Examples with JoinResponse io.atomix.protocols.raft.protocol.JoinResponse used on opensource projects

Example 1 with JoinResponse

use of io.atomix.protocols.raft.protocol.JoinResponse in project atomix by atomix.

the class LeaderRole method onJoin.

@Override
public CompletableFuture<JoinResponse> onJoin(final JoinRequest request) {
    raft.checkThread();
    logRequest(request);
    // See https://groups.google.com/forum/#!topic/raft-dev/t4xj6dJTP6E
    if (configuring() || initializing()) {
        return CompletableFuture.completedFuture(logResponse(JoinResponse.builder().withStatus(RaftResponse.Status.ERROR).build()));
    }
    // If the member is already a known member of the cluster, complete the join successfully.
    if (raft.getCluster().getMember(request.member().nodeId()) != null) {
        return CompletableFuture.completedFuture(logResponse(JoinResponse.builder().withStatus(RaftResponse.Status.OK).withIndex(raft.getCluster().getConfiguration().index()).withTerm(raft.getCluster().getConfiguration().term()).withTime(raft.getCluster().getConfiguration().time()).withMembers(raft.getCluster().getMembers()).build()));
    }
    RaftMember member = request.member();
    // Add the joining member to the members list. If the joining member's type is ACTIVE, join the member in the
    // PROMOTABLE state to allow it to get caught up without impacting the quorum size.
    Collection<RaftMember> members = raft.getCluster().getMembers();
    members.add(new DefaultRaftMember(member.nodeId(), member.getType(), Instant.now()));
    CompletableFuture<JoinResponse> future = new CompletableFuture<>();
    configure(members).whenComplete((index, error) -> {
        if (error == null) {
            future.complete(logResponse(JoinResponse.builder().withStatus(RaftResponse.Status.OK).withIndex(index).withTerm(raft.getCluster().getConfiguration().term()).withTime(raft.getCluster().getConfiguration().time()).withMembers(members).build()));
        } else {
            future.complete(logResponse(JoinResponse.builder().withStatus(RaftResponse.Status.ERROR).withError(RaftError.Type.PROTOCOL_ERROR).build()));
        }
    });
    return future;
}