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 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 org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23 import scala.concurrent.Await;
  24 import scala.concurrent.Future;
  25 import scala.concurrent.duration.Duration;
  26 import scala.concurrent.duration.FiniteDuration;
  27
  28 public class RaftActorTestKit extends JavaTestKit {
  29     private static final Logger LOG = LoggerFactory.getLogger(RaftActorTestKit.class);
  30     private final ActorRef raftActor;
  31
  32     public RaftActorTestKit(ActorSystem actorSystem, String actorName) {
  33         super(actorSystem);
  34
  35         raftActor = this.getSystem().actorOf(MockRaftActor.builder().id(actorName).props(), actorName);
  36
  37     }
  38
  39
  40     public ActorRef getRaftActor() {
  41         return raftActor;
  42     }
  43
  44     public boolean waitForLogMessage(final Class<?> logEventClass, String message) {
  45         // Wait for a specific log message to show up
  46         return
  47             new JavaTestKit.EventFilter<Boolean>(logEventClass
  48             ) {
  49                 @Override
  50                 protected Boolean run() {
  51                     return true;
  52                 }
  53             }.from(raftActor.path().toString())
  54                 .message(message)
  55                 .occurrences(1).exec();
  56
  57
  58     }
  59
  60     protected void waitUntilLeader() {
  61         waitUntilLeader(raftActor);
  62     }
  63
  64     @SuppressWarnings("checkstyle:IllegalCatch")
  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 (Exception e) {
  75                 LOG.error("FindLeader failed", e);
  76             }
  77
  78             Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
  79         }
  80
  81         Assert.fail("Leader not found for actorRef " + actorRef.path());
  82     }
  83
  84 }