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

Example 26 with RaftState

use of org.neo4j.causalclustering.core.consensus.state.RaftState in project neo4j by neo4j.

the class AppendEntriesRequestTest method shouldCommitEntry.

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

Example 27 with RaftState

use of org.neo4j.causalclustering.core.consensus.state.RaftState in project neo4j by neo4j.

the class VoteRequestTest method shouldVoteForCandidateInLaterTerm.

@Test
public void shouldVoteForCandidateInLaterTerm() throws Exception {
    // given
    RaftState state = newState();
    // when
    final long candidateTerm = state.term() + 1;
    Outcome outcome = role.handler.handle(voteRequest().from(member1).term(candidateTerm).lastLogIndex(0).lastLogTerm(-1).build(), state, log());
    // then
    assertTrue(((RaftMessages.Vote.Response) messageFor(outcome, member1)).voteGranted());
}

Example 28 with RaftState

use of org.neo4j.causalclustering.core.consensus.state.RaftState in project neo4j by neo4j.

the class VoteRequestTest method shouldDenyForCandidateInPreviousTerm.

@Test
public void shouldDenyForCandidateInPreviousTerm() throws Exception {
    // given
    RaftState state = newState();
    // when
    final long candidateTerm = state.term() - 1;
    Outcome outcome = role.handler.handle(voteRequest().from(member1).term(candidateTerm).lastLogIndex(0).lastLogTerm(-1).build(), state, log());
    // then
    assertFalse(((RaftMessages.Vote.Response) messageFor(outcome, member1)).voteGranted());
    assertEquals(role, outcome.getRole());
}

Example 29 with RaftState

use of org.neo4j.causalclustering.core.consensus.state.RaftState in project neo4j by neo4j.

the class VoteRequestTest method shouldVoteForOnlyOneCandidatePerTerm.

@Test
public void shouldVoteForOnlyOneCandidatePerTerm() throws Exception {
    // given
    RaftState state = newState();
    // when
    final long candidateTerm = state.term() + 1;
    Outcome outcome1 = role.handler.handle(voteRequest().from(member1).term(candidateTerm).lastLogIndex(0).lastLogTerm(-1).build(), state, log());
    state.update(outcome1);
    Outcome outcome2 = role.handler.handle(voteRequest().from(member2).term(candidateTerm).lastLogIndex(0).lastLogTerm(-1).build(), state, log());
    // then
    assertFalse(((RaftMessages.Vote.Response) messageFor(outcome2, member2)).voteGranted());
}

Example 30 with RaftState

use of org.neo4j.causalclustering.core.consensus.state.RaftState in project neo4j by neo4j.

the class HeartbeatTest method shouldNotResultInCommitIfReferringToFutureEntries.

@Test
public void shouldNotResultInCommitIfReferringToFutureEntries() throws Exception {
    InMemoryRaftLog raftLog = new InMemoryRaftLog();
    RaftState state = raftState().myself(myself).entryLog(raftLog).build();
    long leaderTerm = state.term() + leaderTermDifference;
    raftLog.append(new RaftLogEntry(leaderTerm, content()));
    RaftMessages.Heartbeat heartbeat = heartbeat().from(leader).commitIndex(// The leader is talking about committing stuff we don't know about
    raftLog.appendIndex() + 1).commitIndexTerm(// And is in the same term
    leaderTerm).leaderTerm(leaderTerm).build();
    Outcome outcome = role.handler.handle(heartbeat, state, log());
    assertThat(outcome.getLogCommands(), empty());
}