Simon Hunt | a17fa67 | 2015-08-19 18:42:22 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | * |
| 16 | */ |
| 17 | |
| 18 | package org.onosproject.ui.impl; |
| 19 | |
| 20 | import com.google.common.collect.ImmutableList; |
| 21 | import org.onosproject.net.Device; |
| 22 | import org.onosproject.net.DeviceId; |
| 23 | import org.onosproject.net.Host; |
| 24 | import org.onosproject.net.Link; |
| 25 | import org.onosproject.net.LinkKey; |
| 26 | import org.onosproject.net.PortNumber; |
| 27 | import org.onosproject.net.flow.FlowEntry; |
| 28 | import org.onosproject.net.flow.TrafficTreatment; |
| 29 | import org.onosproject.net.flow.instructions.Instruction; |
| 30 | import org.onosproject.net.flow.instructions.Instructions.OutputInstruction; |
| 31 | import org.onosproject.net.intent.FlowRuleIntent; |
| 32 | import org.onosproject.net.intent.Intent; |
| 33 | import org.onosproject.net.intent.LinkCollectionIntent; |
| 34 | import org.onosproject.net.intent.OpticalConnectivityIntent; |
| 35 | import org.onosproject.net.intent.OpticalPathIntent; |
| 36 | import org.onosproject.net.intent.PathIntent; |
| 37 | import org.onosproject.net.statistic.Load; |
| 38 | import org.onosproject.ui.impl.topo.BiLink; |
| 39 | import org.onosproject.ui.impl.topo.IntentSelection; |
| 40 | import org.onosproject.ui.impl.topo.LinkStatsType; |
| 41 | import org.onosproject.ui.impl.topo.NodeSelection; |
| 42 | import org.onosproject.ui.impl.topo.ServicesBundle; |
| 43 | import org.onosproject.ui.impl.topo.TopoUtils; |
| 44 | import org.onosproject.ui.impl.topo.TopologyViewIntentFilter; |
| 45 | import org.onosproject.ui.impl.topo.TrafficClass; |
| 46 | import org.onosproject.ui.topo.Highlights; |
| 47 | import org.slf4j.Logger; |
| 48 | import org.slf4j.LoggerFactory; |
| 49 | |
| 50 | import java.util.ArrayList; |
| 51 | import java.util.Collection; |
| 52 | import java.util.Collections; |
| 53 | import java.util.HashMap; |
| 54 | import java.util.HashSet; |
| 55 | import java.util.List; |
| 56 | import java.util.Map; |
| 57 | import java.util.Set; |
| 58 | import java.util.Timer; |
| 59 | import java.util.TimerTask; |
| 60 | |
| 61 | import static org.onosproject.net.DefaultEdgeLink.createEdgeLink; |
| 62 | import static org.onosproject.ui.impl.TrafficMonitorObject.Mode.IDLE; |
| 63 | import static org.onosproject.ui.impl.TrafficMonitorObject.Mode.SEL_INTENT; |
| 64 | import static org.onosproject.ui.topo.LinkHighlight.Flavor.PRIMARY_HIGHLIGHT; |
| 65 | import static org.onosproject.ui.topo.LinkHighlight.Flavor.SECONDARY_HIGHLIGHT; |
| 66 | |
| 67 | /** |
| 68 | * Encapsulates the behavior of monitoring specific traffic patterns. |
| 69 | */ |
| 70 | public class TrafficMonitorObject { |
| 71 | |
| 72 | // 4 Kilo Bytes as threshold |
| 73 | private static final double BPS_THRESHOLD = 4 * TopoUtils.KILO; |
| 74 | |
| 75 | private static final Logger log = |
| 76 | LoggerFactory.getLogger(TrafficMonitorObject.class); |
| 77 | |
| 78 | /** |
| 79 | * Designates the different modes of operation. |
| 80 | */ |
| 81 | public enum Mode { |
| 82 | IDLE, |
| 83 | ALL_FLOW_TRAFFIC, |
| 84 | ALL_PORT_TRAFFIC, |
| 85 | DEV_LINK_FLOWS, |
| 86 | RELATED_INTENTS, |
| 87 | SEL_INTENT |
| 88 | } |
| 89 | |
| 90 | private final long trafficPeriod; |
| 91 | private final ServicesBundle servicesBundle; |
| 92 | private final TopologyViewMessageHandler messageHandler; |
| 93 | private final TopologyViewIntentFilter intentFilter; |
| 94 | |
| 95 | private final Timer timer = new Timer("topo-traffic"); |
| 96 | |
| 97 | private TimerTask trafficTask = null; |
| 98 | private Mode mode = IDLE; |
| 99 | private NodeSelection selectedNodes = null; |
| 100 | private IntentSelection selectedIntents = null; |
| 101 | |
| 102 | |
| 103 | /** |
| 104 | * Constructs a traffic monitor. |
| 105 | * |
| 106 | * @param trafficPeriod traffic task period in ms |
| 107 | * @param servicesBundle bundle of services |
| 108 | * @param messageHandler our message handler |
| 109 | */ |
| 110 | public TrafficMonitorObject(long trafficPeriod, |
| 111 | ServicesBundle servicesBundle, |
| 112 | TopologyViewMessageHandler messageHandler) { |
| 113 | this.trafficPeriod = trafficPeriod; |
| 114 | this.servicesBundle = servicesBundle; |
| 115 | this.messageHandler = messageHandler; |
| 116 | |
| 117 | intentFilter = new TopologyViewIntentFilter(servicesBundle); |
| 118 | } |
| 119 | |
| 120 | // ======================================================================= |
| 121 | // === API === // TODO: add javadocs |
| 122 | |
| 123 | public synchronized void monitor(Mode mode) { |
| 124 | log.debug("monitor: {}", mode); |
| 125 | this.mode = mode; |
| 126 | |
| 127 | switch (mode) { |
| 128 | case ALL_FLOW_TRAFFIC: |
| 129 | clearSelection(); |
| 130 | scheduleTask(); |
| 131 | sendAllFlowTraffic(); |
| 132 | break; |
| 133 | |
| 134 | case ALL_PORT_TRAFFIC: |
| 135 | clearSelection(); |
| 136 | scheduleTask(); |
| 137 | sendAllPortTraffic(); |
| 138 | break; |
| 139 | |
| 140 | case SEL_INTENT: |
| 141 | scheduleTask(); |
| 142 | sendSelectedIntentTraffic(); |
| 143 | break; |
| 144 | |
| 145 | default: |
| 146 | log.debug("Unexpected call to monitor({})", mode); |
| 147 | clearAll(); |
| 148 | break; |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | public synchronized void monitor(Mode mode, NodeSelection nodeSelection) { |
| 153 | log.debug("monitor: {} -- {}", mode, nodeSelection); |
| 154 | this.mode = mode; |
| 155 | this.selectedNodes = nodeSelection; |
| 156 | |
| 157 | switch (mode) { |
| 158 | case DEV_LINK_FLOWS: |
| 159 | // only care about devices (not hosts) |
| 160 | if (selectedNodes.devices().isEmpty()) { |
| 161 | sendClearAll(); |
| 162 | } else { |
| 163 | scheduleTask(); |
| 164 | sendDeviceLinkFlows(); |
| 165 | } |
| 166 | break; |
| 167 | |
| 168 | case RELATED_INTENTS: |
| 169 | if (selectedNodes.none()) { |
| 170 | sendClearAll(); |
| 171 | } else { |
| 172 | selectedIntents = new IntentSelection(selectedNodes, intentFilter); |
| 173 | if (selectedIntents.none()) { |
| 174 | sendClearAll(); |
| 175 | } else { |
| 176 | sendSelectedIntents(); |
| 177 | } |
| 178 | } |
| 179 | break; |
| 180 | |
| 181 | default: |
| 182 | log.debug("Unexpected call to monitor({}, {})", mode, nodeSelection); |
| 183 | clearAll(); |
| 184 | break; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | public synchronized void monitor(Intent intent) { |
| 189 | log.debug("monitor intent: {}", intent.id()); |
| 190 | selectedNodes = null; |
| 191 | selectedIntents = new IntentSelection(intent); |
| 192 | mode = SEL_INTENT; |
| 193 | scheduleTask(); |
| 194 | sendSelectedIntentTraffic(); |
| 195 | } |
| 196 | |
| 197 | public synchronized void selectNextIntent() { |
| 198 | if (selectedIntents != null) { |
| 199 | selectedIntents.next(); |
| 200 | sendSelectedIntents(); |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | public synchronized void selectPreviousIntent() { |
| 205 | if (selectedIntents != null) { |
| 206 | selectedIntents.prev(); |
| 207 | sendSelectedIntents(); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | public synchronized void pokeIntent() { |
| 212 | if (mode == SEL_INTENT) { |
| 213 | sendSelectedIntentTraffic(); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | public synchronized void stop() { |
| 218 | log.debug("STOP"); |
| 219 | if (mode != IDLE) { |
| 220 | sendClearAll(); |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | |
| 225 | // ======================================================================= |
| 226 | // === Helper methods === |
| 227 | |
| 228 | private void sendClearAll() { |
| 229 | clearAll(); |
| 230 | sendClearHighlights(); |
| 231 | } |
| 232 | |
| 233 | private void clearAll() { |
| 234 | this.mode = IDLE; |
| 235 | clearSelection(); |
| 236 | cancelTask(); |
| 237 | } |
| 238 | |
| 239 | private void clearSelection() { |
| 240 | selectedNodes = null; |
| 241 | selectedIntents = null; |
| 242 | } |
| 243 | |
| 244 | private synchronized void scheduleTask() { |
| 245 | if (trafficTask == null) { |
| 246 | log.debug("Starting up background traffic task..."); |
| 247 | trafficTask = new TrafficMonitor(); |
| 248 | timer.schedule(trafficTask, trafficPeriod, trafficPeriod); |
| 249 | } else { |
| 250 | // TEMPORARY until we are sure this is working correctly |
| 251 | log.debug("(traffic task already running)"); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | private synchronized void cancelTask() { |
| 256 | if (trafficTask != null) { |
| 257 | trafficTask.cancel(); |
| 258 | trafficTask = null; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | // --- |
| 263 | |
| 264 | private void sendAllFlowTraffic() { |
| 265 | log.debug("sendAllFlowTraffic"); |
| 266 | sendHighlights(trafficSummary(LinkStatsType.FLOW_STATS)); |
| 267 | } |
| 268 | |
| 269 | private void sendAllPortTraffic() { |
| 270 | log.debug("sendAllPortTraffic"); |
| 271 | sendHighlights(trafficSummary(LinkStatsType.PORT_STATS)); |
| 272 | } |
| 273 | |
| 274 | private void sendDeviceLinkFlows() { |
| 275 | log.debug("sendDeviceLinkFlows: {}", selectedNodes); |
| 276 | sendHighlights(deviceLinkFlows()); |
| 277 | } |
| 278 | |
| 279 | private void sendSelectedIntents() { |
| 280 | log.debug("sendSelectedIntents: {}", selectedIntents); |
| 281 | sendHighlights(intentGroup()); |
| 282 | } |
| 283 | |
| 284 | private void sendSelectedIntentTraffic() { |
| 285 | log.debug("sendSelectedIntentTraffic: {}", selectedIntents); |
| 286 | sendHighlights(intentTraffic()); |
| 287 | } |
| 288 | |
| 289 | private void sendClearHighlights() { |
| 290 | log.debug("sendClearHighlights"); |
| 291 | sendHighlights(new Highlights()); |
| 292 | } |
| 293 | |
| 294 | private void sendHighlights(Highlights highlights) { |
| 295 | messageHandler.sendHighlights(highlights); |
| 296 | } |
| 297 | |
| 298 | |
| 299 | // ======================================================================= |
| 300 | // === Generate messages in JSON object node format |
| 301 | |
| 302 | private Highlights trafficSummary(LinkStatsType type) { |
| 303 | Highlights highlights = new Highlights(); |
| 304 | |
| 305 | // compile a set of bilinks (combining pairs of unidirectional links) |
| 306 | Map<LinkKey, BiLink> linkMap = new HashMap<>(); |
| 307 | compileLinks(linkMap); |
| 308 | addEdgeLinks(linkMap); |
| 309 | |
| 310 | for (BiLink blink : linkMap.values()) { |
| 311 | if (type == LinkStatsType.FLOW_STATS) { |
| 312 | attachFlowLoad(blink); |
| 313 | } else if (type == LinkStatsType.PORT_STATS) { |
| 314 | attachPortLoad(blink); |
| 315 | } |
| 316 | |
| 317 | // we only want to report on links deemed to have traffic |
| 318 | if (blink.hasTraffic()) { |
| 319 | highlights.add(blink.generateHighlight(type)); |
| 320 | } |
| 321 | } |
| 322 | return highlights; |
| 323 | } |
| 324 | |
| 325 | // create highlights for links, showing flows for selected devices. |
| 326 | private Highlights deviceLinkFlows() { |
| 327 | Highlights highlights = new Highlights(); |
| 328 | |
| 329 | if (selectedNodes != null && !selectedNodes.devices().isEmpty()) { |
| 330 | // capture flow counts on bilinks |
| 331 | Map<LinkKey, BiLink> linkMap = new HashMap<>(); |
| 332 | |
| 333 | for (Device device : selectedNodes.devices()) { |
| 334 | Map<Link, Integer> counts = getLinkFlowCounts(device.id()); |
| 335 | for (Link link : counts.keySet()) { |
| 336 | BiLink blink = TopoUtils.addLink(linkMap, link); |
| 337 | blink.addFlows(counts.get(link)); |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | // now report on our collated links |
| 342 | for (BiLink blink : linkMap.values()) { |
| 343 | highlights.add(blink.generateHighlight(LinkStatsType.FLOW_COUNT)); |
| 344 | } |
| 345 | |
| 346 | } |
| 347 | return highlights; |
| 348 | } |
| 349 | |
| 350 | private Highlights intentGroup() { |
| 351 | Highlights highlights = new Highlights(); |
| 352 | |
| 353 | if (selectedIntents != null && !selectedIntents.none()) { |
| 354 | // If 'all' intents are selected, they will all have primary |
| 355 | // highlighting; otherwise, the specifically selected intent will |
| 356 | // have primary highlighting, and the remainder will have secondary |
| 357 | // highlighting. |
| 358 | Set<Intent> primary; |
| 359 | Set<Intent> secondary; |
| 360 | int count = selectedIntents.size(); |
| 361 | |
| 362 | Set<Intent> allBut = new HashSet<>(selectedIntents.intents()); |
| 363 | Intent current; |
| 364 | |
| 365 | if (selectedIntents.all()) { |
| 366 | primary = allBut; |
| 367 | secondary = Collections.emptySet(); |
| 368 | log.debug("Highlight all intents ({})", count); |
| 369 | } else { |
| 370 | current = selectedIntents.current(); |
| 371 | primary = new HashSet<>(); |
| 372 | primary.add(current); |
| 373 | allBut.remove(current); |
| 374 | secondary = allBut; |
| 375 | log.debug("Highlight intent: {} ([{}] of {})", |
| 376 | current.id(), selectedIntents.index(), count); |
| 377 | } |
| 378 | TrafficClass tc1 = new TrafficClass(PRIMARY_HIGHLIGHT, primary); |
| 379 | TrafficClass tc2 = new TrafficClass(SECONDARY_HIGHLIGHT, secondary); |
| 380 | // classify primary links after secondary (last man wins) |
| 381 | highlightIntents(highlights, tc2, tc1); |
| 382 | } |
| 383 | return highlights; |
| 384 | } |
| 385 | |
| 386 | private Highlights intentTraffic() { |
| 387 | Highlights highlights = new Highlights(); |
| 388 | |
| 389 | if (selectedIntents != null && selectedIntents.single()) { |
| 390 | Intent current = selectedIntents.current(); |
| 391 | Set<Intent> primary = new HashSet<>(); |
| 392 | primary.add(current); |
| 393 | log.debug("Highlight traffic for intent: {} ([{}] of {})", |
| 394 | current.id(), selectedIntents.index(), selectedIntents.size()); |
| 395 | TrafficClass tc1 = new TrafficClass(PRIMARY_HIGHLIGHT, primary, true); |
| 396 | highlightIntents(highlights, tc1); |
| 397 | } |
| 398 | return highlights; |
| 399 | } |
| 400 | |
| 401 | |
| 402 | // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| 403 | |
| 404 | private void compileLinks(Map<LinkKey, BiLink> linkMap) { |
| 405 | servicesBundle.linkService().getLinks() |
| 406 | .forEach(link -> TopoUtils.addLink(linkMap, link)); |
| 407 | } |
| 408 | |
| 409 | private void addEdgeLinks(Map<LinkKey, BiLink> biLinks) { |
| 410 | servicesBundle.hostService().getHosts().forEach(host -> { |
| 411 | TopoUtils.addLink(biLinks, createEdgeLink(host, true)); |
| 412 | TopoUtils.addLink(biLinks, createEdgeLink(host, false)); |
| 413 | }); |
| 414 | } |
| 415 | |
| 416 | private Load getLinkFlowLoad(Link link) { |
| 417 | if (link != null && link.src().elementId() instanceof DeviceId) { |
| 418 | return servicesBundle.flowStatsService().load(link); |
| 419 | } |
| 420 | return null; |
| 421 | } |
| 422 | |
| 423 | private void attachFlowLoad(BiLink link) { |
| 424 | link.addLoad(getLinkFlowLoad(link.one())); |
| 425 | link.addLoad(getLinkFlowLoad(link.two())); |
| 426 | } |
| 427 | |
| 428 | private void attachPortLoad(BiLink link) { |
| 429 | // For bi-directional traffic links, use |
| 430 | // the max link rate of either direction |
| 431 | // (we choose 'one' since we know that is never null) |
| 432 | Link one = link.one(); |
| 433 | Load egressSrc = servicesBundle.portStatsService().load(one.src()); |
| 434 | Load egressDst = servicesBundle.portStatsService().load(one.dst()); |
| 435 | // link.addLoad(maxLoad(egressSrc, egressDst), BPS_THRESHOLD); |
| 436 | link.addLoad(maxLoad(egressSrc, egressDst), 10); // FIXME - debug only |
| 437 | } |
| 438 | |
| 439 | private Load maxLoad(Load a, Load b) { |
| 440 | if (a == null) { |
| 441 | return b; |
| 442 | } |
| 443 | if (b == null) { |
| 444 | return a; |
| 445 | } |
| 446 | return a.rate() > b.rate() ? a : b; |
| 447 | } |
| 448 | |
| 449 | // --- |
| 450 | |
| 451 | // Counts all flow entries that egress on the links of the given device. |
| 452 | private Map<Link, Integer> getLinkFlowCounts(DeviceId deviceId) { |
| 453 | // get the flows for the device |
| 454 | List<FlowEntry> entries = new ArrayList<>(); |
| 455 | for (FlowEntry flowEntry : servicesBundle.flowService().getFlowEntries(deviceId)) { |
| 456 | entries.add(flowEntry); |
| 457 | } |
| 458 | |
| 459 | // get egress links from device, and include edge links |
| 460 | Set<Link> links = new HashSet<>(servicesBundle.linkService().getDeviceEgressLinks(deviceId)); |
| 461 | Set<Host> hosts = servicesBundle.hostService().getConnectedHosts(deviceId); |
| 462 | if (hosts != null) { |
| 463 | for (Host host : hosts) { |
| 464 | links.add(createEdgeLink(host, false)); |
| 465 | } |
| 466 | } |
| 467 | |
| 468 | // compile flow counts per link |
| 469 | Map<Link, Integer> counts = new HashMap<>(); |
| 470 | for (Link link : links) { |
| 471 | counts.put(link, getEgressFlows(link, entries)); |
| 472 | } |
| 473 | return counts; |
| 474 | } |
| 475 | |
| 476 | // Counts all entries that egress on the link source port. |
| 477 | private int getEgressFlows(Link link, List<FlowEntry> entries) { |
| 478 | int count = 0; |
| 479 | PortNumber out = link.src().port(); |
| 480 | for (FlowEntry entry : entries) { |
| 481 | TrafficTreatment treatment = entry.treatment(); |
| 482 | for (Instruction instruction : treatment.allInstructions()) { |
| 483 | if (instruction.type() == Instruction.Type.OUTPUT && |
| 484 | ((OutputInstruction) instruction).port().equals(out)) { |
| 485 | count++; |
| 486 | } |
| 487 | } |
| 488 | } |
| 489 | return count; |
| 490 | } |
| 491 | |
| 492 | // --- |
| 493 | private void highlightIntents(Highlights highlights, |
| 494 | TrafficClass... trafficClasses) { |
| 495 | Map<LinkKey, BiLink> linkMap = new HashMap<>(); |
| 496 | |
| 497 | |
| 498 | for (TrafficClass trafficClass : trafficClasses) { |
| 499 | classifyLinkTraffic(linkMap, trafficClass); |
| 500 | } |
| 501 | |
| 502 | for (BiLink blink : linkMap.values()) { |
| 503 | highlights.add(blink.generateHighlight(LinkStatsType.TAGGED)); |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | private void classifyLinkTraffic(Map<LinkKey, BiLink> linkMap, |
| 508 | TrafficClass trafficClass) { |
| 509 | for (Intent intent : trafficClass.intents()) { |
| 510 | boolean isOptical = intent instanceof OpticalConnectivityIntent; |
| 511 | List<Intent> installables = servicesBundle.intentService() |
| 512 | .getInstallableIntents(intent.key()); |
| 513 | Iterable<Link> links = null; |
| 514 | |
| 515 | if (installables != null) { |
| 516 | for (Intent installable : installables) { |
| 517 | |
| 518 | if (installable instanceof PathIntent) { |
| 519 | links = ((PathIntent) installable).path().links(); |
| 520 | } else if (installable instanceof FlowRuleIntent) { |
| 521 | links = linkResources(installable); |
| 522 | } else if (installable instanceof LinkCollectionIntent) { |
| 523 | links = ((LinkCollectionIntent) installable).links(); |
| 524 | } else if (installable instanceof OpticalPathIntent) { |
| 525 | links = ((OpticalPathIntent) installable).path().links(); |
| 526 | } |
| 527 | |
| 528 | classifyLinks(trafficClass, isOptical, linkMap, links); |
| 529 | } |
| 530 | } |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | private void classifyLinks(TrafficClass trafficClass, boolean isOptical, |
| 535 | Map<LinkKey, BiLink> linkMap, |
| 536 | Iterable<Link> links) { |
| 537 | if (links != null) { |
| 538 | for (Link link : links) { |
| 539 | BiLink blink = TopoUtils.addLink(linkMap, link); |
| 540 | if (trafficClass.showTraffic()) { |
| 541 | blink.addLoad(getLinkFlowLoad(link)); |
| 542 | blink.setAntMarch(true); |
| 543 | } |
| 544 | blink.setOptical(isOptical); |
| 545 | blink.tagFlavor(trafficClass.flavor()); |
| 546 | } |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | // Extracts links from the specified flow rule intent resources |
| 551 | private Collection<Link> linkResources(Intent installable) { |
| 552 | ImmutableList.Builder<Link> builder = ImmutableList.builder(); |
| 553 | installable.resources().stream().filter(r -> r instanceof Link) |
| 554 | .forEach(r -> builder.add((Link) r)); |
| 555 | return builder.build(); |
| 556 | } |
| 557 | |
| 558 | // ======================================================================= |
| 559 | // === Background Task |
| 560 | |
| 561 | // Provides periodic update of traffic information to the client |
| 562 | private class TrafficMonitor extends TimerTask { |
| 563 | @Override |
| 564 | public void run() { |
| 565 | try { |
| 566 | switch (mode) { |
| 567 | case ALL_FLOW_TRAFFIC: |
| 568 | sendAllFlowTraffic(); |
| 569 | break; |
| 570 | case ALL_PORT_TRAFFIC: |
| 571 | sendAllPortTraffic(); |
| 572 | break; |
| 573 | case DEV_LINK_FLOWS: |
| 574 | sendDeviceLinkFlows(); |
| 575 | break; |
| 576 | case SEL_INTENT: |
| 577 | sendSelectedIntentTraffic(); |
| 578 | break; |
| 579 | |
| 580 | default: |
| 581 | // RELATED_INTENTS and IDLE modes should never invoke |
| 582 | // the background task, but if they do, they have |
| 583 | // nothing to do |
| 584 | break; |
| 585 | } |
| 586 | |
| 587 | } catch (Exception e) { |
| 588 | log.warn("Unable to process traffic task due to {}", e.getMessage()); |
| 589 | log.warn("Boom!", e); |
| 590 | } |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | } |