+ @Test
+ public void testLeaderIsolationWithPendingCandidateAdded() throws Exception {
+ testLog.info("testLeaderIsolationWithPendingCandidateAdded starting");
+
+ ShardTestKit kit = new ShardTestKit(getSystem());
+
+ ShardIdentifier leaderId = newShardId(LOCAL_MEMBER_NAME);
+ ShardIdentifier peerId1 = newShardId(PEER_MEMBER_1_NAME);
+ ShardIdentifier peerId2 = newShardId(PEER_MEMBER_2_NAME);
+
+ dataStoreContextBuilder.shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(4).
+ shardIsolatedLeaderCheckIntervalInMillis(100000);
+
+ TestActorRef<TestEntityOwnershipShard> peer1 = actorFactory.createTestActor(TestEntityOwnershipShard.props(
+ newShardBuilder(peerId1, peerMap(leaderId.toString(), peerId2.toString()), PEER_MEMBER_1_NAME),
+ actorFactory.createTestActor(MessageCollectorActor.props())), peerId1.toString());
+ peer1.underlyingActor().startDroppingMessagesOfType(ElectionTimeout.class);
+
+ TestActorRef<TestEntityOwnershipShard> peer2 = actorFactory.createTestActor(TestEntityOwnershipShard.props(
+ newShardBuilder(peerId2, peerMap(leaderId.toString(), peerId1.toString()), PEER_MEMBER_2_NAME),
+ actorFactory.createTestActor(MessageCollectorActor.props())), peerId2.toString());
+ peer2.underlyingActor().startDroppingMessagesOfType(ElectionTimeout.class);
+
+ dataStoreContextBuilder = DatastoreContext.newBuilderFrom(dataStoreContextBuilder.build()).
+ shardIsolatedLeaderCheckIntervalInMillis(500);
+
+ TestActorRef<TestEntityOwnershipShard> leader = actorFactory.createTestActor(TestEntityOwnershipShard.props(
+ newShardBuilder(leaderId, peerMap(peerId1.toString(), peerId2.toString()), LOCAL_MEMBER_NAME),
+ actorFactory.createTestActor(MessageCollectorActor.props())), leaderId.toString());
+
+ ShardTestKit.waitUntilLeader(leader);
+
+ // Add listeners on all members
+
+ DOMEntityOwnershipListener leaderListener = mock(DOMEntityOwnershipListener.class,
+ "DOMEntityOwnershipListener-" + LOCAL_MEMBER_NAME);
+ leader.tell(new RegisterListenerLocal(leaderListener, ENTITY_TYPE), kit.getRef());
+ kit.expectMsgClass(SuccessReply.class);
+
+ DOMEntityOwnershipListener peer1Listener = mock(DOMEntityOwnershipListener.class,
+ "DOMEntityOwnershipListener-" + PEER_MEMBER_1_NAME);
+ peer1.tell(new RegisterListenerLocal(peer1Listener, ENTITY_TYPE), kit.getRef());
+ kit.expectMsgClass(SuccessReply.class);
+
+ DOMEntityOwnershipListener peer2Listener = mock(DOMEntityOwnershipListener.class,
+ "DOMEntityOwnershipListener-" + PEER_MEMBER_2_NAME);
+ peer2.tell(new RegisterListenerLocal(peer2Listener, ENTITY_TYPE), kit.getRef());
+ kit.expectMsgClass(SuccessReply.class);
+
+ // Drop the CandidateAdded message to the leader for now.
+
+ leader.underlyingActor().startDroppingMessagesOfType(CandidateAdded.class);
+
+ // Add an entity candidates for the leader. Since we've blocked the CandidateAdded message, it won't be
+ // assigned the owner.
+
+ DOMEntity entity1 = new DOMEntity(ENTITY_TYPE, ENTITY_ID1);
+ leader.tell(new RegisterCandidateLocal(entity1), kit.getRef());
+ kit.expectMsgClass(SuccessReply.class);
+ verifyCommittedEntityCandidate(leader, entity1.getType(), entity1.getIdentifier(), LOCAL_MEMBER_NAME);
+ verifyCommittedEntityCandidate(peer1, entity1.getType(), entity1.getIdentifier(), LOCAL_MEMBER_NAME);
+ verifyCommittedEntityCandidate(peer2, entity1.getType(), entity1.getIdentifier(), LOCAL_MEMBER_NAME);
+
+ DOMEntity entity2 = new DOMEntity(ENTITY_TYPE, ENTITY_ID2);
+ leader.tell(new RegisterCandidateLocal(entity2), kit.getRef());
+ kit.expectMsgClass(SuccessReply.class);
+ verifyCommittedEntityCandidate(leader, entity2.getType(), entity2.getIdentifier(), LOCAL_MEMBER_NAME);
+ verifyCommittedEntityCandidate(peer1, entity2.getType(), entity2.getIdentifier(), LOCAL_MEMBER_NAME);
+ verifyCommittedEntityCandidate(peer2, entity2.getType(), entity2.getIdentifier(), LOCAL_MEMBER_NAME);
+
+ // Capture the CandidateAdded messages.
+
+ List<CandidateAdded> candidateAdded = expectMatching(leader.underlyingActor().collectorActor(), CandidateAdded.class, 2);
+
+ // Drop AppendEntries to the followers containing a log entry, which will be for the owner writes after we
+ // forward the CandidateAdded messages to the leader. This will leave the pending owner write tx's uncommitted.
+
+ peer1.underlyingActor().startDroppingMessagesOfType(AppendEntries.class, ae -> ae.getEntries().size() > 0);
+ peer2.underlyingActor().startDroppingMessagesOfType(AppendEntries.class, ae -> ae.getEntries().size() > 0);
+
+ // Now forward the CandidateAdded messages to the leader and wait for it to send out the AppendEntries.
+
+ leader.underlyingActor().stopDroppingMessagesOfType(CandidateAdded.class);
+ leader.tell(candidateAdded.get(0), leader);
+ leader.tell(candidateAdded.get(1), leader);
+
+ expectMatching(peer1.underlyingActor().collectorActor(), AppendEntries.class, 2, ae -> ae.getEntries().size() > 0);
+
+ // Verify no owner assigned.
+
+ verifyNoOwnerSet(leader, entity1.getType(), entity1.getIdentifier());
+ verifyNoOwnerSet(leader, entity2.getType(), entity2.getIdentifier());
+
+ // Isolate the leader by dropping AppendEntries to the followers and incoming messages from the followers.
+
+ leader.underlyingActor().startDroppingMessagesOfType(RequestVote.class);
+ leader.underlyingActor().startDroppingMessagesOfType(AppendEntries.class);
+
+ peer2.underlyingActor().startDroppingMessagesOfType(AppendEntries.class,
+ ae -> ae.getLeaderId().equals(leaderId.toString()));
+ peer1.underlyingActor().startDroppingMessagesOfType(AppendEntries.class);
+
+ // Send PeerDown to the isolated leader - should be no-op since there's no owned entities.
+
+ leader.tell(new PeerDown(peerId1.getMemberName(), peerId1.toString()), ActorRef.noSender());
+ leader.tell(new PeerDown(peerId2.getMemberName(), peerId2.toString()), ActorRef.noSender());
+
+ // Verify the leader transitions to IsolatedLeader.
+
+ verifyRaftState(leader, state -> assertEquals("getRaftState", RaftState.IsolatedLeader.toString(), state.getRaftState()));
+
+ // Send PeerDown to the new leader peer1.
+
+ peer1.tell(new PeerDown(leaderId.getMemberName(), leaderId.toString()), ActorRef.noSender());
+
+ // Make peer1 start an election and become leader by sending the TimeoutNow message.
+
+ peer1.tell(TimeoutNow.INSTANCE, ActorRef.noSender());
+
+ // Verify the peer1 transitions to Leader.
+
+ verifyRaftState(peer1, state -> assertEquals("getRaftState", RaftState.Leader.toString(), state.getRaftState()));
+
+ verifyNoOwnerSet(peer1, entity1.getType(), entity1.getIdentifier());
+ verifyNoOwnerSet(peer2, entity1.getType(), entity2.getIdentifier());
+
+ verifyNoMoreInteractions(peer1Listener);
+ verifyNoMoreInteractions(peer2Listener);
+
+ // Add candidate peer1 candidate for entity2.
+
+ peer1.tell(new RegisterCandidateLocal(entity2), kit.getRef());
+
+ verifyOwner(peer1, entity2.getType(), entity2.getIdentifier(), PEER_MEMBER_1_NAME);
+ verify(peer1Listener, timeout(5000)).ownershipChanged(ownershipChange(entity2, false, true, true));
+ verify(peer2Listener, timeout(5000)).ownershipChanged(ownershipChange(entity2, false, false, true));
+
+ reset(leaderListener, peer1Listener, peer2Listener);
+
+ // Remove the isolation.
+
+ leader.underlyingActor().stopDroppingMessagesOfType(RequestVote.class);
+ leader.underlyingActor().stopDroppingMessagesOfType(AppendEntries.class);
+ peer2.underlyingActor().stopDroppingMessagesOfType(AppendEntries.class);
+ peer1.underlyingActor().stopDroppingMessagesOfType(AppendEntries.class);
+
+ // Previous leader should switch to Follower.
+
+ verifyRaftState(leader, state -> assertEquals("getRaftState", RaftState.Follower.toString(), state.getRaftState()));
+
+ // Send PeerUp to peer1 and peer2.
+
+ peer1.tell(new PeerUp(leaderId.getMemberName(), leaderId.toString()), ActorRef.noSender());
+ peer2.tell(new PeerUp(leaderId.getMemberName(), leaderId.toString()), ActorRef.noSender());
+
+ // The previous leader should become the owner of entity1.
+
+ verifyOwner(leader, entity1.getType(), entity1.getIdentifier(), LOCAL_MEMBER_NAME);
+
+ // The previous leader's DOMEntityOwnershipListener should get 4 total notifications:
+ // - inJeopardy cleared for entity1 (wasOwner=false, isOwner=false, hasOwner=false, inJeopardy=false)
+ // - inJeopardy cleared for entity2 (wasOwner=false, isOwner=false, hasOwner=false, inJeopardy=false)
+ // - local owner granted for entity1 (wasOwner=false, isOwner=true, hasOwner=true, inJeopardy=false)
+ // - remote owner for entity2 (wasOwner=false, isOwner=false, hasOwner=true, inJeopardy=false)
+ verify(leaderListener, timeout(5000).times(4)).ownershipChanged(or(or(ownershipChange(entity1, false, false, false),
+ ownershipChange(entity2, false, false, false)), or(ownershipChange(entity1, false, true, true),
+ ownershipChange(entity2, false, false, true))));
+
+ verify(peer1Listener, timeout(5000)).ownershipChanged(ownershipChange(entity1, false, false, true));
+ verify(peer2Listener, timeout(5000)).ownershipChanged(ownershipChange(entity1, false, false, true));
+
+ // Verify entity2's owner doesn't change.
+
+ Uninterruptibles.sleepUninterruptibly(500, TimeUnit.MILLISECONDS);
+ verifyOwner(peer1, entity2.getType(), entity2.getIdentifier(), PEER_MEMBER_1_NAME);
+
+ verifyNoMoreInteractions(leaderListener);
+ verifyNoMoreInteractions(peer1Listener);
+ verifyNoMoreInteractions(peer2Listener);
+
+ testLog.info("testLeaderIsolationWithPendingCandidateAdded ending");
+ }
+
Code Review / controller.git / commitdiff