Charles Chan | f7b1b4b | 2019-01-16 15:30:39 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-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.portloadbalancer.app; |
| 18 | |
| 19 | import com.google.common.collect.ImmutableMap; |
| 20 | import com.google.common.collect.Sets; |
| 21 | import org.osgi.service.component.annotations.Activate; |
| 22 | import org.osgi.service.component.annotations.Component; |
| 23 | import org.osgi.service.component.annotations.Deactivate; |
| 24 | import org.osgi.service.component.annotations.Reference; |
| 25 | import org.osgi.service.component.annotations.ReferenceCardinality; |
| 26 | import org.onlab.util.KryoNamespace; |
| 27 | import org.onosproject.cluster.ClusterService; |
| 28 | import org.onosproject.cluster.LeadershipService; |
| 29 | import org.onosproject.cluster.NodeId; |
| 30 | import org.onosproject.core.ApplicationId; |
| 31 | import org.onosproject.core.CoreService; |
| 32 | import org.onosproject.portloadbalancer.api.PortLoadBalancer; |
| 33 | import org.onosproject.portloadbalancer.api.PortLoadBalancerData; |
| 34 | import org.onosproject.portloadbalancer.api.PortLoadBalancerEvent; |
| 35 | import org.onosproject.portloadbalancer.api.PortLoadBalancerAdminService; |
| 36 | import org.onosproject.portloadbalancer.api.PortLoadBalancerId; |
| 37 | import org.onosproject.portloadbalancer.api.PortLoadBalancerListener; |
| 38 | import org.onosproject.portloadbalancer.api.PortLoadBalancerMode; |
| 39 | import org.onosproject.portloadbalancer.api.PortLoadBalancerService; |
| 40 | import org.onosproject.mastership.MastershipService; |
| 41 | import org.onosproject.net.DeviceId; |
| 42 | import org.onosproject.net.PortNumber; |
| 43 | import org.onosproject.net.device.DeviceEvent; |
| 44 | import org.onosproject.net.device.DeviceListener; |
| 45 | import org.onosproject.net.device.DeviceService; |
| 46 | import org.onosproject.net.flow.DefaultTrafficSelector; |
| 47 | import org.onosproject.net.flow.DefaultTrafficTreatment; |
| 48 | import org.onosproject.net.flow.TrafficSelector; |
| 49 | import org.onosproject.net.flow.TrafficTreatment; |
| 50 | import org.onosproject.net.flow.instructions.Instruction; |
| 51 | import org.onosproject.net.flow.instructions.Instructions; |
| 52 | import org.onosproject.net.flowobjective.DefaultNextObjective; |
| 53 | import org.onosproject.net.flowobjective.DefaultNextTreatment; |
| 54 | import org.onosproject.net.flowobjective.FlowObjectiveService; |
| 55 | import org.onosproject.net.flowobjective.NextObjective; |
| 56 | import org.onosproject.net.flowobjective.Objective; |
| 57 | import org.onosproject.net.flowobjective.ObjectiveContext; |
| 58 | import org.onosproject.net.flowobjective.ObjectiveError; |
| 59 | import org.onosproject.store.serializers.KryoNamespaces; |
| 60 | import org.onosproject.store.service.ConsistentMap; |
| 61 | import org.onosproject.store.service.MapEvent; |
| 62 | import org.onosproject.store.service.MapEventListener; |
| 63 | import org.onosproject.store.service.Serializer; |
| 64 | import org.onosproject.store.service.StorageService; |
| 65 | import org.onosproject.store.service.Versioned; |
| 66 | import org.slf4j.Logger; |
| 67 | |
| 68 | import java.util.Collection; |
| 69 | import java.util.Map; |
| 70 | import java.util.Set; |
| 71 | import java.util.concurrent.ExecutorService; |
| 72 | import java.util.concurrent.Executors; |
| 73 | import java.util.stream.Collectors; |
| 74 | |
| 75 | import static org.onlab.util.Tools.groupedThreads; |
| 76 | import static org.slf4j.LoggerFactory.getLogger; |
| 77 | |
| 78 | @Component( |
| 79 | immediate = true, |
| 80 | service = { PortLoadBalancerService.class, PortLoadBalancerAdminService.class } |
| 81 | ) |
| 82 | public class PortLoadBalancerManager implements PortLoadBalancerService, PortLoadBalancerAdminService { |
| 83 | |
| 84 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 85 | private CoreService coreService; |
| 86 | |
| 87 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 88 | private StorageService storageService; |
| 89 | |
| 90 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 91 | private FlowObjectiveService flowObjService; |
| 92 | |
| 93 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 94 | private MastershipService mastershipService; |
| 95 | |
| 96 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 97 | private LeadershipService leadershipService; |
| 98 | |
| 99 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 100 | private ClusterService clusterService; |
| 101 | |
| 102 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| 103 | private DeviceService deviceService; |
| 104 | |
| 105 | private static final Logger log = getLogger(PortLoadBalancerManager.class); |
| 106 | private static final String APP_NAME = "org.onosproject.portloadbalancer"; |
| 107 | |
| 108 | private ApplicationId appId; |
| 109 | private ConsistentMap<PortLoadBalancerId, PortLoadBalancer> portLoadBalancerStore; |
| 110 | private ConsistentMap<PortLoadBalancerId, Integer> portLoadBalancerNextStore; |
| 111 | // TODO Evaluate if ResourceService is a better option |
| 112 | private ConsistentMap<PortLoadBalancerId, ApplicationId> portLoadBalancerResStore; |
| 113 | private Set<PortLoadBalancerListener> listeners = Sets.newConcurrentHashSet(); |
| 114 | |
| 115 | private ExecutorService portLoadBalancerEventExecutor; |
| 116 | private ExecutorService portLoadBalancerProvExecutor; |
| 117 | private ExecutorService deviceEventExecutor; |
| 118 | |
| 119 | private MapEventListener<PortLoadBalancerId, PortLoadBalancer> portLoadBalancerStoreListener; |
| 120 | // TODO build CLI to view and clear the next store |
| 121 | private MapEventListener<PortLoadBalancerId, Integer> portLoadBalancerNextStoreListener; |
| 122 | private MapEventListener<PortLoadBalancerId, ApplicationId> portLoadBalancerResStoreListener; |
| 123 | private final DeviceListener deviceListener = new InternalDeviceListener(); |
| 124 | |
| 125 | @Activate |
| 126 | public void activate() { |
| 127 | appId = coreService.registerApplication(APP_NAME); |
| 128 | |
| 129 | portLoadBalancerEventExecutor = Executors.newSingleThreadExecutor( |
| 130 | groupedThreads("portloadbalancer-event", "%d", log)); |
| 131 | portLoadBalancerProvExecutor = Executors.newSingleThreadExecutor( |
| 132 | groupedThreads("portloadbalancer-prov", "%d", log)); |
| 133 | deviceEventExecutor = Executors.newSingleThreadScheduledExecutor( |
| 134 | groupedThreads("portloadbalancer-dev-event", "%d", log)); |
| 135 | portLoadBalancerStoreListener = new PortLoadBalancerStoreListener(); |
| 136 | portLoadBalancerNextStoreListener = new PortLoadBalancerNextStoreListener(); |
| 137 | portLoadBalancerResStoreListener = new PortLoadBalancerResStoreListener(); |
| 138 | |
| 139 | KryoNamespace serializer = KryoNamespace.newBuilder() |
| 140 | .register(KryoNamespaces.API) |
| 141 | .register(PortLoadBalancer.class) |
| 142 | .register(PortLoadBalancerId.class) |
| 143 | .register(PortLoadBalancerMode.class) |
| 144 | .build(); |
| 145 | portLoadBalancerStore = storageService.<PortLoadBalancerId, PortLoadBalancer>consistentMapBuilder() |
| 146 | .withName("onos-portloadbalancer-store") |
| 147 | .withRelaxedReadConsistency() |
| 148 | .withSerializer(Serializer.using(serializer)) |
| 149 | .build(); |
| 150 | portLoadBalancerStore.addListener(portLoadBalancerStoreListener); |
| 151 | portLoadBalancerNextStore = storageService.<PortLoadBalancerId, Integer>consistentMapBuilder() |
| 152 | .withName("onos-portloadbalancer-next-store") |
| 153 | .withRelaxedReadConsistency() |
| 154 | .withSerializer(Serializer.using(serializer)) |
| 155 | .build(); |
| 156 | portLoadBalancerNextStore.addListener(portLoadBalancerNextStoreListener); |
| 157 | portLoadBalancerResStore = storageService.<PortLoadBalancerId, ApplicationId>consistentMapBuilder() |
| 158 | .withName("onos-portloadbalancer-res-store") |
| 159 | .withRelaxedReadConsistency() |
| 160 | .withSerializer(Serializer.using(serializer)) |
| 161 | .build(); |
| 162 | portLoadBalancerResStore.addListener(portLoadBalancerResStoreListener); |
| 163 | |
| 164 | deviceService.addListener(deviceListener); |
| 165 | |
| 166 | log.info("Started"); |
| 167 | } |
| 168 | |
| 169 | @Deactivate |
| 170 | public void deactivate() { |
| 171 | portLoadBalancerStore.removeListener(portLoadBalancerStoreListener); |
| 172 | portLoadBalancerNextStore.removeListener(portLoadBalancerNextStoreListener); |
| 173 | |
| 174 | portLoadBalancerEventExecutor.shutdown(); |
| 175 | portLoadBalancerProvExecutor.shutdown(); |
| 176 | deviceEventExecutor.shutdown(); |
| 177 | |
| 178 | log.info("Stopped"); |
| 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public void addListener(PortLoadBalancerListener listener) { |
| 183 | listeners.add(listener); |
| 184 | } |
| 185 | |
| 186 | @Override |
| 187 | public void removeListener(PortLoadBalancerListener listener) { |
| 188 | listeners.remove(listener); |
| 189 | } |
| 190 | |
| 191 | @Override |
| 192 | public PortLoadBalancer createOrUpdate(PortLoadBalancerId portLoadBalancerId, Set<PortNumber> ports, |
| 193 | PortLoadBalancerMode mode) { |
| 194 | log.debug("Putting {} -> {} {} into port load balancer store", portLoadBalancerId, mode, ports); |
| 195 | return Versioned.valueOrNull(portLoadBalancerStore.put(portLoadBalancerId, |
| 196 | new PortLoadBalancer(portLoadBalancerId, ports, mode))); |
| 197 | } |
| 198 | |
| 199 | @Override |
| 200 | public PortLoadBalancer remove(PortLoadBalancerId portLoadBalancerId) { |
| 201 | ApplicationId reservation = Versioned.valueOrNull(portLoadBalancerResStore.get(portLoadBalancerId)); |
| 202 | // Remove only if it is not used - otherwise it is necessary to release first |
| 203 | if (reservation == null) { |
| 204 | log.debug("Removing {} from port load balancer store", portLoadBalancerId); |
| 205 | return Versioned.valueOrNull(portLoadBalancerStore.remove(portLoadBalancerId)); |
| 206 | } |
| 207 | log.warn("Removal {} from port load balancer store was not possible " + |
| 208 | "due to a previous reservation", portLoadBalancerId); |
| 209 | return null; |
| 210 | } |
| 211 | |
| 212 | @Override |
| 213 | public Map<PortLoadBalancerId, PortLoadBalancer> getPortLoadBalancers() { |
| 214 | return ImmutableMap.copyOf(portLoadBalancerStore.asJavaMap()); |
| 215 | } |
| 216 | |
| 217 | @Override |
| 218 | public PortLoadBalancer getPortLoadBalancer(PortLoadBalancerId portLoadBalancerId) { |
| 219 | return Versioned.valueOrNull(portLoadBalancerStore.get(portLoadBalancerId)); |
| 220 | } |
| 221 | |
| 222 | @Override |
| 223 | public Map<PortLoadBalancerId, Integer> getPortLoadBalancerNexts() { |
| 224 | return ImmutableMap.copyOf(portLoadBalancerNextStore.asJavaMap()); |
| 225 | } |
| 226 | |
| 227 | @Override |
| 228 | public int getPortLoadBalancerNext(PortLoadBalancerId portLoadBalancerId) { |
| 229 | return Versioned.valueOrNull(portLoadBalancerNextStore.get(portLoadBalancerId)); |
| 230 | } |
| 231 | |
| 232 | @Override |
| 233 | public boolean reserve(PortLoadBalancerId portLoadBalancerId, ApplicationId appId) { |
| 234 | // Check if the resource is available |
| 235 | ApplicationId reservation = Versioned.valueOrNull(portLoadBalancerResStore.get(portLoadBalancerId)); |
| 236 | PortLoadBalancer portLoadBalancer = Versioned.valueOrNull(portLoadBalancerStore.get(portLoadBalancerId)); |
| 237 | if (reservation == null && portLoadBalancer != null) { |
| 238 | log.debug("Reserving {} -> {} into port load balancer reservation store", portLoadBalancerId, appId); |
| 239 | return portLoadBalancerResStore.put(portLoadBalancerId, appId) == null; |
| 240 | } else if (reservation != null && reservation.equals(appId)) { |
| 241 | // App try to reserve the resource a second time |
| 242 | log.debug("Already reserved {} -> {} skip reservation", portLoadBalancerId, appId); |
| 243 | return true; |
| 244 | } |
| 245 | log.warn("Reservation failed {} -> {}", portLoadBalancerId, appId); |
| 246 | return false; |
| 247 | } |
| 248 | |
| 249 | @Override |
| 250 | public boolean release(PortLoadBalancerId portLoadBalancerId, ApplicationId appId) { |
| 251 | // Check if the resource is reserved |
| 252 | ApplicationId reservation = Versioned.valueOrNull(portLoadBalancerResStore.get(portLoadBalancerId)); |
| 253 | if (reservation != null && reservation.equals(appId)) { |
| 254 | log.debug("Removing {} -> {} from port load balancer reservation store", portLoadBalancerId, appId); |
| 255 | return portLoadBalancerResStore.remove(portLoadBalancerId) != null; |
| 256 | } |
| 257 | log.warn("Release failed {} -> {}", portLoadBalancerId, appId); |
| 258 | return false; |
| 259 | } |
| 260 | |
| 261 | @Override |
| 262 | public ApplicationId getReservation(PortLoadBalancerId portLoadBalancerId) { |
| 263 | return Versioned.valueOrNull(portLoadBalancerResStore.get(portLoadBalancerId)); |
| 264 | } |
| 265 | |
| 266 | @Override |
| 267 | public Map<PortLoadBalancerId, ApplicationId> getReservations() { |
| 268 | return portLoadBalancerResStore.asJavaMap(); |
| 269 | } |
| 270 | |
| 271 | private class PortLoadBalancerStoreListener implements MapEventListener<PortLoadBalancerId, PortLoadBalancer> { |
| 272 | public void event(MapEvent<PortLoadBalancerId, PortLoadBalancer> event) { |
| 273 | switch (event.type()) { |
| 274 | case INSERT: |
| 275 | log.debug("PortLoadBalancer {} insert new={}, old={}", event.key(), event.newValue(), |
| 276 | event.oldValue()); |
| 277 | post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.ADDED, event.newValue().value().data(), |
| 278 | null)); |
| 279 | populatePortLoadBalancer(event.newValue().value()); |
| 280 | break; |
| 281 | case REMOVE: |
| 282 | log.debug("PortLoadBalancer {} remove new={}, old={}", event.key(), event.newValue(), |
| 283 | event.oldValue()); |
| 284 | post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.REMOVED, null, |
| 285 | event.oldValue().value().data())); |
| 286 | revokePortLoadBalancer(event.oldValue().value()); |
| 287 | break; |
| 288 | case UPDATE: |
| 289 | log.debug("PortLoadBalancer {} update new={}, old={}", event.key(), event.newValue(), |
| 290 | event.oldValue()); |
| 291 | post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.UPDATED, event.newValue().value().data(), |
| 292 | event.oldValue().value().data())); |
| 293 | updatePortLoadBalancer(event.newValue().value(), event.oldValue().value()); |
| 294 | break; |
| 295 | default: |
| 296 | break; |
| 297 | } |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | private class PortLoadBalancerNextStoreListener implements MapEventListener<PortLoadBalancerId, Integer> { |
| 302 | public void event(MapEvent<PortLoadBalancerId, Integer> event) { |
| 303 | switch (event.type()) { |
| 304 | case INSERT: |
| 305 | log.debug("PortLoadBalancer next {} insert new={}, old={}", event.key(), event.newValue(), |
| 306 | event.oldValue()); |
| 307 | break; |
| 308 | case REMOVE: |
| 309 | log.debug("PortLoadBalancer next {} remove new={}, old={}", event.key(), event.newValue(), |
| 310 | event.oldValue()); |
| 311 | break; |
| 312 | case UPDATE: |
| 313 | log.debug("PortLoadBalancer next {} update new={}, old={}", event.key(), event.newValue(), |
| 314 | event.oldValue()); |
| 315 | break; |
| 316 | default: |
| 317 | break; |
| 318 | } |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | private class PortLoadBalancerResStoreListener implements MapEventListener<PortLoadBalancerId, ApplicationId> { |
| 323 | public void event(MapEvent<PortLoadBalancerId, ApplicationId> event) { |
| 324 | switch (event.type()) { |
| 325 | case INSERT: |
| 326 | log.debug("PortLoadBalancer reservation {} insert new={}, old={}", event.key(), event.newValue(), |
| 327 | event.oldValue()); |
| 328 | break; |
| 329 | case REMOVE: |
| 330 | log.debug("PortLoadBalancer reservation {} remove new={}, old={}", event.key(), event.newValue(), |
| 331 | event.oldValue()); |
| 332 | break; |
| 333 | case UPDATE: |
| 334 | log.debug("PortLoadBalancer reservation {} update new={}, old={}", event.key(), event.newValue(), |
| 335 | event.oldValue()); |
| 336 | break; |
| 337 | default: |
| 338 | break; |
| 339 | } |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | private class InternalDeviceListener implements DeviceListener { |
| 344 | // We want to manage only a subset of events and if we are the leader |
| 345 | @Override |
| 346 | public void event(DeviceEvent event) { |
| 347 | deviceEventExecutor.execute(() -> { |
| 348 | DeviceId deviceId = event.subject().id(); |
| 349 | if (!isLocalLeader(deviceId)) { |
| 350 | log.debug("Not the leader of {}. Skip event {}", deviceId, event); |
| 351 | return; |
| 352 | } |
| 353 | // Populate or revoke according to the device availability |
| 354 | if (deviceService.isAvailable(deviceId)) { |
| 355 | init(deviceId); |
| 356 | } else { |
| 357 | cleanup(deviceId); |
| 358 | } |
| 359 | }); |
| 360 | } |
| 361 | // Some events related to the devices are skipped |
| 362 | @Override |
| 363 | public boolean isRelevant(DeviceEvent event) { |
| 364 | return event.type() == DeviceEvent.Type.DEVICE_ADDED || |
| 365 | event.type() == DeviceEvent.Type.DEVICE_AVAILABILITY_CHANGED || |
| 366 | event.type() == DeviceEvent.Type.DEVICE_UPDATED; |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | private void post(PortLoadBalancerEvent portLoadBalancerEvent) { |
| 371 | portLoadBalancerEventExecutor.execute(() -> { |
| 372 | for (PortLoadBalancerListener l : listeners) { |
| 373 | if (l.isRelevant(portLoadBalancerEvent)) { |
| 374 | l.event(portLoadBalancerEvent); |
| 375 | } |
| 376 | } |
| 377 | }); |
| 378 | } |
| 379 | |
| 380 | private void init(DeviceId deviceId) { |
| 381 | portLoadBalancerStore.entrySet().stream() |
| 382 | .filter(portLoadBalancerEntry -> portLoadBalancerEntry.getKey().deviceId().equals(deviceId)) |
| 383 | .forEach(portLoadBalancerEntry -> populatePortLoadBalancer(portLoadBalancerEntry.getValue().value())); |
| 384 | } |
| 385 | |
| 386 | private void cleanup(DeviceId deviceId) { |
| 387 | portLoadBalancerStore.entrySet().stream() |
| 388 | .filter(entry -> entry.getKey().deviceId().equals(deviceId)) |
| 389 | .forEach(entry -> portLoadBalancerNextStore.remove(entry.getKey())); |
| 390 | log.debug("{} is removed from portLoadBalancerNextStore", deviceId); |
| 391 | } |
| 392 | |
| 393 | private void populatePortLoadBalancer(PortLoadBalancer portLoadBalancer) { |
| 394 | DeviceId deviceId = portLoadBalancer.portLoadBalancerId().deviceId(); |
| 395 | if (!isLocalLeader(deviceId)) { |
| 396 | log.debug("Not the leader of {}. Skip populatePortLoadBalancer {}", deviceId, |
| 397 | portLoadBalancer.portLoadBalancerId()); |
| 398 | return; |
| 399 | } |
| 400 | |
| 401 | portLoadBalancerProvExecutor.execute(() -> { |
| 402 | Integer nextid = Versioned.valueOrNull(portLoadBalancerNextStore |
| 403 | .get(portLoadBalancer.portLoadBalancerId())); |
| 404 | if (nextid == null) { |
| 405 | // Build a new context and new next objective |
| 406 | PortLoadBalancerObjectiveContext context = |
| 407 | new PortLoadBalancerObjectiveContext(portLoadBalancer.portLoadBalancerId()); |
| 408 | NextObjective nextObj = nextObjBuilder(portLoadBalancer.portLoadBalancerId(), |
| 409 | portLoadBalancer.ports(), nextid).add(context); |
| 410 | // Finally submit, store, and register the resource |
| 411 | flowObjService.next(deviceId, nextObj); |
| 412 | portLoadBalancerNextStore.put(portLoadBalancer.portLoadBalancerId(), nextObj.id()); |
| 413 | } else { |
| 414 | log.info("NextObj for {} already exists. Skip populatePortLoadBalancer", |
| 415 | portLoadBalancer.portLoadBalancerId()); |
| 416 | } |
| 417 | }); |
| 418 | } |
| 419 | |
| 420 | private void revokePortLoadBalancer(PortLoadBalancer portLoadBalancer) { |
| 421 | DeviceId deviceId = portLoadBalancer.portLoadBalancerId().deviceId(); |
| 422 | if (!isLocalLeader(deviceId)) { |
| 423 | log.debug("Not the leader of {}. Skip revokePortLoadBalancer {}", deviceId, |
| 424 | portLoadBalancer.portLoadBalancerId()); |
| 425 | return; |
| 426 | } |
| 427 | |
| 428 | portLoadBalancerProvExecutor.execute(() -> { |
| 429 | Integer nextid = Versioned.valueOrNull(portLoadBalancerNextStore.get(portLoadBalancer |
| 430 | .portLoadBalancerId())); |
| 431 | if (nextid != null) { |
| 432 | // Build a new context and remove old next objective |
| 433 | PortLoadBalancerObjectiveContext context = |
| 434 | new PortLoadBalancerObjectiveContext(portLoadBalancer.portLoadBalancerId()); |
| 435 | NextObjective nextObj = nextObjBuilder(portLoadBalancer.portLoadBalancerId(), portLoadBalancer.ports(), |
| 436 | nextid).remove(context); |
| 437 | // Finally submit and invalidate the store |
| 438 | flowObjService.next(deviceId, nextObj); |
| 439 | portLoadBalancerNextStore.remove(portLoadBalancer.portLoadBalancerId()); |
| 440 | } else { |
| 441 | log.info("NextObj for {} does not exist. Skip revokePortLoadBalancer", |
| 442 | portLoadBalancer.portLoadBalancerId()); |
| 443 | } |
| 444 | }); |
| 445 | } |
| 446 | |
| 447 | private void updatePortLoadBalancer(PortLoadBalancer newPortLoadBalancer, PortLoadBalancer oldPortLoadBalancer) { |
| 448 | DeviceId deviceId = newPortLoadBalancer.portLoadBalancerId().deviceId(); |
| 449 | if (!isLocalLeader(deviceId)) { |
| 450 | log.debug("Not the leader of {}. Skip updatePortLoadBalancer {}", deviceId, |
| 451 | newPortLoadBalancer.portLoadBalancerId()); |
| 452 | return; |
| 453 | } |
| 454 | |
| 455 | portLoadBalancerProvExecutor.execute(() -> { |
| 456 | Integer nextid = Versioned.valueOrNull(portLoadBalancerNextStore |
| 457 | .get(newPortLoadBalancer.portLoadBalancerId())); |
| 458 | if (nextid != null) { |
| 459 | // Compute modifications and context |
| 460 | PortLoadBalancerObjectiveContext context = |
| 461 | new PortLoadBalancerObjectiveContext(newPortLoadBalancer.portLoadBalancerId()); |
| 462 | Set<PortNumber> portsToBeAdded = |
| 463 | Sets.difference(newPortLoadBalancer.ports(), oldPortLoadBalancer.ports()); |
| 464 | Set<PortNumber> portsToBeRemoved = |
| 465 | Sets.difference(oldPortLoadBalancer.ports(), newPortLoadBalancer.ports()); |
| 466 | // and send them to the flowobj subsystem |
| 467 | if (!portsToBeAdded.isEmpty()) { |
| 468 | flowObjService.next(deviceId, nextObjBuilder(newPortLoadBalancer.portLoadBalancerId(), |
| 469 | portsToBeAdded, nextid) |
| 470 | .addToExisting(context)); |
| 471 | } else { |
| 472 | log.debug("NextObj for {} nothing to add", newPortLoadBalancer.portLoadBalancerId()); |
| 473 | |
| 474 | } |
| 475 | if (!portsToBeRemoved.isEmpty()) { |
| 476 | flowObjService.next(deviceId, nextObjBuilder(newPortLoadBalancer.portLoadBalancerId(), |
| 477 | portsToBeRemoved, nextid) |
| 478 | .removeFromExisting(context)); |
| 479 | } else { |
| 480 | log.debug("NextObj for {} nothing to remove", newPortLoadBalancer.portLoadBalancerId()); |
| 481 | } |
| 482 | } else { |
| 483 | log.info("NextObj for {} does not exist. Skip updatePortLoadBalancer", |
| 484 | newPortLoadBalancer.portLoadBalancerId()); |
| 485 | } |
| 486 | }); |
| 487 | } |
| 488 | |
| 489 | private NextObjective.Builder nextObjBuilder(PortLoadBalancerId portLoadBalancerId, Set<PortNumber> ports, |
| 490 | Integer nextId) { |
| 491 | if (nextId == null) { |
| 492 | nextId = flowObjService.allocateNextId(); |
| 493 | } |
| 494 | // This metadata is used to pass the key to the driver. |
| 495 | // Some driver, e.g. OF-DPA, will use that information while creating load balancing group. |
| 496 | // TODO This is not an actual LAG port. In the future, we should extend metadata structure to carry |
| 497 | // generic information. We should avoid using in_port in the metadata once generic metadata is available. |
| 498 | TrafficSelector meta = DefaultTrafficSelector.builder() |
| 499 | .matchInPort(PortNumber.portNumber(portLoadBalancerId.key())).build(); |
| 500 | NextObjective.Builder nextObjBuilder = DefaultNextObjective.builder() |
| 501 | .withId(nextId) |
| 502 | .withMeta(meta) |
| 503 | .withType(NextObjective.Type.HASHED) |
| 504 | .fromApp(appId); |
| 505 | ports.forEach(port -> { |
| 506 | TrafficTreatment treatment = DefaultTrafficTreatment.builder().setOutput(port).build(); |
| 507 | nextObjBuilder.addTreatment(DefaultNextTreatment.of(treatment)); |
| 508 | }); |
| 509 | return nextObjBuilder; |
| 510 | } |
| 511 | |
| 512 | // Custom-built function, when the device is not available we need a fallback mechanism |
| 513 | private boolean isLocalLeader(DeviceId deviceId) { |
| 514 | if (!mastershipService.isLocalMaster(deviceId)) { |
| 515 | // When the device is available we just check the mastership |
| 516 | if (deviceService.isAvailable(deviceId)) { |
| 517 | return false; |
| 518 | } |
| 519 | // Fallback with Leadership service - device id is used as topic |
| 520 | NodeId leader = leadershipService.runForLeadership( |
| 521 | deviceId.toString()).leaderNodeId(); |
| 522 | // Verify if this node is the leader |
| 523 | return clusterService.getLocalNode().id().equals(leader); |
| 524 | } |
| 525 | return true; |
| 526 | } |
| 527 | |
| 528 | private final class PortLoadBalancerObjectiveContext implements ObjectiveContext { |
| 529 | private final PortLoadBalancerId portLoadBalancerId; |
| 530 | |
| 531 | private PortLoadBalancerObjectiveContext(PortLoadBalancerId portLoadBalancerId) { |
| 532 | this.portLoadBalancerId = portLoadBalancerId; |
| 533 | } |
| 534 | |
| 535 | @Override |
| 536 | public void onSuccess(Objective objective) { |
| 537 | NextObjective nextObj = (NextObjective) objective; |
| 538 | log.debug("Successfully {} nextobj {} for port load balancer {}. NextObj={}", |
| 539 | nextObj.op(), nextObj.id(), portLoadBalancerId, nextObj); |
| 540 | portLoadBalancerProvExecutor.execute(() -> onSuccessHandler(nextObj, portLoadBalancerId)); |
| 541 | } |
| 542 | |
| 543 | @Override |
| 544 | public void onError(Objective objective, ObjectiveError error) { |
| 545 | NextObjective nextObj = (NextObjective) objective; |
| 546 | log.warn("Failed to {} nextobj {} for port load balancer {} due to {}. NextObj={}", |
| 547 | nextObj.op(), nextObj.id(), portLoadBalancerId, error, nextObj); |
| 548 | portLoadBalancerProvExecutor.execute(() -> onErrorHandler(nextObj, portLoadBalancerId)); |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | private void onSuccessHandler(NextObjective nextObjective, PortLoadBalancerId portLoadBalancerId) { |
| 553 | // Operation done |
| 554 | PortLoadBalancerData oldPortLoadBalancerData = new PortLoadBalancerData(portLoadBalancerId); |
| 555 | PortLoadBalancerData newPortLoadBalancerData = new PortLoadBalancerData(portLoadBalancerId); |
| 556 | // Other operations will not lead to a generation of an event |
| 557 | switch (nextObjective.op()) { |
| 558 | case ADD: |
| 559 | newPortLoadBalancerData.setNextId(nextObjective.id()); |
| 560 | post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.INSTALLED, newPortLoadBalancerData, |
| 561 | oldPortLoadBalancerData)); |
| 562 | break; |
| 563 | case REMOVE: |
| 564 | oldPortLoadBalancerData.setNextId(nextObjective.id()); |
| 565 | post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.UNINSTALLED, newPortLoadBalancerData, |
| 566 | oldPortLoadBalancerData)); |
| 567 | break; |
| 568 | default: |
| 569 | break; |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | private void onErrorHandler(NextObjective nextObjective, PortLoadBalancerId portLoadBalancerId) { |
| 574 | // There was a failure |
| 575 | PortLoadBalancerData portLoadBalancerData = new PortLoadBalancerData(portLoadBalancerId); |
| 576 | // send FAILED event; |
| 577 | switch (nextObjective.op()) { |
| 578 | case ADD: |
| 579 | // If ADD is failing apps do not know the next id; let's update the store |
| 580 | portLoadBalancerNextStore.remove(portLoadBalancerId); |
| 581 | portLoadBalancerResStore.remove(portLoadBalancerId); |
| 582 | portLoadBalancerStore.remove(portLoadBalancerId); |
| 583 | post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.FAILED, portLoadBalancerData, |
| 584 | portLoadBalancerData)); |
| 585 | break; |
| 586 | case ADD_TO_EXISTING: |
| 587 | // If ADD_TO_EXISTING is failing let's remove the failed ports |
| 588 | Collection<PortNumber> addedPorts = nextObjective.next().stream() |
| 589 | .flatMap(t -> t.allInstructions().stream()) |
| 590 | .filter(i -> i.type() == Instruction.Type.OUTPUT) |
| 591 | .map(i -> ((Instructions.OutputInstruction) i).port()) |
| 592 | .collect(Collectors.toList()); |
| 593 | portLoadBalancerStore.compute(portLoadBalancerId, (key, value) -> { |
| 594 | if (value != null && value.ports() != null && !value.ports().isEmpty()) { |
| 595 | value.ports().removeAll(addedPorts); |
| 596 | } |
| 597 | return value; |
| 598 | }); |
| 599 | portLoadBalancerData.setNextId(nextObjective.id()); |
| 600 | post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.FAILED, portLoadBalancerData, |
| 601 | portLoadBalancerData)); |
| 602 | break; |
| 603 | case REMOVE_FROM_EXISTING: |
| 604 | // If REMOVE_TO_EXISTING is failing let's re-add the failed ports |
| 605 | Collection<PortNumber> removedPorts = nextObjective.next().stream() |
| 606 | .flatMap(t -> t.allInstructions().stream()) |
| 607 | .filter(i -> i.type() == Instruction.Type.OUTPUT) |
| 608 | .map(i -> ((Instructions.OutputInstruction) i).port()) |
| 609 | .collect(Collectors.toList()); |
| 610 | portLoadBalancerStore.compute(portLoadBalancerId, (key, value) -> { |
| 611 | if (value != null && value.ports() != null) { |
| 612 | value.ports().addAll(removedPorts); |
| 613 | } |
| 614 | return value; |
| 615 | }); |
| 616 | portLoadBalancerData.setNextId(nextObjective.id()); |
| 617 | post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.FAILED, portLoadBalancerData, |
| 618 | portLoadBalancerData)); |
| 619 | break; |
| 620 | case VERIFY: |
| 621 | case REMOVE: |
| 622 | // If ADD/REMOVE_TO_EXISTING, REMOVE and VERIFY are failing let's send |
| 623 | // also the info about the next id |
| 624 | portLoadBalancerData.setNextId(nextObjective.id()); |
| 625 | post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.FAILED, portLoadBalancerData, |
| 626 | portLoadBalancerData)); |
| 627 | break; |
| 628 | default: |
| 629 | break; |
| 630 | } |
| 631 | |
| 632 | } |
| 633 | } |