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.props(new MockClusterWrapper(), config,
 167                 newDatastoreContextFactory(datastoreContextBuilder.build()), ready, primaryShardInfoCache);
 168     }
 169
 170     private Props newPropsShardMgrWithMockShardActor() {
 171         return newPropsShardMgrWithMockShardActor("shardManager", mockShardActor, new MockClusterWrapper(),
 172                 new MockConfiguration());
 173     }
 174
 175     private Props newPropsShardMgrWithMockShardActor(final String name, final ActorRef shardActor,
 176             final ClusterWrapper clusterWrapper, final Configuration config) {
 177         Creator<ShardManager> creator = new Creator<ShardManager>() {
 178             private static final long serialVersionUID = 1L;
 179             @Override
 180             public ShardManager create() throws Exception {
 181                 return new ForwardingShardManager(clusterWrapper, config, newDatastoreContextFactory(
 182                         datastoreContextBuilder.build()), ready, name, shardActor, primaryShardInfoCache);
 183             }
 184         };
 185
 186         return Props.create(new DelegatingShardManagerCreator(creator)).withDispatcher(Dispatchers.DefaultDispatcherId());
 187     }
 188
 189     @Test
 190     public void testPerShardDatastoreContext() throws Exception {
 191         final DatastoreContextFactory mockFactory = newDatastoreContextFactory(
 192                 datastoreContextBuilder.shardElectionTimeoutFactor(5).build());
 193
 194         Mockito.doReturn(DatastoreContext.newBuilderFrom(datastoreContextBuilder.build()).
 195                 shardElectionTimeoutFactor(6).build()).when(mockFactory).getShardDatastoreContext("default");
 196
 197         Mockito.doReturn(DatastoreContext.newBuilderFrom(datastoreContextBuilder.build()).
 198                 shardElectionTimeoutFactor(7).build()).when(mockFactory).getShardDatastoreContext("topology");
 199
 200         final MockConfiguration mockConfig = new MockConfiguration() {
 201             @Override
 202             public Collection<String> getMemberShardNames(String memberName) {
 203                 return Arrays.asList("default", "topology");
 204             }
 205
 206             @Override
 207             public Collection<String> getMembersFromShardName(String shardName) {
 208                 return Arrays.asList("member-1");
 209             }
 210         };
 211
 212         final TestActorRef<MessageCollectorActor> defaultShardActor = TestActorRef.create(getSystem(),
 213                 Props.create(MessageCollectorActor.class), "default");
 214         final TestActorRef<MessageCollectorActor> topologyShardActor = TestActorRef.create(getSystem(),
 215                 Props.create(MessageCollectorActor.class), "topology");
 216
 217         final Map<String, Entry<ActorRef, DatastoreContext>> shardInfoMap = Collections.synchronizedMap(
 218                 new HashMap<String, Entry<ActorRef, DatastoreContext>>());
 219         shardInfoMap.put("default", new AbstractMap.SimpleEntry<ActorRef, DatastoreContext>(defaultShardActor, null));
 220         shardInfoMap.put("topology", new AbstractMap.SimpleEntry<ActorRef, DatastoreContext>(topologyShardActor, null));
 221
 222         final CountDownLatch newShardActorLatch = new CountDownLatch(2);
 223         final Creator<ShardManager> creator = new Creator<ShardManager>() {
 224             private static final long serialVersionUID = 1L;
 225             @Override
 226             public ShardManager create() throws Exception {
 227                 return new ShardManager(new MockClusterWrapper(), mockConfig, mockFactory, ready, primaryShardInfoCache) {
 228                     @Override
 229                     protected ActorRef newShardActor(SchemaContext schemaContext, ShardInformation info) {
 230                         Entry<ActorRef, DatastoreContext> entry = shardInfoMap.get(info.getShardName());
 231                         ActorRef ref = null;
 232                         if(entry != null) {
 233                             ref = entry.getKey();
 234                             entry.setValue(info.getDatastoreContext());
 235                         }
 236
 237                         newShardActorLatch.countDown();
 238                         return ref;
 239                     }
 240                 };
 241             }
 242         };
 243
 244         JavaTestKit kit = new JavaTestKit(getSystem());
 245
 246         final ActorRef shardManager = getSystem().actorOf(Props.create(new DelegatingShardManagerCreator(creator)).
 247                     withDispatcher(Dispatchers.DefaultDispatcherId()));
 248
 249         shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), kit.getRef());
 250
 251         assertEquals("Shard actors created", true, newShardActorLatch.await(5, TimeUnit.SECONDS));
 252         assertEquals("getShardElectionTimeoutFactor", 6, shardInfoMap.get("default").getValue().
 253                 getShardElectionTimeoutFactor());
 254         assertEquals("getShardElectionTimeoutFactor", 7, shardInfoMap.get("topology").getValue().
 255                 getShardElectionTimeoutFactor());
 256
 257         DatastoreContextFactory newMockFactory = newDatastoreContextFactory(
 258                 datastoreContextBuilder.shardElectionTimeoutFactor(5).build());
 259         Mockito.doReturn(DatastoreContext.newBuilderFrom(datastoreContextBuilder.build()).
 260                 shardElectionTimeoutFactor(66).build()).when(newMockFactory).getShardDatastoreContext("default");
 261
 262         Mockito.doReturn(DatastoreContext.newBuilderFrom(datastoreContextBuilder.build()).
 263                 shardElectionTimeoutFactor(77).build()).when(newMockFactory).getShardDatastoreContext("topology");
 264
 265         shardManager.tell(newMockFactory, kit.getRef());
 266
 267         DatastoreContext newContext = MessageCollectorActor.expectFirstMatching(defaultShardActor, DatastoreContext.class);
 268         assertEquals("getShardElectionTimeoutFactor", 66, newContext.getShardElectionTimeoutFactor());
 269
 270         newContext = MessageCollectorActor.expectFirstMatching(topologyShardActor, DatastoreContext.class);
 271         assertEquals("getShardElectionTimeoutFactor", 77, newContext.getShardElectionTimeoutFactor());
 272
 273         defaultShardActor.tell(PoisonPill.getInstance(), ActorRef.noSender());
 274         topologyShardActor.tell(PoisonPill.getInstance(), ActorRef.noSender());
 275     }
 276
 277     @Test
 278     public void testOnReceiveFindPrimaryForNonExistentShard() throws Exception {
 279         new JavaTestKit(getSystem()) {{
 280             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 281
 282             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 283
 284             shardManager.tell(new FindPrimary("non-existent", false), getRef());
 285
 286             expectMsgClass(duration("5 seconds"), PrimaryNotFoundException.class);
 287         }};
 288     }
 289
 290     @Test
 291     public void testOnReceiveFindPrimaryForLocalLeaderShard() throws Exception {
 292         new JavaTestKit(getSystem()) {{
 293             String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 294
 295             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 296
 297             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 298             shardManager.tell(new ActorInitialized(), mockShardActor);
 299
 300             DataTree mockDataTree = mock(DataTree.class);
 301             shardManager.tell(new ShardLeaderStateChanged(memberId, memberId, Optional.of(mockDataTree),
 302                     DataStoreVersions.CURRENT_VERSION), getRef());
 303
 304             MessageCollectorActor.expectFirstMatching(mockShardActor, RegisterRoleChangeListener.class);
 305             shardManager.tell((new RoleChangeNotification(memberId, RaftState.Candidate.name(),
 306                     RaftState.Leader.name())), mockShardActor);
 307
 308             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 309
 310             LocalPrimaryShardFound primaryFound = expectMsgClass(duration("5 seconds"), LocalPrimaryShardFound.class);
 311             assertTrue("Unexpected primary path " +  primaryFound.getPrimaryPath(),
 312                     primaryFound.getPrimaryPath().contains("member-1-shard-default"));
 313             assertSame("getLocalShardDataTree", mockDataTree, primaryFound.getLocalShardDataTree() );
 314         }};
 315     }
 316
 317     @Test
 318     public void testOnReceiveFindPrimaryForNonLocalLeaderShardBeforeMemberUp() throws Exception {
 319         new JavaTestKit(getSystem()) {{
 320             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 321
 322             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 323             shardManager.tell(new ActorInitialized(), mockShardActor);
 324
 325             String memberId2 = "member-2-shard-default-" + shardMrgIDSuffix;
 326             String memberId1 = "member-1-shard-default-" + shardMrgIDSuffix;
 327             shardManager.tell(new RoleChangeNotification(memberId1,
 328                     RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor);
 329             shardManager.tell(new LeaderStateChanged(memberId1, memberId2, DataStoreVersions.CURRENT_VERSION), mockShardActor);
 330
 331             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 332
 333             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 334         }};
 335     }
 336
 337     @Test
 338     public void testOnReceiveFindPrimaryForNonLocalLeaderShard() throws Exception {
 339         new JavaTestKit(getSystem()) {{
 340             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 341
 342             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 343             shardManager.tell(new ActorInitialized(), mockShardActor);
 344
 345             String memberId2 = "member-2-shard-default-" + shardMrgIDSuffix;
 346             MockClusterWrapper.sendMemberUp(shardManager, "member-2", getRef().path().toString());
 347
 348             String memberId1 = "member-1-shard-default-" + shardMrgIDSuffix;
 349             shardManager.tell(new RoleChangeNotification(memberId1,
 350                     RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor);
 351             short leaderVersion = DataStoreVersions.CURRENT_VERSION - 1;
 352             shardManager.tell(new ShardLeaderStateChanged(memberId1, memberId2, Optional.<DataTree>absent(),
 353                     leaderVersion), mockShardActor);
 354
 355             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 356
 357             RemotePrimaryShardFound primaryFound = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 358             assertTrue("Unexpected primary path " +  primaryFound.getPrimaryPath(),
 359                     primaryFound.getPrimaryPath().contains("member-2-shard-default"));
 360             assertEquals("getPrimaryVersion", leaderVersion, primaryFound.getPrimaryVersion());
 361         }};
 362     }
 363
 364     @Test
 365     public void testOnReceiveFindPrimaryForUninitializedShard() throws Exception {
 366         new JavaTestKit(getSystem()) {{
 367             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 368
 369             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 370
 371             expectMsgClass(duration("5 seconds"), NotInitializedException.class);
 372         }};
 373     }
 374
 375     @Test
 376     public void testOnReceiveFindPrimaryForInitializedShardWithNoRole() throws Exception {
 377         new JavaTestKit(getSystem()) {{
 378             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 379
 380             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 381             shardManager.tell(new ActorInitialized(), mockShardActor);
 382
 383             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 384
 385             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 386         }};
 387     }
 388
 389     @Test
 390     public void testOnReceiveFindPrimaryForFollowerShardWithNoInitialLeaderId() throws Exception {
 391         new JavaTestKit(getSystem()) {{
 392             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 393
 394             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 395             shardManager.tell(new ActorInitialized(), mockShardActor);
 396
 397             String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 398             shardManager.tell(new RoleChangeNotification(memberId,
 399                     RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor);
 400
 401             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 402
 403             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 404
 405             DataTree mockDataTree = mock(DataTree.class);
 406             shardManager.tell(new ShardLeaderStateChanged(memberId, memberId, Optional.of(mockDataTree),
 407                     DataStoreVersions.CURRENT_VERSION), mockShardActor);
 408
 409             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, false), getRef());
 410
 411             LocalPrimaryShardFound primaryFound = expectMsgClass(duration("5 seconds"), LocalPrimaryShardFound.class);
 412             assertTrue("Unexpected primary path " +  primaryFound.getPrimaryPath(),
 413                     primaryFound.getPrimaryPath().contains("member-1-shard-default"));
 414             assertSame("getLocalShardDataTree", mockDataTree, primaryFound.getLocalShardDataTree() );
 415         }};
 416     }
 417
 418     @Test
 419     public void testOnReceiveFindPrimaryWaitForShardLeader() throws Exception {
 420         new JavaTestKit(getSystem()) {{
 421             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 422
 423             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 424
 425             // We're passing waitUntilInitialized = true to FindPrimary so the response should be
 426             // delayed until we send ActorInitialized and RoleChangeNotification.
 427             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 428
 429             expectNoMsg(FiniteDuration.create(150, TimeUnit.MILLISECONDS));
 430
 431             shardManager.tell(new ActorInitialized(), mockShardActor);
 432
 433             expectNoMsg(FiniteDuration.create(150, TimeUnit.MILLISECONDS));
 434
 435             String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 436             shardManager.tell(new RoleChangeNotification(memberId,
 437                     RaftState.Candidate.name(), RaftState.Leader.name()), mockShardActor);
 438
 439             expectNoMsg(FiniteDuration.create(150, TimeUnit.MILLISECONDS));
 440
 441             DataTree mockDataTree = mock(DataTree.class);
 442             shardManager.tell(new ShardLeaderStateChanged(memberId, memberId, Optional.of(mockDataTree),
 443                     DataStoreVersions.CURRENT_VERSION), mockShardActor);
 444
 445             LocalPrimaryShardFound primaryFound = expectMsgClass(duration("5 seconds"), LocalPrimaryShardFound.class);
 446             assertTrue("Unexpected primary path " +  primaryFound.getPrimaryPath(),
 447                     primaryFound.getPrimaryPath().contains("member-1-shard-default"));
 448             assertSame("getLocalShardDataTree", mockDataTree, primaryFound.getLocalShardDataTree() );
 449
 450             expectNoMsg(FiniteDuration.create(200, TimeUnit.MILLISECONDS));
 451         }};
 452     }
 453
 454     @Test
 455     public void testOnReceiveFindPrimaryWaitForReadyWithUninitializedShard() throws Exception {
 456         new JavaTestKit(getSystem()) {{
 457             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 458
 459             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 460
 461             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 462
 463             expectMsgClass(duration("2 seconds"), NotInitializedException.class);
 464
 465             shardManager.tell(new ActorInitialized(), mockShardActor);
 466
 467             expectNoMsg(FiniteDuration.create(200, TimeUnit.MILLISECONDS));
 468         }};
 469     }
 470
 471     @Test
 472     public void testOnReceiveFindPrimaryWaitForReadyWithCandidateShard() throws Exception {
 473         new JavaTestKit(getSystem()) {{
 474             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 475
 476             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 477             shardManager.tell(new ActorInitialized(), mockShardActor);
 478             shardManager.tell(new RoleChangeNotification("member-1-shard-default-" + shardMrgIDSuffix,
 479                     null, RaftState.Candidate.name()), mockShardActor);
 480
 481             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 482
 483             expectMsgClass(duration("2 seconds"), NoShardLeaderException.class);
 484         }};
 485     }
 486
 487     @Test
 488     public void testOnReceiveFindPrimaryWaitForReadyWithIsolatedLeaderShard() throws Exception {
 489         new JavaTestKit(getSystem()) {{
 490             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 491
 492             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 493             shardManager.tell(new ActorInitialized(), mockShardActor);
 494             shardManager.tell(new RoleChangeNotification("member-1-shard-default-" + shardMrgIDSuffix,
 495                     null, RaftState.IsolatedLeader.name()), mockShardActor);
 496
 497             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 498
 499             expectMsgClass(duration("2 seconds"), NoShardLeaderException.class);
 500         }};
 501     }
 502
 503     @Test
 504     public void testOnReceiveFindPrimaryWaitForReadyWithNoRoleShard() throws Exception {
 505         new JavaTestKit(getSystem()) {{
 506             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 507
 508             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 509             shardManager.tell(new ActorInitialized(), mockShardActor);
 510
 511             shardManager.tell(new FindPrimary(Shard.DEFAULT_NAME, true), getRef());
 512
 513             expectMsgClass(duration("2 seconds"), NoShardLeaderException.class);
 514         }};
 515     }
 516
 517     @Test
 518     public void testOnReceiveFindPrimaryForRemoteShard() throws Exception {
 519         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
 520
 521         // Create an ActorSystem ShardManager actor for member-1.
 522
 523         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
 524         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 525
 526         ActorRef mockShardActor1 = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
 527
 528         final TestActorRef<ForwardingShardManager> shardManager1 = TestActorRef.create(system1,
 529                 newPropsShardMgrWithMockShardActor("shardManager1", mockShardActor1, new ClusterWrapperImpl(system1),
 530                         new MockConfiguration()), shardManagerID);
 531
 532         // Create an ActorSystem ShardManager actor for member-2.
 533
 534         final ActorSystem system2 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member2"));
 535
 536         Cluster.get(system2).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 537
 538         final ActorRef mockShardActor2 = newMockShardActor(system2, "astronauts", "member-2");
 539
 540         MockConfiguration mockConfig2 = new MockConfiguration(ImmutableMap.<String, List<String>>builder().
 541                 put("default", Arrays.asList("member-1", "member-2")).
 542                 put("astronauts", Arrays.asList("member-2")).build());
 543
 544         final TestActorRef<ForwardingShardManager> shardManager2 = TestActorRef.create(system2,
 545                 newPropsShardMgrWithMockShardActor("shardManager2", mockShardActor2, new ClusterWrapperImpl(system2),
 546                         mockConfig2), shardManagerID);
 547
 548         new JavaTestKit(system1) {{
 549
 550             shardManager1.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 551             shardManager2.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 552
 553             shardManager2.tell(new ActorInitialized(), mockShardActor2);
 554
 555             String memberId2 = "member-2-shard-astronauts-" + shardMrgIDSuffix;
 556             short leaderVersion = DataStoreVersions.CURRENT_VERSION - 1;
 557             shardManager2.tell(new ShardLeaderStateChanged(memberId2, memberId2,
 558                     Optional.of(mock(DataTree.class)), leaderVersion), mockShardActor2);
 559             shardManager2.tell(new RoleChangeNotification(memberId2,
 560                     RaftState.Candidate.name(), RaftState.Leader.name()), mockShardActor2);
 561
 562             shardManager1.underlyingActor().waitForMemberUp();
 563
 564             shardManager1.tell(new FindPrimary("astronauts", false), getRef());
 565
 566             RemotePrimaryShardFound found = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 567             String path = found.getPrimaryPath();
 568             assertTrue("Unexpected primary path " + path, path.contains("member-2-shard-astronauts-config"));
 569             assertEquals("getPrimaryVersion", leaderVersion, found.getPrimaryVersion());
 570
 571             shardManager2.underlyingActor().verifyFindPrimary();
 572
 573             Cluster.get(system2).down(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 574
 575             shardManager1.underlyingActor().waitForMemberRemoved();
 576
 577             shardManager1.tell(new FindPrimary("astronauts", false), getRef());
 578
 579             expectMsgClass(duration("5 seconds"), PrimaryNotFoundException.class);
 580         }};
 581
 582         JavaTestKit.shutdownActorSystem(system1);
 583         JavaTestKit.shutdownActorSystem(system2);
 584     }
 585
 586     @Test
 587     public void testShardAvailabilityOnChangeOfMemberReachability() throws Exception {
 588         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
 589
 590         // Create an ActorSystem ShardManager actor for member-1.
 591
 592         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
 593         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 594
 595         final ActorRef mockShardActor1 = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
 596
 597         final TestActorRef<ForwardingShardManager> shardManager1 = TestActorRef.create(system1,
 598             newPropsShardMgrWithMockShardActor("shardManager1", mockShardActor1, new ClusterWrapperImpl(system1),
 599                 new MockConfiguration()), shardManagerID);
 600
 601         // Create an ActorSystem ShardManager actor for member-2.
 602
 603         final ActorSystem system2 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member2"));
 604
 605         Cluster.get(system2).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 606
 607         final ActorRef mockShardActor2 = newMockShardActor(system2, Shard.DEFAULT_NAME, "member-2");
 608
 609         MockConfiguration mockConfig2 = new MockConfiguration(ImmutableMap.<String, List<String>>builder().
 610             put("default", Arrays.asList("member-1", "member-2")).build());
 611
 612         final TestActorRef<ForwardingShardManager> shardManager2 = TestActorRef.create(system2,
 613             newPropsShardMgrWithMockShardActor("shardManager2", mockShardActor2, new ClusterWrapperImpl(system2),
 614                 mockConfig2), shardManagerID);
 615
 616         new JavaTestKit(system1) {{
 617
 618             shardManager1.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 619             shardManager2.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 620             shardManager1.tell(new ActorInitialized(), mockShardActor1);
 621             shardManager2.tell(new ActorInitialized(), mockShardActor2);
 622
 623             String memberId2 = "member-2-shard-default-" + shardMrgIDSuffix;
 624             String memberId1 = "member-1-shard-default-" + shardMrgIDSuffix;
 625             shardManager1.tell(new ShardLeaderStateChanged(memberId1, memberId2,
 626                 Optional.of(mock(DataTree.class)), DataStoreVersions.CURRENT_VERSION), mockShardActor1);
 627             shardManager1.tell(new RoleChangeNotification(memberId1,
 628                 RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor1);
 629             shardManager2.tell(new ShardLeaderStateChanged(memberId2, memberId2, Optional.of(mock(DataTree.class)),
 630                     DataStoreVersions.CURRENT_VERSION),
 631                 mockShardActor2);
 632             shardManager2.tell(new RoleChangeNotification(memberId2,
 633                 RaftState.Candidate.name(), RaftState.Leader.name()), mockShardActor2);
 634             shardManager1.underlyingActor().waitForMemberUp();
 635
 636             shardManager1.tell(new FindPrimary("default", true), getRef());
 637
 638             RemotePrimaryShardFound found = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 639             String path = found.getPrimaryPath();
 640             assertTrue("Unexpected primary path " + path, path.contains("member-2-shard-default-config"));
 641
 642             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 643                 createUnreachableMember("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 644
 645             shardManager1.underlyingActor().waitForUnreachableMember();
 646
 647             PeerDown peerDown = MessageCollectorActor.expectFirstMatching(mockShardActor1, PeerDown.class);
 648             assertEquals("getMemberName", "member-2", peerDown.getMemberName());
 649             MessageCollectorActor.clearMessages(mockShardActor1);
 650
 651             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 652                     createMemberRemoved("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 653
 654             MessageCollectorActor.expectFirstMatching(mockShardActor1, PeerDown.class);
 655
 656             shardManager1.tell(new FindPrimary("default", true), getRef());
 657
 658             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 659
 660             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 661                 createReachableMember("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 662
 663             shardManager1.underlyingActor().waitForReachableMember();
 664
 665             PeerUp peerUp = MessageCollectorActor.expectFirstMatching(mockShardActor1, PeerUp.class);
 666             assertEquals("getMemberName", "member-2", peerUp.getMemberName());
 667             MessageCollectorActor.clearMessages(mockShardActor1);
 668
 669             shardManager1.tell(new FindPrimary("default", true), getRef());
 670
 671             RemotePrimaryShardFound found1 = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 672             String path1 = found1.getPrimaryPath();
 673             assertTrue("Unexpected primary path " + path1, path1.contains("member-2-shard-default-config"));
 674
 675             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 676                     createMemberUp("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 677
 678             MessageCollectorActor.expectFirstMatching(mockShardActor1, PeerUp.class);
 679
 680         }};
 681
 682         JavaTestKit.shutdownActorSystem(system1);
 683         JavaTestKit.shutdownActorSystem(system2);
 684     }
 685
 686     @Test
 687     public void testShardAvailabilityChangeOnMemberUnreachableAndLeadershipChange() throws Exception {
 688         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
 689
 690         // Create an ActorSystem ShardManager actor for member-1.
 691
 692         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
 693         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 694
 695         final ActorRef mockShardActor1 = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
 696
 697         final TestActorRef<ForwardingShardManager> shardManager1 = TestActorRef.create(system1,
 698             newPropsShardMgrWithMockShardActor("shardManager1", mockShardActor1, new ClusterWrapperImpl(system1),
 699                 new MockConfiguration()), shardManagerID);
 700
 701         // Create an ActorSystem ShardManager actor for member-2.
 702
 703         final ActorSystem system2 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member2"));
 704
 705         Cluster.get(system2).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
 706
 707         final ActorRef mockShardActor2 = newMockShardActor(system2, Shard.DEFAULT_NAME, "member-2");
 708
 709         MockConfiguration mockConfig2 = new MockConfiguration(ImmutableMap.<String, List<String>>builder().
 710             put("default", Arrays.asList("member-1", "member-2")).build());
 711
 712         final TestActorRef<ForwardingShardManager> shardManager2 = TestActorRef.create(system2,
 713             newPropsShardMgrWithMockShardActor("shardManager2", mockShardActor2, new ClusterWrapperImpl(system2),
 714                 mockConfig2), shardManagerID);
 715
 716         new JavaTestKit(system1) {{
 717
 718             shardManager1.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 719             shardManager2.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 720             shardManager1.tell(new ActorInitialized(), mockShardActor1);
 721             shardManager2.tell(new ActorInitialized(), mockShardActor2);
 722
 723             String memberId2 = "member-2-shard-default-" + shardMrgIDSuffix;
 724             String memberId1 = "member-1-shard-default-" + shardMrgIDSuffix;
 725             shardManager1.tell(new ShardLeaderStateChanged(memberId1, memberId2,
 726                 Optional.of(mock(DataTree.class)), DataStoreVersions.CURRENT_VERSION), mockShardActor1);
 727             shardManager1.tell(new RoleChangeNotification(memberId1,
 728                 RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor1);
 729             shardManager2.tell(new ShardLeaderStateChanged(memberId2, memberId2, Optional.of(mock(DataTree.class)),
 730                     DataStoreVersions.CURRENT_VERSION),
 731                 mockShardActor2);
 732             shardManager2.tell(new RoleChangeNotification(memberId2,
 733                 RaftState.Candidate.name(), RaftState.Leader.name()), mockShardActor2);
 734             shardManager1.underlyingActor().waitForMemberUp();
 735
 736             shardManager1.tell(new FindPrimary("default", true), getRef());
 737
 738             RemotePrimaryShardFound found = expectMsgClass(duration("5 seconds"), RemotePrimaryShardFound.class);
 739             String path = found.getPrimaryPath();
 740             assertTrue("Unexpected primary path " + path, path.contains("member-2-shard-default-config"));
 741
 742             primaryShardInfoCache.putSuccessful("default", new PrimaryShardInfo(system1.actorSelection(
 743                     mockShardActor1.path()), DataStoreVersions.CURRENT_VERSION, Optional.<DataTree>absent()));
 744
 745             shardManager1.underlyingActor().onReceiveCommand(MockClusterWrapper.
 746                 createUnreachableMember("member-2", "akka.tcp://cluster-test@127.0.0.1:2558"));
 747
 748             shardManager1.underlyingActor().waitForUnreachableMember();
 749
 750             shardManager1.tell(new FindPrimary("default", true), getRef());
 751
 752             expectMsgClass(duration("5 seconds"), NoShardLeaderException.class);
 753
 754             assertNull("Expected primaryShardInfoCache entry removed", primaryShardInfoCache.getIfPresent("default"));
 755
 756             shardManager1.tell(new ShardLeaderStateChanged(memberId1, memberId1, Optional.of(mock(DataTree.class)),
 757                     DataStoreVersions.CURRENT_VERSION), mockShardActor1);
 758             shardManager1.tell(new RoleChangeNotification(memberId1,
 759                 RaftState.Follower.name(), RaftState.Leader.name()), mockShardActor1);
 760
 761             shardManager1.tell(new FindPrimary("default", true), getRef());
 762
 763             LocalPrimaryShardFound found1 = expectMsgClass(duration("5 seconds"), LocalPrimaryShardFound.class);
 764             String path1 = found1.getPrimaryPath();
 765             assertTrue("Unexpected primary path " + path1, path1.contains("member-1-shard-default-config"));
 766
 767         }};
 768
 769         JavaTestKit.shutdownActorSystem(system1);
 770         JavaTestKit.shutdownActorSystem(system2);
 771     }
 772
 773
 774     @Test
 775     public void testOnReceiveFindLocalShardForNonExistentShard() throws Exception {
 776         new JavaTestKit(getSystem()) {{
 777             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 778
 779             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 780
 781             shardManager.tell(new FindLocalShard("non-existent", false), getRef());
 782
 783             LocalShardNotFound notFound = expectMsgClass(duration("5 seconds"), LocalShardNotFound.class);
 784
 785             assertEquals("getShardName", "non-existent", notFound.getShardName());
 786         }};
 787     }
 788
 789     @Test
 790     public void testOnReceiveFindLocalShardForExistentShard() throws Exception {
 791         new JavaTestKit(getSystem()) {{
 792             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 793
 794             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 795             shardManager.tell(new ActorInitialized(), mockShardActor);
 796
 797             shardManager.tell(new FindLocalShard(Shard.DEFAULT_NAME, false), getRef());
 798
 799             LocalShardFound found = expectMsgClass(duration("5 seconds"), LocalShardFound.class);
 800
 801             assertTrue("Found path contains " + found.getPath().path().toString(),
 802                     found.getPath().path().toString().contains("member-1-shard-default-config"));
 803         }};
 804     }
 805
 806     @Test
 807     public void testOnReceiveFindLocalShardForNotInitializedShard() throws Exception {
 808         new JavaTestKit(getSystem()) {{
 809             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 810
 811             shardManager.tell(new FindLocalShard(Shard.DEFAULT_NAME, false), getRef());
 812
 813             expectMsgClass(duration("5 seconds"), NotInitializedException.class);
 814         }};
 815     }
 816
 817     @Test
 818     public void testOnReceiveFindLocalShardWaitForShardInitialized() throws Exception {
 819         new JavaTestKit(getSystem()) {{
 820             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
 821
 822             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
 823
 824             // We're passing waitUntilInitialized = true to FindLocalShard so the response should be
 825             // delayed until we send ActorInitialized.
 826             Future<Object> future = Patterns.ask(shardManager, new FindLocalShard(Shard.DEFAULT_NAME, true),
 827                     new Timeout(5, TimeUnit.SECONDS));
 828
 829             shardManager.tell(new ActorInitialized(), mockShardActor);
 830
 831             Object resp = Await.result(future, duration("5 seconds"));
 832             assertTrue("Expected: LocalShardFound, Actual: " + resp, resp instanceof LocalShardFound);
 833         }};
 834     }
 835
 836     @Test
 837     public void testOnRecoveryJournalIsCleaned() {
 838         InMemoryJournal.addEntry(shardMgrID, 1L, new ShardManager.SchemaContextModules(
 839                 ImmutableSet.of("foo")));
 840         InMemoryJournal.addEntry(shardMgrID, 2L, new ShardManager.SchemaContextModules(
 841                 ImmutableSet.of("bar")));
 842         InMemoryJournal.addDeleteMessagesCompleteLatch(shardMgrID);
 843
 844         new JavaTestKit(getSystem()) {{
 845             TestActorRef<TestShardManager> shardManager = TestActorRef.create(getSystem(),
 846                     Props.create(new TestShardManagerCreator(shardMrgIDSuffix)));
 847
 848             shardManager.underlyingActor().waitForRecoveryComplete();
 849             InMemoryJournal.waitForDeleteMessagesComplete(shardMgrID);
 850
 851             // Journal entries up to the last one should've been deleted
 852             Map<Long, Object> journal = InMemoryJournal.get(shardMgrID);
 853             synchronized (journal) {
 854                 assertEquals("Journal size", 0, journal.size());
 855             }
 856         }};
 857     }
 858
 859     @Test
 860     public void testRoleChangeNotificationAndShardLeaderStateChangedReleaseReady() throws Exception {
 861         new JavaTestKit(getSystem()) {
 862             {
 863                 TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 864
 865                 String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 866                 shardManager.underlyingActor().onReceiveCommand(new RoleChangeNotification(
 867                         memberId, RaftState.Candidate.name(), RaftState.Leader.name()));
 868
 869                 verify(ready, never()).countDown();
 870
 871                 shardManager.underlyingActor().onReceiveCommand(new ShardLeaderStateChanged(memberId, memberId,
 872                         Optional.of(mock(DataTree.class)), DataStoreVersions.CURRENT_VERSION));
 873
 874                 verify(ready, times(1)).countDown();
 875
 876             }};
 877     }
 878
 879     @Test
 880     public void testRoleChangeNotificationToFollowerWithShardLeaderStateChangedReleaseReady() throws Exception {
 881         new JavaTestKit(getSystem()) {
 882             {
 883                 TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 884
 885                 String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 886                 shardManager.underlyingActor().onReceiveCommand(new RoleChangeNotification(
 887                         memberId, null, RaftState.Follower.name()));
 888
 889                 verify(ready, never()).countDown();
 890
 891                 shardManager.underlyingActor().onReceiveCommand(MockClusterWrapper.createMemberUp("member-2", getRef().path().toString()));
 892
 893                 shardManager.underlyingActor().onReceiveCommand(new ShardLeaderStateChanged(memberId,
 894                         "member-2-shard-default-" + shardMrgIDSuffix, Optional.of(mock(DataTree.class)),
 895                         DataStoreVersions.CURRENT_VERSION));
 896
 897                 verify(ready, times(1)).countDown();
 898
 899             }};
 900     }
 901
 902     @Test
 903     public void testReadyCountDownForMemberUpAfterLeaderStateChanged() throws Exception {
 904         new JavaTestKit(getSystem()) {
 905             {
 906                 TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 907
 908                 String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
 909                 shardManager.underlyingActor().onReceiveCommand(new RoleChangeNotification(
 910                         memberId, null, RaftState.Follower.name()));
 911
 912                 verify(ready, never()).countDown();
 913
 914                 shardManager.underlyingActor().onReceiveCommand(new ShardLeaderStateChanged(memberId,
 915                         "member-2-shard-default-" + shardMrgIDSuffix, Optional.of(mock(DataTree.class)),
 916                         DataStoreVersions.CURRENT_VERSION));
 917
 918                 shardManager.underlyingActor().onReceiveCommand(MockClusterWrapper.createMemberUp("member-2", getRef().path().toString()));
 919
 920                 verify(ready, times(1)).countDown();
 921
 922             }};
 923     }
 924
 925     @Test
 926     public void testRoleChangeNotificationDoNothingForUnknownShard() throws Exception {
 927         new JavaTestKit(getSystem()) {
 928             {
 929                 TestActorRef<ShardManager> shardManager = TestActorRef.create(getSystem(), newShardMgrProps());
 930
 931                 shardManager.underlyingActor().onReceiveCommand(new RoleChangeNotification(
 932                         "unknown", RaftState.Candidate.name(), RaftState.Leader.name()));
 933
 934                 verify(ready, never()).countDown();
 935
 936             }};
 937     }
 938
 939
 940     @Test
 941     public void testByDefaultSyncStatusIsFalse() throws Exception{
 942         final Props persistentProps = newShardMgrProps();
 943         final TestActorRef<ShardManager> shardManager =
 944                 TestActorRef.create(getSystem(), persistentProps);
 945
 946         ShardManager shardManagerActor = shardManager.underlyingActor();
 947
 948         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
 949     }
 950
 951     @Test
 952     public void testWhenShardIsLeaderSyncStatusIsTrue() throws Exception{
 953         final Props persistentProps = ShardManager.props(new MockClusterWrapper(), new MockConfiguration(),
 954                 newDatastoreContextFactory(DatastoreContext.newBuilder().persistent(true).build()), ready,
 955                 primaryShardInfoCache);
 956         final TestActorRef<ShardManager> shardManager =
 957                 TestActorRef.create(getSystem(), persistentProps);
 958
 959         ShardManager shardManagerActor = shardManager.underlyingActor();
 960         shardManagerActor.onReceiveCommand(new RoleChangeNotification("member-1-shard-default-unknown",
 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 Props persistentProps = newShardMgrProps();
 969         final TestActorRef<ShardManager> shardManager =
 970                 TestActorRef.create(getSystem(), persistentProps);
 971
 972         ShardManager shardManagerActor = shardManager.underlyingActor();
 973         shardManagerActor.onReceiveCommand(new RoleChangeNotification("member-1-shard-default-unknown",
 974                 RaftState.Follower.name(), RaftState.Candidate.name()));
 975
 976         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
 977
 978         // Send a FollowerInitialSyncStatus with status = true for the replica whose current state is candidate
 979         shardManagerActor.onReceiveCommand(new FollowerInitialSyncUpStatus(true, "member-1-shard-default-unknown"));
 980
 981         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
 982     }
 983
 984     @Test
 985     public void testWhenShardIsFollowerSyncStatusDependsOnFollowerInitialSyncStatus() throws Exception{
 986         final Props persistentProps = ShardManager.props(new MockClusterWrapper(), new MockConfiguration(),
 987                 newDatastoreContextFactory(DatastoreContext.newBuilder().persistent(true).build()), ready,
 988                 primaryShardInfoCache);
 989         final TestActorRef<ShardManager> shardManager =
 990                 TestActorRef.create(getSystem(), persistentProps);
 991
 992         ShardManager shardManagerActor = shardManager.underlyingActor();
 993         shardManagerActor.onReceiveCommand(new RoleChangeNotification("member-1-shard-default-unknown",
 994                 RaftState.Candidate.name(), RaftState.Follower.name()));
 995
 996         // Initially will be false
 997         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
 998
 999         // Send status true will make sync status true
1000         shardManagerActor.onReceiveCommand(new FollowerInitialSyncUpStatus(true, "member-1-shard-default-unknown"));
1001
1002         assertEquals(true, shardManagerActor.getMBean().getSyncStatus());
1003
1004         // Send status false will make sync status false
1005         shardManagerActor.onReceiveCommand(new FollowerInitialSyncUpStatus(false, "member-1-shard-default-unknown"));
1006
1007         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
1008
1009     }
1010
1011     @Test
1012     public void testWhenMultipleShardsPresentSyncStatusMustBeTrueForAllShards() throws Exception{
1013         final Props persistentProps = ShardManager.props(new MockClusterWrapper(),
1014                 new MockConfiguration() {
1015                     @Override
1016                     public List<String> getMemberShardNames(String memberName) {
1017                         return Arrays.asList("default", "astronauts");
1018                     }
1019                 },
1020                 newDatastoreContextFactory(DatastoreContext.newBuilder().persistent(true).build()), ready,
1021                 primaryShardInfoCache);
1022         final TestActorRef<ShardManager> shardManager =
1023                 TestActorRef.create(getSystem(), persistentProps);
1024
1025         ShardManager shardManagerActor = shardManager.underlyingActor();
1026
1027         // Initially will be false
1028         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
1029
1030         // Make default shard leader
1031         shardManagerActor.onReceiveCommand(new RoleChangeNotification("member-1-shard-default-unknown",
1032                 RaftState.Follower.name(), RaftState.Leader.name()));
1033
1034         // default = Leader, astronauts is unknown so sync status remains false
1035         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
1036
1037         // Make astronauts shard leader as well
1038         shardManagerActor.onReceiveCommand(new RoleChangeNotification("member-1-shard-astronauts-unknown",
1039                 RaftState.Follower.name(), RaftState.Leader.name()));
1040
1041         // Now sync status should be true
1042         assertEquals(true, shardManagerActor.getMBean().getSyncStatus());
1043
1044         // Make astronauts a Follower
1045         shardManagerActor.onReceiveCommand(new RoleChangeNotification("member-1-shard-astronauts-unknown",
1046                 RaftState.Leader.name(), RaftState.Follower.name()));
1047
1048         // Sync status is not true
1049         assertEquals(false, shardManagerActor.getMBean().getSyncStatus());
1050
1051         // Make the astronauts follower sync status true
1052         shardManagerActor.onReceiveCommand(new FollowerInitialSyncUpStatus(true, "member-1-shard-astronauts-unknown"));
1053
1054         // Sync status is now true
1055         assertEquals(true, shardManagerActor.getMBean().getSyncStatus());
1056
1057     }
1058
1059     @Test
1060     public void testOnReceiveSwitchShardBehavior() throws Exception {
1061         new JavaTestKit(getSystem()) {{
1062             final ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor());
1063
1064             shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
1065             shardManager.tell(new ActorInitialized(), mockShardActor);
1066
1067             shardManager.tell(new SwitchShardBehavior(mockShardName, "Leader", 1000), getRef());
1068
1069             SwitchBehavior switchBehavior = MessageCollectorActor.expectFirstMatching(mockShardActor, SwitchBehavior.class);
1070
1071             assertEquals(RaftState.Leader, switchBehavior.getNewState());
1072             assertEquals(1000, switchBehavior.getNewTerm());
1073         }};
1074     }
1075
1076     @Test
1077     public void testOnReceiveCreateShard() {
1078         new JavaTestKit(getSystem()) {{
1079             datastoreContextBuilder.shardInitializationTimeout(1, TimeUnit.MINUTES).persistent(true);
1080
1081             ActorRef shardManager = getSystem().actorOf(newShardMgrProps(
1082                     new ConfigurationImpl(new EmptyModuleShardConfigProvider())));
1083
1084             SchemaContext schemaContext = TestModel.createTestContext();
1085             shardManager.tell(new UpdateSchemaContext(schemaContext), ActorRef.noSender());
1086
1087             DatastoreContext datastoreContext = DatastoreContext.newBuilder().shardElectionTimeoutFactor(100).
1088                     persistent(false).build();
1089             Shard.Builder shardBuilder = Shard.builder();
1090
1091             ModuleShardConfiguration config = new ModuleShardConfiguration(URI.create("foo-ns"), "foo-module",
1092                     "foo", null, Arrays.asList("member-1", "member-5", "member-6"));
1093             shardManager.tell(new CreateShard(config, shardBuilder, datastoreContext), getRef());
1094
1095             expectMsgClass(duration("5 seconds"), CreateShardReply.class);
1096
1097             shardManager.tell(new FindLocalShard("foo", true), getRef());
1098
1099             expectMsgClass(duration("5 seconds"), LocalShardFound.class);
1100
1101             assertEquals("isRecoveryApplicable", false, shardBuilder.getDatastoreContext().isPersistent());
1102             assertTrue("Epxected ShardPeerAddressResolver", shardBuilder.getDatastoreContext().getShardRaftConfig().
1103                     getPeerAddressResolver() instanceof ShardPeerAddressResolver);
1104             assertEquals("peerMembers", Sets.newHashSet(new ShardIdentifier("foo", "member-5", shardMrgIDSuffix).toString(),
1105                     new ShardIdentifier("foo", "member-6", shardMrgIDSuffix).toString()),
1106                     shardBuilder.getPeerAddresses().keySet());
1107             assertEquals("ShardIdentifier", new ShardIdentifier("foo", "member-1", shardMrgIDSuffix),
1108                     shardBuilder.getId());
1109             assertSame("schemaContext", schemaContext, shardBuilder.getSchemaContext());
1110
1111             // Send CreateShard with same name - should fail.
1112
1113             shardManager.tell(new CreateShard(config, shardBuilder, null), getRef());
1114
1115             expectMsgClass(duration("5 seconds"), akka.actor.Status.Failure.class);
1116         }};
1117     }
1118
1119     @Test
1120     public void testOnReceiveCreateShardWithNoInitialSchemaContext() {
1121         new JavaTestKit(getSystem()) {{
1122             ActorRef shardManager = getSystem().actorOf(newShardMgrProps(
1123                     new ConfigurationImpl(new EmptyModuleShardConfigProvider())));
1124
1125             Shard.Builder shardBuilder = Shard.builder();
1126
1127             ModuleShardConfiguration config = new ModuleShardConfiguration(URI.create("foo-ns"), "foo-module",
1128                     "foo", null, Arrays.asList("member-1"));
1129             shardManager.tell(new CreateShard(config, shardBuilder, null), getRef());
1130
1131             expectMsgClass(duration("5 seconds"), CreateShardReply.class);
1132
1133             SchemaContext schemaContext = TestModel.createTestContext();
1134             shardManager.tell(new UpdateSchemaContext(schemaContext), ActorRef.noSender());
1135
1136             shardManager.tell(new FindLocalShard("foo", true), getRef());
1137
1138             expectMsgClass(duration("5 seconds"), LocalShardFound.class);
1139
1140             assertSame("schemaContext", schemaContext, shardBuilder.getSchemaContext());
1141             assertNotNull("schemaContext is null", shardBuilder.getDatastoreContext());
1142         }};
1143     }
1144
1145     @Test
1146     public void testGetSnapshot() throws Throwable {
1147         JavaTestKit kit = new JavaTestKit(getSystem());
1148
1149         MockConfiguration mockConfig = new MockConfiguration(ImmutableMap.<String, List<String>>builder().
1150                    put("shard1", Arrays.asList("member-1")).
1151                    put("shard2", Arrays.asList("member-1")).build());
1152
1153         ActorRef shardManager = getSystem().actorOf(newShardMgrProps(mockConfig).withDispatcher(
1154                 Dispatchers.DefaultDispatcherId()));
1155
1156         shardManager.tell(GetSnapshot.INSTANCE, kit.getRef());
1157         Failure failure = kit.expectMsgClass(Failure.class);
1158         assertEquals("Failure cause type", IllegalStateException.class, failure.cause().getClass());
1159
1160         kit = new JavaTestKit(getSystem());
1161
1162         shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), ActorRef.noSender());
1163
1164         shardManager.tell(new FindLocalShard("shard1", true), kit.getRef());
1165         kit.expectMsgClass(LocalShardFound.class);
1166         shardManager.tell(new FindLocalShard("shard2", true), kit.getRef());
1167         kit.expectMsgClass(LocalShardFound.class);
1168
1169         shardManager.tell(GetSnapshot.INSTANCE, kit.getRef());
1170
1171         DatastoreSnapshot datastoreSnapshot = kit.expectMsgClass(DatastoreSnapshot.class);
1172
1173         assertEquals("getType", shardMrgIDSuffix, datastoreSnapshot.getType());
1174         List<ShardSnapshot> shardSnapshots = datastoreSnapshot.getShardSnapshots();
1175         Set<String> actualShardNames = new HashSet<>();
1176         for(ShardSnapshot s: shardSnapshots) {
1177             actualShardNames.add(s.getName());
1178         }
1179
1180         assertEquals("Shard names", Sets.newHashSet("shard1", "shard2"), actualShardNames);
1181
1182         shardManager.tell(PoisonPill.getInstance(), ActorRef.noSender());
1183     }
1184
1185     @Test
1186     public void testAddShardReplicaForNonExistentShard() throws Exception {
1187         new JavaTestKit(getSystem()) {{
1188             ActorRef shardManager = getSystem().actorOf(newShardMgrProps(
1189                     new ConfigurationImpl(new EmptyModuleShardConfigProvider())));
1190
1191             shardManager.tell(new AddShardReplica("model-inventory"), getRef());
1192             Status.Failure resp = expectMsgClass(duration("2 seconds"), Status.Failure.class);
1193
1194             assertEquals("Failure obtained", true,
1195                           (resp.cause() instanceof IllegalArgumentException));
1196         }};
1197     }
1198
1199     @Test
1200     public void testAddShardReplicaForAlreadyCreatedShard() throws Exception {
1201         new JavaTestKit(getSystem()) {{
1202             ActorRef shardManager = getSystem().actorOf(newShardMgrProps());
1203             shardManager.tell(new AddShardReplica("default"), getRef());
1204             Status.Failure resp = expectMsgClass(duration("2 seconds"), Status.Failure.class);
1205             assertEquals("Failure obtained", true,
1206                           (resp.cause() instanceof IllegalArgumentException));
1207         }};
1208     }
1209
1210     @Test
1211     public void testAddShardReplica() throws Exception {
1212         MockConfiguration mockConfig =
1213                 new MockConfiguration(ImmutableMap.<String, List<String>>builder().
1214                    put("default", Arrays.asList("member-1", "member-2")).
1215                    put("astronauts", Arrays.asList("member-2")).build());
1216
1217         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
1218
1219         // Create an ActorSystem ShardManager actor for member-1.
1220         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
1221         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
1222         ActorRef mockDefaultShardActor = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
1223         final TestActorRef<ForwardingShardManager> newReplicaShardManager = TestActorRef.create(system1,
1224                 newPropsShardMgrWithMockShardActor("shardManager1", mockDefaultShardActor,
1225                    new ClusterWrapperImpl(system1), mockConfig), shardManagerID);
1226
1227         // Create an ActorSystem ShardManager actor for member-2.
1228         final ActorSystem system2 = ActorSystem.create("cluster-test",
1229             ConfigFactory.load().getConfig("Member2"));
1230         Cluster.get(system2).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
1231
1232         String name = new ShardIdentifier("astronauts", "member-2", "config").toString();
1233         final TestActorRef<MockRespondActor> mockShardLeaderActor =
1234             TestActorRef.create(system2, Props.create(MockRespondActor.class), name);
1235         final TestActorRef<ForwardingShardManager> leaderShardManager = TestActorRef.create(system2,
1236                 newPropsShardMgrWithMockShardActor("shardManager2", mockShardLeaderActor,
1237                         new ClusterWrapperImpl(system2), mockConfig), shardManagerID);
1238
1239         new JavaTestKit(system1) {{
1240
1241             newReplicaShardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
1242             leaderShardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
1243
1244             leaderShardManager.tell(new ActorInitialized(), mockShardLeaderActor);
1245
1246             String memberId2 = "member-2-shard-astronauts-" + shardMrgIDSuffix;
1247             short leaderVersion = DataStoreVersions.CURRENT_VERSION - 1;
1248             leaderShardManager.tell(new ShardLeaderStateChanged(memberId2, memberId2,
1249                     Optional.of(mock(DataTree.class)), leaderVersion), mockShardLeaderActor);
1250             leaderShardManager.tell(new RoleChangeNotification(memberId2,
1251                     RaftState.Candidate.name(), RaftState.Leader.name()), mockShardLeaderActor);
1252
1253             newReplicaShardManager.underlyingActor().waitForMemberUp();
1254             leaderShardManager.underlyingActor().waitForMemberUp();
1255
1256             //construct a mock response message
1257             AddServerReply response = new AddServerReply(ServerChangeStatus.OK, memberId2);
1258             mockShardLeaderActor.underlyingActor().updateResponse(response);
1259             newReplicaShardManager.tell(new AddShardReplica("astronauts"), getRef());
1260             AddServer addServerMsg = MessageCollectorActor.expectFirstMatching(mockShardLeaderActor,
1261                 AddServer.class);
1262             String addServerId = "member-1-shard-astronauts-" + shardMrgIDSuffix;
1263             assertEquals("AddServer serverId", addServerId, addServerMsg.getNewServerId());
1264
1265             expectMsgClass(duration("5 seconds"), Status.Success.class);
1266         }};
1267
1268         JavaTestKit.shutdownActorSystem(system1);
1269         JavaTestKit.shutdownActorSystem(system2);
1270     }
1271
1272     @Test
1273     public void testAddShardReplicaWithFindPrimaryTimeout() throws Exception {
1274         MockConfiguration mockConfig =
1275                 new MockConfiguration(ImmutableMap.<String, List<String>>builder().
1276                    put("default", Arrays.asList("member-1", "member-2")).
1277                    put("astronauts", Arrays.asList("member-2")).build());
1278
1279         String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
1280
1281         // Create an ActorSystem ShardManager actor for member-1.
1282         final ActorSystem system1 = ActorSystem.create("cluster-test", ConfigFactory.load().getConfig("Member1"));
1283         Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
1284         ActorRef mockDefaultShardActor = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
1285         final TestActorRef<ForwardingShardManager> newReplicaShardManager = TestActorRef.create(system1,
1286                 newPropsShardMgrWithMockShardActor("shardManager1", mockDefaultShardActor,
1287                    new ClusterWrapperImpl(system1), mockConfig), shardManagerID);
1288
1289         new JavaTestKit(system1) {{
1290
1291             newReplicaShardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
1292             MockClusterWrapper.sendMemberUp(newReplicaShardManager, "member-2", getRef().path().toString());
1293             newReplicaShardManager.underlyingActor().waitForMemberUp();
1294
1295             newReplicaShardManager.tell(new AddShardReplica("astronauts"), getRef());
1296             Status.Failure resp = expectMsgClass(duration("5 seconds"), Status.Failure.class);
1297             assertEquals("Failure obtained", true,
1298                           (resp.cause() instanceof RuntimeException));
1299         }};
1300
1301         JavaTestKit.shutdownActorSystem(system1);
1302     }
1303
1304     @Test
1305     public void testRemoveShardReplicaForNonExistentShard() throws Exception {
1306         new JavaTestKit(getSystem()) {{
1307             ActorRef shardManager = getSystem().actorOf(newShardMgrProps(
1308                     new ConfigurationImpl(new EmptyModuleShardConfigProvider())));
1309
1310             shardManager.tell(new RemoveShardReplica("model-inventory"), getRef());
1311             Status.Failure resp = expectMsgClass(duration("2 seconds"), Status.Failure.class);
1312             assertEquals("Failure obtained", true,
1313                          (resp.cause() instanceof IllegalArgumentException));
1314         }};
1315
1316     }
1317
1318     private static class TestShardManager extends ShardManager {
1319         private final CountDownLatch recoveryComplete = new CountDownLatch(1);
1320
1321         TestShardManager(String shardMrgIDSuffix) {
1322             super(new MockClusterWrapper(), new MockConfiguration(),
1323                     newDatastoreContextFactory(DatastoreContext.newBuilder().dataStoreType(shardMrgIDSuffix).build()),
1324                     ready, new PrimaryShardInfoFutureCache());
1325         }
1326
1327         @Override
1328         public void handleRecover(Object message) throws Exception {
1329             try {
1330                 super.handleRecover(message);
1331             } finally {
1332                 if(message instanceof RecoveryCompleted) {
1333                     recoveryComplete.countDown();
1334                 }
1335             }
1336         }
1337
1338         void waitForRecoveryComplete() {
1339             assertEquals("Recovery complete", true,
1340                     Uninterruptibles.awaitUninterruptibly(recoveryComplete, 5, TimeUnit.SECONDS));
1341         }
1342     }
1343
1344     @SuppressWarnings("serial")
1345     static class TestShardManagerCreator implements Creator<TestShardManager> {
1346         String shardMrgIDSuffix;
1347
1348         TestShardManagerCreator(String shardMrgIDSuffix) {
1349             this.shardMrgIDSuffix = shardMrgIDSuffix;
1350         }
1351
1352         @Override
1353         public TestShardManager create() throws Exception {
1354             return new TestShardManager(shardMrgIDSuffix);
1355         }
1356
1357     }
1358
1359     private static class DelegatingShardManagerCreator implements Creator<ShardManager> {
1360         private static final long serialVersionUID = 1L;
1361         private final Creator<ShardManager> delegate;
1362
1363         public DelegatingShardManagerCreator(Creator<ShardManager> delegate) {
1364             this.delegate = delegate;
1365         }
1366
1367         @Override
1368         public ShardManager create() throws Exception {
1369             return delegate.create();
1370         }
1371     }
1372
1373     private static class ForwardingShardManager extends ShardManager {
1374         private CountDownLatch findPrimaryMessageReceived = new CountDownLatch(1);
1375         private CountDownLatch memberUpReceived = new CountDownLatch(1);
1376         private CountDownLatch memberRemovedReceived = new CountDownLatch(1);
1377         private CountDownLatch memberUnreachableReceived = new CountDownLatch(1);
1378         private CountDownLatch memberReachableReceived = new CountDownLatch(1);
1379         private final ActorRef shardActor;
1380         private final String name;
1381
1382         protected ForwardingShardManager(ClusterWrapper cluster, Configuration configuration,
1383                 DatastoreContextFactory factory, CountDownLatch waitTillReadyCountdownLatch, String name,
1384                 ActorRef shardActor, PrimaryShardInfoFutureCache primaryShardInfoCache) {
1385             super(cluster, configuration, factory, waitTillReadyCountdownLatch, primaryShardInfoCache);
1386             this.shardActor = shardActor;
1387             this.name = name;
1388         }
1389
1390         @Override
1391         public void handleCommand(Object message) throws Exception {
1392             try{
1393                 super.handleCommand(message);
1394             } finally {
1395                 if(message instanceof FindPrimary) {
1396                     findPrimaryMessageReceived.countDown();
1397                 } else if(message instanceof ClusterEvent.MemberUp) {
1398                     String role = ((ClusterEvent.MemberUp)message).member().roles().head();
1399                     if(!getCluster().getCurrentMemberName().equals(role)) {
1400                         memberUpReceived.countDown();
1401                     }
1402                 } else if(message instanceof ClusterEvent.MemberRemoved) {
1403                     String role = ((ClusterEvent.MemberRemoved)message).member().roles().head();
1404                     if(!getCluster().getCurrentMemberName().equals(role)) {
1405                         memberRemovedReceived.countDown();
1406                     }
1407                 } else if(message instanceof ClusterEvent.UnreachableMember) {
1408                     String role = ((ClusterEvent.UnreachableMember)message).member().roles().head();
1409                     if(!getCluster().getCurrentMemberName().equals(role)) {
1410                         memberUnreachableReceived.countDown();
1411                     }
1412                 } else if(message instanceof ClusterEvent.ReachableMember) {
1413                     String role = ((ClusterEvent.ReachableMember)message).member().roles().head();
1414                     if(!getCluster().getCurrentMemberName().equals(role)) {
1415                         memberReachableReceived.countDown();
1416                     }
1417                 }
1418             }
1419         }
1420
1421         @Override
1422         public String persistenceId() {
1423             return name;
1424         }
1425
1426         @Override
1427         protected ActorRef newShardActor(SchemaContext schemaContext, ShardInformation info) {
1428             return shardActor;
1429         }
1430
1431         void waitForMemberUp() {
1432             assertEquals("MemberUp received", true,
1433                     Uninterruptibles.awaitUninterruptibly(memberUpReceived, 5, TimeUnit.SECONDS));
1434             memberUpReceived = new CountDownLatch(1);
1435         }
1436
1437         void waitForMemberRemoved() {
1438             assertEquals("MemberRemoved received", true,
1439                     Uninterruptibles.awaitUninterruptibly(memberRemovedReceived, 5, TimeUnit.SECONDS));
1440             memberRemovedReceived = new CountDownLatch(1);
1441         }
1442
1443         void waitForUnreachableMember() {
1444             assertEquals("UnreachableMember received", true,
1445                 Uninterruptibles.awaitUninterruptibly(memberUnreachableReceived, 5, TimeUnit.SECONDS
1446                 ));
1447             memberUnreachableReceived = new CountDownLatch(1);
1448         }
1449
1450         void waitForReachableMember() {
1451             assertEquals("ReachableMember received", true,
1452                 Uninterruptibles.awaitUninterruptibly(memberReachableReceived, 5, TimeUnit.SECONDS));
1453             memberReachableReceived = new CountDownLatch(1);
1454         }
1455
1456         void verifyFindPrimary() {
1457             assertEquals("FindPrimary received", true,
1458                     Uninterruptibles.awaitUninterruptibly(findPrimaryMessageReceived, 5, TimeUnit.SECONDS));
1459             findPrimaryMessageReceived = new CountDownLatch(1);
1460         }
1461     }
1462
1463     private static class MockRespondActor extends MessageCollectorActor {
1464
1465         private volatile Object responseMsg;
1466
1467         public void updateResponse(Object response) {
1468             responseMsg = response;
1469         }
1470
1471         @Override
1472         public void onReceive(Object message) throws Exception {
1473             super.onReceive(message);
1474             if (message instanceof AddServer) {
1475                 if (responseMsg != null) {
1476                     getSender().tell(responseMsg, getSelf());
1477                     responseMsg = null;
1478                 }
1479             }
1480         }
1481     }
1482 }