+ @Test
+ public void testAddShardReplicaWithPreExistingLocalReplicaLeader() throws Exception {
+ LOG.info("testAddShardReplicaWithPreExistingLocalReplicaLeader starting");
+ new JavaTestKit(getSystem()) {{
+ String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
+ ActorRef shardManager = actorFactory.createActor(newPropsShardMgrWithMockShardActor());
+
+ shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
+ shardManager.tell(new ActorInitialized(), mockShardActor);
+ shardManager.tell(new ShardLeaderStateChanged(memberId, memberId, Optional.of(mock(DataTree.class)),
+ DataStoreVersions.CURRENT_VERSION), getRef());
+ shardManager.tell((new RoleChangeNotification(memberId, RaftState.Candidate.name(),
+ RaftState.Leader.name())), mockShardActor);
+
+ shardManager.tell(new AddShardReplica(Shard.DEFAULT_NAME), getRef());
+ Failure resp = expectMsgClass(duration("5 seconds"), Failure.class);
+ assertEquals("Failure cause", AlreadyExistsException.class, resp.cause().getClass());
+
+ shardManager.tell(new FindLocalShard(Shard.DEFAULT_NAME, false), getRef());
+ expectMsgClass(duration("5 seconds"), LocalShardFound.class);
+ }};
+
+ LOG.info("testAddShardReplicaWithPreExistingLocalReplicaLeader ending");
+ }
+
+ @Test
+ public void testAddShardReplicaWithAddServerReplyFailure() throws Exception {
+ LOG.info("testAddShardReplicaWithAddServerReplyFailure starting");
+ new JavaTestKit(getSystem()) {{
+ JavaTestKit mockShardLeaderKit = new JavaTestKit(getSystem());
+
+ MockConfiguration mockConfig =
+ new MockConfiguration(ImmutableMap.<String, List<String>>builder().
+ put("astronauts", Arrays.asList("member-2")).build());
+
+ ActorRef mockNewReplicaShardActor = newMockShardActor(getSystem(), "astronauts", "member-1");
+ final TestActorRef<TestShardManager> shardManager = actorFactory.createTestActor(
+ newTestShardMgrBuilder(mockConfig).shardActor(mockNewReplicaShardActor).props(), shardMgrID);
+ shardManager.underlyingActor().setMessageInterceptor(newFindPrimaryInterceptor(mockShardLeaderKit.getRef()));
+
+ shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
+
+ JavaTestKit terminateWatcher = new JavaTestKit(getSystem());
+ terminateWatcher.watch(mockNewReplicaShardActor);
+
+ shardManager.tell(new AddShardReplica("astronauts"), getRef());
+
+ AddServer addServerMsg = mockShardLeaderKit.expectMsgClass(AddServer.class);
+ assertEquals("AddServer serverId", "member-1-shard-astronauts-" + shardMrgIDSuffix,
+ addServerMsg.getNewServerId());
+ mockShardLeaderKit.reply(new AddServerReply(ServerChangeStatus.TIMEOUT, null));
+
+ Failure failure = expectMsgClass(duration("5 seconds"), Failure.class);
+ assertEquals("Failure cause", TimeoutException.class, failure.cause().getClass());
+
+ shardManager.tell(new FindLocalShard("astronauts", false), getRef());
+ expectMsgClass(duration("5 seconds"), LocalShardNotFound.class);
+
+ terminateWatcher.expectTerminated(mockNewReplicaShardActor);
+
+ shardManager.tell(new AddShardReplica("astronauts"), getRef());
+ mockShardLeaderKit.expectMsgClass(AddServer.class);
+ mockShardLeaderKit.reply(new AddServerReply(ServerChangeStatus.NO_LEADER, null));
+ failure = expectMsgClass(duration("5 seconds"), Failure.class);
+ assertEquals("Failure cause", NoShardLeaderException.class, failure.cause().getClass());
+ }};
+
+ LOG.info("testAddShardReplicaWithAddServerReplyFailure ending");
+ }
+
+ @Test
+ public void testAddShardReplicaWithAlreadyInProgress() throws Exception {
+ testServerChangeWhenAlreadyInProgress("astronauts", new AddShardReplica("astronauts"),
+ AddServer.class, new AddShardReplica("astronauts"));
+ }
+
+ @Test
+ public void testAddShardReplicaWithFindPrimaryTimeout() throws Exception {
+ LOG.info("testAddShardReplicaWithFindPrimaryTimeout starting");
+ new JavaTestKit(getSystem()) {{
+ MockConfiguration mockConfig = new MockConfiguration(ImmutableMap.<String, List<String>>builder().
+ put("astronauts", Arrays.asList("member-2")).build());
+
+ final ActorRef newReplicaShardManager = actorFactory.createActor(newTestShardMgrBuilder(mockConfig).
+ shardActor(mockShardActor).props(), shardMgrID);
+
+ newReplicaShardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
+ MockClusterWrapper.sendMemberUp(newReplicaShardManager, "member-2", getRef().path().toString());
+
+ newReplicaShardManager.tell(new AddShardReplica("astronauts"), getRef());
+ Status.Failure resp = expectMsgClass(duration("5 seconds"), Status.Failure.class);
+ assertEquals("Failure obtained", true,
+ (resp.cause() instanceof RuntimeException));
+ }};
+
+ LOG.info("testAddShardReplicaWithFindPrimaryTimeout ending");
+ }
+
+ @Test
+ public void testRemoveShardReplicaForNonExistentShard() throws Exception {
+ new JavaTestKit(getSystem()) {{
+ ActorRef shardManager = actorFactory.createActor(newShardMgrProps(
+ new ConfigurationImpl(new EmptyModuleShardConfigProvider())));
+
+ shardManager.tell(new RemoveShardReplica("model-inventory", "member-1"), getRef());
+ Status.Failure resp = expectMsgClass(duration("10 seconds"), Status.Failure.class);
+ assertEquals("Failure obtained", true,
+ (resp.cause() instanceof PrimaryNotFoundException));
+ }};
+ }
+
+ @Test
+ /**
+ * Primary is Local
+ */
+ public void testRemoveShardReplicaLocal() throws Exception {
+ new JavaTestKit(getSystem()) {{
+ String memberId = "member-1-shard-default-" + shardMrgIDSuffix;
+
+ final TestActorRef<MockRespondActor> respondActor =
+ TestActorRef.create(getSystem(), Props.create(MockRespondActor.class), memberId);
+
+ ActorRef shardManager = getSystem().actorOf(newPropsShardMgrWithMockShardActor(respondActor));
+
+ shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
+ shardManager.tell(new ActorInitialized(), respondActor);
+ shardManager.tell(new ShardLeaderStateChanged(memberId, memberId, Optional.of(mock(DataTree.class)),
+ DataStoreVersions.CURRENT_VERSION), getRef());
+ shardManager.tell((new RoleChangeNotification(memberId, RaftState.Candidate.name(),
+ RaftState.Leader.name())), respondActor);
+
+ respondActor.underlyingActor().updateResponse(new RemoveServerReply(ServerChangeStatus.OK, null));
+ shardManager.tell(new RemoveShardReplica(Shard.DEFAULT_NAME, "member-1"), getRef());
+ final RemoveServer removeServer = MessageCollectorActor.expectFirstMatching(respondActor, RemoveServer.class);
+ assertEquals(new ShardIdentifier("default", "member-1", shardMrgIDSuffix).toString(),
+ removeServer.getServerId());
+ expectMsgClass(duration("5 seconds"), Success.class);
+ }};
+ }
+
+ @Test
+ public void testRemoveShardReplicaRemote() throws Exception {
+ MockConfiguration mockConfig =
+ new MockConfiguration(ImmutableMap.<String, List<String>>builder().
+ put("default", Arrays.asList("member-1", "member-2")).
+ put("astronauts", Arrays.asList("member-1")).build());
+
+ String shardManagerID = ShardManagerIdentifier.builder().type(shardMrgIDSuffix).build().toString();
+
+ // Create an ActorSystem ShardManager actor for member-1.
+ final ActorSystem system1 = newActorSystem("Member1");
+ Cluster.get(system1).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
+ ActorRef mockDefaultShardActor = newMockShardActor(system1, Shard.DEFAULT_NAME, "member-1");
+
+ final TestActorRef<TestShardManager> newReplicaShardManager = TestActorRef.create(system1,
+ newTestShardMgrBuilder().configuration(mockConfig).shardActor(mockDefaultShardActor).cluster(
+ new ClusterWrapperImpl(system1)).props(),
+ shardManagerID);
+
+ // Create an ActorSystem ShardManager actor for member-2.
+ final ActorSystem system2 = newActorSystem("Member2");
+ Cluster.get(system2).join(AddressFromURIString.parse("akka.tcp://cluster-test@127.0.0.1:2558"));
+
+ String name = new ShardIdentifier("default", "member-2", shardMrgIDSuffix).toString();
+ final TestActorRef<MockRespondActor> mockShardLeaderActor =
+ TestActorRef.create(system2, Props.create(MockRespondActor.class), name);
+
+ LOG.error("Mock Shard Leader Actor : {}", mockShardLeaderActor);
+
+ final TestActorRef<TestShardManager> leaderShardManager = TestActorRef.create(system2,
+ newTestShardMgrBuilder().configuration(mockConfig).shardActor(mockShardLeaderActor).cluster(
+ new ClusterWrapperImpl(system2)).props(),
+ shardManagerID);
+
+ // Because mockShardLeaderActor is created at the top level of the actor system it has an address like so,
+ // akka.tcp://cluster-test@127.0.0.1:2559/user/member-2-shard-default-config1
+ // However when a shard manager has a local shard which is a follower and a leader that is remote it will
+ // try to compute an address for the remote shard leader using the ShardPeerAddressResolver. This address will
+ // look like so,
+ // akka.tcp://cluster-test@127.0.0.1:2559/user/shardmanager-config1/member-2-shard-default-config1
+ // In this specific case if we did a FindPrimary for shard default from member-1 we would come up
+ // with the address of an actor which does not exist, therefore any message sent to that actor would go to
+ // dead letters.
+ // To work around this problem we create a ForwardingActor with the right address and pass to it the
+ // mockShardLeaderActor. The ForwardingActor simply forwards all messages to the mockShardLeaderActor and every
+ // thing works as expected
+ final ActorRef actorRef = leaderShardManager.underlyingActor().context()
+ .actorOf(Props.create(ForwardingActor.class, mockShardLeaderActor), "member-2-shard-default-" + shardMrgIDSuffix);
+
+ LOG.error("Forwarding actor : {}", actorRef);
+
+ new JavaTestKit(system1) {{
+
+ newReplicaShardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
+ leaderShardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
+
+ leaderShardManager.tell(new ActorInitialized(), mockShardLeaderActor);
+ newReplicaShardManager.tell(new ActorInitialized(), mockShardLeaderActor);
+
+ String memberId2 = "member-2-shard-default-" + shardMrgIDSuffix;
+ short leaderVersion = DataStoreVersions.CURRENT_VERSION - 1;
+ leaderShardManager.tell(new ShardLeaderStateChanged(memberId2, memberId2,
+ Optional.of(mock(DataTree.class)), leaderVersion), mockShardLeaderActor);
+ leaderShardManager.tell(new RoleChangeNotification(memberId2,
+ RaftState.Candidate.name(), RaftState.Leader.name()), mockShardLeaderActor);
+
+ String memberId1 = "member-1-shard-default-" + shardMrgIDSuffix;
+ newReplicaShardManager.tell(new ShardLeaderStateChanged(memberId1, memberId2,
+ Optional.of(mock(DataTree.class)), leaderVersion), mockShardActor);
+ newReplicaShardManager.tell(new RoleChangeNotification(memberId1,
+ RaftState.Candidate.name(), RaftState.Follower.name()), mockShardActor);
+
+ newReplicaShardManager.underlyingActor().waitForMemberUp();
+ leaderShardManager.underlyingActor().waitForMemberUp();
+
+ //construct a mock response message
+ RemoveServerReply response = new RemoveServerReply(ServerChangeStatus.OK, memberId2);
+ mockShardLeaderActor.underlyingActor().updateResponse(response);
+ newReplicaShardManager.tell(new RemoveShardReplica("default", "member-1"), getRef());
+ RemoveServer removeServer = MessageCollectorActor.expectFirstMatching(mockShardLeaderActor,
+ RemoveServer.class);
+ String removeServerId = new ShardIdentifier("default", "member-1", shardMrgIDSuffix).toString();
+ assertEquals("RemoveServer serverId", removeServerId, removeServer.getServerId());
+ expectMsgClass(duration("5 seconds"), Status.Success.class);
+ }};
+
+ }
+
+ @Test
+ public void testRemoveShardReplicaWhenAnotherRemoveShardReplicaAlreadyInProgress() throws Exception {
+ testServerChangeWhenAlreadyInProgress("astronauts", new RemoveShardReplica("astronauts", "member-2"),
+ RemoveServer.class, new RemoveShardReplica("astronauts", "member-3"));
+ }
+
+ @Test
+ public void testRemoveShardReplicaWhenAddShardReplicaAlreadyInProgress() throws Exception {
+ testServerChangeWhenAlreadyInProgress("astronauts", new AddShardReplica("astronauts"),
+ AddServer.class, new RemoveShardReplica("astronauts", "member-2"));
+ }
+
+
+ public void testServerChangeWhenAlreadyInProgress(final String shardName, final Object firstServerChange,
+ final Class firstForwardedServerChangeClass,
+ final Object secondServerChange) throws Exception {
+ new JavaTestKit(getSystem()) {{
+ JavaTestKit mockShardLeaderKit = new JavaTestKit(getSystem());
+ JavaTestKit secondRequestKit = new JavaTestKit(getSystem());
+
+ MockConfiguration mockConfig =
+ new MockConfiguration(ImmutableMap.<String, List<String>>builder().
+ put(shardName, Arrays.asList("member-2")).build());
+
+ final TestActorRef<TestShardManager> shardManager = TestActorRef.create(getSystem(),
+ newTestShardMgrBuilder().configuration(mockConfig).shardActor(mockShardActor).cluster(
+ new MockClusterWrapper()).props(),
+ shardMgrID);
+
+ shardManager.underlyingActor().setMessageInterceptor(newFindPrimaryInterceptor(mockShardLeaderKit.getRef()));
+
+ shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
+
+ shardManager.tell(firstServerChange, getRef());
+
+ mockShardLeaderKit.expectMsgClass(firstForwardedServerChangeClass);
+
+ shardManager.tell(secondServerChange, secondRequestKit.getRef());
+
+ secondRequestKit.expectMsgClass(duration("5 seconds"), Failure.class);
+ }};
+ }
+
+ @Test
+ public void testServerRemovedShardActorNotRunning() throws Exception {
+ LOG.info("testServerRemovedShardActorNotRunning starting");
+ new JavaTestKit(getSystem()) {{
+ MockConfiguration mockConfig =
+ new MockConfiguration(ImmutableMap.<String, List<String>>builder().
+ put("default", Arrays.asList("member-1", "member-2")).
+ put("astronauts", Arrays.asList("member-2")).
+ put("people", Arrays.asList("member-1", "member-2")).build());
+
+ TestActorRef<TestShardManager> shardManager = actorFactory.createTestActor(newShardMgrProps(mockConfig));
+
+ shardManager.underlyingActor().waitForRecoveryComplete();
+ shardManager.tell(new FindLocalShard("people", false), getRef());
+ expectMsgClass(duration("5 seconds"), NotInitializedException.class);
+
+ shardManager.tell(new FindLocalShard("default", false), getRef());
+ expectMsgClass(duration("5 seconds"), NotInitializedException.class);
+
+ // Removed the default shard replica from member-1
+ ShardIdentifier.Builder builder = new ShardIdentifier.Builder();
+ ShardIdentifier shardId = builder.shardName("default").memberName("member-1").type(shardMrgIDSuffix).build();
+ shardManager.tell(new ServerRemoved(shardId.toString()), getRef());
+
+ shardManager.underlyingActor().verifySnapshotPersisted(Sets.newHashSet("people"));
+ }};
+
+ LOG.info("testServerRemovedShardActorNotRunning ending");
+ }
+
+ @Test
+ public void testServerRemovedShardActorRunning() throws Exception {
+ LOG.info("testServerRemovedShardActorRunning starting");
+ new JavaTestKit(getSystem()) {{
+ MockConfiguration mockConfig =
+ new MockConfiguration(ImmutableMap.<String, List<String>>builder().
+ put("default", Arrays.asList("member-1", "member-2")).
+ put("astronauts", Arrays.asList("member-2")).
+ put("people", Arrays.asList("member-1", "member-2")).build());
+
+ String shardId = ShardIdentifier.builder().shardName("default").memberName("member-1").
+ type(shardMrgIDSuffix).build().toString();
+ TestActorRef<MessageCollectorActor> shard = actorFactory.createTestActor(
+ MessageCollectorActor.props(), shardId);
+
+ TestActorRef<TestShardManager> shardManager = actorFactory.createTestActor(
+ newTestShardMgrBuilder(mockConfig).addShardActor("default", shard).props());
+
+ shardManager.underlyingActor().waitForRecoveryComplete();
+
+ shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
+ shardManager.tell(new ActorInitialized(), shard);
+
+ waitForShardInitialized(shardManager, "people", this);
+ waitForShardInitialized(shardManager, "default", this);
+
+ // Removed the default shard replica from member-1
+ shardManager.tell(new ServerRemoved(shardId), getRef());
+
+ shardManager.underlyingActor().verifySnapshotPersisted(Sets.newHashSet("people"));
+
+ MessageCollectorActor.expectFirstMatching(shard, Shutdown.class);
+ }};
+
+ LOG.info("testServerRemovedShardActorRunning ending");
+ }
+
+
+ @Test
+ public void testShardPersistenceWithRestoredData() throws Exception {
+ LOG.info("testShardPersistenceWithRestoredData starting");
+ new JavaTestKit(getSystem()) {{
+ MockConfiguration mockConfig =
+ new MockConfiguration(ImmutableMap.<String, List<String>>builder().
+ put("default", Arrays.asList("member-1", "member-2")).
+ put("astronauts", Arrays.asList("member-2")).
+ put("people", Arrays.asList("member-1", "member-2")).build());
+ String[] restoredShards = {"default", "astronauts"};
+ ShardManagerSnapshot snapshot = new ShardManagerSnapshot(Arrays.asList(restoredShards));
+ InMemorySnapshotStore.addSnapshot("shard-manager-" + shardMrgIDSuffix, snapshot);
+
+ //create shardManager to come up with restored data
+ TestActorRef<TestShardManager> newRestoredShardManager = actorFactory.createTestActor(
+ newShardMgrProps(mockConfig));
+
+ newRestoredShardManager.underlyingActor().waitForRecoveryComplete();
+
+ newRestoredShardManager.tell(new FindLocalShard("people", false), getRef());
+ LocalShardNotFound notFound = expectMsgClass(duration("5 seconds"), LocalShardNotFound.class);
+ assertEquals("for uninitialized shard", "people", notFound.getShardName());
+
+ //Verify a local shard is created for the restored shards,
+ //although we expect a NotInitializedException for the shards as the actor initialization
+ //message is not sent for them
+ newRestoredShardManager.tell(new FindLocalShard("default", false), getRef());
+ expectMsgClass(duration("5 seconds"), NotInitializedException.class);
+
+ newRestoredShardManager.tell(new FindLocalShard("astronauts", false), getRef());
+ expectMsgClass(duration("5 seconds"), NotInitializedException.class);
+ }};
+
+ LOG.info("testShardPersistenceWithRestoredData ending");
+ }
+
+ @Test
+ public void testShutDown() throws Exception {
+ LOG.info("testShutDown starting");
+ new JavaTestKit(getSystem()) {{
+ MockConfiguration mockConfig =
+ new MockConfiguration(ImmutableMap.<String, List<String>>builder().
+ put("shard1", Arrays.asList("member-1")).
+ put("shard2", Arrays.asList("member-1")).build());
+
+ String shardId1 = ShardIdentifier.builder().shardName("shard1").memberName("member-1").
+ type(shardMrgIDSuffix).build().toString();
+ TestActorRef<MessageCollectorActor> shard1 = actorFactory.createTestActor(
+ MessageCollectorActor.props(), shardId1);
+
+ String shardId2 = ShardIdentifier.builder().shardName("shard2").memberName("member-1").
+ type(shardMrgIDSuffix).build().toString();
+ TestActorRef<MessageCollectorActor> shard2 = actorFactory.createTestActor(
+ MessageCollectorActor.props(), shardId2);
+
+ TestActorRef<TestShardManager> shardManager = actorFactory.createTestActor(newTestShardMgrBuilder(
+ mockConfig).addShardActor("shard1", shard1).addShardActor("shard2", shard2).props());
+
+ shardManager.tell(new UpdateSchemaContext(TestModel.createTestContext()), getRef());
+ shardManager.tell(new ActorInitialized(), shard1);
+ shardManager.tell(new ActorInitialized(), shard2);
+
+ FiniteDuration duration = FiniteDuration.create(5, TimeUnit.SECONDS);
+ Future<Boolean> stopFuture = Patterns.gracefulStop(shardManager, duration, new Shutdown());
+
+ MessageCollectorActor.expectFirstMatching(shard1, Shutdown.class);
+ MessageCollectorActor.expectFirstMatching(shard2, Shutdown.class);
+
+ try {
+ Await.ready(stopFuture, FiniteDuration.create(500, TimeUnit.MILLISECONDS));
+ fail("ShardManager actor stopped without waiting for the Shards to be stopped");
+ } catch(TimeoutException e) {
+ // expected
+ }
+
+ actorFactory.killActor(shard1, this);
+ actorFactory.killActor(shard2, this);
+
+ Boolean stopped = Await.result(stopFuture, duration);
+ assertEquals("Stopped", Boolean.TRUE, stopped);
+ }};
+
+ LOG.info("testShutDown ending");
+ }
+
+ private static class TestShardManager extends ShardManager {
+ private final CountDownLatch recoveryComplete = new CountDownLatch(1);
+ private final CountDownLatch snapshotPersist = new CountDownLatch(1);
+ private ShardManagerSnapshot snapshot;
+ private final Map<String, ActorRef> shardActors;
+ private final ActorRef shardActor;