Examples with ReplicatedString org.neo4j.causalclustering.core.consensus.ReplicatedString used on opensource projects

Example 6 with ReplicatedString

use of org.neo4j.causalclustering.core.consensus.ReplicatedString in project neo4j by neo4j.

the class BatchingMessageHandlerTest method shouldBatchNewEntriesAndHandleOtherMessagesSingularly.

@Test
public void shouldBatchNewEntriesAndHandleOtherMessagesSingularly() throws Exception {
    // given
    BatchingMessageHandler batchHandler = new BatchingMessageHandler(raftStateMachine, QUEUE_SIZE, MAX_BATCH, NullLogProvider.getInstance());
    ReplicatedString contentA = new ReplicatedString("A");
    ReplicatedString contentC = new ReplicatedString("C");
    RaftMessages.ClusterIdAwareMessage messageA = new RaftMessages.ClusterIdAwareMessage(localClusterId, new RaftMessages.NewEntry.Request(null, contentA));
    RaftMessages.ClusterIdAwareMessage messageB = new RaftMessages.ClusterIdAwareMessage(localClusterId, new RaftMessages.Heartbeat(null, 0, 0, 0));
    RaftMessages.ClusterIdAwareMessage messageC = new RaftMessages.ClusterIdAwareMessage(localClusterId, new RaftMessages.NewEntry.Request(null, contentC));
    RaftMessages.ClusterIdAwareMessage messageD = new RaftMessages.ClusterIdAwareMessage(localClusterId, new RaftMessages.Heartbeat(null, 1, 1, 1));
    batchHandler.handle(messageA);
    batchHandler.handle(messageB);
    batchHandler.handle(messageC);
    batchHandler.handle(messageD);
    verifyZeroInteractions(raftStateMachine);
    // when
    batchHandler.run();
    // then
    RaftMessages.NewEntry.BatchRequest batchRequest = new RaftMessages.NewEntry.BatchRequest(2);
    batchRequest.add(contentA);
    batchRequest.add(contentC);
    verify(raftStateMachine).handle(new RaftMessages.ClusterIdAwareMessage(localClusterId, batchRequest));
    verify(raftStateMachine).handle(messageB);
    verify(raftStateMachine).handle(messageD);
}

Example 7 with ReplicatedString

use of org.neo4j.causalclustering.core.consensus.ReplicatedString in project neo4j by neo4j.

the class LeaderTest method leaderShouldCommitOnMajorityResponse.

@Test
public void leaderShouldCommitOnMajorityResponse() throws Exception {
    // given
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    raftLog.append(new RaftLogEntry(0, new ReplicatedString("lalalala")));
    RaftState state = raftState().votingMembers(member1, member2).term(0).lastLogIndexBeforeWeBecameLeader(-1).leader(myself).leaderCommit(-1).entryLog(raftLog).messagesSentToFollower(member1, raftLog.appendIndex() + 1).messagesSentToFollower(member2, raftLog.appendIndex() + 1).build();
    Leader leader = new Leader();
    // when a single instance responds (plus self == 2 out of 3 instances)
    Outcome outcome = leader.handle(new RaftMessages.AppendEntries.Response(member1, 0, true, 0, 0), state, log());
    // then
    assertEquals(0L, outcome.getCommitIndex());
    assertEquals(0L, outcome.getLeaderCommit());
}

Example 8 with ReplicatedString

use of org.neo4j.causalclustering.core.consensus.ReplicatedString in project neo4j by neo4j.

the class LeaderTest method leaderShouldCommitAllPreviouslyAppendedEntriesWhenCommittingLaterEntryInSameTerm.

// TODO move this someplace else, since log no longer holds the commit
@Test
public void leaderShouldCommitAllPreviouslyAppendedEntriesWhenCommittingLaterEntryInSameTerm() throws Exception {
    // given
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    raftLog.append(new RaftLogEntry(0, new ReplicatedString("first!")));
    raftLog.append(new RaftLogEntry(0, new ReplicatedString("second")));
    raftLog.append(new RaftLogEntry(0, new ReplicatedString("third")));
    RaftState state = raftState().votingMembers(myself, member1, member2).term(0).entryLog(raftLog).messagesSentToFollower(member1, raftLog.appendIndex() + 1).messagesSentToFollower(member2, raftLog.appendIndex() + 1).build();
    Leader leader = new Leader();
    // when
    Outcome outcome = leader.handle(new AppendEntries.Response(member1, 0, true, 2, 2), state, log());
    state.update(outcome);
    // then
    assertEquals(2, state.commitIndex());
}