src/main/java/net/onrc/onos/core/devicemanager/OnosDeviceManager.java - spring-open - Gitiles

 package net.onrc.onos.core.devicemanager;

 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;

 import net.floodlightcontroller.core.FloodlightContext;
 import net.floodlightcontroller.core.IFloodlightProviderService;
 import net.floodlightcontroller.core.IOFMessageListener;
 import net.floodlightcontroller.core.IOFSwitch;
 import net.floodlightcontroller.core.IUpdate;
 import net.floodlightcontroller.core.module.FloodlightModuleContext;
 import net.floodlightcontroller.core.module.FloodlightModuleException;
 import net.floodlightcontroller.core.module.IFloodlightModule;
 import net.floodlightcontroller.core.module.IFloodlightService;
 import net.floodlightcontroller.util.MACAddress;
 import net.onrc.onos.core.datagrid.IDatagridService;
 import net.onrc.onos.core.datagrid.IEventChannel;
 import net.onrc.onos.core.datagrid.IEventChannelListener;
 import net.onrc.onos.core.packet.Ethernet;
 import net.onrc.onos.core.topology.ITopologyService;
 import net.onrc.onos.core.topology.Topology;

 import org.openflow.protocol.OFMessage;
 import org.openflow.protocol.OFPacketIn;
 import org.openflow.protocol.OFType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 public class OnosDeviceManager implements IFloodlightModule,
         IOFMessageListener,
         IOnosDeviceService,
         IEventChannelListener<Long, OnosDevice> {

     private static final Logger log = LoggerFactory.getLogger(OnosDeviceManager.class);
     private static final long DEVICE_CLEANING_INITIAL_DELAY = 30;
     private int cleanupSecondConfig = 60 * 60;
     private int agingMillisecConfig = 60 * 60 * 1000;

     private CopyOnWriteArrayList<IOnosDeviceListener> deviceListeners;
     private IFloodlightProviderService floodlightProvider;
     private static final ScheduledExecutorService EXECUTOR_SERVICE =
             Executors.newSingleThreadScheduledExecutor();

     // TODO This infrastructure maintains a global device cache in the
     // OnosDeviceManager module on each instance (in mapDevice). We want to
     // remove this eventually - the global cache should be maintained by the
     // topology layer (which it currently is as well).
     private IDatagridService datagrid;
     private IEventChannel<Long, OnosDevice> eventChannel;
     private static final String DEVICE_CHANNEL_NAME = "onos.device";
     private final Map<Long, OnosDevice> mapDevice =
             new ConcurrentHashMap<Long, OnosDevice>();

     private ITopologyService topologyService;
     private Topology topology;

     public enum OnosDeviceUpdateType {
         ADD, DELETE, UPDATE;
     }

     private class OnosDeviceUpdate implements IUpdate {
         private final OnosDevice device;
         private final OnosDeviceUpdateType 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 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 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) &&
                 (msg instanceof OFPacketIn)) {
             OFPacketIn pi = (OFPacketIn) msg;

             Ethernet eth = IFloodlightProviderService.bcStore.
                     get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);

             return processPacketIn(sw, pi, eth);
         }

         return Command.CONTINUE;
     }

     // This "protected" modifier is for unit test.
     // The above "receive" method couldn't be tested
     // because of IFloodlightProviderService static final field.
     protected 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;
         }

         // We check if it is the same device in datagrid to suppress the device update
         OnosDevice exDev = mapDevice.get(mac);
         if (exDev != null && exDev.equals(srcDevice)) {
             // There is the same existing device. Update only ActiveSince time.
             // TODO This doesn't update the timestamp in the Topology module,
             // only in the local cache in this local driver module.
             exDev.setLastSeenTimestamp(new Date());
             if (log.isTraceEnabled()) {
                 log.trace("In the local cache, there is the same device."
                         + " Only update last seen time: {}", exDev);
             }
             return Command.CONTINUE;
         }

         // If the switch port we try to attach a new device already has a link,
         // then don't add the device
         // TODO We probably don't need to check this here, it should be done in
         // the Topology module.
         if (topology.getOutgoingLink(dpid, (long) portId) != null) {
             if (log.isTraceEnabled()) {
                 log.trace("Stop adding OnosDevice {} as " +
                         "there is a link on the port: dpid {} port {}",
                         srcDevice.getMacAddress(), dpid, portId);
             }
             return Command.CONTINUE;
         }

         addOnosDevice(mac, srcDevice);

         if (log.isTraceEnabled()) {
             log.trace("Add device info: {}", srcDevice);
         }
         return Command.CONTINUE;
     }

     // Thread to delete devices periodically.
     // Remove all devices from the map first and then finally delete devices
     // from the DB.

     // TODO This should be sharded based on device 'owner' (i.e. the instance
     // that owns the switch it is attached to). Currently any instance can
     // issue deletes for any device, which permits race conditions and could
     // cause the Topology replicas to diverge.
     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()
                             > agingMillisecConfig)) {
                         if (log.isTraceEnabled()) {
                             log.debug("Removing device info from the datagrid: {}, diff {}",
                                     dev, now - dev.getLastSeenTimestamp().getTime());
                         }
                         deleteSet.add(dev);
                     }
                 }

                 for (OnosDevice dev : deleteSet) {
                     deleteOnosDevice(dev);
                 }
             } catch (Exception e) {
                 // Any exception thrown by the task will prevent the Executor
                 // from running the next iteration, so we need to catch and log
                 // all exceptions here.
                 log.error("Exception in device cleanup thread:", e);
             }
         }
     }

     /**
      * Parse a device from an {@link Ethernet} packet.
      *
      * @param eth the packet to parse
      * @param swdpid the switch on which the packet arrived
      * @param port the port on which the packet arrived
      * @return the device from the packet
      */
     protected OnosDevice getSourceDeviceFromPacket(Ethernet eth,
             long swdpid,
             short port) {
         MACAddress sourceMac = eth.getSourceMAC();

         // Ignore broadcast/multicast source
         if (sourceMac.isBroadcast() || sourceMac.isBroadcast()) {
             return null;
         }

         short vlan = eth.getVlanID();
         return new OnosDevice(sourceMac,
                 ((vlan >= 0) ? vlan : 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(ITopologyService.class);
         dependencies.add(IDatagridService.class);
         return dependencies;
     }

     @Override
     public void init(FloodlightModuleContext context)
             throws FloodlightModuleException {
         floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
         deviceListeners = new CopyOnWriteArrayList<IOnosDeviceListener>();
         datagrid = context.getServiceImpl(IDatagridService.class);
         topologyService = context.getServiceImpl(ITopologyService.class);
         topology = topologyService.getTopology();

         setOnosDeviceManagerProperty(context);
     }

     @Override
     public void startUp(FloodlightModuleContext context) {
         floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this);
         eventChannel = datagrid.addListener(DEVICE_CHANNEL_NAME, this,
                 Long.class,
                 OnosDevice.class);
         EXECUTOR_SERVICE.scheduleAtFixedRate(new CleanDevice(),
                 DEVICE_CLEANING_INITIAL_DELAY, cleanupSecondConfig, TimeUnit.SECONDS);
     }

     @Override
     public void deleteOnosDevice(OnosDevice dev) {
         Long mac = dev.getMacAddress().toLong();
         eventChannel.removeEntry(mac);
         floodlightProvider.publishUpdate(
                 new OnosDeviceUpdate(dev, OnosDeviceUpdateType.DELETE));
     }

     @Override
     public void deleteOnosDeviceByMac(MACAddress mac) {
         OnosDevice deleteDevice = mapDevice.get(mac.toLong());
         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 into local Cache: device mac {}", mac);
     }

     @Override
     public void entryRemoved(OnosDevice dev) {
         Long mac = dev.getMacAddress().toLong();
         mapDevice.remove(mac);
         log.debug("Device removed into local Cache: device mac {}", mac);
     }

     @Override
     public void entryUpdated(OnosDevice dev) {
         Long mac = dev.getMacAddress().toLong();
         mapDevice.put(mac, dev);
         log.debug("Device updated into local Cache: device mac {}", mac);
     }

     @Override
     public void addOnosDeviceListener(IOnosDeviceListener listener) {
         deviceListeners.add(listener);
     }

     @Override
     public void deleteOnosDeviceListener(IOnosDeviceListener listener) {
         deviceListeners.remove(listener);
     }

     private void setOnosDeviceManagerProperty(FloodlightModuleContext context) {
         Map<String, String> configOptions = context.getConfigParams(this);
         String cleanupsec = configOptions.get("cleanupsec");
         String agingmsec = configOptions.get("agingmsec");
         if (cleanupsec != null) {
             cleanupSecondConfig = Integer.parseInt(cleanupsec);
             log.debug("CLEANUP_SECOND is set to {}", cleanupSecondConfig);
         }

         if (agingmsec != null) {
             agingMillisecConfig = Integer.parseInt(agingmsec);
             log.debug("AGEING_MILLSEC is set to {}", agingMillisecConfig);
         }
     }
 }
	package net.onrc.onos.core.devicemanager;

	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Date;
	import java.util.HashMap;
	import java.util.HashSet;
	import java.util.List;
	import java.util.Map;
	import java.util.Set;
	import java.util.concurrent.ConcurrentHashMap;
	import java.util.concurrent.CopyOnWriteArrayList;
	import java.util.concurrent.Executors;
	import java.util.concurrent.ScheduledExecutorService;
	import java.util.concurrent.TimeUnit;

	import net.floodlightcontroller.core.FloodlightContext;
	import net.floodlightcontroller.core.IFloodlightProviderService;
	import net.floodlightcontroller.core.IOFMessageListener;
	import net.floodlightcontroller.core.IOFSwitch;
	import net.floodlightcontroller.core.IUpdate;
	import net.floodlightcontroller.core.module.FloodlightModuleContext;
	import net.floodlightcontroller.core.module.FloodlightModuleException;
	import net.floodlightcontroller.core.module.IFloodlightModule;
	import net.floodlightcontroller.core.module.IFloodlightService;
	import net.floodlightcontroller.util.MACAddress;
	import net.onrc.onos.core.datagrid.IDatagridService;
	import net.onrc.onos.core.datagrid.IEventChannel;
	import net.onrc.onos.core.datagrid.IEventChannelListener;
	import net.onrc.onos.core.packet.Ethernet;
	import net.onrc.onos.core.topology.ITopologyService;
	import net.onrc.onos.core.topology.Topology;

	import org.openflow.protocol.OFMessage;
	import org.openflow.protocol.OFPacketIn;
	import org.openflow.protocol.OFType;
	import org.slf4j.Logger;
	import org.slf4j.LoggerFactory;

	public class OnosDeviceManager implements IFloodlightModule,
	IOFMessageListener,
	IOnosDeviceService,
	IEventChannelListener<Long, OnosDevice> {

	private static final Logger log = LoggerFactory.getLogger(OnosDeviceManager.class);
	private static final long DEVICE_CLEANING_INITIAL_DELAY = 30;
	private int cleanupSecondConfig = 60 * 60;
	private int agingMillisecConfig = 60 * 60 * 1000;

	private CopyOnWriteArrayList<IOnosDeviceListener> deviceListeners;
	private IFloodlightProviderService floodlightProvider;
	private static final ScheduledExecutorService EXECUTOR_SERVICE =
	Executors.newSingleThreadScheduledExecutor();

	// TODO This infrastructure maintains a global device cache in the
	// OnosDeviceManager module on each instance (in mapDevice). We want to
	// remove this eventually - the global cache should be maintained by the
	// topology layer (which it currently is as well).
	private IDatagridService datagrid;
	private IEventChannel<Long, OnosDevice> eventChannel;
	private static final String DEVICE_CHANNEL_NAME = "onos.device";
	private final Map<Long, OnosDevice> mapDevice =
	new ConcurrentHashMap<Long, OnosDevice>();

	private ITopologyService topologyService;
	private Topology topology;

	public enum OnosDeviceUpdateType {
	ADD, DELETE, UPDATE;
	}

	private class OnosDeviceUpdate implements IUpdate {
	private final OnosDevice device;
	private final OnosDeviceUpdateType 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 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 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) &&
	(msg instanceof OFPacketIn)) {
	OFPacketIn pi = (OFPacketIn) msg;

	Ethernet eth = IFloodlightProviderService.bcStore.
	get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);

	return processPacketIn(sw, pi, eth);
	}

	return Command.CONTINUE;
	}

	// This "protected" modifier is for unit test.
	// The above "receive" method couldn't be tested
	// because of IFloodlightProviderService static final field.
	protected 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;
	}

	// We check if it is the same device in datagrid to suppress the device update
	OnosDevice exDev = mapDevice.get(mac);
	if (exDev != null && exDev.equals(srcDevice)) {
	// There is the same existing device. Update only ActiveSince time.
	// TODO This doesn't update the timestamp in the Topology module,
	// only in the local cache in this local driver module.
	exDev.setLastSeenTimestamp(new Date());
	if (log.isTraceEnabled()) {
	log.trace("In the local cache, there is the same device."
	+ " Only update last seen time: {}", exDev);
	}
	return Command.CONTINUE;
	}

	// If the switch port we try to attach a new device already has a link,
	// then don't add the device
	// TODO We probably don't need to check this here, it should be done in
	// the Topology module.
	if (topology.getOutgoingLink(dpid, (long) portId) != null) {
	if (log.isTraceEnabled()) {
	log.trace("Stop adding OnosDevice {} as " +
	"there is a link on the port: dpid {} port {}",
	srcDevice.getMacAddress(), dpid, portId);
	}
	return Command.CONTINUE;
	}

	addOnosDevice(mac, srcDevice);

	if (log.isTraceEnabled()) {
	log.trace("Add device info: {}", srcDevice);
	}
	return Command.CONTINUE;
	}

	// Thread to delete devices periodically.
	// Remove all devices from the map first and then finally delete devices
	// from the DB.

	// TODO This should be sharded based on device 'owner' (i.e. the instance
	// that owns the switch it is attached to). Currently any instance can
	// issue deletes for any device, which permits race conditions and could
	// cause the Topology replicas to diverge.
	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()
	> agingMillisecConfig)) {
	if (log.isTraceEnabled()) {
	log.debug("Removing device info from the datagrid: {}, diff {}",
	dev, now - dev.getLastSeenTimestamp().getTime());
	}
	deleteSet.add(dev);
	}
	}

	for (OnosDevice dev : deleteSet) {
	deleteOnosDevice(dev);
	}
	} catch (Exception e) {
	// Any exception thrown by the task will prevent the Executor
	// from running the next iteration, so we need to catch and log
	// all exceptions here.
	log.error("Exception in device cleanup thread:", e);
	}
	}
	}

	/**
	* Parse a device from an {@link Ethernet} packet.
	*
	* @param eth the packet to parse
	* @param swdpid the switch on which the packet arrived
	* @param port the port on which the packet arrived
	* @return the device from the packet
	*/
	protected OnosDevice getSourceDeviceFromPacket(Ethernet eth,
	long swdpid,
	short port) {
	MACAddress sourceMac = eth.getSourceMAC();

	// Ignore broadcast/multicast source
	if (sourceMac.isBroadcast() \|\| sourceMac.isBroadcast()) {
	return null;
	}

	short vlan = eth.getVlanID();
	return new OnosDevice(sourceMac,
	((vlan >= 0) ? vlan : 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(ITopologyService.class);
	dependencies.add(IDatagridService.class);
	return dependencies;
	}

	@Override
	public void init(FloodlightModuleContext context)
	throws FloodlightModuleException {
	floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
	deviceListeners = new CopyOnWriteArrayList<IOnosDeviceListener>();
	datagrid = context.getServiceImpl(IDatagridService.class);
	topologyService = context.getServiceImpl(ITopologyService.class);
	topology = topologyService.getTopology();

	setOnosDeviceManagerProperty(context);
	}

	@Override
	public void startUp(FloodlightModuleContext context) {
	floodlightProvider.addOFMessageListener(OFType.PACKET_IN, this);
	eventChannel = datagrid.addListener(DEVICE_CHANNEL_NAME, this,
	Long.class,
	OnosDevice.class);
	EXECUTOR_SERVICE.scheduleAtFixedRate(new CleanDevice(),
	DEVICE_CLEANING_INITIAL_DELAY, cleanupSecondConfig, TimeUnit.SECONDS);
	}

	@Override
	public void deleteOnosDevice(OnosDevice dev) {
	Long mac = dev.getMacAddress().toLong();
	eventChannel.removeEntry(mac);
	floodlightProvider.publishUpdate(
	new OnosDeviceUpdate(dev, OnosDeviceUpdateType.DELETE));
	}

	@Override
	public void deleteOnosDeviceByMac(MACAddress mac) {
	OnosDevice deleteDevice = mapDevice.get(mac.toLong());
	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 into local Cache: device mac {}", mac);
	}

	@Override
	public void entryRemoved(OnosDevice dev) {
	Long mac = dev.getMacAddress().toLong();
	mapDevice.remove(mac);
	log.debug("Device removed into local Cache: device mac {}", mac);
	}

	@Override
	public void entryUpdated(OnosDevice dev) {
	Long mac = dev.getMacAddress().toLong();
	mapDevice.put(mac, dev);
	log.debug("Device updated into local Cache: device mac {}", mac);
	}

	@Override
	public void addOnosDeviceListener(IOnosDeviceListener listener) {
	deviceListeners.add(listener);
	}

	@Override
	public void deleteOnosDeviceListener(IOnosDeviceListener listener) {
	deviceListeners.remove(listener);
	}

	private void setOnosDeviceManagerProperty(FloodlightModuleContext context) {
	Map<String, String> configOptions = context.getConfigParams(this);
	String cleanupsec = configOptions.get("cleanupsec");
	String agingmsec = configOptions.get("agingmsec");
	if (cleanupsec != null) {
	cleanupSecondConfig = Integer.parseInt(cleanupsec);
	log.debug("CLEANUP_SECOND is set to {}", cleanupSecondConfig);
	}

	if (agingmsec != null) {
	agingMillisecConfig = Integer.parseInt(agingmsec);
	log.debug("AGEING_MILLSEC is set to {}", agingMillisecConfig);
	}
	}
	}