opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/RaftActorTestKit.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.controller.cluster.raft;
   9
  10 import akka.actor.ActorRef;
  11 import akka.actor.ActorSystem;
  12 import akka.pattern.Patterns;
  13 import akka.testkit.JavaTestKit;
  14 import akka.util.Timeout;
  15 import com.google.common.util.concurrent.Uninterruptibles;
  16 import java.util.concurrent.TimeUnit;
  17 import java.util.concurrent.TimeoutException;
  18 import org.junit.Assert;
  19 import org.opendaylight.controller.cluster.raft.client.messages.FindLeader;
  20 import org.opendaylight.controller.cluster.raft.client.messages.FindLeaderReply;
  21 import scala.concurrent.Await;
  22 import scala.concurrent.Future;
  23 import scala.concurrent.duration.Duration;
  24 import scala.concurrent.duration.FiniteDuration;
  25
  26 public class RaftActorTestKit extends JavaTestKit {
  27     private final ActorRef raftActor;
  28
  29     public RaftActorTestKit(ActorSystem actorSystem, String actorName) {
  30         super(actorSystem);
  31
  32         raftActor = this.getSystem().actorOf(MockRaftActor.builder().id(actorName).props(), actorName);
  33
  34     }
  35
  36
  37     public ActorRef getRaftActor() {
  38         return raftActor;
  39     }
  40
  41     public boolean waitForLogMessage(final Class<?> logEventClass, String message){
  42         // Wait for a specific log message to show up
  43         return
  44             new JavaTestKit.EventFilter<Boolean>(logEventClass
  45             ) {
  46                 @Override
  47                 protected Boolean run() {
  48                     return true;
  49                 }
  50             }.from(raftActor.path().toString())
  51                 .message(message)
  52                 .occurrences(1).exec();
  53
  54
  55     }
  56
  57     protected void waitUntilLeader(){
  58         waitUntilLeader(raftActor);
  59     }
  60
  61     public static void waitUntilLeader(ActorRef actorRef) {
  62         FiniteDuration duration = Duration.create(100, TimeUnit.MILLISECONDS);
  63         for(int i = 0; i < 20 * 5; i++) {
  64             Future<Object> future = Patterns.ask(actorRef, FindLeader.INSTANCE, new Timeout(duration));
  65             try {
  66                 FindLeaderReply resp = (FindLeaderReply) Await.result(future, duration);
  67                 if(resp.getLeaderActor() != null) {
  68                     return;
  69                 }
  70             } catch(TimeoutException e) {
  71             } catch(Exception e) {
  72                 System.err.println("FindLeader threw ex");
  73                 e.printStackTrace();
  74             }
  75
  76
  77             Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
  78         }
  79
  80         Assert.fail("Leader not found for actorRef " + actorRef.path());
  81     }
  82
  83 }