Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 1 | package net.onrc.onos.ofcontroller.flowmanager; |
| 2 | |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 3 | import java.util.ArrayList; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 4 | import java.util.Collection; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 5 | import java.util.HashMap; |
| 6 | import java.util.Iterator; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 7 | import java.util.LinkedList; |
| 8 | import java.util.List; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 9 | import java.util.Map; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 10 | import java.util.concurrent.BlockingQueue; |
| 11 | import java.util.concurrent.LinkedBlockingQueue; |
| 12 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 13 | import net.floodlightcontroller.core.IOFSwitch; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 14 | import net.onrc.onos.datagrid.IDatagridService; |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 15 | import net.onrc.onos.ofcontroller.topology.Topology; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 16 | import net.onrc.onos.ofcontroller.topology.TopologyElement; |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 17 | import net.onrc.onos.ofcontroller.topology.TopologyManager; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 18 | import net.onrc.onos.ofcontroller.util.DataPath; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 19 | import net.onrc.onos.ofcontroller.util.EventEntry; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 20 | import net.onrc.onos.ofcontroller.util.FlowEntry; |
| 21 | import net.onrc.onos.ofcontroller.util.FlowEntryAction; |
| 22 | import net.onrc.onos.ofcontroller.util.FlowEntryActions; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 23 | import net.onrc.onos.ofcontroller.util.FlowEntryId; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 24 | import net.onrc.onos.ofcontroller.util.FlowEntryMatch; |
| 25 | import net.onrc.onos.ofcontroller.util.FlowEntrySwitchState; |
| 26 | import net.onrc.onos.ofcontroller.util.FlowEntryUserState; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 27 | import net.onrc.onos.ofcontroller.util.FlowId; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 28 | import net.onrc.onos.ofcontroller.util.FlowPath; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 29 | import net.onrc.onos.ofcontroller.util.FlowPathUserState; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 30 | |
| 31 | import org.slf4j.Logger; |
| 32 | import org.slf4j.LoggerFactory; |
| 33 | |
| 34 | /** |
Yuta HIGUCHI | e1038fb | 2013-10-30 15:35:18 -0700 | [diff] [blame] | 35 | * Class for FlowPath Maintenance. |
| 36 | * This class listens for FlowEvents to: |
| 37 | * - Maintain a local cache of the Network Topology. |
| 38 | * - Detect FlowPaths impacted by Topology change. |
| 39 | * - Recompute impacted FlowPath using cached Topology. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 40 | */ |
Pavlin Radoslavov | 9a85902 | 2013-10-30 10:08:24 -0700 | [diff] [blame] | 41 | class FlowEventHandler extends Thread implements IFlowEventHandlerService { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 42 | /** The logger. */ |
Pavlin Radoslavov | 9a85902 | 2013-10-30 10:08:24 -0700 | [diff] [blame] | 43 | private final static Logger log = LoggerFactory.getLogger(FlowEventHandler.class); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 44 | |
| 45 | private FlowManager flowManager; // The Flow Manager to use |
| 46 | private IDatagridService datagridService; // The Datagrid Service to use |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 47 | private Topology topology; // The network topology |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 48 | |
| 49 | // The queue with Flow Path and Topology Element updates |
| 50 | private BlockingQueue<EventEntry<?>> networkEvents = |
| 51 | new LinkedBlockingQueue<EventEntry<?>>(); |
| 52 | |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 53 | // The pending Topology, FlowPath, and FlowEntry events |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 54 | private List<EventEntry<TopologyElement>> topologyEvents = |
| 55 | new LinkedList<EventEntry<TopologyElement>>(); |
| 56 | private List<EventEntry<FlowPath>> flowPathEvents = |
| 57 | new LinkedList<EventEntry<FlowPath>>(); |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 58 | private List<EventEntry<FlowEntry>> flowEntryEvents = |
| 59 | new LinkedList<EventEntry<FlowEntry>>(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 60 | |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 61 | // All internally computed Flow Paths |
| 62 | private Map<Long, FlowPath> allFlowPaths = new HashMap<Long, FlowPath>(); |
| 63 | |
| 64 | // The Flow Entries received as notifications with unmatched Flow Paths |
| 65 | private Map<Long, FlowEntry> unmatchedFlowEntryAdd = |
| 66 | new HashMap<Long, FlowEntry>(); |
| 67 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 68 | // |
| 69 | // Transient state for processing the Flow Paths: |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 70 | // - The Flow Paths that should be recomputed |
| 71 | // - The Flow Paths with modified Flow Entries |
| 72 | // |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 73 | private Map<Long, FlowPath> shouldRecomputeFlowPaths = |
| 74 | new HashMap<Long, FlowPath>(); |
| 75 | private Map<Long, FlowPath> modifiedFlowPaths = |
| 76 | new HashMap<Long, FlowPath>(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 77 | |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 78 | /** |
| 79 | * Constructor for a given Flow Manager and Datagrid Service. |
| 80 | * |
| 81 | * @param flowManager the Flow Manager to use. |
| 82 | * @param datagridService the Datagrid Service to use. |
| 83 | */ |
Pavlin Radoslavov | 9a85902 | 2013-10-30 10:08:24 -0700 | [diff] [blame] | 84 | FlowEventHandler(FlowManager flowManager, |
| 85 | IDatagridService datagridService) { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 86 | this.flowManager = flowManager; |
| 87 | this.datagridService = datagridService; |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 88 | this.topology = new Topology(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | /** |
Pavlin Radoslavov | ed0f4a8 | 2013-11-04 16:38:36 -0800 | [diff] [blame] | 92 | * Get the network topology. |
| 93 | * |
| 94 | * @return the network topology. |
| 95 | */ |
| 96 | protected Topology getTopology() { return this.topology; } |
| 97 | |
| 98 | /** |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 99 | * Startup processing. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 100 | */ |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 101 | private void startup() { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 102 | // |
| 103 | // Obtain the initial Topology state |
| 104 | // |
| 105 | Collection<TopologyElement> topologyElements = |
| 106 | datagridService.getAllTopologyElements(); |
| 107 | for (TopologyElement topologyElement : topologyElements) { |
| 108 | EventEntry<TopologyElement> eventEntry = |
| 109 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 110 | topologyEvents.add(eventEntry); |
| 111 | } |
| 112 | // |
| 113 | // Obtain the initial Flow Path state |
| 114 | // |
| 115 | Collection<FlowPath> flowPaths = datagridService.getAllFlows(); |
| 116 | for (FlowPath flowPath : flowPaths) { |
| 117 | EventEntry<FlowPath> eventEntry = |
| 118 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 119 | flowPathEvents.add(eventEntry); |
| 120 | } |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 121 | // |
| 122 | // Obtain the initial FlowEntry state |
| 123 | // |
| 124 | Collection<FlowEntry> flowEntries = datagridService.getAllFlowEntries(); |
| 125 | for (FlowEntry flowEntry : flowEntries) { |
| 126 | EventEntry<FlowEntry> eventEntry = |
| 127 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_ADD, flowEntry); |
| 128 | flowEntryEvents.add(eventEntry); |
| 129 | } |
| 130 | |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 131 | // Process the initial events (if any) |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 132 | processEvents(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Run the thread. |
| 137 | */ |
| 138 | @Override |
| 139 | public void run() { |
| 140 | startup(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 141 | |
| 142 | // |
| 143 | // The main loop |
| 144 | // |
| 145 | Collection<EventEntry<?>> collection = new LinkedList<EventEntry<?>>(); |
| 146 | try { |
| 147 | while (true) { |
| 148 | EventEntry<?> eventEntry = networkEvents.take(); |
| 149 | collection.add(eventEntry); |
| 150 | networkEvents.drainTo(collection); |
| 151 | |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 152 | // |
| 153 | // Demultiplex all events: |
| 154 | // - EventEntry<TopologyElement> |
| 155 | // - EventEntry<FlowPath> |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 156 | // - EventEntry<FlowEntry> |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 157 | // |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 158 | for (EventEntry<?> event : collection) { |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame] | 159 | // Topology event |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 160 | if (event.eventData() instanceof TopologyElement) { |
| 161 | EventEntry<TopologyElement> topologyEventEntry = |
| 162 | (EventEntry<TopologyElement>)event; |
| 163 | topologyEvents.add(topologyEventEntry); |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame] | 164 | continue; |
| 165 | } |
| 166 | |
| 167 | // FlowPath event |
| 168 | if (event.eventData() instanceof FlowPath) { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 169 | EventEntry<FlowPath> flowPathEventEntry = |
| 170 | (EventEntry<FlowPath>)event; |
| 171 | flowPathEvents.add(flowPathEventEntry); |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame] | 172 | continue; |
| 173 | } |
| 174 | |
| 175 | // FlowEntry event |
| 176 | if (event.eventData() instanceof FlowEntry) { |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 177 | EventEntry<FlowEntry> flowEntryEventEntry = |
| 178 | (EventEntry<FlowEntry>)event; |
| 179 | flowEntryEvents.add(flowEntryEventEntry); |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame] | 180 | continue; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 181 | } |
| 182 | } |
| 183 | collection.clear(); |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 184 | |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 185 | // Process the events (if any) |
| 186 | processEvents(); |
| 187 | } |
| 188 | } catch (Exception exception) { |
| 189 | log.debug("Exception processing Network Events: ", exception); |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Process the events (if any) |
| 195 | */ |
| 196 | private void processEvents() { |
Pavlin Radoslavov | afc4aa9 | 2013-12-04 12:44:23 -0800 | [diff] [blame^] | 197 | Collection<FlowEntry> modifiedFlowEntries; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 198 | |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 199 | if (topologyEvents.isEmpty() && flowPathEvents.isEmpty() && |
| 200 | flowEntryEvents.isEmpty()) { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 201 | return; // Nothing to do |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 202 | } |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 203 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 204 | processFlowPathEvents(); |
| 205 | processTopologyEvents(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 206 | processFlowEntryEvents(); |
| 207 | |
| 208 | // Recompute all affected Flow Paths and keep only the modified |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 209 | for (FlowPath flowPath : shouldRecomputeFlowPaths.values()) { |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 210 | if (recomputeFlowPath(flowPath)) |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 211 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 212 | } |
| 213 | |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 214 | // Extract the modified Flow Entries |
Pavlin Radoslavov | afc4aa9 | 2013-12-04 12:44:23 -0800 | [diff] [blame^] | 215 | modifiedFlowEntries = extractModifiedFlowEntries(modifiedFlowPaths.values()); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 216 | |
| 217 | // Assign missing Flow Entry IDs |
| 218 | assignFlowEntryId(modifiedFlowEntries); |
| 219 | |
| 220 | // |
| 221 | // Push the modified Flow Entries to switches, datagrid and database |
| 222 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 223 | flowManager.pushModifiedFlowEntriesToSwitches(modifiedFlowEntries); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 224 | flowManager.pushModifiedFlowEntriesToDatagrid(modifiedFlowEntries); |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 225 | flowManager.pushModifiedFlowPathsToDatabase(modifiedFlowPaths.values()); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 226 | |
| 227 | // |
| 228 | // Remove Flow Entries that were deleted |
| 229 | // |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 230 | for (FlowPath flowPath : modifiedFlowPaths.values()) |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 231 | flowPath.dataPath().removeDeletedFlowEntries(); |
| 232 | |
| 233 | // Cleanup |
| 234 | topologyEvents.clear(); |
| 235 | flowPathEvents.clear(); |
| 236 | flowEntryEvents.clear(); |
| 237 | // |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 238 | shouldRecomputeFlowPaths.clear(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 239 | modifiedFlowPaths.clear(); |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * Extract the modified Flow Entries. |
Pavlin Radoslavov | afc4aa9 | 2013-12-04 12:44:23 -0800 | [diff] [blame^] | 244 | * |
| 245 | * @param modifiedFlowPaths the Flow Paths to process. |
| 246 | * @return a collection with the modified Flow Entries. |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 247 | */ |
Pavlin Radoslavov | afc4aa9 | 2013-12-04 12:44:23 -0800 | [diff] [blame^] | 248 | private Collection<FlowEntry> extractModifiedFlowEntries( |
| 249 | Collection<FlowPath> modifiedFlowPaths) { |
| 250 | List<FlowEntry> modifiedFlowEntries = new LinkedList<FlowEntry>(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 251 | |
| 252 | // Extract only the modified Flow Entries |
Pavlin Radoslavov | afc4aa9 | 2013-12-04 12:44:23 -0800 | [diff] [blame^] | 253 | for (FlowPath flowPath : modifiedFlowPaths) { |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 254 | for (FlowEntry flowEntry : flowPath.flowEntries()) { |
| 255 | if (flowEntry.flowEntrySwitchState() == |
| 256 | FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED) { |
Pavlin Radoslavov | afc4aa9 | 2013-12-04 12:44:23 -0800 | [diff] [blame^] | 257 | modifiedFlowEntries.add(flowEntry); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 258 | } |
| 259 | } |
| 260 | } |
| 261 | return modifiedFlowEntries; |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * Assign the Flow Entry ID as needed. |
Pavlin Radoslavov | afc4aa9 | 2013-12-04 12:44:23 -0800 | [diff] [blame^] | 266 | * |
| 267 | * @param modifiedFlowEnries the collection of Flow Entries that need |
| 268 | * Flow Entry ID assigned. |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 269 | */ |
Pavlin Radoslavov | afc4aa9 | 2013-12-04 12:44:23 -0800 | [diff] [blame^] | 270 | private void assignFlowEntryId(Collection<FlowEntry> modifiedFlowEntries) { |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 271 | if (modifiedFlowEntries.isEmpty()) |
| 272 | return; |
| 273 | |
| 274 | Map<Long, IOFSwitch> mySwitches = flowManager.getMySwitches(); |
| 275 | |
| 276 | // |
| 277 | // Assign the Flow Entry ID only for Flow Entries for my switches |
| 278 | // |
Pavlin Radoslavov | afc4aa9 | 2013-12-04 12:44:23 -0800 | [diff] [blame^] | 279 | for (FlowEntry flowEntry : modifiedFlowEntries) { |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 280 | IOFSwitch mySwitch = mySwitches.get(flowEntry.dpid().value()); |
| 281 | if (mySwitch == null) |
| 282 | continue; |
| 283 | if (! flowEntry.isValidFlowEntryId()) { |
| 284 | long id = flowManager.getNextFlowEntryId(); |
| 285 | flowEntry.setFlowEntryId(new FlowEntryId(id)); |
| 286 | } |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | /** |
| 291 | * Process the Flow Path events. |
| 292 | */ |
| 293 | private void processFlowPathEvents() { |
| 294 | // |
| 295 | // Process all Flow Path events and update the appropriate state |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 296 | // |
| 297 | for (EventEntry<FlowPath> eventEntry : flowPathEvents) { |
| 298 | FlowPath flowPath = eventEntry.eventData(); |
| 299 | |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 300 | log.debug("Flow Event: {} {}", eventEntry.eventType(), |
| 301 | flowPath.toString()); |
| 302 | |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 303 | switch (eventEntry.eventType()) { |
| 304 | case ENTRY_ADD: { |
| 305 | // |
| 306 | // Add a new Flow Path |
| 307 | // |
| 308 | if (allFlowPaths.get(flowPath.flowId().value()) != null) { |
| 309 | // |
| 310 | // TODO: What to do if the Flow Path already exists? |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 311 | // Fow now, we just re-add it. |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 312 | // |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | switch (flowPath.flowPathType()) { |
| 316 | case FP_TYPE_SHORTEST_PATH: |
| 317 | // |
| 318 | // Reset the Data Path, in case it was set already, because |
| 319 | // we are going to recompute it anyway. |
| 320 | // |
| 321 | flowPath.flowEntries().clear(); |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 322 | shouldRecomputeFlowPaths.put(flowPath.flowId().value(), |
| 323 | flowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 324 | break; |
| 325 | case FP_TYPE_EXPLICIT_PATH: |
| 326 | // |
| 327 | // Mark all Flow Entries for installation in the switches. |
| 328 | // |
| 329 | for (FlowEntry flowEntry : flowPath.flowEntries()) { |
| 330 | flowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 331 | } |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 332 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 333 | break; |
| 334 | } |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 335 | allFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 336 | |
| 337 | break; |
| 338 | } |
| 339 | |
| 340 | case ENTRY_REMOVE: { |
| 341 | // |
| 342 | // Remove an existing Flow Path. |
| 343 | // |
| 344 | // Find the Flow Path, and mark the Flow and its Flow Entries |
| 345 | // for deletion. |
| 346 | // |
| 347 | FlowPath existingFlowPath = |
| 348 | allFlowPaths.get(flowPath.flowId().value()); |
| 349 | if (existingFlowPath == null) |
| 350 | continue; // Nothing to do |
| 351 | |
| 352 | existingFlowPath.setFlowPathUserState(FlowPathUserState.FP_USER_DELETE); |
| 353 | for (FlowEntry flowEntry : existingFlowPath.flowEntries()) { |
| 354 | flowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 355 | flowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 356 | } |
| 357 | |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 358 | // Remove the Flow Path from the internal state |
| 359 | Long key = existingFlowPath.flowId().value(); |
| 360 | allFlowPaths.remove(key); |
| 361 | shouldRecomputeFlowPaths.remove(key); |
| 362 | modifiedFlowPaths.put(key, existingFlowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 363 | |
| 364 | break; |
| 365 | } |
| 366 | } |
| 367 | } |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 368 | } |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 369 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 370 | /** |
| 371 | * Process the Topology events. |
| 372 | */ |
| 373 | private void processTopologyEvents() { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 374 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 375 | // Process all Topology events and update the appropriate state |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 376 | // |
| 377 | boolean isTopologyModified = false; |
| 378 | for (EventEntry<TopologyElement> eventEntry : topologyEvents) { |
| 379 | TopologyElement topologyElement = eventEntry.eventData(); |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 380 | |
| 381 | log.debug("Topology Event: {} {}", eventEntry.eventType(), |
| 382 | topologyElement.toString()); |
| 383 | |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 384 | switch (eventEntry.eventType()) { |
| 385 | case ENTRY_ADD: |
Yuta HIGUCHI | b32f77f | 2013-10-30 15:36:32 -0700 | [diff] [blame] | 386 | isTopologyModified |= topology.addTopologyElement(topologyElement); |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 387 | break; |
| 388 | case ENTRY_REMOVE: |
Yuta HIGUCHI | b32f77f | 2013-10-30 15:36:32 -0700 | [diff] [blame] | 389 | isTopologyModified |= topology.removeTopologyElement(topologyElement); |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 390 | break; |
| 391 | } |
| 392 | } |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 393 | if (isTopologyModified) { |
| 394 | // TODO: For now, if the topology changes, we recompute all Flows |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 395 | shouldRecomputeFlowPaths.putAll(allFlowPaths); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 396 | } |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 397 | } |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 398 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 399 | /** |
| 400 | * Process the Flow Entry events. |
| 401 | */ |
| 402 | private void processFlowEntryEvents() { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 403 | FlowPath flowPath; |
| 404 | FlowEntry updatedFlowEntry; |
| 405 | |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 406 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 407 | // Update Flow Entries with previously unmatched Flow Entry updates |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 408 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 409 | if (! unmatchedFlowEntryAdd.isEmpty()) { |
| 410 | Map<Long, FlowEntry> remainingUpdates = new HashMap<Long, FlowEntry>(); |
| 411 | for (FlowEntry flowEntry : unmatchedFlowEntryAdd.values()) { |
| 412 | flowPath = allFlowPaths.get(flowEntry.flowId().value()); |
| 413 | if (flowPath == null) |
| 414 | continue; |
| 415 | updatedFlowEntry = updateFlowEntryAdd(flowPath, flowEntry); |
| 416 | if (updatedFlowEntry == null) { |
| 417 | remainingUpdates.put(flowEntry.flowEntryId().value(), |
| 418 | flowEntry); |
| 419 | continue; |
| 420 | } |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 421 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 422 | } |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 423 | unmatchedFlowEntryAdd = remainingUpdates; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 424 | } |
| 425 | |
| 426 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 427 | // Process all Flow Entry events and update the appropriate state |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 428 | // |
| 429 | for (EventEntry<FlowEntry> eventEntry : flowEntryEvents) { |
| 430 | FlowEntry flowEntry = eventEntry.eventData(); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 431 | |
| 432 | log.debug("Flow Entry Event: {} {}", eventEntry.eventType(), |
| 433 | flowEntry.toString()); |
| 434 | |
| 435 | if ((! flowEntry.isValidFlowId()) || |
| 436 | (! flowEntry.isValidFlowEntryId())) { |
| 437 | continue; |
| 438 | } |
| 439 | |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 440 | switch (eventEntry.eventType()) { |
| 441 | case ENTRY_ADD: |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 442 | flowPath = allFlowPaths.get(flowEntry.flowId().value()); |
| 443 | if (flowPath == null) { |
| 444 | // Flow Path not found: keep the entry for later matching |
| 445 | unmatchedFlowEntryAdd.put(flowEntry.flowEntryId().value(), |
| 446 | flowEntry); |
| 447 | break; |
| 448 | } |
| 449 | updatedFlowEntry = updateFlowEntryAdd(flowPath, flowEntry); |
| 450 | if (updatedFlowEntry == null) { |
| 451 | // Flow Entry not found: keep the entry for later matching |
| 452 | unmatchedFlowEntryAdd.put(flowEntry.flowEntryId().value(), |
| 453 | flowEntry); |
| 454 | break; |
| 455 | } |
| 456 | // Add the updated entry to the list of updated Flow Entries |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 457 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 458 | break; |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 459 | |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 460 | case ENTRY_REMOVE: |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 461 | flowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 462 | if (unmatchedFlowEntryAdd.remove(flowEntry.flowEntryId().value()) != null) { |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 463 | continue; // Removed previously unmatched entry |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 464 | } |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 465 | |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 466 | flowPath = allFlowPaths.get(flowEntry.flowId().value()); |
| 467 | if (flowPath == null) { |
| 468 | // Flow Path not found: ignore the update |
| 469 | break; |
| 470 | } |
| 471 | updatedFlowEntry = updateFlowEntryRemove(flowPath, flowEntry); |
| 472 | if (updatedFlowEntry == null) { |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 473 | // Flow Entry not found: ignore it |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 474 | break; |
| 475 | } |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 476 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 477 | break; |
| 478 | } |
| 479 | } |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 480 | } |
| 481 | |
| 482 | /** |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 483 | * Update a Flow Entry because of an external ENTRY_ADD event. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 484 | * |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 485 | * @param flowPath the FlowPath for the Flow Entry to update. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 486 | * @param flowEntry the FlowEntry with the new state. |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 487 | * @return the updated Flow Entry if found, otherwise null. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 488 | */ |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 489 | private FlowEntry updateFlowEntryAdd(FlowPath flowPath, |
| 490 | FlowEntry flowEntry) { |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 491 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 492 | // Iterate over all Flow Entries and find a match. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 493 | // |
| 494 | for (FlowEntry localFlowEntry : flowPath.flowEntries()) { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 495 | if (! TopologyManager.isSameFlowEntryDataPath(localFlowEntry, |
| 496 | flowEntry)) { |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 497 | continue; |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 498 | } |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 499 | |
| 500 | // |
| 501 | // Local Flow Entry match found |
| 502 | // |
| 503 | if (localFlowEntry.isValidFlowEntryId()) { |
| 504 | if (localFlowEntry.flowEntryId().value() != |
| 505 | flowEntry.flowEntryId().value()) { |
| 506 | // |
| 507 | // Find a local Flow Entry, but the Flow Entry ID doesn't |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 508 | // match. Keep looking. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 509 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 510 | continue; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 511 | } |
| 512 | } else { |
| 513 | // Update the Flow Entry ID |
| 514 | FlowEntryId flowEntryId = |
| 515 | new FlowEntryId(flowEntry.flowEntryId().value()); |
| 516 | localFlowEntry.setFlowEntryId(flowEntryId); |
| 517 | } |
| 518 | |
| 519 | // |
| 520 | // Update the local Flow Entry. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 521 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 522 | localFlowEntry.setFlowEntryUserState(flowEntry.flowEntryUserState()); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 523 | localFlowEntry.setFlowEntrySwitchState(flowEntry.flowEntrySwitchState()); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 524 | return localFlowEntry; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 525 | } |
| 526 | |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 527 | return null; // Entry not found |
| 528 | } |
| 529 | |
| 530 | /** |
| 531 | * Update a Flow Entry because of an external ENTRY_REMOVE event. |
| 532 | * |
| 533 | * @param flowPath the FlowPath for the Flow Entry to update. |
| 534 | * @param flowEntry the FlowEntry with the new state. |
| 535 | * @return the updated Flow Entry if found, otherwise null. |
| 536 | */ |
| 537 | private FlowEntry updateFlowEntryRemove(FlowPath flowPath, |
| 538 | FlowEntry flowEntry) { |
| 539 | // |
| 540 | // Iterate over all Flow Entries and find a match based on |
| 541 | // the Flow Entry ID. |
| 542 | // |
| 543 | for (FlowEntry localFlowEntry : flowPath.flowEntries()) { |
| 544 | if (! localFlowEntry.isValidFlowEntryId()) |
| 545 | continue; |
| 546 | if (localFlowEntry.flowEntryId().value() != |
| 547 | flowEntry.flowEntryId().value()) { |
| 548 | continue; |
| 549 | } |
| 550 | // |
| 551 | // Update the local Flow Entry. |
| 552 | // |
| 553 | localFlowEntry.setFlowEntryUserState(flowEntry.flowEntryUserState()); |
| 554 | localFlowEntry.setFlowEntrySwitchState(flowEntry.flowEntrySwitchState()); |
| 555 | return localFlowEntry; |
| 556 | } |
| 557 | |
| 558 | return null; // Entry not found |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 559 | } |
| 560 | |
| 561 | /** |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 562 | * Recompute a Flow Path. |
| 563 | * |
| 564 | * @param flowPath the Flow Path to recompute. |
| 565 | * @return true if the recomputed Flow Path has changed, otherwise false. |
| 566 | */ |
| 567 | private boolean recomputeFlowPath(FlowPath flowPath) { |
| 568 | boolean hasChanged = false; |
| 569 | |
| 570 | // |
| 571 | // Test whether the Flow Path needs to be recomputed |
| 572 | // |
| 573 | switch (flowPath.flowPathType()) { |
Yuta HIGUCHI | e1038fb | 2013-10-30 15:35:18 -0700 | [diff] [blame] | 574 | case FP_TYPE_UNKNOWN: |
| 575 | return false; // Can't recompute on Unknown FlowType |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 576 | case FP_TYPE_SHORTEST_PATH: |
| 577 | break; |
| 578 | case FP_TYPE_EXPLICIT_PATH: |
| 579 | return false; // An explicit path never changes |
| 580 | } |
| 581 | |
| 582 | DataPath oldDataPath = flowPath.dataPath(); |
| 583 | |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 584 | // Compute the new path |
| 585 | DataPath newDataPath = TopologyManager.computeNetworkPath(topology, |
| 586 | flowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 587 | if (newDataPath == null) { |
| 588 | // We need the DataPath to compare the paths |
| 589 | newDataPath = new DataPath(); |
| 590 | } |
| 591 | newDataPath.applyFlowPathFlags(flowPath.flowPathFlags()); |
| 592 | |
| 593 | // |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 594 | // Test whether the new path is same |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 595 | // |
| 596 | if (oldDataPath.flowEntries().size() != |
| 597 | newDataPath.flowEntries().size()) { |
| 598 | hasChanged = true; |
| 599 | } else { |
| 600 | Iterator<FlowEntry> oldIter = oldDataPath.flowEntries().iterator(); |
| 601 | Iterator<FlowEntry> newIter = newDataPath.flowEntries().iterator(); |
| 602 | while (oldIter.hasNext() && newIter.hasNext()) { |
| 603 | FlowEntry oldFlowEntry = oldIter.next(); |
| 604 | FlowEntry newFlowEntry = newIter.next(); |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 605 | if (! TopologyManager.isSameFlowEntryDataPath(oldFlowEntry, |
| 606 | newFlowEntry)) { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 607 | hasChanged = true; |
| 608 | break; |
| 609 | } |
| 610 | } |
| 611 | } |
| 612 | if (! hasChanged) |
| 613 | return hasChanged; |
| 614 | |
| 615 | // |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 616 | // Merge the changes in the path: |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 617 | // - If a Flow Entry for a switch is in the old data path, but not |
| 618 | // in the new data path, then mark it for deletion. |
| 619 | // - If a Flow Entry for a switch is in the new data path, but not |
| 620 | // in the old data path, then mark it for addition. |
| 621 | // - If a Flow Entry for a switch is in both the old and the new |
| 622 | // data path, but it has changed, e.g., the incoming and/or outgoing |
| 623 | // port(s), then mark the old Flow Entry for deletion, and mark |
| 624 | // the new Flow Entry for addition. |
| 625 | // - If a Flow Entry for a switch is in both the old and the new |
| 626 | // data path, and it hasn't changed, then just keep it. |
| 627 | // |
| 628 | // NOTE: We use the Switch DPID of each entry to match the entries |
| 629 | // |
| 630 | Map<Long, FlowEntry> oldFlowEntriesMap = new HashMap<Long, FlowEntry>(); |
| 631 | Map<Long, FlowEntry> newFlowEntriesMap = new HashMap<Long, FlowEntry>(); |
| 632 | ArrayList<FlowEntry> finalFlowEntries = new ArrayList<FlowEntry>(); |
| 633 | List<FlowEntry> deletedFlowEntries = new LinkedList<FlowEntry>(); |
| 634 | |
| 635 | // Prepare maps with the Flow Entries, so they are fast to lookup |
| 636 | for (FlowEntry flowEntry : oldDataPath.flowEntries()) |
| 637 | oldFlowEntriesMap.put(flowEntry.dpid().value(), flowEntry); |
| 638 | for (FlowEntry flowEntry : newDataPath.flowEntries()) |
| 639 | newFlowEntriesMap.put(flowEntry.dpid().value(), flowEntry); |
| 640 | |
| 641 | // |
| 642 | // Find the old Flow Entries that should be deleted |
| 643 | // |
| 644 | for (FlowEntry oldFlowEntry : oldDataPath.flowEntries()) { |
| 645 | FlowEntry newFlowEntry = |
| 646 | newFlowEntriesMap.get(oldFlowEntry.dpid().value()); |
| 647 | if (newFlowEntry == null) { |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 648 | // The old Flow Entry should be deleted: not on the path |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 649 | oldFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 650 | oldFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 651 | deletedFlowEntries.add(oldFlowEntry); |
| 652 | } |
| 653 | } |
| 654 | |
| 655 | // |
| 656 | // Find the new Flow Entries that should be added or updated |
| 657 | // |
| 658 | int idx = 0; |
| 659 | for (FlowEntry newFlowEntry : newDataPath.flowEntries()) { |
| 660 | FlowEntry oldFlowEntry = |
| 661 | oldFlowEntriesMap.get(newFlowEntry.dpid().value()); |
| 662 | |
| 663 | if ((oldFlowEntry != null) && |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 664 | TopologyManager.isSameFlowEntryDataPath(oldFlowEntry, |
| 665 | newFlowEntry)) { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 666 | // |
| 667 | // Both Flow Entries are same |
| 668 | // |
| 669 | finalFlowEntries.add(oldFlowEntry); |
| 670 | idx++; |
| 671 | continue; |
| 672 | } |
| 673 | |
| 674 | if (oldFlowEntry != null) { |
| 675 | // |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 676 | // The old Flow Entry should be deleted: path diverges |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 677 | // |
| 678 | oldFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 679 | oldFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 680 | deletedFlowEntries.add(oldFlowEntry); |
| 681 | } |
| 682 | |
| 683 | // |
| 684 | // Add the new Flow Entry |
| 685 | // |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 686 | // |
| 687 | // NOTE: Assign only the Flow ID. |
| 688 | // The Flow Entry ID is assigned later only for the Flow Entries |
| 689 | // this instance is responsible for. |
| 690 | // |
| 691 | newFlowEntry.setFlowId(new FlowId(flowPath.flowId().value())); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 692 | |
Pavlin Radoslavov | a4df952 | 2013-12-03 11:03:04 -0800 | [diff] [blame] | 693 | // |
| 694 | // Allocate the FlowEntryMatch by copying the default one |
| 695 | // from the FlowPath (if set). |
| 696 | // |
| 697 | FlowEntryMatch flowEntryMatch = null; |
| 698 | if (flowPath.flowEntryMatch() != null) |
| 699 | flowEntryMatch = new FlowEntryMatch(flowPath.flowEntryMatch()); |
| 700 | else |
| 701 | flowEntryMatch = new FlowEntryMatch(); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 702 | newFlowEntry.setFlowEntryMatch(flowEntryMatch); |
Pavlin Radoslavov | a4df952 | 2013-12-03 11:03:04 -0800 | [diff] [blame] | 703 | |
| 704 | // Set the incoming port matching |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 705 | flowEntryMatch.enableInPort(newFlowEntry.inPort()); |
| 706 | |
| 707 | // |
| 708 | // Set the actions: |
| 709 | // If the first Flow Entry, copy the Flow Path actions to it. |
| 710 | // |
| 711 | FlowEntryActions flowEntryActions = newFlowEntry.flowEntryActions(); |
| 712 | if ((idx == 0) && (flowPath.flowEntryActions() != null)) { |
| 713 | FlowEntryActions flowActions = |
| 714 | new FlowEntryActions(flowPath.flowEntryActions()); |
| 715 | for (FlowEntryAction action : flowActions.actions()) |
| 716 | flowEntryActions.addAction(action); |
| 717 | } |
| 718 | idx++; |
| 719 | |
| 720 | // |
| 721 | // Add the outgoing port output action |
| 722 | // |
| 723 | FlowEntryAction flowEntryAction = new FlowEntryAction(); |
| 724 | flowEntryAction.setActionOutput(newFlowEntry.outPort()); |
| 725 | flowEntryActions.addAction(flowEntryAction); |
| 726 | |
| 727 | // |
| 728 | // Set the state of the new Flow Entry |
| 729 | // |
| 730 | newFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_ADD); |
| 731 | newFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 732 | finalFlowEntries.add(newFlowEntry); |
| 733 | } |
| 734 | |
| 735 | // |
| 736 | // Replace the old Flow Entries with the new Flow Entries. |
| 737 | // Note that the Flow Entries that will be deleted are added at |
| 738 | // the end. |
| 739 | // |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 740 | finalFlowEntries.addAll(deletedFlowEntries); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 741 | flowPath.dataPath().setFlowEntries(finalFlowEntries); |
| 742 | |
| 743 | return hasChanged; |
| 744 | } |
| 745 | |
| 746 | /** |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 747 | * Receive a notification that a Flow is added. |
| 748 | * |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 749 | * @param flowPath the Flow that is added. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 750 | */ |
| 751 | @Override |
| 752 | public void notificationRecvFlowAdded(FlowPath flowPath) { |
| 753 | EventEntry<FlowPath> eventEntry = |
| 754 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 755 | networkEvents.add(eventEntry); |
| 756 | } |
| 757 | |
| 758 | /** |
| 759 | * Receive a notification that a Flow is removed. |
| 760 | * |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 761 | * @param flowPath the Flow that is removed. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 762 | */ |
| 763 | @Override |
| 764 | public void notificationRecvFlowRemoved(FlowPath flowPath) { |
| 765 | EventEntry<FlowPath> eventEntry = |
| 766 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_REMOVE, flowPath); |
| 767 | networkEvents.add(eventEntry); |
| 768 | } |
| 769 | |
| 770 | /** |
| 771 | * Receive a notification that a Flow is updated. |
| 772 | * |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 773 | * @param flowPath the Flow that is updated. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 774 | */ |
| 775 | @Override |
| 776 | public void notificationRecvFlowUpdated(FlowPath flowPath) { |
| 777 | // NOTE: The ADD and UPDATE events are processed in same way |
| 778 | EventEntry<FlowPath> eventEntry = |
| 779 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 780 | networkEvents.add(eventEntry); |
| 781 | } |
| 782 | |
| 783 | /** |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 784 | * Receive a notification that a FlowEntry is added. |
| 785 | * |
| 786 | * @param flowEntry the FlowEntry that is added. |
| 787 | */ |
| 788 | @Override |
| 789 | public void notificationRecvFlowEntryAdded(FlowEntry flowEntry) { |
| 790 | EventEntry<FlowEntry> eventEntry = |
| 791 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_ADD, flowEntry); |
| 792 | networkEvents.add(eventEntry); |
| 793 | } |
| 794 | |
| 795 | /** |
| 796 | * Receive a notification that a FlowEntry is removed. |
| 797 | * |
| 798 | * @param flowEntry the FlowEntry that is removed. |
| 799 | */ |
| 800 | @Override |
| 801 | public void notificationRecvFlowEntryRemoved(FlowEntry flowEntry) { |
| 802 | EventEntry<FlowEntry> eventEntry = |
| 803 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_REMOVE, flowEntry); |
| 804 | networkEvents.add(eventEntry); |
| 805 | } |
| 806 | |
| 807 | /** |
| 808 | * Receive a notification that a FlowEntry is updated. |
| 809 | * |
| 810 | * @param flowEntry the FlowEntry that is updated. |
| 811 | */ |
| 812 | @Override |
| 813 | public void notificationRecvFlowEntryUpdated(FlowEntry flowEntry) { |
| 814 | // NOTE: The ADD and UPDATE events are processed in same way |
| 815 | EventEntry<FlowEntry> eventEntry = |
| 816 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_ADD, flowEntry); |
| 817 | networkEvents.add(eventEntry); |
| 818 | } |
| 819 | |
| 820 | /** |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 821 | * Receive a notification that a Topology Element is added. |
| 822 | * |
| 823 | * @param topologyElement the Topology Element that is added. |
| 824 | */ |
| 825 | @Override |
| 826 | public void notificationRecvTopologyElementAdded(TopologyElement topologyElement) { |
| 827 | EventEntry<TopologyElement> eventEntry = |
| 828 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 829 | networkEvents.add(eventEntry); |
| 830 | } |
| 831 | |
| 832 | /** |
| 833 | * Receive a notification that a Topology Element is removed. |
| 834 | * |
| 835 | * @param topologyElement the Topology Element that is removed. |
| 836 | */ |
| 837 | @Override |
| 838 | public void notificationRecvTopologyElementRemoved(TopologyElement topologyElement) { |
| 839 | EventEntry<TopologyElement> eventEntry = |
| 840 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_REMOVE, topologyElement); |
| 841 | networkEvents.add(eventEntry); |
| 842 | } |
| 843 | |
| 844 | /** |
| 845 | * Receive a notification that a Topology Element is updated. |
| 846 | * |
| 847 | * @param topologyElement the Topology Element that is updated. |
| 848 | */ |
| 849 | @Override |
| 850 | public void notificationRecvTopologyElementUpdated(TopologyElement topologyElement) { |
| 851 | // NOTE: The ADD and UPDATE events are processed in same way |
| 852 | EventEntry<TopologyElement> eventEntry = |
| 853 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 854 | networkEvents.add(eventEntry); |
| 855 | } |
| 856 | } |