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

Example 11 with InMemoryRaftLog

use of org.neo4j.causalclustering.core.consensus.log.InMemoryRaftLog in project neo4j by neo4j.

the class AppendEntriesRequestTest method shouldTruncateOnReceiptOfConflictingEntry.

@Test
public void shouldTruncateOnReceiptOfConflictingEntry() throws Exception {
    // given
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    RaftState state = raftState().myself(myself).term(5).entryLog(raftLog).build();
    long leaderTerm = state.term() + leaderTermDifference;
    raftLog.append(new RaftLogEntry(state.term() - 1, content()));
    raftLog.append(new RaftLogEntry(state.term() - 1, content()));
    // when
    long previousIndex = raftLog.appendIndex() - 1;
    Outcome outcome = role.handler.handle(appendEntriesRequest().from(leader).leaderTerm(leaderTerm).prevLogIndex(previousIndex).prevLogTerm(raftLog.readEntryTerm(previousIndex)).logEntry(new RaftLogEntry(leaderTerm, content())).build(), state, log());
    // then
    assertTrue(((Response) messageFor(outcome, leader)).success());
    assertThat(outcome.getLogCommands(), hasItem(new TruncateLogCommand(1)));
}

Example 12 with InMemoryRaftLog

use of org.neo4j.causalclustering.core.consensus.log.InMemoryRaftLog in project neo4j by neo4j.

the class AppendEntriesRequestTest method bootstrappedLog.

private RaftLog bootstrappedLog() throws IOException {
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    raftLog.append(new RaftLogEntry(0, content()));
    return raftLog;
}

Example 13 with InMemoryRaftLog

use of org.neo4j.causalclustering.core.consensus.log.InMemoryRaftLog in project neo4j by neo4j.

the class RaftMachineTest method shouldAppendNewLeaderBarrierAfterBecomingLeader.

@Test
public void shouldAppendNewLeaderBarrierAfterBecomingLeader() throws Exception {
    // Given
    FakeClock fakeClock = Clocks.fakeClock();
    ControlledRenewableTimeoutService timeouts = new ControlledRenewableTimeoutService(fakeClock);
    OutboundMessageCollector messages = new OutboundMessageCollector();
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    RaftMachine raft = new RaftMachineBuilder(myself, 3, RaftTestMemberSetBuilder.INSTANCE).timeoutService(timeouts).clock(fakeClock).outbound(messages).raftLog(raftLog).build();
    raft.installCoreState(new RaftCoreState(new MembershipEntry(0, asSet(myself, member1, member2))));
    raft.startTimers();
    // When
    timeouts.invokeTimeout(ELECTION);
    raft.handle(voteResponse().from(member1).term(1).grant().build());
    // Then
    assertEquals(new NewLeaderBarrier(), readLogEntry(raftLog, raftLog.appendIndex()).content());
}

Example 14 with InMemoryRaftLog

use of org.neo4j.causalclustering.core.consensus.log.InMemoryRaftLog in project neo4j by neo4j.

the class ComparableRaftStateTest method twoIdenticalStatesShouldBeEqual.

@Test
public void twoIdenticalStatesShouldBeEqual() throws Exception {
    // given
    NullLogProvider logProvider = NullLogProvider.getInstance();
    ComparableRaftState state1 = new ComparableRaftState(member(0), asSet(member(0), member(1), member(2)), asSet(member(0), member(1), member(2)), new InMemoryRaftLog(), new InFlightMap<>(), logProvider);
    ComparableRaftState state2 = new ComparableRaftState(member(0), asSet(member(0), member(1), member(2)), asSet(member(0), member(1), member(2)), new InMemoryRaftLog(), new InFlightMap<>(), logProvider);
    // then
    assertEquals(state1, state2);
}

Example 15 with InMemoryRaftLog

use of org.neo4j.causalclustering.core.consensus.log.InMemoryRaftLog in project neo4j by neo4j.

the class BatchAppendLogEntriesTest method shouldApplyMultipleEntries.

@Test
public void shouldApplyMultipleEntries() throws Exception {
    // given
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    BatchAppendLogEntries batchAppendLogEntries = new BatchAppendLogEntries(0, 0, new RaftLogEntry[] { entryA, entryB, entryC });
    // when
    batchAppendLogEntries.applyTo(raftLog, log);
    // then
    assertEquals(entryA, readLogEntry(raftLog, 0));
    assertEquals(entryB, readLogEntry(raftLog, 1));
    assertEquals(entryC, readLogEntry(raftLog, 2));
    assertEquals(2, raftLog.appendIndex());
}