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

Example 1 with ClusterState

use of org.neo4j.causalclustering.core.consensus.explorer.ClusterState in project neo4j by neo4j.

the class DropMessage method advance.

@Override
public ClusterState advance(ClusterState previous) {
    ClusterState newClusterState = new ClusterState(previous);
    Queue<RaftMessages.RaftMessage> inboundQueue = new LinkedList<>(previous.queues.get(member));
    RaftMessages.RaftMessage message = inboundQueue.poll();
    if (message == null) {
        return previous;
    }
    newClusterState.queues.put(member, inboundQueue);
    return newClusterState;
}

Example 2 with ClusterState

use of org.neo4j.causalclustering.core.consensus.explorer.ClusterState in project neo4j by neo4j.

the class HeartbeatTimeout method advance.

@Override
public ClusterState advance(ClusterState previous) throws IOException {
    ClusterState newClusterState = new ClusterState(previous);
    Queue<RaftMessages.RaftMessage> newQueue = new LinkedList<>(previous.queues.get(member));
    newQueue.offer(new RaftMessages.Timeout.Heartbeat(member));
    newClusterState.queues.put(member, newQueue);
    return newClusterState;
}

Example 3 with ClusterState

use of org.neo4j.causalclustering.core.consensus.explorer.ClusterState in project neo4j by neo4j.

the class OutOfOrderDelivery method advance.

@Override
public ClusterState advance(ClusterState previous) {
    ClusterState newClusterState = new ClusterState(previous);
    LinkedList<RaftMessages.RaftMessage> inboundQueue = new LinkedList<>(previous.queues.get(member));
    if (inboundQueue.size() < 2) {
        return previous;
    }
    RaftMessages.RaftMessage message = inboundQueue.poll();
    inboundQueue.add(1, message);
    newClusterState.queues.put(member, inboundQueue);
    return newClusterState;
}

Example 4 with ClusterState

use of org.neo4j.causalclustering.core.consensus.explorer.ClusterState in project neo4j by neo4j.

the class NewEntry method advance.

@Override
public ClusterState advance(ClusterState previous) throws IOException {
    ClusterState newClusterState = new ClusterState(previous);
    Queue<RaftMessages.RaftMessage> newQueue = new LinkedList<>(previous.queues.get(member));
    newQueue.offer(new RaftMessages.NewEntry.Request(member, new ReplicatedString("content")));
    newClusterState.queues.put(member, newQueue);
    return newClusterState;
}

Example 5 with ClusterState

use of org.neo4j.causalclustering.core.consensus.explorer.ClusterState in project neo4j by neo4j.

the class OutOfOrderDeliveryTest method shouldReOrder.

@Test
public void shouldReOrder() throws Exception {
    // given
    ClusterState clusterState = new ClusterState(asSet(member(0)));
    clusterState.queues.get(member(0)).add(new Election(member(0)));
    clusterState.queues.get(member(0)).add(new Heartbeat(member(0)));
    // when
    ClusterState reOrdered = new OutOfOrderDelivery(member(0)).advance(clusterState);
    // then
    assertEquals(new Heartbeat(member(0)), reOrdered.queues.get(member(0)).poll());
    assertEquals(new Election(member(0)), reOrdered.queues.get(member(0)).poll());
}