2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.controller.cluster.raft.utils;
11 import akka.actor.ActorRef;
12 import akka.actor.UntypedActor;
13 import akka.pattern.Patterns;
14 import akka.util.Timeout;
15 import com.google.common.collect.Lists;
16 import com.google.common.util.concurrent.Uninterruptibles;
17 import java.util.ArrayList;
18 import java.util.List;
19 import java.util.concurrent.TimeUnit;
20 import java.util.concurrent.TimeoutException;
21 import scala.concurrent.Await;
22 import scala.concurrent.Future;
23 import scala.concurrent.duration.Duration;
24 import scala.concurrent.duration.FiniteDuration;
27 public class MessageCollectorActor extends UntypedActor {
28 private static final String ARE_YOU_READY = "ARE_YOU_READY";
30 private final List<Object> messages = new ArrayList<>();
32 @Override public void onReceive(Object message) throws Exception {
33 if(message.equals(ARE_YOU_READY)) {
34 getSender().tell("yes", getSelf());
38 if(message instanceof String){
39 if("get-all-messages".equals(message)){
40 getSender().tell(new ArrayList<>(messages), getSelf());
42 } else if(message != null) {
43 messages.add(message);
51 public static List<Object> getAllMessages(ActorRef actor) throws Exception {
52 FiniteDuration operationDuration = Duration.create(5, TimeUnit.SECONDS);
53 Timeout operationTimeout = new Timeout(operationDuration);
54 Future<Object> future = Patterns.ask(actor, "get-all-messages", operationTimeout);
56 return (List<Object>) Await.result(future, operationDuration);
60 * Get the first message that matches the specified class
65 public static <T> T getFirstMatching(ActorRef actor, Class<T> clazz) throws Exception {
66 for(int i = 0; i < 50; i++) {
67 List<Object> allMessages = getAllMessages(actor);
69 for(Object message : allMessages){
70 if(message.getClass().equals(clazz)){
75 Uninterruptibles.sleepUninterruptibly(100, TimeUnit.MILLISECONDS);
81 public static List<Object> getAllMatching(ActorRef actor, Class<?> clazz) throws Exception {
82 List<Object> allMessages = getAllMessages(actor);
84 List<Object> output = Lists.newArrayList();
86 for(Object message : allMessages){
87 if(message.getClass().equals(clazz)){
95 public static void waitUntilReady(ActorRef actor) throws Exception {
97 FiniteDuration duration = Duration.create(timeout, TimeUnit.MILLISECONDS);
98 for(int i = 0; i < 10; i++) {
100 Await.ready(Patterns.ask(actor, ARE_YOU_READY, timeout), duration);
102 } catch (TimeoutException e) {
106 throw new TimeoutException("Actor not ready in time.");