/** Transitions to a new state. */
protected void transition(RaftServer.State state) {
if (state == type()) return;
switch (state) {
case INACTIVE:
context.transition(InactiveState.class);
break;
case PASSIVE:
context.transition(PassiveState.class);
break;
case FOLLOWER:
context.transition(FollowerState.class);
break;
case CANDIDATE:
context.transition(CandidateState.class);
break;
case LEADER:
context.transition(LeaderState.class);
break;
default:
throw new IllegalStateException();
}
}
@Override
public CompletableFuture<AbstractState> open() {
context.checkThread();
open = true;
return CompletableFuture.completedFuture(null);
}
/** Logs a request. */
protected final <R extends Request> R logRequest(R request) {
LOGGER.debug("{} - Received {}", context.getMember().id(), request);
return request;
}
/** Logs a response. */
protected final <R extends Response> R logResponse(R response) {
LOGGER.debug("{} - Sent {}", context.getMember().id(), response);
return response;
}
@Override
public CompletableFuture<Void> close() {
context.checkThread();
open = false;
return CompletableFuture.completedFuture(null);
}