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 | |
| 11 | import java.util.concurrent.BlockingQueue; |
| 12 | import java.util.concurrent.LinkedBlockingQueue; |
| 13 | |
| 14 | import net.onrc.onos.datagrid.IDatagridService; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame^] | 15 | import net.onrc.onos.ofcontroller.topology.ShortestPath; |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 16 | import net.onrc.onos.ofcontroller.topology.Topology; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 17 | import net.onrc.onos.ofcontroller.topology.TopologyElement; |
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; |
| 23 | import net.onrc.onos.ofcontroller.util.FlowEntryMatch; |
| 24 | import net.onrc.onos.ofcontroller.util.FlowEntrySwitchState; |
| 25 | import net.onrc.onos.ofcontroller.util.FlowEntryUserState; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 26 | import net.onrc.onos.ofcontroller.util.FlowPath; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame^] | 27 | import net.onrc.onos.ofcontroller.util.FlowPathUserState; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 28 | |
| 29 | import org.slf4j.Logger; |
| 30 | import org.slf4j.LoggerFactory; |
| 31 | |
| 32 | /** |
| 33 | * Class for implementing the Path Computation and Path Maintenance. |
| 34 | */ |
| 35 | class PathComputation extends Thread implements IPathComputationService { |
| 36 | /** The logger. */ |
| 37 | private final static Logger log = LoggerFactory.getLogger(PathComputation.class); |
| 38 | |
| 39 | private FlowManager flowManager; // The Flow Manager to use |
| 40 | private IDatagridService datagridService; // The Datagrid Service to use |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 41 | private Topology topology; // The network topology |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame^] | 42 | private Map<Long, FlowPath> allFlowPaths = new HashMap<Long, FlowPath>(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 43 | |
| 44 | // The queue with Flow Path and Topology Element updates |
| 45 | private BlockingQueue<EventEntry<?>> networkEvents = |
| 46 | new LinkedBlockingQueue<EventEntry<?>>(); |
| 47 | |
| 48 | // The pending Topology and Flow Path events |
| 49 | private List<EventEntry<TopologyElement>> topologyEvents = |
| 50 | new LinkedList<EventEntry<TopologyElement>>(); |
| 51 | private List<EventEntry<FlowPath>> flowPathEvents = |
| 52 | new LinkedList<EventEntry<FlowPath>>(); |
| 53 | |
| 54 | /** |
| 55 | * Constructor for a given Flow Manager and Datagrid Service. |
| 56 | * |
| 57 | * @param flowManager the Flow Manager to use. |
| 58 | * @param datagridService the Datagrid Service to use. |
| 59 | */ |
| 60 | PathComputation(FlowManager flowManager, |
| 61 | IDatagridService datagridService) { |
| 62 | this.flowManager = flowManager; |
| 63 | this.datagridService = datagridService; |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 64 | this.topology = new Topology(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Run the thread. |
| 69 | */ |
| 70 | @Override |
| 71 | public void run() { |
| 72 | // |
| 73 | // Obtain the initial Topology state |
| 74 | // |
| 75 | Collection<TopologyElement> topologyElements = |
| 76 | datagridService.getAllTopologyElements(); |
| 77 | for (TopologyElement topologyElement : topologyElements) { |
| 78 | EventEntry<TopologyElement> eventEntry = |
| 79 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 80 | topologyEvents.add(eventEntry); |
| 81 | } |
| 82 | // |
| 83 | // Obtain the initial Flow Path state |
| 84 | // |
| 85 | Collection<FlowPath> flowPaths = datagridService.getAllFlows(); |
| 86 | for (FlowPath flowPath : flowPaths) { |
| 87 | EventEntry<FlowPath> eventEntry = |
| 88 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 89 | flowPathEvents.add(eventEntry); |
| 90 | } |
| 91 | // Process the events (if any) |
| 92 | processEvents(); |
| 93 | |
| 94 | // |
| 95 | // The main loop |
| 96 | // |
| 97 | Collection<EventEntry<?>> collection = new LinkedList<EventEntry<?>>(); |
| 98 | try { |
| 99 | while (true) { |
| 100 | EventEntry<?> eventEntry = networkEvents.take(); |
| 101 | collection.add(eventEntry); |
| 102 | networkEvents.drainTo(collection); |
| 103 | |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 104 | // |
| 105 | // Demultiplex all events: |
| 106 | // - EventEntry<TopologyElement> |
| 107 | // - EventEntry<FlowPath> |
| 108 | // |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 109 | for (EventEntry<?> event : collection) { |
| 110 | if (event.eventData() instanceof TopologyElement) { |
| 111 | EventEntry<TopologyElement> topologyEventEntry = |
| 112 | (EventEntry<TopologyElement>)event; |
| 113 | topologyEvents.add(topologyEventEntry); |
| 114 | } else if (event.eventData() instanceof FlowPath) { |
| 115 | EventEntry<FlowPath> flowPathEventEntry = |
| 116 | (EventEntry<FlowPath>)event; |
| 117 | flowPathEvents.add(flowPathEventEntry); |
| 118 | } |
| 119 | } |
| 120 | collection.clear(); |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 121 | |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 122 | // Process the events (if any) |
| 123 | processEvents(); |
| 124 | } |
| 125 | } catch (Exception exception) { |
| 126 | log.debug("Exception processing Network Events: ", exception); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Process the events (if any) |
| 132 | */ |
| 133 | private void processEvents() { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame^] | 134 | List<FlowPath> newFlowPaths = new LinkedList<FlowPath>(); |
| 135 | List<FlowPath> recomputeFlowPaths = new LinkedList<FlowPath>(); |
| 136 | List<FlowPath> modifiedFlowPaths = new LinkedList<FlowPath>(); |
| 137 | |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 138 | if (topologyEvents.isEmpty() && flowPathEvents.isEmpty()) |
| 139 | return; // Nothing to do |
| 140 | |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 141 | // |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame^] | 142 | // Process the Flow Path events |
| 143 | // |
| 144 | for (EventEntry<FlowPath> eventEntry : flowPathEvents) { |
| 145 | FlowPath flowPath = eventEntry.eventData(); |
| 146 | |
| 147 | switch (eventEntry.eventType()) { |
| 148 | case ENTRY_ADD: { |
| 149 | // |
| 150 | // Add a new Flow Path |
| 151 | // |
| 152 | if (allFlowPaths.get(flowPath.flowId().value()) != null) { |
| 153 | // |
| 154 | // TODO: What to do if the Flow Path already exists? |
| 155 | // Remove and then re-add it, or merge the info? |
| 156 | // For now, we don't have to do anything. |
| 157 | // |
| 158 | break; |
| 159 | } |
| 160 | |
| 161 | switch (flowPath.flowPathType()) { |
| 162 | case FP_TYPE_SHORTEST_PATH: |
| 163 | // |
| 164 | // Reset the Data Path, in case it was set already, because |
| 165 | // we are going to recompute it anyway. |
| 166 | // |
| 167 | flowPath.flowEntries().clear(); |
| 168 | recomputeFlowPaths.add(flowPath); |
| 169 | break; |
| 170 | case FP_TYPE_EXPLICIT_PATH: |
| 171 | // |
| 172 | // Mark all Flow Entries for installation in the switches. |
| 173 | // |
| 174 | for (FlowEntry flowEntry : flowPath.flowEntries()) { |
| 175 | flowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 176 | } |
| 177 | modifiedFlowPaths.add(flowPath); |
| 178 | break; |
| 179 | } |
| 180 | newFlowPaths.add(flowPath); |
| 181 | |
| 182 | break; |
| 183 | } |
| 184 | |
| 185 | case ENTRY_REMOVE: { |
| 186 | // |
| 187 | // Remove an existing Flow Path. |
| 188 | // |
| 189 | // Find the Flow Path, and mark the Flow and its Flow Entries |
| 190 | // for deletion. |
| 191 | // |
| 192 | FlowPath existingFlowPath = |
| 193 | allFlowPaths.get(flowPath.flowId().value()); |
| 194 | if (existingFlowPath == null) |
| 195 | continue; // Nothing to do |
| 196 | |
| 197 | existingFlowPath.setFlowPathUserState(FlowPathUserState.FP_USER_DELETE); |
| 198 | for (FlowEntry flowEntry : existingFlowPath.flowEntries()) { |
| 199 | flowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 200 | flowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 201 | } |
| 202 | |
| 203 | allFlowPaths.remove(existingFlowPath.flowId()); |
| 204 | modifiedFlowPaths.add(existingFlowPath); |
| 205 | |
| 206 | break; |
| 207 | } |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | // |
| 212 | // Process the topology events |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 213 | // |
| 214 | boolean isTopologyModified = false; |
| 215 | for (EventEntry<TopologyElement> eventEntry : topologyEvents) { |
| 216 | TopologyElement topologyElement = eventEntry.eventData(); |
| 217 | switch (eventEntry.eventType()) { |
| 218 | case ENTRY_ADD: |
| 219 | isTopologyModified = topology.addTopologyElement(topologyElement); |
| 220 | break; |
| 221 | case ENTRY_REMOVE: |
| 222 | isTopologyModified = topology.removeTopologyElement(topologyElement); |
| 223 | break; |
| 224 | } |
| 225 | } |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame^] | 226 | if (isTopologyModified) { |
| 227 | // TODO: For now, if the topology changes, we recompute all Flows |
| 228 | recomputeFlowPaths.addAll(allFlowPaths.values()); |
| 229 | } |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 230 | |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame^] | 231 | // Add all new Flows |
| 232 | for (FlowPath flowPath : newFlowPaths) { |
| 233 | allFlowPaths.put(flowPath.flowId().value(), flowPath); |
| 234 | } |
| 235 | |
| 236 | // Recompute all affected Flow Paths and keep only the modified |
| 237 | for (FlowPath flowPath : recomputeFlowPaths) { |
| 238 | if (recomputeFlowPath(flowPath)) |
| 239 | modifiedFlowPaths.add(flowPath); |
| 240 | } |
| 241 | |
| 242 | // TODO: Implement the rest: push the Flow Entries from modifiedFlowPaths! |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 243 | |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 244 | // Cleanup |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 245 | topologyEvents.clear(); |
| 246 | flowPathEvents.clear(); |
| 247 | } |
| 248 | |
| 249 | /** |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame^] | 250 | * Recompute a Flow Path. |
| 251 | * |
| 252 | * @param flowPath the Flow Path to recompute. |
| 253 | * @return true if the recomputed Flow Path has changed, otherwise false. |
| 254 | */ |
| 255 | private boolean recomputeFlowPath(FlowPath flowPath) { |
| 256 | boolean hasChanged = false; |
| 257 | |
| 258 | // |
| 259 | // Test whether the Flow Path needs to be recomputed |
| 260 | // |
| 261 | switch (flowPath.flowPathType()) { |
| 262 | case FP_TYPE_SHORTEST_PATH: |
| 263 | break; |
| 264 | case FP_TYPE_EXPLICIT_PATH: |
| 265 | return false; // An explicit path never changes |
| 266 | } |
| 267 | |
| 268 | DataPath oldDataPath = flowPath.dataPath(); |
| 269 | |
| 270 | // Compute the new shortest path |
| 271 | DataPath newDataPath = |
| 272 | ShortestPath.getTopologyShortestPath(topology, |
| 273 | flowPath.dataPath().srcPort(), |
| 274 | flowPath.dataPath().dstPort()); |
| 275 | if (newDataPath == null) { |
| 276 | // We need the DataPath to compare the paths |
| 277 | newDataPath = new DataPath(); |
| 278 | } |
| 279 | newDataPath.applyFlowPathFlags(flowPath.flowPathFlags()); |
| 280 | |
| 281 | // |
| 282 | // Test whether the shortest path is same |
| 283 | // |
| 284 | if (oldDataPath.flowEntries().size() != |
| 285 | newDataPath.flowEntries().size()) { |
| 286 | hasChanged = true; |
| 287 | } else { |
| 288 | Iterator<FlowEntry> oldIter = oldDataPath.flowEntries().iterator(); |
| 289 | Iterator<FlowEntry> newIter = newDataPath.flowEntries().iterator(); |
| 290 | while (oldIter.hasNext() && newIter.hasNext()) { |
| 291 | FlowEntry oldFlowEntry = oldIter.next(); |
| 292 | FlowEntry newFlowEntry = newIter.next(); |
| 293 | if (! newFlowEntry.isSameDataPath(oldFlowEntry)) { |
| 294 | hasChanged = true; |
| 295 | break; |
| 296 | } |
| 297 | } |
| 298 | } |
| 299 | if (! hasChanged) |
| 300 | return hasChanged; |
| 301 | |
| 302 | // |
| 303 | // Merge the changes in the shortest path: |
| 304 | // - If a Flow Entry for a switch is in the old data path, but not |
| 305 | // in the new data path, then mark it for deletion. |
| 306 | // - If a Flow Entry for a switch is in the new data path, but not |
| 307 | // in the old data path, then mark it for addition. |
| 308 | // - If a Flow Entry for a switch is in both the old and the new |
| 309 | // data path, but it has changed, e.g., the incoming and/or outgoing |
| 310 | // port(s), then mark the old Flow Entry for deletion, and mark |
| 311 | // the new Flow Entry for addition. |
| 312 | // - If a Flow Entry for a switch is in both the old and the new |
| 313 | // data path, and it hasn't changed, then just keep it. |
| 314 | // |
| 315 | // NOTE: We use the Switch DPID of each entry to match the entries |
| 316 | // |
| 317 | Map<Long, FlowEntry> oldFlowEntriesMap = new HashMap<Long, FlowEntry>(); |
| 318 | Map<Long, FlowEntry> newFlowEntriesMap = new HashMap<Long, FlowEntry>(); |
| 319 | ArrayList<FlowEntry> finalFlowEntries = new ArrayList<FlowEntry>(); |
| 320 | List<FlowEntry> deletedFlowEntries = new LinkedList<FlowEntry>(); |
| 321 | |
| 322 | // Prepare maps with the Flow Entries, so they are fast to lookup |
| 323 | for (FlowEntry flowEntry : oldDataPath.flowEntries()) |
| 324 | oldFlowEntriesMap.put(flowEntry.dpid().value(), flowEntry); |
| 325 | for (FlowEntry flowEntry : newDataPath.flowEntries()) |
| 326 | newFlowEntriesMap.put(flowEntry.dpid().value(), flowEntry); |
| 327 | |
| 328 | // |
| 329 | // Find the old Flow Entries that should be deleted |
| 330 | // |
| 331 | for (FlowEntry oldFlowEntry : oldDataPath.flowEntries()) { |
| 332 | FlowEntry newFlowEntry = |
| 333 | newFlowEntriesMap.get(oldFlowEntry.dpid().value()); |
| 334 | if (newFlowEntry == null) { |
| 335 | // The old Flow Entry should be deleted |
| 336 | oldFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 337 | oldFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 338 | deletedFlowEntries.add(oldFlowEntry); |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | // |
| 343 | // Find the new Flow Entries that should be added or updated |
| 344 | // |
| 345 | int idx = 0; |
| 346 | for (FlowEntry newFlowEntry : newDataPath.flowEntries()) { |
| 347 | FlowEntry oldFlowEntry = |
| 348 | oldFlowEntriesMap.get(newFlowEntry.dpid().value()); |
| 349 | |
| 350 | if ((oldFlowEntry != null) && |
| 351 | newFlowEntry.isSameDataPath(oldFlowEntry)) { |
| 352 | // |
| 353 | // Both Flow Entries are same |
| 354 | // |
| 355 | finalFlowEntries.add(oldFlowEntry); |
| 356 | idx++; |
| 357 | continue; |
| 358 | } |
| 359 | |
| 360 | if (oldFlowEntry != null) { |
| 361 | // |
| 362 | // The old Flow Entry should be deleted |
| 363 | // |
| 364 | oldFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 365 | oldFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 366 | deletedFlowEntries.add(oldFlowEntry); |
| 367 | } |
| 368 | |
| 369 | // |
| 370 | // Add the new Flow Entry |
| 371 | // |
| 372 | |
| 373 | // Set the incoming port matching |
| 374 | FlowEntryMatch flowEntryMatch = new FlowEntryMatch(); |
| 375 | newFlowEntry.setFlowEntryMatch(flowEntryMatch); |
| 376 | flowEntryMatch.enableInPort(newFlowEntry.inPort()); |
| 377 | |
| 378 | // |
| 379 | // Set the actions: |
| 380 | // If the first Flow Entry, copy the Flow Path actions to it. |
| 381 | // |
| 382 | FlowEntryActions flowEntryActions = newFlowEntry.flowEntryActions(); |
| 383 | if ((idx == 0) && (flowPath.flowEntryActions() != null)) { |
| 384 | FlowEntryActions flowActions = |
| 385 | new FlowEntryActions(flowPath.flowEntryActions()); |
| 386 | for (FlowEntryAction action : flowActions.actions()) |
| 387 | flowEntryActions.addAction(action); |
| 388 | } |
| 389 | idx++; |
| 390 | |
| 391 | // |
| 392 | // Add the outgoing port output action |
| 393 | // |
| 394 | FlowEntryAction flowEntryAction = new FlowEntryAction(); |
| 395 | flowEntryAction.setActionOutput(newFlowEntry.outPort()); |
| 396 | flowEntryActions.addAction(flowEntryAction); |
| 397 | |
| 398 | // |
| 399 | // Set the state of the new Flow Entry |
| 400 | // |
| 401 | newFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_ADD); |
| 402 | newFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 403 | finalFlowEntries.add(newFlowEntry); |
| 404 | } |
| 405 | |
| 406 | // |
| 407 | // Replace the old Flow Entries with the new Flow Entries. |
| 408 | // Note that the Flow Entries that will be deleted are added at |
| 409 | // the end. |
| 410 | // |
| 411 | for (FlowEntry flowEntry : deletedFlowEntries) |
| 412 | finalFlowEntries.add(flowEntry); |
| 413 | flowPath.dataPath().setFlowEntries(finalFlowEntries); |
| 414 | |
| 415 | return hasChanged; |
| 416 | } |
| 417 | |
| 418 | /** |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 419 | * Receive a notification that a Flow is added. |
| 420 | * |
| 421 | * @param flowPath the flow that is added. |
| 422 | */ |
| 423 | @Override |
| 424 | public void notificationRecvFlowAdded(FlowPath flowPath) { |
| 425 | EventEntry<FlowPath> eventEntry = |
| 426 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 427 | networkEvents.add(eventEntry); |
| 428 | } |
| 429 | |
| 430 | /** |
| 431 | * Receive a notification that a Flow is removed. |
| 432 | * |
| 433 | * @param flowPath the flow that is removed. |
| 434 | */ |
| 435 | @Override |
| 436 | public void notificationRecvFlowRemoved(FlowPath flowPath) { |
| 437 | EventEntry<FlowPath> eventEntry = |
| 438 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_REMOVE, flowPath); |
| 439 | networkEvents.add(eventEntry); |
| 440 | } |
| 441 | |
| 442 | /** |
| 443 | * Receive a notification that a Flow is updated. |
| 444 | * |
| 445 | * @param flowPath the flow that is updated. |
| 446 | */ |
| 447 | @Override |
| 448 | public void notificationRecvFlowUpdated(FlowPath flowPath) { |
| 449 | // NOTE: The ADD and UPDATE events are processed in same way |
| 450 | EventEntry<FlowPath> eventEntry = |
| 451 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 452 | networkEvents.add(eventEntry); |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * Receive a notification that a Topology Element is added. |
| 457 | * |
| 458 | * @param topologyElement the Topology Element that is added. |
| 459 | */ |
| 460 | @Override |
| 461 | public void notificationRecvTopologyElementAdded(TopologyElement topologyElement) { |
| 462 | EventEntry<TopologyElement> eventEntry = |
| 463 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 464 | networkEvents.add(eventEntry); |
| 465 | } |
| 466 | |
| 467 | /** |
| 468 | * Receive a notification that a Topology Element is removed. |
| 469 | * |
| 470 | * @param topologyElement the Topology Element that is removed. |
| 471 | */ |
| 472 | @Override |
| 473 | public void notificationRecvTopologyElementRemoved(TopologyElement topologyElement) { |
| 474 | EventEntry<TopologyElement> eventEntry = |
| 475 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_REMOVE, topologyElement); |
| 476 | networkEvents.add(eventEntry); |
| 477 | } |
| 478 | |
| 479 | /** |
| 480 | * Receive a notification that a Topology Element is updated. |
| 481 | * |
| 482 | * @param topologyElement the Topology Element that is updated. |
| 483 | */ |
| 484 | @Override |
| 485 | public void notificationRecvTopologyElementUpdated(TopologyElement topologyElement) { |
| 486 | // NOTE: The ADD and UPDATE events are processed in same way |
| 487 | EventEntry<TopologyElement> eventEntry = |
| 488 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 489 | networkEvents.add(eventEntry); |
| 490 | } |
| 491 | } |