opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/ShardManagerTest.java

   1 /*
   2  * Copyright (c) 2014, 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.cluster.datastore;
  10
  11 import static org.junit.Assert.assertEquals;
  12 import static org.junit.Assert.assertNotNull;
  13 import static org.junit.Assert.assertNull;
  14 import static org.junit.Assert.assertSame;
  15 import static org.junit.Assert.assertTrue;
  16 import static org.mockito.Mockito.mock;
  17 import static org.mockito.Mockito.never;
  18 import static org.mockito.Mockito.times;
  19 import static org.mockito.Mockito.verify;
  20 import akka.actor.ActorRef;
  21 import akka.actor.ActorSystem;
  22 import akka.actor.AddressFromURIString;
  23 import akka.actor.PoisonPill;
  24 import akka.actor.Props;
  25 import akka.actor.Status;
  26 import akka.actor.Status.Failure;
  27 import akka.cluster.Cluster;
  28 import akka.cluster.ClusterEvent;
  29 import akka.dispatch.Dispatchers;
  30 import akka.japi.Creator;
  31 import akka.pattern.Patterns;
  32 import akka.persistence.RecoveryCompleted;
  33 import akka.testkit.JavaTestKit;
  34 import akka.testkit.TestActorRef;
  35 import akka.util.Timeout;
  36 import com.google.common.base.Optional;
  37 import com.google.common.collect.ImmutableMap;
  38 import com.google.common.collect.ImmutableSet;
  39 import com.google.common.collect.Sets;
  40 import com.google.common.util.concurrent.Uninterruptibles;
  41 import com.typesafe.config.ConfigFactory;
  42 import java.net.URI;
  43 import java.util.AbstractMap;
  44 import java.util.Arrays;
  45 import java.util.Collection;
  46 import java.util.Collections;
  47 import java.util.HashMap;
  48 import java.util.HashSet;
  49 import java.util.List;
  50 import java.util.Map;
  51 import java.util.Map.Entry;
  52 import java.util.Set;
  53 import java.util.concurrent.CountDownLatch;
  54 import java.util.concurrent.TimeUnit;
  55 import org.junit.After;
  56 import org.junit.Before;
  57 import org.junit.Test;
  58 import org.mockito.Mock;
  59 import org.mockito.Mockito;
  60 import org.mockito.MockitoAnnotations;
  61 import org.opendaylight.controller.cluster.datastore.config.Configuration;
  62 import org.opendaylight.controller.cluster.datastore.config.ConfigurationImpl;
  63 import org.opendaylight.controller.cluster.datastore.config.EmptyModuleShardConfigProvider;
  64 import org.opendaylight.controller.cluster.datastore.config.ModuleShardConfiguration;
  65 import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException;
  66 import org.opendaylight.controller.cluster.datastore.exceptions.NotInitializedException;
  67 import org.opendaylight.controller.cluster.datastore.exceptions.PrimaryNotFoundException;
  68 import org.opendaylight.controller.cluster.datastore.identifiers.ShardIdentifier;
  69 import org.opendaylight.controller.cluster.datastore.identifiers.ShardManagerIdentifier;
  70 import org.opendaylight.controller.cluster.datastore.messages.ActorInitialized;
  71 import org.opendaylight.controller.cluster.datastore.messages.AddShardReplica;
  72 import org.opendaylight.controller.cluster.datastore.messages.CreateShard;
  73 import org.opendaylight.controller.cluster.datastore.messages.CreateShardReply;
  74 import org.opendaylight.controller.cluster.datastore.messages.DatastoreSnapshot;
  75 import org.opendaylight.controller.cluster.datastore.messages.DatastoreSnapshot.ShardSnapshot;
  76 import org.opendaylight.controller.cluster.datastore.messages.FindLocalShard;
  77 import org.opendaylight.controller.cluster.datastore.messages.FindPrimary;
  78 import org.opendaylight.controller.cluster.datastore.messages.LocalPrimaryShardFound;
  79 import org.opendaylight.controller.cluster.datastore.messages.LocalShardFound;
  80 import org.opendaylight.controller.cluster.datastore.messages.LocalShardNotFound;
  81 import org.opendaylight.controller.cluster.datastore.messages.PeerDown;
  82 import org.opendaylight.controller.cluster.datastore.messages.PeerUp;
  83 import org.opendaylight.controller.cluster.datastore.messages.PrimaryShardInfo;
  84 import org.opendaylight.controller.cluster.datastore.messages.RemotePrimaryShardFound;
  85 import org.opendaylight.controller.cluster.datastore.messages.RemoveShardReplica;
  86 import org.opendaylight.controller.cluster.datastore.messages.ShardLeaderStateChanged;
  87 import org.opendaylight.controller.cluster.datastore.messages.SwitchShardBehavior;
  88 import org.opendaylight.controller.cluster.datastore.messages.UpdateSchemaContext;
  89 import org.opendaylight.controller.cluster.datastore.utils.MockClusterWrapper;
  90 import org.opendaylight.controller.cluster.datastore.utils.MockConfiguration;
  91 import org.opendaylight.controller.cluster.datastore.utils.PrimaryShardInfoFutureCache;
  92 import org.opendaylight.controller.cluster.notifications.LeaderStateChanged;
  93 import org.opendaylight.controller.cluster.notifications.RegisterRoleChangeListener;
  94 import org.opendaylight.controller.cluster.notifications.RoleChangeNotification;
  95 import org.opendaylight.controller.cluster.raft.RaftState;
  96 import org.opendaylight.controller.cluster.raft.base.messages.FollowerInitialSyncUpStatus;
  97 import org.opendaylight.controller.cluster.raft.base.messages.SwitchBehavior;
  98 import org.opendaylight.controller.cluster.raft.client.messages.GetSnapshot;
  99 import org.opendaylight.controller.cluster.raft.messages.AddServer;
 100 import org.opendaylight.controller.cluster.raft.messages.AddServerReply;
 101 import org.opendaylight.controller.cluster.raft.messages.ServerChangeStatus;
 102 import org.opendaylight.controller.cluster.raft.utils.InMemoryJournal;
 103 import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
 104 import org.opendaylight.controller.md.cluster.datastore.model.TestModel;
 105 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
 106 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
 107 import scala.concurrent.Await;
 108 import scala.concurrent.Future;
 109 import scala.concurrent.duration.FiniteDuration;
 110
 111 public class ShardManagerTest extends AbstractActorTest {
 112     private static int ID_COUNTER = 1;
 113
 114     private final String shardMrgIDSuffix = "config" + ID_COUNTER++;
 115     private final String shardMgrID = "shard-manager-" + shardMrgIDSuffix;
 116
 117     @Mock
 118     private static CountDownLatch ready;
 119
 120     private static TestActorRef<MessageCollectorActor> mockShardActor;
 121
 122     private static String mockShardName;
 123
 124     private final DatastoreContext.Builder datastoreContextBuilder = DatastoreContext.newBuilder().
 125             dataStoreType(shardMrgIDSuffix).shardInitializationTimeout(600, TimeUnit.MILLISECONDS)
 126                    .shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(6);
 127
 128     private static ActorRef newMockShardActor(ActorSystem system, String shardName, String memberName) {
 129         String name = new ShardIdentifier(shardName, memberName,"config").toString();
 130         return TestActorRef.create(system, Props.create(MessageCollectorActor.class), name);
 131     }
 132
 133     private final PrimaryShardInfoFutureCache primaryShardInfoCache = new PrimaryShardInfoFutureCache();
 134
 135     @Before
 136     public void setUp() {
 137         MockitoAnnotations.initMocks(this);
 138
 139         InMemoryJournal.clear();
 140
 141         if(mockShardActor == null) {
 142             mockShardName = new ShardIdentifier(Shard.DEFAULT_NAME, "member-1", "config").toString();
 143             mockShardActor = TestActorRef.create(getSystem(), Props.create(MessageCollectorActor.class), mockShardName);
 144         }
 145
 146         mockShardActor.underlyingActor().clear();
 147     }
 148
 149     @After
 150     public void tearDown() {
 151         InMemoryJournal.clear();
 152     }
 153
 154     private Props newShardMgrProps() {
 155         return newShardMgrProps(new MockConfiguration());
 156     }
 157
 158     private static DatastoreContextFactory newDatastoreContextFactory(DatastoreContext datastoreContext) {
 159         DatastoreContextFactory mockFactory = mock(DatastoreContextFactory.class);
 160         Mockito.doReturn(datastoreContext).when(mockFactory).getBaseDatastoreContext();
 161         Mockito.doReturn(datastoreContext).when(mockFactory).getShardDatastoreContext(Mockito.anyString());
 162         return mockFactory;
 163     }
 164
 165     private Props newShardMgrProps(Configuration config) {
 166         return ShardManager.builder().cluster(new MockClusterWrapper()).configuration(config).
 167                 datastoreContextFactory(newDatastoreContextFactory(datastoreContextBuilder.build())).
 168                 waitTillReadyCountdownLatch(ready).primaryShardInfoCache(primaryShardInfoCache).props();
 169     }
 170
 171     private Props newPropsShardMgrWithMockShardActor() {
 172         return newPropsShardMgrWithMockShardActor("shardManager", mockShardActor, new MockClusterWrapper(),
 173                 new MockConfiguration());
 174     }
 175
 176     private Props newPropsShardMgrWithMockShardActor(final String name, final ActorRef shardActor,
 177             final ClusterWrapper clusterWrapper, final Configuration config) {
 178         Creator<ShardManager> creator = new Creator<ShardManager>() {
 179             private static final long serialVersionUID = 1L;
 180             @Override
 181             public ShardManager create() throws Exception {
 182                 return new ForwardingShardManager(ShardManager.builder().cluster(clusterWrapper).configuration(config).
 183                         datastoreContextFactory(newDatastoreContextFactory(datastoreContextBuilder.build())).
 184                         waitTillReadyCountdownLatch(ready).primaryShardInfoCache(primaryShardInfoCache), name, shardActor);
 185             }
 186         };
 187
 188         return Props.create(new DelegatingShardManagerCreator(creator)).withDispatcher(Dispatchers.DefaultDispatcherId());
 189     }
 190
 191     @Test
 192     public void testPerShardDatastoreContext() throws Exception {
 193         final DatastoreContextFactory mockFactory = newDatastoreContextFactory(
 194                 datastoreContextBuilder.shardElectionTimeoutFactor(5).build());
 195
 196         Mockito.doReturn(DatastoreContext.newBuilderFrom(datastoreContextBuilder.build()).
 197                 shardElectionTimeoutFactor(6).build()).when(mockFactory).getShardDatastoreContext("default");
 198
 199         Mockito.doReturn(DatastoreContext.newBuilderFrom(datastoreContextBuilder.build()).
 200                 shardElectionTimeoutFactor(7).build()).when(mockFactory).getShardDatastoreContext("topology");
 201
 202         final MockConfiguration mockConfig = new MockConfiguration() {
 203             @Override
 204             public Collection<String> getMemberShardNames(String memberName) {
 205                 return Arrays.asList("default", "topology");
 206             }
 207
 208             @Override
 209             public Collection<String> getMembersFromShardName(String shardName) {
 210                 return Arrays.asList("member-1");
 211             }
 212         };
 213
 214         final TestActorRef<MessageCollectorActor> defaultShardActor = TestActorRef.create(getSystem(),
 215                 Props.create(MessageCollectorActor.class), "default");
 216         final TestActorRef<MessageCollectorActor> topologyShardActor = TestActorRef.create(getSystem(),
 217                 Props.create(MessageCollectorActor.class), "topology");
 218
 219         final Map<String, Entry<ActorRef, DatastoreContext>> shardInfoMap = Collections.synchronizedMap(
 220                 new HashMap<String, Entry<ActorRef, DatastoreContext>>());
 221         shardInfoMap.put("default", new AbstractMap.SimpleEntry<ActorRef, DatastoreContext>(defaultShardActor, null));
 222         shardInfoMap.put("topology", new AbstractMap.SimpleEntry<ActorRef, DatastoreContext>(topologyShardActor, null));
 223
 224         final CountDownLatch newShardActorLatch = new CountDownLatch(2);
 225         final Creator<ShardManager> creator = new Creator<ShardManager>() {
 226             private static final long serialVersionUID = 1L;
 227             @Override
 228             public ShardManager create() throws Exception {
 229                 return new ShardManager(ShardManager.builder().cluster(new MockClusterWrapper()).configuration(mockConfig).
 230                         datastoreContextFactory(mockFactory).waitTillReadyCountdownLatch(ready).
 231                         primaryShardInfoCache(primaryShardInfoCache)) {
 232                     @Override
 233                     protected ActorRef newShardActor(SchemaContext schemaContext, ShardInformation info) {
 234                         Entry<ActorRef, DatastoreContext> entry = shardInfoMap.get(info.getShardName());
 235                         ActorRef ref = null;
 236                         if(entry != null) {
 237                             ref = entry.getKey();
 238                             entry.setValue(info.getDatastoreContext());
 239                         }
 240
 241                         newShardActorLatch.countDown();
 242                         return ref;
 243                     }
 244                 };
 245             }
 246         };
 247
 248         JavaTestKit kit = new JavaTestKit(getSystem());
 249
 250         final ActorRef shardManager = getSystem().actorOf(Props.create(new DelegatingShardManagerCreator(creator)).
 251                     withDispatcher(Dispatchers.DefaultDispatcherId()));
 252
 253         shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), kit.getRef());
 254
 255         assertEquals("Shard actors created", true, newShardActorLatch.await(5, TimeUnit.SECONDS));
 256         assertEquals("getShardElectionTimeoutFactor", 6, shardInfoMap.get("default").getValue().
 257                 getShardElectionTimeoutFactor());
 258         assertEquals("getShardElectionTimeoutFactor", 7, shardInfoMap.get("topology").getValue().
 259                 getShardElectionTimeoutFactor());
 260
 261         DatastoreContextFactory newMockFactory = newDatastoreContextFactory(
 262                 datastoreContextBuilder.shardElectionTimeoutFactor(5).build());
 263         Mockito.doReturn(DatastoreContext.newBuilderFrom(datastoreContextBuilder.build()).
 264                 shardElectionTimeoutFactor(66).build()).when(newMockFactory).getShardDatastoreContext("default");
 265
 266         Mockito.doReturn(DatastoreContext.newBuilderFrom(datastoreContextBuilder.build()).
 267                 shardElectionTimeoutFactor(77).build()).when(newMockFactory).getShardDatastoreContext("topology");
 268
 269         shardManager.tell(newMockFactory, kit.getRef());
 270
 271         DatastoreContext newContext = MessageCollectorActor.expectFirstMatching(defaultShardActor, DatastoreContext.class);
 272         assertEquals("getShardElectionTimeoutFactor", 66, newContext.getShardElectionTimeoutFactor());
 273
 274         newContext = MessageCollectorActor.expectFirstMatching(topologyShardActor, DatastoreContext.class);
 275         assertEquals("getShardElectionTimeoutFactor", 77, newContext.getShardElectionTimeoutFactor());
 276
 277         defaultShardActor.tell(PoisonPill.getInstance(), ActorRef.noSender());
 278         topologyShardActor.tell(PoisonPill.getInstance(), ActorRef.noSender());
 279     }
 280
 281     @Test
 282     public void testOnReceiveFindPrimaryForNonExistentShard() throws Exception {
 283         new JavaTestKit(getSystem()) {{
 284             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 285
 286             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 287
 288             shardManager.tell(new FindPrimary("non-existent", false), getRef());
 289
 290             expectMsgClass(duration("5 seconds"), PrimaryNotFoundException.class);
 291         }};
 292     }
 293
 294     @Test
 295     public void testOnReceiveFindPrimaryForLocalLeaderShard() throws Exception {
 296         new JavaTestKit(getSystem()) {{
 297             String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 298
 299             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 300
 301             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 302             shardManager.tell(new ActorInitialized(), mockShardActor);
 303
 304             DataTree mockDataTree = mock(DataTree.class);
 305             shardManager.tell(new ShardLeaderStateChanged(memberId, memberId, Optional.of(mockDataTree),
 306                     DataStoreVersions.CURRENT_VERSION), getRef());
 307
 308             MessageCollectorActor.expectFirstMatching(mockShardActor, RegisterRoleChangeListener.class);
 309             shardManager.tell((new RoleChangeNotification(memberId, RaftState.Candidate.name(),
 310                     RaftState.Leader.name())), mockShardActor);
 311
 312             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 313
 314             LocalPrimaryShardFound primaryFound = expectMsgClass(duration("5 seconds"), LocalPrimaryShardFound.class);
 315             assertTrue("Unexpected primary path " +  primaryFound.getPrimaryPath(),
 316                     primaryFound.getPrimaryPath().contains("member-1-shard-default"));
 317             assertSame("getLocalShardDataTree", mockDataTree, primaryFound.getLocalShardDataTree() );
 318         }};
 319     }
 320
 321     @Test
 322     public void testOnReceiveFindPrimaryForNonLocalLeaderShardBeforeMemberUp() throws Exception {
 323         new JavaTestKit(getSystem()) {{
 324             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 325
 326             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 327             shardManager.tell(new ActorInitialized(), mockShardActor);
 328
 329             String memberId2 = "member-2-shard-default-" + shardMrgIDSuffix;
 330             String memberId1 = "member-1-shard-default-" + shardMrgIDSuffix;
 331             shardManager.tell(new RoleChangeNotification(memberId1,
 332                     RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor);
 333             shardManager.tell(new LeaderStateChanged(memberId1, memberId2, DataStoreVersions.CURRENT_VERSION), mockShardActor);
 334
 335             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 336
 337             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 338         }};
 339     }
 340
 341     @Test
 342     public void testOnReceiveFindPrimaryForNonLocalLeaderShard() throws Exception {
 343         new JavaTestKit(getSystem()) {{
 344             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 345
 346             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 347             shardManager.tell(new ActorInitialized(), mockShardActor);
 348
 349             String memberId2 = "member-2-shard-default-" + shardMrgIDSuffix;
 350             MockClusterWrapper.sendMemberUp(shardManager, "member-2", getRef().path().toString());
 351
 352             String memberId1 = "member-1-shard-default-" + shardMrgIDSuffix;
 353             shardManager.tell(new RoleChangeNotification(memberId1,
 354                     RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor);
 355             short leaderVersion = DataStoreVersions.CURRENT_VERSION - 1;
 356             shardManager.tell(new ShardLeaderStateChanged(memberId1, memberId2, Optional.<DataTree>absent(),
 357                     leaderVersion), mockShardActor);
 358
 359             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 360
 361             RemotePrimaryShardFound primaryFound = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 362             assertTrue("Unexpected primary path " +  primaryFound.getPrimaryPath(),
 363                     primaryFound.getPrimaryPath().contains("member-2-shard-default"));
 364             assertEquals("getPrimaryVersion", leaderVersion, primaryFound.getPrimaryVersion());
 365         }};
 366     }
 367
 368     @Test
 369     public void testOnReceiveFindPrimaryForUninitializedShard() throws Exception {
 370         new JavaTestKit(getSystem()) {{
 371             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 372
 373             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 374
 375             expectMsgClass(duration("5 seconds"), NotInitializedException.class);
 376         }};
 377     }
 378
 379     @Test
 380     public void testOnReceiveFindPrimaryForInitializedShardWithNoRole() throws Exception {
 381         new JavaTestKit(getSystem()) {{
 382             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 383
 384             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 385             shardManager.tell(new ActorInitialized(), mockShardActor);
 386
 387             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 388
 389             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 390         }};
 391     }
 392
 393     @Test
 394     public void testOnReceiveFindPrimaryForFollowerShardWithNoInitialLeaderId() throws Exception {
 395         new JavaTestKit(getSystem()) {{
 396             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 397
 398             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 399             shardManager.tell(new ActorInitialized(), mockShardActor);
 400
 401             String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 402             shardManager.tell(new RoleChangeNotification(memberId,
 403                     RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor);
 404
 405             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 406
 407             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 408
 409             DataTree mockDataTree = mock(DataTree.class);
 410             shardManager.tell(new ShardLeaderStateChanged(memberId, memberId, Optional.of(mockDataTree),
 411                     DataStoreVersions.CURRENT_VERSION), mockShardActor);
 412
 413             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 414
 415             LocalPrimaryShardFound primaryFound = expectMsgClass(duration("5 seconds"), LocalPrimaryShardFound.class);
 416             assertTrue("Unexpected primary path " +  primaryFound.getPrimaryPath(),
 417                     primaryFound.getPrimaryPath().contains("member-1-shard-default"));
 418             assertSame("getLocalShardDataTree", mockDataTree, primaryFound.getLocalShardDataTree() );
 419         }};
 420     }
 421
 422     @Test
 423     public void testOnReceiveFindPrimaryWaitForShardLeader() throws Exception {
 424         new JavaTestKit(getSystem()) {{
 425             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 426
 427             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 428
 429             // We're passing waitUntilInitialized = true to FindPrimary so the response should be
 430             // delayed until we send ActorInitialized and RoleChangeNotification.
 431             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 432
 433             expectNoMsg(FiniteDuration.create(150, TimeUnit.MILLISECONDS));
 434
 435             shardManager.tell(new ActorInitialized(), mockShardActor);
 436
 437             expectNoMsg(FiniteDuration.create(150, TimeUnit.MILLISECONDS));
 438
 439             String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 440             shardManager.tell(new RoleChangeNotification(memberId,
 441                     RaftState.Candidate.name(), RaftState.Leader.name()), mockShardActor);
 442
 443             expectNoMsg(FiniteDuration.create(150, TimeUnit.MILLISECONDS));
 444
 445             DataTree mockDataTree = mock(DataTree.class);
 446             shardManager.tell(new ShardLeaderStateChanged(memberId, memberId, Optional.of(mockDataTree),
 447                     DataStoreVersions.CURRENT_VERSION), mockShardActor);
 448
 449             LocalPrimaryShardFound primaryFound = expectMsgClass(duration("5 seconds"), LocalPrimaryShardFound.class);
 450             assertTrue("Unexpected primary path " +  primaryFound.getPrimaryPath(),
 451                     primaryFound.getPrimaryPath().contains("member-1-shard-default"));
 452             assertSame("getLocalShardDataTree", mockDataTree, primaryFound.getLocalShardDataTree() );
 453
 454             expectNoMsg(FiniteDuration.create(200, TimeUnit.MILLISECONDS));
 455         }};
 456     }
 457
 458     @Test
 459     public void testOnReceiveFindPrimaryWaitForReadyWithUninitializedShard() throws Exception {
 460         new JavaTestKit(getSystem()) {{
 461             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 462
 463             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 464
 465             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 466
 467             expectMsgClass(duration("2 seconds"), NotInitializedException.class);
 468
 469             shardManager.tell(new ActorInitialized(), mockShardActor);
 470
 471             expectNoMsg(FiniteDuration.create(200, TimeUnit.MILLISECONDS));
 472         }};
 473     }
 474
 475     @Test
 476     public void testOnReceiveFindPrimaryWaitForReadyWithCandidateShard() throws Exception {
 477         new JavaTestKit(getSystem()) {{
 478             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 479
 480             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 481             shardManager.tell(new ActorInitialized(), mockShardActor);
 482             shardManager.tell(new RoleChangeNotification("member-1-shard-default-" + shardMrgIDSuffix,
 483                     null, RaftState.Candidate.name()), mockShardActor);
 484
 485             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 486
 487             expectMsgClass(duration("2 seconds"), NoShardLeaderException.class);
 488         }};
 489     }
 490
 491     @Test
 492     public void testOnReceiveFindPrimaryWaitForReadyWithIsolatedLeaderShard() throws Exception {
 493         new JavaTestKit(getSystem()) {{
 494             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 495
 496             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 497             shardManager.tell(new ActorInitialized(), mockShardActor);
 498             shardManager.tell(new RoleChangeNotification("member-1-shard-default-" + shardMrgIDSuffix,
 499                     null, RaftState.IsolatedLeader.name()), mockShardActor);
 500
 501             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 502
 503             expectMsgClass(duration("2 seconds"), NoShardLeaderException.class);
 504         }};
 505     }
 506
 507     @Test
 508     public void testOnReceiveFindPrimaryWaitForReadyWithNoRoleShard() throws Exception {
 509         new JavaTestKit(getSystem()) {{
 510             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 511
 512             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 513             shardManager.tell(new ActorInitialized(), mockShardActor);
 514
 515             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 516
 517             expectMsgClass(duration("2 seconds"), NoShardLeaderException.class);
 518         }};
 519     }
 520
 521     @Test
 522     public void testOnReceiveFindPrimaryForRemoteShard() throws Exception {
 523         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
 524
 525         // Create an ActorSystem ShardManager actor for member-1.
 526
 527         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
 528         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 529
 530         ActorRef mockShardActor1 = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
 531
 532         final TestActorRef<ForwardingShardManager> shardManager1 = TestActorRef.create(system1,
 533                 newPropsShardMgrWithMockShardActor("shardManager1", mockShardActor1, new ClusterWrapperImpl(system1),
 534                         new MockConfiguration()), shardManagerID);
 535
 536         // Create an ActorSystem ShardManager actor for member-2.
 537
 538         final ActorSystem system2 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member2"));
 539
 540         Cluster.get(system2).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 541
 542         final ActorRef mockShardActor2 = newMockShardActor(system2, "astronauts", "member-2");
 543
 544         MockConfiguration mockConfig2 = new MockConfiguration(ImmutableMap.<String, List<String>>builder().
 545                 put("default", Arrays.asList("member-1", "member-2")).
 546                 put("astronauts", Arrays.asList("member-2")).build());
 547
 548         final TestActorRef<ForwardingShardManager> shardManager2 = TestActorRef.create(system2,
 549                 newPropsShardMgrWithMockShardActor("shardManager2", mockShardActor2, new ClusterWrapperImpl(system2),
 550                         mockConfig2), shardManagerID);
 551
 552         new JavaTestKit(system1) {{
 553
 554             shardManager1.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 555             shardManager2.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 556
 557             shardManager2.tell(new ActorInitialized(), mockShardActor2);
 558
 559             String memberId2 = "member-2-shard-astronauts-" + shardMrgIDSuffix;
 560             short leaderVersion = DataStoreVersions.CURRENT_VERSION - 1;
 561             shardManager2.tell(new ShardLeaderStateChanged(memberId2, memberId2,
 562                     Optional.of(mock(DataTree.class)), leaderVersion), mockShardActor2);
 563             shardManager2.tell(new RoleChangeNotification(memberId2,
 564                     RaftState.Candidate.name(), RaftState.Leader.name()), mockShardActor2);
 565
 566             shardManager1.underlyingActor().waitForMemberUp();
 567
 568             shardManager1.tell(new FindPrimary("astronauts", false), getRef());
 569
 570             RemotePrimaryShardFound found = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 571             String path = found.getPrimaryPath();
 572             assertTrue("Unexpected primary path " + path, path.contains("member-2-shard-astronauts-config"));
 573             assertEquals("getPrimaryVersion", leaderVersion, found.getPrimaryVersion());
 574
 575             shardManager2.underlyingActor().verifyFindPrimary();
 576
 577             Cluster.get(system2).down(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 578
 579             shardManager1.underlyingActor().waitForMemberRemoved();
 580
 581             shardManager1.tell(new FindPrimary("astronauts", false), getRef());
 582
 583             expectMsgClass(duration("5 seconds"), PrimaryNotFoundException.class);
 584         }};
 585
 586         JavaTestKit.shutdownActorSystem(system1);
 587         JavaTestKit.shutdownActorSystem(system2);
 588     }
 589
 590     @Test
 591     public void testShardAvailabilityOnChangeOfMemberReachability() throws Exception {
 592         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
 593
 594         // Create an ActorSystem ShardManager actor for member-1.
 595
 596         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
 597         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 598
 599         final ActorRef mockShardActor1 = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
 600
 601         final TestActorRef<ForwardingShardManager> shardManager1 = TestActorRef.create(system1,
 602             newPropsShardMgrWithMockShardActor("shardManager1", mockShardActor1, new ClusterWrapperImpl(system1),
 603                 new MockConfiguration()), shardManagerID);
 604
 605         // Create an ActorSystem ShardManager actor for member-2.
 606
 607         final ActorSystem system2 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member2"));
 608
 609         Cluster.get(system2).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 610
 611         final ActorRef mockShardActor2 = newMockShardActor(system2, Shard.DEFAULT_NAME, "member-2");
 612
 613         MockConfiguration mockConfig2 = new MockConfiguration(ImmutableMap.<String, List<String>>builder().
 614             put("default", Arrays.asList("member-1", "member-2")).build());
 615
 616         final TestActorRef<ForwardingShardManager> shardManager2 = TestActorRef.create(system2,
 617             newPropsShardMgrWithMockShardActor("shardManager2", mockShardActor2, new ClusterWrapperImpl(system2),
 618                 mockConfig2), shardManagerID);
 619
 620         new JavaTestKit(system1) {{
 621
 622             shardManager1.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 623             shardManager2.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 624             shardManager1.tell(new ActorInitialized(), mockShardActor1);
 625             shardManager2.tell(new ActorInitialized(), mockShardActor2);
 626
 627             String memberId2 = "member-2-shard-default-" + shardMrgIDSuffix;
 628             String memberId1 = "member-1-shard-default-" + shardMrgIDSuffix;
 629             shardManager1.tell(new ShardLeaderStateChanged(memberId1, memberId2,
 630                 Optional.of(mock(DataTree.class)), DataStoreVersions.CURRENT_VERSION), mockShardActor1);
 631             shardManager1.tell(new RoleChangeNotification(memberId1,
 632                 RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor1);
 633             shardManager2.tell(new ShardLeaderStateChanged(memberId2, memberId2, Optional.of(mock(DataTree.class)),
 634                     DataStoreVersions.CURRENT_VERSION),
 635                 mockShardActor2);
 636             shardManager2.tell(new RoleChangeNotification(memberId2,
 637                 RaftState.Candidate.name(), RaftState.Leader.name()), mockShardActor2);
 638             shardManager1.underlyingActor().waitForMemberUp();
 639
 640             shardManager1.tell(new FindPrimary("default", true), getRef());
 641
 642             RemotePrimaryShardFound found = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 643             String path = found.getPrimaryPath();
 644             assertTrue("Unexpected primary path " + path, path.contains("member-2-shard-default-config"));
 645
 646             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 647                 createUnreachableMember("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 648
 649             shardManager1.underlyingActor().waitForUnreachableMember();
 650
 651             PeerDown peerDown = MessageCollectorActor.expectFirstMatching(mockShardActor1, PeerDown.class);
 652             assertEquals("getMemberName", "member-2", peerDown.getMemberName());
 653             MessageCollectorActor.clearMessages(mockShardActor1);
 654
 655             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 656                     createMemberRemoved("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 657
 658             MessageCollectorActor.expectFirstMatching(mockShardActor1, PeerDown.class);
 659
 660             shardManager1.tell(new FindPrimary("default", true), getRef());
 661
 662             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 663
 664             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 665                 createReachableMember("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 666
 667             shardManager1.underlyingActor().waitForReachableMember();
 668
 669             PeerUp peerUp = MessageCollectorActor.expectFirstMatching(mockShardActor1, PeerUp.class);
 670             assertEquals("getMemberName", "member-2", peerUp.getMemberName());
 671             MessageCollectorActor.clearMessages(mockShardActor1);
 672
 673             shardManager1.tell(new FindPrimary("default", true), getRef());
 674
 675             RemotePrimaryShardFound found1 = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 676             String path1 = found1.getPrimaryPath();
 677             assertTrue("Unexpected primary path " + path1, path1.contains("member-2-shard-default-config"));
 678
 679             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 680                     createMemberUp("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 681
 682             MessageCollectorActor.expectFirstMatching(mockShardActor1, PeerUp.class);
 683
 684         }};
 685
 686         JavaTestKit.shutdownActorSystem(system1);
 687         JavaTestKit.shutdownActorSystem(system2);
 688     }
 689
 690     @Test
 691     public void testShardAvailabilityChangeOnMemberUnreachableAndLeadershipChange() throws Exception {
 692         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
 693
 694         // Create an ActorSystem ShardManager actor for member-1.
 695
 696         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
 697         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 698
 699         final ActorRef mockShardActor1 = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
 700
 701         final TestActorRef<ForwardingShardManager> shardManager1 = TestActorRef.create(system1,
 702             newPropsShardMgrWithMockShardActor("shardManager1", mockShardActor1, new ClusterWrapperImpl(system1),
 703                 new MockConfiguration()), shardManagerID);
 704
 705         // Create an ActorSystem ShardManager actor for member-2.
 706
 707         final ActorSystem system2 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member2"));
 708
 709         Cluster.get(system2).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 710
 711         final ActorRef mockShardActor2 = newMockShardActor(system2, Shard.DEFAULT_NAME, "member-2");
 712
 713         MockConfiguration mockConfig2 = new MockConfiguration(ImmutableMap.<String, List<String>>builder().
 714             put("default", Arrays.asList("member-1", "member-2")).build());
 715
 716         final TestActorRef<ForwardingShardManager> shardManager2 = TestActorRef.create(system2,
 717             newPropsShardMgrWithMockShardActor("shardManager2", mockShardActor2, new ClusterWrapperImpl(system2),
 718                 mockConfig2), shardManagerID);
 719
 720         new JavaTestKit(system1) {{
 721
 722             shardManager1.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 723             shardManager2.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 724             shardManager1.tell(new ActorInitialized(), mockShardActor1);
 725             shardManager2.tell(new ActorInitialized(), mockShardActor2);
 726
 727             String memberId2 = "member-2-shard-default-" + shardMrgIDSuffix;
 728             String memberId1 = "member-1-shard-default-" + shardMrgIDSuffix;
 729             shardManager1.tell(new ShardLeaderStateChanged(memberId1, memberId2,
 730                 Optional.of(mock(DataTree.class)), DataStoreVersions.CURRENT_VERSION), mockShardActor1);
 731             shardManager1.tell(new RoleChangeNotification(memberId1,
 732                 RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor1);
 733             shardManager2.tell(new ShardLeaderStateChanged(memberId2, memberId2, Optional.of(mock(DataTree.class)),
 734                     DataStoreVersions.CURRENT_VERSION),
 735                 mockShardActor2);
 736             shardManager2.tell(new RoleChangeNotification(memberId2,
 737                 RaftState.Candidate.name(), RaftState.Leader.name()), mockShardActor2);
 738             shardManager1.underlyingActor().waitForMemberUp();
 739
 740             shardManager1.tell(new FindPrimary("default", true), getRef());
 741
 742             RemotePrimaryShardFound found = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 743             String path = found.getPrimaryPath();
 744             assertTrue("Unexpected primary path " + path, path.contains("member-2-shard-default-config"));
 745
 746             primaryShardInfoCache.putSuccessful("default", new PrimaryShardInfo(system1.actorSelection(
 747                     mockShardActor1.path()), DataStoreVersions.CURRENT_VERSION, Optional.<DataTree>absent()));
 748
 749             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 750                 createUnreachableMember("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 751
 752             shardManager1.underlyingActor().waitForUnreachableMember();
 753
 754             shardManager1.tell(new FindPrimary("default", true), getRef());
 755
 756             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 757
 758             assertNull("Expected primaryShardInfoCache entry removed", primaryShardInfoCache.getIfPresent("default"));
 759
 760             shardManager1.tell(new ShardLeaderStateChanged(memberId1, memberId1, Optional.of(mock(DataTree.class)),
 761                     DataStoreVersions.CURRENT_VERSION), mockShardActor1);
 762             shardManager1.tell(new RoleChangeNotification(memberId1,
 763                 RaftState.Follower.name(), RaftState.Leader.name()), mockShardActor1);
 764
 765             shardManager1.tell(new FindPrimary("default", true), getRef());
 766
 767             LocalPrimaryShardFound found1 = expectMsgClass(duration("5 seconds"), LocalPrimaryShardFound.class);
 768             String path1 = found1.getPrimaryPath();
 769             assertTrue("Unexpected primary path " + path1, path1.contains("member-1-shard-default-config"));
 770
 771         }};
 772
 773         JavaTestKit.shutdownActorSystem(system1);
 774         JavaTestKit.shutdownActorSystem(system2);
 775     }
 776
 777
 778     @Test
 779     public void testOnReceiveFindLocalShardForNonExistentShard() throws Exception {
 780         new JavaTestKit(getSystem()) {{
 781             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 782
 783             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 784
 785             shardManager.tell(new FindLocalShard("non-existent", false), getRef());
 786
 787             LocalShardNotFound notFound = expectMsgClass(duration("5 seconds"), LocalShardNotFound.class);
 788
 789             assertEquals("getShardName", "non-existent", notFound.getShardName());
 790         }};
 791     }
 792
 793     @Test
 794     public void testOnReceiveFindLocalShardForExistentShard() throws Exception {
 795         new JavaTestKit(getSystem()) {{
 796             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 797
 798             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 799             shardManager.tell(new ActorInitialized(), mockShardActor);
 800
 801             shardManager.tell(new FindLocalShard(Shard.DEFAULT_NAME, false), getRef());
 802
 803             LocalShardFound found = expectMsgClass(duration("5 seconds"), LocalShardFound.class);
 804
 805             assertTrue("Found path contains " + found.getPath().path().toString(),
 806                     found.getPath().path().toString().contains("member-1-shard-default-config"));
 807         }};
 808     }
 809
 810     @Test
 811     public void testOnReceiveFindLocalShardForNotInitializedShard() throws Exception {
 812         new JavaTestKit(getSystem()) {{
 813             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 814
 815             shardManager.tell(new FindLocalShard(Shard.DEFAULT_NAME, false), getRef());
 816
 817             expectMsgClass(duration("5 seconds"), NotInitializedException.class);
 818         }};
 819     }
 820
 821     @Test
 822     public void testOnReceiveFindLocalShardWaitForShardInitialized() throws Exception {
 823         new JavaTestKit(getSystem()) {{
 824             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 825
 826             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 827
 828             // We're passing waitUntilInitialized = true to FindLocalShard so the response should be
 829             // delayed until we send ActorInitialized.
 830             Future<Object> future = Patterns.ask(shardManager, new FindLocalShard(Shard.DEFAULT_NAME, true),
 831                     new Timeout(5, TimeUnit.SECONDS));
 832
 833             shardManager.tell(new ActorInitialized(), mockShardActor);
 834
 835             Object resp = Await.result(future, duration("5 seconds"));
 836             assertTrue("Expected: LocalShardFound, Actual: " + resp, resp instanceof LocalShardFound);
 837         }};
 838     }
 839
 840     @Test
 841     public void testOnRecoveryJournalIsCleaned() {
 842         InMemoryJournal.addEntry(shardMgrID, 1L, new ShardManager.SchemaContextModules(
 843                 ImmutableSet.of("foo")));
 844         InMemoryJournal.addEntry(shardMgrID, 2L, new ShardManager.SchemaContextModules(
 845                 ImmutableSet.of("bar")));
 846         InMemoryJournal.addDeleteMessagesCompleteLatch(shardMgrID);
 847
 848         new JavaTestKit(getSystem()) {{
 849             TestActorRef<TestShardManager> shardManager = TestActorRef.create(getSystem(),
 850                     Props.create(new TestShardManagerCreator(shardMrgIDSuffix)));
 851
 852             shardManager.underlyingActor().waitForRecoveryComplete();
 853             InMemoryJournal.waitForDeleteMessagesComplete(shardMgrID);
 854
 855             // Journal entries up to the last one should've been deleted
 856             Map<Long, Object> journal = InMemoryJournal.get(shardMgrID);
 857             synchronized (journal) {
 858                 assertEquals("Journal size", 0, journal.size());
 859             }
 860         }};
 861     }
 862
 863     @Test
 864     public void testRoleChangeNotificationAndShardLeaderStateChangedReleaseReady() throws Exception {
 865         new JavaTestKit(getSystem()) {
 866             {
 867                 TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 868
 869                 String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 870                 shardManager.underlyingActor().onReceiveCommand(new RoleChangeNotification(
 871                         memberId, RaftState.Candidate.name(), RaftState.Leader.name()));
 872
 873                 verify(ready, never()).countDown();
 874
 875                 shardManager.underlyingActor().onReceiveCommand(new ShardLeaderStateChanged(memberId, memberId,
 876                         Optional.of(mock(DataTree.class)), DataStoreVersions.CURRENT_VERSION));
 877
 878                 verify(ready, times(1)).countDown();
 879
 880             }};
 881     }
 882
 883     @Test
 884     public void testRoleChangeNotificationToFollowerWithShardLeaderStateChangedReleaseReady() throws Exception {
 885         new JavaTestKit(getSystem()) {
 886             {
 887                 TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 888
 889                 String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 890                 shardManager.underlyingActor().onReceiveCommand(new RoleChangeNotification(
 891                         memberId, null, RaftState.Follower.name()));
 892
 893                 verify(ready, never()).countDown();
 894
 895                 shardManager.underlyingActor().onReceiveCommand(MockClusterWrapper.createMemberUp("member-2", getRef().path().toString()));
 896
 897                 shardManager.underlyingActor().onReceiveCommand(new ShardLeaderStateChanged(memberId,
 898                         "member-2-shard-default-" + shardMrgIDSuffix, Optional.of(mock(DataTree.class)),
 899                         DataStoreVersions.CURRENT_VERSION));
 900
 901                 verify(ready, times(1)).countDown();
 902
 903             }};
 904     }
 905
 906     @Test
 907     public void testReadyCountDownForMemberUpAfterLeaderStateChanged() throws Exception {
 908         new JavaTestKit(getSystem()) {
 909             {
 910                 TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 911
 912                 String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 913                 shardManager.underlyingActor().onReceiveCommand(new RoleChangeNotification(
 914                         memberId, null, RaftState.Follower.name()));
 915
 916                 verify(ready, never()).countDown();
 917
 918                 shardManager.underlyingActor().onReceiveCommand(new ShardLeaderStateChanged(memberId,
 919                         "member-2-shard-default-" + shardMrgIDSuffix, Optional.of(mock(DataTree.class)),
 920                         DataStoreVersions.CURRENT_VERSION));
 921
 922                 shardManager.underlyingActor().onReceiveCommand(MockClusterWrapper.createMemberUp("member-2", getRef().path().toString()));
 923
 924                 verify(ready, times(1)).countDown();
 925
 926             }};
 927     }
 928
 929     @Test
 930     public void testRoleChangeNotificationDoNothingForUnknownShard() throws Exception {
 931         new JavaTestKit(getSystem()) {
 932             {
 933                 TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 934
 935                 shardManager.underlyingActor().onReceiveCommand(new RoleChangeNotification(
 936                         "unknown", RaftState.Candidate.name(), RaftState.Leader.name()));
 937
 938                 verify(ready, never()).countDown();
 939
 940             }};
 941     }
 942
 943
 944     @Test
 945     public void testByDefaultSyncStatusIsFalse() throws Exception{
 946         final Props persistentProps = newShardMgrProps();
 947         final TestActorRef<ShardManager> shardManager =
 948                 TestActorRef.create(getSystem(), persistentProps);
 949
 950         ShardManager shardManagerActor = shardManager.underlyingActor();
 951
 952         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
 953     }
 954
 955     @Test
 956     public void testWhenShardIsLeaderSyncStatusIsTrue() throws Exception{
 957         final TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 958
 959         ShardManager shardManagerActor = shardManager.underlyingActor();
 960         shardManagerActor.onReceiveCommand(new RoleChangeNotification("member-1-shard-default-" + shardMrgIDSuffix,
 961                 RaftState.Follower.name(), RaftState.Leader.name()));
 962
 963         assertEquals(true, shardManagerActor.getMBean().getSyncStatus());
 964     }
 965
 966     @Test
 967     public void testWhenShardIsCandidateSyncStatusIsFalse() throws Exception{
 968         final TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 969
 970         ShardManager shardManagerActor = shardManager.underlyingActor();
 971         String shardId = "member-1-shard-default-" + shardMrgIDSuffix;
 972         shardManagerActor.onReceiveCommand(new RoleChangeNotification(shardId,
 973                 RaftState.Follower.name(), RaftState.Candidate.name()));
 974
 975         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
 976
 977         // Send a FollowerInitialSyncStatus with status = true for the replica whose current state is candidate
 978         shardManagerActor.onReceiveCommand(new FollowerInitialSyncUpStatus(
 979                 true, shardId));
 980
 981         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
 982     }
 983
 984     @Test
 985     public void testWhenShardIsFollowerSyncStatusDependsOnFollowerInitialSyncStatus() throws Exception{
 986         final Props persistentProps = newShardMgrProps();
 987         final TestActorRef<ShardManager> shardManager =
 988                 TestActorRef.create(getSystem(), persistentProps);
 989
 990         String shardId = "member-1-shard-default-" + shardMrgIDSuffix;
 991         ShardManager shardManagerActor = shardManager.underlyingActor();
 992         shardManagerActor.onReceiveCommand(new RoleChangeNotification(shardId,
 993                 RaftState.Candidate.name(), RaftState.Follower.name()));
 994
 995         // Initially will be false
 996         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
 997
 998         // Send status true will make sync status true
 999         shardManagerActor.onReceiveCommand(new FollowerInitialSyncUpStatus(true, shardId));
1000
1001         assertEquals(true, shardManagerActor.getMBean().getSyncStatus());
1002
1003         // Send status false will make sync status false
1004         shardManagerActor.onReceiveCommand(new FollowerInitialSyncUpStatus(false, shardId));
1005
1006         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
1007
1008     }
1009
1010     @Test
1011     public void testWhenMultipleShardsPresentSyncStatusMustBeTrueForAllShards() throws Exception{
1012         final Props persistentProps = newShardMgrProps(new MockConfiguration() {
1013             @Override
1014             public List<String> getMemberShardNames(String memberName) {
1015                 return Arrays.asList("default", "astronauts");
1016             }
1017         });
1018
1019         final TestActorRef<ShardManager> shardManager =
1020                 TestActorRef.create(getSystem(), persistentProps);
1021
1022         ShardManager shardManagerActor = shardManager.underlyingActor();
1023
1024         // Initially will be false
1025         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
1026
1027         // Make default shard leader
1028         String defaultShardId = "member-1-shard-default-" + shardMrgIDSuffix;
1029         shardManagerActor.onReceiveCommand(new RoleChangeNotification(defaultShardId,
1030                 RaftState.Follower.name(), RaftState.Leader.name()));
1031
1032         // default = Leader, astronauts is unknown so sync status remains false
1033         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
1034
1035         // Make astronauts shard leader as well
1036         String astronautsShardId = "member-1-shard-astronauts-" + shardMrgIDSuffix;
1037         shardManagerActor.onReceiveCommand(new RoleChangeNotification(astronautsShardId,
1038                 RaftState.Follower.name(), RaftState.Leader.name()));
1039
1040         // Now sync status should be true
1041         assertEquals(true, shardManagerActor.getMBean().getSyncStatus());
1042
1043         // Make astronauts a Follower
1044         shardManagerActor.onReceiveCommand(new RoleChangeNotification(astronautsShardId,
1045                 RaftState.Leader.name(), RaftState.Follower.name()));
1046
1047         // Sync status is not true
1048         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
1049
1050         // Make the astronauts follower sync status true
1051         shardManagerActor.onReceiveCommand(new FollowerInitialSyncUpStatus(true, astronautsShardId));
1052
1053         // Sync status is now true
1054         assertEquals(true, shardManagerActor.getMBean().getSyncStatus());
1055
1056     }
1057
1058     @Test
1059     public void testOnReceiveSwitchShardBehavior() throws Exception {
1060         new JavaTestKit(getSystem()) {{
1061             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
1062
1063             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
1064             shardManager.tell(new ActorInitialized(), mockShardActor);
1065
1066             shardManager.tell(new SwitchShardBehavior(mockShardName, "Leader", 1000), getRef());
1067
1068             SwitchBehavior switchBehavior = MessageCollectorActor.expectFirstMatching(mockShardActor, SwitchBehavior.class);
1069
1070             assertEquals(RaftState.Leader, switchBehavior.getNewState());
1071             assertEquals(1000, switchBehavior.getNewTerm());
1072         }};
1073     }
1074
1075     @Test
1076     public void testOnReceiveCreateShard() {
1077         new JavaTestKit(getSystem()) {{
1078             datastoreContextBuilder.shardInitializationTimeout(1, TimeUnit.MINUTES).persistent(true);
1079
1080             ActorRef shardManager = getSystem().actorOf(newShardMgrProps(
1081                     new ConfigurationImpl(new EmptyModuleShardConfigProvider())));
1082
1083             SchemaContext schemaContext = TestModel.createTestContext();
1084             shardManager.tell(new UpdateSchemaContext(schemaContext), ActorRef.noSender());
1085
1086             DatastoreContext datastoreContext = DatastoreContext.newBuilder().shardElectionTimeoutFactor(100).
1087                     persistent(false).build();
1088             Shard.Builder shardBuilder = Shard.builder();
1089
1090             ModuleShardConfiguration config = new ModuleShardConfiguration(URI.create("foo-ns"), "foo-module",
1091                     "foo", null, Arrays.asList("member-1", "member-5", "member-6"));
1092             shardManager.tell(new CreateShard(config, shardBuilder, datastoreContext), getRef());
1093
1094             expectMsgClass(duration("5 seconds"), CreateShardReply.class);
1095
1096             shardManager.tell(new FindLocalShard("foo", true), getRef());
1097
1098             expectMsgClass(duration("5 seconds"), LocalShardFound.class);
1099
1100             assertEquals("isRecoveryApplicable", false, shardBuilder.getDatastoreContext().isPersistent());
1101             assertTrue("Epxected ShardPeerAddressResolver", shardBuilder.getDatastoreContext().getShardRaftConfig().
1102                     getPeerAddressResolver() instanceof ShardPeerAddressResolver);
1103             assertEquals("peerMembers", Sets.newHashSet(new ShardIdentifier("foo", "member-5", shardMrgIDSuffix).toString(),
1104                     new ShardIdentifier("foo", "member-6", shardMrgIDSuffix).toString()),
1105                     shardBuilder.getPeerAddresses().keySet());
1106             assertEquals("ShardIdentifier", new ShardIdentifier("foo", "member-1", shardMrgIDSuffix),
1107                     shardBuilder.getId());
1108             assertSame("schemaContext", schemaContext, shardBuilder.getSchemaContext());
1109
1110             // Send CreateShard with same name - should fail.
1111
1112             shardManager.tell(new CreateShard(config, shardBuilder, null), getRef());
1113
1114             expectMsgClass(duration("5 seconds"), akka.actor.Status.Failure.class);
1115         }};
1116     }
1117
1118     @Test
1119     public void testOnReceiveCreateShardWithNoInitialSchemaContext() {
1120         new JavaTestKit(getSystem()) {{
1121             ActorRef shardManager = getSystem().actorOf(newShardMgrProps(
1122                     new ConfigurationImpl(new EmptyModuleShardConfigProvider())));
1123
1124             Shard.Builder shardBuilder = Shard.builder();
1125
1126             ModuleShardConfiguration config = new ModuleShardConfiguration(URI.create("foo-ns"), "foo-module",
1127                     "foo", null, Arrays.asList("member-1"));
1128             shardManager.tell(new CreateShard(config, shardBuilder, null), getRef());
1129
1130             expectMsgClass(duration("5 seconds"), CreateShardReply.class);
1131
1132             SchemaContext schemaContext = TestModel.createTestContext();
1133             shardManager.tell(new UpdateSchemaContext(schemaContext), ActorRef.noSender());
1134
1135             shardManager.tell(new FindLocalShard("foo", true), getRef());
1136
1137             expectMsgClass(duration("5 seconds"), LocalShardFound.class);
1138
1139             assertSame("schemaContext", schemaContext, shardBuilder.getSchemaContext());
1140             assertNotNull("schemaContext is null", shardBuilder.getDatastoreContext());
1141         }};
1142     }
1143
1144     @Test
1145     public void testGetSnapshot() throws Throwable {
1146         JavaTestKit kit = new JavaTestKit(getSystem());
1147
1148         MockConfiguration mockConfig = new MockConfiguration(ImmutableMap.<String, List<String>>builder().
1149                    put("shard1", Arrays.asList("member-1")).
1150                    put("shard2", Arrays.asList("member-1")).build());
1151
1152         ActorRef shardManager = getSystem().actorOf(newShardMgrProps(mockConfig).withDispatcher(
1153                 Dispatchers.DefaultDispatcherId()));
1154
1155         shardManager.tell(GetSnapshot.INSTANCE, kit.getRef());
1156         Failure failure = kit.expectMsgClass(Failure.class);
1157         assertEquals("Failure cause type", IllegalStateException.class, failure.cause().getClass());
1158
1159         kit = new JavaTestKit(getSystem());
1160
1161         shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), ActorRef.noSender());
1162
1163         shardManager.tell(new FindLocalShard("shard1", true), kit.getRef());
1164         kit.expectMsgClass(LocalShardFound.class);
1165         shardManager.tell(new FindLocalShard("shard2", true), kit.getRef());
1166         kit.expectMsgClass(LocalShardFound.class);
1167
1168         shardManager.tell(GetSnapshot.INSTANCE, kit.getRef());
1169
1170         DatastoreSnapshot datastoreSnapshot = kit.expectMsgClass(DatastoreSnapshot.class);
1171
1172         assertEquals("getType", shardMrgIDSuffix, datastoreSnapshot.getType());
1173         List<ShardSnapshot> shardSnapshots = datastoreSnapshot.getShardSnapshots();
1174         Set<String> actualShardNames = new HashSet<>();
1175         for(ShardSnapshot s: shardSnapshots) {
1176             actualShardNames.add(s.getName());
1177         }
1178
1179         assertEquals("Shard names", Sets.newHashSet("shard1", "shard2"), actualShardNames);
1180
1181         shardManager.tell(PoisonPill.getInstance(), ActorRef.noSender());
1182     }
1183
1184     @Test
1185     public void testAddShardReplicaForNonExistentShard() throws Exception {
1186         new JavaTestKit(getSystem()) {{
1187             ActorRef shardManager = getSystem().actorOf(newShardMgrProps(
1188                     new ConfigurationImpl(new EmptyModuleShardConfigProvider())));
1189
1190             shardManager.tell(new AddShardReplica("model-inventory"), getRef());
1191             Status.Failure resp = expectMsgClass(duration("2 seconds"), Status.Failure.class);
1192
1193             assertEquals("Failure obtained", true,
1194                           (resp.cause() instanceof IllegalArgumentException));
1195         }};
1196     }
1197
1198     @Test
1199     public void testAddShardReplicaForAlreadyCreatedShard() throws Exception {
1200         new JavaTestKit(getSystem()) {{
1201             ActorRef shardManager = getSystem().actorOf(newShardMgrProps());
1202             shardManager.tell(new AddShardReplica("default"), getRef());
1203             Status.Failure resp = expectMsgClass(duration("2 seconds"), Status.Failure.class);
1204             assertEquals("Failure obtained", true,
1205                           (resp.cause() instanceof IllegalArgumentException));
1206         }};
1207     }
1208
1209     @Test
1210     public void testAddShardReplica() throws Exception {
1211         MockConfiguration mockConfig =
1212                 new MockConfiguration(ImmutableMap.<String, List<String>>builder().
1213                    put("default", Arrays.asList("member-1", "member-2")).
1214                    put("astronauts", Arrays.asList("member-2")).build());
1215
1216         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
1217
1218         // Create an ActorSystem ShardManager actor for member-1.
1219         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
1220         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
1221         ActorRef mockDefaultShardActor = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
1222         final TestActorRef<ForwardingShardManager> newReplicaShardManager = TestActorRef.create(system1,
1223                 newPropsShardMgrWithMockShardActor("shardManager1", mockDefaultShardActor,
1224                    new ClusterWrapperImpl(system1), mockConfig), shardManagerID);
1225
1226         // Create an ActorSystem ShardManager actor for member-2.
1227         final ActorSystem system2 = ActorSystem.create("cluster-test",
1228             ConfigFactory.load().getConfig("Member2"));
1229         Cluster.get(system2).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
1230
1231         String name = new ShardIdentifier("astronauts", "member-2", "config").toString();
1232         final TestActorRef<MockRespondActor> mockShardLeaderActor =
1233             TestActorRef.create(system2, Props.create(MockRespondActor.class), name);
1234         final TestActorRef<ForwardingShardManager> leaderShardManager = TestActorRef.create(system2,
1235                 newPropsShardMgrWithMockShardActor("shardManager2", mockShardLeaderActor,
1236                         new ClusterWrapperImpl(system2), mockConfig), shardManagerID);
1237
1238         new JavaTestKit(system1) {{
1239
1240             newReplicaShardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
1241             leaderShardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
1242
1243             leaderShardManager.tell(new ActorInitialized(), mockShardLeaderActor);
1244
1245             String memberId2 = "member-2-shard-astronauts-" + shardMrgIDSuffix;
1246             short leaderVersion = DataStoreVersions.CURRENT_VERSION - 1;
1247             leaderShardManager.tell(new ShardLeaderStateChanged(memberId2, memberId2,
1248                     Optional.of(mock(DataTree.class)), leaderVersion), mockShardLeaderActor);
1249             leaderShardManager.tell(new RoleChangeNotification(memberId2,
1250                     RaftState.Candidate.name(), RaftState.Leader.name()), mockShardLeaderActor);
1251
1252             newReplicaShardManager.underlyingActor().waitForMemberUp();
1253             leaderShardManager.underlyingActor().waitForMemberUp();
1254
1255             //construct a mock response message
1256             AddServerReply response = new AddServerReply(ServerChangeStatus.OK, memberId2);
1257             mockShardLeaderActor.underlyingActor().updateResponse(response);
1258             newReplicaShardManager.tell(new AddShardReplica("astronauts"), getRef());
1259             AddServer addServerMsg = MessageCollectorActor.expectFirstMatching(mockShardLeaderActor,
1260                 AddServer.class);
1261             String addServerId = "member-1-shard-astronauts-" + shardMrgIDSuffix;
1262             assertEquals("AddServer serverId", addServerId, addServerMsg.getNewServerId());
1263
1264             expectMsgClass(duration("5 seconds"), Status.Success.class);
1265         }};
1266
1267         JavaTestKit.shutdownActorSystem(system1);
1268         JavaTestKit.shutdownActorSystem(system2);
1269     }
1270
1271     @Test
1272     public void testAddShardReplicaWithFindPrimaryTimeout() throws Exception {
1273         MockConfiguration mockConfig =
1274                 new MockConfiguration(ImmutableMap.<String, List<String>>builder().
1275                    put("default", Arrays.asList("member-1", "member-2")).
1276                    put("astronauts", Arrays.asList("member-2")).build());
1277
1278         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
1279
1280         // Create an ActorSystem ShardManager actor for member-1.
1281         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
1282         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
1283         ActorRef mockDefaultShardActor = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
1284         final TestActorRef<ForwardingShardManager> newReplicaShardManager = TestActorRef.create(system1,
1285                 newPropsShardMgrWithMockShardActor("shardManager1", mockDefaultShardActor,
1286                    new ClusterWrapperImpl(system1), mockConfig), shardManagerID);
1287
1288         new JavaTestKit(system1) {{
1289
1290             newReplicaShardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
1291             MockClusterWrapper.sendMemberUp(newReplicaShardManager, "member-2", getRef().path().toString());
1292             newReplicaShardManager.underlyingActor().waitForMemberUp();
1293
1294             newReplicaShardManager.tell(new AddShardReplica("astronauts"), getRef());
1295             Status.Failure resp = expectMsgClass(duration("5 seconds"), Status.Failure.class);
1296             assertEquals("Failure obtained", true,
1297                           (resp.cause() instanceof RuntimeException));
1298         }};
1299
1300         JavaTestKit.shutdownActorSystem(system1);
1301     }
1302
1303     @Test
1304     public void testRemoveShardReplicaForNonExistentShard() throws Exception {
1305         new JavaTestKit(getSystem()) {{
1306             ActorRef shardManager = getSystem().actorOf(newShardMgrProps(
1307                     new ConfigurationImpl(new EmptyModuleShardConfigProvider())));
1308
1309             shardManager.tell(new RemoveShardReplica("model-inventory"), getRef());
1310             Status.Failure resp = expectMsgClass(duration("2 seconds"), Status.Failure.class);
1311             assertEquals("Failure obtained", true,
1312                          (resp.cause() instanceof IllegalArgumentException));
1313         }};
1314
1315     }
1316
1317     private static class TestShardManager extends ShardManager {
1318         private final CountDownLatch recoveryComplete = new CountDownLatch(1);
1319
1320         TestShardManager(String shardMrgIDSuffix) {
1321             super(ShardManager.builder().cluster(new MockClusterWrapper()).configuration(new MockConfiguration()).
1322                     datastoreContextFactory(newDatastoreContextFactory(DatastoreContext.newBuilder().dataStoreType(shardMrgIDSuffix).build())).
1323                     waitTillReadyCountdownLatch(ready).primaryShardInfoCache(new PrimaryShardInfoFutureCache()));
1324         }
1325
1326         @Override
1327         public void handleRecover(Object message) throws Exception {
1328             try {
1329                 super.handleRecover(message);
1330             } finally {
1331                 if(message instanceof RecoveryCompleted) {
1332                     recoveryComplete.countDown();
1333                 }
1334             }
1335         }
1336
1337         void waitForRecoveryComplete() {
1338             assertEquals("Recovery complete", true,
1339                     Uninterruptibles.awaitUninterruptibly(recoveryComplete, 5, TimeUnit.SECONDS));
1340         }
1341     }
1342
1343     @SuppressWarnings("serial")
1344     static class TestShardManagerCreator implements Creator<TestShardManager> {
1345         String shardMrgIDSuffix;
1346
1347         TestShardManagerCreator(String shardMrgIDSuffix) {
1348             this.shardMrgIDSuffix = shardMrgIDSuffix;
1349         }
1350
1351         @Override
1352         public TestShardManager create() throws Exception {
1353             return new TestShardManager(shardMrgIDSuffix);
1354         }
1355
1356     }
1357
1358     private static class DelegatingShardManagerCreator implements Creator<ShardManager> {
1359         private static final long serialVersionUID = 1L;
1360         private final Creator<ShardManager> delegate;
1361
1362         public DelegatingShardManagerCreator(Creator<ShardManager> delegate) {
1363             this.delegate = delegate;
1364         }
1365
1366         @Override
1367         public ShardManager create() throws Exception {
1368             return delegate.create();
1369         }
1370     }
1371
1372     private static class ForwardingShardManager extends ShardManager {
1373         private CountDownLatch findPrimaryMessageReceived = new CountDownLatch(1);
1374         private CountDownLatch memberUpReceived = new CountDownLatch(1);
1375         private CountDownLatch memberRemovedReceived = new CountDownLatch(1);
1376         private CountDownLatch memberUnreachableReceived = new CountDownLatch(1);
1377         private CountDownLatch memberReachableReceived = new CountDownLatch(1);
1378         private final ActorRef shardActor;
1379         private final String name;
1380
1381         public ForwardingShardManager(Builder builder, String name, ActorRef shardActor) {
1382             super(builder);
1383             this.shardActor = shardActor;
1384             this.name = name;
1385         }
1386
1387         @Override
1388         public void handleCommand(Object message) throws Exception {
1389             try{
1390                 super.handleCommand(message);
1391             } finally {
1392                 if(message instanceof FindPrimary) {
1393                     findPrimaryMessageReceived.countDown();
1394                 } else if(message instanceof ClusterEvent.MemberUp) {
1395                     String role = ((ClusterEvent.MemberUp)message).member().roles().head();
1396                     if(!getCluster().getCurrentMemberName().equals(role)) {
1397                         memberUpReceived.countDown();
1398                     }
1399                 } else if(message instanceof ClusterEvent.MemberRemoved) {
1400                     String role = ((ClusterEvent.MemberRemoved)message).member().roles().head();
1401                     if(!getCluster().getCurrentMemberName().equals(role)) {
1402                         memberRemovedReceived.countDown();
1403                     }
1404                 } else if(message instanceof ClusterEvent.UnreachableMember) {
1405                     String role = ((ClusterEvent.UnreachableMember)message).member().roles().head();
1406                     if(!getCluster().getCurrentMemberName().equals(role)) {
1407                         memberUnreachableReceived.countDown();
1408                     }
1409                 } else if(message instanceof ClusterEvent.ReachableMember) {
1410                     String role = ((ClusterEvent.ReachableMember)message).member().roles().head();
1411                     if(!getCluster().getCurrentMemberName().equals(role)) {
1412                         memberReachableReceived.countDown();
1413                     }
1414                 }
1415             }
1416         }
1417
1418         @Override
1419         public String persistenceId() {
1420             return name;
1421         }
1422
1423         @Override
1424         protected ActorRef newShardActor(SchemaContext schemaContext, ShardInformation info) {
1425             return shardActor;
1426         }
1427
1428         void waitForMemberUp() {
1429             assertEquals("MemberUp received", true,
1430                     Uninterruptibles.awaitUninterruptibly(memberUpReceived, 5, TimeUnit.SECONDS));
1431             memberUpReceived = new CountDownLatch(1);
1432         }
1433
1434         void waitForMemberRemoved() {
1435             assertEquals("MemberRemoved received", true,
1436                     Uninterruptibles.awaitUninterruptibly(memberRemovedReceived, 5, TimeUnit.SECONDS));
1437             memberRemovedReceived = new CountDownLatch(1);
1438         }
1439
1440         void waitForUnreachableMember() {
1441             assertEquals("UnreachableMember received", true,
1442                 Uninterruptibles.awaitUninterruptibly(memberUnreachableReceived, 5, TimeUnit.SECONDS
1443                 ));
1444             memberUnreachableReceived = new CountDownLatch(1);
1445         }
1446
1447         void waitForReachableMember() {
1448             assertEquals("ReachableMember received", true,
1449                 Uninterruptibles.awaitUninterruptibly(memberReachableReceived, 5, TimeUnit.SECONDS));
1450             memberReachableReceived = new CountDownLatch(1);
1451         }
1452
1453         void verifyFindPrimary() {
1454             assertEquals("FindPrimary received", true,
1455                     Uninterruptibles.awaitUninterruptibly(findPrimaryMessageReceived, 5, TimeUnit.SECONDS));
1456             findPrimaryMessageReceived = new CountDownLatch(1);
1457         }
1458     }
1459
1460     private static class MockRespondActor extends MessageCollectorActor {
1461
1462         private volatile Object responseMsg;
1463
1464         public void updateResponse(Object response) {
1465             responseMsg = response;
1466         }
1467
1468         @Override
1469         public void onReceive(Object message) throws Exception {
1470             super.onReceive(message);
1471             if (message instanceof AddServer) {
1472                 if (responseMsg != null) {
1473                     getSender().tell(responseMsg, getSelf());
1474                     responseMsg = null;
1475                 }
1476             }
1477         }
1478     }
1479 }