Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2017-present Open Networking Foundation |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 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 | |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 19 | import com.google.common.collect.ImmutableList; |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 20 | import com.google.common.collect.ImmutableMap; |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 21 | import com.google.common.collect.ImmutableSet; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 22 | import org.apache.felix.scr.annotations.Activate; |
| 23 | import org.apache.felix.scr.annotations.Component; |
| 24 | import org.apache.felix.scr.annotations.Deactivate; |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 25 | import org.apache.felix.scr.annotations.Reference; |
| 26 | import org.apache.felix.scr.annotations.ReferenceCardinality; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 27 | import org.apache.felix.scr.annotations.Service; |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 28 | import org.onlab.packet.IpAddress; |
| 29 | import org.onosproject.cluster.ClusterEventListener; |
| 30 | import org.onosproject.cluster.ClusterService; |
| 31 | import org.onosproject.cluster.ControllerNode; |
| 32 | import org.onosproject.cluster.DefaultControllerNode; |
Jordan Halterman | 00e92da | 2018-05-22 23:05:52 -0700 | [diff] [blame] | 33 | import org.onosproject.cluster.Node; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 34 | import org.onosproject.cluster.NodeId; |
| 35 | import org.onosproject.cluster.RoleInfo; |
Jordan Halterman | f70bf46 | 2017-07-29 13:12:00 -0700 | [diff] [blame] | 36 | import org.onosproject.core.Version; |
| 37 | import org.onosproject.core.VersionService; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 38 | import org.onosproject.incubator.net.virtual.NetworkId; |
| 39 | import org.onosproject.incubator.net.virtual.VirtualNetworkMastershipStore; |
| 40 | import org.onosproject.mastership.MastershipEvent; |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 41 | import org.onosproject.mastership.MastershipInfo; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 42 | import org.onosproject.mastership.MastershipStoreDelegate; |
| 43 | import org.onosproject.mastership.MastershipTerm; |
| 44 | import org.onosproject.net.DeviceId; |
| 45 | import org.onosproject.net.MastershipRole; |
| 46 | import org.slf4j.Logger; |
| 47 | |
Yuta HIGUCHI | 0c47d53 | 2017-08-18 23:16:35 -0700 | [diff] [blame] | 48 | import java.time.Instant; |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 49 | import java.util.ArrayList; |
| 50 | import java.util.Collections; |
| 51 | import java.util.HashMap; |
| 52 | import java.util.HashSet; |
| 53 | import java.util.List; |
| 54 | import java.util.Map; |
| 55 | import java.util.Objects; |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 56 | import java.util.Optional; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 57 | import java.util.Set; |
| 58 | import java.util.concurrent.CompletableFuture; |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 59 | import java.util.concurrent.atomic.AtomicInteger; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 60 | |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 61 | import static org.onosproject.mastership.MastershipEvent.Type.BACKUPS_CHANGED; |
| 62 | import static org.onosproject.mastership.MastershipEvent.Type.MASTER_CHANGED; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 63 | import static org.slf4j.LoggerFactory.getLogger; |
| 64 | |
| 65 | /** |
| 66 | * Implementation of the virtual network mastership store to manage inventory of |
| 67 | * mastership using trivial in-memory implementation. |
| 68 | */ |
| 69 | @Component(immediate = true) |
| 70 | @Service |
| 71 | public class SimpleVirtualMastershipStore |
| 72 | extends AbstractVirtualStore<MastershipEvent, MastershipStoreDelegate> |
| 73 | implements VirtualNetworkMastershipStore { |
| 74 | |
| 75 | private final Logger log = getLogger(getClass()); |
| 76 | |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 77 | private static final int NOTHING = 0; |
| 78 | private static final int INIT = 1; |
| 79 | |
| 80 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 81 | protected ClusterService clusterService; |
| 82 | |
Jordan Halterman | f70bf46 | 2017-07-29 13:12:00 -0700 | [diff] [blame] | 83 | @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| 84 | protected VersionService versionService; |
| 85 | |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 86 | //devices mapped to their masters, to emulate multiple nodes |
| 87 | protected final Map<NetworkId, Map<DeviceId, NodeId>> masterMapByNetwork = |
| 88 | new HashMap<>(); |
| 89 | //emulate backups with pile of nodes |
| 90 | protected final Map<NetworkId, Map<DeviceId, List<NodeId>>> backupsByNetwork = |
| 91 | new HashMap<>(); |
| 92 | //terms |
| 93 | protected final Map<NetworkId, Map<DeviceId, AtomicInteger>> termMapByNetwork = |
| 94 | new HashMap<>(); |
| 95 | |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 96 | @Activate |
| 97 | public void activate() { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 98 | if (clusterService == null) { |
| 99 | clusterService = createFakeClusterService(); |
| 100 | } |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 101 | log.info("Started"); |
| 102 | } |
| 103 | |
| 104 | @Deactivate |
| 105 | public void deactivate() { |
| 106 | log.info("Stopped"); |
| 107 | } |
| 108 | |
| 109 | @Override |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 110 | public CompletableFuture<MastershipRole> requestRole(NetworkId networkId, |
| 111 | DeviceId deviceId) { |
| 112 | //query+possible reelection |
| 113 | NodeId node = clusterService.getLocalNode().id(); |
| 114 | MastershipRole role = getRole(networkId, node, deviceId); |
| 115 | |
| 116 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 117 | |
| 118 | switch (role) { |
| 119 | case MASTER: |
| 120 | return CompletableFuture.completedFuture(MastershipRole.MASTER); |
| 121 | case STANDBY: |
| 122 | if (getMaster(networkId, deviceId) == null) { |
| 123 | // no master => become master |
| 124 | masterMap.put(deviceId, node); |
| 125 | incrementTerm(networkId, deviceId); |
| 126 | // remove from backup list |
| 127 | removeFromBackups(networkId, deviceId, node); |
| 128 | notifyDelegate(networkId, new MastershipEvent(MASTER_CHANGED, deviceId, |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 129 | getMastership(networkId, deviceId))); |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 130 | return CompletableFuture.completedFuture(MastershipRole.MASTER); |
| 131 | } |
| 132 | return CompletableFuture.completedFuture(MastershipRole.STANDBY); |
| 133 | case NONE: |
| 134 | if (getMaster(networkId, deviceId) == null) { |
| 135 | // no master => become master |
| 136 | masterMap.put(deviceId, node); |
| 137 | incrementTerm(networkId, deviceId); |
| 138 | notifyDelegate(networkId, new MastershipEvent(MASTER_CHANGED, deviceId, |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 139 | getMastership(networkId, deviceId))); |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 140 | return CompletableFuture.completedFuture(MastershipRole.MASTER); |
| 141 | } |
| 142 | // add to backup list |
| 143 | if (addToBackup(networkId, deviceId, node)) { |
| 144 | notifyDelegate(networkId, new MastershipEvent(BACKUPS_CHANGED, deviceId, |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 145 | getMastership(networkId, deviceId))); |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 146 | } |
| 147 | return CompletableFuture.completedFuture(MastershipRole.STANDBY); |
| 148 | default: |
| 149 | log.warn("unknown Mastership Role {}", role); |
| 150 | } |
| 151 | return CompletableFuture.completedFuture(role); |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | @Override |
| 155 | public MastershipRole getRole(NetworkId networkId, NodeId nodeId, DeviceId deviceId) { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 156 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 157 | Map<DeviceId, List<NodeId>> backups = getBackups(networkId); |
| 158 | |
| 159 | //just query |
| 160 | NodeId current = masterMap.get(deviceId); |
| 161 | MastershipRole role; |
| 162 | |
| 163 | if (current != null && current.equals(nodeId)) { |
| 164 | return MastershipRole.MASTER; |
| 165 | } |
| 166 | |
| 167 | if (backups.getOrDefault(deviceId, Collections.emptyList()).contains(nodeId)) { |
| 168 | role = MastershipRole.STANDBY; |
| 169 | } else { |
| 170 | role = MastershipRole.NONE; |
| 171 | } |
| 172 | return role; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | @Override |
| 176 | public NodeId getMaster(NetworkId networkId, DeviceId deviceId) { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 177 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 178 | return masterMap.get(deviceId); |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | @Override |
| 182 | public RoleInfo getNodes(NetworkId networkId, DeviceId deviceId) { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 183 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 184 | Map<DeviceId, List<NodeId>> backups = getBackups(networkId); |
| 185 | |
| 186 | return new RoleInfo(masterMap.get(deviceId), |
| 187 | backups.getOrDefault(deviceId, ImmutableList.of())); |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | @Override |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 191 | public MastershipInfo getMastership(NetworkId networkId, DeviceId deviceId) { |
| 192 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 193 | Map<DeviceId, AtomicInteger> termMap = getTermMap(networkId); |
| 194 | Map<DeviceId, List<NodeId>> backups = getBackups(networkId); |
| 195 | ImmutableMap.Builder<NodeId, MastershipRole> roleBuilder = ImmutableMap.builder(); |
| 196 | NodeId master = masterMap.get(deviceId); |
| 197 | if (master != null) { |
| 198 | roleBuilder.put(master, MastershipRole.MASTER); |
| 199 | } |
Ray Milkey | 30f35b2 | 2018-06-21 14:56:47 -0700 | [diff] [blame] | 200 | backups.getOrDefault(deviceId, Collections.emptyList()) |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 201 | .forEach(nodeId -> roleBuilder.put(nodeId, MastershipRole.STANDBY)); |
| 202 | clusterService.getNodes().stream() |
| 203 | .filter(node -> !masterMap.containsValue(node.id())) |
Ray Milkey | 30f35b2 | 2018-06-21 14:56:47 -0700 | [diff] [blame] | 204 | .filter(node -> !backups.get(deviceId).contains(node.id())) |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 205 | .forEach(node -> roleBuilder.put(node.id(), MastershipRole.NONE)); |
| 206 | return new MastershipInfo( |
| 207 | termMap.getOrDefault(deviceId, new AtomicInteger(NOTHING)).get(), |
| 208 | Optional.ofNullable(master), |
| 209 | roleBuilder.build()); |
| 210 | } |
| 211 | |
| 212 | @Override |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 213 | public Set<DeviceId> getDevices(NetworkId networkId, NodeId nodeId) { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 214 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 215 | |
| 216 | Set<DeviceId> ids = new HashSet<>(); |
| 217 | for (Map.Entry<DeviceId, NodeId> d : masterMap.entrySet()) { |
| 218 | if (Objects.equals(d.getValue(), nodeId)) { |
| 219 | ids.add(d.getKey()); |
| 220 | } |
| 221 | } |
| 222 | return ids; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 223 | } |
| 224 | |
| 225 | @Override |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 226 | public synchronized CompletableFuture<MastershipEvent> setMaster(NetworkId networkId, |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 227 | NodeId nodeId, DeviceId deviceId) { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 228 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 229 | |
| 230 | MastershipRole role = getRole(networkId, nodeId, deviceId); |
| 231 | switch (role) { |
| 232 | case MASTER: |
| 233 | // no-op |
| 234 | return CompletableFuture.completedFuture(null); |
| 235 | case STANDBY: |
| 236 | case NONE: |
| 237 | NodeId prevMaster = masterMap.put(deviceId, nodeId); |
| 238 | incrementTerm(networkId, deviceId); |
| 239 | removeFromBackups(networkId, deviceId, nodeId); |
| 240 | addToBackup(networkId, deviceId, prevMaster); |
| 241 | break; |
| 242 | default: |
| 243 | log.warn("unknown Mastership Role {}", role); |
| 244 | return null; |
| 245 | } |
| 246 | |
| 247 | return CompletableFuture.completedFuture( |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 248 | new MastershipEvent(MASTER_CHANGED, deviceId, getMastership(networkId, deviceId))); |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 249 | } |
| 250 | |
| 251 | @Override |
| 252 | public MastershipTerm getTermFor(NetworkId networkId, DeviceId deviceId) { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 253 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 254 | Map<DeviceId, AtomicInteger> termMap = getTermMap(networkId); |
| 255 | |
| 256 | if ((termMap.get(deviceId) == null)) { |
| 257 | return MastershipTerm.of(masterMap.get(deviceId), NOTHING); |
| 258 | } |
| 259 | return MastershipTerm.of( |
| 260 | masterMap.get(deviceId), termMap.get(deviceId).get()); |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | @Override |
| 264 | public CompletableFuture<MastershipEvent> setStandby(NetworkId networkId, |
| 265 | NodeId nodeId, DeviceId deviceId) { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 266 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 267 | |
| 268 | MastershipRole role = getRole(networkId, nodeId, deviceId); |
| 269 | switch (role) { |
| 270 | case MASTER: |
| 271 | NodeId backup = reelect(networkId, deviceId, nodeId); |
| 272 | if (backup == null) { |
| 273 | // no master alternative |
| 274 | masterMap.remove(deviceId); |
| 275 | // TODO: Should there be new event type for no MASTER? |
| 276 | return CompletableFuture.completedFuture( |
| 277 | new MastershipEvent(MASTER_CHANGED, deviceId, |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 278 | getMastership(networkId, deviceId))); |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 279 | } else { |
| 280 | NodeId prevMaster = masterMap.put(deviceId, backup); |
| 281 | incrementTerm(networkId, deviceId); |
| 282 | addToBackup(networkId, deviceId, prevMaster); |
| 283 | return CompletableFuture.completedFuture( |
| 284 | new MastershipEvent(MASTER_CHANGED, deviceId, |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 285 | getMastership(networkId, deviceId))); |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | case STANDBY: |
| 289 | case NONE: |
| 290 | boolean modified = addToBackup(networkId, deviceId, nodeId); |
| 291 | if (modified) { |
| 292 | return CompletableFuture.completedFuture( |
| 293 | new MastershipEvent(BACKUPS_CHANGED, deviceId, |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 294 | getMastership(networkId, deviceId))); |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 295 | } |
| 296 | break; |
| 297 | |
| 298 | default: |
| 299 | log.warn("unknown Mastership Role {}", role); |
| 300 | } |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 301 | return null; |
| 302 | } |
| 303 | |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 304 | |
| 305 | /** |
| 306 | * Dumbly selects next-available node that's not the current one. |
| 307 | * emulate leader election. |
| 308 | * |
| 309 | * @param networkId a virtual network identifier |
| 310 | * @param deviceId a virtual device identifier |
| 311 | * @param nodeId a nod identifier |
| 312 | * @return Next available node as a leader |
| 313 | */ |
| 314 | private synchronized NodeId reelect(NetworkId networkId, DeviceId deviceId, |
| 315 | NodeId nodeId) { |
| 316 | Map<DeviceId, List<NodeId>> backups = getBackups(networkId); |
| 317 | |
| 318 | List<NodeId> stbys = backups.getOrDefault(deviceId, Collections.emptyList()); |
| 319 | NodeId backup = null; |
| 320 | for (NodeId n : stbys) { |
| 321 | if (!n.equals(nodeId)) { |
| 322 | backup = n; |
| 323 | break; |
| 324 | } |
| 325 | } |
| 326 | stbys.remove(backup); |
| 327 | return backup; |
| 328 | } |
| 329 | |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 330 | @Override |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 331 | public synchronized CompletableFuture<MastershipEvent> |
| 332 | relinquishRole(NetworkId networkId, NodeId nodeId, DeviceId deviceId) { |
| 333 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 334 | |
| 335 | MastershipRole role = getRole(networkId, nodeId, deviceId); |
| 336 | switch (role) { |
| 337 | case MASTER: |
| 338 | NodeId backup = reelect(networkId, deviceId, nodeId); |
| 339 | masterMap.put(deviceId, backup); |
| 340 | incrementTerm(networkId, deviceId); |
| 341 | return CompletableFuture.completedFuture( |
| 342 | new MastershipEvent(MASTER_CHANGED, deviceId, |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 343 | getMastership(networkId, deviceId))); |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 344 | |
| 345 | case STANDBY: |
| 346 | if (removeFromBackups(networkId, deviceId, nodeId)) { |
| 347 | return CompletableFuture.completedFuture( |
| 348 | new MastershipEvent(BACKUPS_CHANGED, deviceId, |
Jordan Halterman | 0a2bd45 | 2018-06-13 17:24:58 -0700 | [diff] [blame] | 349 | getMastership(networkId, deviceId))); |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 350 | } |
| 351 | break; |
| 352 | |
| 353 | case NONE: |
| 354 | break; |
| 355 | |
| 356 | default: |
| 357 | log.warn("unknown Mastership Role {}", role); |
| 358 | } |
| 359 | return CompletableFuture.completedFuture(null); |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | @Override |
| 363 | public void relinquishAllRole(NetworkId networkId, NodeId nodeId) { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 364 | Map<DeviceId, NodeId> masterMap = getMasterMap(networkId); |
| 365 | Map<DeviceId, List<NodeId>> backups = getBackups(networkId); |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 366 | |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 367 | List<CompletableFuture<MastershipEvent>> eventFutures = new ArrayList<>(); |
| 368 | Set<DeviceId> toRelinquish = new HashSet<>(); |
| 369 | |
| 370 | masterMap.entrySet().stream() |
| 371 | .filter(entry -> nodeId.equals(entry.getValue())) |
| 372 | .forEach(entry -> toRelinquish.add(entry.getKey())); |
| 373 | |
| 374 | backups.entrySet().stream() |
| 375 | .filter(entry -> entry.getValue().contains(nodeId)) |
| 376 | .forEach(entry -> toRelinquish.add(entry.getKey())); |
| 377 | |
| 378 | toRelinquish.forEach(deviceId -> eventFutures.add( |
| 379 | relinquishRole(networkId, nodeId, deviceId))); |
| 380 | |
| 381 | eventFutures.forEach(future -> { |
| 382 | future.whenComplete((event, error) -> notifyDelegate(networkId, event)); |
| 383 | }); |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * Increase the term for a device, and store it. |
| 388 | * |
| 389 | * @param networkId a virtual network identifier |
| 390 | * @param deviceId a virtual device identifier |
| 391 | */ |
| 392 | private synchronized void incrementTerm(NetworkId networkId, DeviceId deviceId) { |
| 393 | Map<DeviceId, AtomicInteger> termMap = getTermMap(networkId); |
| 394 | |
| 395 | AtomicInteger term = termMap.getOrDefault(deviceId, new AtomicInteger(NOTHING)); |
| 396 | term.incrementAndGet(); |
| 397 | termMap.put(deviceId, term); |
| 398 | } |
| 399 | |
| 400 | /** |
| 401 | * Remove backup node for a device. |
| 402 | * |
| 403 | * @param networkId a virtual network identifier |
| 404 | * @param deviceId a virtual device identifier |
| 405 | * @param nodeId a node identifier |
| 406 | * @return True if success |
| 407 | */ |
| 408 | private synchronized boolean removeFromBackups(NetworkId networkId, |
| 409 | DeviceId deviceId, NodeId nodeId) { |
| 410 | Map<DeviceId, List<NodeId>> backups = getBackups(networkId); |
| 411 | |
| 412 | List<NodeId> stbys = backups.getOrDefault(deviceId, new ArrayList<>()); |
| 413 | boolean modified = stbys.remove(nodeId); |
| 414 | backups.put(deviceId, stbys); |
| 415 | return modified; |
| 416 | } |
| 417 | |
| 418 | /** |
| 419 | * add to backup if not there already, silently ignores null node. |
| 420 | * |
| 421 | * @param networkId a virtual network identifier |
| 422 | * @param deviceId a virtual device identifier |
| 423 | * @param nodeId a node identifier |
| 424 | * @return True if success |
| 425 | */ |
| 426 | private synchronized boolean addToBackup(NetworkId networkId, |
| 427 | DeviceId deviceId, NodeId nodeId) { |
| 428 | Map<DeviceId, List<NodeId>> backups = getBackups(networkId); |
| 429 | |
| 430 | boolean modified = false; |
| 431 | List<NodeId> stbys = backups.getOrDefault(deviceId, new ArrayList<>()); |
| 432 | if (nodeId != null && !stbys.contains(nodeId)) { |
| 433 | stbys.add(nodeId); |
| 434 | backups.put(deviceId, stbys); |
| 435 | modified = true; |
| 436 | } |
| 437 | return modified; |
| 438 | } |
| 439 | |
| 440 | /** |
| 441 | * Returns deviceId-master map for a specified virtual network. |
| 442 | * |
| 443 | * @param networkId a virtual network identifier |
| 444 | * @return DeviceId-master map of a given virtual network. |
| 445 | */ |
| 446 | private Map<DeviceId, NodeId> getMasterMap(NetworkId networkId) { |
| 447 | return masterMapByNetwork.computeIfAbsent(networkId, k -> new HashMap<>()); |
| 448 | } |
| 449 | |
| 450 | /** |
| 451 | * Returns deviceId-backups map for a specified virtual network. |
| 452 | * |
| 453 | * @param networkId a virtual network identifier |
| 454 | * @return DeviceId-backups map of a given virtual network. |
| 455 | */ |
| 456 | private Map<DeviceId, List<NodeId>> getBackups(NetworkId networkId) { |
| 457 | return backupsByNetwork.computeIfAbsent(networkId, k -> new HashMap<>()); |
| 458 | } |
| 459 | |
| 460 | /** |
| 461 | * Returns deviceId-terms map for a specified virtual network. |
| 462 | * |
| 463 | * @param networkId a virtual network identifier |
| 464 | * @return DeviceId-terms map of a given virtual network. |
| 465 | */ |
| 466 | private Map<DeviceId, AtomicInteger> getTermMap(NetworkId networkId) { |
| 467 | return termMapByNetwork.computeIfAbsent(networkId, k -> new HashMap<>()); |
| 468 | } |
| 469 | |
| 470 | /** |
| 471 | * Returns a fake cluster service for a test purpose only. |
| 472 | * |
| 473 | * @return a fake cluster service |
| 474 | */ |
| 475 | private ClusterService createFakeClusterService() { |
| 476 | // just for ease of unit test |
| 477 | final ControllerNode instance = |
| 478 | new DefaultControllerNode(new NodeId("local"), |
| 479 | IpAddress.valueOf("127.0.0.1")); |
| 480 | |
| 481 | ClusterService faceClusterService = new ClusterService() { |
| 482 | |
Yuta HIGUCHI | 0c47d53 | 2017-08-18 23:16:35 -0700 | [diff] [blame] | 483 | private final Instant creationTime = Instant.now(); |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 484 | |
| 485 | @Override |
| 486 | public ControllerNode getLocalNode() { |
| 487 | return instance; |
| 488 | } |
| 489 | |
| 490 | @Override |
| 491 | public Set<ControllerNode> getNodes() { |
| 492 | return ImmutableSet.of(instance); |
| 493 | } |
| 494 | |
| 495 | @Override |
Jordan Halterman | 00e92da | 2018-05-22 23:05:52 -0700 | [diff] [blame] | 496 | public Set<Node> getConsensusNodes() { |
| 497 | return ImmutableSet.of(); |
| 498 | } |
| 499 | |
| 500 | @Override |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 501 | public ControllerNode getNode(NodeId nodeId) { |
| 502 | if (instance.id().equals(nodeId)) { |
| 503 | return instance; |
| 504 | } |
| 505 | return null; |
| 506 | } |
| 507 | |
| 508 | @Override |
| 509 | public ControllerNode.State getState(NodeId nodeId) { |
| 510 | if (instance.id().equals(nodeId)) { |
| 511 | return ControllerNode.State.ACTIVE; |
| 512 | } else { |
| 513 | return ControllerNode.State.INACTIVE; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | @Override |
Jordan Halterman | f70bf46 | 2017-07-29 13:12:00 -0700 | [diff] [blame] | 518 | public Version getVersion(NodeId nodeId) { |
| 519 | if (instance.id().equals(nodeId)) { |
| 520 | return versionService.version(); |
| 521 | } |
| 522 | return null; |
| 523 | } |
| 524 | |
| 525 | @Override |
Yuta HIGUCHI | 0c47d53 | 2017-08-18 23:16:35 -0700 | [diff] [blame] | 526 | public Instant getLastUpdatedInstant(NodeId nodeId) { |
Yoonseon Han | a327701 | 2017-05-22 12:26:21 -0700 | [diff] [blame] | 527 | return creationTime; |
| 528 | } |
| 529 | |
| 530 | @Override |
| 531 | public void addListener(ClusterEventListener listener) { |
| 532 | } |
| 533 | |
| 534 | @Override |
| 535 | public void removeListener(ClusterEventListener listener) { |
| 536 | } |
| 537 | }; |
| 538 | return faceClusterService; |
Yoonseon Han | a578d76 | 2017-05-08 13:42:02 -0700 | [diff] [blame] | 539 | } |
| 540 | } |