+ @Test
+ public void testOwnershipChanges() throws Exception {
+ ShardTestKit kit = new ShardTestKit(getSystem());
+ TestActorRef<EntityOwnershipShard> shard = actorFactory.createTestActor(newShardProps());
+ kit.waitUntilLeader(shard);
+
+ Entity entity = new Entity(ENTITY_TYPE, ENTITY_ID1);
+ ShardDataTree shardDataTree = shard.underlyingActor().getDataStore();
+
+ // Add a remote candidate
+
+ String remoteMemberName1 = "remoteMember1";
+ writeNode(ENTITY_OWNERS_PATH, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID1, remoteMemberName1), shardDataTree);
+
+ // Register local
+
+ shard.tell(new RegisterCandidateLocal(entity), kit.getRef());
+ kit.expectMsgClass(SuccessReply.class);
+
+ // Verify the remote candidate becomes owner
+
+ verifyCommittedEntityCandidate(shard, ENTITY_TYPE, ENTITY_ID1, remoteMemberName1);
+ verifyCommittedEntityCandidate(shard, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+ verifyOwner(shard, ENTITY_TYPE, ENTITY_ID1, remoteMemberName1);
+
+ // Add another remote candidate and verify ownership doesn't change
+
+ String remoteMemberName2 = "remoteMember2";
+ writeNode(ENTITY_OWNERS_PATH, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID1, remoteMemberName2), shardDataTree);
+
+ verifyCommittedEntityCandidate(shard, ENTITY_TYPE, ENTITY_ID1, remoteMemberName2);
+ Uninterruptibles.sleepUninterruptibly(500, TimeUnit.MILLISECONDS);
+ verifyOwner(shard, ENTITY_TYPE, ENTITY_ID1, remoteMemberName1);
+
+ // Remove the second remote candidate and verify ownership doesn't change
+
+ deleteNode(candidatePath(ENTITY_TYPE, ENTITY_ID1, remoteMemberName2), shardDataTree);
+
+ verifyEntityCandidateRemoved(shard, ENTITY_TYPE, ENTITY_ID1, remoteMemberName2);
+ Uninterruptibles.sleepUninterruptibly(500, TimeUnit.MILLISECONDS);
+ verifyOwner(shard, ENTITY_TYPE, ENTITY_ID1, remoteMemberName1);
+
+ // Remove the first remote candidate and verify the local candidate becomes owner
+
+ deleteNode(candidatePath(ENTITY_TYPE, ENTITY_ID1, remoteMemberName1), shardDataTree);
+
+ verifyEntityCandidateRemoved(shard, ENTITY_TYPE, ENTITY_ID1, remoteMemberName1);
+ verifyOwner(shard, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+
+ // Add the second remote candidate back and verify ownership doesn't change
+
+ writeNode(ENTITY_OWNERS_PATH, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID1, remoteMemberName2), shardDataTree);
+
+ verifyCommittedEntityCandidate(shard, ENTITY_TYPE, ENTITY_ID1, remoteMemberName2);
+ Uninterruptibles.sleepUninterruptibly(500, TimeUnit.MILLISECONDS);
+ verifyOwner(shard, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+
+ // Unregister the local candidate and verify the second remote candidate becomes owner
+
+ shard.tell(new UnregisterCandidateLocal(entity), kit.getRef());
+ kit.expectMsgClass(SuccessReply.class);
+
+ verifyEntityCandidateRemoved(shard, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+ verifyOwner(shard, ENTITY_TYPE, ENTITY_ID1, remoteMemberName2);
+ }
+
+ @Test
+ public void testOwnerChangesOnPeerAvailabilityChanges() throws Exception {
+ ShardTestKit kit = new ShardTestKit(getSystem());
+
+ dataStoreContextBuilder.shardHeartbeatIntervalInMillis(500).shardElectionTimeoutFactor(10000);
+
+ String peerMemberName1 = "peerMember1";
+ String peerMemberName2 = "peerMember2";
+
+ ShardIdentifier leaderId = newShardId(LOCAL_MEMBER_NAME);
+ ShardIdentifier peerId1 = newShardId(peerMemberName1);
+ ShardIdentifier peerId2 = newShardId(peerMemberName2);
+
+ TestActorRef<EntityOwnershipShard> peer1 = actorFactory.createTestActor(newShardProps(peerId1,
+ ImmutableMap.<String, String>builder().put(leaderId.toString(), ""). put(peerId2.toString(), "").build(),
+ peerMemberName1, EntityOwnerSelectionStrategyConfig.newBuilder().build()).withDispatcher(Dispatchers.DefaultDispatcherId()), peerId1.toString());
+
+ TestActorRef<EntityOwnershipShard> peer2 = actorFactory.createTestActor(newShardProps(peerId2,
+ ImmutableMap.<String, String>builder().put(leaderId.toString(), ""). put(peerId1.toString(), "").build(),
+ peerMemberName2, EntityOwnerSelectionStrategyConfig.newBuilder().build()). withDispatcher(Dispatchers.DefaultDispatcherId()), peerId2.toString());
+
+ TestActorRef<EntityOwnershipShard> leader = actorFactory.createTestActor(newShardProps(leaderId,
+ ImmutableMap.<String, String>builder().put(peerId1.toString(), peer1.path().toString()).
+ put(peerId2.toString(), peer2.path().toString()).build(), LOCAL_MEMBER_NAME, EntityOwnerSelectionStrategyConfig.newBuilder().build()).
+ withDispatcher(Dispatchers.DefaultDispatcherId()), leaderId.toString());
+ leader.tell(new ElectionTimeout(), leader);
+
+ kit.waitUntilLeader(leader);
+
+ // Send PeerDown and PeerUp with no entities
+
+ leader.tell(new PeerDown(peerMemberName2, peerId2.toString()), ActorRef.noSender());
+ leader.tell(new PeerUp(peerMemberName2, peerId2.toString()), ActorRef.noSender());
+
+ // Add candidates for entity1 with the local leader as the owner
+
+ leader.tell(new RegisterCandidateLocal(new Entity(ENTITY_TYPE, ENTITY_ID1)), kit.getRef());
+ kit.expectMsgClass(SuccessReply.class);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID1, peerMemberName2), kit);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID1, peerMemberName2);
+
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID1, peerMemberName1), kit);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID1, peerMemberName1);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+
+ // Add candidates for entity2 with peerMember2 as the owner
+
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID2, peerMemberName2), kit);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName2);
+
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID2, peerMemberName1), kit);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName1);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName2);
+
+ // Add candidates for entity3 with peerMember2 as the owner.
+
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID3, peerMemberName2), kit);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID3, peerMemberName2);
+
+ leader.tell(new RegisterCandidateLocal(new Entity(ENTITY_TYPE, ENTITY_ID3)), kit.getRef());
+ kit.expectMsgClass(SuccessReply.class);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID3, LOCAL_MEMBER_NAME);
+
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID3, peerMemberName1), kit);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID3, peerMemberName1);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID3, peerMemberName2);
+
+ // Add only candidate peerMember2 for entity4.
+
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID4, peerMemberName2), kit);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID4, peerMemberName2);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID4, peerMemberName2);
+
+ // Add only candidate peerMember1 for entity5.
+
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID5, peerMemberName1), kit);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID5, peerMemberName1);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID5, peerMemberName1);
+
+ // Kill peerMember2 and send PeerDown - the entities (2, 3, 4) owned by peerMember2 should get a new
+ // owner selected
+
+ kit.watch(peer2);
+ peer2.tell(PoisonPill.getInstance(), ActorRef.noSender());
+ kit.expectMsgClass(JavaTestKit.duration("5 seconds"), Terminated.class);
+ kit.unwatch(peer2);
+
+ leader.tell(new PeerDown(peerMemberName2, peerId2.toString()), ActorRef.noSender());
+ // Send PeerDown again - should be noop
+ leader.tell(new PeerDown(peerMemberName2, peerId2.toString()), ActorRef.noSender());
+ peer1.tell(new PeerDown(peerMemberName2, peerId2.toString()), ActorRef.noSender());
+
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID4, ""); // no other candidates so should clear
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID3, LOCAL_MEMBER_NAME);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName1);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+
+ verifyNoEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID1, peerMemberName2);
+ verifyNoEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName2);
+ verifyNoEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID3, peerMemberName2);
+ verifyNoEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID4, peerMemberName2);
+
+ // Reinstate peerMember2 - no owners should change
+
+ peer2 = actorFactory.createTestActor(newShardProps(peerId2,
+ ImmutableMap.<String, String>builder().put(leaderId.toString(), ""). put(peerId1.toString(), "").build(),
+ peerMemberName2, EntityOwnerSelectionStrategyConfig.newBuilder().build()). withDispatcher(Dispatchers.DefaultDispatcherId()), peerId2.toString());
+ leader.tell(new PeerUp(peerMemberName2, peerId2.toString()), ActorRef.noSender());
+ // Send PeerUp again - should be noop
+ leader.tell(new PeerUp(peerMemberName2, peerId2.toString()), ActorRef.noSender());
+ peer1.tell(new PeerUp(peerMemberName2, peerId2.toString()), ActorRef.noSender());
+
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID3, LOCAL_MEMBER_NAME);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName1);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID4, "");
+
+ // Add back candidate peerMember2 for entities 1, 2, & 3.
+
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID1, peerMemberName2), kit);
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID2, peerMemberName2), kit);
+ commitModification(leader, entityOwnersWithCandidate(ENTITY_TYPE, ENTITY_ID3, peerMemberName2), kit);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID1, peerMemberName2);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName2);
+ verifyCommittedEntityCandidate(leader, ENTITY_TYPE, ENTITY_ID3, peerMemberName2);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName1);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID3, LOCAL_MEMBER_NAME);
+
+ // Kill peerMember1 and send PeerDown - entity 2 should get a new owner selected
+
+ peer1.tell(PoisonPill.getInstance(), ActorRef.noSender());
+ leader.tell(new PeerDown(peerMemberName1, peerId1.toString()), ActorRef.noSender());
+
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName2);
+
+ // Verify the reinstated peerMember2 is fully synced.
+
+ verifyOwner(peer2, ENTITY_TYPE, ENTITY_ID4, "");
+ verifyOwner(peer2, ENTITY_TYPE, ENTITY_ID3, LOCAL_MEMBER_NAME);
+ verifyOwner(peer2, ENTITY_TYPE, ENTITY_ID2, peerMemberName2);
+ verifyOwner(peer2, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+
+ // Reinstate peerMember1 and verify no owner changes
+
+ peer1 = actorFactory.createTestActor(newShardProps(peerId1,
+ ImmutableMap.<String, String>builder().put(leaderId.toString(), ""). put(peerId2.toString(), "").build(),
+ peerMemberName1, EntityOwnerSelectionStrategyConfig.newBuilder().build()).withDispatcher(Dispatchers.DefaultDispatcherId()), peerId1.toString());
+ leader.tell(new PeerUp(peerMemberName1, peerId1.toString()), ActorRef.noSender());
+
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID4, "");
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID3, LOCAL_MEMBER_NAME);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID2, peerMemberName2);
+ verifyOwner(leader, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+
+ // Verify the reinstated peerMember1 is fully synced.
+
+ verifyOwner(peer1, ENTITY_TYPE, ENTITY_ID4, "");
+ verifyOwner(peer1, ENTITY_TYPE, ENTITY_ID3, LOCAL_MEMBER_NAME);
+ verifyOwner(peer1, ENTITY_TYPE, ENTITY_ID2, peerMemberName2);
+ verifyOwner(peer1, ENTITY_TYPE, ENTITY_ID1, LOCAL_MEMBER_NAME);
+
+ // Kill the local leader and elect peer2 the leader. This should cause a new owner to be selected for
+ // the entities (1 and 3) previously owned by the local leader member.
+
+ peer2.tell(new PeerAddressResolved(peerId1.toString(), peer1.path().toString()), ActorRef.noSender());
+ peer2.tell(new PeerUp(LOCAL_MEMBER_NAME, leaderId.toString()), ActorRef.noSender());
+ peer2.tell(new PeerUp(peerMemberName1, peerId1.toString()), ActorRef.noSender());
+
+ leader.tell(PoisonPill.getInstance(), ActorRef.noSender());
+ peer2.tell(new PeerDown(LOCAL_MEMBER_NAME, leaderId.toString()), ActorRef.noSender());
+ peer2.tell(new ElectionTimeout(), peer2);
+
+ kit.waitUntilLeader(peer2);
+
+ verifyOwner(peer2, ENTITY_TYPE, ENTITY_ID4, "");
+ verifyOwner(peer2, ENTITY_TYPE, ENTITY_ID3, peerMemberName2);
+ verifyOwner(peer2, ENTITY_TYPE, ENTITY_ID2, peerMemberName2);
+ verifyOwner(peer2, ENTITY_TYPE, ENTITY_ID1, peerMemberName2);