Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [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.incubator.store.virtual.impl; |
| 18 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 19 | import com.google.common.base.Objects; |
| 20 | import com.google.common.collect.ImmutableList; |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 21 | import com.google.common.collect.ImmutableMap; |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 22 | import org.onlab.util.KryoNamespace; |
| 23 | import org.onosproject.cluster.ClusterService; |
| 24 | import org.onosproject.cluster.Leadership; |
| 25 | import org.onosproject.cluster.LeadershipAdminService; |
| 26 | import org.onosproject.cluster.LeadershipEvent; |
| 27 | import org.onosproject.cluster.LeadershipEventListener; |
| 28 | import org.onosproject.cluster.LeadershipService; |
| 29 | import org.onosproject.cluster.NodeId; |
| 30 | import org.onosproject.cluster.RoleInfo; |
| 31 | import org.onosproject.incubator.net.virtual.NetworkId; |
| 32 | import org.onosproject.incubator.net.virtual.VirtualNetworkMastershipStore; |
| 33 | import org.onosproject.mastership.MastershipEvent; |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 34 | import org.onosproject.mastership.MastershipInfo; |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 35 | import org.onosproject.mastership.MastershipStoreDelegate; |
| 36 | import org.onosproject.mastership.MastershipTerm; |
| 37 | import org.onosproject.net.DeviceId; |
| 38 | import org.onosproject.net.MastershipRole; |
| 39 | import org.onosproject.store.cluster.messaging.ClusterCommunicationService; |
| 40 | import org.onosproject.store.cluster.messaging.MessageSubject; |
| 41 | import org.onosproject.store.serializers.KryoNamespaces; |
Jordan Halterman | 2c83a10 | 2017-08-20 17:11:41 -0700 | [diff] [blame] | 42 | import org.onosproject.store.service.Serializer; |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 43 | import org.osgi.service.component.annotations.Activate; |
| 44 | import org.osgi.service.component.annotations.Component; |
| 45 | import org.osgi.service.component.annotations.Deactivate; |
| 46 | import org.osgi.service.component.annotations.Reference; |
| 47 | import org.osgi.service.component.annotations.ReferenceCardinality; |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 48 | import org.slf4j.Logger; |
| 49 | |
| 50 | import java.util.List; |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 51 | import java.util.Optional; |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 52 | import java.util.Set; |
| 53 | import java.util.concurrent.CompletableFuture; |
| 54 | import java.util.concurrent.ExecutorService; |
| 55 | import java.util.concurrent.Executors; |
| 56 | import java.util.concurrent.ScheduledExecutorService; |
| 57 | import java.util.concurrent.TimeUnit; |
| 58 | import java.util.regex.Matcher; |
| 59 | import java.util.regex.Pattern; |
| 60 | import java.util.stream.Collectors; |
| 61 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 62 | import static com.google.common.base.Preconditions.checkArgument; |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 63 | import static org.onlab.util.Tools.groupedThreads; |
| 64 | import static org.onosproject.mastership.MastershipEvent.Type.BACKUPS_CHANGED; |
| 65 | import static org.onosproject.mastership.MastershipEvent.Type.MASTER_CHANGED; |
| 66 | import static org.onosproject.mastership.MastershipEvent.Type.SUSPENDED; |
| 67 | import static org.slf4j.LoggerFactory.getLogger; |
| 68 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 69 | @Component(immediate = true, enabled = false, service = VirtualNetworkMastershipStore.class) |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 70 | public class ConsistentVirtualDeviceMastershipStore |
| 71 | extends AbstractVirtualStore<MastershipEvent, MastershipStoreDelegate> |
| 72 | implements VirtualNetworkMastershipStore { |
| 73 | |
| 74 | private final Logger log = getLogger(getClass()); |
| 75 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 76 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 77 | protected LeadershipService leadershipService; |
| 78 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 79 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 80 | protected LeadershipAdminService leadershipAdminService; |
| 81 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 82 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 83 | protected ClusterService clusterService; |
| 84 | |
Ray Milkey | d84f89b | 2018-08-17 14:54:17 -0700 | [diff] [blame] | 85 | @Reference(cardinality = ReferenceCardinality.MANDATORY) |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 86 | protected ClusterCommunicationService clusterCommunicator; |
| 87 | |
| 88 | private NodeId localNodeId; |
| 89 | |
| 90 | private static final MessageSubject ROLE_RELINQUISH_SUBJECT = |
| 91 | new MessageSubject("virtual-mastership-store-device-role-relinquish"); |
| 92 | |
| 93 | private static final Pattern DEVICE_MASTERSHIP_TOPIC_PATTERN = |
| 94 | Pattern.compile("vnet:(.*),device:(.*)"); |
| 95 | |
| 96 | private ExecutorService eventHandler; |
| 97 | private ExecutorService messageHandlingExecutor; |
| 98 | private ScheduledExecutorService transferExecutor; |
| 99 | private final LeadershipEventListener leadershipEventListener = |
| 100 | new InternalDeviceMastershipEventListener(); |
| 101 | |
| 102 | private static final String NODE_ID_NULL = "Node ID cannot be null"; |
| 103 | private static final String NETWORK_ID_NULL = "Network ID cannot be null"; |
| 104 | private static final String DEVICE_ID_NULL = "Device ID cannot be null"; |
| 105 | private static final int WAIT_BEFORE_MASTERSHIP_HANDOFF_MILLIS = 3000; |
| 106 | |
Jordan Halterman | 2c83a10 | 2017-08-20 17:11:41 -0700 | [diff] [blame] | 107 | public static final Serializer SERIALIZER = Serializer.using( |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 108 | KryoNamespace.newBuilder() |
| 109 | .register(KryoNamespaces.API) |
| 110 | .register(MastershipRole.class) |
| 111 | .register(MastershipEvent.class) |
| 112 | .register(MastershipEvent.Type.class) |
| 113 | .register(VirtualDeviceId.class) |
| 114 | .build("VirtualMastershipStore")); |
| 115 | |
| 116 | @Activate |
| 117 | public void activate() { |
| 118 | eventHandler = Executors.newSingleThreadExecutor( |
| 119 | groupedThreads("onos/store/virtual/mastership", "event-handler", log)); |
| 120 | |
| 121 | messageHandlingExecutor = |
| 122 | Executors.newSingleThreadExecutor( |
| 123 | groupedThreads("onos/store/virtual/mastership", "message-handler", log)); |
| 124 | transferExecutor = |
| 125 | Executors.newSingleThreadScheduledExecutor( |
| 126 | groupedThreads("onos/store/virtual/mastership", "mastership-transfer-executor", log)); |
| 127 | clusterCommunicator.addSubscriber(ROLE_RELINQUISH_SUBJECT, |
| 128 | SERIALIZER::decode, |
| 129 | this::relinquishLocalRole, |
| 130 | SERIALIZER::encode, |
| 131 | messageHandlingExecutor); |
| 132 | localNodeId = clusterService.getLocalNode().id(); |
| 133 | leadershipService.addListener(leadershipEventListener); |
| 134 | |
| 135 | log.info("Started"); |
| 136 | } |
| 137 | |
| 138 | @Deactivate |
| 139 | public void deactivate() { |
| 140 | clusterCommunicator.removeSubscriber(ROLE_RELINQUISH_SUBJECT); |
| 141 | leadershipService.removeListener(leadershipEventListener); |
| 142 | messageHandlingExecutor.shutdown(); |
| 143 | transferExecutor.shutdown(); |
| 144 | eventHandler.shutdown(); |
| 145 | log.info("Stopped"); |
| 146 | } |
| 147 | |
| 148 | @Override |
| 149 | public CompletableFuture<MastershipRole> requestRole(NetworkId networkId, |
| 150 | DeviceId deviceId) { |
| 151 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 152 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
| 153 | |
| 154 | String leadershipTopic = createDeviceMastershipTopic(networkId, deviceId); |
| 155 | Leadership leadership = leadershipService.runForLeadership(leadershipTopic); |
| 156 | return CompletableFuture |
| 157 | .completedFuture(localNodeId.equals(leadership.leaderNodeId()) ? |
| 158 | MastershipRole.MASTER : MastershipRole.STANDBY); |
| 159 | } |
| 160 | |
| 161 | @Override |
| 162 | public MastershipRole getRole(NetworkId networkId, NodeId nodeId, DeviceId deviceId) { |
| 163 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 164 | checkArgument(nodeId != null, NODE_ID_NULL); |
| 165 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
| 166 | |
| 167 | String leadershipTopic = createDeviceMastershipTopic(networkId, deviceId); |
| 168 | Leadership leadership = leadershipService.getLeadership(leadershipTopic); |
| 169 | NodeId leader = leadership == null ? null : leadership.leaderNodeId(); |
| 170 | List<NodeId> candidates = leadership == null ? |
| 171 | ImmutableList.of() : ImmutableList.copyOf(leadership.candidates()); |
| 172 | return Objects.equal(nodeId, leader) ? |
| 173 | MastershipRole.MASTER : candidates.contains(nodeId) ? |
| 174 | MastershipRole.STANDBY : MastershipRole.NONE; |
| 175 | } |
| 176 | |
| 177 | @Override |
| 178 | public NodeId getMaster(NetworkId networkId, DeviceId deviceId) { |
| 179 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
| 180 | |
| 181 | return leadershipService.getLeader(createDeviceMastershipTopic(networkId, deviceId)); |
| 182 | } |
| 183 | |
| 184 | @Override |
| 185 | public RoleInfo getNodes(NetworkId networkId, DeviceId deviceId) { |
| 186 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 187 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 188 | Leadership leadership = leadershipService.getLeadership(createDeviceMastershipTopic(networkId, deviceId)); |
| 189 | return new RoleInfo(leadership.leaderNodeId(), leadership.candidates()); |
| 190 | } |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 191 | |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 192 | @Override |
| 193 | public MastershipInfo getMastership(NetworkId networkId, DeviceId deviceId) { |
| 194 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 195 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
| 196 | Leadership leadership = leadershipService.getLeadership(createDeviceMastershipTopic(networkId, deviceId)); |
| 197 | return buildMastershipFromLeadership(leadership); |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | @Override |
| 201 | public Set<DeviceId> getDevices(NetworkId networkId, NodeId nodeId) { |
| 202 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 203 | checkArgument(nodeId != null, NODE_ID_NULL); |
| 204 | |
| 205 | // FIXME This result contains REMOVED device. |
| 206 | // MastershipService cannot listen to DeviceEvent to GC removed topic, |
| 207 | // since DeviceManager depend on it. |
| 208 | // Reference count, etc. at LeadershipService layer? |
| 209 | return leadershipService |
| 210 | .ownedTopics(nodeId) |
| 211 | .stream() |
| 212 | .filter(this::isVirtualMastershipTopic) |
| 213 | .map(this::extractDeviceIdFromTopic) |
| 214 | .collect(Collectors.toSet()); |
| 215 | } |
| 216 | |
| 217 | @Override |
| 218 | public CompletableFuture<MastershipEvent> setMaster(NetworkId networkId, |
| 219 | NodeId nodeId, DeviceId deviceId) { |
| 220 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 221 | checkArgument(nodeId != null, NODE_ID_NULL); |
| 222 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
| 223 | |
| 224 | String leadershipTopic = createDeviceMastershipTopic(networkId, deviceId); |
| 225 | if (leadershipAdminService.promoteToTopOfCandidateList(leadershipTopic, nodeId)) { |
| 226 | transferExecutor.schedule(() -> leadershipAdminService.transferLeadership(leadershipTopic, nodeId), |
| 227 | WAIT_BEFORE_MASTERSHIP_HANDOFF_MILLIS, TimeUnit.MILLISECONDS); |
| 228 | } |
| 229 | return CompletableFuture.completedFuture(null); |
| 230 | } |
| 231 | |
| 232 | @Override |
| 233 | public MastershipTerm getTermFor(NetworkId networkId, DeviceId deviceId) { |
| 234 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 235 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
| 236 | |
| 237 | String leadershipTopic = createDeviceMastershipTopic(networkId, deviceId); |
| 238 | Leadership leadership = leadershipService.getLeadership(leadershipTopic); |
| 239 | return leadership != null && leadership.leaderNodeId() != null ? |
| 240 | MastershipTerm.of(leadership.leaderNodeId(), |
| 241 | leadership.leader().term()) : null; |
| 242 | } |
| 243 | |
| 244 | @Override |
| 245 | public CompletableFuture<MastershipEvent> setStandby(NetworkId networkId, |
| 246 | NodeId nodeId, |
| 247 | DeviceId deviceId) { |
| 248 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 249 | checkArgument(nodeId != null, NODE_ID_NULL); |
| 250 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
| 251 | |
| 252 | NodeId currentMaster = getMaster(networkId, deviceId); |
| 253 | if (!nodeId.equals(currentMaster)) { |
| 254 | return CompletableFuture.completedFuture(null); |
| 255 | } |
| 256 | |
| 257 | String leadershipTopic = createDeviceMastershipTopic(networkId, deviceId); |
| 258 | List<NodeId> candidates = leadershipService.getCandidates(leadershipTopic); |
| 259 | |
| 260 | NodeId newMaster = candidates.stream() |
| 261 | .filter(candidate -> !Objects.equal(nodeId, candidate)) |
| 262 | .findFirst() |
| 263 | .orElse(null); |
| 264 | log.info("Transitioning to role {} for {}. Next master: {}", |
| 265 | newMaster != null ? MastershipRole.STANDBY : MastershipRole.NONE, |
| 266 | deviceId, newMaster); |
| 267 | |
| 268 | if (newMaster != null) { |
| 269 | return setMaster(networkId, newMaster, deviceId); |
| 270 | } |
| 271 | return relinquishRole(networkId, nodeId, deviceId); |
| 272 | } |
| 273 | |
| 274 | @Override |
| 275 | public CompletableFuture<MastershipEvent> relinquishRole(NetworkId networkId, |
| 276 | NodeId nodeId, |
| 277 | DeviceId deviceId) { |
| 278 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 279 | checkArgument(nodeId != null, NODE_ID_NULL); |
| 280 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
| 281 | |
| 282 | if (nodeId.equals(localNodeId)) { |
| 283 | return relinquishLocalRoleByNetwork(networkId, deviceId); |
| 284 | } |
| 285 | |
| 286 | log.debug("Forwarding request to relinquish " |
| 287 | + "role for vnet {} device {} to {}", deviceId, nodeId); |
| 288 | return clusterCommunicator.sendAndReceive( |
| 289 | new VirtualDeviceId(networkId, deviceId), |
| 290 | ROLE_RELINQUISH_SUBJECT, |
| 291 | SERIALIZER::encode, |
| 292 | SERIALIZER::decode, |
| 293 | nodeId); |
| 294 | } |
| 295 | |
| 296 | private CompletableFuture<MastershipEvent> relinquishLocalRoleByNetwork(NetworkId networkId, |
| 297 | DeviceId deviceId) { |
| 298 | checkArgument(networkId != null, NETWORK_ID_NULL); |
| 299 | checkArgument(deviceId != null, DEVICE_ID_NULL); |
| 300 | |
| 301 | String leadershipTopic = createDeviceMastershipTopic(networkId, deviceId); |
| 302 | if (!leadershipService.getCandidates(leadershipTopic).contains(localNodeId)) { |
| 303 | return CompletableFuture.completedFuture(null); |
| 304 | } |
| 305 | MastershipEvent.Type eventType = localNodeId.equals(leadershipService.getLeader(leadershipTopic)) ? |
| 306 | MastershipEvent.Type.MASTER_CHANGED : MastershipEvent.Type.BACKUPS_CHANGED; |
| 307 | leadershipService.withdraw(leadershipTopic); |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 308 | return CompletableFuture.completedFuture( |
| 309 | new MastershipEvent(eventType, deviceId, getMastership(networkId, deviceId))); |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 310 | } |
| 311 | |
| 312 | private CompletableFuture<MastershipEvent> |
| 313 | relinquishLocalRole(VirtualDeviceId virtualDeviceId) { |
| 314 | return relinquishLocalRoleByNetwork(virtualDeviceId.networkId, |
| 315 | virtualDeviceId.deviceId); |
| 316 | } |
| 317 | |
| 318 | @Override |
| 319 | public void relinquishAllRole(NetworkId networkId, NodeId nodeId) { |
| 320 | // Noop. LeadershipService already takes care of detecting and purging stale locks. |
| 321 | } |
| 322 | |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 323 | private MastershipInfo buildMastershipFromLeadership(Leadership leadership) { |
| 324 | ImmutableMap.Builder<NodeId, MastershipRole> builder = ImmutableMap.builder(); |
| 325 | if (leadership.leaderNodeId() != null) { |
| 326 | builder.put(leadership.leaderNodeId(), MastershipRole.MASTER); |
| 327 | } |
| 328 | leadership.candidates().forEach(nodeId -> builder.put(nodeId, MastershipRole.STANDBY)); |
| 329 | clusterService.getNodes().stream() |
| 330 | .filter(node -> !leadership.candidates().contains(node.id())) |
| 331 | .forEach(node -> builder.put(node.id(), MastershipRole.NONE)); |
| 332 | |
| 333 | return new MastershipInfo( |
| 334 | leadership.leader() != null ? leadership.leader().term() : 0, |
| 335 | leadership.leader() != null |
| 336 | ? Optional.of(leadership.leader().nodeId()) |
| 337 | : Optional.empty(), |
| 338 | builder.build()); |
| 339 | } |
| 340 | |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 341 | private class InternalDeviceMastershipEventListener |
| 342 | implements LeadershipEventListener { |
| 343 | |
| 344 | @Override |
| 345 | public boolean isRelevant(LeadershipEvent event) { |
| 346 | Leadership leadership = event.subject(); |
| 347 | return isVirtualMastershipTopic(leadership.topic()); |
| 348 | } |
| 349 | |
| 350 | @Override |
| 351 | public void event(LeadershipEvent event) { |
| 352 | eventHandler.execute(() -> handleEvent(event)); |
| 353 | } |
| 354 | |
| 355 | private void handleEvent(LeadershipEvent event) { |
| 356 | Leadership leadership = event.subject(); |
| 357 | |
| 358 | NetworkId networkId = extractNetworkIdFromTopic(leadership.topic()); |
| 359 | DeviceId deviceId = extractDeviceIdFromTopic(leadership.topic()); |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 360 | MastershipInfo mastershipInfo = event.type() != LeadershipEvent.Type.SERVICE_DISRUPTED |
| 361 | ? buildMastershipFromLeadership(event.subject()) |
| 362 | : new MastershipInfo(); |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 363 | |
| 364 | switch (event.type()) { |
| 365 | case LEADER_AND_CANDIDATES_CHANGED: |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 366 | notifyDelegate(networkId, new MastershipEvent(BACKUPS_CHANGED, deviceId, mastershipInfo)); |
| 367 | notifyDelegate(networkId, new MastershipEvent(MASTER_CHANGED, deviceId, mastershipInfo)); |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 368 | break; |
| 369 | case LEADER_CHANGED: |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 370 | notifyDelegate(networkId, new MastershipEvent(MASTER_CHANGED, deviceId, mastershipInfo)); |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 371 | break; |
| 372 | case CANDIDATES_CHANGED: |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 373 | notifyDelegate(networkId, new MastershipEvent(BACKUPS_CHANGED, deviceId, mastershipInfo)); |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 374 | break; |
| 375 | case SERVICE_DISRUPTED: |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 376 | notifyDelegate(networkId, new MastershipEvent(SUSPENDED, deviceId, mastershipInfo)); |
Yoonseon Han | 9b71b2c | 2017-05-26 15:17:29 -0700 | [diff] [blame] | 377 | break; |
| 378 | case SERVICE_RESTORED: |
| 379 | // Do nothing, wait for updates from peers |
| 380 | break; |
| 381 | default: |
| 382 | } |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | private String createDeviceMastershipTopic(NetworkId networkId, DeviceId deviceId) { |
| 387 | return String.format("vnet:%s,device:%s", networkId.toString(), deviceId.toString()); |
| 388 | } |
| 389 | |
| 390 | /** |
| 391 | * Returns the virtual network identifier extracted from the topic. |
| 392 | * |
| 393 | * @param topic topic to extract virtual network identifier |
| 394 | * @return an extracted virtual network identifier |
| 395 | * @throws IllegalArgumentException the topic not match with the pattern |
| 396 | * used for virtual network mastership store |
| 397 | */ |
| 398 | private NetworkId extractNetworkIdFromTopic(String topic) { |
| 399 | Matcher m = DEVICE_MASTERSHIP_TOPIC_PATTERN.matcher(topic); |
| 400 | if (m.matches()) { |
| 401 | return NetworkId.networkId(Long.getLong(m.group(1))); |
| 402 | } else { |
| 403 | throw new IllegalArgumentException("Invalid virtual mastership topic: " |
| 404 | + topic); |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | /** |
| 409 | * Returns the device identifier extracted from the topic. |
| 410 | * |
| 411 | * @param topic topic to extract device identifier |
| 412 | * @return an extracted virtual device identifier |
| 413 | * @throws IllegalArgumentException the topic not match with the pattern |
| 414 | * used for virtual network mastership store |
| 415 | */ |
| 416 | private DeviceId extractDeviceIdFromTopic(String topic) { |
| 417 | Matcher m = DEVICE_MASTERSHIP_TOPIC_PATTERN.matcher(topic); |
| 418 | if (m.matches()) { |
| 419 | return DeviceId.deviceId(m.group(2)); |
| 420 | } else { |
| 421 | throw new IllegalArgumentException("Invalid virtual mastership topic: " |
| 422 | + topic); |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * Returns whether the topic is matched with virtual mastership store topic. |
| 428 | * |
| 429 | * @param topic topic to match |
| 430 | * @return True when the topic matched with virtual network mastership store |
| 431 | */ |
| 432 | private boolean isVirtualMastershipTopic(String topic) { |
| 433 | Matcher m = DEVICE_MASTERSHIP_TOPIC_PATTERN.matcher(topic); |
| 434 | return m.matches(); |
| 435 | } |
| 436 | |
| 437 | /** |
| 438 | * A wrapper class used for the communication service. |
| 439 | */ |
| 440 | private class VirtualDeviceId { |
| 441 | NetworkId networkId; |
| 442 | DeviceId deviceId; |
| 443 | |
| 444 | public VirtualDeviceId(NetworkId networkId, DeviceId deviceId) { |
| 445 | this.networkId = networkId; |
| 446 | this.deviceId = deviceId; |
| 447 | } |
| 448 | |
| 449 | public int hashCode() { |
| 450 | return Objects.hashCode(networkId, deviceId); |
| 451 | } |
| 452 | |
| 453 | @Override |
| 454 | public boolean equals(Object obj) { |
| 455 | if (this == obj) { |
| 456 | return true; |
| 457 | } |
| 458 | if (obj instanceof VirtualDeviceId) { |
| 459 | final VirtualDeviceId that = (VirtualDeviceId) obj; |
| 460 | return this.getClass() == that.getClass() && |
| 461 | Objects.equal(this.networkId, that.networkId) && |
| 462 | Objects.equal(this.deviceId, that.deviceId); |
| 463 | } |
| 464 | return false; |
| 465 | } |
| 466 | } |
| 467 | } |