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

Example 1 with VoteState

use of org.neo4j.causalclustering.core.consensus.vote.VoteState in project neo4j by neo4j.

the class RaftStateBuilder method build.

public RaftState build() throws IOException {
    StateStorage<TermState> termStore = new InMemoryStateStorage<>(new TermState());
    StateStorage<VoteState> voteStore = new InMemoryStateStorage<>(new VoteState());
    StubMembership membership = new StubMembership(votingMembers, replicationMembers);
    RaftState state = new RaftState(myself, termStore, membership, entryLog, voteStore, new InFlightMap<>(), NullLogProvider.getInstance());
    Collection<RaftMessages.Directed> noMessages = Collections.emptyList();
    List<RaftLogCommand> noLogCommands = Collections.emptyList();
    state.update(new Outcome(null, term, leader, leaderCommit, votedFor, votesForMe, lastLogIndexBeforeWeBecameLeader, followerStates, false, noLogCommands, noMessages, emptySet(), commitIndex, emptySet()));
    return state;
}

Example 2 with VoteState

use of org.neo4j.causalclustering.core.consensus.vote.VoteState in project neo4j by neo4j.

the class RaftStateTest method shouldUpdateCacheState.

@Test
public void shouldUpdateCacheState() throws Exception {
    //Test that updates applied to the raft state will be refelcted in the entry cache.
    //given
    InFlightMap<RaftLogEntry> cache = new InFlightMap<>();
    RaftState raftState = new RaftState(member(0), new InMemoryStateStorage<>(new TermState()), new FakeMembership(), new InMemoryRaftLog(), new InMemoryStateStorage<>(new VoteState()), cache, NullLogProvider.getInstance());
    List<RaftLogCommand> logCommands = new LinkedList<RaftLogCommand>() {

        {
            add(new AppendLogEntry(1, new RaftLogEntry(0L, valueOf(0))));
            add(new AppendLogEntry(2, new RaftLogEntry(0L, valueOf(1))));
            add(new AppendLogEntry(3, new RaftLogEntry(0L, valueOf(2))));
            add(new AppendLogEntry(4, new RaftLogEntry(0L, valueOf(4))));
            add(new TruncateLogCommand(3));
            add(new AppendLogEntry(3, new RaftLogEntry(0L, valueOf(5))));
        }
    };
    Outcome raftTestMemberOutcome = new Outcome(CANDIDATE, 0, null, -1, null, emptySet(), -1, initialFollowerStates(), true, logCommands, emptyOutgoingMessages(), emptySet(), -1, emptySet());
    //when
    raftState.update(raftTestMemberOutcome);
    //then
    assertNotNull(cache.get(1L));
    assertNotNull(cache.get(2L));
    assertNotNull(cache.get(3L));
    assertEquals(valueOf(5), cache.get(3L).content());
    assertNull(cache.get(4L));
}

Example 3 with VoteState

use of org.neo4j.causalclustering.core.consensus.vote.VoteState in project neo4j by neo4j.

the class RaftStateTest method shouldRemoveFollowerStateAfterBecomingLeader.

@Test
public void shouldRemoveFollowerStateAfterBecomingLeader() throws Exception {
    // given
    RaftState raftState = new RaftState(member(0), new InMemoryStateStorage<>(new TermState()), new FakeMembership(), new InMemoryRaftLog(), new InMemoryStateStorage<>(new VoteState()), new InFlightMap<>(), NullLogProvider.getInstance());
    raftState.update(new Outcome(CANDIDATE, 1, null, -1, null, emptySet(), -1, initialFollowerStates(), true, emptyLogCommands(), emptyOutgoingMessages(), emptySet(), -1, emptySet()));
    // when
    raftState.update(new Outcome(CANDIDATE, 1, null, -1, null, emptySet(), -1, new FollowerStates<>(), true, emptyLogCommands(), emptyOutgoingMessages(), emptySet(), -1, emptySet()));
    // then
    assertEquals(0, raftState.followerStates().size());
}