Examples with AppendEntries org.opendaylight.controller.cluster.raft.messages.AppendEntries used on opensource projects

Example 11 with AppendEntries

use of org.opendaylight.controller.cluster.raft.messages.AppendEntries in project controller by opendaylight.

the class LeaderTest method testHandleAppendEntriesReplyFailureWithFollowersLogTermDifferent.

@Test
public void testHandleAppendEntriesReplyFailureWithFollowersLogTermDifferent() {
    logStart("testHandleAppendEntriesReplyFailureWithFollowersLogTermDifferent");
    MockRaftActorContext leaderActorContext = createActorContextWithFollower();
    ((DefaultConfigParamsImpl) leaderActorContext.getConfigParams()).setHeartBeatInterval(new FiniteDuration(1000, TimeUnit.SECONDS));
    leaderActorContext.setReplicatedLog(new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 2, 2).build());
    long leaderCommitIndex = 1;
    leaderActorContext.setCommitIndex(leaderCommitIndex);
    leaderActorContext.setLastApplied(leaderCommitIndex);
    final ReplicatedLogEntry leadersFirstLogEntry = leaderActorContext.getReplicatedLog().get(0);
    final ReplicatedLogEntry leadersSecondLogEntry = leaderActorContext.getReplicatedLog().get(1);
    MockRaftActorContext followerActorContext = createFollowerActorContextWithLeader();
    followerActorContext.setReplicatedLog(new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 1, 1).build());
    followerActorContext.setCommitIndex(-1);
    followerActorContext.setLastApplied(-1);
    Follower follower = new Follower(followerActorContext);
    followerActor.underlyingActor().setBehavior(follower);
    followerActorContext.setCurrentBehavior(follower);
    leader = new Leader(leaderActorContext);
    AppendEntries appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class);
    final AppendEntriesReply appendEntriesReply = MessageCollectorActor.expectFirstMatching(leaderActor, AppendEntriesReply.class);
    MessageCollectorActor.clearMessages(followerActor);
    MessageCollectorActor.clearMessages(leaderActor);
    // Verify initial AppendEntries sent with the leader's current commit index.
    assertEquals("getLeaderCommit", -1, appendEntries.getLeaderCommit());
    assertEquals("Log entries size", 0, appendEntries.getEntries().size());
    assertEquals("getPrevLogIndex", 0, appendEntries.getPrevLogIndex());
    leaderActor.underlyingActor().setBehavior(leader);
    leaderActorContext.setCurrentBehavior(leader);
    leader.handleMessage(followerActor, appendEntriesReply);
    MessageCollectorActor.expectMatching(leaderActor, AppendEntriesReply.class, 1);
    appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class);
    assertEquals("getLeaderCommit", leaderCommitIndex, appendEntries.getLeaderCommit());
    assertEquals("getPrevLogIndex", -1, appendEntries.getPrevLogIndex());
    assertEquals("Log entries size", 2, appendEntries.getEntries().size());
    assertEquals("First entry index", 0, appendEntries.getEntries().get(0).getIndex());
    assertEquals("First entry term", 2, appendEntries.getEntries().get(0).getTerm());
    assertEquals("First entry data", leadersFirstLogEntry.getData(), appendEntries.getEntries().get(0).getData());
    assertEquals("Second entry index", 1, appendEntries.getEntries().get(1).getIndex());
    assertEquals("Second entry term", 2, appendEntries.getEntries().get(1).getTerm());
    assertEquals("Second entry data", leadersSecondLogEntry.getData(), appendEntries.getEntries().get(1).getData());
    FollowerLogInformation followerInfo = leader.getFollower(FOLLOWER_ID);
    assertEquals("getNextIndex", 2, followerInfo.getNextIndex());
    List<ApplyState> applyStateList = MessageCollectorActor.expectMatching(followerActor, ApplyState.class, 2);
    ApplyState applyState = applyStateList.get(0);
    assertEquals("Follower's first ApplyState index", 0, applyState.getReplicatedLogEntry().getIndex());
    assertEquals("Follower's first ApplyState term", 2, applyState.getReplicatedLogEntry().getTerm());
    assertEquals("Follower's first ApplyState data", leadersFirstLogEntry.getData(), applyState.getReplicatedLogEntry().getData());
    applyState = applyStateList.get(1);
    assertEquals("Follower's second ApplyState index", 1, applyState.getReplicatedLogEntry().getIndex());
    assertEquals("Follower's second ApplyState term", 2, applyState.getReplicatedLogEntry().getTerm());
    assertEquals("Follower's second ApplyState data", leadersSecondLogEntry.getData(), applyState.getReplicatedLogEntry().getData());
    assertEquals("Follower's commit index", 1, followerActorContext.getCommitIndex());
    assertEquals("Follower's lastIndex", 1, followerActorContext.getReplicatedLog().lastIndex());
    assertEquals("Follower's lastTerm", 2, followerActorContext.getReplicatedLog().lastTerm());
}

Example 12 with AppendEntries

use of org.opendaylight.controller.cluster.raft.messages.AppendEntries in project controller by opendaylight.

the class LeaderTest method testHandleReplicateMessageCommitIndexIncrementedBeforeConsensus.

@Test
public void testHandleReplicateMessageCommitIndexIncrementedBeforeConsensus() throws Exception {
    logStart("testHandleReplicateMessageCommitIndexIncrementedBeforeConsensus");
    MockRaftActorContext actorContext = createActorContextWithFollower();
    actorContext.setRaftPolicy(createRaftPolicy(true, true));
    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, (short) 0));
    assertEquals("isFollowerActive", true, leader.getFollower(FOLLOWER_ID).isFollowerActive());
    followerActor.underlyingActor().clear();
    RaftActorBehavior raftBehavior = sendReplicate(actorContext, lastIndex + 1);
    // 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", "foo", appendEntries.getEntries().get(0).getData().toString());
    assertEquals("Commit Index", lastIndex + 1, actorContext.getCommitIndex());
}

Example 13 with AppendEntries

use of org.opendaylight.controller.cluster.raft.messages.AppendEntries in project controller by opendaylight.

the class LeaderTest method testHeartbeatsAreAlwaysSentIfTheHeartbeatIntervalHasElapsed.

@Test
public void testHeartbeatsAreAlwaysSentIfTheHeartbeatIntervalHasElapsed() throws Exception {
    logStart("testHeartbeatsAreAlwaysSentIfTheHeartbeatIntervalHasElapsed");
    MockRaftActorContext actorContext = createActorContextWithFollower();
    actorContext.setConfigParams(new DefaultConfigParamsImpl() {

        @Override
        public FiniteDuration getHeartBeatInterval() {
            return FiniteDuration.apply(100, TimeUnit.MILLISECONDS);
        }
    });
    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, (short) 0));
    assertEquals("isFollowerActive", true, leader.getFollower(FOLLOWER_ID).isFollowerActive());
    followerActor.underlyingActor().clear();
    for (int i = 0; i < 3; i++) {
        Uninterruptibles.sleepUninterruptibly(150, TimeUnit.MILLISECONDS);
        leader.handleMessage(leaderActor, SendHeartBeat.INSTANCE);
    }
    List<AppendEntries> allMessages = MessageCollectorActor.getAllMatching(followerActor, AppendEntries.class);
    assertEquals("The number of append entries collected should be 3", 3, allMessages.size());
}

Example 14 with AppendEntries

use of org.opendaylight.controller.cluster.raft.messages.AppendEntries in project controller by opendaylight.

the class LeaderTest method testSendAppendEntriesOnAnInProgressInstallSnapshot.

@Test
public void testSendAppendEntriesOnAnInProgressInstallSnapshot() throws Exception {
    logStart("testSendAppendEntriesOnAnInProgressInstallSnapshot");
    final MockRaftActorContext actorContext = createActorContextWithFollower();
    Map<String, String> leadersSnapshot = new HashMap<>();
    leadersSnapshot.put("1", "A");
    leadersSnapshot.put("2", "B");
    leadersSnapshot.put("3", "C");
    // clears leaders log
    actorContext.getReplicatedLog().removeFrom(0);
    final int commitIndex = 3;
    final int snapshotIndex = 2;
    final int snapshotTerm = 1;
    // set the snapshot variables in replicatedlog
    actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex);
    actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm);
    actorContext.setCommitIndex(commitIndex);
    // set follower timeout to 2 mins, helps during debugging
    actorContext.setConfigParams(new MockConfigParamsImpl(120000L, 10));
    leader = new Leader(actorContext);
    leader.getFollower(FOLLOWER_ID).setMatchIndex(-1);
    leader.getFollower(FOLLOWER_ID).setNextIndex(0);
    // update follower timestamp
    leader.markFollowerActive(FOLLOWER_ID);
    ByteString bs = toByteString(leadersSnapshot);
    leader.setSnapshotHolder(new SnapshotHolder(Snapshot.create(ByteState.of(bs.toByteArray()), Collections.<ReplicatedLogEntry>emptyList(), commitIndex, snapshotTerm, commitIndex, snapshotTerm, -1, null, null), ByteSource.wrap(bs.toByteArray())));
    LeaderInstallSnapshotState fts = new LeaderInstallSnapshotState(actorContext.getConfigParams().getSnapshotChunkSize(), leader.logName());
    fts.setSnapshotBytes(ByteSource.wrap(bs.toByteArray()));
    leader.getFollower(FOLLOWER_ID).setLeaderInstallSnapshotState(fts);
    // send first chunk and no InstallSnapshotReply received yet
    fts.getNextChunk();
    fts.incrementChunkIndex();
    Uninterruptibles.sleepUninterruptibly(actorContext.getConfigParams().getHeartBeatInterval().toMillis(), TimeUnit.MILLISECONDS);
    leader.handleMessage(leaderActor, SendHeartBeat.INSTANCE);
    AppendEntries ae = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class);
    assertTrue("AppendEntries should be sent with empty entries", ae.getEntries().isEmpty());
    // InstallSnapshotReply received
    fts.markSendStatus(true);
    leader.handleMessage(leaderActor, SendHeartBeat.INSTANCE);
    InstallSnapshot is = MessageCollectorActor.expectFirstMatching(followerActor, InstallSnapshot.class);
    assertEquals(commitIndex, is.getLastIncludedIndex());
}

Example 15 with AppendEntries

use of org.opendaylight.controller.cluster.raft.messages.AppendEntries in project controller by opendaylight.

the class LeaderTest method testSendingReplicateImmediatelyAfterHeartbeatDoesReplicate.

@Test
public void testSendingReplicateImmediatelyAfterHeartbeatDoesReplicate() throws Exception {
    logStart("testSendingReplicateImmediatelyAfterHeartbeatDoesReplicate");
    MockRaftActorContext actorContext = createActorContextWithFollower();
    actorContext.setConfigParams(new DefaultConfigParamsImpl() {

        @Override
        public FiniteDuration getHeartBeatInterval() {
            return FiniteDuration.apply(100, TimeUnit.MILLISECONDS);
        }
    });
    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, (short) 0));
    assertEquals("isFollowerActive", true, leader.getFollower(FOLLOWER_ID).isFollowerActive());
    followerActor.underlyingActor().clear();
    Uninterruptibles.sleepUninterruptibly(150, TimeUnit.MILLISECONDS);
    leader.handleMessage(leaderActor, SendHeartBeat.INSTANCE);
    sendReplicate(actorContext, lastIndex + 1);
    List<AppendEntries> allMessages = MessageCollectorActor.getAllMatching(followerActor, AppendEntries.class);
    assertEquals("The number of append entries collected should be 2", 2, allMessages.size());
    assertEquals(0, allMessages.get(0).getEntries().size());
    assertEquals(1, allMessages.get(1).getEntries().size());
}