Examples with MemberId org.neo4j.causalclustering.identity.MemberId used on opensource projects

Example 86 with MemberId

use of org.neo4j.causalclustering.identity.MemberId in project neo4j by neo4j.

the class VoteStateTest method shouldReportNoUpdateWhenVoteStateUnchanged.

@Test
public void shouldReportNoUpdateWhenVoteStateUnchanged() throws Exception {
    // given
    VoteState voteState = new VoteState();
    MemberId member1 = new MemberId(UUID.randomUUID());
    MemberId member2 = new MemberId(UUID.randomUUID());
    // when
    Assert.assertTrue(voteState.update(null, 0));
    Assert.assertFalse(voteState.update(null, 0));
    Assert.assertTrue(voteState.update(member1, 0));
    Assert.assertFalse(voteState.update(member1, 0));
    Assert.assertTrue(voteState.update(member2, 1));
    Assert.assertFalse(voteState.update(member2, 1));
}

Example 87 with MemberId

use of org.neo4j.causalclustering.identity.MemberId in project neo4j by neo4j.

the class LeaderTest method leaderShouldIgnoreSuccessResponseThatIndicatesLaggingWhileLocalStateIndicatesFollowerIsCaughtUp.

@Test
public void leaderShouldIgnoreSuccessResponseThatIndicatesLaggingWhileLocalStateIndicatesFollowerIsCaughtUp() throws Exception {
    // given
    /*
         * A leader who
         * - has an append index of 100
         * - knows about instance 2
         * - assumes that instance 2 is fully caught up
         */
    Leader leader = new Leader();
    MemberId instance2 = member(2);
    int j = 100;
    FollowerState instance2State = createArtificialFollowerState(j);
    ReadableRaftState state = mock(ReadableRaftState.class);
    FollowerStates<MemberId> followerState = new FollowerStates<>();
    followerState = new FollowerStates<>(followerState, instance2, instance2State);
    ReadableRaftLog logMock = mock(ReadableRaftLog.class);
    when(logMock.appendIndex()).thenReturn(100L);
    //  with commit requests in this test
    when(state.commitIndex()).thenReturn(-1L);
    when(state.entryLog()).thenReturn(logMock);
    when(state.followerStates()).thenReturn(followerState);
    // both leader and follower are in the same term
    when(state.term()).thenReturn(4L);
    // when that leader is asked to handle a response from that follower that says that the follower is still
    // missing things
    RaftMessages.AppendEntries.Response response = appendEntriesResponse().success().matchIndex(80).term(4).from(instance2).build();
    Outcome outcome = leader.handle(response, state, mock(Log.class));
    // then the leader should not send anything, since this is a delayed, out of order response to a previous append
    // request
    assertTrue(outcome.getOutgoingMessages().isEmpty());
    // The follower state should not be touched
    FollowerStates<MemberId> updatedFollowerStates = outcome.getFollowerStates();
    assertEquals(100, updatedFollowerStates.get(instance2).getMatchIndex());
}

Example 88 with MemberId

use of org.neo4j.causalclustering.identity.MemberId in project neo4j by neo4j.

the class DumpClusterState method dump.

void dump() throws IOException {
    SimpleStorage<MemberId> memberIdStorage = new SimpleFileStorage<>(fs, clusterStateDirectory, CORE_MEMBER_ID_NAME, new Marshal(), NullLogProvider.getInstance());
    if (memberIdStorage.exists()) {
        MemberId memberId = memberIdStorage.readState();
        out.println(CORE_MEMBER_ID_NAME + ": " + memberId);
    }
    dumpState(LAST_FLUSHED_NAME, new LongIndexMarshal());
    dumpState(LOCK_TOKEN_NAME, new ReplicatedLockTokenState.Marshal(new Marshal()));
    dumpState(ID_ALLOCATION_NAME, new IdAllocationState.Marshal());
    dumpState(SESSION_TRACKER_NAME, new GlobalSessionTrackerState.Marshal(new Marshal()));
    /* raft state */
    dumpState(RAFT_MEMBERSHIP_NAME, new RaftMembershipState.Marshal());
    dumpState(RAFT_TERM_NAME, new TermState.Marshal());
    dumpState(RAFT_VOTE_NAME, new VoteState.Marshal(new Marshal()));
}

Example 89 with MemberId

use of org.neo4j.causalclustering.identity.MemberId in project neo4j by neo4j.

the class EnterpriseCoreEditionModule method createMessageLogger.

private MessageLogger<MemberId> createMessageLogger(Config config, LifeSupport life, MemberId myself) {
    final MessageLogger<MemberId> messageLogger;
    if (config.get(CausalClusteringSettings.raft_messages_log_enable)) {
        File logsDir = config.get(GraphDatabaseSettings.logs_directory);
        messageLogger = life.add(new BetterMessageLogger<>(myself, raftMessagesLog(logsDir)));
    } else {
        messageLogger = new NullMessageLogger<>();
    }
    return messageLogger;
}

Example 90 with MemberId

use of org.neo4j.causalclustering.identity.MemberId in project neo4j by neo4j.

the class ReplicatedLockTokenSerializer method unmarshal.

public static ReplicatedLockTokenRequest unmarshal(ReadableChannel channel) throws IOException, EndOfStreamException {
    int candidateId = channel.getInt();
    MemberId owner = new MemberId.Marshal().unmarshal(channel);
    return new ReplicatedLockTokenRequest(owner, candidateId);
}