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

Example 16 with InMemoryRaftLog

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

the class BatchAppendLogEntriesTest method shouldApplyFromOffsetOnly.

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

Example 17 with InMemoryRaftLog

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

the class MembershipWaiterTest method shouldReturnImmediatelyIfMemberAndCaughtUp.

@Test
public void shouldReturnImmediatelyIfMemberAndCaughtUp() throws Exception {
    OnDemandJobScheduler jobScheduler = new OnDemandJobScheduler();
    MembershipWaiter waiter = new MembershipWaiter(member(0), jobScheduler, () -> dbHealth, 500, NullLogProvider.getInstance());
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    raftLog.append(new RaftLogEntry(0, valueOf(0)));
    ExposedRaftState raftState = RaftStateBuilder.raftState().votingMembers(member(0)).leaderCommit(0).entryLog(raftLog).commitIndex(0L).build().copy();
    RaftMachine raft = mock(RaftMachine.class);
    when(raft.state()).thenReturn(raftState);
    CompletableFuture<Boolean> future = waiter.waitUntilCaughtUpMember(raft);
    jobScheduler.runJob();
    jobScheduler.runJob();
    future.get(0, NANOSECONDS);
}

Example 18 with InMemoryRaftLog

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

the class AppendEntriesMessageFlowTest method setup.

@Before
public void setup() throws IOException {
    // given
    RaftLog raftLog = new InMemoryRaftLog();
    raftLog.append(new RaftLogEntry(0, new RaftTestGroup(0)));
    raft = new RaftMachineBuilder(myself, 3, RaftTestMemberSetBuilder.INSTANCE).raftLog(raftLog).outbound(outbound).build();
}

Example 19 with InMemoryRaftLog

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

the class AppendEntriesRequestTest method shouldNotCommitAheadOfMatchingHistory.

@Test
public void shouldNotCommitAheadOfMatchingHistory() throws Exception {
    // given
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    RaftState state = raftState().entryLog(raftLog).myself(myself).build();
    long leaderTerm = state.term() + leaderTermDifference;
    RaftLogEntry previouslyAppendedEntry = new RaftLogEntry(leaderTerm, content());
    raftLog.append(previouslyAppendedEntry);
    // when
    Outcome outcome = role.handler.handle(appendEntriesRequest().from(leader).leaderTerm(leaderTerm).prevLogIndex(raftLog.appendIndex() + 1).prevLogTerm(leaderTerm).leaderCommit(0).build(), state, log());
    // then
    assertFalse(((Response) messageFor(outcome, leader)).success());
    assertThat(outcome.getLogCommands(), empty());
}

Example 20 with InMemoryRaftLog

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

the class AppendEntriesRequestTest method shouldAppendNewEntryAndCommitPreviouslyAppendedEntry.

@Test
public void shouldAppendNewEntryAndCommitPreviouslyAppendedEntry() throws Exception {
    // given
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    RaftState state = raftState().entryLog(raftLog).myself(myself).build();
    long leaderTerm = state.term() + leaderTermDifference;
    RaftLogEntry previouslyAppendedEntry = new RaftLogEntry(leaderTerm, content());
    raftLog.append(previouslyAppendedEntry);
    RaftLogEntry newLogEntry = new RaftLogEntry(leaderTerm, content());
    // when
    Outcome outcome = role.handler.handle(appendEntriesRequest().from(leader).leaderTerm(leaderTerm).prevLogIndex(raftLog.appendIndex()).prevLogTerm(leaderTerm).logEntry(newLogEntry).leaderCommit(0).build(), state, log());
    // then
    assertTrue(((Response) messageFor(outcome, leader)).success());
    assertThat(outcome.getCommitIndex(), Matchers.equalTo(0L));
    assertThat(outcome.getLogCommands(), hasItem(new BatchAppendLogEntries(1, 0, new RaftLogEntry[] { newLogEntry })));
}