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.Optional;
  17 import java.util.concurrent.TimeUnit;
  18 import java.util.concurrent.TimeoutException;
  19 import org.junit.Assert;
  20 import org.opendaylight.controller.cluster.raft.client.messages.FindLeader;
  21 import org.opendaylight.controller.cluster.raft.client.messages.FindLeaderReply;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24 import scala.concurrent.Await;
  25 import scala.concurrent.Future;
  26 import scala.concurrent.duration.Duration;
  27 import scala.concurrent.duration.FiniteDuration;
  28
  29 public class RaftActorTestKit extends JavaTestKit {
  30     private static final Logger LOG = LoggerFactory.getLogger(RaftActorTestKit.class);
  31     private final ActorRef raftActor;
  32
  33     public RaftActorTestKit(ActorSystem actorSystem, String actorName) {
  34         super(actorSystem);
  35
  36         raftActor = this.getSystem().actorOf(MockRaftActor.builder().id(actorName).props(), actorName);
  37
  38     }
  39
  40
  41     public ActorRef getRaftActor() {
  42         return raftActor;
  43     }
  44
  45     public boolean waitForLogMessage(final Class<?> logEventClass, String message){
  46         // Wait for a specific log message to show up
  47         return
  48             new JavaTestKit.EventFilter<Boolean>(logEventClass
  49             ) {
  50                 @Override
  51                 protected Boolean run() {
  52                     return true;
  53                 }
  54             }.from(raftActor.path().toString())
  55                 .message(message)
  56                 .occurrences(1).exec();
  57
  58
  59     }
  60
  61     protected void waitUntilLeader(){
  62         waitUntilLeader(raftActor);
  63     }
  64
  65     public static void waitUntilLeader(ActorRef actorRef) {
  66         FiniteDuration duration = Duration.create(100, TimeUnit.MILLISECONDS);
  67         for(int i = 0; i < 20 * 5; i++) {
  68             Future<Object> future = Patterns.ask(actorRef, FindLeader.INSTANCE, new Timeout(duration));
  69             try {
  70                 final Optional<String> maybeLeader = ((FindLeaderReply)Await.result(future, duration)).getLeaderActor();
  71                 if (maybeLeader.isPresent()) {
  72                     return;
  73                 }
  74             } catch(TimeoutException e) {
  75             } catch(Exception e) {
  76                 LOG.error("FindLeader failed", e);
  77             }
  78
  79             Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
  80         }
  81
  82         Assert.fail("Leader not found for actorRef " + actorRef.path());
  83     }
  84
  85 }