short windowSize) {
         this.windowSize = windowSize;
         return this;
     }
+
     public short getTcpChecksum() {
         return this.checksum;
     }
+
     public TCP setTcpChecksum(short checksum) {
         this.checksum = checksum;
         return this;
     }
-    
+
     @Override
     public void resetChecksum() {
         this.checksum = 0;
         super.resetChecksum();
     }
-    
+
     public short getUrgentPointer(short urgentPointer) {
         return this.urgentPointer;
     }
+
     public TCP setUrgentPointer(short urgentPointer) {
-        this.urgentPointer= urgentPointer;
+        this.urgentPointer = urgentPointer;
         return this;
     }
+
     public byte[] getOptions() {
         return this.options;
     }
+
     public TCP setOptions(byte[] options) {
         this.options = options;
         this.dataOffset = (byte) ((20 + options.length + 3) >> 2);
         return this;
     }
+
     /**
      * @param checksum the checksum to set
      */
@@ -147,8 +161,8 @@
     /**
      * Serializes the packet. Will compute and set the following fields if they
      * are set to specific values at the time serialize is called:
-     *      -checksum : 0
-     *      -length : 0
+     * -checksum : 0
+     * -length : 0
      */
     public byte[] serialize() {
         int length;
@@ -184,7 +198,7 @@
             bb.put(payloadData);
 
         if (this.parent != null && this.parent instanceof IPv4)
-            ((IPv4)this.parent).setProtocol(IPv4.PROTOCOL_TCP);
+            ((IPv4) this.parent).setProtocol(IPv4.PROTOCOL_TCP);
 
         // compute checksum if needed
         if (this.checksum == 0) {
@@ -245,15 +259,15 @@
         TCP other = (TCP) obj;
         // May want to compare fields based on the flags set
         return (checksum == other.checksum) &&
-               (destinationPort == other.destinationPort) &&
-               (sourcePort == other.sourcePort) &&
-               (sequence == other.sequence) &&
-               (acknowledge == other.acknowledge) &&
-               (dataOffset == other.dataOffset) &&
-               (flags == other.flags) &&
-               (windowSize == other.windowSize) &&
-               (urgentPointer == other.urgentPointer) &&
-               (dataOffset == 5 || options.equals(other.options));
+                (destinationPort == other.destinationPort) &&
+                (sourcePort == other.sourcePort) &&
+                (sequence == other.sequence) &&
+                (acknowledge == other.acknowledge) &&
+                (dataOffset == other.dataOffset) &&
+                (flags == other.flags) &&
+                (windowSize == other.windowSize) &&
+                (urgentPointer == other.urgentPointer) &&
+                (dataOffset == 5 || options.equals(other.options));
     }
 
     @Override
@@ -271,7 +285,7 @@
         this.urgentPointer = bb.getShort();
         if (this.dataOffset > 5) {
             int optLength = (dataOffset << 2) - 20;
-            if (bb.limit() < bb.position()+optLength) {
+            if (bb.limit() < bb.position() + optLength) {
                 optLength = bb.limit() - bb.position();
             }
             try {
@@ -281,9 +295,9 @@
                 this.options = null;
             }
         }
-        
+
         this.payload = new Data();
-        this.payload = payload.deserialize(data, bb.position(), bb.limit()-bb.position());
+        this.payload = payload.deserialize(data, bb.position(), bb.limit() - bb.position());
         this.payload.setParent(this);
         return this;
     }
diff --git a/src/main/java/net/onrc/onos/core/packet/UDP.java b/src/main/java/net/onrc/onos/core/packet/UDP.java
index 950afaf..6b7cee6 100644
--- a/src/main/java/net/onrc/onos/core/packet/UDP.java
+++ b/src/main/java/net/onrc/onos/core/packet/UDP.java
@@ -1,19 +1,19 @@
 /**
-*    Copyright 2011, Big Switch Networks, Inc. 
-*    Originally created by David Erickson, Stanford University
-* 
-*    Licensed under the Apache License, Version 2.0 (the "License"); you may
-*    not use this file except in compliance with the License. You may obtain
-*    a copy of the License at
-*
-*         http://www.apache.org/licenses/LICENSE-2.0
-*
-*    Unless required by applicable law or agreed to in writing, software
-*    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-*    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-*    License for the specific language governing permissions and limitations
-*    under the License.
-**/
+ *    Copyright 2011, Big Switch Networks, Inc.
+ *    Originally created by David Erickson, Stanford University
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *    License for the specific language governing permissions and limitations
+ *    under the License.
+ **/
 
 package net.onrc.onos.core.packet;
 
@@ -22,13 +22,12 @@
 import java.util.Map;
 
 /**
- *
  * @author David Erickson (daviderickson@cs.stanford.edu)
  */
 public class UDP extends BasePacket {
     public static Map<Short, Class<? extends IPacket>> decodeMap;
-    public static short DHCP_SERVER_PORT = (short)67;
-    public static short DHCP_CLIENT_PORT = (short)68;
+    public static short DHCP_SERVER_PORT = (short) 67;
+    public static short DHCP_CLIENT_PORT = (short) 68;
 
     static {
         decodeMap = new HashMap<Short, Class<? extends IPacket>>();
@@ -37,7 +36,7 @@
          */
         UDP.decodeMap.put(DHCP_SERVER_PORT, DHCP.class);
         UDP.decodeMap.put(DHCP_CLIENT_PORT, DHCP.class);
-        
+
     }
 
     protected short sourcePort;
@@ -106,8 +105,8 @@
     /**
      * Serializes the packet. Will compute and set the following fields if they
      * are set to specific values at the time serialize is called:
-     *      -checksum : 0
-     *      -length : 0
+     * -checksum : 0
+     * -length : 0
      */
     public byte[] serialize() {
         byte[] payloadData = null;
@@ -130,7 +129,7 @@
             bb.put(payloadData);
 
         if (this.parent != null && this.parent instanceof IPv4)
-            ((IPv4)this.parent).setProtocol(IPv4.PROTOCOL_UDP);
+            ((IPv4) this.parent).setProtocol(IPv4.PROTOCOL_UDP);
 
         // compute checksum if needed
         if (this.checksum == 0) {
@@ -224,7 +223,7 @@
         } else {
             this.payload = new Data();
         }
-        this.payload = payload.deserialize(data, bb.position(), bb.limit()-bb.position());
+        this.payload = payload.deserialize(data, bb.position(), bb.limit() - bb.position());
         this.payload.setParent(this);
         return this;
     }
diff --git a/src/main/java/net/onrc/onos/core/registry/ControllerRegistryEntry.java b/src/main/java/net/onrc/onos/core/registry/ControllerRegistryEntry.java
index a4eee8a..7e13fdd 100644
--- a/src/main/java/net/onrc/onos/core/registry/ControllerRegistryEntry.java
+++ b/src/main/java/net/onrc/onos/core/registry/ControllerRegistryEntry.java
@@ -5,23 +5,23 @@
 
 public class ControllerRegistryEntry implements Comparable<ControllerRegistryEntry> {
 
-	private String controllerId;
-	private int sequenceNumber;
-	
-	public ControllerRegistryEntry(String controllerId, int sequenceNumber) {
-		this.controllerId = controllerId;
-		this.sequenceNumber = sequenceNumber;
-	}
-	
-	@JsonProperty("controllerId")
-	public String getControllerId(){
-		return controllerId;
-	}
+    private String controllerId;
+    private int sequenceNumber;
 
-	@Override
-	public int compareTo(ControllerRegistryEntry o) {
-		return sequenceNumber - o.sequenceNumber;
-		//return 0;
-	}
+    public ControllerRegistryEntry(String controllerId, int sequenceNumber) {
+        this.controllerId = controllerId;
+        this.sequenceNumber = sequenceNumber;
+    }
+
+    @JsonProperty("controllerId")
+    public String getControllerId() {
+        return controllerId;
+    }
+
+    @Override
+    public int compareTo(ControllerRegistryEntry o) {
+        return sequenceNumber - o.sequenceNumber;
+        //return 0;
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/registry/ControllerService.java b/src/main/java/net/onrc/onos/core/registry/ControllerService.java
index e1e15e9..3f96a3e 100644
--- a/src/main/java/net/onrc/onos/core/registry/ControllerService.java
+++ b/src/main/java/net/onrc/onos/core/registry/ControllerService.java
@@ -1,19 +1,18 @@
 package net.onrc.onos.core.registry;
 
 
-
 //@JsonRootName("controller")
 public class ControllerService {
 
-	private String controllerId;
-	
-	public ControllerService(){
-		this("");
-	}
-	
-	public ControllerService(String controllerId) {
-		this.controllerId = controllerId;
-	}
+    private String controllerId;
+
+    public ControllerService() {
+        this("");
+    }
+
+    public ControllerService(String controllerId) {
+        this.controllerId = controllerId;
+    }
 
     public void setControllerId(String controllerId) {
         this.controllerId = controllerId;
diff --git a/src/main/java/net/onrc/onos/core/registry/IControllerRegistryService.java b/src/main/java/net/onrc/onos/core/registry/IControllerRegistryService.java
index e271754..e06f158 100755
--- a/src/main/java/net/onrc/onos/core/registry/IControllerRegistryService.java
+++ b/src/main/java/net/onrc/onos/core/registry/IControllerRegistryService.java
@@ -10,11 +10,11 @@
  * A registry service that allows ONOS to register controllers and switches
  * in a way that is global to the entire ONOS cluster. The registry is the
  * arbiter for allowing controllers to control switches.
- *
+ * <p/>
  * The OVS/OF1.{2,3} fault tolerance model is a switch connects to multiple
  * controllers, and the controllers send role requests to determine what their
  * role is in controlling the switch.
- *
+ * <p/>
  * The ONOS fault tolerance model allows only a single controller to have
  * control of a switch (MASTER role) at once. Controllers therefore need a
  * mechanism that enables them to decide who should control a each switch.
@@ -52,7 +52,7 @@
      * @throws RegistryException Errors contacting the registry service
      */
     public void requestControl(long dpid, ControlChangeCallback cb)
-                throws RegistryException;
+            throws RegistryException;
 
     /**
      * Stop trying to take control of a switch. This removes the entry
@@ -94,12 +94,12 @@
      * the registry can be used to take control of any switches.
      *
      * @param controllerId A unique string ID identifying this controller
-     *        in the cluster
+     *                     in the cluster
      * @throws RegistryException for errors connecting to registry service,
-     *         controllerId already registered
+     *                           controllerId already registered
      */
     public void registerController(String controllerId)
-           throws RegistryException;
+            throws RegistryException;
 
     /**
      * Get all controllers in the cluster.
@@ -144,6 +144,7 @@
 
     /**
      * Get next unique id and retrieve a new range of ids if needed.
+     *
      * @param range range to use for the identifier
      * @return Id Block.
      */
diff --git a/src/main/java/net/onrc/onos/core/registry/IdBlock.java b/src/main/java/net/onrc/onos/core/registry/IdBlock.java
index deb02bf..d905917 100644
--- a/src/main/java/net/onrc/onos/core/registry/IdBlock.java
+++ b/src/main/java/net/onrc/onos/core/registry/IdBlock.java
@@ -1,31 +1,31 @@
 package net.onrc.onos.core.registry;
 
 public class IdBlock {
-	private long start;
-	private long end;
-	private long size;
-	
-	public IdBlock(long start, long end, long size) {
-		this.start = start;
-		this.end = end;
-		this.size = size;
-	}
-	
-	public long getStart() {
-		return start;
-	}
+    private long start;
+    private long end;
+    private long size;
 
-	public long getEnd() {
-		return end;
-	}
+    public IdBlock(long start, long end, long size) {
+        this.start = start;
+        this.end = end;
+        this.size = size;
+    }
 
-	public long getSize() {
-		return size;
-	}
-	
-	@Override
-	public String toString() {
-		return "IdBlock [start=" + start + ", end=" + end + ", size=" + size
-				+ "]";
-	}
+    public long getStart() {
+        return start;
+    }
+
+    public long getEnd() {
+        return end;
+    }
+
+    public long getSize() {
+        return size;
+    }
+
+    @Override
+    public String toString() {
+        return "IdBlock [start=" + start + ", end=" + end + ", size=" + size
+                + "]";
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/registry/RegistryException.java b/src/main/java/net/onrc/onos/core/registry/RegistryException.java
index 9bf0876..f05aef8 100644
--- a/src/main/java/net/onrc/onos/core/registry/RegistryException.java
+++ b/src/main/java/net/onrc/onos/core/registry/RegistryException.java
@@ -2,25 +2,25 @@
 
 public class RegistryException extends Exception {
 
-	private static final long serialVersionUID = -8276300722010217913L;
-	
-	/*
-	public RegistryException() {
-		// TODO Auto-generated constructor stub
-	}
+    private static final long serialVersionUID = -8276300722010217913L;
 
-	public RegistryException(Throwable cause) {
-		super(cause);
-		// TODO Auto-generated constructor stub
-	}
-	*/
-	
-	public RegistryException(String message) {
-		super(message);
-	}
-	
-	public RegistryException(String message, Throwable cause) {
-		super(message, cause);
-	}
+    /*
+    public RegistryException() {
+        // TODO Auto-generated constructor stub
+    }
+
+    public RegistryException(Throwable cause) {
+        super(cause);
+        // TODO Auto-generated constructor stub
+    }
+    */
+
+    public RegistryException(String message) {
+        super(message);
+    }
+
+    public RegistryException(String message, Throwable cause) {
+        super(message, cause);
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/registry/StandaloneRegistry.java b/src/main/java/net/onrc/onos/core/registry/StandaloneRegistry.java
index 88125ed..0f2f94c 100755
--- a/src/main/java/net/onrc/onos/core/registry/StandaloneRegistry.java
+++ b/src/main/java/net/onrc/onos/core/registry/StandaloneRegistry.java
@@ -23,176 +23,176 @@
  * Implementation of a registry that doesn't rely on any external registry
  * service. This is designed to be used only in single-node setups (e.g. for
  * development). All registry data is stored in local memory.
- * @author jono
  *
+ * @author jono
  */
 public class StandaloneRegistry implements IFloodlightModule,
-		IControllerRegistryService {
-	protected final static Logger log = LoggerFactory.getLogger(StandaloneRegistry.class);
-	
-	protected IRestApiService restApi;
-	
-	protected String controllerId = null;
-	protected Map<String, ControlChangeCallback> switchCallbacks;
+        IControllerRegistryService {
+    protected final static Logger log = LoggerFactory.getLogger(StandaloneRegistry.class);
 
-	//
-	// Unique ID generation state
-	//
-	private static AtomicLong nextUniqueId = new AtomicLong(0);
+    protected IRestApiService restApi;
 
-	@Override
-	public void requestControl(long dpid, ControlChangeCallback cb)
-			throws RegistryException {
-		if (controllerId == null) {
-			throw new RuntimeException(
-					"Must register a controller before calling requestControl");
-		}
-		
-		switchCallbacks.put(HexString.toHexString(dpid), cb);
-		
-		log.debug("Control granted for {}", HexString.toHexString(dpid));
-		
-		//Immediately grant request for control
-		if (cb != null) {
-			cb.controlChanged(dpid, true);
-		}
-	}
+    protected String controllerId = null;
+    protected Map<String, ControlChangeCallback> switchCallbacks;
 
-	@Override
-	public void releaseControl(long dpid) {
-		ControlChangeCallback cb = switchCallbacks.remove(HexString.toHexString(dpid));
-		
-		log.debug("Control released for {}", HexString.toHexString(dpid));
-		
-		if (cb != null){
-			cb.controlChanged(dpid, false);
-		}
-	}
+    //
+    // Unique ID generation state
+    //
+    private static AtomicLong nextUniqueId = new AtomicLong(0);
 
-	@Override
-	public boolean hasControl(long dpid) {
-		return switchCallbacks.containsKey(HexString.toHexString(dpid));
-	}
+    @Override
+    public void requestControl(long dpid, ControlChangeCallback cb)
+            throws RegistryException {
+        if (controllerId == null) {
+            throw new RuntimeException(
+                    "Must register a controller before calling requestControl");
+        }
 
-	@Override
-	public boolean isClusterLeader() {
-	    return true;
-	}
+        switchCallbacks.put(HexString.toHexString(dpid), cb);
 
-	@Override
-	public String getControllerId() {
-		return controllerId;
-	}
+        log.debug("Control granted for {}", HexString.toHexString(dpid));
 
-	@Override
-	public void registerController(String controllerId)
-			throws RegistryException {
-		if (this.controllerId != null) {
-			throw new RegistryException(
-					"Controller already registered with id " + this.controllerId);
-		}
-		this.controllerId = controllerId;
-	}
+        //Immediately grant request for control
+        if (cb != null) {
+            cb.controlChanged(dpid, true);
+        }
+    }
 
-	@Override
-	public Collection<String> getAllControllers() throws RegistryException {
-		List<String> l = new ArrayList<String>();
-		l.add(controllerId);
-		return l;
-	}
+    @Override
+    public void releaseControl(long dpid) {
+        ControlChangeCallback cb = switchCallbacks.remove(HexString.toHexString(dpid));
 
-	@Override
-	public String getControllerForSwitch(long dpid) throws RegistryException {
-		return (switchCallbacks.get(HexString.toHexString(dpid)) != null)? controllerId: null;
-	}
+        log.debug("Control released for {}", HexString.toHexString(dpid));
 
-	@Override
-	public Map<String, List<ControllerRegistryEntry>> getAllSwitches() {
-		Map<String, List<ControllerRegistryEntry>> switches = 
-				new HashMap<String, List<ControllerRegistryEntry>>();
-		
-		for (String strSwitch : switchCallbacks.keySet()){
-			log.debug("Switch _{}", strSwitch);
-			List<ControllerRegistryEntry> list = new ArrayList<ControllerRegistryEntry>();
-			list.add(new ControllerRegistryEntry(controllerId, 0));
-			
-			switches.put(strSwitch, list);
-		}
-		
-		return switches;
-	}
+        if (cb != null) {
+            cb.controlChanged(dpid, false);
+        }
+    }
 
-	@Override
-	public Collection<Long> getSwitchesControlledByController(
-			String controllerId) {
-		throw new RuntimeException("Not yet implemented");
-	}
-	
-	private long blockTop = 0L;
-	private static final long BLOCK_SIZE = 0x1000000L;
-	
-	/**
-	 * Returns a block of IDs which are unique and unused.
-	 * Range of IDs is fixed size and is assigned incrementally as this method called.
-	 */
-	@Override
-	public synchronized IdBlock allocateUniqueIdBlock(){
-		long blockHead = blockTop;
-		long blockTail = blockTop + BLOCK_SIZE;
-		
-		IdBlock block = new IdBlock(blockHead, blockTail - 1, BLOCK_SIZE);
-		blockTop = blockTail;
-		
-		return block;
-	}
+    @Override
+    public boolean hasControl(long dpid) {
+        return switchCallbacks.containsKey(HexString.toHexString(dpid));
+    }
 
-	/**
-	 * Get a globally unique ID.
-	 *
-	 * @return a globally unique ID.
-	 */
-	@Override
-	public long getNextUniqueId() {
-		return nextUniqueId.incrementAndGet();
-	}
+    @Override
+    public boolean isClusterLeader() {
+        return true;
+    }
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-		Collection<Class<? extends IFloodlightService>> l = 
-				new ArrayList<Class<? extends IFloodlightService>>();
-		l.add(IControllerRegistryService.class);
-		return l;
-	}
+    @Override
+    public String getControllerId() {
+        return controllerId;
+    }
 
-	@Override
-	public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
-		Map<Class<? extends IFloodlightService>, IFloodlightService> m = 
-				new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
-		m.put(IControllerRegistryService.class,  this);
-		return m;
-	}
+    @Override
+    public void registerController(String controllerId)
+            throws RegistryException {
+        if (this.controllerId != null) {
+            throw new RegistryException(
+                    "Controller already registered with id " + this.controllerId);
+        }
+        this.controllerId = controllerId;
+    }
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
-		Collection<Class<? extends IFloodlightService>> l =
+    @Override
+    public Collection<String> getAllControllers() throws RegistryException {
+        List<String> l = new ArrayList<String>();
+        l.add(controllerId);
+        return l;
+    }
+
+    @Override
+    public String getControllerForSwitch(long dpid) throws RegistryException {
+        return (switchCallbacks.get(HexString.toHexString(dpid)) != null) ? controllerId : null;
+    }
+
+    @Override
+    public Map<String, List<ControllerRegistryEntry>> getAllSwitches() {
+        Map<String, List<ControllerRegistryEntry>> switches =
+                new HashMap<String, List<ControllerRegistryEntry>>();
+
+        for (String strSwitch : switchCallbacks.keySet()) {
+            log.debug("Switch _{}", strSwitch);
+            List<ControllerRegistryEntry> list = new ArrayList<ControllerRegistryEntry>();
+            list.add(new ControllerRegistryEntry(controllerId, 0));
+
+            switches.put(strSwitch, list);
+        }
+
+        return switches;
+    }
+
+    @Override
+    public Collection<Long> getSwitchesControlledByController(
+            String controllerId) {
+        throw new RuntimeException("Not yet implemented");
+    }
+
+    private long blockTop = 0L;
+    private static final long BLOCK_SIZE = 0x1000000L;
+
+    /**
+     * Returns a block of IDs which are unique and unused.
+     * Range of IDs is fixed size and is assigned incrementally as this method called.
+     */
+    @Override
+    public synchronized IdBlock allocateUniqueIdBlock() {
+        long blockHead = blockTop;
+        long blockTail = blockTop + BLOCK_SIZE;
+
+        IdBlock block = new IdBlock(blockHead, blockTail - 1, BLOCK_SIZE);
+        blockTop = blockTail;
+
+        return block;
+    }
+
+    /**
+     * Get a globally unique ID.
+     *
+     * @return a globally unique ID.
+     */
+    @Override
+    public long getNextUniqueId() {
+        return nextUniqueId.incrementAndGet();
+    }
+
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleServices() {
+        Collection<Class<? extends IFloodlightService>> l =
                 new ArrayList<Class<? extends IFloodlightService>>();
-		l.add(IFloodlightProviderService.class);
-		l.add(IRestApiService.class);
-		return l;
-	}
+        l.add(IControllerRegistryService.class);
+        return l;
+    }
 
-	@Override
-	public void init(FloodlightModuleContext context)
-			throws FloodlightModuleException {
-		restApi = context.getServiceImpl(IRestApiService.class);
-		
-		switchCallbacks = new HashMap<String, ControlChangeCallback>();
-	}
+    @Override
+    public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
+        Map<Class<? extends IFloodlightService>, IFloodlightService> m =
+                new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
+        m.put(IControllerRegistryService.class, this);
+        return m;
+    }
 
-	@Override
-	public void startUp(FloodlightModuleContext context) {
-		restApi.addRestletRoutable(new RegistryWebRoutable());
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
+        Collection<Class<? extends IFloodlightService>> l =
+                new ArrayList<Class<? extends IFloodlightService>>();
+        l.add(IFloodlightProviderService.class);
+        l.add(IRestApiService.class);
+        return l;
+    }
+
+    @Override
+    public void init(FloodlightModuleContext context)
+            throws FloodlightModuleException {
+        restApi = context.getServiceImpl(IRestApiService.class);
+
+        switchCallbacks = new HashMap<String, ControlChangeCallback>();
+    }
+
+    @Override
+    public void startUp(FloodlightModuleContext context) {
+        restApi.addRestletRoutable(new RegistryWebRoutable());
+    }
 
     @Override
     public IdBlock allocateUniqueIdBlock(long range) {
diff --git a/src/main/java/net/onrc/onos/core/registry/SwitchLeadershipData.java b/src/main/java/net/onrc/onos/core/registry/SwitchLeadershipData.java
index 9ccd47b..62a6b58 100644
--- a/src/main/java/net/onrc/onos/core/registry/SwitchLeadershipData.java
+++ b/src/main/java/net/onrc/onos/core/registry/SwitchLeadershipData.java
@@ -6,28 +6,28 @@
 import org.apache.curator.framework.recipes.leader.LeaderLatchListener;
 
 public class SwitchLeadershipData {
-	
-	private final LeaderLatch latch;
-	private final ControlChangeCallback cb;
-	private final LeaderLatchListener listener;
 
-	public SwitchLeadershipData(LeaderLatch latch, ControlChangeCallback cb,
-			LeaderLatchListener listener) {
-		this.latch = latch;
-		this.cb = cb;
-		this.listener = listener;
-	}
-	
-	public LeaderLatch getLatch(){
-		return latch;
-	}
-	
-	public ControlChangeCallback getCallback(){
-		return cb;
-	}
-	
-	public LeaderLatchListener getListener() {
-		return listener;
-	}
+    private final LeaderLatch latch;
+    private final ControlChangeCallback cb;
+    private final LeaderLatchListener listener;
+
+    public SwitchLeadershipData(LeaderLatch latch, ControlChangeCallback cb,
+                                LeaderLatchListener listener) {
+        this.latch = latch;
+        this.cb = cb;
+        this.listener = listener;
+    }
+
+    public LeaderLatch getLatch() {
+        return latch;
+    }
+
+    public ControlChangeCallback getCallback() {
+        return cb;
+    }
+
+    public LeaderLatchListener getListener() {
+        return listener;
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/registry/ZookeeperRegistry.java b/src/main/java/net/onrc/onos/core/registry/ZookeeperRegistry.java
index aa3e98b..1897631 100755
--- a/src/main/java/net/onrc/onos/core/registry/ZookeeperRegistry.java
+++ b/src/main/java/net/onrc/onos/core/registry/ZookeeperRegistry.java
@@ -51,600 +51,603 @@
 /**
  * A registry service that uses Zookeeper. All data is stored in Zookeeper,
  * so this can be used as a global registry in a multi-node ONOS cluster.
- * @author jono
  *
+ * @author jono
  */
 public class ZookeeperRegistry implements IFloodlightModule, IControllerRegistryService {
 
-	protected final static Logger log = LoggerFactory.getLogger(ZookeeperRegistry.class);
-	protected String controllerId = null;
-	
-	protected IRestApiService restApi;
-	
-	//This is the default, it's overwritten by the connectionString configuration parameter
-	protected String connectionString = "localhost:2181";
-	
-	private final String namespace = "onos";
-	private final String switchLatchesPath = "/switches";
-	private final String CLUSTER_LEADER_PATH = "/cluster/leader";
+    protected final static Logger log = LoggerFactory.getLogger(ZookeeperRegistry.class);
+    protected String controllerId = null;
 
-	private final String SERVICES_PATH = "/"; //i.e. the root of our namespace
-	private final String CONTROLLER_SERVICE_NAME = "controllers";
-	
-	protected CuratorFramework client;
-	
-	protected PathChildrenCache switchCache;
+    protected IRestApiService restApi;
 
-	protected ConcurrentHashMap<String, SwitchLeadershipData> switches;
-	protected Map<String, PathChildrenCache> switchPathCaches;
+    //This is the default, it's overwritten by the connectionString configuration parameter
+    protected String connectionString = "localhost:2181";
 
-	protected LeaderLatch clusterLeaderLatch;
-	protected ClusterLeaderListener clusterLeaderListener;
-	private static final long CLUSTER_LEADER_ELECTION_RETRY_MS = 100;
+    private final String namespace = "onos";
+    private final String switchLatchesPath = "/switches";
+    private final String CLUSTER_LEADER_PATH = "/cluster/leader";
 
-	private final String ID_COUNTER_PATH = "/flowidcounter";
-	private final Long ID_BLOCK_SIZE = 0x100000000L;
-	protected DistributedAtomicLong distributedIdCounter;
-	
-	//Zookeeper performance-related configuration
-	protected static final int sessionTimeout = 5000;
-	protected static final int connectionTimeout = 7000;
+    private final String SERVICES_PATH = "/"; //i.e. the root of our namespace
+    private final String CONTROLLER_SERVICE_NAME = "controllers";
 
-	//
-	// Unique ID generation state
-	// TODO: The implementation must be updated to use the Zookeeper
-	// instead of a ramdon generator.
-	//
-	private static Random randomGenerator = new Random();
-	private static int nextUniqueIdPrefix = 0;
-	private static int nextUniqueIdSuffix = 0;
+    protected CuratorFramework client;
 
-    private final BlockingQueue<SwitchLeaderEvent> switchLeadershipEvents = 
-    		new LinkedBlockingQueue<SwitchLeaderEvent>();
-    
+    protected PathChildrenCache switchCache;
+
+    protected ConcurrentHashMap<String, SwitchLeadershipData> switches;
+    protected Map<String, PathChildrenCache> switchPathCaches;
+
+    protected LeaderLatch clusterLeaderLatch;
+    protected ClusterLeaderListener clusterLeaderListener;
+    private static final long CLUSTER_LEADER_ELECTION_RETRY_MS = 100;
+
+    private final String ID_COUNTER_PATH = "/flowidcounter";
+    private final Long ID_BLOCK_SIZE = 0x100000000L;
+    protected DistributedAtomicLong distributedIdCounter;
+
+    //Zookeeper performance-related configuration
+    protected static final int sessionTimeout = 5000;
+    protected static final int connectionTimeout = 7000;
+
+    //
+    // Unique ID generation state
+    // TODO: The implementation must be updated to use the Zookeeper
+    // instead of a ramdon generator.
+    //
+    private static Random randomGenerator = new Random();
+    private static int nextUniqueIdPrefix = 0;
+    private static int nextUniqueIdSuffix = 0;
+
+    private final BlockingQueue<SwitchLeaderEvent> switchLeadershipEvents =
+            new LinkedBlockingQueue<SwitchLeaderEvent>();
+
     private ExecutorService eventThreadExecutorService;
-    
+
     private static class SwitchLeaderEvent {
-    	public final long dpid;
-    	public final boolean isLeader;
-    	
-    	public SwitchLeaderEvent(long dpid, boolean isLeader) {
-    		this.dpid = dpid;
-    		this.isLeader = isLeader;
-    	}
+        public final long dpid;
+        public final boolean isLeader;
+
+        public SwitchLeaderEvent(long dpid, boolean isLeader) {
+            this.dpid = dpid;
+            this.isLeader = isLeader;
+        }
     }
-    
+
     /*
      * Dispatcher thread for leadership change events coming from Curator.
      */
     private void dispatchEvents() {
-    	while (!Thread.currentThread().isInterrupted()) {
-    		try {
-    			SwitchLeaderEvent event = switchLeadershipEvents.take();
-    			SwitchLeadershipData swData = switches.get(HexString.toHexString(event.dpid));
-    			if (swData == null) {
-    				log.debug("Leadership data {} not found", event.dpid);
-    				continue;
-    			}
-    			
-    			swData.getCallback().controlChanged(event.dpid, event.isLeader);
-    		} catch (InterruptedException e) {
-    			Thread.currentThread().interrupt();
-    			break;
-    		} catch (Exception e) {
-    			log.error("Exception in registry event thread", e);
-    		}
-    	}
+        while (!Thread.currentThread().isInterrupted()) {
+            try {
+                SwitchLeaderEvent event = switchLeadershipEvents.take();
+                SwitchLeadershipData swData = switches.get(HexString.toHexString(event.dpid));
+                if (swData == null) {
+                    log.debug("Leadership data {} not found", event.dpid);
+                    continue;
+                }
+
+                swData.getCallback().controlChanged(event.dpid, event.isLeader);
+            } catch (InterruptedException e) {
+                Thread.currentThread().interrupt();
+                break;
+            } catch (Exception e) {
+                log.error("Exception in registry event thread", e);
+            }
+        }
     }
 
-	protected class SwitchLeaderListener implements LeaderLatchListener{
-		String dpid;
-		LeaderLatch latch;
-		
-		public SwitchLeaderListener(String dpid, LeaderLatch latch){
-			this.dpid = dpid;
-			this.latch = latch;
-		}
+    protected class SwitchLeaderListener implements LeaderLatchListener {
+        String dpid;
+        LeaderLatch latch;
 
-		@Override
-		public void isLeader() {
-		    log.debug("Became leader for {}", dpid);
-		    
-		    switchLeadershipEvents.offer(new SwitchLeaderEvent(HexString.toLong(dpid), true));
-		}
+        public SwitchLeaderListener(String dpid, LeaderLatch latch) {
+            this.dpid = dpid;
+            this.latch = latch;
+        }
 
-		@Override
-		public void notLeader() {
-		    log.debug("Lost leadership for {}", dpid);
-			
-			switchLeadershipEvents.offer(new SwitchLeaderEvent(HexString.toLong(dpid), false));
-		}
-	}
-	
-	protected class SwitchPathCacheListener implements PathChildrenCacheListener {
-		@Override
-		public void childEvent(CuratorFramework client,
-				PathChildrenCacheEvent event) throws Exception {
-			
-			String strSwitch = null;
-			if (event.getData() != null){
-				String[] splitted = event.getData().getPath().split("/");
-				strSwitch = splitted[splitted.length - 1];
-			}
-			
-			switch (event.getType()){
-			case CHILD_ADDED:
-			case CHILD_UPDATED:
-				//Check we have a PathChildrenCache for this child, add one if not
-				synchronized (switchPathCaches){
-					if (switchPathCaches.get(strSwitch) == null){
-						PathChildrenCache pc = new PathChildrenCache(client, 
-								event.getData().getPath(), true);
-						pc.start(StartMode.NORMAL);
-						switchPathCaches.put(strSwitch, pc);
-					}
-				}
-				break;
-			case CHILD_REMOVED:
-				//Remove our PathChildrenCache for this child
-				PathChildrenCache pc = null;
-				synchronized(switchPathCaches){
-					pc = switchPathCaches.remove(strSwitch);
-				}
-				if (pc != null){
-					pc.close();
-				}
-				break;
-			default:
-				//All other switchLeadershipEvents are connection status switchLeadershipEvents. We don't need to 
-				//do anything as the path cache handles these on its own.
-				break;
-			}
-			
-		}
-	};
+        @Override
+        public void isLeader() {
+            log.debug("Became leader for {}", dpid);
 
-	protected class ClusterLeaderListener implements LeaderLatchListener {
-		LeaderLatch latch;
+            switchLeadershipEvents.offer(new SwitchLeaderEvent(HexString.toLong(dpid), true));
+        }
 
-		public ClusterLeaderListener(LeaderLatch latch) {
-			this.latch = latch;
-		}
+        @Override
+        public void notLeader() {
+            log.debug("Lost leadership for {}", dpid);
 
-		//
-		// NOTE: If we need to support callbacks when the
-		// leadership changes, those should be called here.
-		//
-		
-		@Override
-		public void isLeader() {
-			log.debug("Cluster leadership aquired");
-		}
+            switchLeadershipEvents.offer(new SwitchLeaderEvent(HexString.toLong(dpid), false));
+        }
+    }
 
-		@Override
-		public void notLeader() {
-			log.debug("Cluster leadership lost");
-		}
-	}
+    protected class SwitchPathCacheListener implements PathChildrenCacheListener {
+        @Override
+        public void childEvent(CuratorFramework client,
+                               PathChildrenCacheEvent event) throws Exception {
 
-	/**
-	 * Listens for changes to the switch znodes in Zookeeper. This maintains
-	 * the second level of PathChildrenCaches that hold the controllers 
-	 * contending for each switch - there's one for each switch.
-	 */
-	PathChildrenCacheListener switchPathCacheListener = new SwitchPathCacheListener();
-	protected ServiceDiscovery<ControllerService> serviceDiscovery;
-	protected ServiceCache<ControllerService> serviceCache;
-
-	
-	@Override
-	public void requestControl(long dpid, ControlChangeCallback cb) throws RegistryException {
-		log.info("Requesting control for {}", HexString.toHexString(dpid));
-		
-		if (controllerId == null){
-			throw new RuntimeException("Must register a controller before calling requestControl");
-		}
-		
-		String dpidStr = HexString.toHexString(dpid);
-		String latchPath = switchLatchesPath + "/" + dpidStr;
-		
-		if (switches.get(dpidStr) != null){
-			log.debug("Already contesting {}, returning", HexString.toHexString(dpid));
-			throw new RegistryException("Already contesting control for " + dpidStr);
-		}
-		
-		LeaderLatch latch = new LeaderLatch(client, latchPath, controllerId);
-		SwitchLeaderListener listener = new SwitchLeaderListener(dpidStr, latch); 
-		latch.addListener(listener);
-		
-
-		SwitchLeadershipData swData = new SwitchLeadershipData(latch, cb, listener);
-		SwitchLeadershipData oldData = switches.putIfAbsent(dpidStr, swData);
-		
-		if (oldData != null){
-			//There was already data for that key in the map
-			//i.e. someone else got here first so we can't succeed
-			log.debug("Already requested control for {}", dpidStr);
-			throw new RegistryException("Already requested control for " + dpidStr);
-		}
-		
-		//Now that we know we were able to add our latch to the collection,
-		//we can start the leader election in Zookeeper. However I don't know
-		//how to handle if the start fails - the latch is already in our
-		//switches list.
-		//TODO seems like there's a Curator bug when latch.start is called when
-		//there's no Zookeeper connection which causes two znodes to be put in 
-		//Zookeeper at the latch path when we reconnect to Zookeeper.
-		try {
-			latch.start();
-		} catch (Exception e) {
-			log.warn("Error starting leader latch: {}", e.getMessage());
-			throw new RegistryException("Error starting leader latch for " + dpidStr, e);
-		}
-		
-	}
-
-	@Override
-	public void releaseControl(long dpid) {
-		log.info("Releasing control for {}", HexString.toHexString(dpid));
-		
-		String dpidStr = HexString.toHexString(dpid);
-		
-		SwitchLeadershipData swData = switches.remove(dpidStr);
-		
-		if (swData == null) {
-			log.debug("Trying to release control of a switch we are not contesting");
-			return;
-		}
-
-		LeaderLatch latch = swData.getLatch();
-		
-		latch.removeListener(swData.getListener());
-		
-		try {
-			latch.close();
-		} catch (IOException e) {
-			//I think it's OK not to do anything here. Either the node got 
-			//deleted correctly, or the connection went down and the node got deleted.
-			log.debug("releaseControl: caught IOException {}", dpidStr);
-		}
-	}
-
-	@Override
-	public boolean hasControl(long dpid) {
-		String dpidStr = HexString.toHexString(dpid);
-		
-		SwitchLeadershipData swData = switches.get(dpidStr);
-		
-		if (swData == null) {
-			log.warn("No leader latch for dpid {}", dpidStr);
-			return false;
-		}
-		
-		return swData.getLatch().hasLeadership();
-	}
-
-	@Override
-	public boolean isClusterLeader() {
-	    return clusterLeaderLatch.hasLeadership();
-	}
-
-	@Override
-	public String getControllerId() {
-		return controllerId;
-	}
-	
-	@Override
-	public Collection<String> getAllControllers() throws RegistryException {
-		log.debug("Getting all controllers");
-		
-		List<String> controllers = new ArrayList<String>();
-		for (ServiceInstance<ControllerService> instance : serviceCache.getInstances()){
-			String id = instance.getPayload().getControllerId();
-			if (!controllers.contains(id)){
-				controllers.add(id);
-			}
-		}
-
-		return controllers;
-	}
-
-	@Override
-	public void registerController(String id) throws RegistryException {
-		if (controllerId != null) {
-			throw new RegistryException(
-					"Controller already registered with id " + controllerId);
-		}
-		
-		controllerId = id;
-		
-		try {
-			ServiceInstance<ControllerService> thisInstance = ServiceInstance.<ControllerService>builder()
-			        .name(CONTROLLER_SERVICE_NAME)
-			        .payload(new ControllerService(controllerId))
-			        //.port((int)(65535 * Math.random())) // in a real application, you'd use a common port
-			        //.uriSpec(uriSpec)
-			        .build();
-			
-			serviceDiscovery.registerService(thisInstance);
-		} catch (Exception e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
-		}
-		
-	}
-	
-	@Override
-	public String getControllerForSwitch(long dpid) throws RegistryException {
-		String dpidStr = HexString.toHexString(dpid);
-		
-		PathChildrenCache switchCache = switchPathCaches.get(dpidStr);
-		
-		if (switchCache == null){
-			log.warn("Tried to get controller for non-existent switch");
-			return null;
-		}
-		
-		try {
-			//We've seen issues with these caches get stuck out of date, so we'll have to
-			//force them to refresh before each read. This slows down the method as it
-			//blocks on a Zookeeper query, however at the moment only the cleanup thread
-			//uses this and that isn't particularly time-sensitive.
-			switchCache.rebuild();
-		} catch (Exception e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
-		}
-		
-		List<ChildData> sortedData = new ArrayList<ChildData>(switchCache.getCurrentData()); 
-		
-		Collections.sort(
-				sortedData,
-				new Comparator<ChildData>(){
-					private String getSequenceNumber(String path){
-						return path.substring(path.lastIndexOf('-') + 1);
-					}
-					@Override
-					public int compare(ChildData lhs, ChildData rhs) {
-						return getSequenceNumber(lhs.getPath()).
-								compareTo(getSequenceNumber(rhs.getPath()));
-					}
-				}
-			);
-		
-		if (sortedData.size() == 0){
-			return null;
-		}
-		
-		return new String(sortedData.get(0).getData(), Charsets.UTF_8);
-	}
-	
-	@Override
-	public Collection<Long> getSwitchesControlledByController(String controllerId) {
-		//TODO remove this if not needed
-		throw new RuntimeException("Not yet implemented");
-	}
-	
-
-	//TODO what should happen when there's no ZK connection? Currently we just return
-	//the cache but this may lead to false impressions - i.e. we don't actually know
-	//what's in ZK so we shouldn't say we do
-	@Override
-	public Map<String, List<ControllerRegistryEntry>> getAllSwitches() {
-		Map<String, List<ControllerRegistryEntry>> data = 
-				new HashMap<String, List<ControllerRegistryEntry>>();
-		
-		for (Map.Entry<String, PathChildrenCache> entry : switchPathCaches.entrySet()){
-			List<ControllerRegistryEntry> contendingControllers =
-					 new ArrayList<ControllerRegistryEntry>(); 
-			
-			if (entry.getValue().getCurrentData().size() < 1){
-				//TODO prevent even having the PathChildrenCache in this case
-				//log.info("Switch entry with no leader elections: {}", entry.getKey());
-				continue;
-			}
-			
-			for (ChildData d : entry.getValue().getCurrentData()) {
-			
-				String controllerId = new String(d.getData(), Charsets.UTF_8);
-				
-				String[] splitted = d.getPath().split("-");
-				int sequenceNumber = Integer.parseInt(splitted[splitted.length - 1]);
-				
-				contendingControllers.add(new ControllerRegistryEntry(controllerId, sequenceNumber));
-			 }
-			
-			Collections.sort(contendingControllers);
-			data.put(entry.getKey(), contendingControllers);
-		}
-		return data;
-	}
-	
-        public IdBlock allocateUniqueIdBlock(long range) {
-            try {
-                AtomicValue<Long> result = null;
-                do {
-                    result = distributedIdCounter.add(range);
-                } while (result == null || !result.succeeded());
-
-                return new IdBlock(result.preValue(), result.postValue() - 1, range);
-            } catch (Exception e) {
-                log.error("Error allocating ID block");
+            String strSwitch = null;
+            if (event.getData() != null) {
+                String[] splitted = event.getData().getPath().split("/");
+                strSwitch = splitted[splitted.length - 1];
             }
+
+            switch (event.getType()) {
+                case CHILD_ADDED:
+                case CHILD_UPDATED:
+                    //Check we have a PathChildrenCache for this child, add one if not
+                    synchronized (switchPathCaches) {
+                        if (switchPathCaches.get(strSwitch) == null) {
+                            PathChildrenCache pc = new PathChildrenCache(client,
+                                    event.getData().getPath(), true);
+                            pc.start(StartMode.NORMAL);
+                            switchPathCaches.put(strSwitch, pc);
+                        }
+                    }
+                    break;
+                case CHILD_REMOVED:
+                    //Remove our PathChildrenCache for this child
+                    PathChildrenCache pc = null;
+                    synchronized (switchPathCaches) {
+                        pc = switchPathCaches.remove(strSwitch);
+                    }
+                    if (pc != null) {
+                        pc.close();
+                    }
+                    break;
+                default:
+                    //All other switchLeadershipEvents are connection status switchLeadershipEvents. We don't need to
+                    //do anything as the path cache handles these on its own.
+                    break;
+            }
+
+        }
+    }
+
+    ;
+
+    protected class ClusterLeaderListener implements LeaderLatchListener {
+        LeaderLatch latch;
+
+        public ClusterLeaderListener(LeaderLatch latch) {
+            this.latch = latch;
+        }
+
+        //
+        // NOTE: If we need to support callbacks when the
+        // leadership changes, those should be called here.
+        //
+
+        @Override
+        public void isLeader() {
+            log.debug("Cluster leadership aquired");
+        }
+
+        @Override
+        public void notLeader() {
+            log.debug("Cluster leadership lost");
+        }
+    }
+
+    /**
+     * Listens for changes to the switch znodes in Zookeeper. This maintains
+     * the second level of PathChildrenCaches that hold the controllers
+     * contending for each switch - there's one for each switch.
+     */
+    PathChildrenCacheListener switchPathCacheListener = new SwitchPathCacheListener();
+    protected ServiceDiscovery<ControllerService> serviceDiscovery;
+    protected ServiceCache<ControllerService> serviceCache;
+
+
+    @Override
+    public void requestControl(long dpid, ControlChangeCallback cb) throws RegistryException {
+        log.info("Requesting control for {}", HexString.toHexString(dpid));
+
+        if (controllerId == null) {
+            throw new RuntimeException("Must register a controller before calling requestControl");
+        }
+
+        String dpidStr = HexString.toHexString(dpid);
+        String latchPath = switchLatchesPath + "/" + dpidStr;
+
+        if (switches.get(dpidStr) != null) {
+            log.debug("Already contesting {}, returning", HexString.toHexString(dpid));
+            throw new RegistryException("Already contesting control for " + dpidStr);
+        }
+
+        LeaderLatch latch = new LeaderLatch(client, latchPath, controllerId);
+        SwitchLeaderListener listener = new SwitchLeaderListener(dpidStr, latch);
+        latch.addListener(listener);
+
+
+        SwitchLeadershipData swData = new SwitchLeadershipData(latch, cb, listener);
+        SwitchLeadershipData oldData = switches.putIfAbsent(dpidStr, swData);
+
+        if (oldData != null) {
+            //There was already data for that key in the map
+            //i.e. someone else got here first so we can't succeed
+            log.debug("Already requested control for {}", dpidStr);
+            throw new RegistryException("Already requested control for " + dpidStr);
+        }
+
+        //Now that we know we were able to add our latch to the collection,
+        //we can start the leader election in Zookeeper. However I don't know
+        //how to handle if the start fails - the latch is already in our
+        //switches list.
+        //TODO seems like there's a Curator bug when latch.start is called when
+        //there's no Zookeeper connection which causes two znodes to be put in
+        //Zookeeper at the latch path when we reconnect to Zookeeper.
+        try {
+            latch.start();
+        } catch (Exception e) {
+            log.warn("Error starting leader latch: {}", e.getMessage());
+            throw new RegistryException("Error starting leader latch for " + dpidStr, e);
+        }
+
+    }
+
+    @Override
+    public void releaseControl(long dpid) {
+        log.info("Releasing control for {}", HexString.toHexString(dpid));
+
+        String dpidStr = HexString.toHexString(dpid);
+
+        SwitchLeadershipData swData = switches.remove(dpidStr);
+
+        if (swData == null) {
+            log.debug("Trying to release control of a switch we are not contesting");
+            return;
+        }
+
+        LeaderLatch latch = swData.getLatch();
+
+        latch.removeListener(swData.getListener());
+
+        try {
+            latch.close();
+        } catch (IOException e) {
+            //I think it's OK not to do anything here. Either the node got
+            //deleted correctly, or the connection went down and the node got deleted.
+            log.debug("releaseControl: caught IOException {}", dpidStr);
+        }
+    }
+
+    @Override
+    public boolean hasControl(long dpid) {
+        String dpidStr = HexString.toHexString(dpid);
+
+        SwitchLeadershipData swData = switches.get(dpidStr);
+
+        if (swData == null) {
+            log.warn("No leader latch for dpid {}", dpidStr);
+            return false;
+        }
+
+        return swData.getLatch().hasLeadership();
+    }
+
+    @Override
+    public boolean isClusterLeader() {
+        return clusterLeaderLatch.hasLeadership();
+    }
+
+    @Override
+    public String getControllerId() {
+        return controllerId;
+    }
+
+    @Override
+    public Collection<String> getAllControllers() throws RegistryException {
+        log.debug("Getting all controllers");
+
+        List<String> controllers = new ArrayList<String>();
+        for (ServiceInstance<ControllerService> instance : serviceCache.getInstances()) {
+            String id = instance.getPayload().getControllerId();
+            if (!controllers.contains(id)) {
+                controllers.add(id);
+            }
+        }
+
+        return controllers;
+    }
+
+    @Override
+    public void registerController(String id) throws RegistryException {
+        if (controllerId != null) {
+            throw new RegistryException(
+                    "Controller already registered with id " + controllerId);
+        }
+
+        controllerId = id;
+
+        try {
+            ServiceInstance<ControllerService> thisInstance = ServiceInstance.<ControllerService>builder()
+                    .name(CONTROLLER_SERVICE_NAME)
+                    .payload(new ControllerService(controllerId))
+                            //.port((int)(65535 * Math.random())) // in a real application, you'd use a common port
+                            //.uriSpec(uriSpec)
+                    .build();
+
+            serviceDiscovery.registerService(thisInstance);
+        } catch (Exception e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+
+    }
+
+    @Override
+    public String getControllerForSwitch(long dpid) throws RegistryException {
+        String dpidStr = HexString.toHexString(dpid);
+
+        PathChildrenCache switchCache = switchPathCaches.get(dpidStr);
+
+        if (switchCache == null) {
+            log.warn("Tried to get controller for non-existent switch");
             return null;
         }
-        
-	/**
-	 * Returns a block of IDs which are unique and unused.
-	 * Range of IDs is fixed size and is assigned incrementally as this method called.
-	 * Since the range of IDs is managed by Zookeeper in distributed way, this method may block when
-	 * requests come up simultaneously.
-	 */
-        @Override
-	public IdBlock allocateUniqueIdBlock(){
-            return allocateUniqueIdBlock(ID_BLOCK_SIZE);
-	}
 
-	/**
-	 * Get a globally unique ID.
-	 *
-	 * @return a globally unique ID.
-	 */
-	@Override
-	public synchronized long getNextUniqueId() {
-		//
-		// Generate the next Unique ID.
-		//
-		// TODO: For now, the higher 32 bits are random, and
-		// the lower 32 bits are sequential.
-		// The implementation must be updated to use the Zookeeper
-		// to allocate the higher 32 bits (globally unique).
-		//
-		if ((nextUniqueIdSuffix & 0xffffffffL) == 0xffffffffL) {
-			nextUniqueIdPrefix = randomGenerator.nextInt();
-			nextUniqueIdSuffix = 0;
-		} else {
-			nextUniqueIdSuffix++;
-		}
-		long result = (long)nextUniqueIdPrefix << 32;
-		result = result | (0xffffffffL & nextUniqueIdSuffix);
-		return result;
-	}
+        try {
+            //We've seen issues with these caches get stuck out of date, so we'll have to
+            //force them to refresh before each read. This slows down the method as it
+            //blocks on a Zookeeper query, however at the moment only the cleanup thread
+            //uses this and that isn't particularly time-sensitive.
+            switchCache.rebuild();
+        } catch (Exception e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
 
-	/*
-	 * IFloodlightModule
-	 */
-	
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-		Collection<Class<? extends IFloodlightService>> l = 
-				new ArrayList<Class<? extends IFloodlightService>>();
-		l.add(IControllerRegistryService.class);
-		return l;
-	}
-	
-	@Override
-	public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
-		Map<Class<? extends IFloodlightService>, IFloodlightService> m = 
-				new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
-		m.put(IControllerRegistryService.class,  this);
-		return m;
-	}
-	
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
-		Collection<Class<? extends IFloodlightService>> l =
+        List<ChildData> sortedData = new ArrayList<ChildData>(switchCache.getCurrentData());
+
+        Collections.sort(
+                sortedData,
+                new Comparator<ChildData>() {
+                    private String getSequenceNumber(String path) {
+                        return path.substring(path.lastIndexOf('-') + 1);
+                    }
+
+                    @Override
+                    public int compare(ChildData lhs, ChildData rhs) {
+                        return getSequenceNumber(lhs.getPath()).
+                                compareTo(getSequenceNumber(rhs.getPath()));
+                    }
+                }
+        );
+
+        if (sortedData.size() == 0) {
+            return null;
+        }
+
+        return new String(sortedData.get(0).getData(), Charsets.UTF_8);
+    }
+
+    @Override
+    public Collection<Long> getSwitchesControlledByController(String controllerId) {
+        //TODO remove this if not needed
+        throw new RuntimeException("Not yet implemented");
+    }
+
+
+    //TODO what should happen when there's no ZK connection? Currently we just return
+    //the cache but this may lead to false impressions - i.e. we don't actually know
+    //what's in ZK so we shouldn't say we do
+    @Override
+    public Map<String, List<ControllerRegistryEntry>> getAllSwitches() {
+        Map<String, List<ControllerRegistryEntry>> data =
+                new HashMap<String, List<ControllerRegistryEntry>>();
+
+        for (Map.Entry<String, PathChildrenCache> entry : switchPathCaches.entrySet()) {
+            List<ControllerRegistryEntry> contendingControllers =
+                    new ArrayList<ControllerRegistryEntry>();
+
+            if (entry.getValue().getCurrentData().size() < 1) {
+                //TODO prevent even having the PathChildrenCache in this case
+                //log.info("Switch entry with no leader elections: {}", entry.getKey());
+                continue;
+            }
+
+            for (ChildData d : entry.getValue().getCurrentData()) {
+
+                String controllerId = new String(d.getData(), Charsets.UTF_8);
+
+                String[] splitted = d.getPath().split("-");
+                int sequenceNumber = Integer.parseInt(splitted[splitted.length - 1]);
+
+                contendingControllers.add(new ControllerRegistryEntry(controllerId, sequenceNumber));
+            }
+
+            Collections.sort(contendingControllers);
+            data.put(entry.getKey(), contendingControllers);
+        }
+        return data;
+    }
+
+    public IdBlock allocateUniqueIdBlock(long range) {
+        try {
+            AtomicValue<Long> result = null;
+            do {
+                result = distributedIdCounter.add(range);
+            } while (result == null || !result.succeeded());
+
+            return new IdBlock(result.preValue(), result.postValue() - 1, range);
+        } catch (Exception e) {
+            log.error("Error allocating ID block");
+        }
+        return null;
+    }
+
+    /**
+     * Returns a block of IDs which are unique and unused.
+     * Range of IDs is fixed size and is assigned incrementally as this method called.
+     * Since the range of IDs is managed by Zookeeper in distributed way, this method may block when
+     * requests come up simultaneously.
+     */
+    @Override
+    public IdBlock allocateUniqueIdBlock() {
+        return allocateUniqueIdBlock(ID_BLOCK_SIZE);
+    }
+
+    /**
+     * Get a globally unique ID.
+     *
+     * @return a globally unique ID.
+     */
+    @Override
+    public synchronized long getNextUniqueId() {
+        //
+        // Generate the next Unique ID.
+        //
+        // TODO: For now, the higher 32 bits are random, and
+        // the lower 32 bits are sequential.
+        // The implementation must be updated to use the Zookeeper
+        // to allocate the higher 32 bits (globally unique).
+        //
+        if ((nextUniqueIdSuffix & 0xffffffffL) == 0xffffffffL) {
+            nextUniqueIdPrefix = randomGenerator.nextInt();
+            nextUniqueIdSuffix = 0;
+        } else {
+            nextUniqueIdSuffix++;
+        }
+        long result = (long) nextUniqueIdPrefix << 32;
+        result = result | (0xffffffffL & nextUniqueIdSuffix);
+        return result;
+    }
+
+    /*
+     * IFloodlightModule
+     */
+
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleServices() {
+        Collection<Class<? extends IFloodlightService>> l =
                 new ArrayList<Class<? extends IFloodlightService>>();
-		l.add(IFloodlightProviderService.class);
-		l.add(IRestApiService.class);
-		return l;
-	}
-	
-	//TODO currently blocks startup when it can't get a Zookeeper connection.
-	//Do we support starting up with no Zookeeper connection?
-	@Override
-	public void init (FloodlightModuleContext context) throws FloodlightModuleException {
-		log.info("Initialising the Zookeeper Registry - Zookeeper connection required");
-		
-		//Read the Zookeeper connection string from the config
-		Map<String, String> configParams = context.getConfigParams(this);
-		String connectionString = configParams.get("connectionString");
-		if (connectionString != null){
-			this.connectionString = connectionString;
-		}
-		log.info("Setting Zookeeper connection string to {}", this.connectionString);
+        l.add(IControllerRegistryService.class);
+        return l;
+    }
 
-		//
-		// Initialize the Unique ID generator
-		// TODO: This must be replaced by Zookeeper-based allocation
-		//
-		nextUniqueIdPrefix = randomGenerator.nextInt();
+    @Override
+    public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
+        Map<Class<? extends IFloodlightService>, IFloodlightService> m =
+                new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
+        m.put(IControllerRegistryService.class, this);
+        return m;
+    }
 
-		restApi = context.getServiceImpl(IRestApiService.class);
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
+        Collection<Class<? extends IFloodlightService>> l =
+                new ArrayList<Class<? extends IFloodlightService>>();
+        l.add(IFloodlightProviderService.class);
+        l.add(IRestApiService.class);
+        return l;
+    }
 
-		switches = new ConcurrentHashMap<String, SwitchLeadershipData>();
-		//switchPathCaches = new HashMap<String, PathChildrenCache>();
-		switchPathCaches = new ConcurrentHashMap<String, PathChildrenCache>();
-		
-		RetryPolicy retryPolicy = new ExponentialBackoffRetry(1000, 3);
-		client = CuratorFrameworkFactory.newClient(this.connectionString, 
-				sessionTimeout, connectionTimeout, retryPolicy);
-		
-		client.start();
-		client = client.usingNamespace(namespace);
+    //TODO currently blocks startup when it can't get a Zookeeper connection.
+    //Do we support starting up with no Zookeeper connection?
+    @Override
+    public void init(FloodlightModuleContext context) throws FloodlightModuleException {
+        log.info("Initialising the Zookeeper Registry - Zookeeper connection required");
 
-		distributedIdCounter = new DistributedAtomicLong(
-				client, 
-				ID_COUNTER_PATH, 
-				new RetryOneTime(100));
-		
-		switchCache = new PathChildrenCache(client, switchLatchesPath, true);
-		switchCache.getListenable().addListener(switchPathCacheListener);
-		
-		//Build the service discovery object
-	    serviceDiscovery = ServiceDiscoveryBuilder.builder(ControllerService.class)
-	            .client(client).basePath(SERVICES_PATH).build();
-	    
-	    //We read the list of services very frequently (GUI periodically queries them)
-	    //so we'll cache them to cut down on Zookeeper queries.
-	    serviceCache = serviceDiscovery.serviceCacheBuilder()
-				.name(CONTROLLER_SERVICE_NAME).build();
-	    
-	    
-		try {
-			serviceDiscovery.start();
-			serviceCache.start();
-			
-			//Don't prime the cache, we want a notification for each child node in the path
-			switchCache.start(StartMode.NORMAL);
-		} catch (Exception e) {
-			throw new FloodlightModuleException("Error initialising ZookeeperRegistry: " 
-					+ e.getMessage());
-		}
-		
-		eventThreadExecutorService = Executors.newSingleThreadExecutor();
-		eventThreadExecutorService.execute(
-				new Runnable() {
-					@Override
-					public void run(){
-						dispatchEvents();
-					}
-				});
-	}
+        //Read the Zookeeper connection string from the config
+        Map<String, String> configParams = context.getConfigParams(this);
+        String connectionString = configParams.get("connectionString");
+        if (connectionString != null) {
+            this.connectionString = connectionString;
+        }
+        log.info("Setting Zookeeper connection string to {}", this.connectionString);
 
-	@Override
-	public void startUp (FloodlightModuleContext context) {
-		//
-		// Cluster Leader election setup.
-		// NOTE: We have to do it here, because during the init stage
-		// we don't know the Controller ID.
-		//
-		if (controllerId == null) {
-		    log.error("Error on startup: unknown ControllerId");
-		}
-		clusterLeaderLatch = new LeaderLatch(client,
-						     CLUSTER_LEADER_PATH,
-						     controllerId);
-		clusterLeaderListener = new ClusterLeaderListener(clusterLeaderLatch);
-		clusterLeaderLatch.addListener(clusterLeaderListener);
-		try {
-			clusterLeaderLatch.start();
-		} catch (Exception e) {
-		    log.error("Error on startup starting the cluster leader election: {}", e.getMessage());
-		}
+        //
+        // Initialize the Unique ID generator
+        // TODO: This must be replaced by Zookeeper-based allocation
+        //
+        nextUniqueIdPrefix = randomGenerator.nextInt();
 
-		// Keep trying until there is a cluster leader
-		do {
-			try {
-				Participant leader = clusterLeaderLatch.getLeader();
-				if (! leader.getId().isEmpty())
-					break;
-				Thread.sleep(CLUSTER_LEADER_ELECTION_RETRY_MS);
-			} catch (Exception e) {
-				log.error("Error on startup waiting for cluster leader election: {}", e.getMessage());
-			}
-		} while (true);
+        restApi = context.getServiceImpl(IRestApiService.class);
 
-		restApi.addRestletRoutable(new RegistryWebRoutable());
-	}
+        switches = new ConcurrentHashMap<String, SwitchLeadershipData>();
+        //switchPathCaches = new HashMap<String, PathChildrenCache>();
+        switchPathCaches = new ConcurrentHashMap<String, PathChildrenCache>();
+
+        RetryPolicy retryPolicy = new ExponentialBackoffRetry(1000, 3);
+        client = CuratorFrameworkFactory.newClient(this.connectionString,
+                sessionTimeout, connectionTimeout, retryPolicy);
+
+        client.start();
+        client = client.usingNamespace(namespace);
+
+        distributedIdCounter = new DistributedAtomicLong(
+                client,
+                ID_COUNTER_PATH,
+                new RetryOneTime(100));
+
+        switchCache = new PathChildrenCache(client, switchLatchesPath, true);
+        switchCache.getListenable().addListener(switchPathCacheListener);
+
+        //Build the service discovery object
+        serviceDiscovery = ServiceDiscoveryBuilder.builder(ControllerService.class)
+                .client(client).basePath(SERVICES_PATH).build();
+
+        //We read the list of services very frequently (GUI periodically queries them)
+        //so we'll cache them to cut down on Zookeeper queries.
+        serviceCache = serviceDiscovery.serviceCacheBuilder()
+                .name(CONTROLLER_SERVICE_NAME).build();
+
+
+        try {
+            serviceDiscovery.start();
+            serviceCache.start();
+
+            //Don't prime the cache, we want a notification for each child node in the path
+            switchCache.start(StartMode.NORMAL);
+        } catch (Exception e) {
+            throw new FloodlightModuleException("Error initialising ZookeeperRegistry: "
+                    + e.getMessage());
+        }
+
+        eventThreadExecutorService = Executors.newSingleThreadExecutor();
+        eventThreadExecutorService.execute(
+                new Runnable() {
+                    @Override
+                    public void run() {
+                        dispatchEvents();
+                    }
+                });
+    }
+
+    @Override
+    public void startUp(FloodlightModuleContext context) {
+        //
+        // Cluster Leader election setup.
+        // NOTE: We have to do it here, because during the init stage
+        // we don't know the Controller ID.
+        //
+        if (controllerId == null) {
+            log.error("Error on startup: unknown ControllerId");
+        }
+        clusterLeaderLatch = new LeaderLatch(client,
+                CLUSTER_LEADER_PATH,
+                controllerId);
+        clusterLeaderListener = new ClusterLeaderListener(clusterLeaderLatch);
+        clusterLeaderLatch.addListener(clusterLeaderListener);
+        try {
+            clusterLeaderLatch.start();
+        } catch (Exception e) {
+            log.error("Error on startup starting the cluster leader election: {}", e.getMessage());
+        }
+
+        // Keep trying until there is a cluster leader
+        do {
+            try {
+                Participant leader = clusterLeaderLatch.getLeader();
+                if (!leader.getId().isEmpty())
+                    break;
+                Thread.sleep(CLUSTER_LEADER_ELECTION_RETRY_MS);
+            } catch (Exception e) {
+                log.error("Error on startup waiting for cluster leader election: {}", e.getMessage());
+            }
+        } while (true);
+
+        restApi.addRestletRoutable(new RegistryWebRoutable());
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/registry/web/ControllerRegistryResource.java b/src/main/java/net/onrc/onos/core/registry/web/ControllerRegistryResource.java
index 94e7e62..ee2b5f4 100644
--- a/src/main/java/net/onrc/onos/core/registry/web/ControllerRegistryResource.java
+++ b/src/main/java/net/onrc/onos/core/registry/web/ControllerRegistryResource.java
@@ -13,26 +13,26 @@
 
 public class ControllerRegistryResource extends ServerResource {
 
-	protected final static Logger log = LoggerFactory.getLogger(ControllerRegistryResource.class);
+    protected final static Logger log = LoggerFactory.getLogger(ControllerRegistryResource.class);
 
-	@Get("json")
-	public Collection<String> getControllers() {
-		IControllerRegistryService registry = 
-				(IControllerRegistryService) getContext().getAttributes().
-				get(IControllerRegistryService.class.getCanonicalName());
-		
-		Collection<String> controllers = null;
-		try {
-			controllers = registry.getAllControllers();
-		} catch (RegistryException e) {
-			log.warn("Error retrieving controller list: {}", e.getMessage());
-		}
-		
-		if (controllers == null){
-			controllers = new ArrayList<String>();
-		}
-		
-		return controllers;
-	}
-	
+    @Get("json")
+    public Collection<String> getControllers() {
+        IControllerRegistryService registry =
+                (IControllerRegistryService) getContext().getAttributes().
+                        get(IControllerRegistryService.class.getCanonicalName());
+
+        Collection<String> controllers = null;
+        try {
+            controllers = registry.getAllControllers();
+        } catch (RegistryException e) {
+            log.warn("Error retrieving controller list: {}", e.getMessage());
+        }
+
+        if (controllers == null) {
+            controllers = new ArrayList<String>();
+        }
+
+        return controllers;
+    }
+
 }
diff --git a/src/main/java/net/onrc/onos/core/registry/web/RegistryWebRoutable.java b/src/main/java/net/onrc/onos/core/registry/web/RegistryWebRoutable.java
index e6bf552..fc32c96 100644
--- a/src/main/java/net/onrc/onos/core/registry/web/RegistryWebRoutable.java
+++ b/src/main/java/net/onrc/onos/core/registry/web/RegistryWebRoutable.java
@@ -8,17 +8,17 @@
 
 public class RegistryWebRoutable implements RestletRoutable {
 
-	@Override
-	public Restlet getRestlet(Context context) {
-		Router router = new Router(context);
-		router.attach("/controllers/json", ControllerRegistryResource.class);
-		router.attach("/switches/json", SwitchRegistryResource.class);
-		return router;
-	}
+    @Override
+    public Restlet getRestlet(Context context) {
+        Router router = new Router(context);
+        router.attach("/controllers/json", ControllerRegistryResource.class);
+        router.attach("/switches/json", SwitchRegistryResource.class);
+        return router;
+    }
 
-	@Override
-	public String basePath() {
-		return "/wm/onos/registry";
-	}
+    @Override
+    public String basePath() {
+        return "/wm/onos/registry";
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/registry/web/SwitchRegistryResource.java b/src/main/java/net/onrc/onos/core/registry/web/SwitchRegistryResource.java
index 60c4798..1db2560 100644
--- a/src/main/java/net/onrc/onos/core/registry/web/SwitchRegistryResource.java
+++ b/src/main/java/net/onrc/onos/core/registry/web/SwitchRegistryResource.java
@@ -11,20 +11,20 @@
 import org.restlet.resource.ServerResource;
 
 public class SwitchRegistryResource extends ServerResource {
-	
-	@Get("json")
-	public Map<String, List<ControllerRegistryEntry>> getAllControllers(){
-		IControllerRegistryService registry = 
-				(IControllerRegistryService) getContext().getAttributes().
-				get(IControllerRegistryService.class.getCanonicalName());
-		
-		Map<String, List<ControllerRegistryEntry>> switches = null;
-		switches = registry.getAllSwitches();
-		
-		if (switches == null){
-			switches = new HashMap<String, List<ControllerRegistryEntry>>();
-		}
-		
-		return switches;
-	}
+
+    @Get("json")
+    public Map<String, List<ControllerRegistryEntry>> getAllControllers() {
+        IControllerRegistryService registry =
+                (IControllerRegistryService) getContext().getAttributes().
+                        get(IControllerRegistryService.class.getCanonicalName());
+
+        Map<String, List<ControllerRegistryEntry>> switches = null;
+        switches = registry.getAllSwitches();
+
+        if (switches == null) {
+            switches = new HashMap<String, List<ControllerRegistryEntry>>();
+        }
+
+        return switches;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/Device.java b/src/main/java/net/onrc/onos/core/topology/Device.java
index 25a27be..48035b3 100644
--- a/src/main/java/net/onrc/onos/core/topology/Device.java
+++ b/src/main/java/net/onrc/onos/core/topology/Device.java
@@ -7,12 +7,11 @@
 
 /**
  * Interface of Device Object exposed to the "NB" read-only Topology.
- *
+ * <p/>
  * TODO What a Device Object represent is unclear at the moment.
- *
+ * <p/>
  * Everything returned by these interfaces must be either Unmodifiable view,
  * immutable object, or a copy of the original "SB" In-memory Topology.
- *
  */
 public interface Device {
     /**
@@ -31,7 +30,7 @@
 
     /**
      * Get the device attachment points.
-     *
+     * <p/>
      * Add requirement for Iteration order? Latest observed port first.
      *
      * @return the device attachment points.
@@ -40,7 +39,7 @@
 
     /**
      * Get the device last seen time.
-     *
+     * <p/>
      * TODO: what is the time definition?
      *
      * @return the device last seen time.
diff --git a/src/main/java/net/onrc/onos/core/topology/DeviceEvent.java b/src/main/java/net/onrc/onos/core/topology/DeviceEvent.java
index f7331a0..48d50e4 100644
--- a/src/main/java/net/onrc/onos/core/topology/DeviceEvent.java
+++ b/src/main/java/net/onrc/onos/core/topology/DeviceEvent.java
@@ -12,16 +12,15 @@
 
 /**
  * Self-contained Device event(s) Object
- *
+ * <p/>
  * Device event differ from other events.
  * Device Event represent add/remove of attachmentPoint or ipAddress.
  * Not add/remove of the DeviceObject itself.
- *
+ * <p/>
  * Multiple attachmentPoints can be specified to batch events into 1 object.
  * Each should be treated as independent events.
- *
+ * <p/>
  * TODO: We probably want common base class/interface for Self-Contained Event Object
- *
  */
 public class DeviceEvent {
     private final MACAddress mac;
@@ -34,24 +33,24 @@
      */
     @Deprecated
     public DeviceEvent() {
-	mac = null;
+        mac = null;
     }
 
     public DeviceEvent(MACAddress mac) {
-	if (mac == null) {
-	    throw new IllegalArgumentException("Device mac cannot be null");
-	}
-	this.mac = mac;
-	this.attachmentPoints = new LinkedList<>();
-	this.ipAddresses = new HashSet<>();
+        if (mac == null) {
+            throw new IllegalArgumentException("Device mac cannot be null");
+        }
+        this.mac = mac;
+        this.attachmentPoints = new LinkedList<>();
+        this.ipAddresses = new HashSet<>();
     }
 
     public MACAddress getMac() {
-	return mac;
+        return mac;
     }
 
     public List<SwitchPort> getAttachmentPoints() {
-	return attachmentPoints;
+        return attachmentPoints;
     }
 
     public Set<InetAddress> getIpAddresses() {
@@ -59,46 +58,46 @@
     }
 
     public void setAttachmentPoints(List<SwitchPort> attachmentPoints) {
-	this.attachmentPoints = attachmentPoints;
+        this.attachmentPoints = attachmentPoints;
     }
 
     public void addAttachmentPoint(SwitchPort attachmentPoint) {
-	// may need to maintain uniqness
-	this.attachmentPoints.add(0, attachmentPoint);
+        // may need to maintain uniqness
+        this.attachmentPoints.add(0, attachmentPoint);
     }
 
 
     public boolean addIpAddress(InetAddress addr) {
-	return this.ipAddresses.add(addr);
+        return this.ipAddresses.add(addr);
     }
 
     public boolean removeIpAddress(InetAddress addr) {
-	return this.ipAddresses.remove(addr);
+        return this.ipAddresses.remove(addr);
     }
 
     @Override
     public String toString() {
-	return "[DeviceEvent " + mac + " attachmentPoints:" + attachmentPoints + " ipAddr:" + ipAddresses + "]";
+        return "[DeviceEvent " + mac + " attachmentPoints:" + attachmentPoints + " ipAddr:" + ipAddresses + "]";
     }
 
     // Assuming mac is unique cluster-wide
     public static ByteBuffer getDeviceID(final byte[] mac) {
-	return (ByteBuffer) ByteBuffer.allocate(2 + mac.length).putChar('D').put(mac).flip();
+        return (ByteBuffer) ByteBuffer.allocate(2 + mac.length).putChar('D').put(mac).flip();
     }
 
     public byte[] getID() {
-	return getDeviceID(mac.toBytes()).array();
+        return getDeviceID(mac.toBytes()).array();
     }
 
     public ByteBuffer getIDasByteBuffer() {
-	return getDeviceID(mac.toBytes());
+        return getDeviceID(mac.toBytes());
     }
 
-	public long getLastSeenTime() {
-		return lastSeenTime;
-	}
+    public long getLastSeenTime() {
+        return lastSeenTime;
+    }
 
-	public void setLastSeenTime(long lastSeenTime) {
-		this.lastSeenTime = lastSeenTime;
-	}
+    public void setLastSeenTime(long lastSeenTime) {
+        this.lastSeenTime = lastSeenTime;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/DeviceImpl.java b/src/main/java/net/onrc/onos/core/topology/DeviceImpl.java
index 5b96e08..6a4f16b 100644
--- a/src/main/java/net/onrc/onos/core/topology/DeviceImpl.java
+++ b/src/main/java/net/onrc/onos/core/topology/DeviceImpl.java
@@ -20,71 +20,75 @@
     private long lastSeenTime;
 
     public DeviceImpl(NetworkGraph graph, MACAddress mac) {
-		super(graph);
-		this.macAddr = mac;
-		this.attachmentPoints = new LinkedList<>();
-		this.ipAddresses = new HashSet<>();
+        super(graph);
+        this.macAddr = mac;
+        this.attachmentPoints = new LinkedList<>();
+        this.ipAddresses = new HashSet<>();
     }
 
     @Override
     public MACAddress getMacAddress() {
-    	return this.macAddr;
+        return this.macAddr;
     }
 
     @Override
     public Collection<InetAddress> getIpAddress() {
-    	return Collections.unmodifiableSet(ipAddresses);
+        return Collections.unmodifiableSet(ipAddresses);
     }
 
     @Override
     public Iterable<Port> getAttachmentPoints() {
-    	return Collections.unmodifiableList(this.attachmentPoints);
+        return Collections.unmodifiableList(this.attachmentPoints);
     }
 
     @Override
     public long getLastSeenTime() {
-    	return lastSeenTime;
+        return lastSeenTime;
     }
 
     @Override
     public String toString() {
-    	return macAddr.toString();
+        return macAddr.toString();
     }
-    
+
     void setLastSeenTime(long lastSeenTime) {
-    	this.lastSeenTime = lastSeenTime;
+        this.lastSeenTime = lastSeenTime;
     }
 
     /**
      * Only {@link TopologyManager} should use this method
+     *
      * @param p
      */
     void addAttachmentPoint(Port p) {
-    	this.attachmentPoints.remove(p);
-    	this.attachmentPoints.addFirst(p);
+        this.attachmentPoints.remove(p);
+        this.attachmentPoints.addFirst(p);
     }
 
     /**
      * Only {@link TopologyManager} should use this method
+     *
      * @param p
      */
     boolean removeAttachmentPoint(Port p) {
-    	return this.attachmentPoints.remove(p);
+        return this.attachmentPoints.remove(p);
     }
 
     /**
      * Only {@link TopologyManager} should use this method
+     *
      * @param p
      */
     boolean addIpAddress(InetAddress addr) {
-    	return this.ipAddresses.add(addr);
+        return this.ipAddresses.add(addr);
     }
 
     /**
      * Only {@link TopologyManager} should use this method
+     *
      * @param p
      */
     boolean removeIpAddress(InetAddress addr) {
-    	return this.ipAddresses.remove(addr);
+        return this.ipAddresses.remove(addr);
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/INetworkGraphListener.java b/src/main/java/net/onrc/onos/core/topology/INetworkGraphListener.java
index c64b126..9e53222 100644
--- a/src/main/java/net/onrc/onos/core/topology/INetworkGraphListener.java
+++ b/src/main/java/net/onrc/onos/core/topology/INetworkGraphListener.java
@@ -9,36 +9,36 @@
 public interface INetworkGraphListener {
     /**
      * Network Graph events.
-     *
+     * <p/>
      * The recommended ordering rules for applying/processing the events is:
-     *    (a) Process "added" events before "removed" events.
-     *    (b) The ordering of the "added" events should be:
-     *          addedSwitchEvents, addedPortEvents, addedLinkEvents,
-     *          addedDeviceEvents
-     *        The above ordering guarantees that adding a port for example
-     *        will be processed after the corresponding switch itself is added.
-     *    (c) The ordering of the "removed" events should be:
-     *          removedDeviceEvents, removedLinkEvents, removedPortEvents,
-     *          removedSwitchEvents
-     *      The above ordering guarantees that removing a port for example
-     *      will be processed before the corresponding switch itself is
-     *      removed.
+     * (a) Process "added" events before "removed" events.
+     * (b) The ordering of the "added" events should be:
+     * addedSwitchEvents, addedPortEvents, addedLinkEvents,
+     * addedDeviceEvents
+     * The above ordering guarantees that adding a port for example
+     * will be processed after the corresponding switch itself is added.
+     * (c) The ordering of the "removed" events should be:
+     * removedDeviceEvents, removedLinkEvents, removedPortEvents,
+     * removedSwitchEvents
+     * The above ordering guarantees that removing a port for example
+     * will be processed before the corresponding switch itself is
+     * removed.
      *
-     * @param addedSwitchEvents the Added Switch Events.
+     * @param addedSwitchEvents   the Added Switch Events.
      * @param removedSwitchEvents the Removed Switch Events.
-     * @param addedPortEvents the Added Port Events.
-     * @param removedPortEvents the Removed Port Events.
-     * @param addedLinkEvents the Added Link Events.
-     * @param removedLinkEvents the Removed Link Events.
-     * @param addedDeviceEvents the Added Device Events.
+     * @param addedPortEvents     the Added Port Events.
+     * @param removedPortEvents   the Removed Port Events.
+     * @param addedLinkEvents     the Added Link Events.
+     * @param removedLinkEvents   the Removed Link Events.
+     * @param addedDeviceEvents   the Added Device Events.
      * @param removedDeviceEvents the Removed Device Events.
      */
     public void networkGraphEvents(Collection<SwitchEvent> addedSwitchEvents,
-				   Collection<SwitchEvent> removedSwitchEvents,
-				   Collection<PortEvent> addedPortEvents,
-				   Collection<PortEvent> removedPortEvents,
-				   Collection<LinkEvent> addedLinkEvents,
-				   Collection<LinkEvent> removedLinkEvents,
-				   Collection<DeviceEvent> addedDeviceEvents,
-				   Collection<DeviceEvent> removedDeviceEvents);
+                                   Collection<SwitchEvent> removedSwitchEvents,
+                                   Collection<PortEvent> addedPortEvents,
+                                   Collection<PortEvent> removedPortEvents,
+                                   Collection<LinkEvent> addedLinkEvents,
+                                   Collection<LinkEvent> removedLinkEvents,
+                                   Collection<DeviceEvent> addedDeviceEvents,
+                                   Collection<DeviceEvent> removedDeviceEvents);
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/INetworkGraphService.java b/src/main/java/net/onrc/onos/core/topology/INetworkGraphService.java
index 9d4cb3a..18eb785 100644
--- a/src/main/java/net/onrc/onos/core/topology/INetworkGraphService.java
+++ b/src/main/java/net/onrc/onos/core/topology/INetworkGraphService.java
@@ -6,13 +6,15 @@
  * Interface for providing the Network Graph Service to other modules.
  */
 public interface INetworkGraphService extends IFloodlightService {
-	/**
-	 * Allows a module to get a reference to the global network graph object.
-	 * @return
-	 */
+    /**
+     * Allows a module to get a reference to the global network graph object.
+     *
+     * @return
+     */
     public NetworkGraph getNetworkGraph();
 
     public void registerNetworkGraphListener(INetworkGraphListener listener);
+
     public void deregisterNetworkGraphListener(INetworkGraphListener listener);
 
     /**
@@ -20,6 +22,7 @@
      * the network graph.
      * TODO Figure out how to hide the southbound interface from
      * applications/modules that shouldn't touch it
+     *
      * @return
      */
     public NetworkGraphDiscoveryInterface getNetworkGraphDiscoveryInterface();
diff --git a/src/main/java/net/onrc/onos/core/topology/Link.java b/src/main/java/net/onrc/onos/core/topology/Link.java
index f73bccf..2acf7dc 100644
--- a/src/main/java/net/onrc/onos/core/topology/Link.java
+++ b/src/main/java/net/onrc/onos/core/topology/Link.java
@@ -2,10 +2,9 @@
 
 /**
  * Interface of Link Object exposed to the "NB" read-only Topology.
- *
+ * <p/>
  * Everything returned by these interfaces must be either Unmodifiable view,
  * immutable object, or a copy of the original "SB" In-memory Topology.
- *
  */
 public interface Link {
     /**
@@ -38,7 +37,7 @@
 
     /**
      * Get the last seen time for the link.
-     *
+     * <p/>
      * TODO: Not implemented yet.
      * TODO: what is the time definition?
      *
@@ -48,7 +47,7 @@
 
     /**
      * Get the link cost.
-     *
+     * <p/>
      * TODO: What is the unit?
      *
      * @param return the link cost.
@@ -57,7 +56,7 @@
 
     /**
      * Get the link capacity.
-     *
+     * <p/>
      * TODO: What is the unit?
      *
      * @return the link capacity.
diff --git a/src/main/java/net/onrc/onos/core/topology/LinkEvent.java b/src/main/java/net/onrc/onos/core/topology/LinkEvent.java
index bf43155..7434ad9 100644
--- a/src/main/java/net/onrc/onos/core/topology/LinkEvent.java
+++ b/src/main/java/net/onrc/onos/core/topology/LinkEvent.java
@@ -6,9 +6,8 @@
 
 /**
  * Self-contained Link event Object
- *
+ * <p/>
  * TODO: We probably want common base class/interface for Self-Contained Event Object
- *
  */
 public class LinkEvent {
     protected final SwitchPort src;
@@ -19,83 +18,83 @@
      */
     @Deprecated
     public LinkEvent() {
-	src = null;
-	dst = null;
+        src = null;
+        dst = null;
     }
 
     public LinkEvent(Long src_dpid, Long src_port_no, Long dst_dpid,
-	    Long dst_port_no) {
-	src = new SwitchPort(src_dpid, src_port_no);
-	dst = new SwitchPort(dst_dpid, dst_port_no);
+                     Long dst_port_no) {
+        src = new SwitchPort(src_dpid, src_port_no);
+        dst = new SwitchPort(dst_dpid, dst_port_no);
     }
 
     public LinkEvent(Link link) {
-	src = new SwitchPort(link.getSrcSwitch().getDpid(),
-		link.getSrcPort().getNumber());
-	dst = new SwitchPort(link.getDstSwitch().getDpid(),
-		link.getDstPort().getNumber());
+        src = new SwitchPort(link.getSrcSwitch().getDpid(),
+                link.getSrcPort().getNumber());
+        dst = new SwitchPort(link.getDstSwitch().getDpid(),
+                link.getDstPort().getNumber());
     }
 
     public SwitchPort getSrc() {
-	return src;
+        return src;
     }
 
     public SwitchPort getDst() {
-	return dst;
+        return dst;
     }
 
     @Override
     public String toString() {
-	return "[LinkEvent " + src + "->" + dst + "]";
+        return "[LinkEvent " + src + "->" + dst + "]";
     }
 
     public static final int LINKID_BYTES = 2 + PortEvent.PORTID_BYTES * 2;
 
     public static ByteBuffer getLinkID(Long src_dpid, Long src_port_no,
-	    Long dst_dpid, Long dst_port_no) {
-	return (ByteBuffer) ByteBuffer.allocate(LinkEvent.LINKID_BYTES).putChar('L')
-		.put(PortEvent.getPortID(src_dpid, src_port_no))
-		.put(PortEvent.getPortID(dst_dpid, dst_port_no)).flip();
+                                       Long dst_dpid, Long dst_port_no) {
+        return (ByteBuffer) ByteBuffer.allocate(LinkEvent.LINKID_BYTES).putChar('L')
+                .put(PortEvent.getPortID(src_dpid, src_port_no))
+                .put(PortEvent.getPortID(dst_dpid, dst_port_no)).flip();
     }
 
     public byte[] getID() {
-	return getLinkID(src.getDpid(), src.getNumber(),
-		dst.getDpid(), dst.getNumber()).array();
+        return getLinkID(src.getDpid(), src.getNumber(),
+                dst.getDpid(), dst.getNumber()).array();
     }
 
     public ByteBuffer getIDasByteBuffer() {
-	return getLinkID(src.getDpid(), src.getNumber(),
-		dst.getDpid(), dst.getNumber());
+        return getLinkID(src.getDpid(), src.getNumber(),
+                dst.getDpid(), dst.getNumber());
     }
 
     @Override
     public int hashCode() {
-	final int prime = 31;
-	int result = 1;
-	result = prime * result + ((dst == null) ? 0 : dst.hashCode());
-	result = prime * result + ((src == null) ? 0 : src.hashCode());
-	return result;
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((dst == null) ? 0 : dst.hashCode());
+        result = prime * result + ((src == null) ? 0 : src.hashCode());
+        return result;
     }
 
     @Override
     public boolean equals(Object obj) {
-	if (this == obj)
-	    return true;
-	if (obj == null)
-	    return false;
-	if (getClass() != obj.getClass())
-	    return false;
-	LinkEvent other = (LinkEvent) obj;
-	if (dst == null) {
-	    if (other.dst != null)
-		return false;
-	} else if (!dst.equals(other.dst))
-	    return false;
-	if (src == null) {
-	    if (other.src != null)
-		return false;
-	} else if (!src.equals(other.src))
-	    return false;
-	return true;
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        LinkEvent other = (LinkEvent) obj;
+        if (dst == null) {
+            if (other.dst != null)
+                return false;
+        } else if (!dst.equals(other.dst))
+            return false;
+        if (src == null) {
+            if (other.src != null)
+                return false;
+        } else if (!src.equals(other.src))
+            return false;
+        return true;
     }
 }
\ No newline at end of file
diff --git a/src/main/java/net/onrc/onos/core/topology/LinkImpl.java b/src/main/java/net/onrc/onos/core/topology/LinkImpl.java
index d95d4fd..4333e38 100644
--- a/src/main/java/net/onrc/onos/core/topology/LinkImpl.java
+++ b/src/main/java/net/onrc/onos/core/topology/LinkImpl.java
@@ -2,93 +2,94 @@
 
 /**
  * Link Object stored in In-memory Topology.
- *
+ * <p/>
  * TODO REMOVE following design memo: This object itself may hold the DBObject,
  * but this Object itself will not issue any read/write to the DataStore.
  */
 public class LinkImpl extends NetworkGraphObject implements Link {
-	protected Port srcPort;
-	protected Port dstPort;
+    protected Port srcPort;
+    protected Port dstPort;
 
-	protected static final Double DEFAULT_CAPACITY = Double.POSITIVE_INFINITY;
-	protected Double capacity = DEFAULT_CAPACITY;
+    protected static final Double DEFAULT_CAPACITY = Double.POSITIVE_INFINITY;
+    protected Double capacity = DEFAULT_CAPACITY;
 
-	protected static final int DEFAULT_COST = 1;
-	protected int cost = DEFAULT_COST;
+    protected static final int DEFAULT_COST = 1;
+    protected int cost = DEFAULT_COST;
 
-	/**
-	 * Constructor for when a link is read from the database and the Ports
-	 * already exist in the in-memory network graph.
-	 * @param graph
-	 * @param srcPort
-	 * @param dstPort
-	 */
-	public LinkImpl(NetworkGraph graph, Port srcPort, Port dstPort) {
-		super(graph);
-		this.srcPort = srcPort;
-		this.dstPort = dstPort;
-		setToPorts();
-	}
+    /**
+     * Constructor for when a link is read from the database and the Ports
+     * already exist in the in-memory network graph.
+     *
+     * @param graph
+     * @param srcPort
+     * @param dstPort
+     */
+    public LinkImpl(NetworkGraph graph, Port srcPort, Port dstPort) {
+        super(graph);
+        this.srcPort = srcPort;
+        this.dstPort = dstPort;
+        setToPorts();
+    }
 
-	@Override
-	public Switch getSrcSwitch() {
-		return srcPort.getSwitch();
-	}
+    @Override
+    public Switch getSrcSwitch() {
+        return srcPort.getSwitch();
+    }
 
-	@Override
-	public Port getSrcPort() {
-		return srcPort;
-	}
+    @Override
+    public Port getSrcPort() {
+        return srcPort;
+    }
 
-	@Override
-	public Switch getDstSwitch() {
-		return dstPort.getSwitch();
-	}
+    @Override
+    public Switch getDstSwitch() {
+        return dstPort.getSwitch();
+    }
 
-	@Override
-	public Port getDstPort() {
-		return dstPort;
-	}
+    @Override
+    public Port getDstPort() {
+        return dstPort;
+    }
 
-	protected void setToPorts() {
-		((PortImpl)srcPort).setOutgoingLink(this);
-		((PortImpl)dstPort).setIncomingLink(this);
-	}
+    protected void setToPorts() {
+        ((PortImpl) srcPort).setOutgoingLink(this);
+        ((PortImpl) dstPort).setIncomingLink(this);
+    }
 
-	protected void unsetFromPorts() {
-		((PortImpl)srcPort).setOutgoingLink(null);
-		((PortImpl)dstPort).setIncomingLink(null);
-	}
+    protected void unsetFromPorts() {
+        ((PortImpl) srcPort).setOutgoingLink(null);
+        ((PortImpl) dstPort).setIncomingLink(null);
+    }
 
-	@Override
-	public long getLastSeenTime() {
-		// TODO Auto-generated method stub
-		return 0;
-	}
+    @Override
+    public long getLastSeenTime() {
+        // TODO Auto-generated method stub
+        return 0;
+    }
 
-	@Override
-	public int getCost() {
-		return cost;
-	}
+    @Override
+    public int getCost() {
+        return cost;
+    }
 
-	public void setCost(int cost) {
-		this.cost = cost;
-	}
+    public void setCost(int cost) {
+        this.cost = cost;
+    }
 
-	@Override
-	public Double getCapacity() {
-		return capacity;
-	}
+    @Override
+    public Double getCapacity() {
+        return capacity;
+    }
 
-	public void setCapacity(Double capacity) {
-		this.capacity = capacity;
-	}
+    public void setCapacity(Double capacity) {
+        this.capacity = capacity;
+    }
 
-	@Override
-	public String toString() {
-		return String.format("%s --(cap:%f Mbps)--> %s",
-				getSrcPort().toString(),
-				getCapacity(),
-				getDstPort().toString());
-	}
+    @Override
+    public String toString() {
+        return String.format("%s --(cap:%f Mbps)--> %s",
+                getSrcPort().toString(),
+                getCapacity(),
+                getDstPort().toString());
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/NetworkGraph.java b/src/main/java/net/onrc/onos/core/topology/NetworkGraph.java
index 4e83263..3c583b4 100644
--- a/src/main/java/net/onrc/onos/core/topology/NetworkGraph.java
+++ b/src/main/java/net/onrc/onos/core/topology/NetworkGraph.java
@@ -28,7 +28,7 @@
     /**
      * Get the port on a switch.
      *
-     * @param dpid the switch DPID.
+     * @param dpid   the switch DPID.
      * @param number the switch port number.
      * @return the switch port if found, otherwise null.
      */
@@ -37,7 +37,7 @@
     /**
      * Get the outgoing link for a switch and a port.
      *
-     * @param dpid the switch DPID.
+     * @param dpid   the switch DPID.
      * @param number the switch port number.
      * @return the outgoing link if found, otherwise null.
      */
@@ -47,18 +47,18 @@
      * Get the outgoing link from a switch and a port to another switch and
      * a port.
      *
-     * @param srcDpid the source switch DPID.
+     * @param srcDpid   the source switch DPID.
      * @param srcNumber the source switch port number.
-     * @param dstDpid the destination switch DPID.
+     * @param dstDpid   the destination switch DPID.
      * @param dstNumber the destination switch port number.
      * @return the outgoing link if found, otherwise null.
      */
     public Link getLink(Long srcDpid, Long srcNumber, Long dstDpid,
-			Long dstNumber);
+                        Long dstNumber);
 
     /**
      * Get all links in the network.
-     *
+     * <p/>
      * TODO: Not clear if this method is needed. Remove if not used.
      *
      * @return all links in the network.
@@ -80,15 +80,15 @@
      * @return the network device for the MAC address if found, otherwise null.
      */
     public Device getDeviceByMac(MACAddress address);
-	
+
     /**
-     * Acquire a read lock on the entire topology. The topology will not 
-     * change while readers have the lock. Must be released using 
+     * Acquire a read lock on the entire topology. The topology will not
+     * change while readers have the lock. Must be released using
      * {@link releaseReadLock()}. This method will block until a read lock is
      * available.
      */
     public void acquireReadLock();
-	
+
     /**
      * Release the read lock on the topology.
      */
diff --git a/src/main/java/net/onrc/onos/core/topology/NetworkGraphDatastore.java b/src/main/java/net/onrc/onos/core/topology/NetworkGraphDatastore.java
index 8488297..488915f 100644
--- a/src/main/java/net/onrc/onos/core/topology/NetworkGraphDatastore.java
+++ b/src/main/java/net/onrc/onos/core/topology/NetworkGraphDatastore.java
@@ -26,203 +26,202 @@
  * mutate the graph. This class will maintain the invariants of the network
  * graph. The southbound discovery modules will use this interface to update
  * the network graph as they learn about the state of the network.
- *
+ * <p/>
  * Modification to the Network Map by this module will:
  * 1. Writes to Cluster-wide DataStore.
  * 2. Update ONOS instance In-memory Network Map.
  * 3. Send-out Notification. (TBD)
- *    (XXX: To update other instances In-memory Network Map,
- *          notification should be triggered here.
- *          But if we want to aggregate notification to minimize notification,
- *          It might be better for the caller to trigger notification.)
- *
+ * (XXX: To update other instances In-memory Network Map,
+ * notification should be triggered here.
+ * But if we want to aggregate notification to minimize notification,
+ * It might be better for the caller to trigger notification.)
  */
 public class NetworkGraphDatastore {
-	private static final Logger log = LoggerFactory.getLogger(NetworkGraphDatastore.class);
+    private static final Logger log = LoggerFactory.getLogger(NetworkGraphDatastore.class);
 
-	/**
-	 * Add a switch to the database.
-	 *
-	 * @param sw the switch to add.
-	 * @param portEvents the corresponding switch ports to add.
-	 * @return true on success, otherwise false.
-	 */
-	public boolean addSwitch(SwitchEvent sw,
-				 Collection<PortEvent> portEvents) {
-		log.debug("Adding switch {}", sw);
-		ArrayList<WriteOp> groupOp = new ArrayList<>();
+    /**
+     * Add a switch to the database.
+     *
+     * @param sw         the switch to add.
+     * @param portEvents the corresponding switch ports to add.
+     * @return true on success, otherwise false.
+     */
+    public boolean addSwitch(SwitchEvent sw,
+                             Collection<PortEvent> portEvents) {
+        log.debug("Adding switch {}", sw);
+        ArrayList<WriteOp> groupOp = new ArrayList<>();
 
-		KVSwitch rcSwitch = new KVSwitch(sw.getDpid());
-		rcSwitch.setStatus(KVSwitch.STATUS.ACTIVE);
+        KVSwitch rcSwitch = new KVSwitch(sw.getDpid());
+        rcSwitch.setStatus(KVSwitch.STATUS.ACTIVE);
 
-		IKVClient client = DataStoreClient.getClient();
+        IKVClient client = DataStoreClient.getClient();
 
-		// XXX Is ForceCreating Switch on DB OK here?
-		// If ForceCreating, who ever is calling this method needs
-		// to assure that DPID is unique cluster-wide, etc.
-		groupOp.add(rcSwitch.forceCreateOp(client));
+        // XXX Is ForceCreating Switch on DB OK here?
+        // If ForceCreating, who ever is calling this method needs
+        // to assure that DPID is unique cluster-wide, etc.
+        groupOp.add(rcSwitch.forceCreateOp(client));
 
-		for (PortEvent portEvent : portEvents) {
-			KVPort rcPort = new KVPort(sw.getDpid(), portEvent.getNumber());
-			rcPort.setStatus(KVPort.STATUS.ACTIVE);
+        for (PortEvent portEvent : portEvents) {
+            KVPort rcPort = new KVPort(sw.getDpid(), portEvent.getNumber());
+            rcPort.setStatus(KVPort.STATUS.ACTIVE);
 
-			groupOp.add(rcPort.forceCreateOp(client));
-		}
+            groupOp.add(rcPort.forceCreateOp(client));
+        }
 
-		boolean failed = KVObject.multiWrite(groupOp);
+        boolean failed = KVObject.multiWrite(groupOp);
 
-		if (failed) {
-		    log.error("Adding Switch {} and its ports failed.", sw.getDpid());
-		    for (WriteOp op : groupOp) {
-			log.debug("Operation:{} for {} - Result:{}", op.getOp(), op.getObject(), op.getStatus() );
+        if (failed) {
+            log.error("Adding Switch {} and its ports failed.", sw.getDpid());
+            for (WriteOp op : groupOp) {
+                log.debug("Operation:{} for {} - Result:{}", op.getOp(), op.getObject(), op.getStatus());
 
-			// If we changed the operation from ForceCreate to
-			// Conditional operation (Create/Update) then we should retry here.
-		    }
-		}
-		return !failed;
-	}
+                // If we changed the operation from ForceCreate to
+                // Conditional operation (Create/Update) then we should retry here.
+            }
+        }
+        return !failed;
+    }
 
-	/**
-	 * Update a switch as inactive in the database.
-	 *
-	 * @param sw the switch to update.
-	 * @param portEvents the corresponding switch ports to update.
-	 * @return true on success, otherwise false.
-	 */
-	public boolean deactivateSwitch(SwitchEvent sw,
-					Collection<PortEvent> portEvents) {
-		log.debug("Deactivating switch {}", sw);
-		KVSwitch rcSwitch = new KVSwitch(sw.getDpid());
+    /**
+     * Update a switch as inactive in the database.
+     *
+     * @param sw         the switch to update.
+     * @param portEvents the corresponding switch ports to update.
+     * @return true on success, otherwise false.
+     */
+    public boolean deactivateSwitch(SwitchEvent sw,
+                                    Collection<PortEvent> portEvents) {
+        log.debug("Deactivating switch {}", sw);
+        KVSwitch rcSwitch = new KVSwitch(sw.getDpid());
 
-		IKVClient client = DataStoreClient.getClient();
+        IKVClient client = DataStoreClient.getClient();
 
-		List<WriteOp> groupOp = new ArrayList<>();
-		rcSwitch.setStatus(KVSwitch.STATUS.INACTIVE);
+        List<WriteOp> groupOp = new ArrayList<>();
+        rcSwitch.setStatus(KVSwitch.STATUS.INACTIVE);
 
-		groupOp.add(rcSwitch.forceCreateOp(client));
+        groupOp.add(rcSwitch.forceCreateOp(client));
 
-		for (PortEvent portEvent : portEvents) {
-			KVPort rcPort = new KVPort(sw.getDpid(), portEvent.getNumber());
-			rcPort.setStatus(KVPort.STATUS.INACTIVE);
+        for (PortEvent portEvent : portEvents) {
+            KVPort rcPort = new KVPort(sw.getDpid(), portEvent.getNumber());
+            rcPort.setStatus(KVPort.STATUS.INACTIVE);
 
-			groupOp.add(rcPort.forceCreateOp(client));
-		}
+            groupOp.add(rcPort.forceCreateOp(client));
+        }
 
-		boolean failed = KVObject.multiWrite(groupOp);
+        boolean failed = KVObject.multiWrite(groupOp);
 
-		return !failed;
-	}
+        return !failed;
+    }
 
-	/**
-	 * Add a port to the database.
-	 *
-	 * @param port the port to add.
-	 * @return true on success, otherwise false.
-	 */
-	public boolean addPort(PortEvent port) {
-		log.debug("Adding port {}", port);
+    /**
+     * Add a port to the database.
+     *
+     * @param port the port to add.
+     * @return true on success, otherwise false.
+     */
+    public boolean addPort(PortEvent port) {
+        log.debug("Adding port {}", port);
 
-		KVPort rcPort = new KVPort(port.getDpid(), port.getNumber());
-		rcPort.setStatus(KVPort.STATUS.ACTIVE);
-		rcPort.forceCreate();
-		// TODO add description into KVPort
-		//rcPort.setDescription(port.getDescription());
+        KVPort rcPort = new KVPort(port.getDpid(), port.getNumber());
+        rcPort.setStatus(KVPort.STATUS.ACTIVE);
+        rcPort.forceCreate();
+        // TODO add description into KVPort
+        //rcPort.setDescription(port.getDescription());
 
-		return true;
-	}
+        return true;
+    }
 
-	/**
-	 * Update a port as inactive in the database.
-	 *
-	 * @param port the port to update.
-	 * @return true on success, otherwise false.
-	 */
-	public boolean deactivatePort(PortEvent port) {
-		log.debug("Deactivating port {}", port);
+    /**
+     * Update a port as inactive in the database.
+     *
+     * @param port the port to update.
+     * @return true on success, otherwise false.
+     */
+    public boolean deactivatePort(PortEvent port) {
+        log.debug("Deactivating port {}", port);
 
-		KVPort rcPort = new KVPort(port.getDpid(), port.getNumber());
-		rcPort.setStatus(STATUS.INACTIVE);
+        KVPort rcPort = new KVPort(port.getDpid(), port.getNumber());
+        rcPort.setStatus(STATUS.INACTIVE);
 
-		rcPort.forceCreate();
+        rcPort.forceCreate();
 
-		return true;
-	}
+        return true;
+    }
 
-	/**
-	 * Add a link to the database.
-	 *
-	 * @param link the link to add.
-	 * @return true on success, otherwise false.
-	 */
-	public boolean addLink(LinkEvent link) {
-		log.debug("Adding link {}", link);
+    /**
+     * Add a link to the database.
+     *
+     * @param link the link to add.
+     * @return true on success, otherwise false.
+     */
+    public boolean addLink(LinkEvent link) {
+        log.debug("Adding link {}", link);
 
-		KVLink rcLink = new KVLink(link.getSrc().getDpid(),
-					   link.getSrc().getNumber(),
-					   link.getDst().getDpid(),
-					   link.getDst().getNumber());
+        KVLink rcLink = new KVLink(link.getSrc().getDpid(),
+                link.getSrc().getNumber(),
+                link.getDst().getDpid(),
+                link.getDst().getNumber());
 
-		// XXX This method is called only by discovery,
-		// which means what we are trying to write currently is the truth
-		// so we can force write here
-		//
-		// TODO: We need to check for errors
-		rcLink.setStatus(KVLink.STATUS.ACTIVE);
-		rcLink.forceCreate();
+        // XXX This method is called only by discovery,
+        // which means what we are trying to write currently is the truth
+        // so we can force write here
+        //
+        // TODO: We need to check for errors
+        rcLink.setStatus(KVLink.STATUS.ACTIVE);
+        rcLink.forceCreate();
 
-		return true;					// Success
-	}
+        return true;                    // Success
+    }
 
-	public boolean removeLink(LinkEvent linkEvent) {
-		log.debug("Removing link {}", linkEvent);
+    public boolean removeLink(LinkEvent linkEvent) {
+        log.debug("Removing link {}", linkEvent);
 
-		KVLink rcLink = new KVLink(linkEvent.getSrc().getDpid(), linkEvent.getSrc().getNumber(),
-				linkEvent.getDst().getDpid(), linkEvent.getDst().getNumber());
-		rcLink.forceDelete();
+        KVLink rcLink = new KVLink(linkEvent.getSrc().getDpid(), linkEvent.getSrc().getNumber(),
+                linkEvent.getDst().getDpid(), linkEvent.getDst().getNumber());
+        rcLink.forceDelete();
 
-		return true;
-	}
+        return true;
+    }
 
-	/**
-	 * Add a device to the database.
-	 *
-	 * @param device the device to add.
-	 * @return true on success, otherwise false.
-	 */
-	public boolean addDevice(DeviceEvent device) {
-		log.debug("Adding device into DB. mac {}", device.getMac());
+    /**
+     * Add a device to the database.
+     *
+     * @param device the device to add.
+     * @return true on success, otherwise false.
+     */
+    public boolean addDevice(DeviceEvent device) {
+        log.debug("Adding device into DB. mac {}", device.getMac());
 
-		KVDevice rcDevice = new KVDevice(device.getMac().toBytes());
-		rcDevice.setLastSeenTime(device.getLastSeenTime());
-		
-		for(SwitchPort sp : device.getAttachmentPoints()) {
-			byte[] portId = KVPort.getPortID(sp.getDpid(), sp.getNumber());		
-			rcDevice.addPortId(portId);
-		}
-		
-		for(InetAddress addr : device.getIpAddresses()) {
-			//It assume only one ip on a device now.
-			rcDevice.setIp(InetAddresses.coerceToInteger(addr));	
-		}
+        KVDevice rcDevice = new KVDevice(device.getMac().toBytes());
+        rcDevice.setLastSeenTime(device.getLastSeenTime());
 
-		rcDevice.forceCreate();
-		
-		return true;
-	}
+        for (SwitchPort sp : device.getAttachmentPoints()) {
+            byte[] portId = KVPort.getPortID(sp.getDpid(), sp.getNumber());
+            rcDevice.addPortId(portId);
+        }
 
-	/**
-	 * Remove a device from the database.
-	 *
-	 * @param device the device to remove.
-	 * @return true on success, otherwise false.
-	 */
-	public boolean removeDevice(DeviceEvent device) {
-		log.debug("Removing device into DB. mac {}", device.getMac());
-		
-		KVDevice rcDevice = new KVDevice(device.getMac().toBytes());
-		rcDevice.forceDelete();
-		
-		return true;
-	}
+        for (InetAddress addr : device.getIpAddresses()) {
+            //It assume only one ip on a device now.
+            rcDevice.setIp(InetAddresses.coerceToInteger(addr));
+        }
+
+        rcDevice.forceCreate();
+
+        return true;
+    }
+
+    /**
+     * Remove a device from the database.
+     *
+     * @param device the device to remove.
+     * @return true on success, otherwise false.
+     */
+    public boolean removeDevice(DeviceEvent device) {
+        log.debug("Removing device into DB. mac {}", device.getMac());
+
+        KVDevice rcDevice = new KVDevice(device.getMac().toBytes());
+        rcDevice.forceDelete();
+
+        return true;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/NetworkGraphDiscoveryInterface.java b/src/main/java/net/onrc/onos/core/topology/NetworkGraphDiscoveryInterface.java
index 14ef0ea..219417f 100644
--- a/src/main/java/net/onrc/onos/core/topology/NetworkGraphDiscoveryInterface.java
+++ b/src/main/java/net/onrc/onos/core/topology/NetworkGraphDiscoveryInterface.java
@@ -11,10 +11,10 @@
      * Switch discovered event.
      *
      * @param switchEvent the switch event.
-     * @param portEvents the corresponding port events for the switch.
+     * @param portEvents  the corresponding port events for the switch.
      */
     public void putSwitchDiscoveryEvent(SwitchEvent switchEvent,
-					Collection<PortEvent> portEvents);
+                                        Collection<PortEvent> portEvents);
 
     /**
      * Switch removed event.
diff --git a/src/main/java/net/onrc/onos/core/topology/NetworkGraphImpl.java b/src/main/java/net/onrc/onos/core/topology/NetworkGraphImpl.java
index 902ffa6..a60e390 100644
--- a/src/main/java/net/onrc/onos/core/topology/NetworkGraphImpl.java
+++ b/src/main/java/net/onrc/onos/core/topology/NetworkGraphImpl.java
@@ -18,143 +18,143 @@
 import org.slf4j.LoggerFactory;
 
 public class NetworkGraphImpl implements NetworkGraph {
-	@SuppressWarnings("unused")
-	private static final Logger log = LoggerFactory.getLogger(NetworkGraphImpl.class);
+    @SuppressWarnings("unused")
+    private static final Logger log = LoggerFactory.getLogger(NetworkGraphImpl.class);
 
-	// DPID -> Switch
-	private ConcurrentMap<Long, Switch> switches;
+    // DPID -> Switch
+    private ConcurrentMap<Long, Switch> switches;
 
-	private ConcurrentMap<InetAddress, Set<Device>> addr2Device;
-	private ConcurrentMap<MACAddress, Device> mac2Device;
+    private ConcurrentMap<InetAddress, Set<Device>> addr2Device;
+    private ConcurrentMap<MACAddress, Device> mac2Device;
 
-	private ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
-	private Lock readLock = readWriteLock.readLock();
-	// TODO use the write lock after refactor
-	private Lock writeLock = readWriteLock.writeLock();
+    private ReadWriteLock readWriteLock = new ReentrantReadWriteLock();
+    private Lock readLock = readWriteLock.readLock();
+    // TODO use the write lock after refactor
+    private Lock writeLock = readWriteLock.writeLock();
 
-	public NetworkGraphImpl() {
-		// TODO: Does these object need to be stored in Concurrent Collection?
-		switches = new ConcurrentHashMap<>();
-		addr2Device = new ConcurrentHashMap<>();
-		mac2Device = new ConcurrentHashMap<>();
-	}
+    public NetworkGraphImpl() {
+        // TODO: Does these object need to be stored in Concurrent Collection?
+        switches = new ConcurrentHashMap<>();
+        addr2Device = new ConcurrentHashMap<>();
+        mac2Device = new ConcurrentHashMap<>();
+    }
 
-	@Override
-	public Switch getSwitch(Long dpid) {
-		// TODO Check if it is safe to directly return this Object.
-		return switches.get(dpid);
-	}
+    @Override
+    public Switch getSwitch(Long dpid) {
+        // TODO Check if it is safe to directly return this Object.
+        return switches.get(dpid);
+    }
 
-	protected void putSwitch(Switch sw) {
-		switches.put(sw.getDpid(), sw);
-	}
+    protected void putSwitch(Switch sw) {
+        switches.put(sw.getDpid(), sw);
+    }
 
-	protected void removeSwitch(Long dpid) {
-		switches.remove(dpid);
-	}
+    protected void removeSwitch(Long dpid) {
+        switches.remove(dpid);
+    }
 
-	@Override
-	public Iterable<Switch> getSwitches() {
-		// TODO Check if it is safe to directly return this Object.
-		return Collections.unmodifiableCollection(switches.values());
-	}
+    @Override
+    public Iterable<Switch> getSwitches() {
+        // TODO Check if it is safe to directly return this Object.
+        return Collections.unmodifiableCollection(switches.values());
+    }
 
-	@Override
-	public Port getPort(Long dpid, Long number) {
-	    Switch sw = getSwitch(dpid);
-	    if (sw != null) {
-		return sw.getPort(number);
-	    }
-	    return null;
-	}
+    @Override
+    public Port getPort(Long dpid, Long number) {
+        Switch sw = getSwitch(dpid);
+        if (sw != null) {
+            return sw.getPort(number);
+        }
+        return null;
+    }
 
-	@Override
-	public Link getLink(Long dpid, Long number) {
-	    Port srcPort = getPort(dpid, number);
-	    if (srcPort == null)
-		return null;
-	    return srcPort.getOutgoingLink();
-	}
+    @Override
+    public Link getLink(Long dpid, Long number) {
+        Port srcPort = getPort(dpid, number);
+        if (srcPort == null)
+            return null;
+        return srcPort.getOutgoingLink();
+    }
 
-	@Override
-	public Link getLink(Long srcDpid, Long srcNumber, Long dstDpid,
-			    Long dstNumber) {
-	    Link link = getLink(srcDpid, srcNumber);
-	    if (link == null)
-		return null;
-	    if (!link.getDstSwitch().getDpid().equals(dstDpid))
-		return null;
-	    if (!link.getDstPort().getNumber().equals(dstNumber))
-		return null;
-	    return link;
-	}
+    @Override
+    public Link getLink(Long srcDpid, Long srcNumber, Long dstDpid,
+                        Long dstNumber) {
+        Link link = getLink(srcDpid, srcNumber);
+        if (link == null)
+            return null;
+        if (!link.getDstSwitch().getDpid().equals(dstDpid))
+            return null;
+        if (!link.getDstPort().getNumber().equals(dstNumber))
+            return null;
+        return link;
+    }
 
-	@Override
-	public Iterable<Link> getLinks() {
-		List<Link> linklist = new LinkedList<>();
+    @Override
+    public Iterable<Link> getLinks() {
+        List<Link> linklist = new LinkedList<>();
 
-		for (Switch sw : switches.values()) {
-			Iterable<Link> links = sw.getOutgoingLinks();
-			for (Link l : links) {
-				linklist.add(l);
-			}
-		}
-		return linklist;
-	}
+        for (Switch sw : switches.values()) {
+            Iterable<Link> links = sw.getOutgoingLinks();
+            for (Link l : links) {
+                linklist.add(l);
+            }
+        }
+        return linklist;
+    }
 
-	@Override
-	public Iterable<Device> getDevicesByIp(InetAddress ipAddress) {
-		Set<Device> devices = addr2Device.get(ipAddress);
-		if (devices == null) {
-			return Collections.emptySet();
-		}
-		return Collections.unmodifiableCollection(devices);
-	}
+    @Override
+    public Iterable<Device> getDevicesByIp(InetAddress ipAddress) {
+        Set<Device> devices = addr2Device.get(ipAddress);
+        if (devices == null) {
+            return Collections.emptySet();
+        }
+        return Collections.unmodifiableCollection(devices);
+    }
 
-	@Override
-	public Device getDeviceByMac(MACAddress address) {
-		return mac2Device.get(address);
-	}
+    @Override
+    public Device getDeviceByMac(MACAddress address) {
+        return mac2Device.get(address);
+    }
 
-	protected void putDevice(Device device) {
-	    mac2Device.put(device.getMacAddress(), device);
-	    for (InetAddress ipAddr : device.getIpAddress()) {
-		Set<Device> devices = addr2Device.get(ipAddr);
-		if (devices == null) {
-		    devices = new HashSet<>();
-		    addr2Device.put(ipAddr, devices);
-		}
-		devices.add(device);
-	    }
-	}
+    protected void putDevice(Device device) {
+        mac2Device.put(device.getMacAddress(), device);
+        for (InetAddress ipAddr : device.getIpAddress()) {
+            Set<Device> devices = addr2Device.get(ipAddr);
+            if (devices == null) {
+                devices = new HashSet<>();
+                addr2Device.put(ipAddr, devices);
+            }
+            devices.add(device);
+        }
+    }
 
-	protected void removeDevice(Device device) {
-	    mac2Device.remove(device.getMacAddress());
-	    for (InetAddress ipAddr : device.getIpAddress()) {
-		Set<Device> devices = addr2Device.get(ipAddr);
-		if (devices != null) {
-		    devices.remove(device);
-		    if (devices.isEmpty())
-			addr2Device.remove(ipAddr);
-		}
-	    }
-	}
+    protected void removeDevice(Device device) {
+        mac2Device.remove(device.getMacAddress());
+        for (InetAddress ipAddr : device.getIpAddress()) {
+            Set<Device> devices = addr2Device.get(ipAddr);
+            if (devices != null) {
+                devices.remove(device);
+                if (devices.isEmpty())
+                    addr2Device.remove(ipAddr);
+            }
+        }
+    }
 
-	@Override
-	public void acquireReadLock() {
-		readLock.lock();
-	}
+    @Override
+    public void acquireReadLock() {
+        readLock.lock();
+    }
 
-	@Override
-	public void releaseReadLock() {
-		readLock.unlock();
-	}
+    @Override
+    public void releaseReadLock() {
+        readLock.unlock();
+    }
 
-	protected void acquireWriteLock() {
-		writeLock.lock();
-	}
+    protected void acquireWriteLock() {
+        writeLock.lock();
+    }
 
-	protected void releaseWriteLock() {
-		writeLock.unlock();
-	}
+    protected void releaseWriteLock() {
+        writeLock.unlock();
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/NetworkGraphModule.java b/src/main/java/net/onrc/onos/core/topology/NetworkGraphModule.java
index c693df5..77981d6 100644
--- a/src/main/java/net/onrc/onos/core/topology/NetworkGraphModule.java
+++ b/src/main/java/net/onrc/onos/core/topology/NetworkGraphModule.java
@@ -18,80 +18,80 @@
 
 public class NetworkGraphModule implements IFloodlightModule, INetworkGraphService {
 
-	// This is initialized as a module for now
+    // This is initialized as a module for now
 
-	private TopologyManager topologyManager;
-	//private NetworkGraphDatastore southboundNetworkGraph;
-	private IDatagridService datagridService;
-	private IControllerRegistryService registryService;
+    private TopologyManager topologyManager;
+    //private NetworkGraphDatastore southboundNetworkGraph;
+    private IDatagridService datagridService;
+    private IControllerRegistryService registryService;
 
-	private CopyOnWriteArrayList<INetworkGraphListener> networkGraphListeners;
+    private CopyOnWriteArrayList<INetworkGraphListener> networkGraphListeners;
 
-	private IRestApiService restApi;
+    private IRestApiService restApi;
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleServices() {
-		List<Class<? extends IFloodlightService>> services =
-				new ArrayList<Class<? extends IFloodlightService>>();
-		services.add(INetworkGraphService.class);
-		return services;
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleServices() {
+        List<Class<? extends IFloodlightService>> services =
+                new ArrayList<Class<? extends IFloodlightService>>();
+        services.add(INetworkGraphService.class);
+        return services;
+    }
 
-	@Override
-	public Map<Class<? extends IFloodlightService>, IFloodlightService>
-			getServiceImpls() {
-		Map<Class<? extends IFloodlightService>, IFloodlightService> impls =
-				new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
-		impls.put(INetworkGraphService.class, this);
-		return impls;
-	}
+    @Override
+    public Map<Class<? extends IFloodlightService>, IFloodlightService>
+    getServiceImpls() {
+        Map<Class<? extends IFloodlightService>, IFloodlightService> impls =
+                new HashMap<Class<? extends IFloodlightService>, IFloodlightService>();
+        impls.put(INetworkGraphService.class, this);
+        return impls;
+    }
 
-	@Override
-	public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
-		List<Class<? extends IFloodlightService>> dependencies =
-				new ArrayList<Class<? extends IFloodlightService>>();
-		dependencies.add(IDatagridService.class);
-		dependencies.add(IRestApiService.class);
-		dependencies.add(IControllerRegistryService.class);
-		return dependencies;
-	}
+    @Override
+    public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
+        List<Class<? extends IFloodlightService>> dependencies =
+                new ArrayList<Class<? extends IFloodlightService>>();
+        dependencies.add(IDatagridService.class);
+        dependencies.add(IRestApiService.class);
+        dependencies.add(IControllerRegistryService.class);
+        return dependencies;
+    }
 
-	@Override
-	public void init(FloodlightModuleContext context)
-			throws FloodlightModuleException {
-		restApi = context.getServiceImpl(IRestApiService.class);
-		datagridService = context.getServiceImpl(IDatagridService.class);
-		registryService = context.getServiceImpl(IControllerRegistryService.class);
+    @Override
+    public void init(FloodlightModuleContext context)
+            throws FloodlightModuleException {
+        restApi = context.getServiceImpl(IRestApiService.class);
+        datagridService = context.getServiceImpl(IDatagridService.class);
+        registryService = context.getServiceImpl(IControllerRegistryService.class);
 
-		networkGraphListeners = new CopyOnWriteArrayList<>();
-		topologyManager = new TopologyManager(registryService, networkGraphListeners);
-		//southboundNetworkGraph = new NetworkGraphDatastore(networkGraph);
-	}
+        networkGraphListeners = new CopyOnWriteArrayList<>();
+        topologyManager = new TopologyManager(registryService, networkGraphListeners);
+        //southboundNetworkGraph = new NetworkGraphDatastore(networkGraph);
+    }
 
-	@Override
-	public void startUp(FloodlightModuleContext context) {
-		restApi.addRestletRoutable(new NetworkGraphWebRoutable());
-		topologyManager.startup(datagridService);
-	}
+    @Override
+    public void startUp(FloodlightModuleContext context) {
+        restApi.addRestletRoutable(new NetworkGraphWebRoutable());
+        topologyManager.startup(datagridService);
+    }
 
-	@Override
-	public NetworkGraph getNetworkGraph() {
-		return topologyManager.getNetworkGraph();
-	}
+    @Override
+    public NetworkGraph getNetworkGraph() {
+        return topologyManager.getNetworkGraph();
+    }
 
-	@Override
-	public NetworkGraphDiscoveryInterface getNetworkGraphDiscoveryInterface() {
-		return topologyManager;
-	}
+    @Override
+    public NetworkGraphDiscoveryInterface getNetworkGraphDiscoveryInterface() {
+        return topologyManager;
+    }
 
-	@Override
-	public void registerNetworkGraphListener(INetworkGraphListener listener) {
-	    networkGraphListeners.addIfAbsent(listener);
-	}
+    @Override
+    public void registerNetworkGraphListener(INetworkGraphListener listener) {
+        networkGraphListeners.addIfAbsent(listener);
+    }
 
-	@Override
-	public void deregisterNetworkGraphListener(INetworkGraphListener listener) {
-	    networkGraphListeners.remove(listener);
-	}
+    @Override
+    public void deregisterNetworkGraphListener(INetworkGraphListener listener) {
+        networkGraphListeners.remove(listener);
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/NetworkGraphObject.java b/src/main/java/net/onrc/onos/core/topology/NetworkGraphObject.java
index fde4a44..bef0e11 100644
--- a/src/main/java/net/onrc/onos/core/topology/NetworkGraphObject.java
+++ b/src/main/java/net/onrc/onos/core/topology/NetworkGraphObject.java
@@ -3,10 +3,10 @@
 
 public class NetworkGraphObject {
 
-	protected final NetworkGraph graph;
-	
-	public NetworkGraphObject(NetworkGraph graph) {
-		this.graph = graph;
-	}
+    protected final NetworkGraph graph;
+
+    public NetworkGraphObject(NetworkGraph graph) {
+        this.graph = graph;
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/NetworkGraphPublisher.java b/src/main/java/net/onrc/onos/core/topology/NetworkGraphPublisher.java
index fef71e7..bc72e00 100644
--- a/src/main/java/net/onrc/onos/core/topology/NetworkGraphPublisher.java
+++ b/src/main/java/net/onrc/onos/core/topology/NetworkGraphPublisher.java
@@ -37,13 +37,12 @@
  * The NetworkGraphPublisher subscribes to topology network events from the
  * discovery modules. These events are reformatted and relayed to the topology
  * part of the network graph
- *
  */
 public class NetworkGraphPublisher implements /*IOFSwitchListener,*/
-                                    IOFSwitchPortListener,
-                                    ILinkDiscoveryListener,
-                                    IFloodlightModule,
-                                    IOnosDeviceListener {
+        IOFSwitchPortListener,
+        ILinkDiscoveryListener,
+        IFloodlightModule,
+        IOnosDeviceListener {
     private static final Logger log =
             LoggerFactory.getLogger(NetworkGraphPublisher.class);
 
@@ -96,7 +95,7 @@
                 log.trace("Checking for inactive switches");
             }
             // For each switch check if a controller exists in controller registry
-            for (Switch sw: switches) {
+            for (Switch sw : switches) {
                 try {
                     String controller =
                             registryService.getControllerForSwitch(sw.getDpid());
@@ -115,7 +114,8 @@
          * Second half of the switch cleanup operation. If the registry grants
          * control of a switch, we can be sure no other instance is writing
          * this switch to the network graph, so we can remove it now.
-         * @param dpid the dpid of the switch we requested control for
+         *
+         * @param dpid       the dpid of the switch we requested control for
          * @param hasControl whether we got control or not
          */
         @Override
@@ -139,17 +139,17 @@
                 (long) update.getDstPort());
 
         switch (update.getOperation()) {
-        case LINK_ADDED:
-            networkGraphDiscoveryInterface.putLinkDiscoveryEvent(linkEvent);
-            break;
-        case LINK_UPDATED:
-            // We don't use the LINK_UPDATED event (unsure what it means)
-            break;
-        case LINK_REMOVED:
-            networkGraphDiscoveryInterface.removeLinkDiscoveryEvent(linkEvent);
-            break;
-        default:
-            break;
+            case LINK_ADDED:
+                networkGraphDiscoveryInterface.putLinkDiscoveryEvent(linkEvent);
+                break;
+            case LINK_UPDATED:
+                // We don't use the LINK_UPDATED event (unsure what it means)
+                break;
+            case LINK_REMOVED:
+                networkGraphDiscoveryInterface.removeLinkDiscoveryEvent(linkEvent);
+                break;
+            default:
+                break;
         }
     }
 
@@ -180,7 +180,7 @@
             portEvents.add(new PortEvent(sw.getId(), (long) port.getPortNumber()));
         }
         networkGraphDiscoveryInterface
-        .putSwitchDiscoveryEvent(switchEvent, portEvents);
+                .putSwitchDiscoveryEvent(switchEvent, portEvents);
 
         for (OFPhysicalPort port : sw.getPorts()) {
             // Allow links to be discovered on this port now that it's
@@ -222,7 +222,7 @@
 
     @Override
     public Collection<Class<? extends IFloodlightService>>
-                getModuleDependencies() {
+    getModuleDependencies() {
         Collection<Class<? extends IFloodlightService>> l =
                 new ArrayList<Class<? extends IFloodlightService>>();
         l.add(IFloodlightProviderService.class);
diff --git a/src/main/java/net/onrc/onos/core/topology/Path.java b/src/main/java/net/onrc/onos/core/topology/Path.java
index 1d15fc7..9c5118d 100644
--- a/src/main/java/net/onrc/onos/core/topology/Path.java
+++ b/src/main/java/net/onrc/onos/core/topology/Path.java
@@ -5,20 +5,21 @@
 
 /**
  * Base class for Path representation
+ *
  * @author Toshio Koide (t-koide@onlab.us)
  */
 public class Path extends LinkedList<LinkEvent> {
-	private static final long serialVersionUID = 7127274096495173415L;
+    private static final long serialVersionUID = 7127274096495173415L;
 
-	@Override
-	public String toString() {
-		StringBuilder builder = new StringBuilder();
-		Iterator<LinkEvent> i = this.iterator();
-		while (i.hasNext()) {
-			builder.append(i.next().toString());
-			if (i.hasNext())
-				builder.append(", ");
-		}
-		return builder.toString();
-	}
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder();
+        Iterator<LinkEvent> i = this.iterator();
+        while (i.hasNext()) {
+            builder.append(i.next().toString());
+            if (i.hasNext())
+                builder.append(", ");
+        }
+        return builder.toString();
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/Port.java b/src/main/java/net/onrc/onos/core/topology/Port.java
index e9f6bb8..216d4b8 100644
--- a/src/main/java/net/onrc/onos/core/topology/Port.java
+++ b/src/main/java/net/onrc/onos/core/topology/Port.java
@@ -1,24 +1,26 @@
 package net.onrc.onos.core.topology;
 
 
-
 /**
  * Interface of Port Object exposed to the "NB" read-only Topology.
- *
+ * <p/>
  * Everything returned by these interfaces must be either Unmodifiable view,
  * immutable object, or a copy of the original "SB" In-memory Topology.
- *
  */
 public interface Port {
-	public Long getDpid();
-	public Long getNumber();
-	public Long getHardwareAddress();
-	public String getDescription();
+    public Long getDpid();
 
-	public Switch getSwitch();
+    public Long getNumber();
 
-	public Link getOutgoingLink();
-	public Link getIncomingLink();
+    public Long getHardwareAddress();
 
-	public Iterable<Device> getDevices();
+    public String getDescription();
+
+    public Switch getSwitch();
+
+    public Link getOutgoingLink();
+
+    public Link getIncomingLink();
+
+    public Iterable<Device> getDevices();
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/PortEvent.java b/src/main/java/net/onrc/onos/core/topology/PortEvent.java
index 65d0b94..2a18c08 100644
--- a/src/main/java/net/onrc/onos/core/topology/PortEvent.java
+++ b/src/main/java/net/onrc/onos/core/topology/PortEvent.java
@@ -4,23 +4,22 @@
 
 /**
  * Self-contained Port event Object
- *
+ * <p/>
  * TODO: We probably want common base class/interface for Self-Contained Event Object
- *
  */
 public class PortEvent {
     public static class SwitchPort {
-	public final Long dpid;
-	public final Long number;
+        public final Long dpid;
+        public final Long number;
 
-	/**
-	 * Default constructor for Serializer to use.
-	 */
-	@Deprecated
-	public SwitchPort() {
-	    dpid = null;
-	    number = null;
-	}
+        /**
+         * Default constructor for Serializer to use.
+         */
+        @Deprecated
+        public SwitchPort() {
+            dpid = null;
+            number = null;
+        }
 
         public SwitchPort(Long dpid, Long number) {
             this.dpid = dpid;
@@ -46,29 +45,29 @@
             int result = 1;
             result = prime * result + ((dpid == null) ? 0 : dpid.hashCode());
             result = prime * result
-        	    + ((number == null) ? 0 : number.hashCode());
+                    + ((number == null) ? 0 : number.hashCode());
             return result;
         }
 
         @Override
         public boolean equals(Object obj) {
             if (this == obj)
-        	return true;
+                return true;
             if (obj == null)
-        	return false;
+                return false;
             if (getClass() != obj.getClass())
-        	return false;
+                return false;
             SwitchPort other = (SwitchPort) obj;
             if (dpid == null) {
-        	if (other.dpid != null)
-        	    return false;
+                if (other.dpid != null)
+                    return false;
             } else if (!dpid.equals(other.dpid))
-        	return false;
+                return false;
             if (number == null) {
-        	if (other.number != null)
-        	    return false;
+                if (other.number != null)
+                    return false;
             } else if (!number.equals(other.number))
-        	return false;
+                return false;
             return true;
         }
     }
@@ -82,44 +81,44 @@
      */
     @Deprecated
     public PortEvent() {
-	id = null;
+        id = null;
     }
 
     public PortEvent(Long dpid, Long number) {
-	this.id = new SwitchPort(dpid, number);
+        this.id = new SwitchPort(dpid, number);
     }
 
     public Long getDpid() {
-	return id.dpid;
+        return id.dpid;
     }
 
     public Long getNumber() {
-	return id.number;
+        return id.number;
     }
 
     @Override
     public String toString() {
-	return "[PortEvent 0x" + Long.toHexString(id.dpid) + "@" + id.number + "]";
+        return "[PortEvent 0x" + Long.toHexString(id.dpid) + "@" + id.number + "]";
     }
 
     public static final int PORTID_BYTES = SwitchEvent.SWITCHID_BYTES + 2 + 8;
 
     public static ByteBuffer getPortID(Long dpid, Long number) {
-	if (dpid == null) {
-	    throw new IllegalArgumentException("dpid cannot be null");
-	}
-	if (number == null) {
-	    throw new IllegalArgumentException("number cannot be null");
-	}
-	return (ByteBuffer) ByteBuffer.allocate(PortEvent.PORTID_BYTES).putChar('S').putLong(dpid)
-		.putChar('P').putLong(number).flip();
+        if (dpid == null) {
+            throw new IllegalArgumentException("dpid cannot be null");
+        }
+        if (number == null) {
+            throw new IllegalArgumentException("number cannot be null");
+        }
+        return (ByteBuffer) ByteBuffer.allocate(PortEvent.PORTID_BYTES).putChar('S').putLong(dpid)
+                .putChar('P').putLong(number).flip();
     }
 
     public byte[] getID() {
-	return getPortID(getDpid(), getNumber()).array();
+        return getPortID(getDpid(), getNumber()).array();
     }
 
     public ByteBuffer getIDasByteBuffer() {
-	return getPortID(getDpid(), getNumber());
+        return getPortID(getDpid(), getNumber());
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/PortImpl.java b/src/main/java/net/onrc/onos/core/topology/PortImpl.java
index cd7d82b..32646d0 100644
--- a/src/main/java/net/onrc/onos/core/topology/PortImpl.java
+++ b/src/main/java/net/onrc/onos/core/topology/PortImpl.java
@@ -6,108 +6,106 @@
 
 /**
  * Port Object stored in In-memory Topology.
- *
+ * <p/>
  * TODO REMOVE following design memo: This object itself may hold the DBObject,
  * but this Object itself will not issue any read/write to the DataStore.
  */
 public class PortImpl extends NetworkGraphObject implements Port {
 
-	private Switch sw;
+    private Switch sw;
 
-	private Long number;
-	private String description;
+    private Long number;
+    private String description;
 
-	protected Link outgoingLink;
-	protected Link incomingLink;
-	// These needs to be ConcurrentCollecton if allowing Graph to be accessed Concurrently
-	protected Set<Device> devices;
+    protected Link outgoingLink;
+    protected Link incomingLink;
+    // These needs to be ConcurrentCollecton if allowing Graph to be accessed Concurrently
+    protected Set<Device> devices;
 
-	public PortImpl(NetworkGraph graph, Switch parentSwitch, Long number) {
-		super(graph);
-		this.sw = parentSwitch;
-		this.number = number;
-		this.devices = new HashSet<>();
-	}
+    public PortImpl(NetworkGraph graph, Switch parentSwitch, Long number) {
+        super(graph);
+        this.sw = parentSwitch;
+        this.number = number;
+        this.devices = new HashSet<>();
+    }
 
-	@Override
-	public Long getDpid() {
-	    return sw.getDpid();
-	}
+    @Override
+    public Long getDpid() {
+        return sw.getDpid();
+    }
 
-	@Override
-	public Long getNumber() {
-		return number;
-	}
+    @Override
+    public Long getNumber() {
+        return number;
+    }
 
-	@Override
-	public String getDescription() {
-		return description;
-	}
+    @Override
+    public String getDescription() {
+        return description;
+    }
 
-	public void setDescription(String description) {
-		this.description = description;
-	}
+    public void setDescription(String description) {
+        this.description = description;
+    }
 
-	@Override
-	public Long getHardwareAddress() {
-		// TODO Auto-generated method stub
-		return 0L;
-	}
+    @Override
+    public Long getHardwareAddress() {
+        // TODO Auto-generated method stub
+        return 0L;
+    }
 
-	@Override
-	public Switch getSwitch() {
-		return sw;
-	}
+    @Override
+    public Switch getSwitch() {
+        return sw;
+    }
 
-	@Override
-	public Link getOutgoingLink() {
-		return outgoingLink;
-	}
+    @Override
+    public Link getOutgoingLink() {
+        return outgoingLink;
+    }
 
-	@Override
-	public Link getIncomingLink() {
-		return incomingLink;
-	}
+    @Override
+    public Link getIncomingLink() {
+        return incomingLink;
+    }
 
-	@Override
-	public Iterable<Device> getDevices() {
-	    return Collections.unmodifiableSet(this.devices);
-	}
+    @Override
+    public Iterable<Device> getDevices() {
+        return Collections.unmodifiableSet(this.devices);
+    }
 
-	public void setOutgoingLink(Link link) {
-		outgoingLink = link;
-	}
+    public void setOutgoingLink(Link link) {
+        outgoingLink = link;
+    }
 
-	public void setIncomingLink(Link link) {
-		incomingLink = link;
-	}
+    public void setIncomingLink(Link link) {
+        incomingLink = link;
+    }
 
-	/**
-	 *
-	 * @param d
-	 * @return true if successfully added
-	 */
-	public boolean addDevice(Device d) {
-	    return this.devices.add(d);
-	}
+    /**
+     * @param d
+     * @return true if successfully added
+     */
+    public boolean addDevice(Device d) {
+        return this.devices.add(d);
+    }
 
-	/**
-	 *
-	 * @param d
-	 * @return true if device existed and was removed
-	 */
-	public boolean removeDevice(Device d) {
-	    return this.devices.remove(d);
-	}
+    /**
+     * @param d
+     * @return true if device existed and was removed
+     */
+    public boolean removeDevice(Device d) {
+        return this.devices.remove(d);
+    }
 
-	public void removeAllDevice() {
-	    this.devices.clear();
-	}
+    public void removeAllDevice() {
+        this.devices.clear();
+    }
 
-	@Override
-	public String toString() {
-		return String.format("%d:%d",
-				getSwitch().getDpid(),
-				getNumber());
-	}
+    @Override
+    public String toString() {
+        return String.format("%d:%d",
+                getSwitch().getDpid(),
+                getNumber());
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/Switch.java b/src/main/java/net/onrc/onos/core/topology/Switch.java
index 0b97dfa..d9796be 100644
--- a/src/main/java/net/onrc/onos/core/topology/Switch.java
+++ b/src/main/java/net/onrc/onos/core/topology/Switch.java
@@ -4,28 +4,28 @@
 
 /**
  * Interface of Switch Object exposed to the "NB" read-only Topology.
- *
+ * <p/>
  * Everything returned by these interfaces must be either Unmodifiable view,
  * immutable object, or a copy of the original "SB" In-memory Topology.
- *
  */
 public interface Switch {
-	public Long getDpid();
+    public Long getDpid();
 
-	public Collection<Port> getPorts();
+    public Collection<Port> getPorts();
 
-	public Port getPort(Long number);
+    public Port getPort(Long number);
 
 
-	// Graph traversal API
-	// XXX What is the Definition of neighbor? Link exist in both direction or one-way is sufficient to be a neighbor, etc.
-	public Iterable<Switch> getNeighbors();
+    // Graph traversal API
+    // XXX What is the Definition of neighbor? Link exist in both direction or one-way is sufficient to be a neighbor, etc.
+    public Iterable<Switch> getNeighbors();
 
-	public Iterable<Link> getOutgoingLinks();
-	public Iterable<Link> getIncomingLinks();
+    public Iterable<Link> getOutgoingLinks();
 
-	public Link getLinkToNeighbor(Long dpid);
+    public Iterable<Link> getIncomingLinks();
 
-	// XXX Iterable or Collection?
-	public Collection<Device> getDevices();
+    public Link getLinkToNeighbor(Long dpid);
+
+    // XXX Iterable or Collection?
+    public Collection<Device> getDevices();
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/SwitchEvent.java b/src/main/java/net/onrc/onos/core/topology/SwitchEvent.java
index b36eba2..7ed65d8 100644
--- a/src/main/java/net/onrc/onos/core/topology/SwitchEvent.java
+++ b/src/main/java/net/onrc/onos/core/topology/SwitchEvent.java
@@ -4,9 +4,8 @@
 
 /**
  * Self-contained Switch Object
- *
+ * <p/>
  * TODO: We probably want common base class/interface for Self-Contained Event Object
- *
  */
 public class SwitchEvent {
     protected final Long dpid;
@@ -16,36 +15,36 @@
      */
     @Deprecated
     public SwitchEvent() {
-	dpid = null;
+        dpid = null;
     }
 
     public SwitchEvent(Long dpid) {
-	this.dpid = dpid;
+        this.dpid = dpid;
     }
 
     public Long getDpid() {
-	return dpid;
+        return dpid;
     }
 
     @Override
     public String toString() {
-	return "[SwitchEvent 0x" + Long.toHexString(dpid) + "]";
+        return "[SwitchEvent 0x" + Long.toHexString(dpid) + "]";
     }
 
     public static final int SWITCHID_BYTES = 2 + 8;
 
     public static ByteBuffer getSwitchID(Long dpid) {
-	if (dpid == null) {
-	    throw new IllegalArgumentException("dpid cannot be null");
-	}
-	return (ByteBuffer) ByteBuffer.allocate(SwitchEvent.SWITCHID_BYTES).putChar('S').putLong(dpid).flip();
+        if (dpid == null) {
+            throw new IllegalArgumentException("dpid cannot be null");
+        }
+        return (ByteBuffer) ByteBuffer.allocate(SwitchEvent.SWITCHID_BYTES).putChar('S').putLong(dpid).flip();
     }
 
     public byte[] getID() {
-	return getSwitchID(dpid).array();
+        return getSwitchID(dpid).array();
     }
 
     public ByteBuffer getIDasByteBuffer() {
-	return getSwitchID(dpid);
+        return getSwitchID(dpid);
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/SwitchImpl.java b/src/main/java/net/onrc/onos/core/topology/SwitchImpl.java
index 8a45b76..3fe053c 100644
--- a/src/main/java/net/onrc/onos/core/topology/SwitchImpl.java
+++ b/src/main/java/net/onrc/onos/core/topology/SwitchImpl.java
@@ -12,111 +12,111 @@
 
 /**
  * Switch Object stored in In-memory Topology.
- *
+ * <p/>
  * TODO REMOVE following design memo: This object itself may hold the DBObject,
  * but this Object itself will not issue any read/write to the DataStore.
  */
 public class SwitchImpl extends NetworkGraphObject implements Switch {
 
-	private Long dpid;
-	// These needs to be ConcurrentCollecton if allowing Graph to be accessed Concurrently
-	private final Map<Long, Port> ports;
+    private Long dpid;
+    // These needs to be ConcurrentCollecton if allowing Graph to be accessed Concurrently
+    private final Map<Long, Port> ports;
 
-	public SwitchImpl(NetworkGraph graph, Long dpid) {
-		super(graph);
-		this.dpid = dpid;
-		ports = new HashMap<Long, Port>();
-	}
+    public SwitchImpl(NetworkGraph graph, Long dpid) {
+        super(graph);
+        this.dpid = dpid;
+        ports = new HashMap<Long, Port>();
+    }
 
-	@Override
-	public Long getDpid() {
-		return dpid;
-	}
+    @Override
+    public Long getDpid() {
+        return dpid;
+    }
 
-	@Override
-	public Collection<Port> getPorts() {
-		return Collections.unmodifiableCollection(ports.values());
-	}
+    @Override
+    public Collection<Port> getPorts() {
+        return Collections.unmodifiableCollection(ports.values());
+    }
 
-	@Override
-	public Port getPort(Long number) {
-		return ports.get(number);
-	}
+    @Override
+    public Port getPort(Long number) {
+        return ports.get(number);
+    }
 
-	@Override
-	public Iterable<Switch> getNeighbors() {
-		Set<Switch> neighbors = new HashSet<>();
-		for (Link link : getOutgoingLinks()) {
-		    neighbors.add(link.getDstSwitch());
-		}
-		// XXX should incoming considered neighbor?
-		for (Link link : getIncomingLinks()) {
-		    neighbors.add(link.getSrcSwitch());
-		}
-		return neighbors;
-	}
+    @Override
+    public Iterable<Switch> getNeighbors() {
+        Set<Switch> neighbors = new HashSet<>();
+        for (Link link : getOutgoingLinks()) {
+            neighbors.add(link.getDstSwitch());
+        }
+        // XXX should incoming considered neighbor?
+        for (Link link : getIncomingLinks()) {
+            neighbors.add(link.getSrcSwitch());
+        }
+        return neighbors;
+    }
 
-	@Override
-	public Link getLinkToNeighbor(Long neighborDpid) {
-		for (Link link : getOutgoingLinks()) {
-			if (link.getDstSwitch().getDpid().equals(neighborDpid) ) {
-				return link;
-			}
-		}
-		return null;
-	}
+    @Override
+    public Link getLinkToNeighbor(Long neighborDpid) {
+        for (Link link : getOutgoingLinks()) {
+            if (link.getDstSwitch().getDpid().equals(neighborDpid)) {
+                return link;
+            }
+        }
+        return null;
+    }
 
-	@Override
-	public Collection<Device> getDevices() {
-		// TODO Should switch also store a list of attached devices to avoid
-		// calculating this every time?
-		List<Device> devices = new ArrayList<Device>();
+    @Override
+    public Collection<Device> getDevices() {
+        // TODO Should switch also store a list of attached devices to avoid
+        // calculating this every time?
+        List<Device> devices = new ArrayList<Device>();
 
-		for (Port port : ports.values()) {
-			for (Device device : port.getDevices()) {
-				devices.add(device);
-			}
-		}
+        for (Port port : ports.values()) {
+            for (Device device : port.getDevices()) {
+                devices.add(device);
+            }
+        }
 
-		return devices;
-	}
+        return devices;
+    }
 
-	public void addPort(Port port) {
-		this.ports.put(port.getNumber(), port);
-	}
+    public void addPort(Port port) {
+        this.ports.put(port.getNumber(), port);
+    }
 
-	public Port removePort(Port port) {
-	    Port p = this.ports.remove(port.getNumber());
-	    return p;
-	}
+    public Port removePort(Port port) {
+        Port p = this.ports.remove(port.getNumber());
+        return p;
+    }
 
-	public Port addPort(Long portNumber) {
-		PortImpl port = new PortImpl(graph, this, portNumber);
-		ports.put(port.getNumber(), port);
-		return port;
-	}
+    public Port addPort(Long portNumber) {
+        PortImpl port = new PortImpl(graph, this, portNumber);
+        ports.put(port.getNumber(), port);
+        return port;
+    }
 
-	@Override
-	public Iterable<Link> getOutgoingLinks() {
-		LinkedList<Link> links = new LinkedList<Link>();
-		for (Port port: getPorts()) {
-			Link link = port.getOutgoingLink();
-			if (link != null) {
-				links.add(link);
-			}
-		}
-		return links;
-	}
+    @Override
+    public Iterable<Link> getOutgoingLinks() {
+        LinkedList<Link> links = new LinkedList<Link>();
+        for (Port port : getPorts()) {
+            Link link = port.getOutgoingLink();
+            if (link != null) {
+                links.add(link);
+            }
+        }
+        return links;
+    }
 
-	@Override
-	public Iterable<Link> getIncomingLinks() {
-		LinkedList<Link> links = new LinkedList<Link>();
-		for (Port port: getPorts()) {
-			Link link = port.getIncomingLink();
-			if (link != null) {
-				links.add(link);
-			}
-		}
-		return links;
-	}
+    @Override
+    public Iterable<Link> getIncomingLinks() {
+        LinkedList<Link> links = new LinkedList<Link>();
+        for (Port port : getPorts()) {
+            Link link = port.getIncomingLink();
+            if (link != null) {
+                links.add(link);
+            }
+        }
+        return links;
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/TopologyEvent.java b/src/main/java/net/onrc/onos/core/topology/TopologyEvent.java
index 84cd5cb..4f3dd20 100644
--- a/src/main/java/net/onrc/onos/core/topology/TopologyEvent.java
+++ b/src/main/java/net/onrc/onos/core/topology/TopologyEvent.java
@@ -2,16 +2,16 @@
 
 /**
  * Self-contained Topology event Object
- *
+ * <p/>
  * TODO: For now the topology event contains one of the following events:
  * Switch, Port, Link, Device. In the future it will contain multiple events
  * in a single transaction.
  */
 public class TopologyEvent {
-    SwitchEvent switchEvent = null;		// Set for Switch event
-    PortEvent portEvent = null;			// Set for Port event
-    LinkEvent linkEvent = null;			// Set for Link event
-    DeviceEvent deviceEvent = null;		// Set for Device event
+    SwitchEvent switchEvent = null;        // Set for Switch event
+    PortEvent portEvent = null;            // Set for Port event
+    LinkEvent linkEvent = null;            // Set for Link event
+    DeviceEvent deviceEvent = null;        // Set for Device event
 
     /**
      * Default constructor.
@@ -25,7 +25,7 @@
      * @param switchEvent the Switch event to use.
      */
     TopologyEvent(SwitchEvent switchEvent) {
-	this.switchEvent = switchEvent;
+        this.switchEvent = switchEvent;
     }
 
     /**
@@ -34,7 +34,7 @@
      * @param portEvent the Port event to use.
      */
     TopologyEvent(PortEvent portEvent) {
-	this.portEvent = portEvent;
+        this.portEvent = portEvent;
     }
 
     /**
@@ -43,7 +43,7 @@
      * @param linkEvent the Link event to use.
      */
     TopologyEvent(LinkEvent linkEvent) {
-	this.linkEvent = linkEvent;
+        this.linkEvent = linkEvent;
     }
 
     /**
@@ -52,7 +52,7 @@
      * @param deviceEvent the Device event to use.
      */
     TopologyEvent(DeviceEvent deviceEvent) {
-	this.deviceEvent = deviceEvent;
+        this.deviceEvent = deviceEvent;
     }
 
     /**
@@ -62,15 +62,15 @@
      */
     @Override
     public String toString() {
-	if (switchEvent != null)
-	    return switchEvent.toString();
-	if (portEvent != null)
-	    return portEvent.toString();
-	if (linkEvent != null)
-	    return linkEvent.toString();
-	if (deviceEvent != null)
-	    return deviceEvent.toString();
-	return "[Empty TopologyEvent]";
+        if (switchEvent != null)
+            return switchEvent.toString();
+        if (portEvent != null)
+            return portEvent.toString();
+        if (linkEvent != null)
+            return linkEvent.toString();
+        if (deviceEvent != null)
+            return deviceEvent.toString();
+        return "[Empty TopologyEvent]";
     }
 
     /**
@@ -79,14 +79,14 @@
      * @return the Topology event ID.
      */
     public byte[] getID() {
-	if (switchEvent != null)
-	    return switchEvent.getID();
-	if (portEvent != null)
-	    return portEvent.getID();
-	if (linkEvent != null)
-	    return linkEvent.getID();
-	if (deviceEvent != null)
-	    return deviceEvent.getID();
-	return null;
+        if (switchEvent != null)
+            return switchEvent.getID();
+        if (portEvent != null)
+            return portEvent.getID();
+        if (linkEvent != null)
+            return linkEvent.getID();
+        if (deviceEvent != null)
+            return deviceEvent.getID();
+        return null;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/TopologyManager.java b/src/main/java/net/onrc/onos/core/topology/TopologyManager.java
index b12eaae..4788641 100644
--- a/src/main/java/net/onrc/onos/core/topology/TopologyManager.java
+++ b/src/main/java/net/onrc/onos/core/topology/TopologyManager.java
@@ -29,22 +29,21 @@
 
 /**
  * The "NB" read-only Network Map.
- *
+ * <p/>
  * - Maintain Invariant/Relationships between Topology Objects.
- *
+ * <p/>
  * TODO To be synchronized based on TopologyEvent Notification.
- *
+ * <p/>
  * TODO TBD: Caller is expected to maintain parent/child calling order. Parent
  * Object must exist before adding sub component(Add Switch -> Port).
- *
+ * <p/>
  * TODO TBD: This class may delay the requested change to handle event
  * re-ordering. e.g.) Link Add came in, but Switch was not there.
- *
  */
 public class TopologyManager implements NetworkGraphDiscoveryInterface {
 
     private static final Logger log = LoggerFactory
-	    .getLogger(TopologyManager.class);
+            .getLogger(TopologyManager.class);
 
     private IEventChannel<byte[], TopologyEvent> eventChannel;
     public static final String EVENT_CHANNEL_NAME = "onos.topology";
@@ -60,11 +59,11 @@
     // NOTE: Switch Events are not affected by the event reordering.
     //
     private Map<ByteBuffer, PortEvent> reorderedAddedPortEvents =
-	new HashMap<ByteBuffer, PortEvent>();
+            new HashMap<ByteBuffer, PortEvent>();
     private Map<ByteBuffer, LinkEvent> reorderedAddedLinkEvents =
-	new HashMap<ByteBuffer, LinkEvent>();
+            new HashMap<ByteBuffer, LinkEvent>();
     private Map<ByteBuffer, DeviceEvent> reorderedAddedDeviceEvents =
-	new HashMap<ByteBuffer, DeviceEvent>();
+            new HashMap<ByteBuffer, DeviceEvent>();
 
     //
     // Local state for keeping track of locally discovered events so we can
@@ -77,11 +76,11 @@
     //    and Device events.
     //
     private Map<Long, Map<ByteBuffer, PortEvent>> discoveredAddedPortEvents =
-	new HashMap<>();
+            new HashMap<>();
     private Map<Long, Map<ByteBuffer, LinkEvent>> discoveredAddedLinkEvents =
-	new HashMap<>();
+            new HashMap<>();
     private Map<Long, Map<ByteBuffer, DeviceEvent>> discoveredAddedDeviceEvents =
-	new HashMap<>();
+            new HashMap<>();
 
     //
     // Local state for keeping track of the application event notifications
@@ -98,15 +97,15 @@
     /**
      * Constructor.
      *
-     * @param registryService the Registry Service to use.
+     * @param registryService       the Registry Service to use.
      * @param networkGraphListeners the collection of Network Graph Listeners
-     * to use.
+     *                              to use.
      */
     public TopologyManager(IControllerRegistryService registryService,
-			   CopyOnWriteArrayList<INetworkGraphListener> networkGraphListeners) {
-	datastore = new NetworkGraphDatastore();
-	this.registryService = registryService;
-	this.networkGraphListeners = networkGraphListeners;
+                           CopyOnWriteArrayList<INetworkGraphListener> networkGraphListeners) {
+        datastore = new NetworkGraphDatastore();
+        this.registryService = registryService;
+        this.networkGraphListeners = networkGraphListeners;
     }
 
     /**
@@ -115,247 +114,246 @@
      * @return the Network Graph.
      */
     NetworkGraph getNetworkGraph() {
-	return networkGraph;
+        return networkGraph;
     }
 
     /**
      * Event handler class.
      */
     private class EventHandler extends Thread implements
-	IEventChannelListener<byte[], TopologyEvent> {
-	private BlockingQueue<EventEntry<TopologyEvent>> topologyEvents =
-	    new LinkedBlockingQueue<EventEntry<TopologyEvent>>();
+            IEventChannelListener<byte[], TopologyEvent> {
+        private BlockingQueue<EventEntry<TopologyEvent>> topologyEvents =
+                new LinkedBlockingQueue<EventEntry<TopologyEvent>>();
 
-	/**
-	 * Startup processing.
-	 */
-	private void startup() {
-	    //
-	    // TODO: Read all state from the database:
-	    //
-	    // Collection<EventEntry<TopologyEvent>> collection =
-	    //    readWholeTopologyFromDB();
-	    //
-	    // For now, as a shortcut we read it from the datagrid
-	    //
-	    Collection<TopologyEvent> topologyEvents =
-		eventChannel.getAllEntries();
-	    Collection<EventEntry<TopologyEvent>> collection =
-		new LinkedList<EventEntry<TopologyEvent>>();
+        /**
+         * Startup processing.
+         */
+        private void startup() {
+            //
+            // TODO: Read all state from the database:
+            //
+            // Collection<EventEntry<TopologyEvent>> collection =
+            //    readWholeTopologyFromDB();
+            //
+            // For now, as a shortcut we read it from the datagrid
+            //
+            Collection<TopologyEvent> topologyEvents =
+                    eventChannel.getAllEntries();
+            Collection<EventEntry<TopologyEvent>> collection =
+                    new LinkedList<EventEntry<TopologyEvent>>();
 
-	    for (TopologyEvent topologyEvent : topologyEvents) {
-		EventEntry<TopologyEvent> eventEntry =
-		    new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
-						  topologyEvent);
-		collection.add(eventEntry);
-	    }
-	    processEvents(collection);
-	}
+            for (TopologyEvent topologyEvent : topologyEvents) {
+                EventEntry<TopologyEvent> eventEntry =
+                        new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
+                                topologyEvent);
+                collection.add(eventEntry);
+            }
+            processEvents(collection);
+        }
 
-	/**
-	 * Run the thread.
-	 */
-	@Override
-	public void run() {
-	    Collection<EventEntry<TopologyEvent>> collection =
-		new LinkedList<EventEntry<TopologyEvent>>();
+        /**
+         * Run the thread.
+         */
+        @Override
+        public void run() {
+            Collection<EventEntry<TopologyEvent>> collection =
+                    new LinkedList<EventEntry<TopologyEvent>>();
 
-	    this.setName("TopologyManager.EventHandler " + this.getId());
-	    startup();
+            this.setName("TopologyManager.EventHandler " + this.getId());
+            startup();
 
-	    //
-	    // The main loop
-	    //
-	    try {
-		while (true) {
-		    EventEntry<TopologyEvent> eventEntry = topologyEvents.take();
-		    collection.add(eventEntry);
-		    topologyEvents.drainTo(collection);
+            //
+            // The main loop
+            //
+            try {
+                while (true) {
+                    EventEntry<TopologyEvent> eventEntry = topologyEvents.take();
+                    collection.add(eventEntry);
+                    topologyEvents.drainTo(collection);
 
-		    processEvents(collection);
-		    collection.clear();
-		}
-	    } catch (Exception exception) {
-		log.debug("Exception processing Topology Events: ", exception);
-	    }
-	}
+                    processEvents(collection);
+                    collection.clear();
+                }
+            } catch (Exception exception) {
+                log.debug("Exception processing Topology Events: ", exception);
+            }
+        }
 
-	/**
-	 * Process all topology events.
-	 *
-	 * @param events the events to process.
-	 */
-	private void processEvents(Collection<EventEntry<TopologyEvent>> events) {
-	    // Local state for computing the final set of events
-	    Map<ByteBuffer, SwitchEvent> addedSwitchEvents = new HashMap<>();
-	    Map<ByteBuffer, SwitchEvent> removedSwitchEvents = new HashMap<>();
-	    Map<ByteBuffer, PortEvent> addedPortEvents = new HashMap<>();
-	    Map<ByteBuffer, PortEvent> removedPortEvents = new HashMap<>();
-	    Map<ByteBuffer, LinkEvent> addedLinkEvents = new HashMap<>();
-	    Map<ByteBuffer, LinkEvent> removedLinkEvents = new HashMap<>();
-	    Map<ByteBuffer, DeviceEvent> addedDeviceEvents = new HashMap<>();
-	    Map<ByteBuffer, DeviceEvent> removedDeviceEvents = new HashMap<>();
+        /**
+         * Process all topology events.
+         *
+         * @param events the events to process.
+         */
+        private void processEvents(Collection<EventEntry<TopologyEvent>> events) {
+            // Local state for computing the final set of events
+            Map<ByteBuffer, SwitchEvent> addedSwitchEvents = new HashMap<>();
+            Map<ByteBuffer, SwitchEvent> removedSwitchEvents = new HashMap<>();
+            Map<ByteBuffer, PortEvent> addedPortEvents = new HashMap<>();
+            Map<ByteBuffer, PortEvent> removedPortEvents = new HashMap<>();
+            Map<ByteBuffer, LinkEvent> addedLinkEvents = new HashMap<>();
+            Map<ByteBuffer, LinkEvent> removedLinkEvents = new HashMap<>();
+            Map<ByteBuffer, DeviceEvent> addedDeviceEvents = new HashMap<>();
+            Map<ByteBuffer, DeviceEvent> removedDeviceEvents = new HashMap<>();
 
-	    //
-	    // Classify and suppress matching events
-	    //
-	    for (EventEntry<TopologyEvent> event : events) {
-		TopologyEvent topologyEvent = event.eventData();
-		SwitchEvent switchEvent = topologyEvent.switchEvent;
-		PortEvent portEvent = topologyEvent.portEvent;
-		LinkEvent linkEvent = topologyEvent.linkEvent;
-		DeviceEvent deviceEvent = topologyEvent.deviceEvent;
+            //
+            // Classify and suppress matching events
+            //
+            for (EventEntry<TopologyEvent> event : events) {
+                TopologyEvent topologyEvent = event.eventData();
+                SwitchEvent switchEvent = topologyEvent.switchEvent;
+                PortEvent portEvent = topologyEvent.portEvent;
+                LinkEvent linkEvent = topologyEvent.linkEvent;
+                DeviceEvent deviceEvent = topologyEvent.deviceEvent;
 
-		//
-		// Extract the events
-		//
-		switch (event.eventType()) {
-		case ENTRY_ADD:
-		    log.debug("Topology event ENTRY_ADD: {}", topologyEvent);
-		    if (switchEvent != null) {
-			ByteBuffer id = switchEvent.getIDasByteBuffer();
-			addedSwitchEvents.put(id, switchEvent);
-			removedSwitchEvents.remove(id);
-			// Switch Events are not affected by event reordering
-		    }
-		    if (portEvent != null) {
-			ByteBuffer id = portEvent.getIDasByteBuffer();
-			addedPortEvents.put(id, portEvent);
-			removedPortEvents.remove(id);
-			reorderedAddedPortEvents.remove(id);
-		    }
-		    if (linkEvent != null) {
-			ByteBuffer id = linkEvent.getIDasByteBuffer();
-			addedLinkEvents.put(id, linkEvent);
-			removedLinkEvents.remove(id);
-			reorderedAddedLinkEvents.remove(id);
-		    }
-		    if (deviceEvent != null) {
-			ByteBuffer id = deviceEvent.getIDasByteBuffer();
-			addedDeviceEvents.put(id, deviceEvent);
-			removedDeviceEvents.remove(id);
-			reorderedAddedDeviceEvents.remove(id);
-		    }
-		    break;
-		case ENTRY_REMOVE:
-		    log.debug("Topology event ENTRY_REMOVE: {}", topologyEvent);
-		    if (switchEvent != null) {
-			ByteBuffer id = switchEvent.getIDasByteBuffer();
-			addedSwitchEvents.remove(id);
-			removedSwitchEvents.put(id, switchEvent);
-			// Switch Events are not affected by event reordering
-		    }
-		    if (portEvent != null) {
-			ByteBuffer id = portEvent.getIDasByteBuffer();
-			addedPortEvents.remove(id);
-			removedPortEvents.put(id, portEvent);
-			reorderedAddedPortEvents.remove(id);
-		    }
-		    if (linkEvent != null) {
-			ByteBuffer id = linkEvent.getIDasByteBuffer();
-			addedLinkEvents.remove(id);
-			removedLinkEvents.put(id, linkEvent);
-			reorderedAddedLinkEvents.remove(id);
-		    }
-		    if (deviceEvent != null) {
-			ByteBuffer id = deviceEvent.getIDasByteBuffer();
-			addedDeviceEvents.remove(id);
-			removedDeviceEvents.put(id, deviceEvent);
-			reorderedAddedDeviceEvents.remove(id);
-		    }
-		    break;
-		}
-	    }
+                //
+                // Extract the events
+                //
+                switch (event.eventType()) {
+                    case ENTRY_ADD:
+                        log.debug("Topology event ENTRY_ADD: {}", topologyEvent);
+                        if (switchEvent != null) {
+                            ByteBuffer id = switchEvent.getIDasByteBuffer();
+                            addedSwitchEvents.put(id, switchEvent);
+                            removedSwitchEvents.remove(id);
+                            // Switch Events are not affected by event reordering
+                        }
+                        if (portEvent != null) {
+                            ByteBuffer id = portEvent.getIDasByteBuffer();
+                            addedPortEvents.put(id, portEvent);
+                            removedPortEvents.remove(id);
+                            reorderedAddedPortEvents.remove(id);
+                        }
+                        if (linkEvent != null) {
+                            ByteBuffer id = linkEvent.getIDasByteBuffer();
+                            addedLinkEvents.put(id, linkEvent);
+                            removedLinkEvents.remove(id);
+                            reorderedAddedLinkEvents.remove(id);
+                        }
+                        if (deviceEvent != null) {
+                            ByteBuffer id = deviceEvent.getIDasByteBuffer();
+                            addedDeviceEvents.put(id, deviceEvent);
+                            removedDeviceEvents.remove(id);
+                            reorderedAddedDeviceEvents.remove(id);
+                        }
+                        break;
+                    case ENTRY_REMOVE:
+                        log.debug("Topology event ENTRY_REMOVE: {}", topologyEvent);
+                        if (switchEvent != null) {
+                            ByteBuffer id = switchEvent.getIDasByteBuffer();
+                            addedSwitchEvents.remove(id);
+                            removedSwitchEvents.put(id, switchEvent);
+                            // Switch Events are not affected by event reordering
+                        }
+                        if (portEvent != null) {
+                            ByteBuffer id = portEvent.getIDasByteBuffer();
+                            addedPortEvents.remove(id);
+                            removedPortEvents.put(id, portEvent);
+                            reorderedAddedPortEvents.remove(id);
+                        }
+                        if (linkEvent != null) {
+                            ByteBuffer id = linkEvent.getIDasByteBuffer();
+                            addedLinkEvents.remove(id);
+                            removedLinkEvents.put(id, linkEvent);
+                            reorderedAddedLinkEvents.remove(id);
+                        }
+                        if (deviceEvent != null) {
+                            ByteBuffer id = deviceEvent.getIDasByteBuffer();
+                            addedDeviceEvents.remove(id);
+                            removedDeviceEvents.put(id, deviceEvent);
+                            reorderedAddedDeviceEvents.remove(id);
+                        }
+                        break;
+                }
+            }
 
-	    //
-	    // Lock the Network Graph while it is modified
-	    //
-	    networkGraph.acquireWriteLock();
+            //
+            // Lock the Network Graph while it is modified
+            //
+            networkGraph.acquireWriteLock();
 
-	    try {
-    	    	//
-		// Apply the classified events.
-		//
-		// Apply the "add" events in the proper order:
-		//   switch, port, link, device
-		//
-    	    	for (SwitchEvent switchEvent : addedSwitchEvents.values())
-    	    	    addSwitch(switchEvent);
-    	    	for (PortEvent portEvent : addedPortEvents.values())
-    	    	    addPort(portEvent);
-    	    	for (LinkEvent linkEvent : addedLinkEvents.values())
-    	    	    addLink(linkEvent);
-    	    	for (DeviceEvent deviceEvent : addedDeviceEvents.values())
-    	    	    addDevice(deviceEvent);
-    	    	//
-    	    	// Apply the "remove" events in the reverse order:
-    	    	//   device, link, port, switch
-    	    	//
-    	    	for (DeviceEvent deviceEvent : removedDeviceEvents.values())
-    	    	    removeDevice(deviceEvent);
-    	    	for (LinkEvent linkEvent : removedLinkEvents.values())
-    	    	    removeLink(linkEvent);
-    	    	for (PortEvent portEvent : removedPortEvents.values())
-    	    	    removePort(portEvent);
-    	    	for (SwitchEvent switchEvent : removedSwitchEvents.values())
-    	    	    removeSwitch(switchEvent);
+            try {
+                //
+                // Apply the classified events.
+                //
+                // Apply the "add" events in the proper order:
+                //   switch, port, link, device
+                //
+                for (SwitchEvent switchEvent : addedSwitchEvents.values())
+                    addSwitch(switchEvent);
+                for (PortEvent portEvent : addedPortEvents.values())
+                    addPort(portEvent);
+                for (LinkEvent linkEvent : addedLinkEvents.values())
+                    addLink(linkEvent);
+                for (DeviceEvent deviceEvent : addedDeviceEvents.values())
+                    addDevice(deviceEvent);
+                //
+                // Apply the "remove" events in the reverse order:
+                //   device, link, port, switch
+                //
+                for (DeviceEvent deviceEvent : removedDeviceEvents.values())
+                    removeDevice(deviceEvent);
+                for (LinkEvent linkEvent : removedLinkEvents.values())
+                    removeLink(linkEvent);
+                for (PortEvent portEvent : removedPortEvents.values())
+                    removePort(portEvent);
+                for (SwitchEvent switchEvent : removedSwitchEvents.values())
+                    removeSwitch(switchEvent);
 
-    	    	//
-    	    	// Apply reordered events
-    	    	//
-    	    	applyReorderedEvents(! addedSwitchEvents.isEmpty(),
-    	    				! addedPortEvents.isEmpty());
+                //
+                // Apply reordered events
+                //
+                applyReorderedEvents(!addedSwitchEvents.isEmpty(),
+                        !addedPortEvents.isEmpty());
 
-	    }
-    	    finally {
-    		//
-    		// Network Graph modifications completed: Release the lock
-    		//
-    		networkGraph.releaseWriteLock();
-	    }
+            } finally {
+                //
+                // Network Graph modifications completed: Release the lock
+                //
+                networkGraph.releaseWriteLock();
+            }
 
-	    //
-	    // Dispatch the Topology Notification Events to the applications
-	    //
-	    dispatchNetworkGraphEvents();
-	}
+            //
+            // Dispatch the Topology Notification Events to the applications
+            //
+            dispatchNetworkGraphEvents();
+        }
 
-	/**
-	 * Receive a notification that an entry is added.
-	 *
-	 * @param value the value for the entry.
-	 */
-	@Override
-	public void entryAdded(TopologyEvent value) {
-	    EventEntry<TopologyEvent> eventEntry =
-		new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
-					      value);
-	    topologyEvents.add(eventEntry);
-	}
+        /**
+         * Receive a notification that an entry is added.
+         *
+         * @param value the value for the entry.
+         */
+        @Override
+        public void entryAdded(TopologyEvent value) {
+            EventEntry<TopologyEvent> eventEntry =
+                    new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
+                            value);
+            topologyEvents.add(eventEntry);
+        }
 
-	/**
-	 * Receive a notification that an entry is removed.
-	 *
-	 * @param value the value for the entry.
-	 */
-	@Override
-	public void entryRemoved(TopologyEvent value) {
-	    EventEntry<TopologyEvent> eventEntry =
-		new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_REMOVE,
-					      value);
-	    topologyEvents.add(eventEntry);
-	}
+        /**
+         * Receive a notification that an entry is removed.
+         *
+         * @param value the value for the entry.
+         */
+        @Override
+        public void entryRemoved(TopologyEvent value) {
+            EventEntry<TopologyEvent> eventEntry =
+                    new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_REMOVE,
+                            value);
+            topologyEvents.add(eventEntry);
+        }
 
-	/**
-	 * Receive a notification that an entry is updated.
-	 *
-	 * @param value the value for the entry.
-	 */
-	@Override
-	public void entryUpdated(TopologyEvent value) {
-	    // NOTE: The ADD and UPDATE events are processed in same way
-	    entryAdded(value);
-	}
+        /**
+         * Receive a notification that an entry is updated.
+         *
+         * @param value the value for the entry.
+         */
+        @Override
+        public void entryUpdated(TopologyEvent value) {
+            // NOTE: The ADD and UPDATE events are processed in same way
+            entryAdded(value);
+        }
     }
 
     /**
@@ -364,175 +362,175 @@
      * @param datagridService the datagrid service to use.
      */
     void startup(IDatagridService datagridService) {
-	eventChannel = datagridService.addListener(EVENT_CHANNEL_NAME,
-						   eventHandler,
-						   byte[].class,
-						   TopologyEvent.class);
-	eventHandler.start();
+        eventChannel = datagridService.addListener(EVENT_CHANNEL_NAME,
+                eventHandler,
+                byte[].class,
+                TopologyEvent.class);
+        eventHandler.start();
     }
 
     /**
      * Dispatch Network Graph Events to the listeners.
      */
     private void dispatchNetworkGraphEvents() {
-	if (apiAddedSwitchEvents.isEmpty() &&
-	    apiRemovedSwitchEvents.isEmpty() &&
-	    apiAddedPortEvents.isEmpty() &&
-	    apiRemovedPortEvents.isEmpty() &&
-	    apiAddedLinkEvents.isEmpty() &&
-	    apiRemovedLinkEvents.isEmpty() &&
-	    apiAddedDeviceEvents.isEmpty() &&
-	    apiRemovedDeviceEvents.isEmpty()) {
-	    return;		// No events to dispatch
-	}
+        if (apiAddedSwitchEvents.isEmpty() &&
+                apiRemovedSwitchEvents.isEmpty() &&
+                apiAddedPortEvents.isEmpty() &&
+                apiRemovedPortEvents.isEmpty() &&
+                apiAddedLinkEvents.isEmpty() &&
+                apiRemovedLinkEvents.isEmpty() &&
+                apiAddedDeviceEvents.isEmpty() &&
+                apiRemovedDeviceEvents.isEmpty()) {
+            return;        // No events to dispatch
+        }
 
-	if (log.isDebugEnabled()) {
-	    //
-	    // Debug statements
-	    // TODO: Those statements should be removed in the future
-	    //
-	    for (SwitchEvent switchEvent : apiAddedSwitchEvents)
-		log.debug("Dispatch Network Graph Event: ADDED {}", switchEvent);
-	    for (SwitchEvent switchEvent : apiRemovedSwitchEvents)
-		log.debug("Dispatch Network Graph Event: REMOVED {}", switchEvent);
-	    for (PortEvent portEvent : apiAddedPortEvents)
-		log.debug("Dispatch Network Graph Event: ADDED {}", portEvent);
-	    for (PortEvent portEvent : apiRemovedPortEvents)
-		log.debug("Dispatch Network Graph Event: REMOVED {}", portEvent);
-	    for (LinkEvent linkEvent : apiAddedLinkEvents)
-		log.debug("Dispatch Network Graph Event: ADDED {}", linkEvent);
-	    for (LinkEvent linkEvent : apiRemovedLinkEvents)
-		log.debug("Dispatch Network Graph Event: REMOVED {}", linkEvent);
-	    for (DeviceEvent deviceEvent : apiAddedDeviceEvents)
-		log.debug("Dispatch Network Graph Event: ADDED {}", deviceEvent);
-	    for (DeviceEvent deviceEvent : apiRemovedDeviceEvents)
-		log.debug("Dispatch Network Graph Event: REMOVED {}", deviceEvent);
-	}
+        if (log.isDebugEnabled()) {
+            //
+            // Debug statements
+            // TODO: Those statements should be removed in the future
+            //
+            for (SwitchEvent switchEvent : apiAddedSwitchEvents)
+                log.debug("Dispatch Network Graph Event: ADDED {}", switchEvent);
+            for (SwitchEvent switchEvent : apiRemovedSwitchEvents)
+                log.debug("Dispatch Network Graph Event: REMOVED {}", switchEvent);
+            for (PortEvent portEvent : apiAddedPortEvents)
+                log.debug("Dispatch Network Graph Event: ADDED {}", portEvent);
+            for (PortEvent portEvent : apiRemovedPortEvents)
+                log.debug("Dispatch Network Graph Event: REMOVED {}", portEvent);
+            for (LinkEvent linkEvent : apiAddedLinkEvents)
+                log.debug("Dispatch Network Graph Event: ADDED {}", linkEvent);
+            for (LinkEvent linkEvent : apiRemovedLinkEvents)
+                log.debug("Dispatch Network Graph Event: REMOVED {}", linkEvent);
+            for (DeviceEvent deviceEvent : apiAddedDeviceEvents)
+                log.debug("Dispatch Network Graph Event: ADDED {}", deviceEvent);
+            for (DeviceEvent deviceEvent : apiRemovedDeviceEvents)
+                log.debug("Dispatch Network Graph Event: REMOVED {}", deviceEvent);
+        }
 
-	// Deliver the events
-	for (INetworkGraphListener listener : this.networkGraphListeners) {
-	    // TODO: Should copy before handing them over to listener?
-	    listener.networkGraphEvents(apiAddedSwitchEvents,
-					apiRemovedSwitchEvents,
-					apiAddedPortEvents,
-					apiRemovedPortEvents,
-					apiAddedLinkEvents,
-					apiRemovedLinkEvents,
-					apiAddedDeviceEvents,
-					apiRemovedDeviceEvents);
-	}
+        // Deliver the events
+        for (INetworkGraphListener listener : this.networkGraphListeners) {
+            // TODO: Should copy before handing them over to listener?
+            listener.networkGraphEvents(apiAddedSwitchEvents,
+                    apiRemovedSwitchEvents,
+                    apiAddedPortEvents,
+                    apiRemovedPortEvents,
+                    apiAddedLinkEvents,
+                    apiRemovedLinkEvents,
+                    apiAddedDeviceEvents,
+                    apiRemovedDeviceEvents);
+        }
 
-	//
-	// Cleanup
-	//
-	apiAddedSwitchEvents.clear();
-	apiRemovedSwitchEvents.clear();
-	apiAddedPortEvents.clear();
-	apiRemovedPortEvents.clear();
-	apiAddedLinkEvents.clear();
-	apiRemovedLinkEvents.clear();
-	apiAddedDeviceEvents.clear();
-	apiRemovedDeviceEvents.clear();
+        //
+        // Cleanup
+        //
+        apiAddedSwitchEvents.clear();
+        apiRemovedSwitchEvents.clear();
+        apiAddedPortEvents.clear();
+        apiRemovedPortEvents.clear();
+        apiAddedLinkEvents.clear();
+        apiRemovedLinkEvents.clear();
+        apiAddedDeviceEvents.clear();
+        apiRemovedDeviceEvents.clear();
     }
 
     /**
      * Apply reordered events.
      *
      * @param hasAddedSwitchEvents true if there were Added Switch Events.
-     * @param hasAddedPortEvents true if there were Added Port Events.
+     * @param hasAddedPortEvents   true if there were Added Port Events.
      */
     private void applyReorderedEvents(boolean hasAddedSwitchEvents,
-				      boolean hasAddedPortEvents) {
-	if (! (hasAddedSwitchEvents || hasAddedPortEvents))
-	    return;		// Nothing to do
+                                      boolean hasAddedPortEvents) {
+        if (!(hasAddedSwitchEvents || hasAddedPortEvents))
+            return;        // Nothing to do
 
-	//
-	// Try to apply the reordered events.
-	//
-	// NOTE: For simplicity we try to apply all events of a particular
-	// type if any "parent" type event was processed:
-	//  - Apply reordered Port Events if Switches were added
-	//  - Apply reordered Link and Device Events if Switches or Ports
-	//    were added
-	//
+        //
+        // Try to apply the reordered events.
+        //
+        // NOTE: For simplicity we try to apply all events of a particular
+        // type if any "parent" type event was processed:
+        //  - Apply reordered Port Events if Switches were added
+        //  - Apply reordered Link and Device Events if Switches or Ports
+        //    were added
+        //
 
-	//
-	// Apply reordered Port Events if Switches were added
-	//
-	if (hasAddedSwitchEvents) {
-	    Map<ByteBuffer, PortEvent> portEvents = reorderedAddedPortEvents;
-	    reorderedAddedPortEvents = new HashMap<>();
-	    for (PortEvent portEvent : portEvents.values())
-		addPort(portEvent);
-	}
-	//
-	// Apply reordered Link and Device Events if Switches or Ports
-	// were added.
-	//
-	Map<ByteBuffer, LinkEvent> linkEvents = reorderedAddedLinkEvents;
-	reorderedAddedLinkEvents = new HashMap<>();
-	for (LinkEvent linkEvent : linkEvents.values())
-	    addLink(linkEvent);
-	//
-	Map<ByteBuffer, DeviceEvent> deviceEvents = reorderedAddedDeviceEvents;
-	reorderedAddedDeviceEvents = new HashMap<>();
-	for (DeviceEvent deviceEvent : deviceEvents.values())
-	    addDevice(deviceEvent);
+        //
+        // Apply reordered Port Events if Switches were added
+        //
+        if (hasAddedSwitchEvents) {
+            Map<ByteBuffer, PortEvent> portEvents = reorderedAddedPortEvents;
+            reorderedAddedPortEvents = new HashMap<>();
+            for (PortEvent portEvent : portEvents.values())
+                addPort(portEvent);
+        }
+        //
+        // Apply reordered Link and Device Events if Switches or Ports
+        // were added.
+        //
+        Map<ByteBuffer, LinkEvent> linkEvents = reorderedAddedLinkEvents;
+        reorderedAddedLinkEvents = new HashMap<>();
+        for (LinkEvent linkEvent : linkEvents.values())
+            addLink(linkEvent);
+        //
+        Map<ByteBuffer, DeviceEvent> deviceEvents = reorderedAddedDeviceEvents;
+        reorderedAddedDeviceEvents = new HashMap<>();
+        for (DeviceEvent deviceEvent : deviceEvents.values())
+            addDevice(deviceEvent);
     }
 
     /**
      * Switch discovered event.
      *
      * @param switchEvent the switch event.
-     * @param portEvents the corresponding port events for the switch.
+     * @param portEvents  the corresponding port events for the switch.
      */
     @Override
     public void putSwitchDiscoveryEvent(SwitchEvent switchEvent,
-					Collection<PortEvent> portEvents) {
-	if (datastore.addSwitch(switchEvent, portEvents)) {
-	    // Send out notification
-	    TopologyEvent topologyEvent = new TopologyEvent(switchEvent);
-	    eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
-	    
-	    // Send out notification for each port
-	    for (PortEvent portEvent : portEvents) {
-		topologyEvent = new TopologyEvent(portEvent);
-		eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
-	    }
+                                        Collection<PortEvent> portEvents) {
+        if (datastore.addSwitch(switchEvent, portEvents)) {
+            // Send out notification
+            TopologyEvent topologyEvent = new TopologyEvent(switchEvent);
+            eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
 
-	    //
-	    // Keep track of the added ports
-	    //
-	    // Get the old Port Events
-	    Map<ByteBuffer, PortEvent> oldPortEvents =
-		discoveredAddedPortEvents.get(switchEvent.getDpid());
-	    if (oldPortEvents == null)
-		oldPortEvents = new HashMap<>();
+            // Send out notification for each port
+            for (PortEvent portEvent : portEvents) {
+                topologyEvent = new TopologyEvent(portEvent);
+                eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
+            }
 
-	    // Store the new Port Events in the local cache
-	    Map<ByteBuffer, PortEvent> newPortEvents = new HashMap<>();
-	    for (PortEvent portEvent : portEvents) {
-		ByteBuffer id = portEvent.getIDasByteBuffer();
-		newPortEvents.put(id, portEvent);
-	    }
-	    discoveredAddedPortEvents.put(switchEvent.getDpid(),
-					  newPortEvents);
+            //
+            // Keep track of the added ports
+            //
+            // Get the old Port Events
+            Map<ByteBuffer, PortEvent> oldPortEvents =
+                    discoveredAddedPortEvents.get(switchEvent.getDpid());
+            if (oldPortEvents == null)
+                oldPortEvents = new HashMap<>();
 
-	    //
-	    // Extract the removed ports
-	    //
-	    List<PortEvent> removedPortEvents = new LinkedList<>();
-	    for (Map.Entry<ByteBuffer, PortEvent> entry : oldPortEvents.entrySet()) {
-		ByteBuffer key = entry.getKey();
-		PortEvent portEvent = entry.getValue();
-		if (! newPortEvents.containsKey(key))
-		    removedPortEvents.add(portEvent);
-	    }
+            // Store the new Port Events in the local cache
+            Map<ByteBuffer, PortEvent> newPortEvents = new HashMap<>();
+            for (PortEvent portEvent : portEvents) {
+                ByteBuffer id = portEvent.getIDasByteBuffer();
+                newPortEvents.put(id, portEvent);
+            }
+            discoveredAddedPortEvents.put(switchEvent.getDpid(),
+                    newPortEvents);
 
-	    // Cleanup old removed ports
-	    for (PortEvent portEvent : removedPortEvents)
-		removePortDiscoveryEvent(portEvent);
-	}
+            //
+            // Extract the removed ports
+            //
+            List<PortEvent> removedPortEvents = new LinkedList<>();
+            for (Map.Entry<ByteBuffer, PortEvent> entry : oldPortEvents.entrySet()) {
+                ByteBuffer key = entry.getKey();
+                PortEvent portEvent = entry.getValue();
+                if (!newPortEvents.containsKey(key))
+                    removedPortEvents.add(portEvent);
+            }
+
+            // Cleanup old removed ports
+            for (PortEvent portEvent : removedPortEvents)
+                removePortDiscoveryEvent(portEvent);
+        }
     }
 
     /**
@@ -542,47 +540,47 @@
      */
     @Override
     public void removeSwitchDiscoveryEvent(SwitchEvent switchEvent) {
-	// Get the old Port Events
-	Map<ByteBuffer, PortEvent> oldPortEvents =
-	    discoveredAddedPortEvents.get(switchEvent.getDpid());
-	if (oldPortEvents == null)
-	    oldPortEvents = new HashMap<>();
+        // Get the old Port Events
+        Map<ByteBuffer, PortEvent> oldPortEvents =
+                discoveredAddedPortEvents.get(switchEvent.getDpid());
+        if (oldPortEvents == null)
+            oldPortEvents = new HashMap<>();
 
-	if (datastore.deactivateSwitch(switchEvent, oldPortEvents.values())) {
-	    // Send out notification
-	    eventChannel.removeEntry(switchEvent.getID());
+        if (datastore.deactivateSwitch(switchEvent, oldPortEvents.values())) {
+            // Send out notification
+            eventChannel.removeEntry(switchEvent.getID());
 
-	    //
-	    // Send out notification for each port.
-	    //
-	    // NOTE: We don't use removePortDiscoveryEvent() for the cleanup,
-	    // because it will attempt to remove the port from the database,
-	    // and the deactiveSwitch() call above already removed all ports.
-	    //
-	    for (PortEvent portEvent : oldPortEvents.values())
-		eventChannel.removeEntry(portEvent.getID());
-	    discoveredAddedPortEvents.remove(switchEvent.getDpid());
+            //
+            // Send out notification for each port.
+            //
+            // NOTE: We don't use removePortDiscoveryEvent() for the cleanup,
+            // because it will attempt to remove the port from the database,
+            // and the deactiveSwitch() call above already removed all ports.
+            //
+            for (PortEvent portEvent : oldPortEvents.values())
+                eventChannel.removeEntry(portEvent.getID());
+            discoveredAddedPortEvents.remove(switchEvent.getDpid());
 
-	    // Cleanup for each link
-	    Map<ByteBuffer, LinkEvent> oldLinkEvents =
-		discoveredAddedLinkEvents.get(switchEvent.getDpid());
-	    if (oldLinkEvents != null) {
-		for (LinkEvent linkEvent : new ArrayList<>(oldLinkEvents.values())) {
-		    removeLinkDiscoveryEvent(linkEvent);
-		}
-		discoveredAddedLinkEvents.remove(switchEvent.getDpid());
-	    }
+            // Cleanup for each link
+            Map<ByteBuffer, LinkEvent> oldLinkEvents =
+                    discoveredAddedLinkEvents.get(switchEvent.getDpid());
+            if (oldLinkEvents != null) {
+                for (LinkEvent linkEvent : new ArrayList<>(oldLinkEvents.values())) {
+                    removeLinkDiscoveryEvent(linkEvent);
+                }
+                discoveredAddedLinkEvents.remove(switchEvent.getDpid());
+            }
 
-	    // Cleanup for each device
-	    Map<ByteBuffer, DeviceEvent> oldDeviceEvents =
-		discoveredAddedDeviceEvents.get(switchEvent.getDpid());
-	    if (oldDeviceEvents != null) {
-		for (DeviceEvent deviceEvent : new ArrayList<>(oldDeviceEvents.values())) {
-		    removeDeviceDiscoveryEvent(deviceEvent);
-		}
-		discoveredAddedDeviceEvents.remove(switchEvent.getDpid());
-	    }
-	}
+            // Cleanup for each device
+            Map<ByteBuffer, DeviceEvent> oldDeviceEvents =
+                    discoveredAddedDeviceEvents.get(switchEvent.getDpid());
+            if (oldDeviceEvents != null) {
+                for (DeviceEvent deviceEvent : new ArrayList<>(oldDeviceEvents.values())) {
+                    removeDeviceDiscoveryEvent(deviceEvent);
+                }
+                discoveredAddedDeviceEvents.remove(switchEvent.getDpid());
+            }
+        }
     }
 
     /**
@@ -592,22 +590,22 @@
      */
     @Override
     public void putPortDiscoveryEvent(PortEvent portEvent) {
-	if (datastore.addPort(portEvent)) {
-	    // Send out notification
-	    TopologyEvent topologyEvent = new TopologyEvent(portEvent);
-	    eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
+        if (datastore.addPort(portEvent)) {
+            // Send out notification
+            TopologyEvent topologyEvent = new TopologyEvent(portEvent);
+            eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
 
-	    // Store the new Port Event in the local cache
-	    Map<ByteBuffer, PortEvent> oldPortEvents =
-		discoveredAddedPortEvents.get(portEvent.getDpid());
-	    if (oldPortEvents == null) {
-		oldPortEvents = new HashMap<>();
-		discoveredAddedPortEvents.put(portEvent.getDpid(),
-					      oldPortEvents);
-	    }
-	    ByteBuffer id = portEvent.getIDasByteBuffer();
-	    oldPortEvents.put(id, portEvent);
-	}
+            // Store the new Port Event in the local cache
+            Map<ByteBuffer, PortEvent> oldPortEvents =
+                    discoveredAddedPortEvents.get(portEvent.getDpid());
+            if (oldPortEvents == null) {
+                oldPortEvents = new HashMap<>();
+                discoveredAddedPortEvents.put(portEvent.getDpid(),
+                        oldPortEvents);
+            }
+            ByteBuffer id = portEvent.getIDasByteBuffer();
+            oldPortEvents.put(id, portEvent);
+        }
     }
 
     /**
@@ -617,49 +615,49 @@
      */
     @Override
     public void removePortDiscoveryEvent(PortEvent portEvent) {
-	if (datastore.deactivatePort(portEvent)) {
-	    // Send out notification
-	    eventChannel.removeEntry(portEvent.getID());
+        if (datastore.deactivatePort(portEvent)) {
+            // Send out notification
+            eventChannel.removeEntry(portEvent.getID());
 
-	    // Cleanup the Port Event from the local cache
-	    Map<ByteBuffer, PortEvent> oldPortEvents =
-		discoveredAddedPortEvents.get(portEvent.getDpid());
-	    if (oldPortEvents != null) {
-		ByteBuffer id = portEvent.getIDasByteBuffer();
-		oldPortEvents.remove(id);
-	    }
+            // Cleanup the Port Event from the local cache
+            Map<ByteBuffer, PortEvent> oldPortEvents =
+                    discoveredAddedPortEvents.get(portEvent.getDpid());
+            if (oldPortEvents != null) {
+                ByteBuffer id = portEvent.getIDasByteBuffer();
+                oldPortEvents.remove(id);
+            }
 
-	    // Cleanup for the incoming link
-	    Map<ByteBuffer, LinkEvent> oldLinkEvents =
-		discoveredAddedLinkEvents.get(portEvent.getDpid());
-	    if (oldLinkEvents != null) {
-		for (LinkEvent linkEvent : new ArrayList<>(oldLinkEvents.values())) {
-		    if (linkEvent.getDst().equals(portEvent.id)) {
-			removeLinkDiscoveryEvent(linkEvent);
-			// XXX If we change our model to allow multiple Link on
-			// a Port, this loop must be fixed to allow continuing.
-			break;
-		    }
-		}
-	    }
+            // Cleanup for the incoming link
+            Map<ByteBuffer, LinkEvent> oldLinkEvents =
+                    discoveredAddedLinkEvents.get(portEvent.getDpid());
+            if (oldLinkEvents != null) {
+                for (LinkEvent linkEvent : new ArrayList<>(oldLinkEvents.values())) {
+                    if (linkEvent.getDst().equals(portEvent.id)) {
+                        removeLinkDiscoveryEvent(linkEvent);
+                        // XXX If we change our model to allow multiple Link on
+                        // a Port, this loop must be fixed to allow continuing.
+                        break;
+                    }
+                }
+            }
 
-	    // Cleanup for the connected devices
-	    // TODO: The implementation below is probably wrong
-	    List<DeviceEvent> removedDeviceEvents = new LinkedList<>();
-	    Map<ByteBuffer, DeviceEvent> oldDeviceEvents =
-		discoveredAddedDeviceEvents.get(portEvent.getDpid());
-	    if (oldDeviceEvents != null) {
-		for (DeviceEvent deviceEvent : new ArrayList<>(oldDeviceEvents.values())) {
-		    for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
-			if (swp.equals(portEvent.id)) {
-			    removedDeviceEvents.add(deviceEvent);
-			}
-		    }
-		}
-		for (DeviceEvent deviceEvent : removedDeviceEvents)
-		    removeDeviceDiscoveryEvent(deviceEvent);
-	    }
-	}
+            // Cleanup for the connected devices
+            // TODO: The implementation below is probably wrong
+            List<DeviceEvent> removedDeviceEvents = new LinkedList<>();
+            Map<ByteBuffer, DeviceEvent> oldDeviceEvents =
+                    discoveredAddedDeviceEvents.get(portEvent.getDpid());
+            if (oldDeviceEvents != null) {
+                for (DeviceEvent deviceEvent : new ArrayList<>(oldDeviceEvents.values())) {
+                    for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
+                        if (swp.equals(portEvent.id)) {
+                            removedDeviceEvents.add(deviceEvent);
+                        }
+                    }
+                }
+                for (DeviceEvent deviceEvent : removedDeviceEvents)
+                    removeDeviceDiscoveryEvent(deviceEvent);
+            }
+        }
     }
 
     /**
@@ -669,22 +667,22 @@
      */
     @Override
     public void putLinkDiscoveryEvent(LinkEvent linkEvent) {
-	if (datastore.addLink(linkEvent)) {
-	    // Send out notification
-	    TopologyEvent topologyEvent = new TopologyEvent(linkEvent);
-	    eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
+        if (datastore.addLink(linkEvent)) {
+            // Send out notification
+            TopologyEvent topologyEvent = new TopologyEvent(linkEvent);
+            eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
 
-	    // Store the new Link Event in the local cache
-	    Map<ByteBuffer, LinkEvent> oldLinkEvents =
-		discoveredAddedLinkEvents.get(linkEvent.getDst().getDpid());
-	    if (oldLinkEvents == null) {
-		oldLinkEvents = new HashMap<>();
-		discoveredAddedLinkEvents.put(linkEvent.getDst().getDpid(),
-					      oldLinkEvents);
-	    }
-	    ByteBuffer id = linkEvent.getIDasByteBuffer();
-	    oldLinkEvents.put(id, linkEvent);
-	}
+            // Store the new Link Event in the local cache
+            Map<ByteBuffer, LinkEvent> oldLinkEvents =
+                    discoveredAddedLinkEvents.get(linkEvent.getDst().getDpid());
+            if (oldLinkEvents == null) {
+                oldLinkEvents = new HashMap<>();
+                discoveredAddedLinkEvents.put(linkEvent.getDst().getDpid(),
+                        oldLinkEvents);
+            }
+            ByteBuffer id = linkEvent.getIDasByteBuffer();
+            oldLinkEvents.put(id, linkEvent);
+        }
     }
 
     /**
@@ -694,18 +692,18 @@
      */
     @Override
     public void removeLinkDiscoveryEvent(LinkEvent linkEvent) {
-	if (datastore.removeLink(linkEvent)) {
-	    // Send out notification
-	    eventChannel.removeEntry(linkEvent.getID());
+        if (datastore.removeLink(linkEvent)) {
+            // Send out notification
+            eventChannel.removeEntry(linkEvent.getID());
 
-	    // Cleanup the Link Event from the local cache
-	    Map<ByteBuffer, LinkEvent> oldLinkEvents =
-		discoveredAddedLinkEvents.get(linkEvent.getDst().getDpid());
-	    if (oldLinkEvents != null) {
-		ByteBuffer id = linkEvent.getIDasByteBuffer();
-		oldLinkEvents.remove(id);
-	    }
-	}
+            // Cleanup the Link Event from the local cache
+            Map<ByteBuffer, LinkEvent> oldLinkEvents =
+                    discoveredAddedLinkEvents.get(linkEvent.getDst().getDpid());
+            if (oldLinkEvents != null) {
+                ByteBuffer id = linkEvent.getIDasByteBuffer();
+                oldLinkEvents.remove(id);
+            }
+        }
     }
 
     /**
@@ -715,26 +713,26 @@
      */
     @Override
     public void putDeviceDiscoveryEvent(DeviceEvent deviceEvent) {
-	if (datastore.addDevice(deviceEvent)) {
-	    // Send out notification
-	    TopologyEvent topologyEvent = new TopologyEvent(deviceEvent);
-	    eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
-	    log.debug("Put the device info into the cache of the graph. mac {}", deviceEvent.getMac());
-	    
-	    // Store the new Device Event in the local cache
-	    // TODO: The implementation below is probably wrong
-	    for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
-		Map<ByteBuffer, DeviceEvent> oldDeviceEvents =
-		    discoveredAddedDeviceEvents.get(swp.getDpid());
-		if (oldDeviceEvents == null) {
-		    oldDeviceEvents = new HashMap<>();
-		    discoveredAddedDeviceEvents.put(swp.getDpid(),
-						    oldDeviceEvents);
-		}
-		ByteBuffer id = deviceEvent.getIDasByteBuffer();
-		oldDeviceEvents.put(id, deviceEvent);
-	    }
-	}
+        if (datastore.addDevice(deviceEvent)) {
+            // Send out notification
+            TopologyEvent topologyEvent = new TopologyEvent(deviceEvent);
+            eventChannel.addEntry(topologyEvent.getID(), topologyEvent);
+            log.debug("Put the device info into the cache of the graph. mac {}", deviceEvent.getMac());
+
+            // Store the new Device Event in the local cache
+            // TODO: The implementation below is probably wrong
+            for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
+                Map<ByteBuffer, DeviceEvent> oldDeviceEvents =
+                        discoveredAddedDeviceEvents.get(swp.getDpid());
+                if (oldDeviceEvents == null) {
+                    oldDeviceEvents = new HashMap<>();
+                    discoveredAddedDeviceEvents.put(swp.getDpid(),
+                            oldDeviceEvents);
+                }
+                ByteBuffer id = deviceEvent.getIDasByteBuffer();
+                oldDeviceEvents.put(id, deviceEvent);
+            }
+        }
     }
 
     /**
@@ -744,22 +742,22 @@
      */
     @Override
     public void removeDeviceDiscoveryEvent(DeviceEvent deviceEvent) {
-	if (datastore.removeDevice(deviceEvent)) {
-	    // Send out notification
-	    eventChannel.removeEntry(deviceEvent.getID());
-	    log.debug("Remove the device info into the cache of the graph. mac {}", deviceEvent.getMac());
+        if (datastore.removeDevice(deviceEvent)) {
+            // Send out notification
+            eventChannel.removeEntry(deviceEvent.getID());
+            log.debug("Remove the device info into the cache of the graph. mac {}", deviceEvent.getMac());
 
-	    // Cleanup the Device Event from the local cache
-	    // TODO: The implementation below is probably wrong
-	    ByteBuffer id = ByteBuffer.wrap(deviceEvent.getID());
-	    for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
-		Map<ByteBuffer, DeviceEvent> oldDeviceEvents =
-		    discoveredAddedDeviceEvents.get(swp.getDpid());
-		if (oldDeviceEvents != null) {
-		    oldDeviceEvents.remove(id);
-		}
-	    }
-	}
+            // Cleanup the Device Event from the local cache
+            // TODO: The implementation below is probably wrong
+            ByteBuffer id = ByteBuffer.wrap(deviceEvent.getID());
+            for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
+                Map<ByteBuffer, DeviceEvent> oldDeviceEvents =
+                        discoveredAddedDeviceEvents.get(swp.getDpid());
+                if (oldDeviceEvents != null) {
+                    oldDeviceEvents.remove(id);
+                }
+            }
+        }
     }
 
     /**
@@ -768,15 +766,15 @@
      * @param switchEvent the Switch Event with the switch to add.
      */
     private void addSwitch(SwitchEvent switchEvent) {
-	Switch sw = networkGraph.getSwitch(switchEvent.getDpid());
-	if (sw == null) {
-	    sw = new SwitchImpl(networkGraph, switchEvent.getDpid());
-	    networkGraph.putSwitch(sw);
-	} else {
-	    // TODO: Update the switch attributes
-	    // TODO: Nothing to do for now
-	}
-	apiAddedSwitchEvents.add(switchEvent);
+        Switch sw = networkGraph.getSwitch(switchEvent.getDpid());
+        if (sw == null) {
+            sw = new SwitchImpl(networkGraph, switchEvent.getDpid());
+            networkGraph.putSwitch(sw);
+        } else {
+            // TODO: Update the switch attributes
+            // TODO: Nothing to do for now
+        }
+        apiAddedSwitchEvents.add(switchEvent);
     }
 
     /**
@@ -785,28 +783,28 @@
      * @param switchEvent the Switch Event with the switch to remove.
      */
     private void removeSwitch(SwitchEvent switchEvent) {
-	Switch sw = networkGraph.getSwitch(switchEvent.getDpid());
-	if (sw == null) {
-	    log.warn("Switch {} already removed, ignoring", switchEvent);
-	    return;
-	}
+        Switch sw = networkGraph.getSwitch(switchEvent.getDpid());
+        if (sw == null) {
+            log.warn("Switch {} already removed, ignoring", switchEvent);
+            return;
+        }
 
-	//
-	// Remove all Ports on the Switch
-	//
-	ArrayList<PortEvent> portsToRemove = new ArrayList<>();
-	for (Port port : sw.getPorts()) {
-	    log.warn("Port {} on Switch {} should be removed prior to removing Switch. Removing Port now.",
-		     port, switchEvent);
-	    PortEvent portEvent = new PortEvent(port.getDpid(),
-						port.getNumber());
-	    portsToRemove.add(portEvent);
-	}
-	for (PortEvent portEvent : portsToRemove)
-	    removePort(portEvent);
+        //
+        // Remove all Ports on the Switch
+        //
+        ArrayList<PortEvent> portsToRemove = new ArrayList<>();
+        for (Port port : sw.getPorts()) {
+            log.warn("Port {} on Switch {} should be removed prior to removing Switch. Removing Port now.",
+                    port, switchEvent);
+            PortEvent portEvent = new PortEvent(port.getDpid(),
+                    port.getNumber());
+            portsToRemove.add(portEvent);
+        }
+        for (PortEvent portEvent : portsToRemove)
+            removePort(portEvent);
 
-	networkGraph.removeSwitch(switchEvent.getDpid());
-	apiRemovedSwitchEvents.add(switchEvent);
+        networkGraph.removeSwitch(switchEvent.getDpid());
+        apiRemovedSwitchEvents.add(switchEvent);
     }
 
     /**
@@ -815,23 +813,23 @@
      * @param portEvent the Port Event with the port to add.
      */
     private void addPort(PortEvent portEvent) {
-	Switch sw = networkGraph.getSwitch(portEvent.getDpid());
-	if (sw == null) {
-	    // Reordered event: delay the event in local cache
-	    ByteBuffer id = portEvent.getIDasByteBuffer();
-	    reorderedAddedPortEvents.put(id, portEvent);
-	    return;
-	}
-	SwitchImpl switchImpl = getSwitchImpl(sw);
+        Switch sw = networkGraph.getSwitch(portEvent.getDpid());
+        if (sw == null) {
+            // Reordered event: delay the event in local cache
+            ByteBuffer id = portEvent.getIDasByteBuffer();
+            reorderedAddedPortEvents.put(id, portEvent);
+            return;
+        }
+        SwitchImpl switchImpl = getSwitchImpl(sw);
 
-	Port port = sw.getPort(portEvent.getNumber());
-	if (port == null) {
-	    port = new PortImpl(networkGraph, sw, portEvent.getNumber());
-	    switchImpl.addPort(port);
-	} else {
-	    // TODO: Update the port attributes
-	}
-	apiAddedPortEvents.add(portEvent);
+        Port port = sw.getPort(portEvent.getNumber());
+        if (port == null) {
+            port = new PortImpl(networkGraph, sw, portEvent.getNumber());
+            switchImpl.addPort(port);
+        } else {
+            // TODO: Update the port attributes
+        }
+        apiAddedPortEvents.add(portEvent);
     }
 
     /**
@@ -840,59 +838,59 @@
      * @param portEvent the Port Event with the port to remove.
      */
     private void removePort(PortEvent portEvent) {
-	Switch sw = networkGraph.getSwitch(portEvent.getDpid());
-	if (sw == null) {
-	    log.warn("Parent Switch for Port {} already removed, ignoring",
-		     portEvent);
-	    return;
-	}
+        Switch sw = networkGraph.getSwitch(portEvent.getDpid());
+        if (sw == null) {
+            log.warn("Parent Switch for Port {} already removed, ignoring",
+                    portEvent);
+            return;
+        }
 
-	Port port = sw.getPort(portEvent.getNumber());
-	if (port == null) {
-	    log.warn("Port {} already removed, ignoring", portEvent);
-	    return;
-	}
+        Port port = sw.getPort(portEvent.getNumber());
+        if (port == null) {
+            log.warn("Port {} already removed, ignoring", portEvent);
+            return;
+        }
 
-	//
-	// Remove all Devices attached to the Port
-	//
-	ArrayList<DeviceEvent> devicesToRemove = new ArrayList<>();
-	for (Device device : port.getDevices()) {
-	    log.debug("Removing Device {} on Port {}", device, portEvent);
-	    DeviceEvent deviceEvent = new DeviceEvent(device.getMacAddress());
-	    SwitchPort switchPort = new SwitchPort(port.getSwitch().getDpid(),
-						   port.getNumber());
-	    deviceEvent.addAttachmentPoint(switchPort);
-	    devicesToRemove.add(deviceEvent);
-	}
-	for (DeviceEvent deviceEvent : devicesToRemove)
-	    removeDevice(deviceEvent);
+        //
+        // Remove all Devices attached to the Port
+        //
+        ArrayList<DeviceEvent> devicesToRemove = new ArrayList<>();
+        for (Device device : port.getDevices()) {
+            log.debug("Removing Device {} on Port {}", device, portEvent);
+            DeviceEvent deviceEvent = new DeviceEvent(device.getMacAddress());
+            SwitchPort switchPort = new SwitchPort(port.getSwitch().getDpid(),
+                    port.getNumber());
+            deviceEvent.addAttachmentPoint(switchPort);
+            devicesToRemove.add(deviceEvent);
+        }
+        for (DeviceEvent deviceEvent : devicesToRemove)
+            removeDevice(deviceEvent);
 
-	//
-	// Remove all Links connected to the Port
-	//
-	Set<Link> links = new HashSet<>();
-	links.add(port.getOutgoingLink());
-	links.add(port.getIncomingLink());
-	ArrayList<LinkEvent> linksToRemove = new ArrayList<>();
-	for (Link link : links) {
-	    if (link == null)
-		continue;
-	    log.debug("Removing Link {} on Port {}", link, portEvent);
-	    LinkEvent linkEvent = new LinkEvent(link.getSrcSwitch().getDpid(),
-						link.getSrcPort().getNumber(),
-						link.getDstSwitch().getDpid(),
-						link.getDstPort().getNumber());
-	    linksToRemove.add(linkEvent);
-	}
-	for (LinkEvent linkEvent : linksToRemove)
-	    removeLink(linkEvent);
+        //
+        // Remove all Links connected to the Port
+        //
+        Set<Link> links = new HashSet<>();
+        links.add(port.getOutgoingLink());
+        links.add(port.getIncomingLink());
+        ArrayList<LinkEvent> linksToRemove = new ArrayList<>();
+        for (Link link : links) {
+            if (link == null)
+                continue;
+            log.debug("Removing Link {} on Port {}", link, portEvent);
+            LinkEvent linkEvent = new LinkEvent(link.getSrcSwitch().getDpid(),
+                    link.getSrcPort().getNumber(),
+                    link.getDstSwitch().getDpid(),
+                    link.getDstPort().getNumber());
+            linksToRemove.add(linkEvent);
+        }
+        for (LinkEvent linkEvent : linksToRemove)
+            removeLink(linkEvent);
 
-	// Remove the Port from the Switch
-	SwitchImpl switchImpl = getSwitchImpl(sw);
-	switchImpl.removePort(port);
+        // Remove the Port from the Switch
+        SwitchImpl switchImpl = getSwitchImpl(sw);
+        switchImpl.removePort(port);
 
-	apiRemovedPortEvents.add(portEvent);
+        apiRemovedPortEvents.add(portEvent);
     }
 
     /**
@@ -901,52 +899,52 @@
      * @param linkEvent the Link Event with the link to add.
      */
     private void addLink(LinkEvent linkEvent) {
-	Port srcPort = networkGraph.getPort(linkEvent.getSrc().dpid,
-					    linkEvent.getSrc().number);
-	Port dstPort = networkGraph.getPort(linkEvent.getDst().dpid,
-					    linkEvent.getDst().number);
-	if ((srcPort == null) || (dstPort == null)) {
-	    // Reordered event: delay the event in local cache
-	    ByteBuffer id = linkEvent.getIDasByteBuffer();
-	    reorderedAddedLinkEvents.put(id, linkEvent);
-	    return;
-	}
+        Port srcPort = networkGraph.getPort(linkEvent.getSrc().dpid,
+                linkEvent.getSrc().number);
+        Port dstPort = networkGraph.getPort(linkEvent.getDst().dpid,
+                linkEvent.getDst().number);
+        if ((srcPort == null) || (dstPort == null)) {
+            // Reordered event: delay the event in local cache
+            ByteBuffer id = linkEvent.getIDasByteBuffer();
+            reorderedAddedLinkEvents.put(id, linkEvent);
+            return;
+        }
 
-	// Get the Link instance from the Destination Port Incoming Link
-	Link link = dstPort.getIncomingLink();
-	assert(link == srcPort.getOutgoingLink());
-	if (link == null) {
-	    link = new LinkImpl(networkGraph, srcPort, dstPort);
-	    PortImpl srcPortImpl = getPortImpl(srcPort);
-	    PortImpl dstPortImpl = getPortImpl(dstPort);
-	    srcPortImpl.setOutgoingLink(link);
-	    dstPortImpl.setIncomingLink(link);
+        // Get the Link instance from the Destination Port Incoming Link
+        Link link = dstPort.getIncomingLink();
+        assert (link == srcPort.getOutgoingLink());
+        if (link == null) {
+            link = new LinkImpl(networkGraph, srcPort, dstPort);
+            PortImpl srcPortImpl = getPortImpl(srcPort);
+            PortImpl dstPortImpl = getPortImpl(dstPort);
+            srcPortImpl.setOutgoingLink(link);
+            dstPortImpl.setIncomingLink(link);
 
-	    // Remove all Devices attached to the Ports
-	    ArrayList<DeviceEvent> devicesToRemove = new ArrayList<>();
-	    ArrayList<Port> ports = new ArrayList<>();
-	    ports.add(srcPort);
-	    ports.add(dstPort);
-	    for (Port port : ports) {
-		for (Device device : port.getDevices()) {
-		    log.error("Device {} on Port {} should have been removed prior to adding Link {}",
-			      device, port, linkEvent);
-		    DeviceEvent deviceEvent =
-			new DeviceEvent(device.getMacAddress());
-		    SwitchPort switchPort =
-			new SwitchPort(port.getSwitch().getDpid(),
-				       port.getNumber());
-		    deviceEvent.addAttachmentPoint(switchPort);
-		    devicesToRemove.add(deviceEvent);
-		}
-	    }
-	    for (DeviceEvent deviceEvent : devicesToRemove)
-		removeDevice(deviceEvent);
-	} else {
-	    // TODO: Update the link attributes
-	}
+            // Remove all Devices attached to the Ports
+            ArrayList<DeviceEvent> devicesToRemove = new ArrayList<>();
+            ArrayList<Port> ports = new ArrayList<>();
+            ports.add(srcPort);
+            ports.add(dstPort);
+            for (Port port : ports) {
+                for (Device device : port.getDevices()) {
+                    log.error("Device {} on Port {} should have been removed prior to adding Link {}",
+                            device, port, linkEvent);
+                    DeviceEvent deviceEvent =
+                            new DeviceEvent(device.getMacAddress());
+                    SwitchPort switchPort =
+                            new SwitchPort(port.getSwitch().getDpid(),
+                                    port.getNumber());
+                    deviceEvent.addAttachmentPoint(switchPort);
+                    devicesToRemove.add(deviceEvent);
+                }
+            }
+            for (DeviceEvent deviceEvent : devicesToRemove)
+                removeDevice(deviceEvent);
+        } else {
+            // TODO: Update the link attributes
+        }
 
-	apiAddedLinkEvents.add(linkEvent);
+        apiAddedLinkEvents.add(linkEvent);
     }
 
     /**
@@ -955,43 +953,43 @@
      * @param linkEvent the Link Event with the link to remove.
      */
     private void removeLink(LinkEvent linkEvent) {
-	Port srcPort = networkGraph.getPort(linkEvent.getSrc().dpid,
-					    linkEvent.getSrc().number);
-	if (srcPort == null) {
-	    log.warn("Src Port for Link {} already removed, ignoring",
-		     linkEvent);
-	    return;
-	}
+        Port srcPort = networkGraph.getPort(linkEvent.getSrc().dpid,
+                linkEvent.getSrc().number);
+        if (srcPort == null) {
+            log.warn("Src Port for Link {} already removed, ignoring",
+                    linkEvent);
+            return;
+        }
 
-	Port dstPort = networkGraph.getPort(linkEvent.getDst().dpid,
-					    linkEvent.getDst().number);
-	if (dstPort == null) {
-	    log.warn("Dst Port for Link {} already removed, ignoring",
-		     linkEvent);
-	    return;
-	}
+        Port dstPort = networkGraph.getPort(linkEvent.getDst().dpid,
+                linkEvent.getDst().number);
+        if (dstPort == null) {
+            log.warn("Dst Port for Link {} already removed, ignoring",
+                    linkEvent);
+            return;
+        }
 
-	//
-	// Remove the Link instance from the Destination Port Incoming Link
-	// and the Source Port Outgoing Link.
-	//
-	Link link = dstPort.getIncomingLink();
-	if (link == null) {
-	    log.warn("Link {} already removed on destination Port", linkEvent);
-	}
-	link = srcPort.getOutgoingLink();
-	if (link == null) {
-	    log.warn("Link {} already removed on src Port", linkEvent);
-	}
-	getPortImpl(dstPort).setIncomingLink(null);
-	getPortImpl(srcPort).setOutgoingLink(null);
+        //
+        // Remove the Link instance from the Destination Port Incoming Link
+        // and the Source Port Outgoing Link.
+        //
+        Link link = dstPort.getIncomingLink();
+        if (link == null) {
+            log.warn("Link {} already removed on destination Port", linkEvent);
+        }
+        link = srcPort.getOutgoingLink();
+        if (link == null) {
+            log.warn("Link {} already removed on src Port", linkEvent);
+        }
+        getPortImpl(dstPort).setIncomingLink(null);
+        getPortImpl(srcPort).setOutgoingLink(null);
 
-	apiRemovedLinkEvents.add(linkEvent);
+        apiRemovedLinkEvents.add(linkEvent);
     }
 
     /**
      * Add a device to the Network Graph.
-     *
+     * <p/>
      * TODO: Device-related work is incomplete.
      * TODO: Eventually, we might need to consider reordering
      * or addLink() and addDevice() events on the same port.
@@ -999,86 +997,86 @@
      * @param deviceEvent the Device Event with the device to add.
      */
     private void addDevice(DeviceEvent deviceEvent) {
-	Device device = networkGraph.getDeviceByMac(deviceEvent.getMac());
-	
-	if (device == null) {
-		log.debug("Existing device was not found in networkGraph. New device. mac {}", deviceEvent.getMac());
-	    device = new DeviceImpl(networkGraph, deviceEvent.getMac());
-	}
-	
-	DeviceImpl deviceImpl = getDeviceImpl(device);
+        Device device = networkGraph.getDeviceByMac(deviceEvent.getMac());
 
-	// Update the IP addresses
-	for (InetAddress ipAddr : deviceEvent.getIpAddresses())
-	    deviceImpl.addIpAddress(ipAddr);
+        if (device == null) {
+            log.debug("Existing device was not found in networkGraph. New device. mac {}", deviceEvent.getMac());
+            device = new DeviceImpl(networkGraph, deviceEvent.getMac());
+        }
 
-	// Process each attachment point
-	boolean attachmentFound = false;
-	for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
-	    // Attached Ports must exist
-	    Port port = networkGraph.getPort(swp.dpid, swp.number);
-	    if (port == null) {
-		// Reordered event: delay the event in local cache
-		ByteBuffer id = deviceEvent.getIDasByteBuffer();
-		reorderedAddedDeviceEvents.put(id, deviceEvent);
-		continue;
-	    }
-	    // Attached Ports must not have Link
-	    if (port.getOutgoingLink() != null ||
-		port.getIncomingLink() != null) {
-		log.warn("Link (Out:{},In:{}) exist on the attachment point, skipping mutation.",
-			 port.getOutgoingLink(),
-			 port.getIncomingLink());
-		continue;
-	    }
+        DeviceImpl deviceImpl = getDeviceImpl(device);
 
-	    // Add Device <-> Port attachment
-	    PortImpl portImpl = getPortImpl(port);
-	    portImpl.addDevice(device);
-	    deviceImpl.addAttachmentPoint(port);
-	    attachmentFound = true;
-	}
+        // Update the IP addresses
+        for (InetAddress ipAddr : deviceEvent.getIpAddresses())
+            deviceImpl.addIpAddress(ipAddr);
 
-	// Update the device in the Network Graph
-	if (attachmentFound) {
-    	log.debug("Storing the info into networkGraph. mac {}", deviceEvent.getMac());
-	    networkGraph.putDevice(device);
-	    apiAddedDeviceEvents.add(deviceEvent);
-	}
+        // Process each attachment point
+        boolean attachmentFound = false;
+        for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
+            // Attached Ports must exist
+            Port port = networkGraph.getPort(swp.dpid, swp.number);
+            if (port == null) {
+                // Reordered event: delay the event in local cache
+                ByteBuffer id = deviceEvent.getIDasByteBuffer();
+                reorderedAddedDeviceEvents.put(id, deviceEvent);
+                continue;
+            }
+            // Attached Ports must not have Link
+            if (port.getOutgoingLink() != null ||
+                    port.getIncomingLink() != null) {
+                log.warn("Link (Out:{},In:{}) exist on the attachment point, skipping mutation.",
+                        port.getOutgoingLink(),
+                        port.getIncomingLink());
+                continue;
+            }
+
+            // Add Device <-> Port attachment
+            PortImpl portImpl = getPortImpl(port);
+            portImpl.addDevice(device);
+            deviceImpl.addAttachmentPoint(port);
+            attachmentFound = true;
+        }
+
+        // Update the device in the Network Graph
+        if (attachmentFound) {
+            log.debug("Storing the info into networkGraph. mac {}", deviceEvent.getMac());
+            networkGraph.putDevice(device);
+            apiAddedDeviceEvents.add(deviceEvent);
+        }
     }
 
     /**
      * Remove a device from the Network Graph.
-     *
+     * <p/>
      * TODO: Device-related work is incomplete.
      *
      * @param deviceEvent the Device Event with the device to remove.
      */
     private void removeDevice(DeviceEvent deviceEvent) {
-	Device device = networkGraph.getDeviceByMac(deviceEvent.getMac());
-	if (device == null) {
-	    log.warn("Device {} already removed, ignoring", deviceEvent);
-	    return;
-	}
-	DeviceImpl deviceImpl = getDeviceImpl(device);
+        Device device = networkGraph.getDeviceByMac(deviceEvent.getMac());
+        if (device == null) {
+            log.warn("Device {} already removed, ignoring", deviceEvent);
+            return;
+        }
+        DeviceImpl deviceImpl = getDeviceImpl(device);
 
-	// Process each attachment point
-	for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
-	    // Attached Ports must exist
-	    Port port = networkGraph.getPort(swp.dpid, swp.number);
-	    if (port == null) {
-		log.warn("Port for the attachment point {} did not exist. skipping attachment point mutation", swp);
-		continue;
-	    }
+        // Process each attachment point
+        for (SwitchPort swp : deviceEvent.getAttachmentPoints()) {
+            // Attached Ports must exist
+            Port port = networkGraph.getPort(swp.dpid, swp.number);
+            if (port == null) {
+                log.warn("Port for the attachment point {} did not exist. skipping attachment point mutation", swp);
+                continue;
+            }
 
-	    // Remove Device <-> Port attachment
-	    PortImpl portImpl = getPortImpl(port);
-	    portImpl.removeDevice(device);
-	    deviceImpl.removeAttachmentPoint(port);
-	}
+            // Remove Device <-> Port attachment
+            PortImpl portImpl = getPortImpl(port);
+            portImpl.removeDevice(device);
+            deviceImpl.removeAttachmentPoint(port);
+        }
 
-	networkGraph.removeDevice(device);
-	apiRemovedDeviceEvents.add(deviceEvent);
+        networkGraph.removeDevice(device);
+        apiRemovedDeviceEvents.add(deviceEvent);
     }
 
     /**
@@ -1088,10 +1086,10 @@
      * @return the SwitchImpl-casted switch implementation.
      */
     private SwitchImpl getSwitchImpl(Switch sw) {
-	if (sw instanceof SwitchImpl) {
-	    return (SwitchImpl)sw;
-	}
-	throw new ClassCastException("SwitchImpl expected, but found: " + sw);
+        if (sw instanceof SwitchImpl) {
+            return (SwitchImpl) sw;
+        }
+        throw new ClassCastException("SwitchImpl expected, but found: " + sw);
     }
 
     /**
@@ -1101,10 +1099,10 @@
      * @return the PortImpl-casted port implementation.
      */
     private PortImpl getPortImpl(Port port) {
-	if (port instanceof PortImpl) {
-	    return (PortImpl)port;
-	}
-	throw new ClassCastException("PortImpl expected, but found: " + port);
+        if (port instanceof PortImpl) {
+            return (PortImpl) port;
+        }
+        throw new ClassCastException("PortImpl expected, but found: " + port);
     }
 
     /**
@@ -1114,10 +1112,10 @@
      * @return the LinkImpl-casted link implementation.
      */
     private LinkImpl getLinkImpl(Link link) {
-	if (link instanceof LinkImpl) {
-	    return (LinkImpl)link;
-	}
-	throw new ClassCastException("LinkImpl expected, but found: " + link);
+        if (link instanceof LinkImpl) {
+            return (LinkImpl) link;
+        }
+        throw new ClassCastException("LinkImpl expected, but found: " + link);
     }
 
     /**
@@ -1127,10 +1125,10 @@
      * @return the DeviceImpl-casted device implementation.
      */
     private DeviceImpl getDeviceImpl(Device device) {
-	if (device instanceof DeviceImpl) {
-	    return (DeviceImpl)device;
-	}
-	throw new ClassCastException("DeviceImpl expected, but found: " + device);
+        if (device instanceof DeviceImpl) {
+            return (DeviceImpl) device;
+        }
+        throw new ClassCastException("DeviceImpl expected, but found: " + device);
     }
 
     /**
@@ -1140,60 +1138,60 @@
      * the whole topology.
      */
     private Collection<EventEntry<TopologyEvent>> readWholeTopologyFromDB() {
-	Collection<EventEntry<TopologyEvent>> collection =
-	    new LinkedList<EventEntry<TopologyEvent>>();
+        Collection<EventEntry<TopologyEvent>> collection =
+                new LinkedList<EventEntry<TopologyEvent>>();
 
-	// XXX May need to clear whole topology first, depending on
-	// how we initially subscribe to replication events
+        // XXX May need to clear whole topology first, depending on
+        // how we initially subscribe to replication events
 
-	// Add all active switches
-	for (KVSwitch sw : KVSwitch.getAllSwitches()) {
-	    if (sw.getStatus() != KVSwitch.STATUS.ACTIVE) {
-		continue;
-	    }
+        // Add all active switches
+        for (KVSwitch sw : KVSwitch.getAllSwitches()) {
+            if (sw.getStatus() != KVSwitch.STATUS.ACTIVE) {
+                continue;
+            }
 
-	    SwitchEvent switchEvent = new SwitchEvent(sw.getDpid());
-	    TopologyEvent topologyEvent = new TopologyEvent(switchEvent);
-	    EventEntry<TopologyEvent> eventEntry =
-		new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
-					      topologyEvent);
-	    collection.add(eventEntry);
-	}
+            SwitchEvent switchEvent = new SwitchEvent(sw.getDpid());
+            TopologyEvent topologyEvent = new TopologyEvent(switchEvent);
+            EventEntry<TopologyEvent> eventEntry =
+                    new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
+                            topologyEvent);
+            collection.add(eventEntry);
+        }
 
-	// Add all active ports
-	for (KVPort p : KVPort.getAllPorts()) {
-	    if (p.getStatus() != KVPort.STATUS.ACTIVE) {
-		continue;
-	    }
+        // Add all active ports
+        for (KVPort p : KVPort.getAllPorts()) {
+            if (p.getStatus() != KVPort.STATUS.ACTIVE) {
+                continue;
+            }
 
-	    PortEvent portEvent = new PortEvent(p.getDpid(), p.getNumber());
-	    TopologyEvent topologyEvent = new TopologyEvent(portEvent);
-	    EventEntry<TopologyEvent> eventEntry =
-		new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
-					      topologyEvent);
-	    collection.add(eventEntry);
-	}
+            PortEvent portEvent = new PortEvent(p.getDpid(), p.getNumber());
+            TopologyEvent topologyEvent = new TopologyEvent(portEvent);
+            EventEntry<TopologyEvent> eventEntry =
+                    new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
+                            topologyEvent);
+            collection.add(eventEntry);
+        }
 
-	// TODO Is Device going to be in DB? If so, read from DB.
-	//	for (KVDevice d : KVDevice.getAllDevices()) {
-	//	    DeviceEvent devEvent = new DeviceEvent( MACAddress.valueOf(d.getMac()) );
-	//	    for (byte[] portId : d.getAllPortIds() ) {
-	//		devEvent.addAttachmentPoint( new SwitchPort( KVPort.getDpidFromKey(portId), KVPort.getNumberFromKey(portId) ));
-	//	    }
-	//	}
+        // TODO Is Device going to be in DB? If so, read from DB.
+        //      for (KVDevice d : KVDevice.getAllDevices()) {
+        //          DeviceEvent devEvent = new DeviceEvent( MACAddress.valueOf(d.getMac()) );
+        //          for (byte[] portId : d.getAllPortIds() ) {
+        //              devEvent.addAttachmentPoint( new SwitchPort( KVPort.getDpidFromKey(portId), KVPort.getNumberFromKey(portId) ));
+        //          }
+        //      }
 
-	for (KVLink l : KVLink.getAllLinks()) {
-	    LinkEvent linkEvent = new LinkEvent(l.getSrc().dpid,
-						l.getSrc().number,
-						l.getDst().dpid,
-						l.getDst().number);
-	    TopologyEvent topologyEvent = new TopologyEvent(linkEvent);
-	    EventEntry<TopologyEvent> eventEntry =
-		new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
-					      topologyEvent);
-	    collection.add(eventEntry);
-	}
+        for (KVLink l : KVLink.getAllLinks()) {
+            LinkEvent linkEvent = new LinkEvent(l.getSrc().dpid,
+                    l.getSrc().number,
+                    l.getDst().dpid,
+                    l.getDst().number);
+            TopologyEvent topologyEvent = new TopologyEvent(linkEvent);
+            EventEntry<TopologyEvent> eventEntry =
+                    new EventEntry<TopologyEvent>(EventEntry.Type.ENTRY_ADD,
+                            topologyEvent);
+            collection.add(eventEntry);
+        }
 
-	return collection;
+        return collection;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/serializers/LinkSerializer.java b/src/main/java/net/onrc/onos/core/topology/serializers/LinkSerializer.java
index 93bce90..61a3b34 100644
--- a/src/main/java/net/onrc/onos/core/topology/serializers/LinkSerializer.java
+++ b/src/main/java/net/onrc/onos/core/topology/serializers/LinkSerializer.java
@@ -12,24 +12,24 @@
 
 public class LinkSerializer extends SerializerBase<Link> {
 
-	public LinkSerializer() {
-		super(Link.class);
-	}
+    public LinkSerializer() {
+        super(Link.class);
+    }
 
-	@Override
-	public void serialize(Link link, JsonGenerator jsonGenerator, 
-			SerializerProvider serializerProvider)
-			throws IOException, JsonGenerationException {
-		jsonGenerator.writeStartObject();
-		jsonGenerator.writeStringField("src-switch", 
-				HexString.toHexString(link.getSrcSwitch().getDpid()));
-		jsonGenerator.writeNumberField("src-port", 
-				link.getSrcPort().getNumber());
-		jsonGenerator.writeStringField("dst-switch", 
-				HexString.toHexString(link.getDstSwitch().getDpid()));
-		jsonGenerator.writeNumberField("dst-port", 
-				link.getDstPort().getNumber());
-		jsonGenerator.writeEndObject();
-	}
+    @Override
+    public void serialize(Link link, JsonGenerator jsonGenerator,
+                          SerializerProvider serializerProvider)
+            throws IOException, JsonGenerationException {
+        jsonGenerator.writeStartObject();
+        jsonGenerator.writeStringField("src-switch",
+                HexString.toHexString(link.getSrcSwitch().getDpid()));
+        jsonGenerator.writeNumberField("src-port",
+                link.getSrcPort().getNumber());
+        jsonGenerator.writeStringField("dst-switch",
+                HexString.toHexString(link.getDstSwitch().getDpid()));
+        jsonGenerator.writeNumberField("dst-port",
+                link.getDstPort().getNumber());
+        jsonGenerator.writeEndObject();
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/serializers/PortSerializer.java b/src/main/java/net/onrc/onos/core/topology/serializers/PortSerializer.java
index 25e64d0..ae75dff 100644
--- a/src/main/java/net/onrc/onos/core/topology/serializers/PortSerializer.java
+++ b/src/main/java/net/onrc/onos/core/topology/serializers/PortSerializer.java
@@ -11,21 +11,21 @@
 
 public class PortSerializer extends SerializerBase<Port> {
 
-	public PortSerializer() {
-		super(Port.class);
-	}
+    public PortSerializer() {
+        super(Port.class);
+    }
 
-	@Override
-	public void serialize(Port port, JsonGenerator jsonGenerator, 
-			SerializerProvider serializerProvider)
-			throws IOException, JsonProcessingException {
-		jsonGenerator.writeStartObject();
-		jsonGenerator.writeStringField("state", "ACTIVE");
-		jsonGenerator.writeNumberField("number", port.getNumber());
-		jsonGenerator.writeStringField("desc", port.getDescription());
-		jsonGenerator.writeArrayFieldStart("devices");
-		jsonGenerator.writeEndArray();
-		jsonGenerator.writeEndObject();
-	}
+    @Override
+    public void serialize(Port port, JsonGenerator jsonGenerator,
+                          SerializerProvider serializerProvider)
+            throws IOException, JsonProcessingException {
+        jsonGenerator.writeStartObject();
+        jsonGenerator.writeStringField("state", "ACTIVE");
+        jsonGenerator.writeNumberField("number", port.getNumber());
+        jsonGenerator.writeStringField("desc", port.getDescription());
+        jsonGenerator.writeArrayFieldStart("devices");
+        jsonGenerator.writeEndArray();
+        jsonGenerator.writeEndObject();
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/serializers/SwitchSerializer.java b/src/main/java/net/onrc/onos/core/topology/serializers/SwitchSerializer.java
index e36d35c..00bdcad 100644
--- a/src/main/java/net/onrc/onos/core/topology/serializers/SwitchSerializer.java
+++ b/src/main/java/net/onrc/onos/core/topology/serializers/SwitchSerializer.java
@@ -13,24 +13,24 @@
 
 public class SwitchSerializer extends SerializerBase<Switch> {
 
-	public SwitchSerializer() {
-		super(Switch.class);
-	}
+    public SwitchSerializer() {
+        super(Switch.class);
+    }
 
-	@Override
-	public void serialize(Switch sw, JsonGenerator jsonGenerator,
-			SerializerProvider serializerProvider) throws IOException,
-			JsonProcessingException {
-		
-		jsonGenerator.writeStartObject();
-		jsonGenerator.writeStringField("dpid", HexString.toHexString(sw.getDpid()));
-		jsonGenerator.writeStringField("state", "ACTIVE");
-		jsonGenerator.writeArrayFieldStart("ports");
-		for (Port port : sw.getPorts()) {
-			jsonGenerator.writeObject(port);
-		}
-		jsonGenerator.writeEndArray();
-		jsonGenerator.writeEndObject();
-	}
+    @Override
+    public void serialize(Switch sw, JsonGenerator jsonGenerator,
+                          SerializerProvider serializerProvider) throws IOException,
+            JsonProcessingException {
+
+        jsonGenerator.writeStartObject();
+        jsonGenerator.writeStringField("dpid", HexString.toHexString(sw.getDpid()));
+        jsonGenerator.writeStringField("state", "ACTIVE");
+        jsonGenerator.writeArrayFieldStart("ports");
+        for (Port port : sw.getPorts()) {
+            jsonGenerator.writeObject(port);
+        }
+        jsonGenerator.writeEndArray();
+        jsonGenerator.writeEndObject();
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/web/DatastoreLinksResource.java b/src/main/java/net/onrc/onos/core/topology/web/DatastoreLinksResource.java
index 4837055..0f3b85c 100644
--- a/src/main/java/net/onrc/onos/core/topology/web/DatastoreLinksResource.java
+++ b/src/main/java/net/onrc/onos/core/topology/web/DatastoreLinksResource.java
@@ -7,8 +7,8 @@
 
 public class DatastoreLinksResource extends ServerResource {
 
-	@Get("json")
-	public Iterable<KVLink> retrieve() {
-		return KVLink.getAllLinks();
-	}
+    @Get("json")
+    public Iterable<KVLink> retrieve() {
+        return KVLink.getAllLinks();
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/web/DatastorePortsResource.java b/src/main/java/net/onrc/onos/core/topology/web/DatastorePortsResource.java
index 46eaf1a..2ffb476 100644
--- a/src/main/java/net/onrc/onos/core/topology/web/DatastorePortsResource.java
+++ b/src/main/java/net/onrc/onos/core/topology/web/DatastorePortsResource.java
@@ -7,8 +7,8 @@
 
 public class DatastorePortsResource extends ServerResource {
 
-	@Get("json")
-	public Iterable<KVPort> retrieve() {
-		return KVPort.getAllPorts();
-	}
+    @Get("json")
+    public Iterable<KVPort> retrieve() {
+        return KVPort.getAllPorts();
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/web/DatastoreSwitchesResource.java b/src/main/java/net/onrc/onos/core/topology/web/DatastoreSwitchesResource.java
index fe2cfcd..9459764 100644
--- a/src/main/java/net/onrc/onos/core/topology/web/DatastoreSwitchesResource.java
+++ b/src/main/java/net/onrc/onos/core/topology/web/DatastoreSwitchesResource.java
@@ -6,10 +6,10 @@
 import org.restlet.resource.ServerResource;
 
 public class DatastoreSwitchesResource extends ServerResource {
-	
-	@Get("json")
-	public Iterable<KVSwitch> retrieve() {
-		return KVSwitch.getAllSwitches();
-	}
+
+    @Get("json")
+    public Iterable<KVSwitch> retrieve() {
+        return KVSwitch.getAllSwitches();
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphLinksResource.java b/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphLinksResource.java
index 5886aa5..8d4bc93 100644
--- a/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphLinksResource.java
+++ b/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphLinksResource.java
@@ -15,29 +15,29 @@
 import org.slf4j.LoggerFactory;
 
 public class NetworkGraphLinksResource extends ServerResource {
-	
-	private static final Logger log = LoggerFactory.getLogger(NetworkGraphLinksResource.class);
 
-	@Get("json")
-	public String retrieve() {
-		INetworkGraphService networkGraphService = (INetworkGraphService) getContext().getAttributes().
-				get(INetworkGraphService.class.getCanonicalName());
-		
-		NetworkGraph graph = networkGraphService.getNetworkGraph();
+    private static final Logger log = LoggerFactory.getLogger(NetworkGraphLinksResource.class);
 
-		ObjectMapper mapper = new ObjectMapper();
-		SimpleModule module = new SimpleModule("module", new Version(1, 0, 0, null));
-		module.addSerializer(new LinkSerializer());
-		mapper.registerModule(module);
-		
-		try {
-			graph.acquireReadLock();
-			return mapper.writeValueAsString(graph.getLinks());
-		} catch (IOException e) {
-			log.error("Error writing link list to JSON", e);
-			return "";
-		} finally {
-		    graph.releaseReadLock();
-		}
-	}
+    @Get("json")
+    public String retrieve() {
+        INetworkGraphService networkGraphService = (INetworkGraphService) getContext().getAttributes().
+                get(INetworkGraphService.class.getCanonicalName());
+
+        NetworkGraph graph = networkGraphService.getNetworkGraph();
+
+        ObjectMapper mapper = new ObjectMapper();
+        SimpleModule module = new SimpleModule("module", new Version(1, 0, 0, null));
+        module.addSerializer(new LinkSerializer());
+        mapper.registerModule(module);
+
+        try {
+            graph.acquireReadLock();
+            return mapper.writeValueAsString(graph.getLinks());
+        } catch (IOException e) {
+            log.error("Error writing link list to JSON", e);
+            return "";
+        } finally {
+            graph.releaseReadLock();
+        }
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphShortestPathResource.java b/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphShortestPathResource.java
index 1d4164b..6650efc 100644
--- a/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphShortestPathResource.java
+++ b/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphShortestPathResource.java
@@ -28,54 +28,54 @@
 
     @Get("json")
     public String retrieve() {
-	INetworkGraphService networkGraphService =
-	    (INetworkGraphService)getContext().getAttributes().
-	    get(INetworkGraphService.class.getCanonicalName());
+        INetworkGraphService networkGraphService =
+                (INetworkGraphService) getContext().getAttributes().
+                        get(INetworkGraphService.class.getCanonicalName());
 
-	NetworkGraph graph = networkGraphService.getNetworkGraph();
+        NetworkGraph graph = networkGraphService.getNetworkGraph();
 
-	ObjectMapper mapper = new ObjectMapper();
-	SimpleModule module = new SimpleModule("module", new Version(1, 0, 0, null));
-	module.addSerializer(new LinkSerializer());
-	mapper.registerModule(module);
+        ObjectMapper mapper = new ObjectMapper();
+        SimpleModule module = new SimpleModule("module", new Version(1, 0, 0, null));
+        module.addSerializer(new LinkSerializer());
+        mapper.registerModule(module);
 
-	//
-	// Fetch the attributes
-	//
-	String srcDpidStr = (String)getRequestAttributes().get("src-dpid");
-	String dstDpidStr = (String)getRequestAttributes().get("dst-dpid");
-	Dpid srcDpid = new Dpid(srcDpidStr);
-	Dpid dstDpid = new Dpid(dstDpidStr);
-	log.debug("Getting Shortest Path {}--{}", srcDpidStr, dstDpidStr);
+        //
+        // Fetch the attributes
+        //
+        String srcDpidStr = (String) getRequestAttributes().get("src-dpid");
+        String dstDpidStr = (String) getRequestAttributes().get("dst-dpid");
+        Dpid srcDpid = new Dpid(srcDpidStr);
+        Dpid dstDpid = new Dpid(dstDpidStr);
+        log.debug("Getting Shortest Path {}--{}", srcDpidStr, dstDpidStr);
 
-	//
-	// Do the Shortest Path computation and return the result: list of
-	// links.
-	//
-	try {
-	    graph.acquireReadLock();
-	    Switch srcSwitch = graph.getSwitch(srcDpid.value());
-	    Switch dstSwitch = graph.getSwitch(dstDpid.value());
-	    if ((srcSwitch == null) || (dstSwitch == null))
-		return "";
-	    ConstrainedBFSTree bfsTree = new ConstrainedBFSTree(srcSwitch);
-	    Path path = bfsTree.getPath(dstSwitch);
-	    List<Link> links = new LinkedList<>();
-	    for (LinkEvent linkEvent : path) {
-		Link link = graph.getLink(linkEvent.getSrc().getDpid(),
-					  linkEvent.getSrc().getNumber(),
-					  linkEvent.getDst().getDpid(),
-					  linkEvent.getDst().getNumber());
-		if (link == null)
-		    return "";
-		links.add(link);
-	    }
-	    return mapper.writeValueAsString(links);
-	} catch (IOException e) {
-	    log.error("Error writing Shortest Path to JSON", e);
-	    return "";
-	} finally {
-	    graph.releaseReadLock();
-	}
+        //
+        // Do the Shortest Path computation and return the result: list of
+        // links.
+        //
+        try {
+            graph.acquireReadLock();
+            Switch srcSwitch = graph.getSwitch(srcDpid.value());
+            Switch dstSwitch = graph.getSwitch(dstDpid.value());
+            if ((srcSwitch == null) || (dstSwitch == null))
+                return "";
+            ConstrainedBFSTree bfsTree = new ConstrainedBFSTree(srcSwitch);
+            Path path = bfsTree.getPath(dstSwitch);
+            List<Link> links = new LinkedList<>();
+            for (LinkEvent linkEvent : path) {
+                Link link = graph.getLink(linkEvent.getSrc().getDpid(),
+                        linkEvent.getSrc().getNumber(),
+                        linkEvent.getDst().getDpid(),
+                        linkEvent.getDst().getNumber());
+                if (link == null)
+                    return "";
+                links.add(link);
+            }
+            return mapper.writeValueAsString(links);
+        } catch (IOException e) {
+            log.error("Error writing Shortest Path to JSON", e);
+            return "";
+        } finally {
+            graph.releaseReadLock();
+        }
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphSwitchesResource.java b/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphSwitchesResource.java
index 059771f..3a053e5 100644
--- a/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphSwitchesResource.java
+++ b/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphSwitchesResource.java
@@ -16,30 +16,30 @@
 import org.slf4j.LoggerFactory;
 
 public class NetworkGraphSwitchesResource extends ServerResource {
-	
-	private static final Logger log = LoggerFactory.getLogger(NetworkGraphSwitchesResource.class);
 
-	@Get("json")
-	public String retrieve() {
-		INetworkGraphService networkGraphService = (INetworkGraphService) getContext().getAttributes().
-				get(INetworkGraphService.class.getCanonicalName());
-		
-		NetworkGraph graph = networkGraphService.getNetworkGraph();
-		
-		ObjectMapper mapper = new ObjectMapper();
-		SimpleModule module = new SimpleModule("module", new Version(1, 0, 0, null));
-		module.addSerializer(new SwitchSerializer());
-		module.addSerializer(new PortSerializer());
-		mapper.registerModule(module);
-		
-		try {
-			graph.acquireReadLock();
-			return mapper.writeValueAsString(graph.getSwitches());
-		} catch (IOException e) {
-			log.error("Error writing switch list to JSON", e);
-			return "";
-		} finally {
-			graph.releaseReadLock();
-		}
-	}
+    private static final Logger log = LoggerFactory.getLogger(NetworkGraphSwitchesResource.class);
+
+    @Get("json")
+    public String retrieve() {
+        INetworkGraphService networkGraphService = (INetworkGraphService) getContext().getAttributes().
+                get(INetworkGraphService.class.getCanonicalName());
+
+        NetworkGraph graph = networkGraphService.getNetworkGraph();
+
+        ObjectMapper mapper = new ObjectMapper();
+        SimpleModule module = new SimpleModule("module", new Version(1, 0, 0, null));
+        module.addSerializer(new SwitchSerializer());
+        module.addSerializer(new PortSerializer());
+        mapper.registerModule(module);
+
+        try {
+            graph.acquireReadLock();
+            return mapper.writeValueAsString(graph.getSwitches());
+        } catch (IOException e) {
+            log.error("Error writing switch list to JSON", e);
+            return "";
+        } finally {
+            graph.releaseReadLock();
+        }
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphWebRoutable.java b/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphWebRoutable.java
index c6791e5..8f32f8a 100644
--- a/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphWebRoutable.java
+++ b/src/main/java/net/onrc/onos/core/topology/web/NetworkGraphWebRoutable.java
@@ -8,33 +8,33 @@
 
 public class NetworkGraphWebRoutable implements RestletRoutable {
 
-	@Override
-	public Restlet getRestlet(Context context) {
-		Router router = new Router(context);
-		// leaving old path there for compatibility
-		router.attach("/rc/switches/json", DatastoreSwitchesResource.class);
-		router.attach("/rc/links/json", DatastoreLinksResource.class);
-		router.attach("/rc/ports/json", DatastorePortsResource.class);
+    @Override
+    public Restlet getRestlet(Context context) {
+        Router router = new Router(context);
+        // leaving old path there for compatibility
+        router.attach("/rc/switches/json", DatastoreSwitchesResource.class);
+        router.attach("/rc/links/json", DatastoreLinksResource.class);
+        router.attach("/rc/ports/json", DatastorePortsResource.class);
 
-                // debug API to dump datastore content
-                router.attach("/ds/switches/json", DatastoreSwitchesResource.class);
-                router.attach("/ds/links/json", DatastoreLinksResource.class);
-                router.attach("/ds/ports/json", DatastorePortsResource.class);
+        // debug API to dump datastore content
+        router.attach("/ds/switches/json", DatastoreSwitchesResource.class);
+        router.attach("/ds/links/json", DatastoreLinksResource.class);
+        router.attach("/ds/ports/json", DatastorePortsResource.class);
 
-		router.attach("/ng/switches/json", NetworkGraphSwitchesResource.class);
-		router.attach("/ng/links/json", NetworkGraphLinksResource.class);
-		router.attach("/ng/shortest-path/{src-dpid}/{dst-dpid}/json", NetworkGraphShortestPathResource.class);
-		
-		// Old URLs for compatibility
-		router.attach("/topology/switches/json", NetworkGraphSwitchesResource.class);
-		router.attach("/topology/links/json", NetworkGraphLinksResource.class);
-		
-		return router;
-	}
+        router.attach("/ng/switches/json", NetworkGraphSwitchesResource.class);
+        router.attach("/ng/links/json", NetworkGraphLinksResource.class);
+        router.attach("/ng/shortest-path/{src-dpid}/{dst-dpid}/json", NetworkGraphShortestPathResource.class);
 
-	@Override
-	public String basePath() {
-		return "/wm/onos";
-	}
+        // Old URLs for compatibility
+        router.attach("/topology/switches/json", NetworkGraphSwitchesResource.class);
+        router.attach("/topology/links/json", NetworkGraphLinksResource.class);
+
+        return router;
+    }
+
+    @Override
+    public String basePath() {
+        return "/wm/onos";
+    }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/util/CallerId.java b/src/main/java/net/onrc/onos/core/util/CallerId.java
index bcd9704..f58d69f 100644
--- a/src/main/java/net/onrc/onos/core/util/CallerId.java
+++ b/src/main/java/net/onrc/onos/core/util/CallerId.java
@@ -11,15 +11,17 @@
     /**
      * Default constructor.
      */
-    public CallerId() {}
-    
+    public CallerId() {
+    }
+
     /**
      * Copy constructor
+     *
      * @param otherCallerId
      */
     public CallerId(CallerId otherCallerId) {
-    // Note: make a full copy if we change value to a mutable type
-    value = otherCallerId.value;
+        // Note: make a full copy if we change value to a mutable type
+        value = otherCallerId.value;
     }
 
     /**
@@ -28,7 +30,7 @@
      * @param value the value to use.
      */
     public CallerId(String value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -37,7 +39,9 @@
      * @return the value of the Caller ID.
      */
     @JsonProperty("value")
-    public String value() { return value; }
+    public String value() {
+        return value;
+    }
 
     /**
      * Set the value of the Caller ID.
@@ -46,7 +50,7 @@
      */
     @JsonProperty("value")
     public void setValue(String value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -56,22 +60,22 @@
      */
     @Override
     public String toString() {
-	return value;
+        return value;
     }
-    
+
     @Override
     public boolean equals(Object other) {
-    if (!(other instanceof CallerId)) {
-        return false;
+        if (!(other instanceof CallerId)) {
+            return false;
+        }
+
+        CallerId otherCallerId = (CallerId) other;
+
+        return value.equals(otherCallerId.value);
     }
-    
-    CallerId otherCallerId = (CallerId) other;
-    
-    return value.equals(otherCallerId.value);
-    }
-    
+
     @Override
     public int hashCode() {
-    return value.hashCode();
+        return value.hashCode();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/DataPath.java b/src/main/java/net/onrc/onos/core/util/DataPath.java
index 7dd1f51..1aa514c 100644
--- a/src/main/java/net/onrc/onos/core/util/DataPath.java
+++ b/src/main/java/net/onrc/onos/core/util/DataPath.java
@@ -8,17 +8,17 @@
  * The data forwarding path state from a source to a destination.
  */
 public class DataPath {
-    private SwitchPort srcPort;		// The source port
-    private SwitchPort dstPort;		// The destination port
-    private ArrayList<FlowEntry> flowEntries;	// The Flow Entries
+    private SwitchPort srcPort;        // The source port
+    private SwitchPort dstPort;        // The destination port
+    private ArrayList<FlowEntry> flowEntries;    // The Flow Entries
 
     /**
      * Default constructor.
      */
     public DataPath() {
-	srcPort = new SwitchPort();
-	dstPort = new SwitchPort();
-	flowEntries = new ArrayList<FlowEntry>();
+        srcPort = new SwitchPort();
+        dstPort = new SwitchPort();
+        flowEntries = new ArrayList<FlowEntry>();
     }
 
     /**
@@ -27,7 +27,9 @@
      * @return the data path source port.
      */
     @JsonProperty("srcPort")
-    public SwitchPort srcPort() { return srcPort; }
+    public SwitchPort srcPort() {
+        return srcPort;
+    }
 
     /**
      * Set the data path source port.
@@ -36,7 +38,7 @@
      */
     @JsonProperty("srcPort")
     public void setSrcPort(SwitchPort srcPort) {
-	this.srcPort = srcPort;
+        this.srcPort = srcPort;
     }
 
     /**
@@ -45,7 +47,9 @@
      * @return the data path destination port.
      */
     @JsonProperty("dstPort")
-    public SwitchPort dstPort() { return dstPort; }
+    public SwitchPort dstPort() {
+        return dstPort;
+    }
 
     /**
      * Set the data path destination port.
@@ -54,7 +58,7 @@
      */
     @JsonProperty("dstPort")
     public void setDstPort(SwitchPort dstPort) {
-	this.dstPort = dstPort;
+        this.dstPort = dstPort;
     }
 
     /**
@@ -63,7 +67,9 @@
      * @return the data path flow entries.
      */
     @JsonProperty("flowEntries")
-    public ArrayList<FlowEntry> flowEntries() { return flowEntries; }
+    public ArrayList<FlowEntry> flowEntries() {
+        return flowEntries;
+    }
 
     /**
      * Set the data path flow entries.
@@ -72,7 +78,7 @@
      */
     @JsonProperty("flowEntries")
     public void setFlowEntries(ArrayList<FlowEntry> flowEntries) {
-	this.flowEntries = flowEntries;
+        this.flowEntries = flowEntries;
     }
 
     /**
@@ -81,63 +87,63 @@
      * @param flowPathFlags the Flow Path Flags to apply.
      */
     public void applyFlowPathFlags(FlowPathFlags flowPathFlags) {
-	if (flowPathFlags == null)
-	    return;		// Nothing to do
+        if (flowPathFlags == null)
+            return;        // Nothing to do
 
-	// Discard the first Flow Entry
-	if (flowPathFlags.isDiscardFirstHopEntry()) {
-	    if (flowEntries.size() > 0)
-		flowEntries.remove(0);
-	}
+        // Discard the first Flow Entry
+        if (flowPathFlags.isDiscardFirstHopEntry()) {
+            if (flowEntries.size() > 0)
+                flowEntries.remove(0);
+        }
 
-	// Keep only the first Flow Entry
-	if (flowPathFlags.isKeepOnlyFirstHopEntry()) {
-	    if (flowEntries.size() > 1) {
-		FlowEntry flowEntry = flowEntries.get(0);
-		flowEntries.clear();
-		flowEntries.add(flowEntry);
-	    }
-	}
+        // Keep only the first Flow Entry
+        if (flowPathFlags.isKeepOnlyFirstHopEntry()) {
+            if (flowEntries.size() > 1) {
+                FlowEntry flowEntry = flowEntries.get(0);
+                flowEntries.clear();
+                flowEntries.add(flowEntry);
+            }
+        }
     }
 
     /**
      * Remove Flow Entries that were deleted.
      */
     public void removeDeletedFlowEntries() {
-	//
-	// NOTE: We create a new ArrayList, and add only the Flow Entries
-	// that are NOT FE_USER_DELETE.
-	// This is sub-optimal: if it adds notable processing cost,
-	// the Flow Entries container should be changed to LinkedList
-	// or some other container that has O(1) cost of removing an entry.
-	//
+        //
+        // NOTE: We create a new ArrayList, and add only the Flow Entries
+        // that are NOT FE_USER_DELETE.
+        // This is sub-optimal: if it adds notable processing cost,
+        // the Flow Entries container should be changed to LinkedList
+        // or some other container that has O(1) cost of removing an entry.
+        //
 
-	// Test first whether any Flow Entry was deleted
-	boolean foundDeletedFlowEntry = false;
-	for (FlowEntry flowEntry : this.flowEntries) {
-	    if (flowEntry.flowEntryUserState() ==
-		FlowEntryUserState.FE_USER_DELETE) {
-		foundDeletedFlowEntry = true;
-		break;
-	    }
-	}
-	if (! foundDeletedFlowEntry)
-	    return;			// Nothing to do
+        // Test first whether any Flow Entry was deleted
+        boolean foundDeletedFlowEntry = false;
+        for (FlowEntry flowEntry : this.flowEntries) {
+            if (flowEntry.flowEntryUserState() ==
+                    FlowEntryUserState.FE_USER_DELETE) {
+                foundDeletedFlowEntry = true;
+                break;
+            }
+        }
+        if (!foundDeletedFlowEntry)
+            return;            // Nothing to do
 
-	// Create a new collection and exclude the deleted flow entries
-	ArrayList<FlowEntry> newFlowEntries = new ArrayList<FlowEntry>();
-	for (FlowEntry flowEntry : this.flowEntries()) {
-	    if (flowEntry.flowEntryUserState() !=
-		FlowEntryUserState.FE_USER_DELETE) {
-		newFlowEntries.add(flowEntry);
-	    }
-	}
-	setFlowEntries(newFlowEntries);
+        // Create a new collection and exclude the deleted flow entries
+        ArrayList<FlowEntry> newFlowEntries = new ArrayList<FlowEntry>();
+        for (FlowEntry flowEntry : this.flowEntries()) {
+            if (flowEntry.flowEntryUserState() !=
+                    FlowEntryUserState.FE_USER_DELETE) {
+                newFlowEntries.add(flowEntry);
+            }
+        }
+        setFlowEntries(newFlowEntries);
     }
 
     /**
      * Convert the data path to a string.
-     *
+     * <p/>
      * The string has the following form:
      * [src=01:01:01:01:01:01:01:01/1111 flowEntry=<entry1> flowEntry=<entry2> flowEntry=<entry3> dst=02:02:02:02:02:02:02:02/2222]
      *
@@ -145,13 +151,13 @@
      */
     @Override
     public String toString() {
-	String ret = "[src=" + this.srcPort.toString();
+        String ret = "[src=" + this.srcPort.toString();
 
-	for (FlowEntry fe : flowEntries) {
-	    ret += " flowEntry=" + fe.toString();
-	}
-	ret += " dst=" + this.dstPort.toString() + "]";
+        for (FlowEntry fe : flowEntries) {
+            ret += " flowEntry=" + fe.toString();
+        }
+        ret += " dst=" + this.dstPort.toString() + "]";
 
-	return ret;
+        return ret;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/DataPathEndpoints.java b/src/main/java/net/onrc/onos/core/util/DataPathEndpoints.java
index eeb5aaa..70edfee 100644
--- a/src/main/java/net/onrc/onos/core/util/DataPathEndpoints.java
+++ b/src/main/java/net/onrc/onos/core/util/DataPathEndpoints.java
@@ -7,8 +7,8 @@
  * The class representing the Data Path Endpoints.
  */
 public class DataPathEndpoints {
-    private SwitchPort srcPort;		// The source port
-    private SwitchPort dstPort;		// The destination port
+    private SwitchPort srcPort;        // The source port
+    private SwitchPort dstPort;        // The destination port
 
     /**
      * Default constructor.
@@ -23,8 +23,8 @@
      * @param dstPort the destination port to use.
      */
     public DataPathEndpoints(SwitchPort srcPort, SwitchPort dstPort) {
-	this.srcPort = srcPort;
-	this.dstPort = dstPort;
+        this.srcPort = srcPort;
+        this.dstPort = dstPort;
     }
 
     /**
@@ -33,7 +33,9 @@
      * @return the data path source port.
      */
     @JsonProperty("srcPort")
-    public SwitchPort srcPort() { return srcPort; }
+    public SwitchPort srcPort() {
+        return srcPort;
+    }
 
     /**
      * Set the data path source port.
@@ -42,7 +44,7 @@
      */
     @JsonProperty("srcPort")
     public void setSrcPort(SwitchPort srcPort) {
-	this.srcPort = srcPort;
+        this.srcPort = srcPort;
     }
 
     /**
@@ -51,7 +53,9 @@
      * @return the data path destination port.
      */
     @JsonProperty("dstPort")
-    public SwitchPort dstPort() { return dstPort; }
+    public SwitchPort dstPort() {
+        return dstPort;
+    }
 
     /**
      * Set the data path destination port.
@@ -60,12 +64,12 @@
      */
     @JsonProperty("dstPort")
     public void setDstPort(SwitchPort dstPort) {
-	this.dstPort = dstPort;
+        this.dstPort = dstPort;
     }
 
     /**
      * Convert the data path endpoints to a string.
-     *
+     * <p/>
      * The string has the following form:
      * [src=01:01:01:01:01:01:01:01/1111 dst=02:02:02:02:02:02:02:02/2222]
      *
@@ -73,8 +77,8 @@
      */
     @Override
     public String toString() {
-	String ret = "[src=" + this.srcPort.toString() +
-	    " dst=" + this.dstPort.toString() + "]";
-	return ret;
+        String ret = "[src=" + this.srcPort.toString() +
+                " dst=" + this.dstPort.toString() + "]";
+        return ret;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/Dpid.java b/src/main/java/net/onrc/onos/core/util/Dpid.java
index dcc3a7c..80ebc15 100644
--- a/src/main/java/net/onrc/onos/core/util/Dpid.java
+++ b/src/main/java/net/onrc/onos/core/util/Dpid.java
@@ -10,8 +10,8 @@
 /**
  * The class representing a network switch DPID.
  */
-@JsonDeserialize(using=DpidDeserializer.class)
-@JsonSerialize(using=DpidSerializer.class)
+@JsonDeserialize(using = DpidDeserializer.class)
+@JsonSerialize(using = DpidSerializer.class)
 public class Dpid {
     static public final long UNKNOWN = 0;
 
@@ -21,7 +21,7 @@
      * Default constructor.
      */
     public Dpid() {
-	this.value = Dpid.UNKNOWN;
+        this.value = Dpid.UNKNOWN;
     }
 
     /**
@@ -30,7 +30,7 @@
      * @param value the value to use.
      */
     public Dpid(long value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -39,7 +39,7 @@
      * @param value the value to use.
      */
     public Dpid(String value) {
-	this.value = HexString.toLong(value);
+        this.value = HexString.toLong(value);
     }
 
     /**
@@ -47,7 +47,9 @@
      *
      * @return the value of the DPID.
      */
-    public long value() { return value; }
+    public long value() {
+        return value;
+    }
 
     /**
      * Set the value of the DPID.
@@ -55,7 +57,7 @@
      * @param value the value to set.
      */
     public void setValue(long value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -65,24 +67,24 @@
      */
     @Override
     public String toString() {
-	return HexString.toHexString(this.value);
+        return HexString.toHexString(this.value);
     }
 
     @Override
     public boolean equals(Object other) {
-    	if (!(other instanceof Dpid)) {
-    		return false;
-    	}
+        if (!(other instanceof Dpid)) {
+            return false;
+        }
 
-    	Dpid otherDpid = (Dpid) other;
+        Dpid otherDpid = (Dpid) other;
 
-    	return value == otherDpid.value;
+        return value == otherDpid.value;
     }
 
     @Override
     public int hashCode() {
-    	int hash = 17;
-    	hash += 31 * hash + (int)(value ^ value >>> 32); 
-    	return hash;
+        int hash = 17;
+        hash += 31 * hash + (int) (value ^ value >>> 32);
+        return hash;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/EventEntry.java b/src/main/java/net/onrc/onos/core/util/EventEntry.java
index fe4c3ac..e1abcaf 100644
--- a/src/main/java/net/onrc/onos/core/util/EventEntry.java
+++ b/src/main/java/net/onrc/onos/core/util/EventEntry.java
@@ -8,12 +8,12 @@
      * The event types.
      */
     public enum Type {
-	ENTRY_ADD,			// Add or update an entry
-	ENTRY_REMOVE			// Remove an entry
+        ENTRY_ADD,            // Add or update an entry
+        ENTRY_REMOVE            // Remove an entry
     }
 
-    private Type	eventType;	// The event type
-    private T		eventData;	// The relevant event data entry
+    private Type eventType;    // The event type
+    private T eventData;    // The relevant event data entry
 
     /**
      * Constructor for a given event type and event-related data entry.
@@ -22,8 +22,8 @@
      * @param eventData the event data entry.
      */
     public EventEntry(EventEntry.Type eventType, T eventData) {
-	this.eventType = eventType;
-	this.eventData = eventData;
+        this.eventType = eventType;
+        this.eventData = eventData;
     }
 
     /**
@@ -32,7 +32,7 @@
      * @return true if the event type is ENTRY_ADD, otherwise false.
      */
     public boolean isAdd() {
-	return (this.eventType == Type.ENTRY_ADD);
+        return (this.eventType == Type.ENTRY_ADD);
     }
 
     /**
@@ -41,7 +41,7 @@
      * @return true if the event type is ENTRY_REMOVE, otherwise false.
      */
     public boolean isRemove() {
-	return (this.eventType == Type.ENTRY_REMOVE);
+        return (this.eventType == Type.ENTRY_REMOVE);
     }
 
     /**
@@ -50,7 +50,7 @@
      * @return the event type.
      */
     public EventEntry.Type eventType() {
-	return this.eventType;
+        return this.eventType;
     }
 
     /**
@@ -59,6 +59,6 @@
      * @return the event-related data entry.
      */
     public T eventData() {
-	return this.eventData;
+        return this.eventData;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntry.java b/src/main/java/net/onrc/onos/core/util/FlowEntry.java
index fb5e3a3..0204590 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntry.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntry.java
@@ -6,25 +6,25 @@
 
 /**
  * The class representing the Flow Entry.
- *
+ * <p/>
  * NOTE: The specification is incomplete. E.g., the entry needs to
  * support multiple in-ports and multiple out-ports.
  */
 public class FlowEntry {
-    private FlowId flowId;			// FlowID of the Flow Entry
-    private FlowEntryId flowEntryId;		// The Flow Entry ID
-    private int		idleTimeout;		// The Flow idle timeout
-    private int		hardTimeout;		// The Flow hard timeout
-    private int		priority;		// The Flow priority
-    private FlowEntryMatch flowEntryMatch;	// The Flow Entry Match
-    private FlowEntryActions flowEntryActions;	// The Flow Entry Actions
-    private Dpid dpid;				// The Switch DPID
-    private Port inPort;		// The Switch incoming port. Used only
-					// when the entry is used to return
-					// Shortest Path computation.
-    private Port outPort;		// The Switch outgoing port. Used only
-					// when the entry is used to return
-					// Shortest Path computation.
+    private FlowId flowId;            // FlowID of the Flow Entry
+    private FlowEntryId flowEntryId;        // The Flow Entry ID
+    private int idleTimeout;        // The Flow idle timeout
+    private int hardTimeout;        // The Flow hard timeout
+    private int priority;        // The Flow priority
+    private FlowEntryMatch flowEntryMatch;    // The Flow Entry Match
+    private FlowEntryActions flowEntryActions;    // The Flow Entry Actions
+    private Dpid dpid;                // The Switch DPID
+    private Port inPort;        // The Switch incoming port. Used only
+    // when the entry is used to return
+    // Shortest Path computation.
+    private Port outPort;        // The Switch outgoing port. Used only
+    // when the entry is used to return
+    // Shortest Path computation.
     private FlowEntryUserState flowEntryUserState; // The Flow Entry User state
     private FlowEntrySwitchState flowEntrySwitchState; // The Flow Entry Switch state
     // The Flow Entry Error state (if FlowEntrySwitchState is FE_SWITCH_FAILED)
@@ -34,88 +34,88 @@
      * Default constructor.
      */
     public FlowEntry() {
-	// TODO: Test code
-	/*
-	MACAddress mac = MACAddress.valueOf("01:02:03:04:05:06");
-	IPv4 ipv4 = new IPv4("1.2.3.4");
-	IPv4Net ipv4net = new IPv4Net("5.6.7.0/24");
+        // TODO: Test code
+    /*
+    MACAddress mac = MACAddress.valueOf("01:02:03:04:05:06");
+    IPv4 ipv4 = new IPv4("1.2.3.4");
+    IPv4Net ipv4net = new IPv4Net("5.6.7.0/24");
 
-	flowEntryMatch = new FlowEntryMatch();
-	flowEntryMatch.enableInPort(new Port((short)10));
-	flowEntryMatch.enableSrcMac(mac);
-	flowEntryMatch.enableDstMac(mac);
-	flowEntryMatch.enableVlanId((short)20);
-	flowEntryMatch.enableVlanPriority((byte)30);
-	flowEntryMatch.enableEthernetFrameType((short)40);
-	flowEntryMatch.enableIpToS((byte)50);
-	flowEntryMatch.enableIpProto((byte)60);
-	flowEntryMatch.enableSrcIPv4Net(ipv4net);
-	flowEntryMatch.enableDstIPv4Net(ipv4net);
-	flowEntryMatch.enableSrcTcpUdpPort((short)70);
-	flowEntryMatch.enableDstTcpUdpPort((short)80);
+    flowEntryMatch = new FlowEntryMatch();
+    flowEntryMatch.enableInPort(new Port((short)10));
+    flowEntryMatch.enableSrcMac(mac);
+    flowEntryMatch.enableDstMac(mac);
+    flowEntryMatch.enableVlanId((short)20);
+    flowEntryMatch.enableVlanPriority((byte)30);
+    flowEntryMatch.enableEthernetFrameType((short)40);
+    flowEntryMatch.enableIpToS((byte)50);
+    flowEntryMatch.enableIpProto((byte)60);
+    flowEntryMatch.enableSrcIPv4Net(ipv4net);
+    flowEntryMatch.enableDstIPv4Net(ipv4net);
+    flowEntryMatch.enableSrcTcpUdpPort((short)70);
+    flowEntryMatch.enableDstTcpUdpPort((short)80);
 
-	FlowEntryAction action = null;
-	FlowEntryActions actions = new FlowEntryActions();
+    FlowEntryAction action = null;
+    FlowEntryActions actions = new FlowEntryActions();
 
-	action = new FlowEntryAction();
-	action.setActionOutput(new Port((short)12));
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionOutput(new Port((short)12));
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionOutputToController((short)13);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionOutputToController((short)13);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionSetVlanId((short)14);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionSetVlanId((short)14);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionSetVlanPriority((byte)15);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionSetVlanPriority((byte)15);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionStripVlan(true);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionStripVlan(true);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionSetEthernetSrcAddr(mac);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionSetEthernetSrcAddr(mac);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionSetEthernetDstAddr(mac);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionSetEthernetDstAddr(mac);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionSetIPv4SrcAddr(ipv4);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionSetIPv4SrcAddr(ipv4);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionSetIPv4DstAddr(ipv4);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionSetIPv4DstAddr(ipv4);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionSetIpToS((byte)16);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionSetIpToS((byte)16);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionSetTcpUdpSrcPort((short)17);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionSetTcpUdpSrcPort((short)17);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionSetTcpUdpDstPort((short)18);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionSetTcpUdpDstPort((short)18);
+    actions.addAction(action);
 
-	action = new FlowEntryAction();
-	action.setActionEnqueue(new Port((short)19), 20);
-	actions.addAction(action);
+    action = new FlowEntryAction();
+    action.setActionEnqueue(new Port((short)19), 20);
+    actions.addAction(action);
 
-	setFlowEntryActions(actions);
-	*/
+    setFlowEntryActions(actions);
+    */
 
-	priority = FlowPath.PRIORITY_DEFAULT;
-	flowEntryActions = new FlowEntryActions();
-	flowEntryUserState = FlowEntryUserState.FE_USER_UNKNOWN;
-	flowEntrySwitchState = FlowEntrySwitchState.FE_SWITCH_UNKNOWN;
+        priority = FlowPath.PRIORITY_DEFAULT;
+        flowEntryActions = new FlowEntryActions();
+        flowEntryUserState = FlowEntryUserState.FE_USER_UNKNOWN;
+        flowEntrySwitchState = FlowEntrySwitchState.FE_SWITCH_UNKNOWN;
     }
 
     /**
@@ -124,7 +124,9 @@
      * @return the Flow ID.
      */
     @JsonIgnore
-    public FlowId flowId() { return flowId; }
+    public FlowId flowId() {
+        return flowId;
+    }
 
     /**
      * Set the Flow ID.
@@ -132,7 +134,7 @@
      * @param flowId the Flow ID to set.
      */
     public void setFlowId(FlowId flowId) {
-	this.flowId = flowId;
+        this.flowId = flowId;
     }
 
     /**
@@ -142,9 +144,9 @@
      */
     @JsonIgnore
     public boolean isValidFlowId() {
-	if (this.flowId == null)
-	    return false;
-	return (this.flowId.isValid());
+        if (this.flowId == null)
+            return false;
+        return (this.flowId.isValid());
     }
 
     /**
@@ -153,7 +155,9 @@
      * @return the Flow Entry ID.
      */
     @JsonProperty("flowEntryId")
-    public FlowEntryId flowEntryId() { return flowEntryId; }
+    public FlowEntryId flowEntryId() {
+        return flowEntryId;
+    }
 
     /**
      * Set the Flow Entry ID.
@@ -162,7 +166,7 @@
      */
     @JsonProperty("flowEntryId")
     public void setFlowEntryId(FlowEntryId flowEntryId) {
-	this.flowEntryId = flowEntryId;
+        this.flowEntryId = flowEntryId;
     }
 
     /**
@@ -172,25 +176,27 @@
      */
     @JsonIgnore
     public boolean isValidFlowEntryId() {
-	if (this.flowEntryId == null)
-	    return false;
-	return (this.flowEntryId.isValid());
+        if (this.flowEntryId == null)
+            return false;
+        return (this.flowEntryId.isValid());
     }
 
     /**
      * Get the flow idle timeout in seconds.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      * If zero, the timeout is not set.
      *
      * @return the flow idle timeout.
      */
     @JsonProperty("idleTimeout")
-    public int idleTimeout() { return idleTimeout; }
+    public int idleTimeout() {
+        return idleTimeout;
+    }
 
     /**
      * Set the flow idle timeout in seconds.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      * If zero, the timeout is not set.
      *
@@ -198,23 +204,25 @@
      */
     @JsonProperty("idleTimeout")
     public void setIdleTimeout(int idleTimeout) {
-	this.idleTimeout = 0xffff & idleTimeout;
+        this.idleTimeout = 0xffff & idleTimeout;
     }
 
     /**
      * Get the flow hard timeout in seconds.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      * If zero, the timeout is not set.
      *
      * @return the flow hard timeout.
      */
     @JsonProperty("hardTimeout")
-    public int hardTimeout() { return hardTimeout; }
+    public int hardTimeout() {
+        return hardTimeout;
+    }
 
     /**
      * Set the flow hard timeout in seconds.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      * If zero, the timeout is not set.
      *
@@ -222,29 +230,31 @@
      */
     @JsonProperty("hardTimeout")
     public void setHardTimeout(int hardTimeout) {
-	this.hardTimeout = 0xffff & hardTimeout;
+        this.hardTimeout = 0xffff & hardTimeout;
     }
 
     /**
      * Get the flow priority.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      *
      * @return the flow priority.
      */
     @JsonProperty("priority")
-    public int priority() { return priority; }
+    public int priority() {
+        return priority;
+    }
 
     /**
      * Set the flow priority.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      *
      * @param priority the flow priority to set.
      */
     @JsonProperty("priority")
     public void setPriority(int priority) {
-	this.priority = 0xffff & priority;
+        this.priority = 0xffff & priority;
     }
 
     /**
@@ -253,7 +263,9 @@
      * @return the Flow Entry Match.
      */
     @JsonProperty("flowEntryMatch")
-    public FlowEntryMatch flowEntryMatch() { return flowEntryMatch; }
+    public FlowEntryMatch flowEntryMatch() {
+        return flowEntryMatch;
+    }
 
     /**
      * Set the Flow Entry Match.
@@ -262,7 +274,7 @@
      */
     @JsonProperty("flowEntryMatch")
     public void setFlowEntryMatch(FlowEntryMatch flowEntryMatch) {
-	this.flowEntryMatch = flowEntryMatch;
+        this.flowEntryMatch = flowEntryMatch;
     }
 
     /**
@@ -272,7 +284,7 @@
      */
     @JsonProperty("flowEntryActions")
     public FlowEntryActions flowEntryActions() {
-	return flowEntryActions;
+        return flowEntryActions;
     }
 
     /**
@@ -282,7 +294,7 @@
      */
     @JsonProperty("flowEntryActions")
     public void setFlowEntryActions(FlowEntryActions flowEntryActions) {
-	this.flowEntryActions = flowEntryActions;
+        this.flowEntryActions = flowEntryActions;
     }
 
     /**
@@ -291,7 +303,9 @@
      * @return the Switch DPID.
      */
     @JsonProperty("dpid")
-    public Dpid dpid() { return dpid; }
+    public Dpid dpid() {
+        return dpid;
+    }
 
     /**
      * Set the Switch DPID.
@@ -300,51 +314,55 @@
      */
     @JsonProperty("dpid")
     public void setDpid(Dpid dpid) {
-	this.dpid = dpid;
+        this.dpid = dpid;
     }
 
     /**
      * Get the Switch incoming port.
-     *
+     * <p/>
      * Used only when the entry is used to return Shortest Path computation.
      *
      * @return the Switch incoming port.
      */
     @JsonProperty("inPort")
-    public Port inPort() { return inPort; }
+    public Port inPort() {
+        return inPort;
+    }
 
     /**
      * Set the Switch incoming port.
-     *
+     * <p/>
      * Used only when the entry is used to return Shortest Path computation.
      *
      * @param inPort the Switch incoming port to set.
      */
     @JsonProperty("inPort")
     public void setInPort(Port inPort) {
-	this.inPort = inPort;
+        this.inPort = inPort;
     }
 
     /**
      * Get the Switch outgoing port.
-     *
+     * <p/>
      * Used only when the entry is used to return Shortest Path computation.
      *
      * @return the Switch outgoing port.
      */
     @JsonProperty("outPort")
-    public Port outPort() { return outPort; }
+    public Port outPort() {
+        return outPort;
+    }
 
     /**
      * Set the Switch outgoing port.
-     *
+     * <p/>
      * Used only when the entry is used to return Shortest Path computation.
      *
      * @param outPort the Switch outgoing port to set.
      */
     @JsonProperty("outPort")
     public void setOutPort(Port outPort) {
-	this.outPort = outPort;
+        this.outPort = outPort;
     }
 
     /**
@@ -354,7 +372,7 @@
      */
     @JsonProperty("flowEntryUserState")
     public FlowEntryUserState flowEntryUserState() {
-	return flowEntryUserState;
+        return flowEntryUserState;
     }
 
     /**
@@ -364,12 +382,12 @@
      */
     @JsonProperty("flowEntryUserState")
     public void setFlowEntryUserState(FlowEntryUserState flowEntryUserState) {
-	this.flowEntryUserState = flowEntryUserState;
+        this.flowEntryUserState = flowEntryUserState;
     }
 
     /**
      * Get the Flow Entry Switch state.
-     *
+     * <p/>
      * The Flow Entry Error state is used if FlowEntrySwitchState is
      * FE_SWITCH_FAILED.
      *
@@ -377,12 +395,12 @@
      */
     @JsonProperty("flowEntrySwitchState")
     public FlowEntrySwitchState flowEntrySwitchState() {
-	return flowEntrySwitchState;
+        return flowEntrySwitchState;
     }
 
     /**
      * Set the Flow Entry Switch state.
-     *
+     * <p/>
      * The Flow Entry Error state is used if FlowEntrySwitchState is
      * FE_SWITCH_FAILED.
      *
@@ -390,7 +408,7 @@
      */
     @JsonProperty("flowEntrySwitchState")
     public void setFlowEntrySwitchState(FlowEntrySwitchState flowEntrySwitchState) {
-	this.flowEntrySwitchState = flowEntrySwitchState;
+        this.flowEntrySwitchState = flowEntrySwitchState;
     }
 
     /**
@@ -400,7 +418,7 @@
      */
     @JsonProperty("flowEntryErrorState")
     public FlowEntryErrorState flowEntryErrorState() {
-	return flowEntryErrorState;
+        return flowEntryErrorState;
     }
 
     /**
@@ -410,53 +428,54 @@
      */
     @JsonProperty("flowEntryErrorState")
     public void setFlowEntryErrorState(FlowEntryErrorState flowEntryErrorState) {
-	this.flowEntryErrorState = flowEntryErrorState;
+        this.flowEntryErrorState = flowEntryErrorState;
     }
 
     /**
      * Convert the flow entry to a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  [flowEntryId=XXX idleTimeout=XXX hardTimeout=XXX priority=XXX
-     *   flowEntryMatch=XXX flowEntryActions=XXX dpid=XXX
-     *   inPort=XXX outPort=XXX flowEntryUserState=XXX flowEntrySwitchState=XXX
-     *   flowEntryErrorState=XXX]
+     * [flowEntryId=XXX idleTimeout=XXX hardTimeout=XXX priority=XXX
+     * flowEntryMatch=XXX flowEntryActions=XXX dpid=XXX
+     * inPort=XXX outPort=XXX flowEntryUserState=XXX flowEntrySwitchState=XXX
+     * flowEntryErrorState=XXX]
+     *
      * @return the flow entry as a string.
      */
     @Override
     public String toString() {
-	StringBuilder ret = new StringBuilder();
-	if ( flowEntryId != null ) {
-		ret.append("[flowEntryId=" + this.flowEntryId.toString());
-	} else {
-		ret.append("[");
-	}
-	if ( flowId != null ) {
-		ret.append(" flowId=" + this.flowId.toString());
-	}
-	ret.append(" idleTimeout=" + this.idleTimeout);
-	ret.append(" hardTimeout=" + this.hardTimeout);
-	ret.append(" priority=" + this.priority);
-	if ( flowEntryMatch != null ) {
-		ret.append(" flowEntryMatch=" + this.flowEntryMatch.toString());
-	}
-	ret.append(" flowEntryActions=" + this.flowEntryActions.toString() );
-	if ( dpid != null ) {
-		ret.append(" dpid=" + this.dpid.toString());
-	}
-	if ( inPort != null ) {
-		ret.append(" inPort=" + this.inPort.toString());
-	}
-	if ( outPort != null ) {
-		ret.append(" outPort=" + this.outPort.toString());
-	}
-	ret.append(" flowEntryUserState=" + this.flowEntryUserState);
-	ret.append(" flowEntrySwitchState=" + this.flowEntrySwitchState);
-	if ( flowEntryErrorState != null ) {
-		ret.append(" flowEntryErrorState=" + this.flowEntryErrorState.toString());
-	}
-	ret.append("]");
+        StringBuilder ret = new StringBuilder();
+        if (flowEntryId != null) {
+            ret.append("[flowEntryId=" + this.flowEntryId.toString());
+        } else {
+            ret.append("[");
+        }
+        if (flowId != null) {
+            ret.append(" flowId=" + this.flowId.toString());
+        }
+        ret.append(" idleTimeout=" + this.idleTimeout);
+        ret.append(" hardTimeout=" + this.hardTimeout);
+        ret.append(" priority=" + this.priority);
+        if (flowEntryMatch != null) {
+            ret.append(" flowEntryMatch=" + this.flowEntryMatch.toString());
+        }
+        ret.append(" flowEntryActions=" + this.flowEntryActions.toString());
+        if (dpid != null) {
+            ret.append(" dpid=" + this.dpid.toString());
+        }
+        if (inPort != null) {
+            ret.append(" inPort=" + this.inPort.toString());
+        }
+        if (outPort != null) {
+            ret.append(" outPort=" + this.outPort.toString());
+        }
+        ret.append(" flowEntryUserState=" + this.flowEntryUserState);
+        ret.append(" flowEntrySwitchState=" + this.flowEntrySwitchState);
+        if (flowEntryErrorState != null) {
+            ret.append(" flowEntryErrorState=" + this.flowEntryErrorState.toString());
+        }
+        ret.append("]");
 
-	return ret.toString();
+        return ret.toString();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntryAction.java b/src/main/java/net/onrc/onos/core/util/FlowEntryAction.java
index da86ed3..f619fea 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryAction.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryAction.java
@@ -6,7 +6,7 @@
 
 /**
  * The class representing a single Flow Entry action.
- *
+ * <p/>
  * A Flow Entry action that needs to be applied to each packet.
  * Note that it contains only a single action. Multiple actions are
  * listed in a list inside @ref FlowEntryActions.
@@ -14,482 +14,484 @@
 public class FlowEntryAction {
     /**
      * Special action values.
-     *
+     * <p/>
      * Those values are taken as-is from the OpenFlow-v1.0.0 specification
      * (pp 21-22).
      */
     public enum ActionValues {
-	ACTION_OUTPUT		((short)0x0),	// Output to switch port
-	ACTION_SET_VLAN_VID	((short)0x1),	// Set the 802.1q VLAN id
-	ACTION_SET_VLAN_PCP	((short)0x2),	// Set the 802.1q priority
-	ACTION_STRIP_VLAN	((short)0x3),	// Strip the 802.1q header
-	ACTION_SET_DL_SRC	((short)0x4),	// Ethernet source address
-	ACTION_SET_DL_DST	((short)0x5),	// Ethernet destination address
-	ACTION_SET_NW_SRC	((short)0x6),	// IP source address
-	ACTION_SET_NW_DST	((short)0x7),	// IP destination address
-	ACTION_SET_NW_TOS	((short)0x8),	// IP ToS (DSCP field, 6 bits)
-	ACTION_SET_TP_SRC	((short)0x9),	// TCP/UDP source port
-	ACTION_SET_TP_DST	((short)0xa),	// TCP/UDP destination port
-	ACTION_ENQUEUE		((short)0xb),	// Output to queue on port
-	ACTION_VENDOR		((short)0xffff); // Vendor-specific
+        ACTION_OUTPUT((short) 0x0),    // Output to switch port
+        ACTION_SET_VLAN_VID((short) 0x1),    // Set the 802.1q VLAN id
+        ACTION_SET_VLAN_PCP((short) 0x2),    // Set the 802.1q priority
+        ACTION_STRIP_VLAN((short) 0x3),    // Strip the 802.1q header
+        ACTION_SET_DL_SRC((short) 0x4),    // Ethernet source address
+        ACTION_SET_DL_DST((short) 0x5),    // Ethernet destination address
+        ACTION_SET_NW_SRC((short) 0x6),    // IP source address
+        ACTION_SET_NW_DST((short) 0x7),    // IP destination address
+        ACTION_SET_NW_TOS((short) 0x8),    // IP ToS (DSCP field, 6 bits)
+        ACTION_SET_TP_SRC((short) 0x9),    // TCP/UDP source port
+        ACTION_SET_TP_DST((short) 0xa),    // TCP/UDP destination port
+        ACTION_ENQUEUE((short) 0xb),    // Output to queue on port
+        ACTION_VENDOR((short) 0xffff); // Vendor-specific
 
-	private final short value;	// The value
+        private final short value;    // The value
 
-	/**
-	 * Constructor for a given value.
-	 *
-	 * @param value the value to use for the initialization.
-	 */
-	private ActionValues(short value) {
-	    this.value = value;
-	}
+        /**
+         * Constructor for a given value.
+         *
+         * @param value the value to use for the initialization.
+         */
+        private ActionValues(short value) {
+            this.value = value;
+        }
 
-	/**
-	 * Get the value.
-	 *
-	 * @return the value.
-	 */
-	public short getValue() { return value; }
+        /**
+         * Get the value.
+         *
+         * @return the value.
+         */
+        public short getValue() {
+            return value;
+        }
     }
 
     /**
      * Action structure for ACTION_OUTPUT: Output to switch port.
      */
     public static class ActionOutput {
-	private Port port;	// Output port
-	private short maxLen;	// Max. length (in bytes) to send to controller
-				// if the port is set to PORT_CONTROLLER
+        private Port port;    // Output port
+        private short maxLen;    // Max. length (in bytes) to send to controller
+        // if the port is set to PORT_CONTROLLER
 
-	/**
-	 * Default constructor.
-	 */
-	public ActionOutput() {
-	    this.port = null;
-	    this.maxLen = 0;
-	}
+        /**
+         * Default constructor.
+         */
+        public ActionOutput() {
+            this.port = null;
+            this.maxLen = 0;
+        }
 
-	/**
-	 * Copy constructor.
-	 *
-	 * @param other the object to copy from.
-	 */
-	public ActionOutput(ActionOutput other) {
-	    if (other.port != null)
-		this.port = new Port(other.port);
-	    this.maxLen = other.maxLen;
-	}
+        /**
+         * Copy constructor.
+         *
+         * @param other the object to copy from.
+         */
+        public ActionOutput(ActionOutput other) {
+            if (other.port != null)
+                this.port = new Port(other.port);
+            this.maxLen = other.maxLen;
+        }
 
-	/**
-	 * Constructor from a string.
-	 *
-	 * The string has the following form:
-	 *  [port=XXX maxLen=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public ActionOutput(String actionStr) {
-	    this.fromString(actionStr);
-	}
+        /**
+         * Constructor from a string.
+         * <p/>
+         * The string has the following form:
+         * [port=XXX maxLen=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public ActionOutput(String actionStr) {
+            this.fromString(actionStr);
+        }
 
-	/**
-	 * Constructor for a given output port and maximum length.
-	 *
-	 * @param port the output port to set.
-	 * @param maxLen the maximum length (in bytes) to send to controller
-	 * if the port is set to PORT_CONTROLLER.
-	 */
-	public ActionOutput(Port port, short maxLen) {
-	    this.port = port;
-	    this.maxLen = maxLen;
-	}
+        /**
+         * Constructor for a given output port and maximum length.
+         *
+         * @param port   the output port to set.
+         * @param maxLen the maximum length (in bytes) to send to controller
+         *               if the port is set to PORT_CONTROLLER.
+         */
+        public ActionOutput(Port port, short maxLen) {
+            this.port = port;
+            this.maxLen = maxLen;
+        }
 
-	/**
-	 * Constructor for a given output port.
-	 *
-	 * @param port the output port to set.
-	 */
-	public ActionOutput(Port port) {
-	    this.port = port;
-	    this.maxLen = 0;
-	}
+        /**
+         * Constructor for a given output port.
+         *
+         * @param port the output port to set.
+         */
+        public ActionOutput(Port port) {
+            this.port = port;
+            this.maxLen = 0;
+        }
 
-	/**
-	 * Get the output port.
-	 *
-	 * @return the output port.
-	 */
-	@JsonProperty("port")
-	public Port port() {
-	    return this.port;
-	}
+        /**
+         * Get the output port.
+         *
+         * @return the output port.
+         */
+        @JsonProperty("port")
+        public Port port() {
+            return this.port;
+        }
 
-	/**
-	 * Get the maximum length (in bytes) to send to controller if the
-	 * port is set to PORT_CONTROLLER.
-	 *
-	 * @return the maximum length (in bytes) to send to controller if the
-	 * port is set to PORT_CONTROLLER.
-	 */
-	@JsonProperty("maxLen")
-	public short maxLen() {
-	    return this.maxLen;
-	}
+        /**
+         * Get the maximum length (in bytes) to send to controller if the
+         * port is set to PORT_CONTROLLER.
+         *
+         * @return the maximum length (in bytes) to send to controller if the
+         * port is set to PORT_CONTROLLER.
+         */
+        @JsonProperty("maxLen")
+        public short maxLen() {
+            return this.maxLen;
+        }
 
-	/**
-	 * Convert the action to a string.
-	 *
-	 * The string has the following form:
-	 *  [port=XXX maxLen=XXX]
-	 *
-	 * @return the action as a string.
-	 */
-	@Override
-	public String toString() {
-	    String ret = "[";
-	    ret += "port=" + port.toString();
-	    ret += " maxLen=" + maxLen;
-	    ret += "]";
+        /**
+         * Convert the action to a string.
+         * <p/>
+         * The string has the following form:
+         * [port=XXX maxLen=XXX]
+         *
+         * @return the action as a string.
+         */
+        @Override
+        public String toString() {
+            String ret = "[";
+            ret += "port=" + port.toString();
+            ret += " maxLen=" + maxLen;
+            ret += "]";
 
-	    return ret;
-	}
+            return ret;
+        }
 
-	/**
-	 * Convert a string to an action.
-	 *
-	 * The string has the following form:
-	 *  [port=XXX maxLen=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public void fromString(String actionStr) {
-	    String[] parts = actionStr.split(" ");
-	    String decode = null;
+        /**
+         * Convert a string to an action.
+         * <p/>
+         * The string has the following form:
+         * [port=XXX maxLen=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public void fromString(String actionStr) {
+            String[] parts = actionStr.split(" ");
+            String decode = null;
 
-	    // Decode the "port=XXX" part
-	    if (parts.length > 0)
-		decode = parts[0];
-	    if (decode != null) {
-		String[] tokens = decode.split("port=");
-		if (tokens.length > 1 && tokens[1] != null) {
-		    try {
-			Short valueShort = Short.valueOf(tokens[1]);
-			port = new Port(valueShort);
-		    } catch (NumberFormatException e) {
-			throw new IllegalArgumentException("Invalid action string");
-		    }
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
+            // Decode the "port=XXX" part
+            if (parts.length > 0)
+                decode = parts[0];
+            if (decode != null) {
+                String[] tokens = decode.split("port=");
+                if (tokens.length > 1 && tokens[1] != null) {
+                    try {
+                        Short valueShort = Short.valueOf(tokens[1]);
+                        port = new Port(valueShort);
+                    } catch (NumberFormatException e) {
+                        throw new IllegalArgumentException("Invalid action string");
+                    }
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
 
-	    // Decode the "maxLen=XXX" part
-	    decode = null;
-	    if (parts.length > 1)
-		decode = parts[1];
-	    if (decode != null) {
-		decode = decode.replace("]", "");
-		String[] tokens = decode.split("maxLen=");
-		if (tokens.length > 1 && tokens[1] != null) {
-		    try {
-			maxLen = Short.valueOf(tokens[1]);
-		    } catch (NumberFormatException e) {
-			throw new IllegalArgumentException("Invalid action string");
-		    }
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	}
+            // Decode the "maxLen=XXX" part
+            decode = null;
+            if (parts.length > 1)
+                decode = parts[1];
+            if (decode != null) {
+                decode = decode.replace("]", "");
+                String[] tokens = decode.split("maxLen=");
+                if (tokens.length > 1 && tokens[1] != null) {
+                    try {
+                        maxLen = Short.valueOf(tokens[1]);
+                    } catch (NumberFormatException e) {
+                        throw new IllegalArgumentException("Invalid action string");
+                    }
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        }
     }
 
     /**
      * Action structure for ACTION_SET_VLAN_VID: Set the 802.1q VLAN id
      */
     public static class ActionSetVlanId {
-	private short vlanId;		// The VLAN ID to set
+        private short vlanId;        // The VLAN ID to set
 
-	/**
-	 * Default constructor.
-	 */
-	public ActionSetVlanId() {
-	    this.vlanId = 0;
-	}
+        /**
+         * Default constructor.
+         */
+        public ActionSetVlanId() {
+            this.vlanId = 0;
+        }
 
-	/**
-	 * Copy constructor.
-	 *
-	 * @param other the object to copy from.
-	 */
-	public ActionSetVlanId(ActionSetVlanId other) {
-	    this.vlanId = other.vlanId;
-	}
+        /**
+         * Copy constructor.
+         *
+         * @param other the object to copy from.
+         */
+        public ActionSetVlanId(ActionSetVlanId other) {
+            this.vlanId = other.vlanId;
+        }
 
-	/**
-	 * Constructor from a string.
-	 *
-	 * The string has the following form:
-	 *  [vlanId=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public ActionSetVlanId(String actionStr) {
-	    this.fromString(actionStr);
-	}
+        /**
+         * Constructor from a string.
+         * <p/>
+         * The string has the following form:
+         * [vlanId=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public ActionSetVlanId(String actionStr) {
+            this.fromString(actionStr);
+        }
 
-	/**
-	 * Constructor for a given VLAN ID.
-	 *
-	 * @param vlanId the VLAN ID to set.
-	 */
-	public ActionSetVlanId(short vlanId) {
-	    this.vlanId = vlanId;
-	}
+        /**
+         * Constructor for a given VLAN ID.
+         *
+         * @param vlanId the VLAN ID to set.
+         */
+        public ActionSetVlanId(short vlanId) {
+            this.vlanId = vlanId;
+        }
 
-	/**
-	 * Get the VLAN ID.
-	 *
-	 * @return the VLAN ID.
-	 */
-	@JsonProperty("vlanId")
-	public short vlanId() {
-	    return this.vlanId;
-	}
+        /**
+         * Get the VLAN ID.
+         *
+         * @return the VLAN ID.
+         */
+        @JsonProperty("vlanId")
+        public short vlanId() {
+            return this.vlanId;
+        }
 
-	/**
-	 * Convert the action to a string.
-	 *
-	 * The string has the following form:
-	 *  [vlanId=XXX]
-	 *
-	 * @return the action as a string.
-	 */
-	@Override
-	public String toString() {
-	    String ret = "[";
-	    ret += "vlanId=" + this.vlanId;
-	    ret += "]";
+        /**
+         * Convert the action to a string.
+         * <p/>
+         * The string has the following form:
+         * [vlanId=XXX]
+         *
+         * @return the action as a string.
+         */
+        @Override
+        public String toString() {
+            String ret = "[";
+            ret += "vlanId=" + this.vlanId;
+            ret += "]";
 
-	    return ret;
-	}
+            return ret;
+        }
 
-	/**
-	 * Convert a string to an action.
-	 *
-	 * The string has the following form:
-	 *  [vlanId=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public void fromString(String actionStr) {
-	    String[] parts = actionStr.split("vlanId=");
-	    String decode = null;
+        /**
+         * Convert a string to an action.
+         * <p/>
+         * The string has the following form:
+         * [vlanId=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public void fromString(String actionStr) {
+            String[] parts = actionStr.split("vlanId=");
+            String decode = null;
 
-	    // Decode the value
-	    if (parts.length > 1)
-		decode = parts[1];
-	    if (decode != null) {
-		decode = decode.replace("]", "");
-		try {
-		    vlanId = Short.valueOf(decode);
-		} catch (NumberFormatException e) {
-		    throw new IllegalArgumentException("Invalid action string");
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	}
+            // Decode the value
+            if (parts.length > 1)
+                decode = parts[1];
+            if (decode != null) {
+                decode = decode.replace("]", "");
+                try {
+                    vlanId = Short.valueOf(decode);
+                } catch (NumberFormatException e) {
+                    throw new IllegalArgumentException("Invalid action string");
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        }
     }
 
     /**
      * Action structure for ACTION_SET_VLAN_PCP: Set the 802.1q priority
      */
     public static class ActionSetVlanPriority {
-	private byte vlanPriority;	// The VLAN priority to set
+        private byte vlanPriority;    // The VLAN priority to set
 
-	/**
-	 * Default constructor.
-	 */
-	public ActionSetVlanPriority() {
-	    this.vlanPriority = 0;
-	}
+        /**
+         * Default constructor.
+         */
+        public ActionSetVlanPriority() {
+            this.vlanPriority = 0;
+        }
 
-	/**
-	 * Copy constructor.
-	 *
-	 * @param other the object to copy from.
-	 */
-	public ActionSetVlanPriority(ActionSetVlanPriority other) {
-	    this.vlanPriority = other.vlanPriority;
-	}
+        /**
+         * Copy constructor.
+         *
+         * @param other the object to copy from.
+         */
+        public ActionSetVlanPriority(ActionSetVlanPriority other) {
+            this.vlanPriority = other.vlanPriority;
+        }
 
-	/**
-	 * Constructor from a string.
-	 *
-	 * The string has the following form:
-	 *  [vlanPriority=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public ActionSetVlanPriority(String actionStr) {
-	    this.fromString(actionStr);
-	}
+        /**
+         * Constructor from a string.
+         * <p/>
+         * The string has the following form:
+         * [vlanPriority=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public ActionSetVlanPriority(String actionStr) {
+            this.fromString(actionStr);
+        }
 
-	/**
-	 * Constructor for a given VLAN priority.
-	 *
-	 * @param vlanPriority the VLAN priority to set.
-	 */
-	public ActionSetVlanPriority(byte vlanPriority) {
-	    this.vlanPriority = vlanPriority;
-	}
+        /**
+         * Constructor for a given VLAN priority.
+         *
+         * @param vlanPriority the VLAN priority to set.
+         */
+        public ActionSetVlanPriority(byte vlanPriority) {
+            this.vlanPriority = vlanPriority;
+        }
 
-	/**
-	 * Get the VLAN priority.
-	 *
-	 * @return the VLAN priority.
-	 */
-	@JsonProperty("vlanPriority")
-	public byte vlanPriority() {
-	    return this.vlanPriority;
-	}
+        /**
+         * Get the VLAN priority.
+         *
+         * @return the VLAN priority.
+         */
+        @JsonProperty("vlanPriority")
+        public byte vlanPriority() {
+            return this.vlanPriority;
+        }
 
-	/**
-	 * Convert the action to a string.
-	 *
-	 * The string has the following form:
-	 *  [vlanPriority=XXX]
-	 *
-	 * @return the action as a string.
-	 */
-	@Override
-	public String toString() {
-	    String ret = "[";
-	    ret += "vlanPriority=" + this.vlanPriority;
-	    ret += "]";
+        /**
+         * Convert the action to a string.
+         * <p/>
+         * The string has the following form:
+         * [vlanPriority=XXX]
+         *
+         * @return the action as a string.
+         */
+        @Override
+        public String toString() {
+            String ret = "[";
+            ret += "vlanPriority=" + this.vlanPriority;
+            ret += "]";
 
-	    return ret;
-	}
+            return ret;
+        }
 
-	/**
-	 * Convert a string to an action.
-	 *
-	 * The string has the following form:
-	 *  [vlanPriority=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public void fromString(String actionStr) {
-	    String[] parts = actionStr.split("vlanPriority=");
-	    String decode = null;
+        /**
+         * Convert a string to an action.
+         * <p/>
+         * The string has the following form:
+         * [vlanPriority=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public void fromString(String actionStr) {
+            String[] parts = actionStr.split("vlanPriority=");
+            String decode = null;
 
-	    // Decode the value
-	    if (parts.length > 1)
-		decode = parts[1];
-	    if (decode != null) {
-		decode = decode.replace("]", "");
-		try {
-		    vlanPriority = Byte.valueOf(decode);
-		} catch (NumberFormatException e) {
-		    throw new IllegalArgumentException("Invalid action string");
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	}
+            // Decode the value
+            if (parts.length > 1)
+                decode = parts[1];
+            if (decode != null) {
+                decode = decode.replace("]", "");
+                try {
+                    vlanPriority = Byte.valueOf(decode);
+                } catch (NumberFormatException e) {
+                    throw new IllegalArgumentException("Invalid action string");
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        }
     }
 
     /**
      * Action structure for ACTION_STRIP_VLAN: Strip the 802.1q header
      */
     public static class ActionStripVlan {
-	private boolean stripVlan;	// If true, strip the VLAN header
+        private boolean stripVlan;    // If true, strip the VLAN header
 
-	/**
-	 * Default constructor.
-	 */
-	public ActionStripVlan() {
-	    this.stripVlan = false;
-	}
+        /**
+         * Default constructor.
+         */
+        public ActionStripVlan() {
+            this.stripVlan = false;
+        }
 
-	/**
-	 * Copy constructor.
-	 *
-	 * @param other the object to copy from.
-	 */
-	public ActionStripVlan(ActionStripVlan other) {
-	    this.stripVlan = other.stripVlan;
-	}
+        /**
+         * Copy constructor.
+         *
+         * @param other the object to copy from.
+         */
+        public ActionStripVlan(ActionStripVlan other) {
+            this.stripVlan = other.stripVlan;
+        }
 
-	/**
-	 * Constructor from a string.
-	 *
-	 * The string has the following form:
-	 *  [stripVlan=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public ActionStripVlan(String actionStr) {
-	    this.fromString(actionStr);
-	}
+        /**
+         * Constructor from a string.
+         * <p/>
+         * The string has the following form:
+         * [stripVlan=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public ActionStripVlan(String actionStr) {
+            this.fromString(actionStr);
+        }
 
-	/**
-	 * Constructor for a given boolean flag.
-	 *
-	 * @param stripVlan if true, strip the VLAN header.
-	 */
-	public ActionStripVlan(boolean stripVlan) {
-	    this.stripVlan = stripVlan;
-	}
+        /**
+         * Constructor for a given boolean flag.
+         *
+         * @param stripVlan if true, strip the VLAN header.
+         */
+        public ActionStripVlan(boolean stripVlan) {
+            this.stripVlan = stripVlan;
+        }
 
-	/**
-	 * Get the boolean flag whether the VLAN header should be stripped.
-	 *
-	 * @return the boolean flag whether the VLAN header should be stripped.
-	 */
-	@JsonProperty("stripVlan")
-	public boolean stripVlan() {
-	    return this.stripVlan;
-	}
+        /**
+         * Get the boolean flag whether the VLAN header should be stripped.
+         *
+         * @return the boolean flag whether the VLAN header should be stripped.
+         */
+        @JsonProperty("stripVlan")
+        public boolean stripVlan() {
+            return this.stripVlan;
+        }
 
-	/**
-	 * Convert the action to a string.
-	 *
-	 * The string has the following form:
-	 *  [stripVlan=XXX]
-	 *
-	 * @return the action as a string.
-	 */
-	@Override
-	public String toString() {
-	    String ret = "[";
-	    ret += "stripVlan=" + this.stripVlan;
-	    ret += "]";
+        /**
+         * Convert the action to a string.
+         * <p/>
+         * The string has the following form:
+         * [stripVlan=XXX]
+         *
+         * @return the action as a string.
+         */
+        @Override
+        public String toString() {
+            String ret = "[";
+            ret += "stripVlan=" + this.stripVlan;
+            ret += "]";
 
-	    return ret;
-	}
+            return ret;
+        }
 
-	/**
-	 * Convert a string to an action.
-	 *
-	 * The string has the following form:
-	 *  [stripVlan=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public void fromString(String actionStr) {
-	    String[] parts = actionStr.split("stripVlan=");
-	    String decode = null;
+        /**
+         * Convert a string to an action.
+         * <p/>
+         * The string has the following form:
+         * [stripVlan=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public void fromString(String actionStr) {
+            String[] parts = actionStr.split("stripVlan=");
+            String decode = null;
 
-	    // Decode the value
-	    if (parts.length > 1)
-		decode = parts[1];
-	    if (decode != null) {
-		decode = decode.replace("]", "");
-		stripVlan = Boolean.valueOf(decode);
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	}
+            // Decode the value
+            if (parts.length > 1)
+                decode = parts[1];
+            if (decode != null) {
+                decode = decode.replace("]", "");
+                stripVlan = Boolean.valueOf(decode);
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        }
     }
 
     /**
@@ -497,99 +499,99 @@
      * Set the Ethernet source/destination address.
      */
     public static class ActionSetEthernetAddr {
-	private MACAddress addr;	// The MAC address to set
+        private MACAddress addr;    // The MAC address to set
 
-	/**
-	 * Default constructor.
-	 */
-	public ActionSetEthernetAddr() {
-	    this.addr = null;
-	}
+        /**
+         * Default constructor.
+         */
+        public ActionSetEthernetAddr() {
+            this.addr = null;
+        }
 
-	/**
-	 * Copy constructor.
-	 *
-	 * @param other the object to copy from.
-	 */
-	public ActionSetEthernetAddr(ActionSetEthernetAddr other) {
-	    if (other.addr != null)
-		this.addr = MACAddress.valueOf(other.addr.toLong());
-	}
+        /**
+         * Copy constructor.
+         *
+         * @param other the object to copy from.
+         */
+        public ActionSetEthernetAddr(ActionSetEthernetAddr other) {
+            if (other.addr != null)
+                this.addr = MACAddress.valueOf(other.addr.toLong());
+        }
 
-	/**
-	 * Constructor from a string.
-	 *
-	 * The string has the following form:
-	 *  [addr=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public ActionSetEthernetAddr(String actionStr) {
-	    this.fromString(actionStr);
-	}
+        /**
+         * Constructor from a string.
+         * <p/>
+         * The string has the following form:
+         * [addr=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public ActionSetEthernetAddr(String actionStr) {
+            this.fromString(actionStr);
+        }
 
-	/**
-	 * Constructor for a given MAC address.
-	 *
-	 * @param addr the MAC address to set.
-	 */
-	public ActionSetEthernetAddr(MACAddress addr) {
-	    this.addr = addr;
-	}
+        /**
+         * Constructor for a given MAC address.
+         *
+         * @param addr the MAC address to set.
+         */
+        public ActionSetEthernetAddr(MACAddress addr) {
+            this.addr = addr;
+        }
 
-	/**
-	 * Get the MAC address.
-	 *
-	 * @return the MAC address.
-	 */
-	@JsonProperty("addr")
-	public MACAddress addr() {
-	    return this.addr;
-	}
+        /**
+         * Get the MAC address.
+         *
+         * @return the MAC address.
+         */
+        @JsonProperty("addr")
+        public MACAddress addr() {
+            return this.addr;
+        }
 
-	/**
-	 * Convert the action to a string.
-	 *
-	 * The string has the following form:
-	 *  [addr=XXX]
-	 *
-	 * @return the action as a string.
-	 */
-	@Override
-	public String toString() {
-	    String ret = "[";
-	    ret += "addr=" + addr.toString();
-	    ret += "]";
+        /**
+         * Convert the action to a string.
+         * <p/>
+         * The string has the following form:
+         * [addr=XXX]
+         *
+         * @return the action as a string.
+         */
+        @Override
+        public String toString() {
+            String ret = "[";
+            ret += "addr=" + addr.toString();
+            ret += "]";
 
-	    return ret;
-	}
+            return ret;
+        }
 
-	/**
-	 * Convert a string to an action.
-	 *
-	 * The string has the following form:
-	 *  [addr=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public void fromString(String actionStr) {
-	    String[] parts = actionStr.split("addr=");
-	    String decode = null;
+        /**
+         * Convert a string to an action.
+         * <p/>
+         * The string has the following form:
+         * [addr=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public void fromString(String actionStr) {
+            String[] parts = actionStr.split("addr=");
+            String decode = null;
 
-	    // Decode the value
-	    if (parts.length > 1)
-		decode = parts[1];
-	    if (decode != null) {
-		decode = decode.replace("]", "");
-		try {
-		    addr = MACAddress.valueOf(decode);
-		} catch (IllegalArgumentException e) {
-		    throw new IllegalArgumentException("Invalid action string");
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	}
+            // Decode the value
+            if (parts.length > 1)
+                decode = parts[1];
+            if (decode != null) {
+                decode = decode.replace("]", "");
+                try {
+                    addr = MACAddress.valueOf(decode);
+                } catch (IllegalArgumentException e) {
+                    throw new IllegalArgumentException("Invalid action string");
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        }
     }
 
     /**
@@ -597,99 +599,99 @@
      * Set the IPv4 source/destination address.
      */
     public static class ActionSetIPv4Addr {
-	private IPv4 addr;		// The IPv4 address to set
+        private IPv4 addr;        // The IPv4 address to set
 
-	/**
-	 * Default constructor.
-	 */
-	public ActionSetIPv4Addr() {
-	    this.addr = null;
-	}
+        /**
+         * Default constructor.
+         */
+        public ActionSetIPv4Addr() {
+            this.addr = null;
+        }
 
-	/**
-	 * Copy constructor.
-	 *
-	 * @param other the object to copy from.
-	 */
-	public ActionSetIPv4Addr(ActionSetIPv4Addr other) {
-	    if (other.addr != null)
-		this.addr = new IPv4(other.addr);
-	}
+        /**
+         * Copy constructor.
+         *
+         * @param other the object to copy from.
+         */
+        public ActionSetIPv4Addr(ActionSetIPv4Addr other) {
+            if (other.addr != null)
+                this.addr = new IPv4(other.addr);
+        }
 
-	/**
-	 * Constructor from a string.
-	 *
-	 * The string has the following form:
-	 *  [addr=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public ActionSetIPv4Addr(String actionStr) {
-	    this.fromString(actionStr);
-	}
+        /**
+         * Constructor from a string.
+         * <p/>
+         * The string has the following form:
+         * [addr=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public ActionSetIPv4Addr(String actionStr) {
+            this.fromString(actionStr);
+        }
 
-	/**
-	 * Constructor for a given IPv4 address.
-	 *
-	 * @param addr the IPv4 address to set.
-	 */
-	public ActionSetIPv4Addr(IPv4 addr) {
-	    this.addr = addr;
-	}
+        /**
+         * Constructor for a given IPv4 address.
+         *
+         * @param addr the IPv4 address to set.
+         */
+        public ActionSetIPv4Addr(IPv4 addr) {
+            this.addr = addr;
+        }
 
-	/**
-	 * Get the IPv4 address.
-	 *
-	 * @return the IPv4 address.
-	 */
-	@JsonProperty("addr")
-	public IPv4 addr() {
-	    return this.addr;
-	}
+        /**
+         * Get the IPv4 address.
+         *
+         * @return the IPv4 address.
+         */
+        @JsonProperty("addr")
+        public IPv4 addr() {
+            return this.addr;
+        }
 
-	/**
-	 * Convert the action to a string.
-	 *
-	 * The string has the following form:
-	 *  [addr=XXX]
-	 *
-	 * @return the action as a string.
-	 */
-	@Override
-	public String toString() {
-	    String ret = "[";
-	    ret += "addr=" + addr.toString();
-	    ret += "]";
+        /**
+         * Convert the action to a string.
+         * <p/>
+         * The string has the following form:
+         * [addr=XXX]
+         *
+         * @return the action as a string.
+         */
+        @Override
+        public String toString() {
+            String ret = "[";
+            ret += "addr=" + addr.toString();
+            ret += "]";
 
-	    return ret;
-	}
+            return ret;
+        }
 
-	/**
-	 * Convert a string to an action.
-	 *
-	 * The string has the following form:
-	 *  [addr=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public void fromString(String actionStr) {
-	    String[] parts = actionStr.split("addr=");
-	    String decode = null;
+        /**
+         * Convert a string to an action.
+         * <p/>
+         * The string has the following form:
+         * [addr=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public void fromString(String actionStr) {
+            String[] parts = actionStr.split("addr=");
+            String decode = null;
 
-	    // Decode the value
-	    if (parts.length > 1)
-		decode = parts[1];
-	    if (decode != null) {
-		decode = decode.replace("]", "");
-		try {
-		    addr = new IPv4(decode);
-		} catch (IllegalArgumentException e) {
-		    throw new IllegalArgumentException("Invalid action string");
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	}
+            // Decode the value
+            if (parts.length > 1)
+                decode = parts[1];
+            if (decode != null) {
+                decode = decode.replace("]", "");
+                try {
+                    addr = new IPv4(decode);
+                } catch (IllegalArgumentException e) {
+                    throw new IllegalArgumentException("Invalid action string");
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        }
     }
 
     /**
@@ -697,98 +699,98 @@
      * Set the IP ToS (DSCP field, 6 bits).
      */
     public static class ActionSetIpToS {
-	private byte ipToS;	// The IP ToS to set DSCP field, 6 bits)
+        private byte ipToS;    // The IP ToS to set DSCP field, 6 bits)
 
-	/**
-	 * Default constructor.
-	 */
-	public ActionSetIpToS() {
-	    this.ipToS = 0;
-	}
+        /**
+         * Default constructor.
+         */
+        public ActionSetIpToS() {
+            this.ipToS = 0;
+        }
 
-	/**
-	 * Copy constructor.
-	 *
-	 * @param other the object to copy from.
-	 */
-	public ActionSetIpToS(ActionSetIpToS other) {
-	    this.ipToS = other.ipToS;
-	}
+        /**
+         * Copy constructor.
+         *
+         * @param other the object to copy from.
+         */
+        public ActionSetIpToS(ActionSetIpToS other) {
+            this.ipToS = other.ipToS;
+        }
 
-	/**
-	 * Constructor from a string.
-	 *
-	 * The string has the following form:
-	 *  [ipToS=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public ActionSetIpToS(String actionStr) {
-	    this.fromString(actionStr);
-	}
+        /**
+         * Constructor from a string.
+         * <p/>
+         * The string has the following form:
+         * [ipToS=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public ActionSetIpToS(String actionStr) {
+            this.fromString(actionStr);
+        }
 
-	/**
-	 * Constructor for a given IP ToS (DSCP field, 6 bits).
-	 *
-	 * @param ipToS the IP ToS (DSCP field, 6 bits) to set.
-	 */
-	public ActionSetIpToS(byte ipToS) {
-	    this.ipToS = ipToS;
-	}
+        /**
+         * Constructor for a given IP ToS (DSCP field, 6 bits).
+         *
+         * @param ipToS the IP ToS (DSCP field, 6 bits) to set.
+         */
+        public ActionSetIpToS(byte ipToS) {
+            this.ipToS = ipToS;
+        }
 
-	/**
-	 * Get the IP ToS (DSCP field, 6 bits).
-	 *
-	 * @return the IP ToS (DSCP field, 6 bits).
-	 */
-	@JsonProperty("ipToS")
-	public byte ipToS() {
-	    return this.ipToS;
-	}
+        /**
+         * Get the IP ToS (DSCP field, 6 bits).
+         *
+         * @return the IP ToS (DSCP field, 6 bits).
+         */
+        @JsonProperty("ipToS")
+        public byte ipToS() {
+            return this.ipToS;
+        }
 
-	/**
-	 * Convert the action to a string.
-	 *
-	 * The string has the following form:
-	 *  [ipToS=XXX]
-	 *
-	 * @return the action as a string.
-	 */
-	@Override
-	public String toString() {
-	    String ret = "[";
-	    ret += "ipToS=" + ipToS;
-	    ret += "]";
+        /**
+         * Convert the action to a string.
+         * <p/>
+         * The string has the following form:
+         * [ipToS=XXX]
+         *
+         * @return the action as a string.
+         */
+        @Override
+        public String toString() {
+            String ret = "[";
+            ret += "ipToS=" + ipToS;
+            ret += "]";
 
-	    return ret;
-	}
+            return ret;
+        }
 
-	/**
-	 * Convert a string to an action.
-	 *
-	 * The string has the following form:
-	 *  [ipToS=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public void fromString(String actionStr) {
-	    String[] parts = actionStr.split("ipToS=");
-	    String decode = null;
+        /**
+         * Convert a string to an action.
+         * <p/>
+         * The string has the following form:
+         * [ipToS=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public void fromString(String actionStr) {
+            String[] parts = actionStr.split("ipToS=");
+            String decode = null;
 
-	    // Decode the value
-	    if (parts.length > 1)
-		decode = parts[1];
-	    if (decode != null) {
-		decode = decode.replace("]", "");
-		try {
-		    ipToS = Byte.valueOf(decode);
-		} catch (NumberFormatException e) {
-		    throw new IllegalArgumentException("Invalid action string");
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	}
+            // Decode the value
+            if (parts.length > 1)
+                decode = parts[1];
+            if (decode != null) {
+                decode = decode.replace("]", "");
+                try {
+                    ipToS = Byte.valueOf(decode);
+                } catch (NumberFormatException e) {
+                    throw new IllegalArgumentException("Invalid action string");
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        }
     }
 
     /**
@@ -796,239 +798,239 @@
      * Set the TCP/UDP source/destination port.
      */
     public static class ActionSetTcpUdpPort {
-	private short port;		// The TCP/UDP port to set
+        private short port;        // The TCP/UDP port to set
 
-	/**
-	 * Default constructor.
-	 */
-	public ActionSetTcpUdpPort() {
-	    this.port = 0;
-	}
+        /**
+         * Default constructor.
+         */
+        public ActionSetTcpUdpPort() {
+            this.port = 0;
+        }
 
-	/**
-	 * Copy constructor.
-	 *
-	 * @param other the object to copy from.
-	 */
-	public ActionSetTcpUdpPort(ActionSetTcpUdpPort other) {
-	    this.port = other.port;
-	}
+        /**
+         * Copy constructor.
+         *
+         * @param other the object to copy from.
+         */
+        public ActionSetTcpUdpPort(ActionSetTcpUdpPort other) {
+            this.port = other.port;
+        }
 
-	/**
-	 * Constructor from a string.
-	 *
-	 * The string has the following form:
-	 *  [port=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public ActionSetTcpUdpPort(String actionStr) {
-	    this.fromString(actionStr);
-	}
+        /**
+         * Constructor from a string.
+         * <p/>
+         * The string has the following form:
+         * [port=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public ActionSetTcpUdpPort(String actionStr) {
+            this.fromString(actionStr);
+        }
 
-	/**
-	 * Constructor for a given TCP/UDP port.
-	 *
-	 * @param port the TCP/UDP port to set.
-	 */
-	public ActionSetTcpUdpPort(short port) {
-	    this.port = port;
-	}
+        /**
+         * Constructor for a given TCP/UDP port.
+         *
+         * @param port the TCP/UDP port to set.
+         */
+        public ActionSetTcpUdpPort(short port) {
+            this.port = port;
+        }
 
-	/**
-	 * Get the TCP/UDP port.
-	 *
-	 * @return the TCP/UDP port.
-	 */
-	@JsonProperty("port")
-	public short port() {
-	    return this.port;
-	}
+        /**
+         * Get the TCP/UDP port.
+         *
+         * @return the TCP/UDP port.
+         */
+        @JsonProperty("port")
+        public short port() {
+            return this.port;
+        }
 
-	/**
-	 * Convert the action to a string.
-	 *
-	 * The string has the following form:
-	 *  [port=XXX]
-	 *
-	 * @return the action as a string.
-	 */
-	@Override
-	public String toString() {
-	    String ret = "[";
-	    ret += "port=" + port;
-	    ret += "]";
+        /**
+         * Convert the action to a string.
+         * <p/>
+         * The string has the following form:
+         * [port=XXX]
+         *
+         * @return the action as a string.
+         */
+        @Override
+        public String toString() {
+            String ret = "[";
+            ret += "port=" + port;
+            ret += "]";
 
-	    return ret;
-	}
+            return ret;
+        }
 
-	/**
-	 * Convert a string to an action.
-	 *
-	 * The string has the following form:
-	 *  [port=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public void fromString(String actionStr) {
-	    String[] parts = actionStr.split("port=");
-	    String decode = null;
+        /**
+         * Convert a string to an action.
+         * <p/>
+         * The string has the following form:
+         * [port=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public void fromString(String actionStr) {
+            String[] parts = actionStr.split("port=");
+            String decode = null;
 
-	    // Decode the value
-	    if (parts.length > 1)
-		decode = parts[1];
-	    if (decode != null) {
-		decode = decode.replace("]", "");
-		try {
-		    port = Short.valueOf(decode);
-		} catch (NumberFormatException e) {
-		    throw new IllegalArgumentException("Invalid action string");
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	}
+            // Decode the value
+            if (parts.length > 1)
+                decode = parts[1];
+            if (decode != null) {
+                decode = decode.replace("]", "");
+                try {
+                    port = Short.valueOf(decode);
+                } catch (NumberFormatException e) {
+                    throw new IllegalArgumentException("Invalid action string");
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        }
     }
 
     /**
      * Action structure for ACTION_ENQUEUE: Output to queue on port.
      */
     public static class ActionEnqueue {
-	private Port port;	// Port that queue belongs. Should
-				// refer to a valid physical port
-				// (i.e. < PORT_MAX) or PORT_IN_PORT
-	private int queueId;	// Where to enqueue the packets
+        private Port port;    // Port that queue belongs. Should
+        // refer to a valid physical port
+        // (i.e. < PORT_MAX) or PORT_IN_PORT
+        private int queueId;    // Where to enqueue the packets
 
-	/**
-	 * Default constructor.
-	 */
-	public ActionEnqueue() {
-	    this.port = null;
-	    this.queueId = 0;
-	}
+        /**
+         * Default constructor.
+         */
+        public ActionEnqueue() {
+            this.port = null;
+            this.queueId = 0;
+        }
 
-	/**
-	 * Copy constructor.
-	 *
-	 * @param other the object to copy from.
-	 */
-	public ActionEnqueue(ActionEnqueue other) {
-	    if (other.port != null)
-		this.port = new Port(other.port);
-	    this.queueId = other.queueId;
-	}
+        /**
+         * Copy constructor.
+         *
+         * @param other the object to copy from.
+         */
+        public ActionEnqueue(ActionEnqueue other) {
+            if (other.port != null)
+                this.port = new Port(other.port);
+            this.queueId = other.queueId;
+        }
 
-	/**
-	 * Constructor from a string.
-	 *
-	 * The string has the following form:
-	 *  [port=XXX queueId=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public ActionEnqueue(String actionStr) {
-	    this.fromString(actionStr);
-	}
+        /**
+         * Constructor from a string.
+         * <p/>
+         * The string has the following form:
+         * [port=XXX queueId=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public ActionEnqueue(String actionStr) {
+            this.fromString(actionStr);
+        }
 
-	/**
-	 * Constructor for a given port and queue ID.
-	 *
-	 * @param port the port to set.
-	 * @param queueId the queue ID on the port.
-	 */
-	public ActionEnqueue(Port port, int queueId) {
-	    this.port = port;
-	    this.queueId = queueId;
-	}
+        /**
+         * Constructor for a given port and queue ID.
+         *
+         * @param port    the port to set.
+         * @param queueId the queue ID on the port.
+         */
+        public ActionEnqueue(Port port, int queueId) {
+            this.port = port;
+            this.queueId = queueId;
+        }
 
-	/**
-	 * Get the port.
-	 *
-	 * @return the port.
-	 */
-	@JsonProperty("port")
-	public Port port() {
-	    return this.port;
-	}
+        /**
+         * Get the port.
+         *
+         * @return the port.
+         */
+        @JsonProperty("port")
+        public Port port() {
+            return this.port;
+        }
 
-	/**
-	 * Get the queue ID.
-	 *
-	 * @return the queue ID.
-	 */
-	@JsonProperty("queueId")
-	public int queueId() {
-	    return this.queueId;
-	}
+        /**
+         * Get the queue ID.
+         *
+         * @return the queue ID.
+         */
+        @JsonProperty("queueId")
+        public int queueId() {
+            return this.queueId;
+        }
 
-	/**
-	 * Convert the action to a string.
-	 *
-	 * The string has the following form:
-	 *  [port=XXX queueId=XXX]
-	 *
-	 * @return the action as a string.
-	 */
-	@Override
-	public String toString() {
-	    String ret = "[";
-	    ret += "port=" + port.toString();
-	    ret += " queueId=" + queueId;
-	    ret += "]";
+        /**
+         * Convert the action to a string.
+         * <p/>
+         * The string has the following form:
+         * [port=XXX queueId=XXX]
+         *
+         * @return the action as a string.
+         */
+        @Override
+        public String toString() {
+            String ret = "[";
+            ret += "port=" + port.toString();
+            ret += " queueId=" + queueId;
+            ret += "]";
 
-	    return ret;
-	}
+            return ret;
+        }
 
-	/**
-	 * Convert a string to an action.
-	 *
-	 * The string has the following form:
-	 *  [port=XXX queueId=XXX]
-	 *
-	 * @param actionStr the action as a string.
-	 */
-	public void fromString(String actionStr) {
-	    String[] parts = actionStr.split(" ");
-	    String decode = null;
+        /**
+         * Convert a string to an action.
+         * <p/>
+         * The string has the following form:
+         * [port=XXX queueId=XXX]
+         *
+         * @param actionStr the action as a string.
+         */
+        public void fromString(String actionStr) {
+            String[] parts = actionStr.split(" ");
+            String decode = null;
 
-	    // Decode the "port=XXX" part
-	    if (parts.length > 0)
-		decode = parts[0];
-	    if (decode != null) {
-		String[] tokens = decode.split("port=");
-		if (tokens.length > 1 && tokens[1] != null) {
-		    try {
-			Short valueShort = Short.valueOf(tokens[1]);
-			port = new Port(valueShort);
-		    } catch (NumberFormatException e) {
-			throw new IllegalArgumentException("Invalid action string");
-		    }
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
+            // Decode the "port=XXX" part
+            if (parts.length > 0)
+                decode = parts[0];
+            if (decode != null) {
+                String[] tokens = decode.split("port=");
+                if (tokens.length > 1 && tokens[1] != null) {
+                    try {
+                        Short valueShort = Short.valueOf(tokens[1]);
+                        port = new Port(valueShort);
+                    } catch (NumberFormatException e) {
+                        throw new IllegalArgumentException("Invalid action string");
+                    }
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
 
-	    // Decode the "queueId=XXX" part
-	    decode = null;
-	    if (parts.length > 1)
-		decode = parts[1];
-	    if (decode != null) {
-		decode = decode.replace("]", "");
-		String[] tokens = decode.split("queueId=");
-		if (tokens.length > 1 && tokens[1] != null) {
-		    try {
-			queueId = Short.valueOf(tokens[1]);
-		    } catch (NumberFormatException e) {
-			throw new IllegalArgumentException("Invalid action string");
-		    }
-		}
-	    } else {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	}
+            // Decode the "queueId=XXX" part
+            decode = null;
+            if (parts.length > 1)
+                decode = parts[1];
+            if (decode != null) {
+                decode = decode.replace("]", "");
+                String[] tokens = decode.split("queueId=");
+                if (tokens.length > 1 && tokens[1] != null) {
+                    try {
+                        queueId = Short.valueOf(tokens[1]);
+                    } catch (NumberFormatException e) {
+                        throw new IllegalArgumentException("Invalid action string");
+                    }
+                }
+            } else {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        }
     }
 
-    private ActionValues actionType;	// The action type
+    private ActionValues actionType;    // The action type
 
     //
     // The actions.
@@ -1051,7 +1053,7 @@
      * Default constructor.
      */
     public FlowEntryAction() {
-	actionType = ActionValues.ACTION_VENDOR;	// XXX: Initial value
+        actionType = ActionValues.ACTION_VENDOR;    // XXX: Initial value
     }
 
     /**
@@ -1060,80 +1062,80 @@
      * @param other the object to copy from.
      */
     public FlowEntryAction(FlowEntryAction other) {
-	this.actionType = other.actionType;
+        this.actionType = other.actionType;
 
-	//
-	if (other.actionOutput != null)
-	    this.actionOutput = new ActionOutput(other.actionOutput);
-	else
-	    this.actionOutput = null;
-	//
-	if (other.actionSetVlanId != null)
-	    this.actionSetVlanId = new ActionSetVlanId(other.actionSetVlanId);
-	else
-	    this.actionSetVlanId = null;
-	//
-	if (other.actionSetVlanPriority != null)
-	    this.actionSetVlanPriority = new ActionSetVlanPriority(other.actionSetVlanPriority);
-	else
-	    this.actionSetVlanPriority = null;
-	//
-	if (other.actionStripVlan != null)
-	    this.actionStripVlan = new ActionStripVlan(other.actionStripVlan);
-	else
-	    this.actionStripVlan = null;
-	//
-	if (other.actionSetEthernetSrcAddr != null)
-	    this.actionSetEthernetSrcAddr = new ActionSetEthernetAddr(other.actionSetEthernetSrcAddr);
-	else
-	    this.actionSetEthernetSrcAddr = null;
-	//
-	if (other.actionSetEthernetDstAddr != null)
-	    this.actionSetEthernetDstAddr = new ActionSetEthernetAddr(other.actionSetEthernetDstAddr);
-	else
-	    this.actionSetEthernetDstAddr = null;
-	//
-	if (other.actionSetIPv4SrcAddr != null)
-	    this.actionSetIPv4SrcAddr = new ActionSetIPv4Addr(other.actionSetIPv4SrcAddr);
-	else
-	    this.actionSetIPv4SrcAddr = null;
-	//
-	if (other.actionSetIPv4DstAddr != null)
-	    this.actionSetIPv4DstAddr = new ActionSetIPv4Addr(other.actionSetIPv4DstAddr);
-	else
-	    this.actionSetIPv4DstAddr = null;
-	//
-	if (other.actionSetIpToS != null)
-	    this.actionSetIpToS = new ActionSetIpToS(other.actionSetIpToS);
-	else
-	    this.actionSetIpToS = null;
-	//
-	if (other.actionSetTcpUdpSrcPort != null)
-	    this.actionSetTcpUdpSrcPort = new ActionSetTcpUdpPort(other.actionSetTcpUdpSrcPort);
-	else
-	    this.actionSetTcpUdpSrcPort = null;
-	//
-	if (other.actionSetTcpUdpDstPort != null)
-	    this.actionSetTcpUdpDstPort = new ActionSetTcpUdpPort(other.actionSetTcpUdpDstPort);
-	else
-	    this.actionSetTcpUdpDstPort = null;
-	//
-	if (other.actionEnqueue != null)
-	    this.actionEnqueue = new ActionEnqueue(other.actionEnqueue);
-	else
-	    this.actionEnqueue = null;
+        //
+        if (other.actionOutput != null)
+            this.actionOutput = new ActionOutput(other.actionOutput);
+        else
+            this.actionOutput = null;
+        //
+        if (other.actionSetVlanId != null)
+            this.actionSetVlanId = new ActionSetVlanId(other.actionSetVlanId);
+        else
+            this.actionSetVlanId = null;
+        //
+        if (other.actionSetVlanPriority != null)
+            this.actionSetVlanPriority = new ActionSetVlanPriority(other.actionSetVlanPriority);
+        else
+            this.actionSetVlanPriority = null;
+        //
+        if (other.actionStripVlan != null)
+            this.actionStripVlan = new ActionStripVlan(other.actionStripVlan);
+        else
+            this.actionStripVlan = null;
+        //
+        if (other.actionSetEthernetSrcAddr != null)
+            this.actionSetEthernetSrcAddr = new ActionSetEthernetAddr(other.actionSetEthernetSrcAddr);
+        else
+            this.actionSetEthernetSrcAddr = null;
+        //
+        if (other.actionSetEthernetDstAddr != null)
+            this.actionSetEthernetDstAddr = new ActionSetEthernetAddr(other.actionSetEthernetDstAddr);
+        else
+            this.actionSetEthernetDstAddr = null;
+        //
+        if (other.actionSetIPv4SrcAddr != null)
+            this.actionSetIPv4SrcAddr = new ActionSetIPv4Addr(other.actionSetIPv4SrcAddr);
+        else
+            this.actionSetIPv4SrcAddr = null;
+        //
+        if (other.actionSetIPv4DstAddr != null)
+            this.actionSetIPv4DstAddr = new ActionSetIPv4Addr(other.actionSetIPv4DstAddr);
+        else
+            this.actionSetIPv4DstAddr = null;
+        //
+        if (other.actionSetIpToS != null)
+            this.actionSetIpToS = new ActionSetIpToS(other.actionSetIpToS);
+        else
+            this.actionSetIpToS = null;
+        //
+        if (other.actionSetTcpUdpSrcPort != null)
+            this.actionSetTcpUdpSrcPort = new ActionSetTcpUdpPort(other.actionSetTcpUdpSrcPort);
+        else
+            this.actionSetTcpUdpSrcPort = null;
+        //
+        if (other.actionSetTcpUdpDstPort != null)
+            this.actionSetTcpUdpDstPort = new ActionSetTcpUdpPort(other.actionSetTcpUdpDstPort);
+        else
+            this.actionSetTcpUdpDstPort = null;
+        //
+        if (other.actionEnqueue != null)
+            this.actionEnqueue = new ActionEnqueue(other.actionEnqueue);
+        else
+            this.actionEnqueue = null;
     }
 
     /**
      * Constructor from a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  [type=XXX action=XXX]
+     * [type=XXX action=XXX]
      *
      * @param actionStr the action as a string.
      */
     public FlowEntryAction(String actionStr) {
-	this.fromString(actionStr);
+        this.fromString(actionStr);
     }
 
     /**
@@ -1142,7 +1144,9 @@
      * @return the action type.
      */
     @JsonProperty("actionType")
-    public ActionValues actionType() { return actionType; }
+    public ActionValues actionType() {
+        return actionType;
+    }
 
     /**
      * Get the output action.
@@ -1150,7 +1154,9 @@
      * @return the output action.
      */
     @JsonProperty("actionOutput")
-    public ActionOutput actionOutput() { return actionOutput; }
+    public ActionOutput actionOutput() {
+        return actionOutput;
+    }
 
     /**
      * Set the output action on a port.
@@ -1159,8 +1165,8 @@
      */
     @JsonProperty("actionOutput")
     public void setActionOutput(ActionOutput action) {
-	actionOutput = action;
-	actionType = ActionValues.ACTION_OUTPUT;
+        actionOutput = action;
+        actionType = ActionValues.ACTION_OUTPUT;
     }
 
     /**
@@ -1169,8 +1175,8 @@
      * @param port the output port to set.
      */
     public void setActionOutput(Port port) {
-	actionOutput = new ActionOutput(port);
-	actionType = ActionValues.ACTION_OUTPUT;
+        actionOutput = new ActionOutput(port);
+        actionType = ActionValues.ACTION_OUTPUT;
     }
 
     /**
@@ -1179,9 +1185,9 @@
      * @param maxLen the maximum length (in bytes) to send to controller.
      */
     public void setActionOutputToController(short maxLen) {
-	Port port = new Port(Port.PortValues.PORT_CONTROLLER);
-	actionOutput = new ActionOutput(port, maxLen);
-	actionType = ActionValues.ACTION_OUTPUT;
+        Port port = new Port(Port.PortValues.PORT_CONTROLLER);
+        actionOutput = new ActionOutput(port, maxLen);
+        actionType = ActionValues.ACTION_OUTPUT;
     }
 
     /**
@@ -1190,7 +1196,9 @@
      * @return the action to set the VLAN ID.
      */
     @JsonProperty("actionSetVlanId")
-    public ActionSetVlanId actionSetVlanId() { return actionSetVlanId; }
+    public ActionSetVlanId actionSetVlanId() {
+        return actionSetVlanId;
+    }
 
     /**
      * Set the action to set the VLAN ID.
@@ -1199,8 +1207,8 @@
      */
     @JsonProperty("actionSetVlanId")
     public void setActionSetVlanId(ActionSetVlanId action) {
-	actionSetVlanId = action;
-	actionType = ActionValues.ACTION_SET_VLAN_VID;
+        actionSetVlanId = action;
+        actionType = ActionValues.ACTION_SET_VLAN_VID;
     }
 
     /**
@@ -1209,8 +1217,8 @@
      * @param vlanId the VLAN ID to set.
      */
     public void setActionSetVlanId(short vlanId) {
-	actionSetVlanId = new ActionSetVlanId(vlanId);
-	actionType = ActionValues.ACTION_SET_VLAN_VID;
+        actionSetVlanId = new ActionSetVlanId(vlanId);
+        actionType = ActionValues.ACTION_SET_VLAN_VID;
     }
 
     /**
@@ -1220,7 +1228,7 @@
      */
     @JsonProperty("actionSetVlanPriority")
     public ActionSetVlanPriority actionSetVlanPriority() {
-	return actionSetVlanPriority;
+        return actionSetVlanPriority;
     }
 
     /**
@@ -1230,8 +1238,8 @@
      */
     @JsonProperty("actionSetVlanPriority")
     public void setActionSetVlanPriority(ActionSetVlanPriority action) {
-	actionSetVlanPriority = action;
-	actionType = ActionValues.ACTION_SET_VLAN_PCP;
+        actionSetVlanPriority = action;
+        actionType = ActionValues.ACTION_SET_VLAN_PCP;
     }
 
     /**
@@ -1240,8 +1248,8 @@
      * @param vlanPriority the VLAN priority to set.
      */
     public void setActionSetVlanPriority(byte vlanPriority) {
-	actionSetVlanPriority = new ActionSetVlanPriority(vlanPriority);
-	actionType = ActionValues.ACTION_SET_VLAN_PCP;
+        actionSetVlanPriority = new ActionSetVlanPriority(vlanPriority);
+        actionType = ActionValues.ACTION_SET_VLAN_PCP;
     }
 
     /**
@@ -1251,7 +1259,7 @@
      */
     @JsonProperty("actionStripVlan")
     public ActionStripVlan actionStripVlan() {
-	return actionStripVlan;
+        return actionStripVlan;
     }
 
     /**
@@ -1261,8 +1269,8 @@
      */
     @JsonProperty("actionStripVlan")
     public void setActionStripVlan(ActionStripVlan action) {
-	actionStripVlan = action;
-	actionType = ActionValues.ACTION_STRIP_VLAN;
+        actionStripVlan = action;
+        actionType = ActionValues.ACTION_STRIP_VLAN;
     }
 
     /**
@@ -1271,8 +1279,8 @@
      * @param stripVlan if true, strip the VLAN header.
      */
     public void setActionStripVlan(boolean stripVlan) {
-	actionStripVlan = new ActionStripVlan(stripVlan);
-	actionType = ActionValues.ACTION_STRIP_VLAN;
+        actionStripVlan = new ActionStripVlan(stripVlan);
+        actionType = ActionValues.ACTION_STRIP_VLAN;
     }
 
     /**
@@ -1282,7 +1290,7 @@
      */
     @JsonProperty("actionSetEthernetSrcAddr")
     public ActionSetEthernetAddr actionSetEthernetSrcAddr() {
-	return actionSetEthernetSrcAddr;
+        return actionSetEthernetSrcAddr;
     }
 
     /**
@@ -1292,8 +1300,8 @@
      */
     @JsonProperty("actionSetEthernetSrcAddr")
     public void setActionSetEthernetSrcAddr(ActionSetEthernetAddr action) {
-	actionSetEthernetSrcAddr = action;
-	actionType = ActionValues.ACTION_SET_DL_SRC;
+        actionSetEthernetSrcAddr = action;
+        actionType = ActionValues.ACTION_SET_DL_SRC;
     }
 
     /**
@@ -1302,8 +1310,8 @@
      * @param addr the MAC address to set as the Ethernet source address.
      */
     public void setActionSetEthernetSrcAddr(MACAddress addr) {
-	actionSetEthernetSrcAddr = new ActionSetEthernetAddr(addr);
-	actionType = ActionValues.ACTION_SET_DL_SRC;
+        actionSetEthernetSrcAddr = new ActionSetEthernetAddr(addr);
+        actionType = ActionValues.ACTION_SET_DL_SRC;
     }
 
     /**
@@ -1313,7 +1321,7 @@
      */
     @JsonProperty("actionSetEthernetDstAddr")
     public ActionSetEthernetAddr actionSetEthernetDstAddr() {
-	return actionSetEthernetDstAddr;
+        return actionSetEthernetDstAddr;
     }
 
     /**
@@ -1323,8 +1331,8 @@
      */
     @JsonProperty("actionSetEthernetDstAddr")
     public void setActionSetEthernetDstAddr(ActionSetEthernetAddr action) {
-	actionSetEthernetDstAddr = action;
-	actionType = ActionValues.ACTION_SET_DL_DST;
+        actionSetEthernetDstAddr = action;
+        actionType = ActionValues.ACTION_SET_DL_DST;
     }
 
     /**
@@ -1333,8 +1341,8 @@
      * @param addr the MAC address to set as the Ethernet destination address.
      */
     public void setActionSetEthernetDstAddr(MACAddress addr) {
-	actionSetEthernetDstAddr = new ActionSetEthernetAddr(addr);
-	actionType = ActionValues.ACTION_SET_DL_DST;
+        actionSetEthernetDstAddr = new ActionSetEthernetAddr(addr);
+        actionType = ActionValues.ACTION_SET_DL_DST;
     }
 
     /**
@@ -1344,7 +1352,7 @@
      */
     @JsonProperty("actionSetIPv4SrcAddr")
     public ActionSetIPv4Addr actionSetIPv4SrcAddr() {
-	return actionSetIPv4SrcAddr;
+        return actionSetIPv4SrcAddr;
     }
 
     /**
@@ -1354,8 +1362,8 @@
      */
     @JsonProperty("actionSetIPv4SrcAddr")
     public void setActionSetIPv4SrcAddr(ActionSetIPv4Addr action) {
-	actionSetIPv4SrcAddr = action;
-	actionType = ActionValues.ACTION_SET_NW_SRC;
+        actionSetIPv4SrcAddr = action;
+        actionType = ActionValues.ACTION_SET_NW_SRC;
     }
 
     /**
@@ -1364,8 +1372,8 @@
      * @param addr the IPv4 address to set as the IPv4 source address.
      */
     public void setActionSetIPv4SrcAddr(IPv4 addr) {
-	actionSetIPv4SrcAddr = new ActionSetIPv4Addr(addr);
-	actionType = ActionValues.ACTION_SET_NW_SRC;
+        actionSetIPv4SrcAddr = new ActionSetIPv4Addr(addr);
+        actionType = ActionValues.ACTION_SET_NW_SRC;
     }
 
     /**
@@ -1375,7 +1383,7 @@
      */
     @JsonProperty("actionSetIPv4DstAddr")
     public ActionSetIPv4Addr actionSetIPv4DstAddr() {
-	return actionSetIPv4DstAddr;
+        return actionSetIPv4DstAddr;
     }
 
     /**
@@ -1385,8 +1393,8 @@
      */
     @JsonProperty("actionSetIPv4DstAddr")
     public void setActionSetIPv4DstAddr(ActionSetIPv4Addr action) {
-	actionSetIPv4DstAddr = action;
-	actionType = ActionValues.ACTION_SET_NW_DST;
+        actionSetIPv4DstAddr = action;
+        actionType = ActionValues.ACTION_SET_NW_DST;
     }
 
     /**
@@ -1395,8 +1403,8 @@
      * @param addr the IPv4 address to set as the IPv4 destination address.
      */
     public void setActionSetIPv4DstAddr(IPv4 addr) {
-	actionSetIPv4DstAddr = new ActionSetIPv4Addr(addr);
-	actionType = ActionValues.ACTION_SET_NW_DST;
+        actionSetIPv4DstAddr = new ActionSetIPv4Addr(addr);
+        actionType = ActionValues.ACTION_SET_NW_DST;
     }
 
     /**
@@ -1406,7 +1414,7 @@
      */
     @JsonProperty("actionSetIpToS")
     public ActionSetIpToS actionSetIpToS() {
-	return actionSetIpToS;
+        return actionSetIpToS;
     }
 
     /**
@@ -1416,8 +1424,8 @@
      */
     @JsonProperty("actionSetIpToS")
     public void setActionSetIpToS(ActionSetIpToS action) {
-	actionSetIpToS = action;
-	actionType = ActionValues.ACTION_SET_NW_TOS;
+        actionSetIpToS = action;
+        actionType = ActionValues.ACTION_SET_NW_TOS;
     }
 
     /**
@@ -1426,8 +1434,8 @@
      * @param ipToS the IP ToS (DSCP field, 6 bits) to set.
      */
     public void setActionSetIpToS(byte ipToS) {
-	actionSetIpToS = new ActionSetIpToS(ipToS);
-	actionType = ActionValues.ACTION_SET_NW_TOS;
+        actionSetIpToS = new ActionSetIpToS(ipToS);
+        actionType = ActionValues.ACTION_SET_NW_TOS;
     }
 
     /**
@@ -1437,7 +1445,7 @@
      */
     @JsonProperty("actionSetTcpUdpSrcPort")
     public ActionSetTcpUdpPort actionSetTcpUdpSrcPort() {
-	return actionSetTcpUdpSrcPort;
+        return actionSetTcpUdpSrcPort;
     }
 
     /**
@@ -1447,8 +1455,8 @@
      */
     @JsonProperty("actionSetTcpUdpSrcPort")
     public void setActionSetTcpUdpSrcPort(ActionSetTcpUdpPort action) {
-	actionSetTcpUdpSrcPort = action;
-	actionType = ActionValues.ACTION_SET_TP_SRC;
+        actionSetTcpUdpSrcPort = action;
+        actionType = ActionValues.ACTION_SET_TP_SRC;
     }
 
     /**
@@ -1457,8 +1465,8 @@
      * @param port the TCP/UDP port to set as the TCP/UDP source port.
      */
     public void setActionSetTcpUdpSrcPort(short port) {
-	actionSetTcpUdpSrcPort = new ActionSetTcpUdpPort(port);
-	actionType = ActionValues.ACTION_SET_TP_SRC;
+        actionSetTcpUdpSrcPort = new ActionSetTcpUdpPort(port);
+        actionType = ActionValues.ACTION_SET_TP_SRC;
     }
 
     /**
@@ -1468,7 +1476,7 @@
      */
     @JsonProperty("actionSetTcpUdpDstPort")
     public ActionSetTcpUdpPort actionSetTcpUdpDstPort() {
-	return actionSetTcpUdpDstPort;
+        return actionSetTcpUdpDstPort;
     }
 
     /**
@@ -1478,8 +1486,8 @@
      */
     @JsonProperty("actionSetTcpUdpDstPort")
     public void setActionSetTcpUdpDstPort(ActionSetTcpUdpPort action) {
-	actionSetTcpUdpDstPort = action;
-	actionType = ActionValues.ACTION_SET_TP_DST;
+        actionSetTcpUdpDstPort = action;
+        actionType = ActionValues.ACTION_SET_TP_DST;
     }
 
     /**
@@ -1488,8 +1496,8 @@
      * @param port the TCP/UDP port to set as the TCP/UDP destination port.
      */
     public void setActionSetTcpUdpDstPort(short port) {
-	actionSetTcpUdpDstPort = new ActionSetTcpUdpPort(port);
-	actionType = ActionValues.ACTION_SET_TP_DST;
+        actionSetTcpUdpDstPort = new ActionSetTcpUdpPort(port);
+        actionType = ActionValues.ACTION_SET_TP_DST;
     }
 
     /**
@@ -1498,7 +1506,9 @@
      * @return the action to output to queue on a port.
      */
     @JsonProperty("actionEnqueue")
-    public ActionEnqueue actionEnqueue() { return actionEnqueue; }
+    public ActionEnqueue actionEnqueue() {
+        return actionEnqueue;
+    }
 
     /**
      * Set the action to output to queue on a port.
@@ -1507,171 +1517,171 @@
      */
     @JsonProperty("actionEnqueue")
     public void setActionEnqueue(ActionEnqueue action) {
-	actionEnqueue = action;
-	actionType = ActionValues.ACTION_ENQUEUE;
+        actionEnqueue = action;
+        actionType = ActionValues.ACTION_ENQUEUE;
     }
 
     /**
      * Set the action to output to queue on a port.
      *
-     * @param port the port to set.
+     * @param port    the port to set.
      * @param queueId the queue ID to set.
      */
     public void setActionEnqueue(Port port, int queueId) {
-	actionEnqueue = new ActionEnqueue(port, queueId);
-	actionType = ActionValues.ACTION_ENQUEUE;
+        actionEnqueue = new ActionEnqueue(port, queueId);
+        actionType = ActionValues.ACTION_ENQUEUE;
     }
 
     /**
      * Convert the action to a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  [type=XXX action=XXX]
+     * [type=XXX action=XXX]
      *
      * @return the action as a string.
      */
     @Override
     public String toString() {
-	String ret = "[";
-	ret += "type=" + actionType;
-	switch (actionType) {
-	case ACTION_OUTPUT:
-	    ret += " action=" + actionOutput.toString();
-	    break;
-	case ACTION_SET_VLAN_VID:
-	    ret += " action=" + actionSetVlanId.toString();
-	    break;
-	case ACTION_SET_VLAN_PCP:
-	    ret += " action=" + actionSetVlanPriority.toString();
-	    break;
-	case ACTION_STRIP_VLAN:
-	    ret += " action=" + actionStripVlan.toString();
-	    break;
-	case ACTION_SET_DL_SRC:
-	    ret += " action=" + actionSetEthernetSrcAddr.toString();
-	    break;
-	case ACTION_SET_DL_DST:
-	    ret += " action=" + actionSetEthernetDstAddr.toString();
-	    break;
-	case ACTION_SET_NW_SRC:
-	    ret += " action=" + actionSetIPv4SrcAddr.toString();
-	    break;
-	case ACTION_SET_NW_DST:
-	    ret += " action=" + actionSetIPv4DstAddr.toString();
-	    break;
-	case ACTION_SET_NW_TOS:
-	    ret += " action=" + actionSetIpToS.toString();
-	    break;
-	case ACTION_SET_TP_SRC:
-	    ret += " action=" + actionSetTcpUdpSrcPort.toString();
-	    break;
-	case ACTION_SET_TP_DST:
-	    ret += " action=" + actionSetTcpUdpDstPort.toString();
-	    break;
-	case ACTION_ENQUEUE:
-	    ret += " action=" + actionEnqueue.toString();
-	    break;
-	case ACTION_VENDOR:
-	    ret += " action=VENDOR";
-	    break;
-	}
-	ret += "]";
+        String ret = "[";
+        ret += "type=" + actionType;
+        switch (actionType) {
+            case ACTION_OUTPUT:
+                ret += " action=" + actionOutput.toString();
+                break;
+            case ACTION_SET_VLAN_VID:
+                ret += " action=" + actionSetVlanId.toString();
+                break;
+            case ACTION_SET_VLAN_PCP:
+                ret += " action=" + actionSetVlanPriority.toString();
+                break;
+            case ACTION_STRIP_VLAN:
+                ret += " action=" + actionStripVlan.toString();
+                break;
+            case ACTION_SET_DL_SRC:
+                ret += " action=" + actionSetEthernetSrcAddr.toString();
+                break;
+            case ACTION_SET_DL_DST:
+                ret += " action=" + actionSetEthernetDstAddr.toString();
+                break;
+            case ACTION_SET_NW_SRC:
+                ret += " action=" + actionSetIPv4SrcAddr.toString();
+                break;
+            case ACTION_SET_NW_DST:
+                ret += " action=" + actionSetIPv4DstAddr.toString();
+                break;
+            case ACTION_SET_NW_TOS:
+                ret += " action=" + actionSetIpToS.toString();
+                break;
+            case ACTION_SET_TP_SRC:
+                ret += " action=" + actionSetTcpUdpSrcPort.toString();
+                break;
+            case ACTION_SET_TP_DST:
+                ret += " action=" + actionSetTcpUdpDstPort.toString();
+                break;
+            case ACTION_ENQUEUE:
+                ret += " action=" + actionEnqueue.toString();
+                break;
+            case ACTION_VENDOR:
+                ret += " action=VENDOR";
+                break;
+        }
+        ret += "]";
 
-	return ret;
+        return ret;
     }
 
     /**
      * Convert a string to an action.
-     *
+     * <p/>
      * The string has the following form:
-     *  [type=XXX action=XXX]
+     * [type=XXX action=XXX]
      *
      * @param actionStr the action as a string.
      */
     public void fromString(String actionStr) {
-	String[] parts = actionStr.split("type=");
-	String decode = null;
+        String[] parts = actionStr.split("type=");
+        String decode = null;
 
-	// Extract the string after the "type="
-	if (parts.length > 1)
-	    decode = parts[1];
-	if (decode == null)
-	    throw new IllegalArgumentException("Invalid action string");
+        // Extract the string after the "type="
+        if (parts.length > 1)
+            decode = parts[1];
+        if (decode == null)
+            throw new IllegalArgumentException("Invalid action string");
 
-	// Remove the trailing ']'
-	if ((decode.length() > 0) && (decode.charAt(decode.length() - 1) == ']')) {
-	    decode = decode.substring(0, decode.length() - 1);
-	} else {
-	    throw new IllegalArgumentException("Invalid action string");
-	}
+        // Remove the trailing ']'
+        if ((decode.length() > 0) && (decode.charAt(decode.length() - 1) == ']')) {
+            decode = decode.substring(0, decode.length() - 1);
+        } else {
+            throw new IllegalArgumentException("Invalid action string");
+        }
 
-	// Extract the type value and the action value
-	parts = decode.split(" action=");
+        // Extract the type value and the action value
+        parts = decode.split(" action=");
 
-	// Decode the "type=XXX" payload
-	if (parts.length > 0)
-	    decode = parts[0];
-	if (decode != null) {
-	    try {
-		actionType = Enum.valueOf(ActionValues.class, decode);
-	    } catch (IllegalArgumentException e) {
-		throw new IllegalArgumentException("Invalid action string");
-	    }
-	} else {
-	    throw new IllegalArgumentException("Invalid action string");
-	}
+        // Decode the "type=XXX" payload
+        if (parts.length > 0)
+            decode = parts[0];
+        if (decode != null) {
+            try {
+                actionType = Enum.valueOf(ActionValues.class, decode);
+            } catch (IllegalArgumentException e) {
+                throw new IllegalArgumentException("Invalid action string");
+            }
+        } else {
+            throw new IllegalArgumentException("Invalid action string");
+        }
 
-	// Decode the "action=XXX" payload
-	decode = null;
-	if (parts.length > 1)
-	    decode = parts[1];
-	if (decode == null)
-	    throw new IllegalArgumentException("Invalid action string");
-	//
-	try {
-	    switch (actionType) {
-	    case ACTION_OUTPUT:
-		actionOutput = new ActionOutput(decode);
-		break;
-	    case ACTION_SET_VLAN_VID:
-		actionSetVlanId = new ActionSetVlanId(decode);
-		break;
-	    case ACTION_SET_VLAN_PCP:
-		actionSetVlanPriority = new ActionSetVlanPriority(decode);
-		break;
-	    case ACTION_STRIP_VLAN:
-		actionStripVlan = new ActionStripVlan(decode);
-		break;
-	    case ACTION_SET_DL_SRC:
-		actionSetEthernetSrcAddr = new ActionSetEthernetAddr(decode);
-		break;
-	    case ACTION_SET_DL_DST:
-		actionSetEthernetDstAddr = new ActionSetEthernetAddr(decode);
-		break;
-	    case ACTION_SET_NW_SRC:
-		actionSetIPv4SrcAddr = new ActionSetIPv4Addr(decode);
-		break;
-	    case ACTION_SET_NW_DST:
-		actionSetIPv4DstAddr = new ActionSetIPv4Addr(decode);
-		break;
-	    case ACTION_SET_NW_TOS:
-		actionSetIpToS = new ActionSetIpToS(decode);
-		break;
-	    case ACTION_SET_TP_SRC:
-		actionSetTcpUdpSrcPort = new ActionSetTcpUdpPort(decode);
-		break;
-	    case ACTION_SET_TP_DST:
-		actionSetTcpUdpDstPort = new ActionSetTcpUdpPort(decode);
-		break;
-	    case ACTION_ENQUEUE:
-		actionEnqueue = new ActionEnqueue(decode);
-		break;
-	    case ACTION_VENDOR:
-		// TODO: Handle it as appropriate
-		break;
-	    }
-	} catch (IllegalArgumentException e) {
-	    throw new IllegalArgumentException("Invalid action string");
-	}
+        // Decode the "action=XXX" payload
+        decode = null;
+        if (parts.length > 1)
+            decode = parts[1];
+        if (decode == null)
+            throw new IllegalArgumentException("Invalid action string");
+        //
+        try {
+            switch (actionType) {
+                case ACTION_OUTPUT:
+                    actionOutput = new ActionOutput(decode);
+                    break;
+                case ACTION_SET_VLAN_VID:
+                    actionSetVlanId = new ActionSetVlanId(decode);
+                    break;
+                case ACTION_SET_VLAN_PCP:
+                    actionSetVlanPriority = new ActionSetVlanPriority(decode);
+                    break;
+                case ACTION_STRIP_VLAN:
+                    actionStripVlan = new ActionStripVlan(decode);
+                    break;
+                case ACTION_SET_DL_SRC:
+                    actionSetEthernetSrcAddr = new ActionSetEthernetAddr(decode);
+                    break;
+                case ACTION_SET_DL_DST:
+                    actionSetEthernetDstAddr = new ActionSetEthernetAddr(decode);
+                    break;
+                case ACTION_SET_NW_SRC:
+                    actionSetIPv4SrcAddr = new ActionSetIPv4Addr(decode);
+                    break;
+                case ACTION_SET_NW_DST:
+                    actionSetIPv4DstAddr = new ActionSetIPv4Addr(decode);
+                    break;
+                case ACTION_SET_NW_TOS:
+                    actionSetIpToS = new ActionSetIpToS(decode);
+                    break;
+                case ACTION_SET_TP_SRC:
+                    actionSetTcpUdpSrcPort = new ActionSetTcpUdpPort(decode);
+                    break;
+                case ACTION_SET_TP_DST:
+                    actionSetTcpUdpDstPort = new ActionSetTcpUdpPort(decode);
+                    break;
+                case ACTION_ENQUEUE:
+                    actionEnqueue = new ActionEnqueue(decode);
+                    break;
+                case ACTION_VENDOR:
+                    // TODO: Handle it as appropriate
+                    break;
+            }
+        } catch (IllegalArgumentException e) {
+            throw new IllegalArgumentException("Invalid action string");
+        }
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntryActions.java b/src/main/java/net/onrc/onos/core/util/FlowEntryActions.java
index 8839ceb..fc55932 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryActions.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryActions.java
@@ -7,29 +7,29 @@
 
 /**
  * The class representing multiple Flow Entry actions.
- *
+ * <p/>
  * A set of Flow Entry actions need to be applied to each packet.
  */
 public class FlowEntryActions {
-    private ArrayList<FlowEntryAction> actions;	// The Flow Entry Actions
+    private ArrayList<FlowEntryAction> actions;    // The Flow Entry Actions
 
     /**
      * Default constructor.
      */
     public FlowEntryActions() {
-	actions = new ArrayList<FlowEntryAction>();
+        actions = new ArrayList<FlowEntryAction>();
     }
 
     /**
      * Constructor from a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  [[type=XXX action=XXX];[type=XXX action=XXX];...;]
+     * [[type=XXX action=XXX];[type=XXX action=XXX];...;]
      *
      * @param actionsStr the set of actions as a string.
      */
     public FlowEntryActions(String actionsStr) {
-	this.fromString(actionsStr);
+        this.fromString(actionsStr);
     }
 
     /**
@@ -38,12 +38,12 @@
      * @param other the object to copy from.
      */
     public FlowEntryActions(FlowEntryActions other) {
-	actions = new ArrayList<FlowEntryAction>();
+        actions = new ArrayList<FlowEntryAction>();
 
-	for (FlowEntryAction action : other.actions) {
-	    FlowEntryAction newAction = new FlowEntryAction(action);
-	    actions.add(newAction);
-	}
+        for (FlowEntryAction action : other.actions) {
+            FlowEntryAction newAction = new FlowEntryAction(action);
+            actions.add(newAction);
+        }
     }
 
     /**
@@ -53,7 +53,7 @@
      */
     @JsonProperty("actions")
     public ArrayList<FlowEntryAction> actions() {
-	return actions;
+        return actions;
     }
 
     /**
@@ -63,7 +63,7 @@
      */
     @JsonProperty("actions")
     public void setActions(ArrayList<FlowEntryAction> actions) {
-	this.actions = actions;
+        this.actions = actions;
     }
 
     /**
@@ -72,7 +72,7 @@
      * @param flowEntryAction the Flow Entry Action to add.
      */
     public void addAction(FlowEntryAction flowEntryAction) {
-	actions.add(flowEntryAction);
+        actions.add(flowEntryAction);
     }
 
     /**
@@ -82,67 +82,67 @@
      */
     @JsonIgnore
     public Boolean isEmpty() {
-	return actions.isEmpty();
+        return actions.isEmpty();
     }
 
     /**
      * Convert the set of actions to a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  [[type=XXX action=XXX];[type=XXX action=XXX];...;]
+     * [[type=XXX action=XXX];[type=XXX action=XXX];...;]
      *
      * @return the set of actions as a string.
      */
     @Override
     public String toString() {
-	String ret = "[";
-	for (FlowEntryAction action : actions) {
-	    ret += action.toString() + ";";
-	}
-	ret += "]";
+        String ret = "[";
+        for (FlowEntryAction action : actions) {
+            ret += action.toString() + ";";
+        }
+        ret += "]";
 
-	return ret;
+        return ret;
     }
 
     /**
      * Convert a string to a set of actions.
-     *
+     * <p/>
      * The string has the following form:
-     *  [[type=XXX action=XXX];[type=XXX action=XXX];...;]
+     * [[type=XXX action=XXX];[type=XXX action=XXX];...;]
      *
      * @param actionsStr the set of actions as a string.
      */
     public void fromString(String actionsStr) {
-	String decode = actionsStr;
+        String decode = actionsStr;
 
-	actions = new ArrayList<FlowEntryAction>();
+        actions = new ArrayList<FlowEntryAction>();
 
-	if (decode.isEmpty())
-	    return;		// Nothing to do
+        if (decode.isEmpty())
+            return;        // Nothing to do
 
-	// Remove the '[' and ']' in the beginning and the end of the string
-	if ((decode.length() > 1) && (decode.charAt(0) == '[') &&
-	    (decode.charAt(decode.length() - 1) == ']')) {
-	    decode = decode.substring(1, decode.length() - 1);
-	} else {
-	    throw new IllegalArgumentException("Invalid action string");
-	}
+        // Remove the '[' and ']' in the beginning and the end of the string
+        if ((decode.length() > 1) && (decode.charAt(0) == '[') &&
+                (decode.charAt(decode.length() - 1) == ']')) {
+            decode = decode.substring(1, decode.length() - 1);
+        } else {
+            throw new IllegalArgumentException("Invalid action string");
+        }
 
-	// Split the string, and decode each action
-	String[] parts = decode.split(";");
-	for (int i = 0; i < parts.length; i++) {
-	    decode = parts[i];
-	    if ((decode == null) || decode.isEmpty())
-		continue;
-	    FlowEntryAction flowEntryAction = null;
-	    try {
-		flowEntryAction = new FlowEntryAction(decode);
-	    } catch (IllegalArgumentException e) {
-		// TODO: Ignore invalid actions for now
-		continue;
-	    }
-	    if (flowEntryAction != null)
-		actions.add(flowEntryAction);
-	}
+        // Split the string, and decode each action
+        String[] parts = decode.split(";");
+        for (int i = 0; i < parts.length; i++) {
+            decode = parts[i];
+            if ((decode == null) || decode.isEmpty())
+                continue;
+            FlowEntryAction flowEntryAction = null;
+            try {
+                flowEntryAction = new FlowEntryAction(decode);
+            } catch (IllegalArgumentException e) {
+                // TODO: Ignore invalid actions for now
+                continue;
+            }
+            if (flowEntryAction != null)
+                actions.add(flowEntryAction);
+        }
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntryErrorState.java b/src/main/java/net/onrc/onos/core/util/FlowEntryErrorState.java
index e1c5731..fa12055 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryErrorState.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryErrorState.java
@@ -6,15 +6,15 @@
  * The class representing the Flow Entry error state.
  */
 public class FlowEntryErrorState {
-    private short type;	// The error type (e.g., see OF-1.3.1 spec, pp. 95)
-    private short code;	// The error code (e.g., see OF-1.3.1 spec, pp. 95)
+    private short type;    // The error type (e.g., see OF-1.3.1 spec, pp. 95)
+    private short code;    // The error code (e.g., see OF-1.3.1 spec, pp. 95)
 
     /**
      * Default constructor.
      */
     public FlowEntryErrorState() {
-	this.type = 0;
-	this.code = 0;
+        this.type = 0;
+        this.code = 0;
     }
 
     /**
@@ -24,8 +24,8 @@
      * @param code the error code to use.
      */
     public FlowEntryErrorState(short type, short code) {
-	this.type = type;
-	this.code = code;
+        this.type = type;
+        this.code = code;
     }
 
     /**
@@ -34,7 +34,9 @@
      * @return the error type.
      */
     @JsonProperty("type")
-    public short type() { return type; }
+    public short type() {
+        return type;
+    }
 
     /**
      * Set the error type.
@@ -43,7 +45,7 @@
      */
     @JsonProperty("type")
     public void setType(short type) {
-	this.type = type;
+        this.type = type;
     }
 
     /**
@@ -52,7 +54,9 @@
      * @return the error code.
      */
     @JsonProperty("code")
-    public short code() { return code; }
+    public short code() {
+        return code;
+    }
 
     /**
      * Set the error code.
@@ -61,7 +65,7 @@
      */
     @JsonProperty("code")
     public void setCode(short code) {
-	this.code = code;
+        this.code = code;
     }
 
     /**
@@ -71,13 +75,13 @@
      * @param code the error code to use.
      */
     public void setValue(short type, short code) {
-	this.type = type;
-	this.code = code;
+        this.type = type;
+        this.code = code;
     }
 
     /**
      * Convert the error type and code to a string.
-     *
+     * <p/>
      * The string has the following form:
      * [type=1 code=2]
      *
@@ -85,7 +89,7 @@
      */
     @Override
     public String toString() {
-	String ret = "[type=" + this.type + " code=" + code + "]";
-	return ret;
+        String ret = "[type=" + this.type + " code=" + code + "]";
+        return ret;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntryId.java b/src/main/java/net/onrc/onos/core/util/FlowEntryId.java
index e4dd32c..373962e 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryId.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryId.java
@@ -12,8 +12,8 @@
 /**
  * The class representing a Flow Entry ID.
  */
-@JsonDeserialize(using=FlowEntryIdDeserializer.class)
-@JsonSerialize(using=FlowEntryIdSerializer.class)
+@JsonDeserialize(using = FlowEntryIdDeserializer.class)
+@JsonSerialize(using = FlowEntryIdSerializer.class)
 public class FlowEntryId {
     private long value;
 
@@ -21,7 +21,7 @@
      * Default constructor.
      */
     public FlowEntryId() {
-	this.value = -1;
+        this.value = -1;
     }
 
     /**
@@ -30,7 +30,7 @@
      * @param value the value to use.
      */
     public FlowEntryId(long value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -39,17 +39,17 @@
      * @param value the value to use.
      */
     public FlowEntryId(String value) {
-	//
-	// Use the help of BigInteger to parse strings representing
-	// large unsigned hex long values.
-	//
-	char c = 0;
-	if (value.length() > 2)
-	    c = value.charAt(1);
-	if ((c == 'x') || (c == 'X'))
-	    this.value = new BigInteger(value.substring(2), 16).longValue();
-	else
-	    this.value = Long.decode(value);
+        //
+        // Use the help of BigInteger to parse strings representing
+        // large unsigned hex long values.
+        //
+        char c = 0;
+        if (value.length() > 2)
+            c = value.charAt(1);
+        if ((c == 'x') || (c == 'X'))
+            this.value = new BigInteger(value.substring(2), 16).longValue();
+        else
+            this.value = Long.decode(value);
     }
 
     /**
@@ -57,7 +57,9 @@
      *
      * @return the value of the Flow Entry ID.
      */
-    public long value() { return value; }
+    public long value() {
+        return value;
+    }
 
     /**
      * Set the value of the Flow Entry ID.
@@ -65,7 +67,7 @@
      * @param value the value to set.
      */
     public void setValue(long value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -75,30 +77,30 @@
      */
     @JsonIgnore
     public boolean isValid() {
-	return (this.value() != -1);
+        return (this.value() != -1);
     }
 
     /**
-     * Returns true of the object is another Flow Entry ID with 
+     * Returns true of the object is another Flow Entry ID with
      * the same value; otherwise, returns false.
-     * 
+     *
      * @param Object to compare
      */
     @Override
-    public boolean equals(Object obj){
-	if(obj != null && obj.getClass() == this.getClass()) {
-	    FlowEntryId entry = (FlowEntryId) obj;
-	    return this.value() == entry.value();
-	}
-	return false;
+    public boolean equals(Object obj) {
+        if (obj != null && obj.getClass() == this.getClass()) {
+            FlowEntryId entry = (FlowEntryId) obj;
+            return this.value() == entry.value();
+        }
+        return false;
     }
-    
+
     /**
      * Return the hash code of the Flow Entry ID
      */
     @Override
     public int hashCode() {
-	return Long.valueOf(value).hashCode();
+        return Long.valueOf(value).hashCode();
     }
 
     /**
@@ -108,6 +110,6 @@
      */
     @Override
     public String toString() {
-	return "0x" + Long.toHexString(this.value);
+        return "0x" + Long.toHexString(this.value);
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntryMatch.java b/src/main/java/net/onrc/onos/core/util/FlowEntryMatch.java
index cc18071..ce6a202 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryMatch.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryMatch.java
@@ -6,7 +6,7 @@
 
 /**
  * The class representing the Flow Entry Matching filter.
- *
+ * <p/>
  * The Flow Entry matching filter that is used to specify
  * the network data that would be forwarded on the data path from
  * the source to the destination. Examples: source or destination MAC address,
@@ -17,70 +17,74 @@
      * A class for storing a value to match.
      */
     public static class Field<T> {
-	/**
-	 * Default constructor.
-	 */
-	public Field() {
-	    this.enabled = false;
-	}
+        /**
+         * Default constructor.
+         */
+        public Field() {
+            this.enabled = false;
+        }
 
-	/**
-	 * Constructor for a given value to match.
-	 *
-	 * @param value the value to match.
-	 */
-	public Field(T value) {
-	    this.value = value;
-	    this.enabled = true;
-	}
+        /**
+         * Constructor for a given value to match.
+         *
+         * @param value the value to match.
+         */
+        public Field(T value) {
+            this.value = value;
+            this.enabled = true;
+        }
 
-	/**
-	 * Get the value.
-	 *
-	 * @return the value.
-	 */
-	public T value() { return this.value; }
+        /**
+         * Get the value.
+         *
+         * @return the value.
+         */
+        public T value() {
+            return this.value;
+        }
 
-	/**
-	 * Enable the matching for a given value.
-	 *
-	 * @param value the value to set.
-	 */
-	public void enableMatch(T value) {
-	    this.value = value;
-	    this.enabled = true;
-	}
+        /**
+         * Enable the matching for a given value.
+         *
+         * @param value the value to set.
+         */
+        public void enableMatch(T value) {
+            this.value = value;
+            this.enabled = true;
+        }
 
-	/**
-	 * Disable the matching.
-	 */
-	public void disableMatch() {
-	    this.enabled = false;
-	}
+        /**
+         * Disable the matching.
+         */
+        public void disableMatch() {
+            this.enabled = false;
+        }
 
-	/**
-	 * Test whether matching is enabled.
-	 *
-	 * @return true if matching is enabled, otherwise false.
-	 */
-	public boolean enabled() { return this.enabled; }
+        /**
+         * Test whether matching is enabled.
+         *
+         * @return true if matching is enabled, otherwise false.
+         */
+        public boolean enabled() {
+            return this.enabled;
+        }
 
-	private T value;		// The value to match
-	private boolean enabled;	// Set to true, if matching is enabled
+        private T value;        // The value to match
+        private boolean enabled;    // Set to true, if matching is enabled
     }
 
-    private Field<Port> inPort;		// Matching input switch port
-    private Field<MACAddress> srcMac;	// Matching source MAC address
-    private Field<MACAddress> dstMac;	// Matching destination MAC address
+    private Field<Port> inPort;        // Matching input switch port
+    private Field<MACAddress> srcMac;    // Matching source MAC address
+    private Field<MACAddress> dstMac;    // Matching destination MAC address
     private Field<Short> ethernetFrameType; // Matching Ethernet frame type
-    private Field<Short> vlanId;	// Matching VLAN ID
-    private Field<Byte> vlanPriority;	// Matching VLAN priority
-    private Field<IPv4Net> srcIPv4Net;	// Matching source IPv4 prefix
-    private Field<IPv4Net> dstIPv4Net;	// Matching destination IPv4 prefix
-    private Field<Byte> ipProto;	// Matching IP protocol
-    private Field<Byte> ipToS;		// Matching IP ToS (DSCP field, 6 bits)
-    private Field<Short> srcTcpUdpPort;	// Matching source TCP/UDP port
-    private Field<Short> dstTcpUdpPort;	// Matching destination TCP/UDP port
+    private Field<Short> vlanId;    // Matching VLAN ID
+    private Field<Byte> vlanPriority;    // Matching VLAN priority
+    private Field<IPv4Net> srcIPv4Net;    // Matching source IPv4 prefix
+    private Field<IPv4Net> dstIPv4Net;    // Matching destination IPv4 prefix
+    private Field<Byte> ipProto;    // Matching IP protocol
+    private Field<Byte> ipToS;        // Matching IP ToS (DSCP field, 6 bits)
+    private Field<Short> srcTcpUdpPort;    // Matching source TCP/UDP port
+    private Field<Short> dstTcpUdpPort;    // Matching destination TCP/UDP port
 
     /**
      * Default constructor.
@@ -94,30 +98,30 @@
      * @param other the object to copy from.
      */
     public FlowEntryMatch(FlowEntryMatch other) {
-	if ((other.inPort != null) && other.inPort.enabled())
-	    this.enableInPort(other.inPort.value());
-	if ((other.srcMac != null) && other.srcMac.enabled())
-	    this.enableSrcMac(other.srcMac.value());
-	if ((other.dstMac != null) && other.dstMac.enabled())
-	    this.enableDstMac(other.dstMac.value());
-	if ((other.ethernetFrameType != null) && other.ethernetFrameType.enabled())
-	    this.enableEthernetFrameType(other.ethernetFrameType.value());
-	if ((other.vlanId != null) && other.vlanId.enabled())
-	    this.enableVlanId(other.vlanId.value());
-	if ((other.vlanPriority != null) && other.vlanPriority.enabled())
-	    this.enableVlanPriority(other.vlanPriority.value());
-	if ((other.srcIPv4Net != null) && other.srcIPv4Net.enabled())
-	    this.enableSrcIPv4Net(other.srcIPv4Net.value());
-	if ((other.dstIPv4Net != null) && other.dstIPv4Net.enabled())
-	    this.enableDstIPv4Net(other.dstIPv4Net.value());
-	if ((other.ipProto != null) && other.ipProto.enabled())
-	    this.enableIpProto(other.ipProto.value());
-	if ((other.ipToS != null) && other.ipToS.enabled())
-	    this.enableIpToS(other.ipToS.value());
-	if ((other.srcTcpUdpPort != null) && other.srcTcpUdpPort.enabled())
-	    this.enableSrcTcpUdpPort(other.srcTcpUdpPort.value());
-	if ((other.dstTcpUdpPort != null) && other.dstTcpUdpPort.enabled())
-	    this.enableDstTcpUdpPort(other.dstTcpUdpPort.value());
+        if ((other.inPort != null) && other.inPort.enabled())
+            this.enableInPort(other.inPort.value());
+        if ((other.srcMac != null) && other.srcMac.enabled())
+            this.enableSrcMac(other.srcMac.value());
+        if ((other.dstMac != null) && other.dstMac.enabled())
+            this.enableDstMac(other.dstMac.value());
+        if ((other.ethernetFrameType != null) && other.ethernetFrameType.enabled())
+            this.enableEthernetFrameType(other.ethernetFrameType.value());
+        if ((other.vlanId != null) && other.vlanId.enabled())
+            this.enableVlanId(other.vlanId.value());
+        if ((other.vlanPriority != null) && other.vlanPriority.enabled())
+            this.enableVlanPriority(other.vlanPriority.value());
+        if ((other.srcIPv4Net != null) && other.srcIPv4Net.enabled())
+            this.enableSrcIPv4Net(other.srcIPv4Net.value());
+        if ((other.dstIPv4Net != null) && other.dstIPv4Net.enabled())
+            this.enableDstIPv4Net(other.dstIPv4Net.value());
+        if ((other.ipProto != null) && other.ipProto.enabled())
+            this.enableIpProto(other.ipProto.value());
+        if ((other.ipToS != null) && other.ipToS.enabled())
+            this.enableIpToS(other.ipToS.value());
+        if ((other.srcTcpUdpPort != null) && other.srcTcpUdpPort.enabled())
+            this.enableSrcTcpUdpPort(other.srcTcpUdpPort.value());
+        if ((other.dstTcpUdpPort != null) && other.dstTcpUdpPort.enabled())
+            this.enableDstTcpUdpPort(other.dstTcpUdpPort.value());
     }
 
     /**
@@ -127,9 +131,9 @@
      */
     @JsonProperty("inPort")
     public Port inPort() {
-	if (inPort != null)
-	    return inPort.value();
-	return null;
+        if (inPort != null)
+            return inPort.value();
+        return null;
     }
 
     /**
@@ -139,14 +143,14 @@
      */
     @JsonProperty("inPort")
     public void enableInPort(Port inPort) {
-	this.inPort = new Field<Port>(inPort);
+        this.inPort = new Field<Port>(inPort);
     }
 
     /**
      * Disable the matching on input switch port.
      */
     public void disableInPort() {
-	this.inPort = null;
+        this.inPort = null;
     }
 
     /**
@@ -156,9 +160,9 @@
      */
     @JsonProperty("matchInPort")
     public boolean matchInPort() {
-	if (inPort != null)
-	    return inPort.enabled();
-	return false;
+        if (inPort != null)
+            return inPort.enabled();
+        return false;
     }
 
     /**
@@ -168,9 +172,9 @@
      */
     @JsonProperty("srcMac")
     public MACAddress srcMac() {
-	if (srcMac != null)
-	    return srcMac.value();
-	return null;
+        if (srcMac != null)
+            return srcMac.value();
+        return null;
     }
 
     /**
@@ -180,14 +184,14 @@
      */
     @JsonProperty("srcMac")
     public void enableSrcMac(MACAddress srcMac) {
-	this.srcMac = new Field<MACAddress>(srcMac);
+        this.srcMac = new Field<MACAddress>(srcMac);
     }
 
     /**
      * Disable the matching on source MAC address.
      */
     public void disableSrcMac() {
-	this.srcMac = null;
+        this.srcMac = null;
     }
 
     /**
@@ -197,9 +201,9 @@
      */
     @JsonProperty("matchSrcMac")
     public boolean matchSrcMac() {
-	if (srcMac != null)
-	    return srcMac.enabled();
-	return false;
+        if (srcMac != null)
+            return srcMac.enabled();
+        return false;
     }
 
     /**
@@ -209,9 +213,9 @@
      */
     @JsonProperty("dstMac")
     public MACAddress dstMac() {
-	if (dstMac != null)
-	    return dstMac.value();
-	return null;
+        if (dstMac != null)
+            return dstMac.value();
+        return null;
     }
 
     /**
@@ -221,14 +225,14 @@
      */
     @JsonProperty("dstMac")
     public void enableDstMac(MACAddress dstMac) {
-	this.dstMac = new Field<MACAddress>(dstMac);
+        this.dstMac = new Field<MACAddress>(dstMac);
     }
 
     /**
      * Disable the matching on destination MAC address.
      */
     public void disableDstMac() {
-	this.dstMac = null;
+        this.dstMac = null;
     }
 
     /**
@@ -238,9 +242,9 @@
      */
     @JsonProperty("matchDstMac")
     public boolean matchDstMac() {
-	if (dstMac != null)
-	    return dstMac.enabled();
-	return false;
+        if (dstMac != null)
+            return dstMac.enabled();
+        return false;
     }
 
     /**
@@ -250,27 +254,27 @@
      */
     @JsonProperty("ethernetFrameType")
     public Short ethernetFrameType() {
-	if (ethernetFrameType != null)
-	    return ethernetFrameType.value();
-	return null;
+        if (ethernetFrameType != null)
+            return ethernetFrameType.value();
+        return null;
     }
 
     /**
      * Enable the matching on Ethernet frame type.
      *
      * @param ethernetFrameType the Ethernet frame type value to enable for
-     * matching.
+     *                          matching.
      */
     @JsonProperty("ethernetFrameType")
     public void enableEthernetFrameType(Short ethernetFrameType) {
-	this.ethernetFrameType = new Field<Short>(ethernetFrameType);
+        this.ethernetFrameType = new Field<Short>(ethernetFrameType);
     }
 
     /**
      * Disable the matching on Ethernet frame type.
      */
     public void disableEthernetFrameType() {
-	this.ethernetFrameType = null;
+        this.ethernetFrameType = null;
     }
 
     /**
@@ -280,9 +284,9 @@
      */
     @JsonProperty("matchEthernetFrameType")
     public boolean matchEthernetFrameType() {
-	if (ethernetFrameType != null)
-	    return ethernetFrameType.enabled();
-	return false;
+        if (ethernetFrameType != null)
+            return ethernetFrameType.enabled();
+        return false;
     }
 
     /**
@@ -292,9 +296,9 @@
      */
     @JsonProperty("vlanId")
     public Short vlanId() {
-	if (vlanId != null)
-	    return vlanId.value();
-	return null;
+        if (vlanId != null)
+            return vlanId.value();
+        return null;
     }
 
     /**
@@ -304,14 +308,14 @@
      */
     @JsonProperty("vlanId")
     public void enableVlanId(Short vlanId) {
-	this.vlanId = new Field<Short>(vlanId);
+        this.vlanId = new Field<Short>(vlanId);
     }
 
     /**
      * Disable the matching on VLAN ID.
      */
     public void disableVlanId() {
-	this.vlanId = null;
+        this.vlanId = null;
     }
 
     /**
@@ -321,9 +325,9 @@
      */
     @JsonProperty("matchVlanId")
     public boolean matchVlanId() {
-	if (vlanId != null)
-	    return vlanId.enabled();
-	return false;
+        if (vlanId != null)
+            return vlanId.enabled();
+        return false;
     }
 
     /**
@@ -333,9 +337,9 @@
      */
     @JsonProperty("vlanPriority")
     public Byte vlanPriority() {
-	if (vlanPriority != null)
-	    return vlanPriority.value();
-	return null;
+        if (vlanPriority != null)
+            return vlanPriority.value();
+        return null;
     }
 
     /**
@@ -345,14 +349,14 @@
      */
     @JsonProperty("vlanPriority")
     public void enableVlanPriority(Byte vlanPriority) {
-	this.vlanPriority = new Field<Byte>(vlanPriority);
+        this.vlanPriority = new Field<Byte>(vlanPriority);
     }
 
     /**
      * Disable the matching on VLAN priority.
      */
     public void disableVlanPriority() {
-	this.vlanPriority = null;
+        this.vlanPriority = null;
     }
 
     /**
@@ -362,9 +366,9 @@
      */
     @JsonProperty("matchVlanPriority")
     public boolean matchVlanPriority() {
-	if (vlanPriority != null)
-	    return vlanPriority.enabled();
-	return false;
+        if (vlanPriority != null)
+            return vlanPriority.enabled();
+        return false;
     }
 
     /**
@@ -374,9 +378,9 @@
      */
     @JsonProperty("srcIPv4Net")
     public IPv4Net srcIPv4Net() {
-	if (srcIPv4Net != null)
-	    return srcIPv4Net.value();
-	return null;
+        if (srcIPv4Net != null)
+            return srcIPv4Net.value();
+        return null;
     }
 
     /**
@@ -386,14 +390,14 @@
      */
     @JsonProperty("srcIPv4Net")
     public void enableSrcIPv4Net(IPv4Net srcIPv4Net) {
-	this.srcIPv4Net = new Field<IPv4Net>(srcIPv4Net);
+        this.srcIPv4Net = new Field<IPv4Net>(srcIPv4Net);
     }
 
     /**
      * Disable the matching on source IPv4 prefix.
      */
     public void disableSrcIPv4Net() {
-	this.srcIPv4Net = null;
+        this.srcIPv4Net = null;
     }
 
     /**
@@ -403,9 +407,9 @@
      */
     @JsonProperty("matchSrcIPv4Net")
     public boolean matchSrcIPv4Net() {
-	if (srcIPv4Net != null)
-	    return srcIPv4Net.enabled();
-	return false;
+        if (srcIPv4Net != null)
+            return srcIPv4Net.enabled();
+        return false;
     }
 
     /**
@@ -415,27 +419,27 @@
      */
     @JsonProperty("dstIPv4Net")
     public IPv4Net dstIPv4Net() {
-	if (dstIPv4Net != null)
-	    return dstIPv4Net.value();
-	return null;
+        if (dstIPv4Net != null)
+            return dstIPv4Net.value();
+        return null;
     }
 
     /**
      * Enable the matching on destination IPv4 prefix.
      *
      * @param dstIPv4Net the destination IPv4 prefix value to enable for
-     * matching.
+     *                   matching.
      */
     @JsonProperty("dstIPv4Net")
     public void enableDstIPv4Net(IPv4Net dstIPv4Net) {
-	this.dstIPv4Net = new Field<IPv4Net>(dstIPv4Net);
+        this.dstIPv4Net = new Field<IPv4Net>(dstIPv4Net);
     }
 
     /**
      * Disable the matching on destination IPv4 prefix.
      */
     public void disableDstIPv4Net() {
-	this.dstIPv4Net = null;
+        this.dstIPv4Net = null;
     }
 
     /**
@@ -445,9 +449,9 @@
      */
     @JsonProperty("matchDstIPv4Net")
     public boolean matchDstIPv4Net() {
-	if (dstIPv4Net != null)
-	    return dstIPv4Net.enabled();
-	return false;
+        if (dstIPv4Net != null)
+            return dstIPv4Net.enabled();
+        return false;
     }
 
     /**
@@ -457,9 +461,9 @@
      */
     @JsonProperty("ipProto")
     public Byte ipProto() {
-	if (ipProto != null)
-	    return ipProto.value();
-	return null;
+        if (ipProto != null)
+            return ipProto.value();
+        return null;
     }
 
     /**
@@ -469,14 +473,14 @@
      */
     @JsonProperty("ipProto")
     public void enableIpProto(Byte ipProto) {
-	this.ipProto = new Field<Byte>(ipProto);
+        this.ipProto = new Field<Byte>(ipProto);
     }
 
     /**
      * Disable the matching on IP protocol.
      */
     public void disableIpProto() {
-	this.ipProto = null;
+        this.ipProto = null;
     }
 
     /**
@@ -486,9 +490,9 @@
      */
     @JsonProperty("matchIpProto")
     public boolean matchIpProto() {
-	if (ipProto != null)
-	    return ipProto.enabled();
-	return false;
+        if (ipProto != null)
+            return ipProto.enabled();
+        return false;
     }
 
     /**
@@ -498,9 +502,9 @@
      */
     @JsonProperty("ipToS")
     public Byte ipToS() {
-	if (ipToS != null)
-	    return ipToS.value();
-	return null;
+        if (ipToS != null)
+            return ipToS.value();
+        return null;
     }
 
     /**
@@ -510,14 +514,14 @@
      */
     @JsonProperty("ipToS")
     public void enableIpToS(Byte ipToS) {
-	this.ipToS = new Field<Byte>(ipToS);
+        this.ipToS = new Field<Byte>(ipToS);
     }
 
     /**
      * Disable the matching on IP ToS (DSCP field, 6 bits).
      */
     public void disableIpToS() {
-	this.ipToS = null;
+        this.ipToS = null;
     }
 
     /**
@@ -527,9 +531,9 @@
      */
     @JsonProperty("matchIpToS")
     public boolean matchIpToS() {
-	if (ipToS != null)
-	    return ipToS.enabled();
-	return false;
+        if (ipToS != null)
+            return ipToS.enabled();
+        return false;
     }
 
     /**
@@ -539,9 +543,9 @@
      */
     @JsonProperty("srcTcpUdpPort")
     public Short srcTcpUdpPort() {
-	if (srcTcpUdpPort != null)
-	    return srcTcpUdpPort.value();
-	return null;
+        if (srcTcpUdpPort != null)
+            return srcTcpUdpPort.value();
+        return null;
     }
 
     /**
@@ -551,14 +555,14 @@
      */
     @JsonProperty("srcTcpUdpPort")
     public void enableSrcTcpUdpPort(Short srcTcpUdpPort) {
-	this.srcTcpUdpPort = new Field<Short>(srcTcpUdpPort);
+        this.srcTcpUdpPort = new Field<Short>(srcTcpUdpPort);
     }
 
     /**
      * Disable the matching on source TCP/UDP port.
      */
     public void disableSrcTcpUdpPort() {
-	this.srcTcpUdpPort = null;
+        this.srcTcpUdpPort = null;
     }
 
     /**
@@ -568,9 +572,9 @@
      */
     @JsonProperty("matchSrcTcpUdpPort")
     public boolean matchSrcTcpUdpPort() {
-	if (srcTcpUdpPort != null)
-	    return srcTcpUdpPort.enabled();
-	return false;
+        if (srcTcpUdpPort != null)
+            return srcTcpUdpPort.enabled();
+        return false;
     }
 
     /**
@@ -580,27 +584,27 @@
      */
     @JsonProperty("dstTcpUdpPort")
     public Short dstTcpUdpPort() {
-	if (dstTcpUdpPort != null)
-	    return dstTcpUdpPort.value();
-	return null;
+        if (dstTcpUdpPort != null)
+            return dstTcpUdpPort.value();
+        return null;
     }
 
     /**
      * Enable the matching on destination TCP/UDP port.
      *
      * @param dstTcpUdpPort the destination TCP/UDP port to enable for
-     * matching.
+     *                      matching.
      */
     @JsonProperty("dstTcpUdpPort")
     public void enableDstTcpUdpPort(Short dstTcpUdpPort) {
-	this.dstTcpUdpPort = new Field<Short>(dstTcpUdpPort);
+        this.dstTcpUdpPort = new Field<Short>(dstTcpUdpPort);
     }
 
     /**
      * Disable the matching on destination TCP/UDP port.
      */
     public void disableDstTcpUdpPort() {
-	this.dstTcpUdpPort = null;
+        this.dstTcpUdpPort = null;
     }
 
     /**
@@ -610,102 +614,102 @@
      */
     @JsonProperty("matchDstTcpUdpPort")
     public boolean matchDstTcpUdpPort() {
-	if (dstTcpUdpPort != null)
-	    return dstTcpUdpPort.enabled();
-	return false;
+        if (dstTcpUdpPort != null)
+            return dstTcpUdpPort.enabled();
+        return false;
     }
 
     /**
      * Convert the matching filter to a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  [srcMac=XXX dstMac=XXX srcIPv4Net=XXX dstIPv4Net=XXX]
+     * [srcMac=XXX dstMac=XXX srcIPv4Net=XXX dstIPv4Net=XXX]
      *
      * @return the matching filter as a string.
      */
     @Override
     public String toString() {
-	String ret = "[";
-	boolean addSpace = false;
+        String ret = "[";
+        boolean addSpace = false;
 
-	//
-	// Conditionally add only those matching fields that are enabled
-	//
-	if (matchInPort()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "inPort=" + this.inPort().toString();
-	}
-	if (matchSrcMac()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "srcMac=" + this.srcMac().toString();
-	}
-	if (matchDstMac()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "dstMac=" + this.dstMac().toString();
-	}
-	if (matchEthernetFrameType()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "ethernetFrameType=" + this.ethernetFrameType().toString();
-	}
-	if (matchVlanId()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "vlanId=" + this.vlanId().toString();
-	}
-	if (matchVlanPriority()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "vlanPriority=" + this.vlanPriority().toString();
-	}
-	if (matchSrcIPv4Net()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "srcIPv4Net=" + this.srcIPv4Net().toString();
-	}
-	if (matchDstIPv4Net()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "dstIPv4Net=" + this.dstIPv4Net().toString();
-	}
-	if (matchIpProto()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "ipProto=" + this.ipProto().toString();
-	}
-	if (matchIpToS()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "ipToS=" + this.ipToS().toString();
-	}
-	if (matchSrcTcpUdpPort()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "srcTcpUdpPort=" + this.srcTcpUdpPort().toString();
-	}
-	if (matchDstTcpUdpPort()) {
-	    if (addSpace)
-		ret += " ";
-	    addSpace = true;
-	    ret += "dstTcpUdpPort=" + this.dstTcpUdpPort().toString();
-	}
+        //
+        // Conditionally add only those matching fields that are enabled
+        //
+        if (matchInPort()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "inPort=" + this.inPort().toString();
+        }
+        if (matchSrcMac()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "srcMac=" + this.srcMac().toString();
+        }
+        if (matchDstMac()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "dstMac=" + this.dstMac().toString();
+        }
+        if (matchEthernetFrameType()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "ethernetFrameType=" + this.ethernetFrameType().toString();
+        }
+        if (matchVlanId()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "vlanId=" + this.vlanId().toString();
+        }
+        if (matchVlanPriority()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "vlanPriority=" + this.vlanPriority().toString();
+        }
+        if (matchSrcIPv4Net()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "srcIPv4Net=" + this.srcIPv4Net().toString();
+        }
+        if (matchDstIPv4Net()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "dstIPv4Net=" + this.dstIPv4Net().toString();
+        }
+        if (matchIpProto()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "ipProto=" + this.ipProto().toString();
+        }
+        if (matchIpToS()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "ipToS=" + this.ipToS().toString();
+        }
+        if (matchSrcTcpUdpPort()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "srcTcpUdpPort=" + this.srcTcpUdpPort().toString();
+        }
+        if (matchDstTcpUdpPort()) {
+            if (addSpace)
+                ret += " ";
+            addSpace = true;
+            ret += "dstTcpUdpPort=" + this.dstTcpUdpPort().toString();
+        }
 
-	ret += "]";
+        ret += "]";
 
-	return ret;
+        return ret;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntrySwitchState.java b/src/main/java/net/onrc/onos/core/util/FlowEntrySwitchState.java
index c5a79de..754755a 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntrySwitchState.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntrySwitchState.java
@@ -4,9 +4,9 @@
  * The Flow Entry state as set by the controller.
  */
 public enum FlowEntrySwitchState {
-    FE_SWITCH_UNKNOWN,			// Initialization value: state unknown
-    FE_SWITCH_NOT_UPDATED,		// Switch not updated with this entry
-    FE_SWITCH_UPDATE_IN_PROGRESS,	// Switch update in progress
-    FE_SWITCH_UPDATED,			// Switch updated with this entry
-    FE_SWITCH_UPDATE_FAILED	// Error updating the switch with this entry
+    FE_SWITCH_UNKNOWN,            // Initialization value: state unknown
+    FE_SWITCH_NOT_UPDATED,        // Switch not updated with this entry
+    FE_SWITCH_UPDATE_IN_PROGRESS,    // Switch update in progress
+    FE_SWITCH_UPDATED,            // Switch updated with this entry
+    FE_SWITCH_UPDATE_FAILED    // Error updating the switch with this entry
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowEntryUserState.java b/src/main/java/net/onrc/onos/core/util/FlowEntryUserState.java
index 64d283a..8cad5d0 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowEntryUserState.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowEntryUserState.java
@@ -4,8 +4,8 @@
  * The Flow Entry state as set by the user (via the ONOS API).
  */
 public enum FlowEntryUserState {
-    FE_USER_UNKNOWN,			// Initialization value: state unknown
-    FE_USER_ADD,			// Flow entry that is added
-    FE_USER_MODIFY,			// Flow entry that is modified
-    FE_USER_DELETE			// Flow entry that is deleted
+    FE_USER_UNKNOWN,            // Initialization value: state unknown
+    FE_USER_ADD,            // Flow entry that is added
+    FE_USER_MODIFY,            // Flow entry that is modified
+    FE_USER_DELETE            // Flow entry that is deleted
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowId.java b/src/main/java/net/onrc/onos/core/util/FlowId.java
index a6ceed8..c5ee39d 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowId.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowId.java
@@ -12,8 +12,8 @@
 /**
  * The class representing a Flow ID.
  */
-@JsonDeserialize(using=FlowIdDeserializer.class)
-@JsonSerialize(using=FlowIdSerializer.class)
+@JsonDeserialize(using = FlowIdDeserializer.class)
+@JsonSerialize(using = FlowIdSerializer.class)
 public class FlowId implements Comparable<FlowId> {
     private long value;
 
@@ -21,7 +21,7 @@
      * Default constructor.
      */
     public FlowId() {
-	this.value = -1;
+        this.value = -1;
     }
 
     /**
@@ -30,7 +30,7 @@
      * @param value the value to use.
      */
     public FlowId(long value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -39,17 +39,17 @@
      * @param value the value to use.
      */
     public FlowId(String value) {
-	//
-	// Use the help of BigInteger to parse strings representing
-	// large unsigned hex long values.
-	//
-	char c = 0;
-	if (value.length() > 2)
-	    c = value.charAt(1);
-	if ((c == 'x') || (c == 'X'))
-	    this.value = new BigInteger(value.substring(2), 16).longValue();
-	else
-	    this.value = Long.decode(value);
+        //
+        // Use the help of BigInteger to parse strings representing
+        // large unsigned hex long values.
+        //
+        char c = 0;
+        if (value.length() > 2)
+            c = value.charAt(1);
+        if ((c == 'x') || (c == 'X'))
+            this.value = new BigInteger(value.substring(2), 16).longValue();
+        else
+            this.value = Long.decode(value);
     }
 
     /**
@@ -57,7 +57,9 @@
      *
      * @return the value of the Flow ID.
      */
-    public long value() { return value; }
+    public long value() {
+        return value;
+    }
 
     /**
      * Set the value of the Flow ID.
@@ -65,7 +67,7 @@
      * @param value the value to set.
      */
     public void setValue(long value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -75,7 +77,7 @@
      */
     @JsonIgnore
     public boolean isValid() {
-	return (this.value() != -1);
+        return (this.value() != -1);
     }
 
     /**
@@ -85,18 +87,18 @@
      */
     @Override
     public String toString() {
-	return "0x" + Long.toHexString(this.value);
+        return "0x" + Long.toHexString(this.value);
     }
 
     /**
      * Compare two FlowId objects numerically using their Flow IDs.
      *
      * @return the value 0 if the Flow ID is equal to the argument's Flow ID;
-     *         a value less than 0 if the Flow ID is numerically less than the argument's Flow ID;
-     *         and a value greater than 0 if the Flow ID is numerically greater than the argument's Flow ID.
+     * a value less than 0 if the Flow ID is numerically less than the argument's Flow ID;
+     * and a value greater than 0 if the Flow ID is numerically greater than the argument's Flow ID.
      */
- 	@Override
-	public int compareTo(FlowId o) {
-		return Long.valueOf(this.value).compareTo(o.value());
-	}
+    @Override
+    public int compareTo(FlowId o) {
+        return Long.valueOf(this.value).compareTo(o.value());
+    }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowPath.java b/src/main/java/net/onrc/onos/core/util/FlowPath.java
index 2bb5ad3..fe51f08 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowPath.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowPath.java
@@ -9,32 +9,32 @@
  * The class representing the Flow Path.
  */
 public class FlowPath implements Comparable<FlowPath> {
-    public static final int PRIORITY_DEFAULT = 32768;	// Default Flow Priority
+    public static final int PRIORITY_DEFAULT = 32768;    // Default Flow Priority
 
-    private FlowId flowId;		// The Flow ID
-    private CallerId installerId;	// The Caller ID of the path installer
-    private FlowPathType flowPathType;	// The Flow Path type
+    private FlowId flowId;        // The Flow ID
+    private CallerId installerId;    // The Caller ID of the path installer
+    private FlowPathType flowPathType;    // The Flow Path type
     private FlowPathUserState flowPathUserState; // The Flow Path User state
     private FlowPathFlags flowPathFlags; // The Flow Path flags
-    private int		idleTimeout;	// The Flow idle timeout
-    private int		hardTimeout;	// The Flow hard timeout
-    private int		priority;	// The Flow priority
-    private DataPath	dataPath;	// The data path
+    private int idleTimeout;    // The Flow idle timeout
+    private int hardTimeout;    // The Flow hard timeout
+    private int priority;    // The Flow priority
+    private DataPath dataPath;    // The data path
     private FlowEntryMatch flowEntryMatch; // Common Flow Entry Match for all
-					// Flow Entries
+    // Flow Entries
     private FlowEntryActions flowEntryActions; // The Flow Entry Actions for
-					// the first Flow Entry
+    // the first Flow Entry
 
     /**
      * Default constructor.
      */
     public FlowPath() {
-	flowPathType = FlowPathType.FP_TYPE_UNKNOWN;
-	flowPathUserState = FlowPathUserState.FP_USER_UNKNOWN;
-	flowPathFlags = new FlowPathFlags();
-	priority = FlowPath.PRIORITY_DEFAULT;
-	dataPath = new DataPath();
-	flowEntryActions = new FlowEntryActions();
+        flowPathType = FlowPathType.FP_TYPE_UNKNOWN;
+        flowPathUserState = FlowPathUserState.FP_USER_UNKNOWN;
+        flowPathFlags = new FlowPathFlags();
+        priority = FlowPath.PRIORITY_DEFAULT;
+        dataPath = new DataPath();
+        flowEntryActions = new FlowEntryActions();
     }
 
     /**
@@ -43,7 +43,9 @@
      * @return the flow path Flow ID.
      */
     @JsonProperty("flowId")
-    public FlowId flowId() { return flowId; }
+    public FlowId flowId() {
+        return flowId;
+    }
 
     /**
      * Set the flow path Flow ID.
@@ -52,7 +54,7 @@
      */
     @JsonProperty("flowId")
     public void setFlowId(FlowId flowId) {
-	this.flowId = flowId;
+        this.flowId = flowId;
     }
 
     /**
@@ -62,9 +64,9 @@
      */
     @JsonIgnore
     public boolean isValidFlowId() {
-	if (this.flowId == null)
-	    return false;
-	return (this.flowId.isValid());
+        if (this.flowId == null)
+            return false;
+        return (this.flowId.isValid());
     }
 
     /**
@@ -73,7 +75,9 @@
      * @return the Caller ID of the flow path installer.
      */
     @JsonProperty("installerId")
-    public CallerId installerId() { return installerId; }
+    public CallerId installerId() {
+        return installerId;
+    }
 
     /**
      * Set the Caller ID of the flow path installer.
@@ -82,7 +86,7 @@
      */
     @JsonProperty("installerId")
     public void setInstallerId(CallerId installerId) {
-	this.installerId = installerId;
+        this.installerId = installerId;
     }
 
     /**
@@ -91,7 +95,9 @@
      * @return the flow path type.
      */
     @JsonProperty("flowPathType")
-    public FlowPathType flowPathType() { return flowPathType; }
+    public FlowPathType flowPathType() {
+        return flowPathType;
+    }
 
     /**
      * Set the flow path type.
@@ -100,7 +106,7 @@
      */
     @JsonProperty("flowPathType")
     public void setFlowPathType(FlowPathType flowPathType) {
-	this.flowPathType = flowPathType;
+        this.flowPathType = flowPathType;
     }
 
     /**
@@ -109,7 +115,9 @@
      * @return the flow path user state.
      */
     @JsonProperty("flowPathUserState")
-    public FlowPathUserState flowPathUserState() { return flowPathUserState; }
+    public FlowPathUserState flowPathUserState() {
+        return flowPathUserState;
+    }
 
     /**
      * Set the flow path user state.
@@ -118,7 +126,7 @@
      */
     @JsonProperty("flowPathUserState")
     public void setFlowPathUserState(FlowPathUserState flowPathUserState) {
-	this.flowPathUserState = flowPathUserState;
+        this.flowPathUserState = flowPathUserState;
     }
 
     /**
@@ -127,7 +135,9 @@
      * @return the flow path flags.
      */
     @JsonProperty("flowPathFlags")
-    public FlowPathFlags flowPathFlags() { return flowPathFlags; }
+    public FlowPathFlags flowPathFlags() {
+        return flowPathFlags;
+    }
 
     /**
      * Set the flow path flags.
@@ -136,23 +146,25 @@
      */
     @JsonProperty("flowPathFlags")
     public void setFlowPathFlags(FlowPathFlags flowPathFlags) {
-	this.flowPathFlags = flowPathFlags;
+        this.flowPathFlags = flowPathFlags;
     }
 
     /**
      * Get the flow idle timeout in seconds.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      * If zero, the timeout is not set.
      *
      * @return the flow idle timeout.
      */
     @JsonProperty("idleTimeout")
-    public int idleTimeout() { return idleTimeout; }
+    public int idleTimeout() {
+        return idleTimeout;
+    }
 
     /**
      * Set the flow idle timeout in seconds.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      * If zero, the timeout is not set.
      *
@@ -160,23 +172,25 @@
      */
     @JsonProperty("idleTimeout")
     public void setIdleTimeout(int idleTimeout) {
-	this.idleTimeout = 0xffff & idleTimeout;
+        this.idleTimeout = 0xffff & idleTimeout;
     }
 
     /**
      * Get the flow hard timeout in seconds.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      * If zero, the timeout is not set.
      *
      * @return the flow hard timeout.
      */
     @JsonProperty("hardTimeout")
-    public int hardTimeout() { return hardTimeout; }
+    public int hardTimeout() {
+        return hardTimeout;
+    }
 
     /**
      * Set the flow hard timeout.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      * If zero, the timeout is not set.
      *
@@ -184,29 +198,31 @@
      */
     @JsonProperty("hardTimeout")
     public void setHardTimeout(int hardTimeout) {
-	this.hardTimeout = 0xffff & hardTimeout;
+        this.hardTimeout = 0xffff & hardTimeout;
     }
 
     /**
      * Get the flow priority.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      *
      * @return the flow priority.
      */
     @JsonProperty("priority")
-    public int priority() { return priority; }
+    public int priority() {
+        return priority;
+    }
 
     /**
      * Set the flow priority.
-     *
+     * <p/>
      * It should be an unsigned integer in the interval [0, 65535].
      *
      * @param priority the flow priority to set.
      */
     @JsonProperty("priority")
     public void setPriority(int priority) {
-	this.priority = 0xffff & priority;
+        this.priority = 0xffff & priority;
     }
 
     /**
@@ -215,7 +231,9 @@
      * @return the flow path's data path.
      */
     @JsonProperty("dataPath")
-    public DataPath dataPath() { return dataPath; }
+    public DataPath dataPath() {
+        return dataPath;
+    }
 
     /**
      * Set the flow path's data path.
@@ -224,7 +242,7 @@
      */
     @JsonProperty("dataPath")
     public void setDataPath(DataPath dataPath) {
-	this.dataPath = dataPath;
+        this.dataPath = dataPath;
     }
 
     /**
@@ -233,7 +251,7 @@
      * @return the data path flow entries.
      */
     public ArrayList<FlowEntry> flowEntries() {
-	return this.dataPath.flowEntries();
+        return this.dataPath.flowEntries();
     }
 
     /**
@@ -242,17 +260,19 @@
      * @return the flow path's match conditions common for all Flow Entries.
      */
     @JsonProperty("flowEntryMatch")
-    public FlowEntryMatch flowEntryMatch() { return flowEntryMatch; }
+    public FlowEntryMatch flowEntryMatch() {
+        return flowEntryMatch;
+    }
 
     /**
      * Set the flow path's match conditions common for all Flow Entries.
      *
      * @param flowEntryMatch the flow path's match conditions common for all
-     * Flow Entries.
+     *                       Flow Entries.
      */
     @JsonProperty("flowEntryMatch")
     public void setFlowEntryMatch(FlowEntryMatch flowEntryMatch) {
-	this.flowEntryMatch = flowEntryMatch;
+        this.flowEntryMatch = flowEntryMatch;
     }
 
     /**
@@ -262,55 +282,55 @@
      */
     @JsonProperty("flowEntryActions")
     public FlowEntryActions flowEntryActions() {
-	return flowEntryActions;
+        return flowEntryActions;
     }
 
     /**
      * Set the flow path's flow entry actions for the first Flow Entry.
      *
      * @param flowEntryActions the flow path's flow entry actions for the first
-     * Flow Entry.
+     *                         Flow Entry.
      */
     @JsonProperty("flowEntryActions")
     public void setFlowEntryActions(FlowEntryActions flowEntryActions) {
-	this.flowEntryActions = flowEntryActions;
+        this.flowEntryActions = flowEntryActions;
     }
 
     /**
      * Convert the flow path to a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  [flowId=XXX installerId=XXX flowPathType = XXX flowPathUserState = XXX
-     *   flowPathFlags=XXX idleTimeout=XXX hardTimeout=XXX priority=XXX
-     *   dataPath=XXX flowEntryMatch=XXX flowEntryActions=XXX]
+     * [flowId=XXX installerId=XXX flowPathType = XXX flowPathUserState = XXX
+     * flowPathFlags=XXX idleTimeout=XXX hardTimeout=XXX priority=XXX
+     * dataPath=XXX flowEntryMatch=XXX flowEntryActions=XXX]
      *
      * @return the flow path as a string.
      */
     @Override
     public String toString() {
-	String ret = "[flowId=" + this.flowId.toString();
-	ret += " installerId=" + this.installerId.toString();
-	ret += " flowPathType=" + this.flowPathType;
-	ret += " flowPathUserState=" + this.flowPathUserState;
-	ret += " flowPathFlags=" + this.flowPathFlags.toString();
-	ret += " idleTimeout=" + this.idleTimeout;
-	ret += " hardTimeout=" + this.hardTimeout;
-	ret += " priority=" + this.priority;
-	if (dataPath != null)
-	    ret += " dataPath=" + this.dataPath.toString();
-	if (flowEntryMatch != null)
-	    ret += " flowEntryMatch=" + this.flowEntryMatch.toString();
-	if (flowEntryActions != null)
-	    ret += " flowEntryActions=" + this.flowEntryActions.toString();
-	ret += "]";
-	return ret;
+        String ret = "[flowId=" + this.flowId.toString();
+        ret += " installerId=" + this.installerId.toString();
+        ret += " flowPathType=" + this.flowPathType;
+        ret += " flowPathUserState=" + this.flowPathUserState;
+        ret += " flowPathFlags=" + this.flowPathFlags.toString();
+        ret += " idleTimeout=" + this.idleTimeout;
+        ret += " hardTimeout=" + this.hardTimeout;
+        ret += " priority=" + this.priority;
+        if (dataPath != null)
+            ret += " dataPath=" + this.dataPath.toString();
+        if (flowEntryMatch != null)
+            ret += " flowEntryMatch=" + this.flowEntryMatch.toString();
+        if (flowEntryActions != null)
+            ret += " flowEntryActions=" + this.flowEntryActions.toString();
+        ret += "]";
+        return ret;
     }
-    
+
     /**
      * CompareTo method to order flowPath by Id
      */
     @Override
     public int compareTo(FlowPath f) {
-    	return (int) (this.flowId.value() - f.flowId.value());
+        return (int) (this.flowId.value() - f.flowId.value());
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowPathFlags.java b/src/main/java/net/onrc/onos/core/util/FlowPathFlags.java
index b52d888..e1e67c5 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowPathFlags.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowPathFlags.java
@@ -9,7 +9,7 @@
     private long flags;
 
     // Discard the first-hop Flow Entry
-    public static final long DISCARD_FIRST_HOP_ENTRY   = (1 << 0);
+    public static final long DISCARD_FIRST_HOP_ENTRY = (1 << 0);
 
     // Keep only the first-hop Flow Entry
     public static final long KEEP_ONLY_FIRST_HOP_ENTRY = (1 << 1);
@@ -18,7 +18,7 @@
      * Default constructor.
      */
     public FlowPathFlags() {
-	this.flags = 0;
+        this.flags = 0;
     }
 
     /**
@@ -27,18 +27,19 @@
      * @param flags the flags value to set.
      */
     public FlowPathFlags(long flags) {
-	this.flags = flags;
+        this.flags = flags;
     }
 
     /**
      * Constructor for given flags as a string.
-     *
+     * <p/>
      * The string value should contain the name of each flags to set. E.g.:
-     *  "DISCARD_FIRST_HOP_ENTRY,KEEP_ONLY_FIRST_HOP_ENTRY"
+     * "DISCARD_FIRST_HOP_ENTRY,KEEP_ONLY_FIRST_HOP_ENTRY"
+     *
      * @param flagsStr the string value of the flags to set.
      */
     public FlowPathFlags(String flagsStr) {
-	this.setFlagsStr(flagsStr);
+        this.setFlagsStr(flagsStr);
     }
 
     /**
@@ -47,7 +48,9 @@
      * @return the flags.
      */
     @JsonProperty("flags")
-    public long flags() { return flags; }
+    public long flags() {
+        return flags;
+    }
 
     /**
      * Set the flags.
@@ -56,25 +59,26 @@
      */
     @JsonProperty("flags")
     public void setFlags(long flags) {
-	this.flags = flags;
+        this.flags = flags;
     }
 
     /**
      * Set the flags as a string.
-     *
+     * <p/>
      * The string value should contain the name of each flags to set. E.g.:
-     *  "DISCARD_FIRST_HOP_ENTRY,KEEP_ONLY_FIRST_HOP_ENTRY"
+     * "DISCARD_FIRST_HOP_ENTRY,KEEP_ONLY_FIRST_HOP_ENTRY"
+     *
      * @param flagsStr the string value of the flags to set.
      */
     @JsonProperty("flagsStr")
     public void setFlagsStr(String flagsStr) {
-	this.flags = 0L;
+        this.flags = 0L;
 
-	// Test all flags
-	if (flagsStr.contains("DISCARD_FIRST_HOP_ENTRY"))
-	    this.flags |= DISCARD_FIRST_HOP_ENTRY;
-	if (flagsStr.contains("KEEP_ONLY_FIRST_HOP_ENTRY"))
-	    this.flags |= KEEP_ONLY_FIRST_HOP_ENTRY;
+        // Test all flags
+        if (flagsStr.contains("DISCARD_FIRST_HOP_ENTRY"))
+            this.flags |= DISCARD_FIRST_HOP_ENTRY;
+        if (flagsStr.contains("KEEP_ONLY_FIRST_HOP_ENTRY"))
+            this.flags |= KEEP_ONLY_FIRST_HOP_ENTRY;
     }
 
     /**
@@ -84,7 +88,7 @@
      * otherwise false.
      */
     public boolean isDiscardFirstHopEntry() {
-	return ((flags & DISCARD_FIRST_HOP_ENTRY) != 0);
+        return ((flags & DISCARD_FIRST_HOP_ENTRY) != 0);
     }
 
     /**
@@ -94,36 +98,36 @@
      * otherwise false.
      */
     public boolean isKeepOnlyFirstHopEntry() {
-	return ((flags & KEEP_ONLY_FIRST_HOP_ENTRY) != 0);
+        return ((flags & KEEP_ONLY_FIRST_HOP_ENTRY) != 0);
     }
 
     /**
      * Convert the Flow Path Flags to a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  [flags=DISCARD_FIRST_HOP_ENTRY,KEEP_ONLY_FIRST_HOP_ENTRY]
+     * [flags=DISCARD_FIRST_HOP_ENTRY,KEEP_ONLY_FIRST_HOP_ENTRY]
      *
      * @return the Flow Path flags as a string.
      */
     @Override
     public String toString() {
-	String flagsStr = null;
-	String ret = "[flags=";
+        String flagsStr = null;
+        String ret = "[flags=";
 
-	// Test all flags
-	if ((this.flags & DISCARD_FIRST_HOP_ENTRY) != 0) {
-	    flagsStr += "DISCARD_FIRST_HOP_ENTRY";
-	}
-	if ((this.flags & KEEP_ONLY_FIRST_HOP_ENTRY) != 0) {
-	    if (flagsStr != null)
-		flagsStr += ",";
-	    flagsStr += "KEEP_ONLY_FIRST_HOP_ENTRY";
-	}
-	if (flagsStr != null)
-	    ret += flagsStr;
-	ret += "]";
+        // Test all flags
+        if ((this.flags & DISCARD_FIRST_HOP_ENTRY) != 0) {
+            flagsStr += "DISCARD_FIRST_HOP_ENTRY";
+        }
+        if ((this.flags & KEEP_ONLY_FIRST_HOP_ENTRY) != 0) {
+            if (flagsStr != null)
+                flagsStr += ",";
+            flagsStr += "KEEP_ONLY_FIRST_HOP_ENTRY";
+        }
+        if (flagsStr != null)
+            ret += flagsStr;
+        ret += "]";
 
-	return ret;
+        return ret;
     }
 
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowPathType.java b/src/main/java/net/onrc/onos/core/util/FlowPathType.java
index 4b1214e..f18938d 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowPathType.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowPathType.java
@@ -4,7 +4,7 @@
  * The Flow Path types.
  */
 public enum FlowPathType {
-    FP_TYPE_UNKNOWN,			// Initialization value: state unknown
-    FP_TYPE_SHORTEST_PATH,		// Shortest path flow
-    FP_TYPE_EXPLICIT_PATH		// Flow path with explicit flow entries
+    FP_TYPE_UNKNOWN,            // Initialization value: state unknown
+    FP_TYPE_SHORTEST_PATH,        // Shortest path flow
+    FP_TYPE_EXPLICIT_PATH        // Flow path with explicit flow entries
 }
diff --git a/src/main/java/net/onrc/onos/core/util/FlowPathUserState.java b/src/main/java/net/onrc/onos/core/util/FlowPathUserState.java
index bc91c2a..4b637d1 100644
--- a/src/main/java/net/onrc/onos/core/util/FlowPathUserState.java
+++ b/src/main/java/net/onrc/onos/core/util/FlowPathUserState.java
@@ -4,8 +4,8 @@
  * The Flow Path state as set by the user (via the ONOS API).
  */
 public enum FlowPathUserState {
-    FP_USER_UNKNOWN,			// Initialization value: state unknown
-    FP_USER_ADD,			// Flow path that is added
-    FP_USER_MODIFY,			// Flow path that is modified
-    FP_USER_DELETE			// Flow path that is deleted
+    FP_USER_UNKNOWN,            // Initialization value: state unknown
+    FP_USER_ADD,            // Flow path that is added
+    FP_USER_MODIFY,            // Flow path that is modified
+    FP_USER_DELETE            // Flow path that is deleted
 }
diff --git a/src/main/java/net/onrc/onos/core/util/IPv4.java b/src/main/java/net/onrc/onos/core/util/IPv4.java
index 86795aa..a7f3d24 100644
--- a/src/main/java/net/onrc/onos/core/util/IPv4.java
+++ b/src/main/java/net/onrc/onos/core/util/IPv4.java
@@ -9,8 +9,8 @@
 /**
  * The class representing an IPv4 address.
  */
-@JsonDeserialize(using=IPv4Deserializer.class)
-@JsonSerialize(using=IPv4Serializer.class)
+@JsonDeserialize(using = IPv4Deserializer.class)
+@JsonSerialize(using = IPv4Serializer.class)
 public class IPv4 {
     private int value;
 
@@ -18,7 +18,7 @@
      * Default constructor.
      */
     public IPv4() {
-	this.value = 0;
+        this.value = 0;
     }
 
     /**
@@ -27,7 +27,7 @@
      * @param other the object to copy from.
      */
     public IPv4(IPv4 other) {
-	this.value = other.value;
+        this.value = other.value;
     }
 
     /**
@@ -36,7 +36,7 @@
      * @param value the value to use.
      */
     public IPv4(int value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -48,13 +48,13 @@
         String[] splits = value.split("\\.");
         if (splits.length != 4)
             throw new IllegalArgumentException("Specified IPv4 address must contain four " +
-					       "numerical digits separated by '.'");
+                    "numerical digits separated by '.'");
 
         int result = 0;
         for (int i = 0; i < 4; ++i) {
-            result |= Integer.valueOf(splits[i]) << ((3-i)*8);
+            result |= Integer.valueOf(splits[i]) << ((3 - i) * 8);
         }
-	this.value = result;
+        this.value = result;
     }
 
     /**
@@ -62,7 +62,9 @@
      *
      * @return the value of the IPv4 address.
      */
-    public int value() { return value; }
+    public int value() {
+        return value;
+    }
 
     /**
      * Set the value of the IPv4 address.
@@ -70,7 +72,7 @@
      * @param value the value to set.
      */
     public void setValue(int value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -80,9 +82,9 @@
      */
     @Override
     public String toString() {
-	return ((this.value >> 24) & 0xFF) + "." +
-	    ((this.value >> 16) & 0xFF) + "." +
-	    ((this.value >> 8) & 0xFF) + "." +
-	    (this.value & 0xFF);
+        return ((this.value >> 24) & 0xFF) + "." +
+                ((this.value >> 16) & 0xFF) + "." +
+                ((this.value >> 8) & 0xFF) + "." +
+                (this.value & 0xFF);
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/IPv4Net.java b/src/main/java/net/onrc/onos/core/util/IPv4Net.java
index 82f2fc6..3aa5a8b 100644
--- a/src/main/java/net/onrc/onos/core/util/IPv4Net.java
+++ b/src/main/java/net/onrc/onos/core/util/IPv4Net.java
@@ -9,17 +9,17 @@
 /**
  * The class representing an IPv4 network address.
  */
-@JsonDeserialize(using=IPv4NetDeserializer.class)
-@JsonSerialize(using=IPv4NetSerializer.class)
+@JsonDeserialize(using = IPv4NetDeserializer.class)
+@JsonSerialize(using = IPv4NetSerializer.class)
 public class IPv4Net {
-    private IPv4 address;		// The IPv4 address
-    private short prefixLen;		// The prefix length
+    private IPv4 address;        // The IPv4 address
+    private short prefixLen;        // The prefix length
 
     /**
      * Default constructor.
      */
     public IPv4Net() {
-	this.prefixLen = 0;
+        this.prefixLen = 0;
     }
 
     /**
@@ -28,20 +28,20 @@
      * @param other the object to copy from.
      */
     public IPv4Net(IPv4Net other) {
-	if (other.address != null)
-	    this.address = new IPv4(other.address);
-	this.prefixLen = other.prefixLen;
+        if (other.address != null)
+            this.address = new IPv4(other.address);
+        this.prefixLen = other.prefixLen;
     }
 
     /**
      * Constructor for a given address and prefix length.
      *
-     * @param address the address to use.
+     * @param address   the address to use.
      * @param prefixLen the prefix length to use.
      */
     public IPv4Net(IPv4 address, short prefixLen) {
-	this.address = address;
-	this.prefixLen = prefixLen;
+        this.address = address;
+        this.prefixLen = prefixLen;
     }
 
     /**
@@ -50,13 +50,13 @@
      * @param value the value to use.
      */
     public IPv4Net(String value) {
-	String[] splits = value.split("/");
-	if (splits.length != 2) {
-	    throw new IllegalArgumentException("Specified IPv4Net address must contain an IPv4 " +
-					       "address and a prefix length separated by '/'");
-	}
-	this.address = new IPv4(splits[0]);
-	this.prefixLen = Short.decode(splits[1]);
+        String[] splits = value.split("/");
+        if (splits.length != 2) {
+            throw new IllegalArgumentException("Specified IPv4Net address must contain an IPv4 " +
+                    "address and a prefix length separated by '/'");
+        }
+        this.address = new IPv4(splits[0]);
+        this.prefixLen = Short.decode(splits[1]);
     }
 
     /**
@@ -64,7 +64,9 @@
      *
      * @return the address value of the IPv4Net address.
      */
-    public IPv4 address() { return address; }
+    public IPv4 address() {
+        return address;
+    }
 
     /**
      * Set the address value of the IPv4Net address.
@@ -72,7 +74,7 @@
      * @param address the address to use.
      */
     public void setAddress(IPv4 address) {
-	this.address = address;
+        this.address = address;
     }
 
     /**
@@ -80,7 +82,9 @@
      *
      * @return the prefix length value of the IPv4Net address.
      */
-    public short prefixLen() { return prefixLen; }
+    public short prefixLen() {
+        return prefixLen;
+    }
 
     /**
      * Set the prefix length value of the IPv4Net address.
@@ -88,18 +92,18 @@
      * @param prefixLen the prefix length to use.
      */
     public void setPrefixLen(short prefixLen) {
-	this.prefixLen = prefixLen;
+        this.prefixLen = prefixLen;
     }
 
     /**
      * Set the value of the IPv4Net address.
      *
-     * @param address the address to use.
+     * @param address   the address to use.
      * @param prefixLen the prefix length to use.
      */
     public void setValue(IPv4 address, short prefixLen) {
-	this.address = address;
-	this.prefixLen = prefixLen;
+        this.address = address;
+        this.prefixLen = prefixLen;
     }
 
     /**
@@ -109,6 +113,6 @@
      */
     @Override
     public String toString() {
-	return this.address.toString() + "/" + this.prefixLen;
+        return this.address.toString() + "/" + this.prefixLen;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/IPv6.java b/src/main/java/net/onrc/onos/core/util/IPv6.java
index 1648723..38a86b5 100644
--- a/src/main/java/net/onrc/onos/core/util/IPv6.java
+++ b/src/main/java/net/onrc/onos/core/util/IPv6.java
@@ -10,18 +10,18 @@
 /**
  * The class representing an IPv6 address.
  */
-@JsonDeserialize(using=IPv6Deserializer.class)
-@JsonSerialize(using=IPv6Serializer.class)
+@JsonDeserialize(using = IPv6Deserializer.class)
+@JsonSerialize(using = IPv6Serializer.class)
 public class IPv6 {
-    private long valueHigh;	// The higher (more significant) 64 bits
-    private long valueLow;	// The lower (less significant) 64 bits
+    private long valueHigh;    // The higher (more significant) 64 bits
+    private long valueLow;    // The lower (less significant) 64 bits
 
     /**
      * Default constructor.
      */
     public IPv6() {
-	this.valueHigh = 0;
-	this.valueLow = 0;
+        this.valueHigh = 0;
+        this.valueLow = 0;
     }
 
     /**
@@ -30,19 +30,19 @@
      * @param other the object to copy from.
      */
     public IPv6(IPv6 other) {
-	this.valueHigh = other.valueHigh;
-	this.valueLow = other.valueLow;
+        this.valueHigh = other.valueHigh;
+        this.valueLow = other.valueLow;
     }
 
     /**
      * Constructor from integer values.
      *
      * @param valueHigh the higher (more significant) 64 bits of the address.
-     * @param valueLow the lower (less significant) 64 bits of the address.
+     * @param valueLow  the lower (less significant) 64 bits of the address.
      */
     public IPv6(long valueHigh, long valueLow) {
-	this.valueHigh = valueHigh;
-	this.valueLow = valueLow;
+        this.valueHigh = valueHigh;
+        this.valueLow = valueLow;
     }
 
     /**
@@ -51,9 +51,9 @@
      * @param value the value to use.
      */
     public IPv6(String value) {
-	// TODO: Implement it!
-	this.valueHigh = 0;
-	this.valueLow = 0;
+        // TODO: Implement it!
+        this.valueHigh = 0;
+        this.valueLow = 0;
     }
 
     /**
@@ -62,7 +62,9 @@
      * @return the value of the higher (more significant) 64 bits of the
      * address.
      */
-    public long valueHigh() { return valueHigh; }
+    public long valueHigh() {
+        return valueHigh;
+    }
 
     /**
      * Set the value of the higher (more significant) 64 bits of the address.
@@ -70,7 +72,7 @@
      * @param valueHigh the higher (more significant) 64 bits of the address.
      */
     public void setValueHigh(long valueHigh) {
-	this.valueHigh = valueHigh;
+        this.valueHigh = valueHigh;
     }
 
     /**
@@ -79,7 +81,9 @@
      * @return the value of the lower (less significant) 64 bits of the
      * address.
      */
-    public long valueLow() { return valueLow; }
+    public long valueLow() {
+        return valueLow;
+    }
 
     /**
      * Get the value of the lower (less significant) 64 bits of the address.
@@ -87,18 +91,18 @@
      * @param valueLow the lower (less significant) 64 bits of the address.
      */
     public void setValueLow(long valueLow) {
-	this.valueLow = valueLow;
+        this.valueLow = valueLow;
     }
 
     /**
      * Set the value of the IPv6 address.
      *
      * @param valueHigh the higher (more significant) 64 bits of the address.
-     * @param valueLow the lower (less significant) 64 bits of the address.
+     * @param valueLow  the lower (less significant) 64 bits of the address.
      */
     public void setValue(long valueHigh, long valueLow) {
-	this.valueHigh = valueHigh;
-	this.valueLow = valueLow;
+        this.valueHigh = valueHigh;
+        this.valueLow = valueLow;
     }
 
     /**
@@ -108,7 +112,7 @@
      */
     @Override
     public String toString() {
-	return HexString.toHexString(this.valueHigh) + ":" +
-	    HexString.toHexString(this.valueLow);
+        return HexString.toHexString(this.valueHigh) + ":" +
+                HexString.toHexString(this.valueLow);
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/IPv6Net.java b/src/main/java/net/onrc/onos/core/util/IPv6Net.java
index 486f8e8..1faa7c5 100644
--- a/src/main/java/net/onrc/onos/core/util/IPv6Net.java
+++ b/src/main/java/net/onrc/onos/core/util/IPv6Net.java
@@ -9,17 +9,17 @@
 /**
  * The class representing an IPv6 network address.
  */
-@JsonDeserialize(using=IPv6NetDeserializer.class)
-@JsonSerialize(using=IPv6NetSerializer.class)
+@JsonDeserialize(using = IPv6NetDeserializer.class)
+@JsonSerialize(using = IPv6NetSerializer.class)
 public class IPv6Net {
-    private IPv6 address;		// The IPv6 address
-    private short prefixLen;		// The prefix length
+    private IPv6 address;        // The IPv6 address
+    private short prefixLen;        // The prefix length
 
     /**
      * Default constructor.
      */
     public IPv6Net() {
-	this.prefixLen = 0;
+        this.prefixLen = 0;
     }
 
     /**
@@ -28,20 +28,20 @@
      * @param other the object to copy from.
      */
     public IPv6Net(IPv6Net other) {
-	if (other.address != null)
-	    this.address = new IPv6(other.address);
-	this.prefixLen = other.prefixLen;
+        if (other.address != null)
+            this.address = new IPv6(other.address);
+        this.prefixLen = other.prefixLen;
     }
 
     /**
      * Constructor for a given address and prefix length.
      *
-     * @param address the address to use.
+     * @param address   the address to use.
      * @param prefixLen the prefix length to use.
      */
     public IPv6Net(IPv6 address, short prefixLen) {
-	this.address = address;
-	this.prefixLen = prefixLen;
+        this.address = address;
+        this.prefixLen = prefixLen;
     }
 
     /**
@@ -50,13 +50,13 @@
      * @param value the value to use.
      */
     public IPv6Net(String value) {
-	String[] splits = value.split("/");
-	if (splits.length != 2) {
-	    throw new IllegalArgumentException("Specified IPv6Net address must contain an IPv6 " +
-					       "address and a prefix length separated by '/'");
-	}
-	this.address = new IPv6(splits[0]);
-	this.prefixLen = Short.decode(splits[1]);
+        String[] splits = value.split("/");
+        if (splits.length != 2) {
+            throw new IllegalArgumentException("Specified IPv6Net address must contain an IPv6 " +
+                    "address and a prefix length separated by '/'");
+        }
+        this.address = new IPv6(splits[0]);
+        this.prefixLen = Short.decode(splits[1]);
     }
 
     /**
@@ -64,7 +64,9 @@
      *
      * @return the address value of the IPv6Net address.
      */
-    public IPv6 address() { return address; }
+    public IPv6 address() {
+        return address;
+    }
 
     /**
      * Set the address value of the IPv6Net address.
@@ -72,7 +74,7 @@
      * @param address the address to use.
      */
     public void setAddress(IPv6 address) {
-	this.address = address;
+        this.address = address;
     }
 
     /**
@@ -80,7 +82,9 @@
      *
      * @return the prefix length value of the IPv6Net address.
      */
-    public short prefixLen() { return prefixLen; }
+    public short prefixLen() {
+        return prefixLen;
+    }
 
     /**
      * Set the prefix length value of the IPv6Net address.
@@ -88,18 +92,18 @@
      * @param prefixLen the prefix length to use.
      */
     public void setPrefixLen(short prefixLen) {
-	this.prefixLen = prefixLen;
+        this.prefixLen = prefixLen;
     }
 
     /**
      * Set the value of the IPv6Net address.
      *
-     * @param address the address to use.
+     * @param address   the address to use.
      * @param prefixLen the prefix length to use.
      */
     public void setValue(IPv6 address, short prefixLen) {
-	this.address = address;
-	this.prefixLen = prefixLen;
+        this.address = address;
+        this.prefixLen = prefixLen;
     }
 
     /**
@@ -109,6 +113,6 @@
      */
     @Override
     public String toString() {
-	return this.address.toString() + "/" + this.prefixLen;
+        return this.address.toString() + "/" + this.prefixLen;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/Pair.java b/src/main/java/net/onrc/onos/core/util/Pair.java
index 36a76bb..abf9fed 100644
--- a/src/main/java/net/onrc/onos/core/util/Pair.java
+++ b/src/main/java/net/onrc/onos/core/util/Pair.java
@@ -4,22 +4,22 @@
  * A generic class representing a pair of two values.
  */
 public class Pair<F, S> {
-    public F first;		// The first value in the pair
-    public S second;		// The second value in the pair
+    public F first;        // The first value in the pair
+    public S second;        // The second value in the pair
 
     /**
      * Constructor for a pair of two values.
      *
-     * @param first the first value in the pair.
+     * @param first  the first value in the pair.
      * @param second the second value in the pair.
      */
     public Pair(F first, S second) {
-	this.first = first;
-	this.second = second;
+        this.first = first;
+        this.second = second;
     }
 
     @Override
     public String toString() {
-	return String.format("<%s, %s>", first, second);
+        return String.format("<%s, %s>", first, second);
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/PerformanceMonitor.java b/src/main/java/net/onrc/onos/core/util/PerformanceMonitor.java
index dd5e36f..b6cdd94 100644
--- a/src/main/java/net/onrc/onos/core/util/PerformanceMonitor.java
+++ b/src/main/java/net/onrc/onos/core/util/PerformanceMonitor.java
@@ -15,17 +15,18 @@
     private final static Logger log = LoggerFactory.getLogger(PerformanceMonitor.class);
 
     // experiment name -> PerformanceMonitor
-    private static final ConcurrentHashMap<String,PerformanceMonitor> perfMons = new ConcurrentHashMap<>();
+    private static final ConcurrentHashMap<String, PerformanceMonitor> perfMons = new ConcurrentHashMap<>();
+
     public static PerformanceMonitor experiment(String name) {
-	PerformanceMonitor pm = perfMons.get(name);
-	if (pm == null) {
-	    pm = new PerformanceMonitor();
-	    PerformanceMonitor existing = perfMons.putIfAbsent(name, pm);
-	    if (existing != null) {
-		pm = existing;
-	    }
-	}
-	return pm;
+        PerformanceMonitor pm = perfMons.get(name);
+        if (pm == null) {
+            pm = new PerformanceMonitor();
+            PerformanceMonitor existing = perfMons.putIfAbsent(name, pm);
+            if (existing != null) {
+                pm = existing;
+            }
+        }
+        return pm;
     }
 
     // tag -> Measurements
@@ -36,111 +37,111 @@
 
     /**
      * Start a performance measurement, identified by a tag
-     *
+     * <p/>
      * Note: Only a single measurement can use the same tag at a time.
      * ..... not true anymore.
      *
      * @param tag for performance measurement
      */
     public Measurement startStep(String tag) {
-	long start = System.nanoTime();
-	if(start < experimentStart) {
-	    experimentStart = start;
-	}
-	Queue<Measurement> list = map.get(tag);
-	if(list == null) {
-	    list = new ConcurrentLinkedQueue<Measurement>();
-	    Queue<Measurement> existing_list = map.putIfAbsent(tag, list);
-	    if (existing_list != null) {
-		// someone concurrently added, using theirs
-		list = existing_list;
-	    }
-	}
-	Measurement m = new Measurement();
-	list.add(m);
-	m.start();
-	overhead += System.nanoTime() - start;
-	return m;
+        long start = System.nanoTime();
+        if (start < experimentStart) {
+            experimentStart = start;
+        }
+        Queue<Measurement> list = map.get(tag);
+        if (list == null) {
+            list = new ConcurrentLinkedQueue<Measurement>();
+            Queue<Measurement> existing_list = map.putIfAbsent(tag, list);
+            if (existing_list != null) {
+                // someone concurrently added, using theirs
+                list = existing_list;
+            }
+        }
+        Measurement m = new Measurement();
+        list.add(m);
+        m.start();
+        overhead += System.nanoTime() - start;
+        return m;
     }
 
     /**
      * Stop a performance measurement.
-     *
+     * <p/>
      * You must have already started a measurement with tag.
      *
      * @param tag for performance measurement
      */
     public void stopStep(String tag) {
-	long time = System.nanoTime();
-	Queue<Measurement> list = map.get(tag);
-	if(list == null || list.size() == 0) {
-	    log.error("Tag {} does not exist", tag);
-	}
-	list.peek().stop(time);
-	if(list.size() > 1) {
-	    log.error("Tag {} has multiple measurements", tag);
-	}
-	overhead += System.nanoTime() - time;
+        long time = System.nanoTime();
+        Queue<Measurement> list = map.get(tag);
+        if (list == null || list.size() == 0) {
+            log.error("Tag {} does not exist", tag);
+        }
+        list.peek().stop(time);
+        if (list.size() > 1) {
+            log.error("Tag {} has multiple measurements", tag);
+        }
+        overhead += System.nanoTime() - time;
     }
 
     /**
      * Clear all performance measurements.
      */
     public void reset() {
-	map.clear();
-	overhead = 0;
-	experimentStart = Long.MAX_VALUE;
+        map.clear();
+        overhead = 0;
+        experimentStart = Long.MAX_VALUE;
     }
 
     /**
      * Write all performance measurements to the log
      */
     public void reportAll() {
-	String result = "Performance Results: (avg/start/stop/count)\n";
-	if(map.size() == 0) {
-	    result += "No Measurements";
-	    log.error(result);
-	    return;
-	}
-	long experimentEnd = -1;
-	for(Entry<String, Queue<Measurement>> e : map.entrySet()) {
-	    String key = e.getKey();
-	    Queue<Measurement> list = e.getValue();
-	    long total = 0, count = 0;
-	    long start = Long.MAX_VALUE, stop = -1;
-	    for(Measurement m : list) {
-		if(m.stop < 0) {
-		    continue; // measurement has not been stopped
-		}
-		// Collect overall start and end times
-		if(m.start < start) {
-		    start = m.start;
-		}
-		if(m.stop > stop) {
-		    stop = m.stop;
-		    if(stop > experimentEnd) {
-			experimentEnd = stop;
-		    }
-		}
-		// Collect statistics for average
-		total += m.elapsed();
-		count++;
-	    }
-	    double avg = (double) total / count;
-	    // Normalize start/stop
-	    start -= experimentStart;
-	    stop -= experimentStart;
-	    result += key + '=' +
-		    (avg / normalization) + '/' +
-		    (start / normalization) + '/' +
-		    (stop / normalization) + '/' +
-		    count + '\n';
-	}
-	double overheadMs = overhead / normalization;
-	double experimentElapsed = (experimentEnd - experimentStart) / normalization;
-	result += "TotalTime:" + experimentElapsed + "/Overhead:" + overheadMs;
-	log.error(result);
-//	log.error("Performance Results: {} with measurement overhead: {} ms", map, overheadMilli);
+        String result = "Performance Results: (avg/start/stop/count)\n";
+        if (map.size() == 0) {
+            result += "No Measurements";
+            log.error(result);
+            return;
+        }
+        long experimentEnd = -1;
+        for (Entry<String, Queue<Measurement>> e : map.entrySet()) {
+            String key = e.getKey();
+            Queue<Measurement> list = e.getValue();
+            long total = 0, count = 0;
+            long start = Long.MAX_VALUE, stop = -1;
+            for (Measurement m : list) {
+                if (m.stop < 0) {
+                    continue; // measurement has not been stopped
+                }
+                // Collect overall start and end times
+                if (m.start < start) {
+                    start = m.start;
+                }
+                if (m.stop > stop) {
+                    stop = m.stop;
+                    if (stop > experimentEnd) {
+                        experimentEnd = stop;
+                    }
+                }
+                // Collect statistics for average
+                total += m.elapsed();
+                count++;
+            }
+            double avg = (double) total / count;
+            // Normalize start/stop
+            start -= experimentStart;
+            stop -= experimentStart;
+            result += key + '=' +
+                    (avg / normalization) + '/' +
+                    (start / normalization) + '/' +
+                    (stop / normalization) + '/' +
+                    count + '\n';
+        }
+        double overheadMs = overhead / normalization;
+        double experimentElapsed = (experimentEnd - experimentStart) / normalization;
+        result += "TotalTime:" + experimentElapsed + "/Overhead:" + overheadMs;
+        log.error(result);
+//      log.error("Performance Results: {} with measurement overhead: {} ms", map, overheadMilli);
     }
 
     /**
@@ -149,79 +150,79 @@
      * @param tag the tag name.
      */
     public void reportStep(String tag) {
-	Queue<Measurement> list = map.get(tag);
-	if(list == null) {
-	    return; //TODO
-	}
-	//TODO: fix this;
-	Measurement m = list.peek();
-	if (m != null) {
-	    log.error("Performance Result: tag = {} start = {} stop = {} elapsed = {}",
-		      tag, m.start, m.stop, m.toString());
-	} else {
-	    log.error("Performance Result: unknown tag {}", tag);
-	}
+        Queue<Measurement> list = map.get(tag);
+        if (list == null) {
+            return; //TODO
+        }
+        //TODO: fix this;
+        Measurement m = list.peek();
+        if (m != null) {
+            log.error("Performance Result: tag = {} start = {} stop = {} elapsed = {}",
+                    tag, m.start, m.stop, m.toString());
+        } else {
+            log.error("Performance Result: unknown tag {}", tag);
+        }
     }
 
     /**
      * A single performance measurement
      */
     public static class Measurement {
-	long start;
-	long stop = -1;
+        long start;
+        long stop = -1;
 
-	/**
-	 * Start the measurement
-	 */
-	public void start() {
-	    if(start <= 0) {
-		start = System.nanoTime();
-	    }
-	}
+        /**
+         * Start the measurement
+         */
+        public void start() {
+            if (start <= 0) {
+                start = System.nanoTime();
+            }
+        }
 
-	/**
-	 * Stop the measurement
-	 */
-	public void stop() {
-	    long now = System.nanoTime();
-	    stop(now);
-	}
+        /**
+         * Stop the measurement
+         */
+        public void stop() {
+            long now = System.nanoTime();
+            stop(now);
+        }
 
-	/**
-	 * Stop the measurement at a specific time
-	 * @param time to stop
-	 */
-	public void stop(long time){
-	    if(stop <= 0) {
-		stop = time;
-	    }
-	}
+        /**
+         * Stop the measurement at a specific time
+         *
+         * @param time to stop
+         */
+        public void stop(long time) {
+            if (stop <= 0) {
+                stop = time;
+            }
+        }
 
-	/**
-	 * Compute the elapsed time of the measurement in nanoseconds
-	 *
-	 * @return the measurement time in nanoseconds, or -1 if the measurement is stil running.
-	 */
-	public long elapsed() {
-	    if(stop <= 0) {
-		return -1;
-	    }
-	    else {
-		return stop - start;
-	    }
-	}
+        /**
+         * Compute the elapsed time of the measurement in nanoseconds
+         *
+         * @return the measurement time in nanoseconds, or -1 if the measurement is stil running.
+         */
+        public long elapsed() {
+            if (stop <= 0) {
+                return -1;
+            } else {
+                return stop - start;
+            }
+        }
 
-	/**
-	 * Returns the number of milliseconds for the measurement as a String.
-	 */
-	@Override
-	public String toString() {
-	    double milli = elapsed() / normalization;
-	    double startMs = start / normalization;
-	    double stopMs = stop / normalization;
+        /**
+         * Returns the number of milliseconds for the measurement as a String.
+         */
+        @Override
+        public String toString() {
+            double milli = elapsed() / normalization;
+            double startMs = start / normalization;
+            double stopMs = stop / normalization;
 
-	    return milli + "ms/" + startMs + '/' + stopMs;
-	}
+            return milli + "ms/" + startMs + '/' + stopMs;
+        }
     }
 
     @Deprecated
@@ -229,64 +230,87 @@
 
     @Deprecated
     public static Measurement start(String tag) {
-	return theInstance.startStep(tag);
+        return theInstance.startStep(tag);
     }
 
     @Deprecated
     public static void stop(String tag) {
-	theInstance.stopStep(tag);;
+        theInstance.stopStep(tag);
+        ;
     }
 
     @Deprecated
     public static void clear() {
-	theInstance.reset();;
+        theInstance.reset();
+        ;
     }
 
     @Deprecated
     public static void report() {
-	theInstance.reportAll();;
+        theInstance.reportAll();
+        ;
     }
 
     @Deprecated
     public static void report(String tag) {
-	theInstance.reportStep(tag);
+        theInstance.reportStep(tag);
     }
 
-    public static void main(String args[]){
-	// test the measurement overhead
-	String tag;
-	for(int i = 0; i < 2; i++){
-	    tag = "foo foo foo";
-	    Measurement m;
-	    m = start(tag); System.out.println(tag); m.stop();
-	    m = start(tag); System.out.println(tag); m.stop();
-	    m = start(tag); System.out.println(tag); m.stop();
-	    m = start(tag); System.out.println(tag); m.stop();
-	    tag = "bar";
-	    start(tag); stop(tag);
-	    tag = "baz";
-	    start(tag); stop(tag);
-	    report();
-	    clear();
-	}
-	for(int i = 0; i < 100; i++){
-	    tag = "a";
-	    start(tag); stop(tag);
-	    start(tag); stop(tag);
+    public static void main(String args[]) {
+        // test the measurement overhead
+        String tag;
+        for (int i = 0; i < 2; i++) {
+            tag = "foo foo foo";
+            Measurement m;
+            m = start(tag);
+            System.out.println(tag);
+            m.stop();
+            m = start(tag);
+            System.out.println(tag);
+            m.stop();
+            m = start(tag);
+            System.out.println(tag);
+            m.stop();
+            m = start(tag);
+            System.out.println(tag);
+            m.stop();
+            tag = "bar";
+            start(tag);
+            stop(tag);
+            tag = "baz";
+            start(tag);
+            stop(tag);
+            report();
+            clear();
+        }
+        for (int i = 0; i < 100; i++) {
+            tag = "a";
+            start(tag);
+            stop(tag);
+            start(tag);
+            stop(tag);
 
-	    start(tag); stop(tag);
-	    start(tag); stop(tag);
-	    start(tag); stop(tag);
-	    start(tag); stop(tag);
-	    start(tag); stop(tag);
-	    start(tag); stop(tag);
+            start(tag);
+            stop(tag);
+            start(tag);
+            stop(tag);
+            start(tag);
+            stop(tag);
+            start(tag);
+            stop(tag);
+            start(tag);
+            stop(tag);
+            start(tag);
+            stop(tag);
 
-	    tag = "b";
-	    start(tag); stop(tag);
-	    tag = "c";
-	    start(tag); stop(tag);
-	    report();
-	    clear();
-	}
+            tag = "b";
+            start(tag);
+            stop(tag);
+            tag = "c";
+            start(tag);
+            stop(tag);
+            report();
+            clear();
+        }
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/Port.java b/src/main/java/net/onrc/onos/core/util/Port.java
index 722c802..77d983b 100644
--- a/src/main/java/net/onrc/onos/core/util/Port.java
+++ b/src/main/java/net/onrc/onos/core/util/Port.java
@@ -9,63 +9,65 @@
 public class Port {
     /**
      * Special port values.
-     *
+     * <p/>
      * Those values are taken as-is from the OpenFlow-v1.0.0 specification
      * (pp 18-19).
      */
     public enum PortValues {
-	/* Maximum number of physical switch ports. */
-	PORT_MAX		((short)0xff00),
+        /* Maximum number of physical switch ports. */
+        PORT_MAX((short) 0xff00),
 
-	/* Fake output "ports". */
+    /* Fake output "ports". */
 
-	/* Send the packet out the input port. This
-	   virtual port must be explicitly used
-	   in order to send back out of the input
-	   port. */
-	PORT_IN_PORT		((short)0xfff8),
+        /* Send the packet out the input port. This
+           virtual port must be explicitly used
+           in order to send back out of the input
+           port. */
+        PORT_IN_PORT((short) 0xfff8),
 
-	/* Perform actions in flow table.
-	   NB: This can only be the destination
-	   port for packet-out messages. */
-	PORT_TABLE		((short)0xfff9),
+        /* Perform actions in flow table.
+           NB: This can only be the destination
+           port for packet-out messages. */
+        PORT_TABLE((short) 0xfff9),
 
-	/* Process with normal L2/L3 switching. */
-	PORT_NORMAL		((short)0xfffa),
+        /* Process with normal L2/L3 switching. */
+        PORT_NORMAL((short) 0xfffa),
 
-	/* All physical ports except input port and
-	   those disabled by STP. */
-	PORT_FLOOD		((short)0xfffb),
+        /* All physical ports except input port and
+           those disabled by STP. */
+        PORT_FLOOD((short) 0xfffb),
 
-	/* All physical ports except input port. */
-	PORT_ALL		((short)0xfffc),
+        /* All physical ports except input port. */
+        PORT_ALL((short) 0xfffc),
 
-	/* Send to controller. */
-	PORT_CONTROLLER		((short)0xfffd),
+        /* Send to controller. */
+        PORT_CONTROLLER((short) 0xfffd),
 
-	/* Local openflow "port". */
-	PORT_LOCAL		((short)0xfffe),
+        /* Local openflow "port". */
+        PORT_LOCAL((short) 0xfffe),
 
-	/* Not associated with a physical port. */
-	PORT_NONE		((short)0xffff);
+        /* Not associated with a physical port. */
+        PORT_NONE((short) 0xffff);
 
-	private final short value;	// The value
+        private final short value;    // The value
 
-	/**
-	 * Constructor for a given value.
-	 *
-	 * @param value the value to use for the initialization.
-	 */
-	private PortValues(short value) {
-	    this.value = value;
-	}
+        /**
+         * Constructor for a given value.
+         *
+         * @param value the value to use for the initialization.
+         */
+        private PortValues(short value) {
+            this.value = value;
+        }
 
-	/**
-	 * Get the value as a short integer.
-	 *
-	 * @return the value as a short integer.
-	 */
-	private short value() { return this.value; }
+        /**
+         * Get the value as a short integer.
+         *
+         * @return the value as a short integer.
+         */
+        private short value() {
+            return this.value;
+        }
     }
 
     private short value;
@@ -74,7 +76,7 @@
      * Default constructor.
      */
     public Port() {
-	this.value = 0;
+        this.value = 0;
     }
 
     /**
@@ -83,7 +85,7 @@
      * @param other the object to copy from.
      */
     public Port(Port other) {
-	this.value = other.value();
+        this.value = other.value();
     }
 
     /**
@@ -92,7 +94,7 @@
      * @param value the value to use.
      */
     public Port(short value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -101,7 +103,7 @@
      * @param value the value to use.
      */
     public Port(PortValues value) {
-	this.value = value.value();
+        this.value = value.value();
     }
 
     /**
@@ -110,7 +112,9 @@
      * @return the value of the port.
      */
     @JsonProperty("value")
-    public short value() { return value; }
+    public short value() {
+        return value;
+    }
 
     /**
      * Set the value of the port.
@@ -119,7 +123,7 @@
      */
     @JsonProperty("value")
     public void setValue(short value) {
-	this.value = value;
+        this.value = value;
     }
 
     /**
@@ -129,25 +133,25 @@
      */
     @Override
     public String toString() {
-	return Short.toString(this.value);
+        return Short.toString(this.value);
     }
-    
+
 
     @Override
     public boolean equals(Object other) {
-    	if (!(other instanceof Port)) {
-    		return false;
-    	}
+        if (!(other instanceof Port)) {
+            return false;
+        }
 
-    	Port otherPort = (Port) other;
+        Port otherPort = (Port) other;
 
-    	return value == otherPort.value;
+        return value == otherPort.value;
     }
 
     @Override
     public int hashCode() {
-    	int hash = 17;
-    	hash += 31 * hash + (int)value; 
-    	return hash;
+        int hash = 17;
+        hash += 31 * hash + (int) value;
+        return hash;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/Switch.java b/src/main/java/net/onrc/onos/core/util/Switch.java
index e3c525f..d1a463c 100644
--- a/src/main/java/net/onrc/onos/core/util/Switch.java
+++ b/src/main/java/net/onrc/onos/core/util/Switch.java
@@ -11,44 +11,44 @@
      * The Switch state.
      */
     public enum SwitchState {
-	INACTIVE,
-	ACTIVE,
+        INACTIVE,
+        ACTIVE,
     }
 
-    private Dpid dpid;			// The DPID of the switch
-    private SwitchState state;		// The state of the switch
+    private Dpid dpid;            // The DPID of the switch
+    private SwitchState state;        // The state of the switch
 
     /**
      * Default constructor.
-     *
+     * <p/>
      * NOTE: The default state for the switch is INACTIVE.
      */
     public Switch() {
-	this.dpid = new Dpid();
-	this.state = SwitchState.INACTIVE;
+        this.dpid = new Dpid();
+        this.state = SwitchState.INACTIVE;
     }
 
     /**
      * Constructor for a given DPID.
-     *
+     * <p/>
      * NOTE: The state for the switch with a given DPID is ACTIVE.
      *
      * @param dpid the DPID to use.
      */
     public Switch(Dpid dpid) {
-	this.dpid = dpid;
-	this.state = SwitchState.ACTIVE;
+        this.dpid = dpid;
+        this.state = SwitchState.ACTIVE;
     }
 
     /**
      * Constructor for a given DPID and Switch State.
      *
-     * @param dpid the DPID to use.
+     * @param dpid  the DPID to use.
      * @param state the Switch State to use.
      */
     public Switch(Dpid dpid, SwitchState state) {
-	this.dpid = dpid;
-	this.state = state;
+        this.dpid = dpid;
+        this.state = state;
     }
 
     /**
@@ -57,7 +57,9 @@
      * @return the DPID.
      */
     @JsonProperty("dpid")
-    public Dpid dpid() { return dpid; }
+    public Dpid dpid() {
+        return dpid;
+    }
 
     /**
      * Set the DPID.
@@ -66,7 +68,7 @@
      */
     @JsonProperty("dpid")
     public void setDpid(Dpid dpid) {
-	this.dpid = dpid;
+        this.dpid = dpid;
     }
 
     /**
@@ -75,7 +77,9 @@
      * @return the state.
      */
     @JsonProperty("state")
-    public SwitchState state() { return state; }
+    public SwitchState state() {
+        return state;
+    }
 
     /**
      * Set the state.
@@ -84,33 +88,33 @@
      */
     @JsonProperty("state")
     public void setState(SwitchState state) {
-	this.state = state;
+        this.state = state;
     }
 
     /**
      * Set the Switch State to ACTIVE.
      */
     public void setStateActive() {
-	this.state = SwitchState.ACTIVE;
+        this.state = SwitchState.ACTIVE;
     }
 
     /**
      * Set the Switch State to INACTIVE.
      */
     public void setStateInactive() {
-	this.state = SwitchState.INACTIVE;
+        this.state = SwitchState.INACTIVE;
     }
 
     /**
      * Convert the Switch value to a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  dpid/state
+     * dpid/state
      *
      * @return the Switch value as a string.
      */
     @Override
     public String toString() {
-	return this.dpid.toString() + "/" + this.state.toString();
+        return this.dpid.toString() + "/" + this.state.toString();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/SwitchPort.java b/src/main/java/net/onrc/onos/core/util/SwitchPort.java
index edc8905..eb72b72 100644
--- a/src/main/java/net/onrc/onos/core/util/SwitchPort.java
+++ b/src/main/java/net/onrc/onos/core/util/SwitchPort.java
@@ -6,8 +6,8 @@
  * The class representing a Switch-Port.
  */
 public class SwitchPort {
-    private Dpid dpid;		// The DPID of the switch
-    private Port port;		// The port of the switch
+    private Dpid dpid;        // The DPID of the switch
+    private Port port;        // The port of the switch
 
     /**
      * Default constructor.
@@ -22,8 +22,8 @@
      * @param port the port to use.
      */
     public SwitchPort(Dpid dpid, Port port) {
-	this.dpid = dpid;
-	this.port = port;
+        this.dpid = dpid;
+        this.port = port;
     }
 
     /**
@@ -32,7 +32,9 @@
      * @return the DPID value of the Switch-Port.
      */
     @JsonProperty("dpid")
-    public Dpid dpid() { return dpid; }
+    public Dpid dpid() {
+        return dpid;
+    }
 
     /**
      * Set the DPID value of the Switch-Port.
@@ -41,7 +43,7 @@
      */
     @JsonProperty("dpid")
     public void setDpid(Dpid dpid) {
-	this.dpid = dpid;
+        this.dpid = dpid;
     }
 
     /**
@@ -50,7 +52,9 @@
      * @return the port value of the Switch-Port.
      */
     @JsonProperty("port")
-    public Port port() { return port; }
+    public Port port() {
+        return port;
+    }
 
     /**
      * Set the port value of the Switch-Port.
@@ -59,7 +63,7 @@
      */
     @JsonProperty("port")
     public void setPort(Port port) {
-	this.port = port;
+        this.port = port;
     }
 
     /**
@@ -69,41 +73,41 @@
      * @param port the port to use.
      */
     public void setValue(Dpid dpid, Port port) {
-	this.dpid = dpid;
-	this.port = port;
+        this.dpid = dpid;
+        this.port = port;
     }
 
     /**
      * Convert the Switch-Port value to a string.
-     *
+     * <p/>
      * The string has the following form:
-     *  01:02:03:04:05:06:07:08/1234
+     * 01:02:03:04:05:06:07:08/1234
      *
      * @return the Switch-Port value as a string.
      */
     @Override
     public String toString() {
-	return this.dpid.toString() + "/" + this.port;
+        return this.dpid.toString() + "/" + this.port;
     }
-    
+
 
     @Override
     public boolean equals(Object other) {
-    	if (!(other instanceof SwitchPort)) {
-    		return false;
-    	}
+        if (!(other instanceof SwitchPort)) {
+            return false;
+        }
 
-    	SwitchPort otherSwitchPort = (SwitchPort) other;
+        SwitchPort otherSwitchPort = (SwitchPort) other;
 
-    	return (dpid.equals(otherSwitchPort.dpid) &&
-    			port.equals(otherSwitchPort.port));
+        return (dpid.equals(otherSwitchPort.dpid) &&
+                port.equals(otherSwitchPort.port));
     }
 
     @Override
     public int hashCode() {
-    	int hash = 17;
-    	hash += 31 * hash + dpid.hashCode();
-    	hash += 31 * hash + port.hashCode();
-    	return hash;
+        int hash = 17;
+        hash += 31 * hash + dpid.hashCode();
+        hash += 31 * hash + port.hashCode();
+        return hash;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/DpidDeserializer.java b/src/main/java/net/onrc/onos/core/util/serializers/DpidDeserializer.java
index 7a8c570..955f0ff 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/DpidDeserializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/DpidDeserializer.java
@@ -21,20 +21,20 @@
 
     @Override
     public Dpid deserialize(JsonParser jp,
-			    DeserializationContext ctxt)
-	throws IOException, JsonProcessingException {
+                            DeserializationContext ctxt)
+            throws IOException, JsonProcessingException {
 
-	Dpid dpid = null;
+        Dpid dpid = null;
 
-	jp.nextToken();		// Move to JsonToken.START_OBJECT
-	while (jp.nextToken() != JsonToken.END_OBJECT) {
-	    String fieldname = jp.getCurrentName();
-	    if ("value".equals(fieldname)) {
-		String value = jp.getText();
-		log.debug("Fieldname: {} Value: {}", fieldname, value);
-		dpid = new Dpid(value);
-	    }
-	}
-	return dpid;
+        jp.nextToken();        // Move to JsonToken.START_OBJECT
+        while (jp.nextToken() != JsonToken.END_OBJECT) {
+            String fieldname = jp.getCurrentName();
+            if ("value".equals(fieldname)) {
+                String value = jp.getText();
+                log.debug("Fieldname: {} Value: {}", fieldname, value);
+                dpid = new Dpid(value);
+            }
+        }
+        return dpid;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/DpidSerializer.java b/src/main/java/net/onrc/onos/core/util/serializers/DpidSerializer.java
index 4e784f2..68766f9 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/DpidSerializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/DpidSerializer.java
@@ -16,10 +16,10 @@
 
     @Override
     public void serialize(Dpid dpid, JsonGenerator jGen,
-			  SerializerProvider serializer)
-	throws IOException, JsonProcessingException {
-	jGen.writeStartObject();
-	jGen.writeStringField("value", dpid.toString());
-	jGen.writeEndObject();
+                          SerializerProvider serializer)
+            throws IOException, JsonProcessingException {
+        jGen.writeStartObject();
+        jGen.writeStringField("value", dpid.toString());
+        jGen.writeEndObject();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/FlowEntryIdDeserializer.java b/src/main/java/net/onrc/onos/core/util/serializers/FlowEntryIdDeserializer.java
index 712daa8..de13574 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/FlowEntryIdDeserializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/FlowEntryIdDeserializer.java
@@ -21,20 +21,20 @@
 
     @Override
     public FlowEntryId deserialize(JsonParser jp,
-				   DeserializationContext ctxt)
-	throws IOException, JsonProcessingException {
+                                   DeserializationContext ctxt)
+            throws IOException, JsonProcessingException {
 
-	FlowEntryId flowEntryId = null;
+        FlowEntryId flowEntryId = null;
 
-	jp.nextToken();		// Move to JsonToken.START_OBJECT
-	while (jp.nextToken() != JsonToken.END_OBJECT) {
-	    String fieldname = jp.getCurrentName();
-	    if ("value".equals(fieldname)) {
-		String value = jp.getText();
-		log.debug("Fieldname: " + fieldname + " Value: " + value);
-		flowEntryId = new FlowEntryId(value);
-	    }
-	}
-	return flowEntryId;
+        jp.nextToken();        // Move to JsonToken.START_OBJECT
+        while (jp.nextToken() != JsonToken.END_OBJECT) {
+            String fieldname = jp.getCurrentName();
+            if ("value".equals(fieldname)) {
+                String value = jp.getText();
+                log.debug("Fieldname: " + fieldname + " Value: " + value);
+                flowEntryId = new FlowEntryId(value);
+            }
+        }
+        return flowEntryId;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/FlowEntryIdSerializer.java b/src/main/java/net/onrc/onos/core/util/serializers/FlowEntryIdSerializer.java
index 3911a4c..bc91f46 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/FlowEntryIdSerializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/FlowEntryIdSerializer.java
@@ -16,8 +16,8 @@
 
     @Override
     public void serialize(FlowEntryId flowEntryId, JsonGenerator jGen,
-			  SerializerProvider serializer)
-	throws IOException, JsonProcessingException {
-	jGen.writeString(flowEntryId.toString());
+                          SerializerProvider serializer)
+            throws IOException, JsonProcessingException {
+        jGen.writeString(flowEntryId.toString());
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/FlowIdDeserializer.java b/src/main/java/net/onrc/onos/core/util/serializers/FlowIdDeserializer.java
index d1b91a8..12c5cbd 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/FlowIdDeserializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/FlowIdDeserializer.java
@@ -21,20 +21,20 @@
 
     @Override
     public FlowId deserialize(JsonParser jp,
-			      DeserializationContext ctxt)
-	throws IOException, JsonProcessingException {
+                              DeserializationContext ctxt)
+            throws IOException, JsonProcessingException {
 
-	FlowId flowId = null;
+        FlowId flowId = null;
 
-	jp.nextToken();		// Move to JsonToken.START_OBJECT
-	while (jp.nextToken() != JsonToken.END_OBJECT) {
-	    String fieldname = jp.getCurrentName();
-	    if ("value".equals(fieldname)) {
-		String value = jp.getText();
-		log.debug("Fieldname: {} Value: {}", fieldname, value);
-		flowId = new FlowId(value);
-	    }
-	}
-	return flowId;
+        jp.nextToken();        // Move to JsonToken.START_OBJECT
+        while (jp.nextToken() != JsonToken.END_OBJECT) {
+            String fieldname = jp.getCurrentName();
+            if ("value".equals(fieldname)) {
+                String value = jp.getText();
+                log.debug("Fieldname: {} Value: {}", fieldname, value);
+                flowId = new FlowId(value);
+            }
+        }
+        return flowId;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/FlowIdSerializer.java b/src/main/java/net/onrc/onos/core/util/serializers/FlowIdSerializer.java
index b0d020e..37a3e45 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/FlowIdSerializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/FlowIdSerializer.java
@@ -16,10 +16,10 @@
 
     @Override
     public void serialize(FlowId flowId, JsonGenerator jGen,
-			  SerializerProvider serializer)
-	throws IOException, JsonProcessingException {
-	jGen.writeStartObject();
-	jGen.writeStringField("value", flowId.toString());
-	jGen.writeEndObject();
+                          SerializerProvider serializer)
+            throws IOException, JsonProcessingException {
+        jGen.writeStartObject();
+        jGen.writeStringField("value", flowId.toString());
+        jGen.writeEndObject();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/IPv4Deserializer.java b/src/main/java/net/onrc/onos/core/util/serializers/IPv4Deserializer.java
index 2992bfd..f58f746 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/IPv4Deserializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/IPv4Deserializer.java
@@ -21,20 +21,20 @@
 
     @Override
     public IPv4 deserialize(JsonParser jp,
-			    DeserializationContext ctxt)
-	throws IOException, JsonProcessingException {
+                            DeserializationContext ctxt)
+            throws IOException, JsonProcessingException {
 
-	IPv4 ipv4 = null;
+        IPv4 ipv4 = null;
 
-	jp.nextToken();		// Move to JsonToken.START_OBJECT
-	while (jp.nextToken() != JsonToken.END_OBJECT) {
-	    String fieldname = jp.getCurrentName();
-	    if ("value".equals(fieldname)) {
-		String value = jp.getText();
-		log.debug("Fieldname: {} Value: {}", fieldname, value);
-		ipv4 = new IPv4(value);
-	    }
-	}
-	return ipv4;
+        jp.nextToken();        // Move to JsonToken.START_OBJECT
+        while (jp.nextToken() != JsonToken.END_OBJECT) {
+            String fieldname = jp.getCurrentName();
+            if ("value".equals(fieldname)) {
+                String value = jp.getText();
+                log.debug("Fieldname: {} Value: {}", fieldname, value);
+                ipv4 = new IPv4(value);
+            }
+        }
+        return ipv4;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/IPv4NetDeserializer.java b/src/main/java/net/onrc/onos/core/util/serializers/IPv4NetDeserializer.java
index 68f74c4..da68668 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/IPv4NetDeserializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/IPv4NetDeserializer.java
@@ -21,20 +21,20 @@
 
     @Override
     public IPv4Net deserialize(JsonParser jp,
-			       DeserializationContext ctxt)
-	throws IOException, JsonProcessingException {
+                               DeserializationContext ctxt)
+            throws IOException, JsonProcessingException {
 
-	IPv4Net ipv4Net = null;
+        IPv4Net ipv4Net = null;
 
-	jp.nextToken();		// Move to JsonToken.START_OBJECT
-	while (jp.nextToken() != JsonToken.END_OBJECT) {
-	    String fieldname = jp.getCurrentName();
-	    if ("value".equals(fieldname)) {
-		String value = jp.getText();
-		log.debug("Fieldname: {} Value: {}", fieldname, value);
-		ipv4Net = new IPv4Net(value);
-	    }
-	}
-	return ipv4Net;
+        jp.nextToken();        // Move to JsonToken.START_OBJECT
+        while (jp.nextToken() != JsonToken.END_OBJECT) {
+            String fieldname = jp.getCurrentName();
+            if ("value".equals(fieldname)) {
+                String value = jp.getText();
+                log.debug("Fieldname: {} Value: {}", fieldname, value);
+                ipv4Net = new IPv4Net(value);
+            }
+        }
+        return ipv4Net;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/IPv4NetSerializer.java b/src/main/java/net/onrc/onos/core/util/serializers/IPv4NetSerializer.java
index 697f846..f44aeb3 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/IPv4NetSerializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/IPv4NetSerializer.java
@@ -16,10 +16,10 @@
 
     @Override
     public void serialize(IPv4Net ipv4Net, JsonGenerator jGen,
-			  SerializerProvider serializer)
-	throws IOException, JsonProcessingException {
-	jGen.writeStartObject();
-	jGen.writeStringField("value", ipv4Net.toString());
-	jGen.writeEndObject();
+                          SerializerProvider serializer)
+            throws IOException, JsonProcessingException {
+        jGen.writeStartObject();
+        jGen.writeStringField("value", ipv4Net.toString());
+        jGen.writeEndObject();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/IPv4Serializer.java b/src/main/java/net/onrc/onos/core/util/serializers/IPv4Serializer.java
index 773fd1d..37a5564 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/IPv4Serializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/IPv4Serializer.java
@@ -16,10 +16,10 @@
 
     @Override
     public void serialize(IPv4 ipv4, JsonGenerator jGen,
-			  SerializerProvider serializer)
-	throws IOException, JsonProcessingException {
-	jGen.writeStartObject();
-	jGen.writeStringField("value", ipv4.toString());
-	jGen.writeEndObject();
+                          SerializerProvider serializer)
+            throws IOException, JsonProcessingException {
+        jGen.writeStartObject();
+        jGen.writeStringField("value", ipv4.toString());
+        jGen.writeEndObject();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/IPv6Deserializer.java b/src/main/java/net/onrc/onos/core/util/serializers/IPv6Deserializer.java
index 6627d2a..3b9673a 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/IPv6Deserializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/IPv6Deserializer.java
@@ -21,20 +21,20 @@
 
     @Override
     public IPv6 deserialize(JsonParser jp,
-			    DeserializationContext ctxt)
-	throws IOException, JsonProcessingException {
+                            DeserializationContext ctxt)
+            throws IOException, JsonProcessingException {
 
-	IPv6 ipv6 = null;
+        IPv6 ipv6 = null;
 
-	jp.nextToken();		// Move to JsonToken.START_OBJECT
-	while (jp.nextToken() != JsonToken.END_OBJECT) {
-	    String fieldname = jp.getCurrentName();
-	    if ("value".equals(fieldname)) {
-		String value = jp.getText();
-		log.debug("Fieldname: {} Value: {}", fieldname, value);
-		ipv6 = new IPv6(value);
-	    }
-	}
-	return ipv6;
+        jp.nextToken();        // Move to JsonToken.START_OBJECT
+        while (jp.nextToken() != JsonToken.END_OBJECT) {
+            String fieldname = jp.getCurrentName();
+            if ("value".equals(fieldname)) {
+                String value = jp.getText();
+                log.debug("Fieldname: {} Value: {}", fieldname, value);
+                ipv6 = new IPv6(value);
+            }
+        }
+        return ipv6;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/IPv6NetDeserializer.java b/src/main/java/net/onrc/onos/core/util/serializers/IPv6NetDeserializer.java
index 08b8018..2b80984 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/IPv6NetDeserializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/IPv6NetDeserializer.java
@@ -21,20 +21,20 @@
 
     @Override
     public IPv6Net deserialize(JsonParser jp,
-			       DeserializationContext ctxt)
-	throws IOException, JsonProcessingException {
+                               DeserializationContext ctxt)
+            throws IOException, JsonProcessingException {
 
-	IPv6Net ipv6Net = null;
+        IPv6Net ipv6Net = null;
 
-	jp.nextToken();		// Move to JsonToken.START_OBJECT
-	while (jp.nextToken() != JsonToken.END_OBJECT) {
-	    String fieldname = jp.getCurrentName();
-	    if ("value".equals(fieldname)) {
-		String value = jp.getText();
-		log.debug("Fieldname: {} Value: {}", fieldname, value);
-		ipv6Net = new IPv6Net(value);
-	    }
-	}
-	return ipv6Net;
+        jp.nextToken();        // Move to JsonToken.START_OBJECT
+        while (jp.nextToken() != JsonToken.END_OBJECT) {
+            String fieldname = jp.getCurrentName();
+            if ("value".equals(fieldname)) {
+                String value = jp.getText();
+                log.debug("Fieldname: {} Value: {}", fieldname, value);
+                ipv6Net = new IPv6Net(value);
+            }
+        }
+        return ipv6Net;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/IPv6NetSerializer.java b/src/main/java/net/onrc/onos/core/util/serializers/IPv6NetSerializer.java
index 99bd654..690b17f 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/IPv6NetSerializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/IPv6NetSerializer.java
@@ -16,10 +16,10 @@
 
     @Override
     public void serialize(IPv6Net ipv6Net, JsonGenerator jGen,
-			  SerializerProvider serializer)
-	throws IOException, JsonProcessingException {
-	jGen.writeStartObject();
-	jGen.writeStringField("value", ipv6Net.toString());
-	jGen.writeEndObject();
+                          SerializerProvider serializer)
+            throws IOException, JsonProcessingException {
+        jGen.writeStartObject();
+        jGen.writeStringField("value", ipv6Net.toString());
+        jGen.writeEndObject();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/IPv6Serializer.java b/src/main/java/net/onrc/onos/core/util/serializers/IPv6Serializer.java
index b165658..ed39fee 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/IPv6Serializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/IPv6Serializer.java
@@ -16,10 +16,10 @@
 
     @Override
     public void serialize(IPv6 ipv6, JsonGenerator jGen,
-			  SerializerProvider serializer)
-	throws IOException, JsonProcessingException {
-	jGen.writeStartObject();
-	jGen.writeStringField("value", ipv6.toString());
-	jGen.writeEndObject();
+                          SerializerProvider serializer)
+            throws IOException, JsonProcessingException {
+        jGen.writeStartObject();
+        jGen.writeStringField("value", ipv6.toString());
+        jGen.writeEndObject();
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java b/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java
index 3590f67..e78be58 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/KryoFactory.java
@@ -62,7 +62,7 @@
 
     /**
      * Default constructor.
-     *
+     * <p/>
      * Preallocates {@code DEFAULT_PREALLOCATIONS} Kryo instances.
      */
     public KryoFactory() {
@@ -89,7 +89,7 @@
      * @return the created Kryo object.
      */
     public Kryo newKryo() {
-	return newDeleteKryo(null);
+        return newDeleteKryo(null);
     }
 
     /**
@@ -98,34 +98,34 @@
      * @param deleteKryo the object to delete.
      */
     public void deleteKryo(Kryo deleteKryo) {
-	newDeleteKryo(deleteKryo);
+        newDeleteKryo(deleteKryo);
     }
 
     /**
      * Create or delete a Kryo object.
      *
      * @param deleteKryo if null, then allocate and return a new object,
-     * otherwise delete the provided object.
+     *                   otherwise delete the provided object.
      * @return a new Kryo object if needed, otherwise null.
      */
     synchronized private Kryo newDeleteKryo(Kryo deleteKryo) {
-	if (deleteKryo != null) {
-	    // Delete an entry by moving it back to the buffer
-	    kryoList.add(deleteKryo);
-	    return null;
-	} else {
-	    Kryo kryo = null;
-	    if (kryoList.isEmpty()) {
-		// Preallocate
-		for (int i = 0; i < 100; i++) {
-		    kryo = newKryoImpl();
-		    kryoList.add(kryo);
-		}
-	    }
+        if (deleteKryo != null) {
+            // Delete an entry by moving it back to the buffer
+            kryoList.add(deleteKryo);
+            return null;
+        } else {
+            Kryo kryo = null;
+            if (kryoList.isEmpty()) {
+                // Preallocate
+                for (int i = 0; i < 100; i++) {
+                    kryo = newKryoImpl();
+                    kryoList.add(kryo);
+                }
+            }
 
-	    kryo = kryoList.remove(kryoList.size() - 1);
-	    return kryo;
-	}
+            kryo = kryoList.remove(kryoList.size() - 1);
+            return kryo;
+        }
     }
 
     /**
@@ -134,91 +134,91 @@
      * @return the created Kryo object.
      */
     private Kryo newKryoImpl() {
-	Kryo kryo = new Kryo();
-	kryo.setRegistrationRequired(true);
-	//
-	// WARNING: Order of register() calls affects serialized bytes.
-	//  - Do no insert new entry in the middle, always add to the end.
-	//  - Do not simply remove existing entry
-	//
+        Kryo kryo = new Kryo();
+        kryo.setRegistrationRequired(true);
+        //
+        // WARNING: Order of register() calls affects serialized bytes.
+        //  - Do no insert new entry in the middle, always add to the end.
+        //  - Do not simply remove existing entry
+        //
 
-	// kryo.setReferences(false);
-	//
-	kryo.register(ArrayList.class);
+        // kryo.setReferences(false);
+        //
+        kryo.register(ArrayList.class);
 
-	// FlowPath and related classes
-	kryo.register(CallerId.class);
-	kryo.register(DataPath.class);
-	kryo.register(DataPathEndpoints.class);
-	kryo.register(Dpid.class);
-	kryo.register(FlowEntryAction.class);
-	kryo.register(FlowEntryAction.ActionEnqueue.class);
-	kryo.register(FlowEntryAction.ActionOutput.class);
-	kryo.register(FlowEntryAction.ActionSetEthernetAddr.class);
-	kryo.register(FlowEntryAction.ActionSetIpToS.class);
-	kryo.register(FlowEntryAction.ActionSetIPv4Addr.class);
-	kryo.register(FlowEntryAction.ActionSetTcpUdpPort.class);
-	kryo.register(FlowEntryAction.ActionSetVlanId.class);
-	kryo.register(FlowEntryAction.ActionSetVlanPriority.class);
-	kryo.register(FlowEntryAction.ActionStripVlan.class);
-	kryo.register(FlowEntryAction.ActionValues.class);
-	kryo.register(FlowEntryActions.class);
-	kryo.register(FlowEntryErrorState.class);
-	kryo.register(FlowEntryId.class);
-	kryo.register(FlowEntry.class);
-	kryo.register(FlowEntryMatch.class);
-	kryo.register(FlowEntryMatch.Field.class);
-	kryo.register(FlowEntrySwitchState.class);
-	kryo.register(FlowEntryUserState.class);
-	kryo.register(FlowId.class);
-	kryo.register(FlowPath.class);
-	kryo.register(FlowPathFlags.class);
-	kryo.register(FlowPathType.class);
-	kryo.register(FlowPathUserState.class);
-	kryo.register(IPv4.class);
-	kryo.register(IPv4Net.class);
-	kryo.register(IPv6.class);
-	kryo.register(IPv6Net.class);
-	kryo.register(byte[].class);
-	kryo.register(MACAddress.class);
-	kryo.register(Port.class);
-	kryo.register(Switch.class);
-	// kryo.register(SwitchPort.class);
+        // FlowPath and related classes
+        kryo.register(CallerId.class);
+        kryo.register(DataPath.class);
+        kryo.register(DataPathEndpoints.class);
+        kryo.register(Dpid.class);
+        kryo.register(FlowEntryAction.class);
+        kryo.register(FlowEntryAction.ActionEnqueue.class);
+        kryo.register(FlowEntryAction.ActionOutput.class);
+        kryo.register(FlowEntryAction.ActionSetEthernetAddr.class);
+        kryo.register(FlowEntryAction.ActionSetIpToS.class);
+        kryo.register(FlowEntryAction.ActionSetIPv4Addr.class);
+        kryo.register(FlowEntryAction.ActionSetTcpUdpPort.class);
+        kryo.register(FlowEntryAction.ActionSetVlanId.class);
+        kryo.register(FlowEntryAction.ActionSetVlanPriority.class);
+        kryo.register(FlowEntryAction.ActionStripVlan.class);
+        kryo.register(FlowEntryAction.ActionValues.class);
+        kryo.register(FlowEntryActions.class);
+        kryo.register(FlowEntryErrorState.class);
+        kryo.register(FlowEntryId.class);
+        kryo.register(FlowEntry.class);
+        kryo.register(FlowEntryMatch.class);
+        kryo.register(FlowEntryMatch.Field.class);
+        kryo.register(FlowEntrySwitchState.class);
+        kryo.register(FlowEntryUserState.class);
+        kryo.register(FlowId.class);
+        kryo.register(FlowPath.class);
+        kryo.register(FlowPathFlags.class);
+        kryo.register(FlowPathType.class);
+        kryo.register(FlowPathUserState.class);
+        kryo.register(IPv4.class);
+        kryo.register(IPv4Net.class);
+        kryo.register(IPv6.class);
+        kryo.register(IPv6Net.class);
+        kryo.register(byte[].class);
+        kryo.register(MACAddress.class);
+        kryo.register(Port.class);
+        kryo.register(Switch.class);
+        // kryo.register(SwitchPort.class);
 
-	// New data model-related classes
-	kryo.register(DeviceEvent.class);
-	kryo.register(InetAddress.class);
-	kryo.register(LinkEvent.class);
-	kryo.register(PortEvent.class);
-	kryo.register(PortEvent.SwitchPort.class);
-	kryo.register(SwitchEvent.class);
-	kryo.register(TopologyEvent.class);
+        // New data model-related classes
+        kryo.register(DeviceEvent.class);
+        kryo.register(InetAddress.class);
+        kryo.register(LinkEvent.class);
+        kryo.register(PortEvent.class);
+        kryo.register(PortEvent.SwitchPort.class);
+        kryo.register(SwitchEvent.class);
+        kryo.register(TopologyEvent.class);
 
-	// Intent-related classes
-	kryo.register(Path.class);
-	kryo.register(Intent.class);
-	kryo.register(Intent.IntentState.class);
-	kryo.register(PathIntent.class);
-	kryo.register(ShortestPathIntent.class);
-	kryo.register(ConstrainedShortestPathIntent.class);
-	kryo.register(ErrorIntent.class);
-	kryo.register(ErrorIntent.ErrorType.class);
-	kryo.register(IntentOperation.class);
-	kryo.register(IntentOperation.Operator.class);
-	kryo.register(IntentOperationList.class);
-	kryo.register(IntentStateList.class);
+        // Intent-related classes
+        kryo.register(Path.class);
+        kryo.register(Intent.class);
+        kryo.register(Intent.IntentState.class);
+        kryo.register(PathIntent.class);
+        kryo.register(ShortestPathIntent.class);
+        kryo.register(ConstrainedShortestPathIntent.class);
+        kryo.register(ErrorIntent.class);
+        kryo.register(ErrorIntent.ErrorType.class);
+        kryo.register(IntentOperation.class);
+        kryo.register(IntentOperation.Operator.class);
+        kryo.register(IntentOperationList.class);
+        kryo.register(IntentStateList.class);
 
-	// Device-related classes
-	kryo.register(HashSet.class);
-	kryo.register(Inet4Address.class);
-	kryo.register(OnosDevice.class);
-	kryo.register(Date.class);
+        // Device-related classes
+        kryo.register(HashSet.class);
+        kryo.register(Inet4Address.class);
+        kryo.register(OnosDevice.class);
+        kryo.register(Date.class);
 
-	// ProxyArp-related classes
-	kryo.register(BroadcastPacketOutNotification.class);
-	kryo.register(SinglePacketOutNotification.class);
-	kryo.register(ArpReplyNotification.class);
+        // ProxyArp-related classes
+        kryo.register(BroadcastPacketOutNotification.class);
+        kryo.register(SinglePacketOutNotification.class);
+        kryo.register(ArpReplyNotification.class);
 
-	return kryo;
+        return kryo;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/MACAddressDeserializer.java b/src/main/java/net/onrc/onos/core/util/serializers/MACAddressDeserializer.java
index 4ed31a5..45bc336 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/MACAddressDeserializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/MACAddressDeserializer.java
@@ -21,20 +21,20 @@
 
     @Override
     public MACAddress deserialize(JsonParser jp,
-				  DeserializationContext ctxt)
-	throws IOException, JsonProcessingException {
+                                  DeserializationContext ctxt)
+            throws IOException, JsonProcessingException {
 
-	MACAddress mac = null;
+        MACAddress mac = null;
 
-	jp.nextToken();		// Move to JsonToken.START_OBJECT
-	while (jp.nextToken() != JsonToken.END_OBJECT) {
-	    String fieldname = jp.getCurrentName();
-	    if ("value".equals(fieldname)) {
-		String value = jp.getText();
-		log.debug("Fieldname: {} Value: {}", fieldname, value);
-		mac = MACAddress.valueOf(value);
-	    }
-	}
-	return mac;
+        jp.nextToken();        // Move to JsonToken.START_OBJECT
+        while (jp.nextToken() != JsonToken.END_OBJECT) {
+            String fieldname = jp.getCurrentName();
+            if ("value".equals(fieldname)) {
+                String value = jp.getText();
+                log.debug("Fieldname: {} Value: {}", fieldname, value);
+                mac = MACAddress.valueOf(value);
+            }
+        }
+        return mac;
     }
 }
diff --git a/src/main/java/net/onrc/onos/core/util/serializers/MACAddressSerializer.java b/src/main/java/net/onrc/onos/core/util/serializers/MACAddressSerializer.java
index e57a777..f56ac0a 100644
--- a/src/main/java/net/onrc/onos/core/util/serializers/MACAddressSerializer.java
+++ b/src/main/java/net/onrc/onos/core/util/serializers/MACAddressSerializer.java
@@ -16,10 +16,10 @@
 
     @Override
     public void serialize(MACAddress mac, JsonGenerator jGen,
-			  SerializerProvider serializer)
-	throws IOException, JsonProcessingException {
-	jGen.writeStartObject();
-	jGen.writeStringField("value", mac.toString());
-	jGen.writeEndObject();
+                          SerializerProvider serializer)
+            throws IOException, JsonProcessingException {
+        jGen.writeStartObject();
+        jGen.writeStringField("value", mac.toString());
+        jGen.writeEndObject();
     }
 }