alshabib | 1058080 | 2015-02-18 18:30:33 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.store.group.impl; |
| 17 | |
| 18 | import static org.apache.commons.lang3.concurrent.ConcurrentUtils.createIfAbsentUnchecked; |
| 19 | import static org.slf4j.LoggerFactory.getLogger; |
| 20 | |
| 21 | import java.util.ArrayList; |
| 22 | import java.util.HashMap; |
| 23 | import java.util.List; |
| 24 | import java.util.concurrent.ConcurrentHashMap; |
| 25 | import java.util.concurrent.ConcurrentMap; |
| 26 | import java.util.concurrent.atomic.AtomicInteger; |
| 27 | |
| 28 | import org.apache.felix.scr.annotations.Activate; |
| 29 | import org.apache.felix.scr.annotations.Component; |
| 30 | import org.apache.felix.scr.annotations.Deactivate; |
| 31 | import org.apache.felix.scr.annotations.Service; |
| 32 | import org.onlab.util.NewConcurrentHashMap; |
| 33 | import org.onosproject.core.DefaultGroupId; |
| 34 | import org.onosproject.core.GroupId; |
| 35 | import org.onosproject.net.DeviceId; |
| 36 | import org.onosproject.net.group.DefaultGroup; |
| 37 | import org.onosproject.net.group.DefaultGroupDescription; |
| 38 | import org.onosproject.net.group.Group; |
| 39 | import org.onosproject.net.group.Group.GroupState; |
| 40 | import org.onosproject.net.group.GroupBucket; |
| 41 | import org.onosproject.net.group.GroupBuckets; |
| 42 | import org.onosproject.net.group.GroupDescription; |
| 43 | import org.onosproject.net.group.GroupEvent; |
| 44 | import org.onosproject.net.group.GroupEvent.Type; |
| 45 | import org.onosproject.net.group.GroupKey; |
| 46 | import org.onosproject.net.group.GroupOperation; |
| 47 | import org.onosproject.net.group.GroupStore; |
| 48 | import org.onosproject.net.group.GroupStoreDelegate; |
| 49 | import org.onosproject.net.group.StoredGroupEntry; |
| 50 | import org.onosproject.store.AbstractStore; |
| 51 | import org.slf4j.Logger; |
| 52 | |
| 53 | import com.google.common.base.Function; |
| 54 | import com.google.common.collect.FluentIterable; |
| 55 | |
| 56 | /** |
| 57 | * Manages inventory of group entries using trivial in-memory implementation. |
| 58 | */ |
| 59 | @Component(immediate = true) |
| 60 | @Service |
| 61 | public class DistributedGroupStore |
| 62 | extends AbstractStore<GroupEvent, GroupStoreDelegate> |
| 63 | implements GroupStore { |
| 64 | |
| 65 | private final Logger log = getLogger(getClass()); |
| 66 | |
| 67 | private final int dummyId = 0xffffffff; |
| 68 | private final GroupId dummyGroupId = new DefaultGroupId(dummyId); |
| 69 | |
| 70 | // inner Map is per device group table |
| 71 | private final ConcurrentMap<DeviceId, ConcurrentMap<GroupKey, StoredGroupEntry>> |
| 72 | groupEntriesByKey = new ConcurrentHashMap<>(); |
| 73 | private final ConcurrentMap<DeviceId, ConcurrentMap<GroupId, StoredGroupEntry>> |
| 74 | groupEntriesById = new ConcurrentHashMap<>(); |
| 75 | private final ConcurrentMap<DeviceId, ConcurrentMap<GroupKey, StoredGroupEntry>> |
| 76 | pendingGroupEntriesByKey = new ConcurrentHashMap<>(); |
| 77 | private final ConcurrentMap<DeviceId, ConcurrentMap<GroupId, Group>> |
| 78 | extraneousGroupEntriesById = new ConcurrentHashMap<>(); |
| 79 | |
| 80 | private final HashMap<DeviceId, Boolean> deviceAuditStatus = |
| 81 | new HashMap<DeviceId, Boolean>(); |
| 82 | |
| 83 | private final AtomicInteger groupIdGen = new AtomicInteger(); |
| 84 | |
| 85 | @Activate |
| 86 | public void activate() { |
| 87 | log.info("Started"); |
| 88 | } |
| 89 | |
| 90 | @Deactivate |
| 91 | public void deactivate() { |
| 92 | groupEntriesByKey.clear(); |
| 93 | groupEntriesById.clear(); |
| 94 | log.info("Stopped"); |
| 95 | } |
| 96 | |
| 97 | private static NewConcurrentHashMap<GroupKey, StoredGroupEntry> |
| 98 | lazyEmptyGroupKeyTable() { |
| 99 | return NewConcurrentHashMap.<GroupKey, StoredGroupEntry>ifNeeded(); |
| 100 | } |
| 101 | |
| 102 | private static NewConcurrentHashMap<GroupId, StoredGroupEntry> |
| 103 | lazyEmptyGroupIdTable() { |
| 104 | return NewConcurrentHashMap.<GroupId, StoredGroupEntry>ifNeeded(); |
| 105 | } |
| 106 | |
| 107 | private static NewConcurrentHashMap<GroupKey, StoredGroupEntry> |
| 108 | lazyEmptyPendingGroupKeyTable() { |
| 109 | return NewConcurrentHashMap.<GroupKey, StoredGroupEntry>ifNeeded(); |
| 110 | } |
| 111 | |
| 112 | private static NewConcurrentHashMap<GroupId, Group> |
| 113 | lazyEmptyExtraneousGroupIdTable() { |
| 114 | return NewConcurrentHashMap.<GroupId, Group>ifNeeded(); |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Returns the group key table for specified device. |
| 119 | * |
| 120 | * @param deviceId identifier of the device |
| 121 | * @return Map representing group key table of given device. |
| 122 | */ |
| 123 | private ConcurrentMap<GroupKey, StoredGroupEntry> getGroupKeyTable(DeviceId deviceId) { |
| 124 | return createIfAbsentUnchecked(groupEntriesByKey, |
| 125 | deviceId, lazyEmptyGroupKeyTable()); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Returns the group id table for specified device. |
| 130 | * |
| 131 | * @param deviceId identifier of the device |
| 132 | * @return Map representing group key table of given device. |
| 133 | */ |
| 134 | private ConcurrentMap<GroupId, StoredGroupEntry> getGroupIdTable(DeviceId deviceId) { |
| 135 | return createIfAbsentUnchecked(groupEntriesById, |
| 136 | deviceId, lazyEmptyGroupIdTable()); |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Returns the pending group key table for specified device. |
| 141 | * |
| 142 | * @param deviceId identifier of the device |
| 143 | * @return Map representing group key table of given device. |
| 144 | */ |
| 145 | private ConcurrentMap<GroupKey, StoredGroupEntry> |
| 146 | getPendingGroupKeyTable(DeviceId deviceId) { |
| 147 | return createIfAbsentUnchecked(pendingGroupEntriesByKey, |
| 148 | deviceId, lazyEmptyPendingGroupKeyTable()); |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Returns the extraneous group id table for specified device. |
| 153 | * |
| 154 | * @param deviceId identifier of the device |
| 155 | * @return Map representing group key table of given device. |
| 156 | */ |
| 157 | private ConcurrentMap<GroupId, Group> |
| 158 | getExtraneousGroupIdTable(DeviceId deviceId) { |
| 159 | return createIfAbsentUnchecked(extraneousGroupEntriesById, |
| 160 | deviceId, |
| 161 | lazyEmptyExtraneousGroupIdTable()); |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Returns the number of groups for the specified device in the store. |
| 166 | * |
| 167 | * @return number of groups for the specified device |
| 168 | */ |
| 169 | @Override |
| 170 | public int getGroupCount(DeviceId deviceId) { |
| 171 | return (groupEntriesByKey.get(deviceId) != null) ? |
| 172 | groupEntriesByKey.get(deviceId).size() : 0; |
| 173 | } |
| 174 | |
| 175 | /** |
| 176 | * Returns the groups associated with a device. |
| 177 | * |
| 178 | * @param deviceId the device ID |
| 179 | * |
| 180 | * @return the group entries |
| 181 | */ |
| 182 | @Override |
| 183 | public Iterable<Group> getGroups(DeviceId deviceId) { |
| 184 | // flatten and make iterator unmodifiable |
| 185 | return FluentIterable.from(getGroupKeyTable(deviceId).values()) |
| 186 | .transform( |
| 187 | new Function<StoredGroupEntry, Group>() { |
| 188 | |
| 189 | @Override |
| 190 | public Group apply( |
| 191 | StoredGroupEntry input) { |
| 192 | return input; |
| 193 | } |
| 194 | }); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Returns the stored group entry. |
| 199 | * |
| 200 | * @param deviceId the device ID |
| 201 | * @param appCookie the group key |
| 202 | * |
| 203 | * @return a group associated with the key |
| 204 | */ |
| 205 | @Override |
| 206 | public Group getGroup(DeviceId deviceId, GroupKey appCookie) { |
| 207 | return (groupEntriesByKey.get(deviceId) != null) ? |
| 208 | groupEntriesByKey.get(deviceId).get(appCookie) : |
| 209 | null; |
| 210 | } |
| 211 | |
| 212 | private int getFreeGroupIdValue(DeviceId deviceId) { |
| 213 | int freeId = groupIdGen.incrementAndGet(); |
| 214 | |
| 215 | while (true) { |
| 216 | Group existing = ( |
| 217 | groupEntriesById.get(deviceId) != null) ? |
| 218 | groupEntriesById.get(deviceId).get(new DefaultGroupId(freeId)) : |
| 219 | null; |
| 220 | if (existing == null) { |
| 221 | existing = ( |
| 222 | extraneousGroupEntriesById.get(deviceId) != null) ? |
| 223 | extraneousGroupEntriesById.get(deviceId). |
| 224 | get(new DefaultGroupId(freeId)) : |
| 225 | null; |
| 226 | } |
| 227 | if (existing != null) { |
| 228 | freeId = groupIdGen.incrementAndGet(); |
| 229 | } else { |
| 230 | break; |
| 231 | } |
| 232 | } |
| 233 | return freeId; |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Stores a new group entry using the information from group description. |
| 238 | * |
| 239 | * @param groupDesc group description to be used to create group entry |
| 240 | */ |
| 241 | @Override |
| 242 | public void storeGroupDescription(GroupDescription groupDesc) { |
| 243 | // Check if a group is existing with the same key |
| 244 | if (getGroup(groupDesc.deviceId(), groupDesc.appCookie()) != null) { |
| 245 | return; |
| 246 | } |
| 247 | |
| 248 | if (deviceAuditStatus.get(groupDesc.deviceId()) == null) { |
| 249 | // Device group audit has not completed yet |
| 250 | // Add this group description to pending group key table |
| 251 | // Create a group entry object with Dummy Group ID |
| 252 | StoredGroupEntry group = new DefaultGroup(dummyGroupId, groupDesc); |
| 253 | group.setState(GroupState.WAITING_AUDIT_COMPLETE); |
| 254 | ConcurrentMap<GroupKey, StoredGroupEntry> pendingKeyTable = |
| 255 | getPendingGroupKeyTable(groupDesc.deviceId()); |
| 256 | pendingKeyTable.put(groupDesc.appCookie(), group); |
| 257 | return; |
| 258 | } |
| 259 | |
| 260 | storeGroupDescriptionInternal(groupDesc); |
| 261 | } |
| 262 | |
| 263 | private void storeGroupDescriptionInternal(GroupDescription groupDesc) { |
| 264 | // Check if a group is existing with the same key |
| 265 | if (getGroup(groupDesc.deviceId(), groupDesc.appCookie()) != null) { |
| 266 | return; |
| 267 | } |
| 268 | |
| 269 | // Get a new group identifier |
| 270 | GroupId id = new DefaultGroupId(getFreeGroupIdValue(groupDesc.deviceId())); |
| 271 | // Create a group entry object |
| 272 | StoredGroupEntry group = new DefaultGroup(id, groupDesc); |
| 273 | // Insert the newly created group entry into concurrent key and id maps |
| 274 | ConcurrentMap<GroupKey, StoredGroupEntry> keyTable = |
| 275 | getGroupKeyTable(groupDesc.deviceId()); |
| 276 | keyTable.put(groupDesc.appCookie(), group); |
| 277 | ConcurrentMap<GroupId, StoredGroupEntry> idTable = |
| 278 | getGroupIdTable(groupDesc.deviceId()); |
| 279 | idTable.put(id, group); |
| 280 | notifyDelegate(new GroupEvent(GroupEvent.Type.GROUP_ADD_REQUESTED, |
| 281 | group)); |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * Updates the existing group entry with the information |
| 286 | * from group description. |
| 287 | * |
| 288 | * @param deviceId the device ID |
| 289 | * @param oldAppCookie the current group key |
| 290 | * @param type update type |
| 291 | * @param newBuckets group buckets for updates |
| 292 | * @param newAppCookie optional new group key |
| 293 | */ |
| 294 | @Override |
| 295 | public void updateGroupDescription(DeviceId deviceId, |
| 296 | GroupKey oldAppCookie, |
| 297 | UpdateType type, |
| 298 | GroupBuckets newBuckets, |
| 299 | GroupKey newAppCookie) { |
| 300 | // Check if a group is existing with the provided key |
| 301 | Group oldGroup = getGroup(deviceId, oldAppCookie); |
| 302 | if (oldGroup == null) { |
| 303 | return; |
| 304 | } |
| 305 | |
| 306 | List<GroupBucket> newBucketList = getUpdatedBucketList(oldGroup, |
| 307 | type, |
| 308 | newBuckets); |
| 309 | if (newBucketList != null) { |
| 310 | // Create a new group object from the old group |
| 311 | GroupBuckets updatedBuckets = new GroupBuckets(newBucketList); |
| 312 | GroupKey newCookie = (newAppCookie != null) ? newAppCookie : oldAppCookie; |
| 313 | GroupDescription updatedGroupDesc = new DefaultGroupDescription( |
| 314 | oldGroup.deviceId(), |
| 315 | oldGroup.type(), |
| 316 | updatedBuckets, |
| 317 | newCookie, |
| 318 | oldGroup.appId()); |
| 319 | StoredGroupEntry newGroup = new DefaultGroup(oldGroup.id(), |
| 320 | updatedGroupDesc); |
| 321 | newGroup.setState(GroupState.PENDING_UPDATE); |
| 322 | newGroup.setLife(oldGroup.life()); |
| 323 | newGroup.setPackets(oldGroup.packets()); |
| 324 | newGroup.setBytes(oldGroup.bytes()); |
| 325 | // Remove the old entry from maps and add new entry using new key |
| 326 | ConcurrentMap<GroupKey, StoredGroupEntry> keyTable = |
| 327 | getGroupKeyTable(oldGroup.deviceId()); |
| 328 | ConcurrentMap<GroupId, StoredGroupEntry> idTable = |
| 329 | getGroupIdTable(oldGroup.deviceId()); |
| 330 | keyTable.remove(oldGroup.appCookie()); |
| 331 | idTable.remove(oldGroup.id()); |
| 332 | keyTable.put(newGroup.appCookie(), newGroup); |
| 333 | idTable.put(newGroup.id(), newGroup); |
| 334 | notifyDelegate(new GroupEvent(Type.GROUP_UPDATE_REQUESTED, newGroup)); |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | private List<GroupBucket> getUpdatedBucketList(Group oldGroup, |
| 339 | UpdateType type, |
| 340 | GroupBuckets buckets) { |
| 341 | GroupBuckets oldBuckets = oldGroup.buckets(); |
| 342 | List<GroupBucket> newBucketList = new ArrayList<GroupBucket>( |
| 343 | oldBuckets.buckets()); |
| 344 | boolean groupDescUpdated = false; |
| 345 | |
| 346 | if (type == UpdateType.ADD) { |
| 347 | // Check if the any of the new buckets are part of |
| 348 | // the old bucket list |
| 349 | for (GroupBucket addBucket:buckets.buckets()) { |
| 350 | if (!newBucketList.contains(addBucket)) { |
| 351 | newBucketList.add(addBucket); |
| 352 | groupDescUpdated = true; |
| 353 | } |
| 354 | } |
| 355 | } else if (type == UpdateType.REMOVE) { |
| 356 | // Check if the to be removed buckets are part of the |
| 357 | // old bucket list |
| 358 | for (GroupBucket removeBucket:buckets.buckets()) { |
| 359 | if (newBucketList.contains(removeBucket)) { |
| 360 | newBucketList.remove(removeBucket); |
| 361 | groupDescUpdated = true; |
| 362 | } |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | if (groupDescUpdated) { |
| 367 | return newBucketList; |
| 368 | } else { |
| 369 | return null; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | /** |
| 374 | * Triggers deleting the existing group entry. |
| 375 | * |
| 376 | * @param deviceId the device ID |
| 377 | * @param appCookie the group key |
| 378 | */ |
| 379 | @Override |
| 380 | public void deleteGroupDescription(DeviceId deviceId, |
| 381 | GroupKey appCookie) { |
| 382 | // Check if a group is existing with the provided key |
| 383 | StoredGroupEntry existing = (groupEntriesByKey.get(deviceId) != null) ? |
| 384 | groupEntriesByKey.get(deviceId).get(appCookie) : |
| 385 | null; |
| 386 | if (existing == null) { |
| 387 | return; |
| 388 | } |
| 389 | |
| 390 | synchronized (existing) { |
| 391 | existing.setState(GroupState.PENDING_DELETE); |
| 392 | } |
| 393 | notifyDelegate(new GroupEvent(Type.GROUP_REMOVE_REQUESTED, existing)); |
| 394 | } |
| 395 | |
| 396 | /** |
| 397 | * Stores a new group entry, or updates an existing entry. |
| 398 | * |
| 399 | * @param group group entry |
| 400 | */ |
| 401 | @Override |
| 402 | public void addOrUpdateGroupEntry(Group group) { |
| 403 | // check if this new entry is an update to an existing entry |
| 404 | StoredGroupEntry existing = (groupEntriesById.get( |
| 405 | group.deviceId()) != null) ? |
| 406 | groupEntriesById.get(group.deviceId()).get(group.id()) : |
| 407 | null; |
| 408 | GroupEvent event = null; |
| 409 | |
| 410 | if (existing != null) { |
| 411 | synchronized (existing) { |
| 412 | existing.setLife(group.life()); |
| 413 | existing.setPackets(group.packets()); |
| 414 | existing.setBytes(group.bytes()); |
| 415 | if (existing.state() == GroupState.PENDING_ADD) { |
| 416 | existing.setState(GroupState.ADDED); |
| 417 | event = new GroupEvent(Type.GROUP_ADDED, existing); |
| 418 | } else { |
| 419 | if (existing.state() == GroupState.PENDING_UPDATE) { |
| 420 | existing.setState(GroupState.PENDING_UPDATE); |
| 421 | } |
| 422 | event = new GroupEvent(Type.GROUP_UPDATED, existing); |
| 423 | } |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | if (event != null) { |
| 428 | notifyDelegate(event); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | /** |
| 433 | * Removes the group entry from store. |
| 434 | * |
| 435 | * @param group group entry |
| 436 | */ |
| 437 | @Override |
| 438 | public void removeGroupEntry(Group group) { |
| 439 | StoredGroupEntry existing = (groupEntriesById.get( |
| 440 | group.deviceId()) != null) ? |
| 441 | groupEntriesById.get(group.deviceId()).get(group.id()) : |
| 442 | null; |
| 443 | |
| 444 | if (existing != null) { |
| 445 | ConcurrentMap<GroupKey, StoredGroupEntry> keyTable = |
| 446 | getGroupKeyTable(existing.deviceId()); |
| 447 | ConcurrentMap<GroupId, StoredGroupEntry> idTable = |
| 448 | getGroupIdTable(existing.deviceId()); |
| 449 | idTable.remove(existing.id()); |
| 450 | keyTable.remove(existing.appCookie()); |
| 451 | notifyDelegate(new GroupEvent(Type.GROUP_REMOVED, existing)); |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | @Override |
| 456 | public void deviceInitialAuditCompleted(DeviceId deviceId, |
| 457 | boolean completed) { |
| 458 | synchronized (deviceAuditStatus) { |
| 459 | if (completed) { |
| 460 | log.debug("deviceInitialAuditCompleted: AUDIT " |
| 461 | + "completed for device {}", deviceId); |
| 462 | deviceAuditStatus.put(deviceId, true); |
| 463 | // Execute all pending group requests |
| 464 | ConcurrentMap<GroupKey, StoredGroupEntry> pendingGroupRequests = |
| 465 | getPendingGroupKeyTable(deviceId); |
| 466 | for (Group group:pendingGroupRequests.values()) { |
| 467 | GroupDescription tmp = new DefaultGroupDescription( |
| 468 | group.deviceId(), |
| 469 | group.type(), |
| 470 | group.buckets(), |
| 471 | group.appCookie(), |
| 472 | group.appId()); |
| 473 | storeGroupDescriptionInternal(tmp); |
| 474 | } |
| 475 | getPendingGroupKeyTable(deviceId).clear(); |
| 476 | } else { |
| 477 | if (deviceAuditStatus.get(deviceId)) { |
| 478 | log.debug("deviceInitialAuditCompleted: Clearing AUDIT " |
| 479 | + "status for device {}", deviceId); |
| 480 | deviceAuditStatus.put(deviceId, false); |
| 481 | } |
| 482 | } |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | @Override |
| 487 | public boolean deviceInitialAuditStatus(DeviceId deviceId) { |
| 488 | synchronized (deviceAuditStatus) { |
| 489 | return (deviceAuditStatus.get(deviceId) != null) |
| 490 | ? deviceAuditStatus.get(deviceId) : false; |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | @Override |
| 495 | public void groupOperationFailed(DeviceId deviceId, GroupOperation operation) { |
| 496 | |
| 497 | StoredGroupEntry existing = (groupEntriesById.get( |
| 498 | deviceId) != null) ? |
| 499 | groupEntriesById.get(deviceId).get(operation.groupId()) : |
| 500 | null; |
| 501 | |
| 502 | if (existing == null) { |
| 503 | log.warn("No group entry with ID {} found ", operation.groupId()); |
| 504 | return; |
| 505 | } |
| 506 | |
| 507 | switch (operation.opType()) { |
| 508 | case ADD: |
| 509 | notifyDelegate(new GroupEvent(Type.GROUP_ADD_FAILED, existing)); |
| 510 | break; |
| 511 | case MODIFY: |
| 512 | notifyDelegate(new GroupEvent(Type.GROUP_UPDATE_FAILED, existing)); |
| 513 | break; |
| 514 | case DELETE: |
| 515 | notifyDelegate(new GroupEvent(Type.GROUP_REMOVE_FAILED, existing)); |
| 516 | break; |
| 517 | default: |
| 518 | log.warn("Unknown group operation type {}", operation.opType()); |
| 519 | } |
| 520 | |
| 521 | ConcurrentMap<GroupKey, StoredGroupEntry> keyTable = |
| 522 | getGroupKeyTable(existing.deviceId()); |
| 523 | ConcurrentMap<GroupId, StoredGroupEntry> idTable = |
| 524 | getGroupIdTable(existing.deviceId()); |
| 525 | idTable.remove(existing.id()); |
| 526 | keyTable.remove(existing.appCookie()); |
| 527 | } |
| 528 | |
| 529 | @Override |
| 530 | public void addOrUpdateExtraneousGroupEntry(Group group) { |
| 531 | ConcurrentMap<GroupId, Group> extraneousIdTable = |
| 532 | getExtraneousGroupIdTable(group.deviceId()); |
| 533 | extraneousIdTable.put(group.id(), group); |
| 534 | // Check the reference counter |
| 535 | if (group.referenceCount() == 0) { |
| 536 | notifyDelegate(new GroupEvent(Type.GROUP_REMOVE_REQUESTED, group)); |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | @Override |
| 541 | public void removeExtraneousGroupEntry(Group group) { |
| 542 | ConcurrentMap<GroupId, Group> extraneousIdTable = |
| 543 | getExtraneousGroupIdTable(group.deviceId()); |
| 544 | extraneousIdTable.remove(group.id()); |
| 545 | } |
| 546 | |
| 547 | @Override |
| 548 | public Iterable<Group> getExtraneousGroups(DeviceId deviceId) { |
| 549 | // flatten and make iterator unmodifiable |
| 550 | return FluentIterable.from( |
| 551 | getExtraneousGroupIdTable(deviceId).values()); |
| 552 | } |
| 553 | |
| 554 | |
| 555 | } |