X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-akka-raft%2Fsrc%2Ftest%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fraft%2Fbehaviors%2FLeaderTest.java;h=f087793674ec7f304192ec55871379f1adbfc03b;hp=895fe35bff7588526fac71e996e9120968234af2;hb=03e752cbd625921ece92c5281cd4e1a8c81b3210;hpb=87eeb0d62755bf5d6bcfd07d40dd8e0ab86c155e diff --git a/opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/behaviors/LeaderTest.java b/opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/behaviors/LeaderTest.java index 895fe35bff..f087793674 100644 --- a/opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/behaviors/LeaderTest.java +++ b/opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/behaviors/LeaderTest.java @@ -10,6 +10,7 @@ import akka.actor.Terminated; import akka.testkit.JavaTestKit; import akka.testkit.TestActorRef; import com.google.common.base.Optional; +import com.google.common.collect.ImmutableMap; import com.google.common.util.concurrent.Uninterruptibles; import com.google.protobuf.ByteString; import java.io.ByteArrayOutputStream; @@ -19,6 +20,7 @@ import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.concurrent.TimeUnit; +import org.junit.After; import org.junit.Assert; import org.junit.Test; import org.opendaylight.controller.cluster.raft.DefaultConfigParamsImpl; @@ -28,704 +30,666 @@ import org.opendaylight.controller.cluster.raft.RaftActorContext; import org.opendaylight.controller.cluster.raft.RaftState; import org.opendaylight.controller.cluster.raft.ReplicatedLogImplEntry; import org.opendaylight.controller.cluster.raft.SerializationUtils; +import org.opendaylight.controller.cluster.raft.TestActorFactory; import org.opendaylight.controller.cluster.raft.base.messages.ApplyLogEntries; import org.opendaylight.controller.cluster.raft.base.messages.ApplyState; import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshot; -import org.opendaylight.controller.cluster.raft.base.messages.InitiateInstallSnapshot; import org.opendaylight.controller.cluster.raft.base.messages.IsolatedLeaderCheck; import org.opendaylight.controller.cluster.raft.base.messages.Replicate; import org.opendaylight.controller.cluster.raft.base.messages.SendHeartBeat; import org.opendaylight.controller.cluster.raft.base.messages.SendInstallSnapshot; +import org.opendaylight.controller.cluster.raft.behaviors.AbstractLeader.FollowerToSnapshot; import org.opendaylight.controller.cluster.raft.messages.AppendEntries; import org.opendaylight.controller.cluster.raft.messages.AppendEntriesReply; import org.opendaylight.controller.cluster.raft.messages.InstallSnapshot; import org.opendaylight.controller.cluster.raft.messages.InstallSnapshotReply; import org.opendaylight.controller.cluster.raft.messages.RequestVoteReply; -import org.opendaylight.controller.cluster.raft.utils.DoNothingActor; import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor; -import org.opendaylight.controller.protobuff.messages.cluster.raft.AppendEntriesMessages; import org.opendaylight.controller.protobuff.messages.cluster.raft.InstallSnapshotMessages; +import org.slf4j.LoggerFactory; import scala.concurrent.duration.FiniteDuration; public class LeaderTest extends AbstractRaftActorBehaviorTest { - private ActorRef leaderActor = - getSystem().actorOf(Props.create(DoNothingActor.class)); - private ActorRef senderActor = - getSystem().actorOf(Props.create(DoNothingActor.class)); + static final String FOLLOWER_ID = "follower"; - @Test - public void testHandleMessageForUnknownMessage() throws Exception { - new JavaTestKit(getSystem()) {{ - Leader leader = - new Leader(createActorContext()); + private final TestActorFactory actorFactory = new TestActorFactory(getSystem()); - // handle message should return the Leader state when it receives an - // unknown message - RaftActorBehavior behavior = leader.handleMessage(senderActor, "foo"); - Assert.assertTrue(behavior instanceof Leader); - }}; + private final TestActorRef leaderActor = actorFactory.createTestActor( + Props.create(ForwardMessageToBehaviorActor.class), actorFactory.generateActorId("leader")); + + private final TestActorRef followerActor = actorFactory.createTestActor( + Props.create(ForwardMessageToBehaviorActor.class), actorFactory.generateActorId("follower")); + + private Leader leader; + + @After + public void tearDown() throws Exception { + if(leader != null) { + leader.close(); + } + + actorFactory.close(); } + private void logStart(String name) { + LoggerFactory.getLogger(LeaderTest.class).info("Starting " + name); + } @Test - public void testThatLeaderSendsAHeartbeatMessageToAllFollowers() { - new JavaTestKit(getSystem()) {{ + public void testHandleMessageForUnknownMessage() throws Exception { + logStart("testHandleMessageForUnknownMessage"); + + leader = new Leader(createActorContext()); + + // handle message should return the Leader state when it receives an + // unknown message + RaftActorBehavior behavior = leader.handleMessage(followerActor, "foo"); + Assert.assertTrue(behavior instanceof Leader); + } - new Within(duration("1 seconds")) { - protected void run() { + @Test + public void testThatLeaderSendsAHeartbeatMessageToAllFollowers() throws Exception { + logStart("testThatLeaderSendsAHeartbeatMessageToAllFollowers"); - ActorRef followerActor = getTestActor(); + MockRaftActorContext actorContext = createActorContextWithFollower(); - MockRaftActorContext actorContext = (MockRaftActorContext) createActorContext(); + long term = 1; + actorContext.getTermInformation().update(term, ""); - Map peerAddresses = new HashMap<>(); + leader = new Leader(actorContext); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); + // Leader should send an immediate heartbeat with no entries as follower is inactive. + long lastIndex = actorContext.getReplicatedLog().lastIndex(); + AppendEntries appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); + assertEquals("getTerm", term, appendEntries.getTerm()); + assertEquals("getPrevLogIndex", -1, appendEntries.getPrevLogIndex()); + assertEquals("getPrevLogTerm", -1, appendEntries.getPrevLogTerm()); + assertEquals("Entries size", 0, appendEntries.getEntries().size()); - actorContext.setPeerAddresses(peerAddresses); + // The follower would normally reply - simulate that explicitly here. + leader.handleMessage(followerActor, new AppendEntriesReply( + FOLLOWER_ID, term, true, lastIndex - 1, term)); + assertEquals("isFollowerActive", true, leader.getFollower(FOLLOWER_ID).isFollowerActive()); - Leader leader = new Leader(actorContext); - leader.handleMessage(senderActor, new SendHeartBeat()); + followerActor.underlyingActor().clear(); - final String out = - new ExpectMsg(duration("1 seconds"), "match hint") { - // do not put code outside this method, will run afterwards - protected String match(Object in) { - Object msg = fromSerializableMessage(in); - if (msg instanceof AppendEntries) { - if (((AppendEntries)msg).getTerm() == 0) { - return "match"; - } - return null; - } else { - throw noMatch(); - } - } - }.get(); // this extracts the received message + // Sleep for the heartbeat interval so AppendEntries is sent. + Uninterruptibles.sleepUninterruptibly(actorContext.getConfigParams(). + getHeartBeatInterval().toMillis(), TimeUnit.MILLISECONDS); - assertEquals("match", out); + leader.handleMessage(leaderActor, new SendHeartBeat()); - } - }; - }}; + appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); + assertEquals("getPrevLogIndex", lastIndex - 1, appendEntries.getPrevLogIndex()); + assertEquals("getPrevLogTerm", term, appendEntries.getPrevLogTerm()); + assertEquals("Entries size", 1, appendEntries.getEntries().size()); + assertEquals("Entry getIndex", lastIndex, appendEntries.getEntries().get(0).getIndex()); + assertEquals("Entry getTerm", term, appendEntries.getEntries().get(0).getTerm()); } @Test - public void testHandleReplicateMessageSendAppendEntriesToFollower() { - new JavaTestKit(getSystem()) {{ + public void testHandleReplicateMessageSendAppendEntriesToFollower() throws Exception { + logStart("testHandleReplicateMessageSendAppendEntriesToFollower"); - new Within(duration("1 seconds")) { - protected void run() { - - ActorRef followerActor = getTestActor(); - - MockRaftActorContext actorContext = - (MockRaftActorContext) createActorContext(); - - Map peerAddresses = new HashMap<>(); - - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); - - actorContext.setPeerAddresses(peerAddresses); - - Leader leader = new Leader(actorContext); - RaftActorBehavior raftBehavior = leader - .handleMessage(senderActor, new Replicate(null, null, - new MockRaftActorContext.MockReplicatedLogEntry(1, - 100, - new MockRaftActorContext.MockPayload("foo")) - )); - - // State should not change - assertTrue(raftBehavior instanceof Leader); - - final String out = - new ExpectMsg(duration("1 seconds"), "match hint") { - // do not put code outside this method, will run afterwards - protected String match(Object in) { - Object msg = fromSerializableMessage(in); - if (msg instanceof AppendEntries) { - if (((AppendEntries)msg).getTerm() == 0) { - return "match"; - } - return null; - } else { - throw noMatch(); - } - } - }.get(); // this extracts the received message - - assertEquals("match", out); - } - }; - }}; + MockRaftActorContext actorContext = createActorContextWithFollower(); + + long term = 1; + actorContext.getTermInformation().update(term, ""); + + leader = new Leader(actorContext); + + // Leader will send an immediate heartbeat - ignore it. + MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); + + // The follower would normally reply - simulate that explicitly here. + long lastIndex = actorContext.getReplicatedLog().lastIndex(); + leader.handleMessage(followerActor, new AppendEntriesReply( + FOLLOWER_ID, term, true, lastIndex, term)); + assertEquals("isFollowerActive", true, leader.getFollower(FOLLOWER_ID).isFollowerActive()); + + followerActor.underlyingActor().clear(); + + MockRaftActorContext.MockPayload payload = new MockRaftActorContext.MockPayload("foo"); + MockRaftActorContext.MockReplicatedLogEntry newEntry = new MockRaftActorContext.MockReplicatedLogEntry( + 1, lastIndex + 1, payload); + actorContext.getReplicatedLog().append(newEntry); + RaftActorBehavior raftBehavior = leader.handleMessage(leaderActor, + new Replicate(null, null, newEntry)); + + // State should not change + assertTrue(raftBehavior instanceof Leader); + + AppendEntries appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); + assertEquals("getPrevLogIndex", lastIndex, appendEntries.getPrevLogIndex()); + assertEquals("getPrevLogTerm", term, appendEntries.getPrevLogTerm()); + assertEquals("Entries size", 1, appendEntries.getEntries().size()); + assertEquals("Entry getIndex", lastIndex + 1, appendEntries.getEntries().get(0).getIndex()); + assertEquals("Entry getTerm", term, appendEntries.getEntries().get(0).getTerm()); + assertEquals("Entry payload", payload, appendEntries.getEntries().get(0).getData()); } @Test - public void testHandleReplicateMessageWhenThereAreNoFollowers() { - new JavaTestKit(getSystem()) {{ + public void testHandleReplicateMessageWhenThereAreNoFollowers() throws Exception { + logStart("testHandleReplicateMessageWhenThereAreNoFollowers"); - new Within(duration("1 seconds")) { - protected void run() { + MockRaftActorContext actorContext = createActorContext(); - ActorRef raftActor = getTestActor(); + leader = new Leader(actorContext); - MockRaftActorContext actorContext = - new MockRaftActorContext("test", getSystem(), raftActor); + actorContext.setLastApplied(0); - actorContext.getReplicatedLog().removeFrom(0); + long newLogIndex = actorContext.getReplicatedLog().lastIndex() + 1; + long term = actorContext.getTermInformation().getCurrentTerm(); + MockRaftActorContext.MockReplicatedLogEntry newEntry = new MockRaftActorContext.MockReplicatedLogEntry( + term, newLogIndex, new MockRaftActorContext.MockPayload("foo")); - actorContext.setReplicatedLog( - new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 2, 1) - .build()); + actorContext.getReplicatedLog().append(newEntry); - Leader leader = new Leader(actorContext); - RaftActorBehavior raftBehavior = leader - .handleMessage(senderActor, new Replicate(null, "state-id",actorContext.getReplicatedLog().get(1))); + RaftActorBehavior raftBehavior = leader.handleMessage(leaderActor, + new Replicate(leaderActor, "state-id", newEntry)); - // State should not change - assertTrue(raftBehavior instanceof Leader); + // State should not change + assertTrue(raftBehavior instanceof Leader); - assertEquals(1, actorContext.getCommitIndex()); + assertEquals("getCommitIndex", newLogIndex, actorContext.getCommitIndex()); - final String out = - new ExpectMsg(duration("1 seconds"), - "match hint") { - // do not put code outside this method, will run afterwards - protected String match(Object in) { - if (in instanceof ApplyState) { - if (((ApplyState) in).getIdentifier().equals("state-id")) { - return "match"; - } - return null; - } else { - throw noMatch(); - } - } - }.get(); // this extracts the received message + // We should get 2 ApplyState messages - 1 for new log entry and 1 for the previous + // one since lastApplied state is 0. + List applyStateList = MessageCollectorActor.getAllMatching( + leaderActor, ApplyState.class); + assertEquals("ApplyState count", newLogIndex, applyStateList.size()); - assertEquals("match", out); + for(int i = 0; i <= newLogIndex - 1; i++ ) { + ApplyState applyState = applyStateList.get(i); + assertEquals("getIndex", i + 1, applyState.getReplicatedLogEntry().getIndex()); + assertEquals("getTerm", term, applyState.getReplicatedLogEntry().getTerm()); + } - } - }; - }}; + ApplyState last = applyStateList.get((int) newLogIndex - 1); + assertEquals("getData", newEntry.getData(), last.getReplicatedLogEntry().getData()); + assertEquals("getIdentifier", "state-id", last.getIdentifier()); } @Test public void testSendAppendEntriesOnAnInProgressInstallSnapshot() throws Exception { - new JavaTestKit(getSystem()) {{ - ActorRef followerActor = getSystem().actorOf(Props.create(MessageCollectorActor.class)); + logStart("testSendAppendEntriesOnAnInProgressInstallSnapshot"); - Map peerAddresses = new HashMap<>(); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); - - MockRaftActorContext actorContext = - (MockRaftActorContext) createActorContext(leaderActor); - actorContext.setPeerAddresses(peerAddresses); - - Map leadersSnapshot = new HashMap<>(); - leadersSnapshot.put("1", "A"); - leadersSnapshot.put("2", "B"); - leadersSnapshot.put("3", "C"); - - //clears leaders log - actorContext.getReplicatedLog().removeFrom(0); - - final int followersLastIndex = 2; - final int snapshotIndex = 3; - final int newEntryIndex = 4; - final int snapshotTerm = 1; - final int currentTerm = 2; - - // set the snapshot variables in replicatedlog - actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); - actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); - actorContext.setCommitIndex(followersLastIndex); - //set follower timeout to 2 mins, helps during debugging - actorContext.setConfigParams(new MockConfigParamsImpl(120000L, 10)); - - MockLeader leader = new MockLeader(actorContext); - - // new entry - ReplicatedLogImplEntry entry = - new ReplicatedLogImplEntry(newEntryIndex, currentTerm, - new MockRaftActorContext.MockPayload("D")); + MockRaftActorContext actorContext = createActorContextWithFollower(); - //update follower timestamp - leader.markFollowerActive(followerActor.path().toString()); + Map leadersSnapshot = new HashMap<>(); + leadersSnapshot.put("1", "A"); + leadersSnapshot.put("2", "B"); + leadersSnapshot.put("3", "C"); - ByteString bs = toByteString(leadersSnapshot); - leader.setSnapshot(Optional.of(bs)); - leader.createFollowerToSnapshot(followerActor.path().toString(), bs); + //clears leaders log + actorContext.getReplicatedLog().removeFrom(0); - //send first chunk and no InstallSnapshotReply received yet - leader.getFollowerToSnapshot().getNextChunk(); - leader.getFollowerToSnapshot().incrementChunkIndex(); + final int followersLastIndex = 2; + final int snapshotIndex = 3; + final int newEntryIndex = 4; + final int snapshotTerm = 1; + final int currentTerm = 2; - leader.handleMessage(leaderActor, new SendHeartBeat()); + // set the snapshot variables in replicatedlog + actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); + actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); + actorContext.setCommitIndex(followersLastIndex); + //set follower timeout to 2 mins, helps during debugging + actorContext.setConfigParams(new MockConfigParamsImpl(120000L, 10)); - AppendEntriesMessages.AppendEntries aeproto = (AppendEntriesMessages.AppendEntries)MessageCollectorActor.getFirstMatching( - followerActor, AppendEntries.SERIALIZABLE_CLASS); + leader = new Leader(actorContext); - assertNotNull("AppendEntries should be sent even if InstallSnapshotReply is not " + - "received", aeproto); + // new entry + ReplicatedLogImplEntry entry = + new ReplicatedLogImplEntry(newEntryIndex, currentTerm, + new MockRaftActorContext.MockPayload("D")); - AppendEntries ae = (AppendEntries) SerializationUtils.fromSerializable(aeproto); + //update follower timestamp + leader.markFollowerActive(FOLLOWER_ID); - assertTrue("AppendEntries should be sent with empty entries", ae.getEntries().isEmpty()); + ByteString bs = toByteString(leadersSnapshot); + leader.setSnapshot(Optional.of(bs)); + FollowerToSnapshot fts = leader.new FollowerToSnapshot(bs); + leader.setFollowerSnapshot(FOLLOWER_ID, fts); - //InstallSnapshotReply received - leader.getFollowerToSnapshot().markSendStatus(true); + //send first chunk and no InstallSnapshotReply received yet + fts.getNextChunk(); + fts.incrementChunkIndex(); - leader.handleMessage(senderActor, new SendHeartBeat()); + Uninterruptibles.sleepUninterruptibly(actorContext.getConfigParams().getHeartBeatInterval().toMillis(), + TimeUnit.MILLISECONDS); - InstallSnapshotMessages.InstallSnapshot isproto = (InstallSnapshotMessages.InstallSnapshot) - MessageCollectorActor.getFirstMatching(followerActor, - InstallSnapshot.SERIALIZABLE_CLASS); + leader.handleMessage(leaderActor, new SendHeartBeat()); - assertNotNull("Installsnapshot should get called for sending the next chunk of snapshot", - isproto); + AppendEntries aeproto = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); - InstallSnapshot is = (InstallSnapshot) SerializationUtils.fromSerializable(isproto); + AppendEntries ae = (AppendEntries) SerializationUtils.fromSerializable(aeproto); - assertEquals(snapshotIndex, is.getLastIncludedIndex()); + assertTrue("AppendEntries should be sent with empty entries", ae.getEntries().isEmpty()); - }}; - } + //InstallSnapshotReply received + fts.markSendStatus(true); - @Test - public void testSendAppendEntriesSnapshotScenario() { - new JavaTestKit(getSystem()) {{ + leader.handleMessage(leaderActor, new SendHeartBeat()); - ActorRef followerActor = getTestActor(); + InstallSnapshotMessages.InstallSnapshot isproto = MessageCollectorActor.expectFirstMatching(followerActor, + InstallSnapshot.SERIALIZABLE_CLASS); - Map peerAddresses = new HashMap<>(); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); + InstallSnapshot is = (InstallSnapshot) SerializationUtils.fromSerializable(isproto); - MockRaftActorContext actorContext = - (MockRaftActorContext) createActorContext(getRef()); - actorContext.setPeerAddresses(peerAddresses); + assertEquals(snapshotIndex, is.getLastIncludedIndex()); + } - Map leadersSnapshot = new HashMap<>(); - leadersSnapshot.put("1", "A"); - leadersSnapshot.put("2", "B"); - leadersSnapshot.put("3", "C"); + @Test + public void testSendAppendEntriesSnapshotScenario() throws Exception { + logStart("testSendAppendEntriesSnapshotScenario"); - //clears leaders log - actorContext.getReplicatedLog().removeFrom(0); + MockRaftActorContext actorContext = createActorContextWithFollower(); - final int followersLastIndex = 2; - final int snapshotIndex = 3; - final int newEntryIndex = 4; - final int snapshotTerm = 1; - final int currentTerm = 2; + Map leadersSnapshot = new HashMap<>(); + leadersSnapshot.put("1", "A"); + leadersSnapshot.put("2", "B"); + leadersSnapshot.put("3", "C"); - // set the snapshot variables in replicatedlog - actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); - actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); - actorContext.setCommitIndex(followersLastIndex); + //clears leaders log + actorContext.getReplicatedLog().removeFrom(0); - Leader leader = new Leader(actorContext); + final int followersLastIndex = 2; + final int snapshotIndex = 3; + final int newEntryIndex = 4; + final int snapshotTerm = 1; + final int currentTerm = 2; - // new entry - ReplicatedLogImplEntry entry = - new ReplicatedLogImplEntry(newEntryIndex, currentTerm, - new MockRaftActorContext.MockPayload("D")); + // set the snapshot variables in replicatedlog + actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); + actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); + actorContext.setCommitIndex(followersLastIndex); - //update follower timestamp - leader.markFollowerActive(followerActor.path().toString()); + leader = new Leader(actorContext); - // this should invoke a sendinstallsnapshot as followersLastIndex < snapshotIndex - RaftActorBehavior raftBehavior = leader.handleMessage( - senderActor, new Replicate(null, "state-id", entry)); + // Leader will send an immediate heartbeat - ignore it. + MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); - assertTrue(raftBehavior instanceof Leader); + // new entry + ReplicatedLogImplEntry entry = + new ReplicatedLogImplEntry(newEntryIndex, currentTerm, + new MockRaftActorContext.MockPayload("D")); - // we might receive some heartbeat messages, so wait till we InitiateInstallSnapshot - Boolean[] matches = new ReceiveWhile(Boolean.class, duration("2 seconds")) { - @Override - protected Boolean match(Object o) throws Exception { - if (o instanceof InitiateInstallSnapshot) { - return true; - } - return false; - } - }.get(); + //update follower timestamp + leader.markFollowerActive(FOLLOWER_ID); - boolean initiateInitiateInstallSnapshot = false; - for (Boolean b: matches) { - initiateInitiateInstallSnapshot = b | initiateInitiateInstallSnapshot; - } + // this should invoke a sendinstallsnapshot as followersLastIndex < snapshotIndex + RaftActorBehavior raftBehavior = leader.handleMessage( + leaderActor, new Replicate(null, "state-id", entry)); - assertTrue(initiateInitiateInstallSnapshot); - }}; + assertTrue(raftBehavior instanceof Leader); + + MessageCollectorActor.expectFirstMatching(leaderActor, CaptureSnapshot.class); } @Test public void testInitiateInstallSnapshot() throws Exception { - new JavaTestKit(getSystem()) {{ + logStart("testInitiateInstallSnapshot"); - ActorRef leaderActor = getSystem().actorOf(Props.create(MessageCollectorActor.class)); + MockRaftActorContext actorContext = createActorContextWithFollower(); - ActorRef followerActor = getTestActor(); + Map leadersSnapshot = new HashMap<>(); + leadersSnapshot.put("1", "A"); + leadersSnapshot.put("2", "B"); + leadersSnapshot.put("3", "C"); - Map peerAddresses = new HashMap<>(); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); + //clears leaders log + actorContext.getReplicatedLog().removeFrom(0); + final int followersLastIndex = 2; + final int snapshotIndex = 3; + final int newEntryIndex = 4; + final int snapshotTerm = 1; + final int currentTerm = 2; - MockRaftActorContext actorContext = - (MockRaftActorContext) createActorContext(leaderActor); - actorContext.setPeerAddresses(peerAddresses); + // set the snapshot variables in replicatedlog + actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); + actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); + actorContext.setLastApplied(3); + actorContext.setCommitIndex(followersLastIndex); - Map leadersSnapshot = new HashMap<>(); - leadersSnapshot.put("1", "A"); - leadersSnapshot.put("2", "B"); - leadersSnapshot.put("3", "C"); + leader = new Leader(actorContext); - //clears leaders log - actorContext.getReplicatedLog().removeFrom(0); + // Leader will send an immediate heartbeat - ignore it. + MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); - final int followersLastIndex = 2; - final int snapshotIndex = 3; - final int newEntryIndex = 4; - final int snapshotTerm = 1; - final int currentTerm = 2; + // set the snapshot as absent and check if capture-snapshot is invoked. + leader.setSnapshot(Optional.absent()); - // set the snapshot variables in replicatedlog - actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); - actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); - actorContext.setLastApplied(3); - actorContext.setCommitIndex(followersLastIndex); + // new entry + ReplicatedLogImplEntry entry = new ReplicatedLogImplEntry(newEntryIndex, currentTerm, + new MockRaftActorContext.MockPayload("D")); - Leader leader = new Leader(actorContext); - // set the snapshot as absent and check if capture-snapshot is invoked. - leader.setSnapshot(Optional.absent()); + actorContext.getReplicatedLog().append(entry); - // new entry - ReplicatedLogImplEntry entry = - new ReplicatedLogImplEntry(newEntryIndex, currentTerm, - new MockRaftActorContext.MockPayload("D")); + //update follower timestamp + leader.markFollowerActive(FOLLOWER_ID); - actorContext.getReplicatedLog().append(entry); + leader.handleMessage(leaderActor, new Replicate(null, "state-id", entry)); - // this should invoke a sendinstallsnapshot as followersLastIndex < snapshotIndex - RaftActorBehavior raftBehavior = leader.handleMessage( - leaderActor, new InitiateInstallSnapshot()); + CaptureSnapshot cs = MessageCollectorActor.expectFirstMatching(leaderActor, CaptureSnapshot.class); - CaptureSnapshot cs = (CaptureSnapshot) MessageCollectorActor. - getFirstMatching(leaderActor, CaptureSnapshot.class); + assertTrue(cs.isInstallSnapshotInitiated()); + assertEquals(3, cs.getLastAppliedIndex()); + assertEquals(1, cs.getLastAppliedTerm()); + assertEquals(4, cs.getLastIndex()); + assertEquals(2, cs.getLastTerm()); - assertNotNull(cs); + // if an initiate is started again when first is in progress, it shouldnt initiate Capture + leader.handleMessage(leaderActor, new Replicate(null, "state-id", entry)); - assertTrue(cs.isInstallSnapshotInitiated()); - assertEquals(3, cs.getLastAppliedIndex()); - assertEquals(1, cs.getLastAppliedTerm()); - assertEquals(4, cs.getLastIndex()); - assertEquals(2, cs.getLastTerm()); - }}; + List captureSnapshots = MessageCollectorActor.getAllMatching(leaderActor, CaptureSnapshot.class); + assertEquals("CaptureSnapshot should not get invoked when initiate is in progress", 1, captureSnapshots.size()); } @Test - public void testInstallSnapshot() { - new JavaTestKit(getSystem()) {{ + public void testInstallSnapshot() throws Exception { + logStart("testInstallSnapshot"); - ActorRef followerActor = getTestActor(); + MockRaftActorContext actorContext = createActorContextWithFollower(); - Map peerAddresses = new HashMap<>(); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); + Map leadersSnapshot = new HashMap<>(); + leadersSnapshot.put("1", "A"); + leadersSnapshot.put("2", "B"); + leadersSnapshot.put("3", "C"); - MockRaftActorContext actorContext = - (MockRaftActorContext) createActorContext(); - actorContext.setPeerAddresses(peerAddresses); + //clears leaders log + actorContext.getReplicatedLog().removeFrom(0); + final int followersLastIndex = 2; + final int snapshotIndex = 3; + final int snapshotTerm = 1; + final int currentTerm = 2; - Map leadersSnapshot = new HashMap<>(); - leadersSnapshot.put("1", "A"); - leadersSnapshot.put("2", "B"); - leadersSnapshot.put("3", "C"); + // set the snapshot variables in replicatedlog + actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); + actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); + actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString()); + actorContext.setCommitIndex(followersLastIndex); - //clears leaders log - actorContext.getReplicatedLog().removeFrom(0); + leader = new Leader(actorContext); - final int followersLastIndex = 2; - final int snapshotIndex = 3; - final int newEntryIndex = 4; - final int snapshotTerm = 1; - final int currentTerm = 2; + // Ignore initial heartbeat. + MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); - // set the snapshot variables in replicatedlog - actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); - actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); - actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString()); - actorContext.setCommitIndex(followersLastIndex); + RaftActorBehavior raftBehavior = leader.handleMessage(leaderActor, + new SendInstallSnapshot(toByteString(leadersSnapshot))); - Leader leader = new Leader(actorContext); + assertTrue(raftBehavior instanceof Leader); - // new entry - ReplicatedLogImplEntry entry = - new ReplicatedLogImplEntry(newEntryIndex, currentTerm, - new MockRaftActorContext.MockPayload("D")); + // check if installsnapshot gets called with the correct values. - RaftActorBehavior raftBehavior = leader.handleMessage(senderActor, - new SendInstallSnapshot(toByteString(leadersSnapshot))); + InstallSnapshot installSnapshot = (InstallSnapshot) SerializationUtils.fromSerializable( + MessageCollectorActor.expectFirstMatching(followerActor, InstallSnapshotMessages.InstallSnapshot.class)); - assertTrue(raftBehavior instanceof Leader); - - // check if installsnapshot gets called with the correct values. - final String out = - new ExpectMsg(duration("1 seconds"), "match hint") { - // do not put code outside this method, will run afterwards - protected String match(Object in) { - if (in instanceof InstallSnapshotMessages.InstallSnapshot) { - InstallSnapshot is = (InstallSnapshot) - SerializationUtils.fromSerializable(in); - if (is.getData() == null) { - return "InstallSnapshot data is null"; - } - if (is.getLastIncludedIndex() != snapshotIndex) { - return is.getLastIncludedIndex() + "!=" + snapshotIndex; - } - if (is.getLastIncludedTerm() != snapshotTerm) { - return is.getLastIncludedTerm() + "!=" + snapshotTerm; - } - if (is.getTerm() == currentTerm) { - return is.getTerm() + "!=" + currentTerm; - } - - return "match"; - - } else { - return "message mismatch:" + in.getClass(); - } - } - }.get(); // this extracts the received message - - assertEquals("match", out); - }}; + assertNotNull(installSnapshot.getData()); + assertEquals(snapshotIndex, installSnapshot.getLastIncludedIndex()); + assertEquals(snapshotTerm, installSnapshot.getLastIncludedTerm()); + + // FIXME - we don't set the term in the serialized message. + //assertEquals(currentTerm, installSnapshot.getTerm()); } @Test - public void testHandleInstallSnapshotReplyLastChunk() { - new JavaTestKit(getSystem()) {{ + public void testHandleInstallSnapshotReplyLastChunk() throws Exception { + logStart("testHandleInstallSnapshotReplyLastChunk"); - ActorRef followerActor = getTestActor(); + MockRaftActorContext actorContext = createActorContextWithFollower(); - Map peerAddresses = new HashMap<>(); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); - - final int followersLastIndex = 2; - final int snapshotIndex = 3; - final int newEntryIndex = 4; - final int snapshotTerm = 1; - final int currentTerm = 2; - - MockRaftActorContext actorContext = - (MockRaftActorContext) createActorContext(); - actorContext.setPeerAddresses(peerAddresses); - actorContext.setCommitIndex(followersLastIndex); - - MockLeader leader = new MockLeader(actorContext); - - Map leadersSnapshot = new HashMap<>(); - leadersSnapshot.put("1", "A"); - leadersSnapshot.put("2", "B"); - leadersSnapshot.put("3", "C"); - - // set the snapshot variables in replicatedlog - - actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); - actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); - actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString()); - - ByteString bs = toByteString(leadersSnapshot); - leader.setSnapshot(Optional.of(bs)); - leader.createFollowerToSnapshot(followerActor.path().toString(), bs); - while(!leader.getFollowerToSnapshot().isLastChunk(leader.getFollowerToSnapshot().getChunkIndex())) { - leader.getFollowerToSnapshot().getNextChunk(); - leader.getFollowerToSnapshot().incrementChunkIndex(); - } + final int followersLastIndex = 2; + final int snapshotIndex = 3; + final int snapshotTerm = 1; + final int currentTerm = 2; - //clears leaders log - actorContext.getReplicatedLog().removeFrom(0); + actorContext.setCommitIndex(followersLastIndex); - RaftActorBehavior raftBehavior = leader.handleMessage(senderActor, - new InstallSnapshotReply(currentTerm, followerActor.path().toString(), - leader.getFollowerToSnapshot().getChunkIndex(), true)); + leader = new Leader(actorContext); - assertTrue(raftBehavior instanceof Leader); + // Ignore initial heartbeat. + MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); - assertEquals(leader.mapFollowerToSnapshot.size(), 0); - assertEquals(leader.followerToLog.size(), 1); - assertNotNull(leader.followerToLog.get(followerActor.path().toString())); - FollowerLogInformation fli = leader.followerToLog.get(followerActor.path().toString()); - assertEquals(snapshotIndex, fli.getMatchIndex().get()); - assertEquals(snapshotIndex, fli.getMatchIndex().get()); - assertEquals(snapshotIndex + 1, fli.getNextIndex().get()); - }}; - } + Map leadersSnapshot = new HashMap<>(); + leadersSnapshot.put("1", "A"); + leadersSnapshot.put("2", "B"); + leadersSnapshot.put("3", "C"); - @Test - public void testHandleInstallSnapshotReplyWithInvalidChunkIndex() throws Exception { - new JavaTestKit(getSystem()) {{ + // set the snapshot variables in replicatedlog - TestActorRef followerActor = - TestActorRef.create(getSystem(), Props.create(MessageCollectorActor.class), "follower"); + actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); + actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); + actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString()); - Map peerAddresses = new HashMap<>(); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); + ByteString bs = toByteString(leadersSnapshot); + leader.setSnapshot(Optional.of(bs)); + FollowerToSnapshot fts = leader.new FollowerToSnapshot(bs); + leader.setFollowerSnapshot(FOLLOWER_ID, fts); + while(!fts.isLastChunk(fts.getChunkIndex())) { + fts.getNextChunk(); + fts.incrementChunkIndex(); + } - final int followersLastIndex = 2; - final int snapshotIndex = 3; - final int snapshotTerm = 1; - final int currentTerm = 2; + //clears leaders log + actorContext.getReplicatedLog().removeFrom(0); - MockRaftActorContext actorContext = - (MockRaftActorContext) createActorContext(); + RaftActorBehavior raftBehavior = leader.handleMessage(followerActor, + new InstallSnapshotReply(currentTerm, FOLLOWER_ID, fts.getChunkIndex(), true)); - actorContext.setConfigParams(new DefaultConfigParamsImpl(){ - @Override - public int getSnapshotChunkSize() { - return 50; - } - }); - actorContext.setPeerAddresses(peerAddresses); - actorContext.setCommitIndex(followersLastIndex); + assertTrue(raftBehavior instanceof Leader); + + assertEquals(0, leader.followerSnapshotSize()); + assertEquals(1, leader.followerLogSize()); + FollowerLogInformation fli = leader.getFollower(FOLLOWER_ID); + assertNotNull(fli); + assertEquals(snapshotIndex, fli.getMatchIndex()); + assertEquals(snapshotIndex, fli.getMatchIndex()); + assertEquals(snapshotIndex + 1, fli.getNextIndex()); + } + + @Test + public void testSendSnapshotfromInstallSnapshotReply() throws Exception { + logStart("testSendSnapshotfromInstallSnapshotReply"); + + MockRaftActorContext actorContext = createActorContextWithFollower(); - MockLeader leader = new MockLeader(actorContext); + final int followersLastIndex = 2; + final int snapshotIndex = 3; + final int snapshotTerm = 1; + final int currentTerm = 2; - Map leadersSnapshot = new HashMap<>(); - leadersSnapshot.put("1", "A"); - leadersSnapshot.put("2", "B"); - leadersSnapshot.put("3", "C"); + DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl(){ + @Override + public int getSnapshotChunkSize() { + return 50; + } + }; + configParams.setHeartBeatInterval(new FiniteDuration(9, TimeUnit.SECONDS)); + configParams.setIsolatedLeaderCheckInterval(new FiniteDuration(10, TimeUnit.SECONDS)); - // set the snapshot variables in replicatedlog - actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); - actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); - actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString()); + actorContext.setConfigParams(configParams); + actorContext.setCommitIndex(followersLastIndex); - ByteString bs = toByteString(leadersSnapshot); - leader.setSnapshot(Optional.of(bs)); + leader = new Leader(actorContext); + + Map leadersSnapshot = new HashMap<>(); + leadersSnapshot.put("1", "A"); + leadersSnapshot.put("2", "B"); + leadersSnapshot.put("3", "C"); - leader.handleMessage(leaderActor, new SendInstallSnapshot(bs)); + // set the snapshot variables in replicatedlog + actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); + actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); + actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString()); - Object o = MessageCollectorActor.getAllMessages(followerActor).get(0); + ByteString bs = toByteString(leadersSnapshot); + leader.setSnapshot(Optional.of(bs)); - assertTrue(o instanceof InstallSnapshotMessages.InstallSnapshot); + leader.handleMessage(leaderActor, new SendInstallSnapshot(bs)); - InstallSnapshotMessages.InstallSnapshot installSnapshot = (InstallSnapshotMessages.InstallSnapshot) o; + InstallSnapshotMessages.InstallSnapshot installSnapshot = MessageCollectorActor.expectFirstMatching( + followerActor, InstallSnapshotMessages.InstallSnapshot.class); - assertEquals(1, installSnapshot.getChunkIndex()); - assertEquals(3, installSnapshot.getTotalChunks()); + assertEquals(1, installSnapshot.getChunkIndex()); + assertEquals(3, installSnapshot.getTotalChunks()); + followerActor.underlyingActor().clear(); + leader.handleMessage(followerActor, new InstallSnapshotReply(actorContext.getTermInformation().getCurrentTerm(), + FOLLOWER_ID, installSnapshot.getChunkIndex(), true)); - leader.handleMessage(followerActor, new InstallSnapshotReply(actorContext.getTermInformation().getCurrentTerm(), followerActor.path().toString(), -1, false)); + installSnapshot = MessageCollectorActor.expectFirstMatching( + followerActor, InstallSnapshotMessages.InstallSnapshot.class); - leader.handleMessage(leaderActor, new SendHeartBeat()); + assertEquals(2, installSnapshot.getChunkIndex()); + assertEquals(3, installSnapshot.getTotalChunks()); - o = MessageCollectorActor.getAllMessages(followerActor).get(1); + followerActor.underlyingActor().clear(); + leader.handleMessage(followerActor, new InstallSnapshotReply(actorContext.getTermInformation().getCurrentTerm(), + FOLLOWER_ID, installSnapshot.getChunkIndex(), true)); - assertTrue(o instanceof InstallSnapshotMessages.InstallSnapshot); + installSnapshot = MessageCollectorActor.expectFirstMatching( + followerActor, InstallSnapshotMessages.InstallSnapshot.class); - installSnapshot = (InstallSnapshotMessages.InstallSnapshot) o; + // Send snapshot reply one more time and make sure that a new snapshot message should not be sent to follower + followerActor.underlyingActor().clear(); + leader.handleMessage(followerActor, new InstallSnapshotReply(actorContext.getTermInformation().getCurrentTerm(), + FOLLOWER_ID, installSnapshot.getChunkIndex(), true)); - assertEquals(1, installSnapshot.getChunkIndex()); - assertEquals(3, installSnapshot.getTotalChunks()); + installSnapshot = MessageCollectorActor.getFirstMatching( + followerActor, InstallSnapshotMessages.InstallSnapshot.class); - followerActor.tell(PoisonPill.getInstance(), getRef()); - }}; + Assert.assertNull(installSnapshot); } + @Test - public void testHandleSnapshotSendsPreviousChunksHashCodeWhenSendingNextChunk() throws Exception { - new JavaTestKit(getSystem()) { - { + public void testHandleInstallSnapshotReplyWithInvalidChunkIndex() throws Exception{ + logStart("testHandleInstallSnapshotReplyWithInvalidChunkIndex"); - TestActorRef followerActor = - TestActorRef.create(getSystem(), Props.create(MessageCollectorActor.class), "follower"); + MockRaftActorContext actorContext = createActorContextWithFollower(); - Map peerAddresses = new HashMap<>(); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); + final int followersLastIndex = 2; + final int snapshotIndex = 3; + final int snapshotTerm = 1; + final int currentTerm = 2; - final int followersLastIndex = 2; - final int snapshotIndex = 3; - final int snapshotTerm = 1; - final int currentTerm = 2; + actorContext.setConfigParams(new DefaultConfigParamsImpl(){ + @Override + public int getSnapshotChunkSize() { + return 50; + } + }); + + actorContext.setCommitIndex(followersLastIndex); + + leader = new Leader(actorContext); + + Map leadersSnapshot = new HashMap<>(); + leadersSnapshot.put("1", "A"); + leadersSnapshot.put("2", "B"); + leadersSnapshot.put("3", "C"); + + // set the snapshot variables in replicatedlog + actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); + actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); + actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString()); + + ByteString bs = toByteString(leadersSnapshot); + leader.setSnapshot(Optional.of(bs)); - MockRaftActorContext actorContext = - (MockRaftActorContext) createActorContext(); + leader.handleMessage(leaderActor, new SendInstallSnapshot(bs)); - actorContext.setConfigParams(new DefaultConfigParamsImpl() { - @Override - public int getSnapshotChunkSize() { - return 50; - } - }); - actorContext.setPeerAddresses(peerAddresses); - actorContext.setCommitIndex(followersLastIndex); + InstallSnapshotMessages.InstallSnapshot installSnapshot = MessageCollectorActor.expectFirstMatching( + followerActor, InstallSnapshotMessages.InstallSnapshot.class); - MockLeader leader = new MockLeader(actorContext); + assertEquals(1, installSnapshot.getChunkIndex()); + assertEquals(3, installSnapshot.getTotalChunks()); - Map leadersSnapshot = new HashMap<>(); - leadersSnapshot.put("1", "A"); - leadersSnapshot.put("2", "B"); - leadersSnapshot.put("3", "C"); + followerActor.underlyingActor().clear(); - // set the snapshot variables in replicatedlog - actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); - actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); - actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString()); + leader.handleMessage(followerActor, new InstallSnapshotReply(actorContext.getTermInformation().getCurrentTerm(), + FOLLOWER_ID, -1, false)); - ByteString bs = toByteString(leadersSnapshot); - leader.setSnapshot(Optional.of(bs)); + Uninterruptibles.sleepUninterruptibly(actorContext.getConfigParams().getHeartBeatInterval().toMillis(), + TimeUnit.MILLISECONDS); - leader.handleMessage(leaderActor, new SendInstallSnapshot(bs)); + leader.handleMessage(leaderActor, new SendHeartBeat()); + + installSnapshot = MessageCollectorActor.expectFirstMatching( + followerActor, InstallSnapshotMessages.InstallSnapshot.class); + + assertEquals(1, installSnapshot.getChunkIndex()); + assertEquals(3, installSnapshot.getTotalChunks()); + } + + @Test + public void testHandleSnapshotSendsPreviousChunksHashCodeWhenSendingNextChunk() throws Exception { + logStart("testHandleSnapshotSendsPreviousChunksHashCodeWhenSendingNextChunk"); + + MockRaftActorContext actorContext = createActorContextWithFollower(); + + final int followersLastIndex = 2; + final int snapshotIndex = 3; + final int snapshotTerm = 1; + final int currentTerm = 2; + + actorContext.setConfigParams(new DefaultConfigParamsImpl() { + @Override + public int getSnapshotChunkSize() { + return 50; + } + }); - Object o = MessageCollectorActor.getAllMessages(followerActor).get(0); + actorContext.setCommitIndex(followersLastIndex); - assertTrue(o instanceof InstallSnapshotMessages.InstallSnapshot); + leader = new Leader(actorContext); - InstallSnapshotMessages.InstallSnapshot installSnapshot = (InstallSnapshotMessages.InstallSnapshot) o; + Map leadersSnapshot = new HashMap<>(); + leadersSnapshot.put("1", "A"); + leadersSnapshot.put("2", "B"); + leadersSnapshot.put("3", "C"); - assertEquals(1, installSnapshot.getChunkIndex()); - assertEquals(3, installSnapshot.getTotalChunks()); - assertEquals(AbstractLeader.INITIAL_LAST_CHUNK_HASH_CODE, installSnapshot.getLastChunkHashCode()); + // set the snapshot variables in replicatedlog + actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex); + actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm); + actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString()); - int hashCode = installSnapshot.getData().hashCode(); + ByteString bs = toByteString(leadersSnapshot); + leader.setSnapshot(Optional.of(bs)); - leader.handleMessage(followerActor, new InstallSnapshotReply(installSnapshot.getTerm(),followerActor.path().toString(),1,true )); + leader.handleMessage(leaderActor, new SendInstallSnapshot(bs)); - leader.handleMessage(leaderActor, new SendHeartBeat()); + InstallSnapshotMessages.InstallSnapshot installSnapshot = MessageCollectorActor.expectFirstMatching( + followerActor, InstallSnapshotMessages.InstallSnapshot.class); - Uninterruptibles.sleepUninterruptibly(100, TimeUnit.MILLISECONDS); + assertEquals(1, installSnapshot.getChunkIndex()); + assertEquals(3, installSnapshot.getTotalChunks()); + assertEquals(AbstractLeader.INITIAL_LAST_CHUNK_HASH_CODE, installSnapshot.getLastChunkHashCode()); - o = MessageCollectorActor.getAllMessages(followerActor).get(1); + int hashCode = installSnapshot.getData().hashCode(); - assertTrue(o instanceof InstallSnapshotMessages.InstallSnapshot); + followerActor.underlyingActor().clear(); - installSnapshot = (InstallSnapshotMessages.InstallSnapshot) o; + leader.handleMessage(followerActor, new InstallSnapshotReply(installSnapshot.getTerm(), + FOLLOWER_ID, 1, true)); - assertEquals(2, installSnapshot.getChunkIndex()); - assertEquals(3, installSnapshot.getTotalChunks()); - assertEquals(hashCode, installSnapshot.getLastChunkHashCode()); + installSnapshot = MessageCollectorActor.expectFirstMatching( + followerActor, InstallSnapshotMessages.InstallSnapshot.class); - followerActor.tell(PoisonPill.getInstance(), getRef()); - }}; + assertEquals(2, installSnapshot.getChunkIndex()); + assertEquals(3, installSnapshot.getTotalChunks()); + assertEquals(hashCode, installSnapshot.getLastChunkHashCode()); } @Test public void testFollowerToSnapshotLogic() { + logStart("testFollowerToSnapshotLogic"); - MockRaftActorContext actorContext = (MockRaftActorContext) createActorContext(); + MockRaftActorContext actorContext = createActorContext(); actorContext.setConfigParams(new DefaultConfigParamsImpl() { @Override @@ -734,7 +698,7 @@ public class LeaderTest extends AbstractRaftActorBehaviorTest { } }); - MockLeader leader = new MockLeader(actorContext); + leader = new Leader(actorContext); Map leadersSnapshot = new HashMap<>(); leadersSnapshot.put("1", "A"); @@ -744,7 +708,9 @@ public class LeaderTest extends AbstractRaftActorBehaviorTest { ByteString bs = toByteString(leadersSnapshot); byte[] barray = bs.toByteArray(); - leader.createFollowerToSnapshot("followerId", bs); + FollowerToSnapshot fts = leader.new FollowerToSnapshot(bs); + leader.setFollowerSnapshot(FOLLOWER_ID, fts); + assertEquals(bs.size(), barray.length); int chunkIndex=0; @@ -756,31 +722,48 @@ public class LeaderTest extends AbstractRaftActorBehaviorTest { j = barray.length; } - ByteString chunk = leader.getFollowerToSnapshot().getNextChunk(); + ByteString chunk = fts.getNextChunk(); assertEquals("bytestring size not matching for chunk:"+ chunkIndex, j-i, chunk.size()); - assertEquals("chunkindex not matching", chunkIndex, leader.getFollowerToSnapshot().getChunkIndex()); + assertEquals("chunkindex not matching", chunkIndex, fts.getChunkIndex()); - leader.getFollowerToSnapshot().markSendStatus(true); - if (!leader.getFollowerToSnapshot().isLastChunk(chunkIndex)) { - leader.getFollowerToSnapshot().incrementChunkIndex(); + fts.markSendStatus(true); + if (!fts.isLastChunk(chunkIndex)) { + fts.incrementChunkIndex(); } } - assertEquals("totalChunks not matching", chunkIndex, leader.getFollowerToSnapshot().getTotalChunks()); + assertEquals("totalChunks not matching", chunkIndex, fts.getTotalChunks()); } - @Override protected RaftActorBehavior createBehavior( RaftActorContext actorContext) { return new Leader(actorContext); } - @Override protected RaftActorContext createActorContext() { + @Override + protected MockRaftActorContext createActorContext() { return createActorContext(leaderActor); } - protected RaftActorContext createActorContext(ActorRef actorRef) { - return new MockRaftActorContext("test", getSystem(), actorRef); + @Override + protected MockRaftActorContext createActorContext(ActorRef actorRef) { + return createActorContext("leader", actorRef); + } + + private MockRaftActorContext createActorContextWithFollower() { + MockRaftActorContext actorContext = createActorContext(); + actorContext.setPeerAddresses(ImmutableMap.builder().put(FOLLOWER_ID, + followerActor.path().toString()).build()); + return actorContext; + } + + private MockRaftActorContext createActorContext(String id, ActorRef actorRef) { + DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl(); + configParams.setHeartBeatInterval(new FiniteDuration(50, TimeUnit.MILLISECONDS)); + configParams.setElectionTimeoutFactor(100000); + MockRaftActorContext context = new MockRaftActorContext(id, getSystem(), actorRef); + context.setConfigParams(configParams); + return context; } private ByteString toByteString(Map state) { @@ -809,319 +792,265 @@ public class LeaderTest extends AbstractRaftActorBehaviorTest { } public static class ForwardMessageToBehaviorActor extends MessageCollectorActor { - private static AbstractRaftActorBehavior behavior; - - public ForwardMessageToBehaviorActor(){ - - } + AbstractRaftActorBehavior behavior; @Override public void onReceive(Object message) throws Exception { + if(behavior != null) { + behavior.handleMessage(sender(), message); + } + super.onReceive(message); - behavior.handleMessage(sender(), message); } - public static void setBehavior(AbstractRaftActorBehavior behavior){ - ForwardMessageToBehaviorActor.behavior = behavior; + public static Props props() { + return Props.create(ForwardMessageToBehaviorActor.class); } } @Test public void testLeaderCreatedWithCommitIndexLessThanLastIndex() throws Exception { - new JavaTestKit(getSystem()) {{ - - ActorRef leaderActor = getSystem().actorOf(Props.create(MessageCollectorActor.class)); - - MockRaftActorContext leaderActorContext = - new MockRaftActorContext("leader", getSystem(), leaderActor); - - ActorRef followerActor = getSystem().actorOf(Props.create(ForwardMessageToBehaviorActor.class)); + logStart("testLeaderCreatedWithCommitIndexLessThanLastIndex"); - MockRaftActorContext followerActorContext = - new MockRaftActorContext("follower", getSystem(), followerActor); + MockRaftActorContext leaderActorContext = createActorContextWithFollower(); - Follower follower = new Follower(followerActorContext); + MockRaftActorContext followerActorContext = createActorContext(FOLLOWER_ID, followerActor); - ForwardMessageToBehaviorActor.setBehavior(follower); + Follower follower = new Follower(followerActorContext); + followerActor.underlyingActor().behavior = follower; - Map peerAddresses = new HashMap<>(); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); + Map peerAddresses = new HashMap<>(); + peerAddresses.put(FOLLOWER_ID, followerActor.path().toString()); - leaderActorContext.setPeerAddresses(peerAddresses); + leaderActorContext.setPeerAddresses(peerAddresses); - leaderActorContext.getReplicatedLog().removeFrom(0); + leaderActorContext.getReplicatedLog().removeFrom(0); - //create 3 entries - leaderActorContext.setReplicatedLog( + //create 3 entries + leaderActorContext.setReplicatedLog( new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build()); - leaderActorContext.setCommitIndex(1); + leaderActorContext.setCommitIndex(1); - followerActorContext.getReplicatedLog().removeFrom(0); + followerActorContext.getReplicatedLog().removeFrom(0); - // follower too has the exact same log entries and has the same commit index - followerActorContext.setReplicatedLog( + // follower too has the exact same log entries and has the same commit index + followerActorContext.setReplicatedLog( new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build()); - followerActorContext.setCommitIndex(1); - - Leader leader = new Leader(leaderActorContext); - leader.markFollowerActive(followerActor.path().toString()); - - leader.handleMessage(leaderActor, new SendHeartBeat()); + followerActorContext.setCommitIndex(1); - AppendEntriesMessages.AppendEntries appendEntries = - (AppendEntriesMessages.AppendEntries) MessageCollectorActor - .getFirstMatching(followerActor, AppendEntriesMessages.AppendEntries.class); + leader = new Leader(leaderActorContext); - assertNotNull(appendEntries); + AppendEntries appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); - assertEquals(1, appendEntries.getLeaderCommit()); - assertEquals(1, appendEntries.getLogEntries(0).getIndex()); - assertEquals(0, appendEntries.getPrevLogIndex()); + assertEquals(1, appendEntries.getLeaderCommit()); + assertEquals(0, appendEntries.getEntries().size()); + assertEquals(0, appendEntries.getPrevLogIndex()); - AppendEntriesReply appendEntriesReply = - (AppendEntriesReply) MessageCollectorActor.getFirstMatching( - leaderActor, AppendEntriesReply.class); + AppendEntriesReply appendEntriesReply = MessageCollectorActor.expectFirstMatching( + leaderActor, AppendEntriesReply.class); - assertNotNull(appendEntriesReply); + assertEquals(2, appendEntriesReply.getLogLastIndex()); + assertEquals(1, appendEntriesReply.getLogLastTerm()); - // follower returns its next index - assertEquals(2, appendEntriesReply.getLogLastIndex()); - assertEquals(1, appendEntriesReply.getLogLastTerm()); + // follower returns its next index + assertEquals(2, appendEntriesReply.getLogLastIndex()); + assertEquals(1, appendEntriesReply.getLogLastTerm()); - }}; + follower.close(); } - @Test public void testLeaderCreatedWithCommitIndexLessThanFollowersCommitIndex() throws Exception { - new JavaTestKit(getSystem()) {{ + logStart("testLeaderCreatedWithCommitIndexLessThanFollowersCommitIndex"); - ActorRef leaderActor = getSystem().actorOf(Props.create(MessageCollectorActor.class)); + MockRaftActorContext leaderActorContext = createActorContext(); - MockRaftActorContext leaderActorContext = - new MockRaftActorContext("leader", getSystem(), leaderActor); + MockRaftActorContext followerActorContext = createActorContext(FOLLOWER_ID, followerActor); - ActorRef followerActor = getSystem().actorOf( - Props.create(ForwardMessageToBehaviorActor.class)); + Follower follower = new Follower(followerActorContext); + followerActor.underlyingActor().behavior = follower; - MockRaftActorContext followerActorContext = - new MockRaftActorContext("follower", getSystem(), followerActor); + Map peerAddresses = new HashMap<>(); + peerAddresses.put(FOLLOWER_ID, followerActor.path().toString()); - Follower follower = new Follower(followerActorContext); + leaderActorContext.setPeerAddresses(peerAddresses); - ForwardMessageToBehaviorActor.setBehavior(follower); + leaderActorContext.getReplicatedLog().removeFrom(0); - Map peerAddresses = new HashMap<>(); - peerAddresses.put(followerActor.path().toString(), - followerActor.path().toString()); + leaderActorContext.setReplicatedLog( + new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build()); - leaderActorContext.setPeerAddresses(peerAddresses); + leaderActorContext.setCommitIndex(1); - leaderActorContext.getReplicatedLog().removeFrom(0); + followerActorContext.getReplicatedLog().removeFrom(0); - leaderActorContext.setReplicatedLog( + followerActorContext.setReplicatedLog( new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build()); - leaderActorContext.setCommitIndex(1); + // follower has the same log entries but its commit index > leaders commit index + followerActorContext.setCommitIndex(2); - followerActorContext.getReplicatedLog().removeFrom(0); + leader = new Leader(leaderActorContext); - followerActorContext.setReplicatedLog( - new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build()); + // Initial heartbeat + AppendEntries appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); - // follower has the same log entries but its commit index > leaders commit index - followerActorContext.setCommitIndex(2); + assertEquals(1, appendEntries.getLeaderCommit()); + assertEquals(0, appendEntries.getEntries().size()); + assertEquals(0, appendEntries.getPrevLogIndex()); - Leader leader = new Leader(leaderActorContext); - leader.markFollowerActive(followerActor.path().toString()); + AppendEntriesReply appendEntriesReply = MessageCollectorActor.expectFirstMatching( + leaderActor, AppendEntriesReply.class); - leader.handleMessage(leaderActor, new SendHeartBeat()); + assertEquals(2, appendEntriesReply.getLogLastIndex()); + assertEquals(1, appendEntriesReply.getLogLastTerm()); - AppendEntriesMessages.AppendEntries appendEntries = - (AppendEntriesMessages.AppendEntries) MessageCollectorActor - .getFirstMatching(followerActor, AppendEntriesMessages.AppendEntries.class); + leaderActor.underlyingActor().behavior = leader; + leader.handleMessage(followerActor, appendEntriesReply); - assertNotNull(appendEntries); + leaderActor.underlyingActor().clear(); + followerActor.underlyingActor().clear(); - assertEquals(1, appendEntries.getLeaderCommit()); - assertEquals(1, appendEntries.getLogEntries(0).getIndex()); - assertEquals(0, appendEntries.getPrevLogIndex()); + Uninterruptibles.sleepUninterruptibly(leaderActorContext.getConfigParams().getHeartBeatInterval().toMillis(), + TimeUnit.MILLISECONDS); - AppendEntriesReply appendEntriesReply = - (AppendEntriesReply) MessageCollectorActor.getFirstMatching( - leaderActor, AppendEntriesReply.class); + leader.handleMessage(leaderActor, new SendHeartBeat()); - assertNotNull(appendEntriesReply); + appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); - assertEquals(2, appendEntriesReply.getLogLastIndex()); - assertEquals(1, appendEntriesReply.getLogLastTerm()); + assertEquals(2, appendEntries.getLeaderCommit()); + assertEquals(0, appendEntries.getEntries().size()); + assertEquals(2, appendEntries.getPrevLogIndex()); - }}; - } + appendEntriesReply = MessageCollectorActor.expectFirstMatching(leaderActor, AppendEntriesReply.class); - @Test - public void testHandleAppendEntriesReplyFailure(){ - new JavaTestKit(getSystem()) { - { + assertEquals(2, appendEntriesReply.getLogLastIndex()); + assertEquals(1, appendEntriesReply.getLogLastTerm()); - ActorRef leaderActor = - getSystem().actorOf(Props.create(MessageCollectorActor.class)); + assertEquals(2, followerActorContext.getCommitIndex()); - ActorRef followerActor = - getSystem().actorOf(Props.create(MessageCollectorActor.class)); + follower.close(); + } + @Test + public void testHandleAppendEntriesReplyFailure(){ + logStart("testHandleAppendEntriesReplyFailure"); - MockRaftActorContext leaderActorContext = - new MockRaftActorContext("leader", getSystem(), leaderActor); + MockRaftActorContext leaderActorContext = createActorContextWithFollower(); - Map peerAddresses = new HashMap<>(); - peerAddresses.put("follower-1", - followerActor.path().toString()); + leader = new Leader(leaderActorContext); - leaderActorContext.setPeerAddresses(peerAddresses); + // Send initial heartbeat reply with last index. + leader.handleAppendEntriesReply(followerActor, new AppendEntriesReply(FOLLOWER_ID, 1, true, 10, 1)); - Leader leader = new Leader(leaderActorContext); + FollowerLogInformation followerInfo = leader.getFollower(FOLLOWER_ID); + assertEquals("getNextIndex", 11, followerInfo.getNextIndex()); - AppendEntriesReply reply = new AppendEntriesReply("follower-1", 1, false, 10, 1); + AppendEntriesReply reply = new AppendEntriesReply(FOLLOWER_ID, 1, false, 10, 1); - RaftActorBehavior raftActorBehavior = leader.handleAppendEntriesReply(followerActor, reply); + RaftActorBehavior raftActorBehavior = leader.handleAppendEntriesReply(followerActor, reply); - assertEquals(RaftState.Leader, raftActorBehavior.state()); + assertEquals(RaftState.Leader, raftActorBehavior.state()); - }}; + assertEquals("getNextIndex", 10, followerInfo.getNextIndex()); } @Test public void testHandleAppendEntriesReplySuccess() throws Exception { - new JavaTestKit(getSystem()) { - { - - ActorRef leaderActor = - getSystem().actorOf(Props.create(MessageCollectorActor.class)); - - ActorRef followerActor = - getSystem().actorOf(Props.create(MessageCollectorActor.class)); - + logStart("testHandleAppendEntriesReplySuccess"); - MockRaftActorContext leaderActorContext = - new MockRaftActorContext("leader", getSystem(), leaderActor); + MockRaftActorContext leaderActorContext = createActorContextWithFollower(); - leaderActorContext.setReplicatedLog( - new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build()); - - Map peerAddresses = new HashMap<>(); - peerAddresses.put("follower-1", - followerActor.path().toString()); - - leaderActorContext.setPeerAddresses(peerAddresses); - leaderActorContext.setCommitIndex(1); - leaderActorContext.setLastApplied(1); - leaderActorContext.getTermInformation().update(1, "leader"); - - Leader leader = new Leader(leaderActorContext); + leaderActorContext.setReplicatedLog( + new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build()); - AppendEntriesReply reply = new AppendEntriesReply("follower-1", 1, true, 2, 1); + leaderActorContext.setCommitIndex(1); + leaderActorContext.setLastApplied(1); + leaderActorContext.getTermInformation().update(1, "leader"); - RaftActorBehavior raftActorBehavior = leader.handleAppendEntriesReply(followerActor, reply); + leader = new Leader(leaderActorContext); - assertEquals(RaftState.Leader, raftActorBehavior.state()); + AppendEntriesReply reply = new AppendEntriesReply(FOLLOWER_ID, 1, true, 2, 1); - assertEquals(2, leaderActorContext.getCommitIndex()); + RaftActorBehavior raftActorBehavior = leader.handleAppendEntriesReply(followerActor, reply); - ApplyLogEntries applyLogEntries = - (ApplyLogEntries) MessageCollectorActor.getFirstMatching(leaderActor, - ApplyLogEntries.class); + assertEquals(RaftState.Leader, raftActorBehavior.state()); - assertNotNull(applyLogEntries); + assertEquals(2, leaderActorContext.getCommitIndex()); - assertEquals(2, leaderActorContext.getLastApplied()); + ApplyLogEntries applyLogEntries = MessageCollectorActor.expectFirstMatching( + leaderActor, ApplyLogEntries.class); - assertEquals(2, applyLogEntries.getToIndex()); + assertEquals(2, leaderActorContext.getLastApplied()); - List applyStateList = MessageCollectorActor.getAllMatching(leaderActor, - ApplyState.class); + assertEquals(2, applyLogEntries.getToIndex()); - assertEquals(1,applyStateList.size()); + List applyStateList = MessageCollectorActor.getAllMatching(leaderActor, + ApplyState.class); - ApplyState applyState = (ApplyState) applyStateList.get(0); + assertEquals(1,applyStateList.size()); - assertEquals(2, applyState.getReplicatedLogEntry().getIndex()); + ApplyState applyState = applyStateList.get(0); - }}; + assertEquals(2, applyState.getReplicatedLogEntry().getIndex()); } @Test public void testHandleAppendEntriesReplyUnknownFollower(){ - new JavaTestKit(getSystem()) { - { + logStart("testHandleAppendEntriesReplyUnknownFollower"); - ActorRef leaderActor = - getSystem().actorOf(Props.create(MessageCollectorActor.class)); + MockRaftActorContext leaderActorContext = createActorContext(); - MockRaftActorContext leaderActorContext = - new MockRaftActorContext("leader", getSystem(), leaderActor); + leader = new Leader(leaderActorContext); - Leader leader = new Leader(leaderActorContext); + AppendEntriesReply reply = new AppendEntriesReply("unkown-follower", 1, false, 10, 1); - AppendEntriesReply reply = new AppendEntriesReply("follower-1", 1, false, 10, 1); + RaftActorBehavior raftActorBehavior = leader.handleAppendEntriesReply(followerActor, reply); - RaftActorBehavior raftActorBehavior = leader.handleAppendEntriesReply(getRef(), reply); - - assertEquals(RaftState.Leader, raftActorBehavior.state()); - - }}; + assertEquals(RaftState.Leader, raftActorBehavior.state()); } @Test public void testHandleRequestVoteReply(){ - new JavaTestKit(getSystem()) { - { - - ActorRef leaderActor = - getSystem().actorOf(Props.create(MessageCollectorActor.class)); + logStart("testHandleRequestVoteReply"); - MockRaftActorContext leaderActorContext = - new MockRaftActorContext("leader", getSystem(), leaderActor); + MockRaftActorContext leaderActorContext = createActorContext(); - Leader leader = new Leader(leaderActorContext); + leader = new Leader(leaderActorContext); - RaftActorBehavior raftActorBehavior = leader.handleRequestVoteReply(getRef(), new RequestVoteReply(1, true)); + // Should be a no-op. + RaftActorBehavior raftActorBehavior = leader.handleRequestVoteReply(followerActor, + new RequestVoteReply(1, true)); - assertEquals(RaftState.Leader, raftActorBehavior.state()); + assertEquals(RaftState.Leader, raftActorBehavior.state()); - raftActorBehavior = leader.handleRequestVoteReply(getRef(), new RequestVoteReply(1, false)); + raftActorBehavior = leader.handleRequestVoteReply(followerActor, new RequestVoteReply(1, false)); - assertEquals(RaftState.Leader, raftActorBehavior.state()); - }}; + assertEquals(RaftState.Leader, raftActorBehavior.state()); } @Test public void testIsolatedLeaderCheckNoFollowers() { - new JavaTestKit(getSystem()) {{ - ActorRef leaderActor = getTestActor(); - - MockRaftActorContext leaderActorContext = - new MockRaftActorContext("leader", getSystem(), leaderActor); + logStart("testIsolatedLeaderCheckNoFollowers"); - Map peerAddresses = new HashMap<>(); - leaderActorContext.setPeerAddresses(peerAddresses); + MockRaftActorContext leaderActorContext = createActorContext(); - Leader leader = new Leader(leaderActorContext); - RaftActorBehavior behavior = leader.handleMessage(leaderActor, new IsolatedLeaderCheck()); - Assert.assertTrue(behavior instanceof Leader); - }}; + leader = new Leader(leaderActorContext); + RaftActorBehavior behavior = leader.handleMessage(leaderActor, new IsolatedLeaderCheck()); + Assert.assertTrue(behavior instanceof Leader); } @Test public void testIsolatedLeaderCheckTwoFollowers() throws Exception { + logStart("testIsolatedLeaderCheckTwoFollowers"); + new JavaTestKit(getSystem()) {{ ActorRef followerActor1 = getTestActor(); ActorRef followerActor2 = getTestActor(); - MockRaftActorContext leaderActorContext = (MockRaftActorContext) createActorContext(); + MockRaftActorContext leaderActorContext = createActorContext(); Map peerAddresses = new HashMap<>(); peerAddresses.put("follower-1", followerActor1.path().toString()); @@ -1129,7 +1058,7 @@ public class LeaderTest extends AbstractRaftActorBehaviorTest { leaderActorContext.setPeerAddresses(peerAddresses); - Leader leader = new Leader(leaderActorContext); + leader = new Leader(leaderActorContext); leader.stopIsolatedLeaderCheckSchedule(); leader.markFollowerActive("follower-1"); @@ -1162,33 +1091,89 @@ public class LeaderTest extends AbstractRaftActorBehaviorTest { behavior = leader.handleMessage(leaderActor, new IsolatedLeaderCheck()); Assert.assertTrue("Behavior not instance of IsolatedLeader when majority followers are inactive", behavior instanceof IsolatedLeader); - }}; } - class MockLeader extends Leader { - FollowerToSnapshot fts; + @Test + public void testAppendEntryCallAtEndofAppendEntryReply() throws Exception { + logStart("testAppendEntryCallAtEndofAppendEntryReply"); - public MockLeader(RaftActorContext context){ - super(context); - } + MockRaftActorContext leaderActorContext = createActorContextWithFollower(); - public FollowerToSnapshot getFollowerToSnapshot() { - return fts; - } + DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl(); + //configParams.setHeartBeatInterval(new FiniteDuration(9, TimeUnit.SECONDS)); + configParams.setIsolatedLeaderCheckInterval(new FiniteDuration(10, TimeUnit.SECONDS)); - public void createFollowerToSnapshot(String followerId, ByteString bs ) { - fts = new FollowerToSnapshot(bs); - mapFollowerToSnapshot.put(followerId, fts); + leaderActorContext.setConfigParams(configParams); - } + MockRaftActorContext followerActorContext = createActorContext(FOLLOWER_ID, followerActor); + + followerActorContext.setConfigParams(configParams); + + Follower follower = new Follower(followerActorContext); + followerActor.underlyingActor().behavior = follower; + + leaderActorContext.getReplicatedLog().removeFrom(0); + leaderActorContext.setCommitIndex(-1); + leaderActorContext.setLastApplied(-1); + + followerActorContext.getReplicatedLog().removeFrom(0); + followerActorContext.setCommitIndex(-1); + followerActorContext.setLastApplied(-1); + + leader = new Leader(leaderActorContext); + + AppendEntriesReply appendEntriesReply = MessageCollectorActor.expectFirstMatching( + leaderActor, AppendEntriesReply.class); + + leader.handleMessage(followerActor, appendEntriesReply); + + // Clear initial heartbeat messages + + leaderActor.underlyingActor().clear(); + followerActor.underlyingActor().clear(); + + // create 3 entries + leaderActorContext.setReplicatedLog( + new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build()); + leaderActorContext.setCommitIndex(1); + leaderActorContext.setLastApplied(1); + + Uninterruptibles.sleepUninterruptibly(leaderActorContext.getConfigParams().getHeartBeatInterval().toMillis(), + TimeUnit.MILLISECONDS); + + leader.handleMessage(leaderActor, new SendHeartBeat()); + + AppendEntries appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); + + // Should send first log entry + assertEquals(1, appendEntries.getLeaderCommit()); + assertEquals(0, appendEntries.getEntries().get(0).getIndex()); + assertEquals(-1, appendEntries.getPrevLogIndex()); + + appendEntriesReply = MessageCollectorActor.expectFirstMatching(leaderActor, AppendEntriesReply.class); + + assertEquals(1, appendEntriesReply.getLogLastTerm()); + assertEquals(0, appendEntriesReply.getLogLastIndex()); + + followerActor.underlyingActor().clear(); + + leader.handleAppendEntriesReply(followerActor, appendEntriesReply); + + appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class); + + // Should send second log entry + assertEquals(1, appendEntries.getLeaderCommit()); + assertEquals(1, appendEntries.getEntries().get(0).getIndex()); + + follower.close(); } private class MockConfigParamsImpl extends DefaultConfigParamsImpl { - private long electionTimeOutIntervalMillis; - private int snapshotChunkSize; + private final long electionTimeOutIntervalMillis; + private final int snapshotChunkSize; public MockConfigParamsImpl(long electionTimeOutIntervalMillis, int snapshotChunkSize) { super();