Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Foundation |
| 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 | package org.onosproject.imr; |
| 18 | |
| 19 | import com.google.common.collect.ImmutableSet; |
| 20 | import org.apache.commons.lang3.tuple.Pair; |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 21 | import org.onlab.util.KryoNamespace; |
| 22 | import org.onosproject.core.ApplicationId; |
| 23 | import org.onosproject.imr.data.Path; |
| 24 | import org.onosproject.imr.data.Route; |
| 25 | import org.onosproject.net.ConnectPoint; |
| 26 | import org.onosproject.net.DeviceId; |
| 27 | import org.onosproject.net.ElementId; |
| 28 | import org.onosproject.net.FilteredConnectPoint; |
| 29 | import org.onosproject.net.Host; |
| 30 | import org.onosproject.net.HostId; |
| 31 | import org.onosproject.net.Link; |
| 32 | import org.onosproject.net.PortNumber; |
| 33 | import org.onosproject.net.flow.FlowEntry; |
| 34 | import org.onosproject.net.flow.FlowRule; |
| 35 | import org.onosproject.net.flow.FlowRuleEvent; |
| 36 | import org.onosproject.net.flow.FlowRuleListener; |
| 37 | import org.onosproject.net.flow.FlowRuleService; |
| 38 | import org.onosproject.net.flow.instructions.Instruction; |
| 39 | import org.onosproject.net.flow.instructions.Instructions; |
| 40 | import org.onosproject.net.host.HostService; |
| 41 | import org.onosproject.net.intent.ConnectivityIntent; |
| 42 | import org.onosproject.net.intent.FlowRuleIntent; |
| 43 | import org.onosproject.net.intent.Intent; |
| 44 | import org.onosproject.net.intent.IntentEvent; |
| 45 | import org.onosproject.net.intent.IntentListener; |
| 46 | import org.onosproject.net.intent.IntentService; |
| 47 | import org.onosproject.net.intent.IntentState; |
| 48 | import org.onosproject.net.intent.Key; |
| 49 | import org.onosproject.net.intent.LinkCollectionIntent; |
| 50 | import org.onosproject.net.intent.PointToPointIntent; |
| 51 | import org.onosproject.net.link.LinkService; |
| 52 | import org.onosproject.net.statistic.FlowStatisticStore; |
| 53 | import org.onosproject.store.serializers.KryoNamespaces; |
| 54 | import org.onosproject.store.service.ConsistentMap; |
| 55 | import org.onosproject.store.service.DistributedSet; |
| 56 | import org.onosproject.store.service.Serializer; |
| 57 | import org.onosproject.store.service.StorageService; |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 58 | import org.osgi.service.component.annotations.Activate; |
| 59 | import org.osgi.service.component.annotations.Component; |
| 60 | import org.osgi.service.component.annotations.Deactivate; |
| 61 | import org.osgi.service.component.annotations.Reference; |
| 62 | import org.osgi.service.component.annotations.ReferenceCardinality; |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 63 | import org.slf4j.Logger; |
| 64 | import org.slf4j.LoggerFactory; |
| 65 | |
| 66 | import java.util.ArrayList; |
Yuta HIGUCHI | 71f8e7b | 2018-04-12 10:30:27 -0700 | [diff] [blame] | 67 | import java.util.Comparator; |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 68 | import java.util.HashMap; |
| 69 | import java.util.HashSet; |
| 70 | import java.util.LinkedList; |
| 71 | import java.util.List; |
| 72 | import java.util.Map; |
| 73 | import java.util.Set; |
| 74 | import java.util.concurrent.ConcurrentHashMap; |
| 75 | import java.util.stream.Collectors; |
| 76 | import java.util.stream.IntStream; |
| 77 | |
| 78 | import static com.google.common.base.Preconditions.checkArgument; |
| 79 | import static com.google.common.base.Preconditions.checkNotNull; |
| 80 | |
| 81 | /** |
| 82 | * Manager of Intent Monitor and Reroute. |
| 83 | */ |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 84 | @Component(immediate = true, service = IntentMonitorAndRerouteService.class) |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 85 | public class IntentMonitorAndRerouteManager implements IntentMonitorAndRerouteService { |
| 86 | |
| 87 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 88 | |
| 89 | private ConsistentMap<ApplicationId, Map<Key, ConnectivityIntent>> monitoredIntentsDistr; |
| 90 | private Map<ApplicationId, Map<Key, ConnectivityIntent>> monitoredIntents; |
| 91 | |
| 92 | private DistributedSet<Key> toBeMonitoredIntents; |
| 93 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 94 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 95 | protected IntentService intentService; |
| 96 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 97 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 98 | protected FlowRuleService flowRuleService; |
| 99 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 100 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 101 | protected LinkService linkService; |
| 102 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 103 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 104 | protected HostService hostService; |
| 105 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 106 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 107 | protected FlowStatisticStore statsStore; |
| 108 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 109 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 110 | protected StorageService storageService; |
| 111 | |
| 112 | private InternalIntentListener intentListener = new InternalIntentListener(); |
| 113 | |
| 114 | private InternalFlowRuleListener flowRuleListener = new InternalFlowRuleListener(); |
| 115 | |
| 116 | @Activate |
| 117 | protected void activate() { |
| 118 | intentService.addListener(intentListener); |
| 119 | flowRuleService.addListener(flowRuleListener); |
| 120 | |
| 121 | monitoredIntentsDistr = storageService |
| 122 | .<ApplicationId, Map<Key, ConnectivityIntent>>consistentMapBuilder() |
| 123 | .withSerializer(Serializer.using(KryoNamespaces.API)) |
| 124 | .withName("IMR-monitoredIntents") |
| 125 | .build(); |
| 126 | monitoredIntents = monitoredIntentsDistr.asJavaMap(); |
| 127 | |
| 128 | toBeMonitoredIntents = storageService.<Key>setBuilder() |
| 129 | .withSerializer(Serializer.using( |
| 130 | new KryoNamespace.Builder() |
| 131 | .register(KryoNamespaces.API) |
| 132 | .register(Key.class) |
| 133 | .build())) |
| 134 | .withName("IMR-toMonitorIntents") |
| 135 | .build() |
| 136 | .asDistributedSet(); |
| 137 | log.info("IntentMonitorAndReroute activated"); |
| 138 | } |
| 139 | |
| 140 | @Deactivate |
| 141 | protected void deactivate() { |
| 142 | intentService.removeListener(intentListener); |
| 143 | flowRuleService.removeListener(flowRuleListener); |
| 144 | monitoredIntents |
| 145 | .forEach(((applicationId, keyConnectivityIntentMap) -> |
| 146 | keyConnectivityIntentMap.keySet() |
| 147 | .forEach(this::removeIntent))); |
| 148 | log.info("IntentMonitorAndReroute deactivated"); |
| 149 | } |
| 150 | |
| 151 | |
| 152 | private synchronized void storeMonitoredIntent(ConnectivityIntent intent) { |
| 153 | log.debug("Store Monitored Intent {}", intent.key()); |
| 154 | Map<Key, ConnectivityIntent> temp = monitoredIntents.getOrDefault(intent.appId(), new ConcurrentHashMap<>()); |
| 155 | temp.put(intent.key(), intent); |
| 156 | monitoredIntents.put(intent.appId(), temp); |
| 157 | } |
| 158 | |
| 159 | @Override |
| 160 | public synchronized boolean startMonitorIntent(Key intentKey) { |
| 161 | checkNotNull(intentKey, "Intent Key must not be null"); |
| 162 | log.debug("Start Monitor Intent: {}", intentKey.toString()); |
| 163 | toBeMonitoredIntents.add(intentKey); |
| 164 | |
| 165 | //Check if the requested intent is already present in the intent manager |
| 166 | Intent installedIntent = intentService.getIntent(intentKey); |
| 167 | if (!allowedIntent(installedIntent)) { |
| 168 | return false; |
| 169 | } |
| 170 | //Check if the intent that is present in the intent subsystem is already installed |
| 171 | if (intentService.getIntentState(intentKey) == IntentState.INSTALLED) { |
| 172 | storeMonitoredIntent((ConnectivityIntent) installedIntent); |
| 173 | } |
| 174 | return true; |
| 175 | } |
| 176 | |
| 177 | |
| 178 | /** |
| 179 | * Returns whether the intent can be monitored or not. |
| 180 | * @param intent The intent you want to check if it is allowed to be monitored. |
| 181 | * @return true if the intent's type is of one of the allowed types |
| 182 | * ({@link LinkCollectionIntent}, {@link PointToPointIntent}). |
| 183 | */ |
| 184 | public boolean allowedIntent(Intent intent) { |
| 185 | return intent instanceof LinkCollectionIntent || intent instanceof PointToPointIntent; |
| 186 | } |
| 187 | |
| 188 | @Override |
| 189 | public synchronized boolean stopMonitorIntent(Key intentKey) { |
| 190 | checkNotNull(intentKey, "Intent key must not be null"); |
| 191 | log.debug("Stop Monitor Intent: ", intentKey.toString()); |
| 192 | if (!toBeMonitoredIntents.contains(intentKey)) { |
| 193 | return false; |
| 194 | } |
| 195 | removeIntent(intentKey); |
| 196 | toBeMonitoredIntents.remove(intentKey); |
| 197 | return true; |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Removes the intent from the internal structure. |
| 202 | * @param intentKey Key of the intent to be removed. |
| 203 | * @return true if the intent is found and removed, false otherwise. |
| 204 | */ |
| 205 | private synchronized boolean removeIntent(Key intentKey) { |
| 206 | for (Map.Entry<ApplicationId, Map<Key, ConnectivityIntent>> appIntents |
| 207 | : monitoredIntents.entrySet()) { |
| 208 | if (appIntents.getValue().containsKey(intentKey)) { |
| 209 | appIntents.getValue().remove(intentKey); |
| 210 | //TODO: check if it works without reputting the map |
| 211 | flushIntentStatStore(intentKey); |
| 212 | monitoredIntents.put(appIntents.getKey(), appIntents.getValue()); |
| 213 | if (appIntents.getValue().isEmpty()) { |
| 214 | monitoredIntents.remove(appIntents.getKey()); |
| 215 | } |
| 216 | return true; |
| 217 | } |
| 218 | } |
| 219 | return false; |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * Flushes the statistics (from the statistics store) of an intent. |
| 224 | * @param intentKey Key of the intent which statistics has to be cleaned. |
| 225 | */ |
| 226 | private synchronized void flushIntentStatStore(Key intentKey) { |
| 227 | checkNotNull(intentKey); |
| 228 | //Remove all the flow rule on the stats store related to the passed intentKey |
| 229 | intentService.getInstallableIntents(intentKey) |
| 230 | .stream() |
| 231 | .map(intent -> (FlowRuleIntent) intent) |
| 232 | .forEach(intent -> intent.flowRules() |
| 233 | .forEach(flowRule -> statsStore.removeFlowStatistic(flowRule)) |
| 234 | ); |
| 235 | } |
| 236 | |
| 237 | |
| 238 | /** |
| 239 | * Generates a new {@Link LinkCollectionIntent} applying the new path. |
| 240 | * @param links List of links of the new path. |
| 241 | * @param intentKey Key of the intent you want to re-route. |
| 242 | * @param appId Application id that submits initially the intent. |
| 243 | * @return The new intent, if not possibile it will return the old intent already installed. |
| 244 | */ |
| 245 | private ConnectivityIntent generateLinkCollectionIntent( |
| 246 | List<Link> links, |
| 247 | Key intentKey, |
| 248 | ApplicationId appId) { |
| 249 | checkNotNull(links); |
| 250 | checkNotNull(appId); |
| 251 | |
| 252 | // Gets the oldIntent already installed |
| 253 | ConnectivityIntent oldIntent = monitoredIntents.get(appId).get(intentKey); |
| 254 | |
| 255 | //Flush the statistics of the currently installed intent |
| 256 | flushIntentStatStore(intentKey); |
| 257 | |
| 258 | //get the connect point of the old intent |
| 259 | // Left element of the Pair is the ingress, right one is the egress |
| 260 | Pair<Set<FilteredConnectPoint>, Set<FilteredConnectPoint>> cpPair = extractEndConnectPoints(oldIntent); |
| 261 | if (cpPair == null) { |
| 262 | return oldIntent; |
| 263 | } |
| 264 | |
| 265 | // Now generate the new intent |
| 266 | LinkCollectionIntent newIntent = LinkCollectionIntent.builder() |
| 267 | .appId(oldIntent.appId()) |
| 268 | .key(intentKey) |
| 269 | .selector(oldIntent.selector()) |
| 270 | .filteredIngressPoints(ImmutableSet.copyOf(cpPair.getLeft())) |
| 271 | .filteredEgressPoints(ImmutableSet.copyOf(cpPair.getRight())) |
| 272 | .treatment(oldIntent.treatment()) |
| 273 | .priority(oldIntent.priority()) |
| 274 | .constraints(oldIntent.constraints()) |
| 275 | .links(ImmutableSet.copyOf(links)) |
| 276 | //TODO: is there a way to get from the old intent? |
| 277 | .applyTreatmentOnEgress(true) |
| 278 | .build(); |
| 279 | |
| 280 | return newIntent; |
| 281 | } |
| 282 | |
| 283 | @Override |
| 284 | public boolean applyPath(Route route) { |
| 285 | checkNotNull(route, "Route to apply must be not null"); |
| 286 | checkNotNull(route.appId(), "Application id must be not null"); |
| 287 | checkNotNull(route.key(), "Intent key to apply must be not null"); |
| 288 | checkNotNull(route.paths(), "New path must be not null"); |
| 289 | checkArgument(route.paths().size() >= 1); |
| 290 | |
| 291 | ApplicationId appId = route.appId(); |
| 292 | Key key = route.key(); |
| 293 | |
| 294 | // check if the app and the intent key are monitored |
| 295 | if (!monitoredIntents.containsKey(appId)) { |
| 296 | return false; |
| 297 | } |
| 298 | if (!monitoredIntents.get(appId).containsKey(key)) { |
| 299 | return false; |
| 300 | } |
| 301 | |
| 302 | // TODO: now we manage only the unsplittable routing |
| 303 | Path currentPath = route.paths() |
| 304 | .stream() |
Yuta HIGUCHI | 71f8e7b | 2018-04-12 10:30:27 -0700 | [diff] [blame] | 305 | .max(Comparator.comparing(Path::weight)) |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 306 | .get(); |
| 307 | |
| 308 | // Check if the last and first element of the path are HostId |
| 309 | // in this case remove them from the list |
| 310 | if (currentPath.path().get(0) instanceof HostId) { |
| 311 | currentPath.path().remove(0); |
| 312 | } |
| 313 | if (currentPath.path().get(currentPath.path().size() - 1) instanceof HostId) { |
| 314 | currentPath.path().remove(currentPath.path().size() - 1); |
| 315 | } |
| 316 | |
| 317 | List<Link> links = createPathFromDeviceList(currentPath.path()); |
| 318 | |
| 319 | // Generate the new Link collection intent, if not possible it will return the old intent |
| 320 | ConnectivityIntent intent = generateLinkCollectionIntent(links, key, appId); |
| 321 | storeMonitoredIntent(intent); |
| 322 | intentService.submit(intent); |
| 323 | return true; |
| 324 | } |
| 325 | |
| 326 | @Override |
| 327 | public Map<ApplicationId, Map<Key, List<FlowEntry>>> getStats() { |
| 328 | //TODO: check if there is a better way to get the statistics |
| 329 | Map<ApplicationId, Map<Key, List<FlowEntry>>> currentStatistics = new HashMap<>(); |
| 330 | monitoredIntents.forEach((appId, mapIntentKey) -> |
| 331 | currentStatistics.putAll(getStats(appId)) |
| 332 | ); |
| 333 | return currentStatistics; |
| 334 | } |
| 335 | |
| 336 | @Override |
| 337 | public Map<ApplicationId, Map<Key, List<FlowEntry>>> getStats(ApplicationId appId) { |
| 338 | checkNotNull(appId); |
| 339 | |
| 340 | //TODO: is there a better way to get statistics? |
| 341 | Map<ApplicationId, Map<Key, List<FlowEntry>>> currentStatistics = new HashMap<>(); |
| 342 | currentStatistics.put(appId, new HashMap<>()); |
| 343 | if (monitoredIntents.containsKey(appId)) { |
| 344 | Set<Key> keySet = monitoredIntents.get(appId).keySet(); |
| 345 | for (Key intentKey : keySet) { |
| 346 | |
| 347 | List<FlowEntry> flowEntries = getStats(intentKey); |
| 348 | currentStatistics.get(appId).put(intentKey, flowEntries); |
| 349 | } |
| 350 | } |
| 351 | return currentStatistics; |
| 352 | } |
| 353 | |
| 354 | @Override |
| 355 | public Map<ApplicationId, Map<Key, List<FlowEntry>>> getStats(ApplicationId appId, Key intentKey) { |
| 356 | checkNotNull(appId); |
| 357 | checkNotNull(intentKey); |
| 358 | checkArgument(monitoredIntents.containsKey(appId)); |
| 359 | checkArgument(monitoredIntents.get(appId).containsKey(intentKey)); |
| 360 | |
| 361 | Map<ApplicationId, Map<Key, List<FlowEntry>>> currentStatistics = new HashMap<>(); |
| 362 | currentStatistics.put(appId, new HashMap<>()); |
| 363 | List<FlowEntry> flowEntries = getStats(intentKey); |
| 364 | currentStatistics.get(appId).put(intentKey, flowEntries); |
| 365 | return currentStatistics; |
| 366 | } |
| 367 | |
| 368 | /** |
| 369 | * Returns the list of flow entries of a particular intent. |
| 370 | * @param intentKey |
| 371 | * @return List of the flow entries of the specified intent, |
| 372 | * it contains all the statistics of that intent. |
| 373 | */ |
| 374 | private List<FlowEntry> getStats(Key intentKey) { |
| 375 | List<FlowEntry> currentStatistics = new LinkedList<>(); |
| 376 | intentService.getInstallableIntents(intentKey) |
| 377 | .forEach(intent -> ((FlowRuleIntent) intent).flowRules() |
| 378 | .forEach(flowRule -> { |
| 379 | ConnectPoint cp = buildConnectPoint(flowRule); |
| 380 | currentStatistics.addAll(getStats(cp, flowRule)); |
| 381 | }) |
| 382 | ); |
| 383 | return currentStatistics; |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * Returns a list of flow entry related to the connect point and flow rule passed. |
| 388 | * @param cp ConnectPoint we want to retrieve the flow entry from. |
| 389 | * @param flowRule FlowRule. |
| 390 | * @return List of flow entries. |
| 391 | */ |
| 392 | private List<FlowEntry> getStats(ConnectPoint cp, FlowRule flowRule) { |
| 393 | return statsStore.getCurrentFlowStatistic(cp) |
| 394 | .stream() |
| 395 | .filter(flowEntry -> flowEntry |
| 396 | .id() |
| 397 | .equals(flowRule.id())) |
| 398 | .collect(Collectors.toList()); |
| 399 | } |
| 400 | |
| 401 | /** |
| 402 | * Returns a list of links starting from a list of devices. |
| 403 | * @param deviceList List of devices. |
| 404 | * @return A path in terms of list of links. |
| 405 | */ |
| 406 | private List<Link> createPathFromDeviceList(List<ElementId> deviceList) { |
| 407 | List<Link> path = new ArrayList<>(); |
| 408 | if (deviceList.size() == 1) { |
| 409 | return path; |
| 410 | } |
| 411 | |
| 412 | // Left element represents the input and right the output |
| 413 | List<Pair<DeviceId, DeviceId>> devicePairs = IntStream. |
| 414 | range(0, deviceList.size() - 1) |
| 415 | .mapToObj(i -> Pair.of((DeviceId) deviceList.get(i), (DeviceId) deviceList.get(i + 1))) |
| 416 | .collect(Collectors.toList()); |
| 417 | |
| 418 | devicePairs.forEach(pair -> { |
| 419 | //TODO use GetPath pair by pair? |
| 420 | // The common Link between DevEgress and DevIngress is the intersection of their links |
| 421 | Set<Link> commonLinks = new HashSet<>(linkService.getDeviceEgressLinks(pair.getLeft())); |
| 422 | commonLinks.retainAll(linkService.getDeviceIngressLinks(pair.getRight())); |
| 423 | if (commonLinks.size() == 0) { |
| 424 | log.error("No link found between node {} and node {}!", |
| 425 | pair.getLeft(), pair.getRight()); |
| 426 | } else if (commonLinks.size() == 1) { |
| 427 | path.add(commonLinks.iterator().next()); |
| 428 | } else { |
| 429 | //TODO select the one with more bandwidth? |
| 430 | log.warn("{} links found between node {} and node {}: taking the first one!", |
| 431 | commonLinks.size(), pair.getLeft(), pair.getRight()); |
| 432 | path.add(commonLinks.iterator().next()); |
| 433 | } |
| 434 | }); |
| 435 | |
| 436 | return path; |
| 437 | } |
| 438 | |
Yuta HIGUCHI | 71f8e7b | 2018-04-12 10:30:27 -0700 | [diff] [blame] | 439 | @Override |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 440 | public Map<ApplicationId, Map<Key, Pair<Set<ElementId>, Set<ElementId>>>> getMonitoredIntents() { |
| 441 | Map<ApplicationId, Map<Key, Pair<Set<ElementId>, Set<ElementId>>>> currentMonitoredIntents |
| 442 | = new ConcurrentHashMap<>(); |
| 443 | monitoredIntents.forEach((appId, appIntents) -> { |
| 444 | currentMonitoredIntents.put(appId, new ConcurrentHashMap<>()); |
| 445 | appIntents.forEach((intentKey, intent) -> { |
| 446 | Pair<Set<ElementId>, Set<ElementId>> endPair = extractEndPoints(intent); |
| 447 | if (endPair != null) { |
| 448 | currentMonitoredIntents.get(appId).put(intentKey, endPair); |
| 449 | } |
| 450 | }); |
| 451 | }); |
| 452 | return currentMonitoredIntents; |
| 453 | } |
| 454 | |
Yuta HIGUCHI | 71f8e7b | 2018-04-12 10:30:27 -0700 | [diff] [blame] | 455 | @Override |
Davide Sanvito | 05983ba | 2017-12-01 11:46:44 +0100 | [diff] [blame] | 456 | public Map<ApplicationId, Map<Key, Pair<Set<ElementId>, Set<ElementId>>>> getMonitoredIntents( |
| 457 | ApplicationId appId) { |
| 458 | Map<ApplicationId, Map<Key, Pair<Set<ElementId>, Set<ElementId>>>> currentMonitoredIntents |
| 459 | = new ConcurrentHashMap<>(); |
| 460 | currentMonitoredIntents.put(appId, new ConcurrentHashMap<>()); |
| 461 | if (monitoredIntents.containsKey(appId)) { |
| 462 | monitoredIntents.get(appId).forEach((intentKey, intent) -> { |
| 463 | Pair<Set<ElementId>, Set<ElementId>> endPair = extractEndPoints(intent); |
| 464 | if (endPair != null) { |
| 465 | currentMonitoredIntents.get(appId).put(intentKey, endPair); |
| 466 | } |
| 467 | }); |
| 468 | } |
| 469 | return currentMonitoredIntents; |
| 470 | } |
| 471 | |
| 472 | private Set<ElementId> connectedElements(Set<FilteredConnectPoint> cpSet) { |
| 473 | Set<ElementId> connectedElem = new HashSet<>(); |
| 474 | cpSet.forEach( |
| 475 | fcp -> { |
| 476 | Set<Host> connectedHosts = hostService.getConnectedHosts(fcp.connectPoint()); |
| 477 | if (connectedHosts.size() == 0) { |
| 478 | // In this case the end point is an ELEMENT without host connected |
| 479 | connectedElem.add(fcp.connectPoint().elementId()); |
| 480 | } else { |
| 481 | // In this case we can have a set of hosts connected to that endpoint |
| 482 | connectedElem.addAll(connectedHosts.stream().map(Host::id) |
| 483 | .collect(Collectors.toSet())); |
| 484 | } |
| 485 | } |
| 486 | ); |
| 487 | return connectedElem; |
| 488 | } |
| 489 | |
| 490 | /** |
| 491 | * Extracts the endpoint from an intent. |
| 492 | * @param intent |
| 493 | * @return {@link Pair} containing in the Left element the set of input {@link ElementId}, |
| 494 | * in the Right element the set of output {@link ElementId}. |
| 495 | */ |
| 496 | private Pair<Set<ElementId>, Set<ElementId>> extractEndPoints(Intent intent) { |
| 497 | checkNotNull(intent, "intent must not be null"); |
| 498 | Pair<Set<FilteredConnectPoint>, Set<FilteredConnectPoint>> cpPair; |
| 499 | cpPair = extractEndConnectPoints(intent); |
| 500 | if (cpPair == null) { |
| 501 | return null; |
| 502 | } |
| 503 | return Pair.of(connectedElements(cpPair.getLeft()), connectedElements(cpPair.getRight())); |
| 504 | } |
| 505 | |
| 506 | /** |
| 507 | * Returns the end connect points of an intent. |
| 508 | * @param intent |
| 509 | * @return {@link Pair} containing in the Left element the input end connect points, |
| 510 | * in the Right element the output end connect points. |
| 511 | */ |
| 512 | private Pair<Set<FilteredConnectPoint>, Set<FilteredConnectPoint>> extractEndConnectPoints(Intent intent) { |
| 513 | checkNotNull(intent, "intent must not be null"); |
| 514 | |
| 515 | Set<FilteredConnectPoint> inSet = new HashSet<>(); |
| 516 | Set<FilteredConnectPoint> outSet = new HashSet<>(); |
| 517 | if (intent instanceof PointToPointIntent) { |
| 518 | inSet.add(((PointToPointIntent) intent).filteredIngressPoint()); |
| 519 | outSet.add(((PointToPointIntent) intent).filteredEgressPoint()); |
| 520 | } else if (intent instanceof LinkCollectionIntent) { |
| 521 | inSet.addAll(((LinkCollectionIntent) intent).filteredIngressPoints()); |
| 522 | outSet.addAll(((LinkCollectionIntent) intent).filteredEgressPoints()); |
| 523 | } |
| 524 | return Pair.of(inSet, outSet); |
| 525 | } |
| 526 | |
| 527 | /** |
| 528 | * Returns the connect point related to the output port of the rule. |
| 529 | * @param rule |
| 530 | * @return |
| 531 | */ |
| 532 | private ConnectPoint buildConnectPoint(FlowRule rule) { |
| 533 | PortNumber port = getOutput(rule); |
| 534 | |
| 535 | if (port == null) { |
| 536 | return null; |
| 537 | } |
| 538 | return new ConnectPoint(rule.deviceId(), port); |
| 539 | } |
| 540 | |
| 541 | /** |
| 542 | * Returns the output port related to the rule. |
| 543 | * @param rule |
| 544 | * @return |
| 545 | */ |
| 546 | private PortNumber getOutput(FlowRule rule) { |
| 547 | for (Instruction i : rule.treatment().allInstructions()) { |
| 548 | if (i.type() == Instruction.Type.OUTPUT) { |
| 549 | Instructions.OutputInstruction out = (Instructions.OutputInstruction) i; |
| 550 | return out.port(); |
| 551 | } |
| 552 | } |
| 553 | return null; |
| 554 | } |
| 555 | |
| 556 | |
| 557 | private class InternalIntentListener implements IntentListener { |
| 558 | |
| 559 | @Override |
| 560 | public void event(IntentEvent event) { |
| 561 | // It receives only events related to ConnectivityIntent to be monitored |
| 562 | Key intentKey = event.subject().key(); |
| 563 | switch (event.type()) { |
| 564 | case INSTALLED: |
| 565 | // When an intent is installed and it need to be monitored |
| 566 | // it will pass from the "toBeMonitored" state to the "monitored" state |
| 567 | log.info("Monitored intent INSTALLED"); |
| 568 | storeMonitoredIntent((ConnectivityIntent) event.subject()); |
| 569 | break; |
| 570 | |
| 571 | case WITHDRAWN: |
| 572 | // When an intent is withdrawn |
| 573 | // it will go back from the "monitored" state to the "toBeMonitored" |
| 574 | log.info("Monitored intent WITHDWRAWN"); |
| 575 | removeIntent(intentKey); |
| 576 | break; |
| 577 | |
| 578 | case FAILED: |
| 579 | log.warn("FAILED event not handled"); |
| 580 | break; |
| 581 | default: |
| 582 | log.warn("Unknown intent event"); |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | @Override |
| 587 | public boolean isRelevant(IntentEvent event) { |
| 588 | /* |
| 589 | * Check if the Intent event is relevant. |
| 590 | * An intent event is relevant if it is of one of the allowed types |
| 591 | * and if it is one of the monitored ones. |
| 592 | */ |
| 593 | Key intentKey = event.subject().key(); |
| 594 | return allowedIntent(event.subject()) |
| 595 | && toBeMonitoredIntents.contains(intentKey); |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | private class InternalFlowRuleListener implements FlowRuleListener { |
| 600 | @Override |
| 601 | public void event(FlowRuleEvent event) { |
| 602 | FlowRule rule = event.subject(); |
| 603 | switch (event.type()) { |
| 604 | case RULE_ADDED: |
| 605 | case RULE_UPDATED: |
| 606 | // In case of rule update, flow statistics are updated |
| 607 | if (rule instanceof FlowEntry) { |
| 608 | statsStore.updateFlowStatistic((FlowEntry) rule); |
| 609 | } |
| 610 | break; |
| 611 | case RULE_REMOVED: |
| 612 | // In case of rule removal, flow statistics are removed from the store |
| 613 | log.info("Rule removed: {}", rule.id()); |
| 614 | statsStore.removeFlowStatistic(rule); |
| 615 | break; |
| 616 | default: |
| 617 | log.warn("Unknown flow rule event"); |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | @Override |
| 622 | public boolean isRelevant(FlowRuleEvent event) { |
| 623 | /* |
| 624 | * Check if the rule event is relevant and it needs to be managed |
| 625 | * A Rule event is relevant if the flow rule it refers to is |
| 626 | * part of one of the monitored intents |
| 627 | */ |
| 628 | FlowRule rule = event.subject(); |
| 629 | for (Map.Entry<ApplicationId, Map<Key, ConnectivityIntent>> entry : monitoredIntents.entrySet()) { |
| 630 | for (Key key : entry.getValue().keySet()) { |
| 631 | List<Intent> ints = intentService.getInstallableIntents(key); |
| 632 | for (Intent i : ints) { |
| 633 | if (i instanceof FlowRuleIntent |
| 634 | && ((FlowRuleIntent) i).flowRules().contains(rule)) { |
| 635 | return true; |
| 636 | } |
| 637 | } |
| 638 | } |
| 639 | } |
| 640 | return false; |
| 641 | } |
| 642 | } |
| 643 | } |