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.javadsl.EventFilter;
  14 import akka.testkit.javadsl.TestKit;
  15 import akka.util.Timeout;
  16 import com.google.common.util.concurrent.Uninterruptibles;
  17 import java.util.Optional;
  18 import java.util.concurrent.TimeUnit;
  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 TestKit {
  30     private static final Logger LOG = LoggerFactory.getLogger(RaftActorTestKit.class);
  31     private final ActorRef raftActor;
  32
  33     public RaftActorTestKit(final ActorSystem actorSystem, final String actorName) {
  34         super(actorSystem);
  35         raftActor = this.getSystem().actorOf(MockRaftActor.builder().id(actorName).props(), actorName);
  36     }
  37
  38     public ActorRef getRaftActor() {
  39         return raftActor;
  40     }
  41
  42     public boolean waitForLogMessage(final Class<?> logEventClass, final String message) {
  43         // Wait for a specific log message to show up
  44         return new EventFilter(logEventClass, getSystem()).from(raftActor.path().toString()).message(message)
  45                 .occurrences(1).intercept(() -> Boolean.TRUE);
  46     }
  47
  48     protected void waitUntilLeader() {
  49         waitUntilLeader(raftActor);
  50     }
  51
  52     @SuppressWarnings("checkstyle:IllegalCatch")
  53     public static void waitUntilLeader(final ActorRef actorRef) {
  54         FiniteDuration duration = Duration.create(100, TimeUnit.MILLISECONDS);
  55         for (int i = 0; i < 20 * 5; i++) {
  56             Future<Object> future = Patterns.ask(actorRef, FindLeader.INSTANCE, new Timeout(duration));
  57             try {
  58                 final Optional<String> maybeLeader = ((FindLeaderReply)Await.result(future, duration)).getLeaderActor();
  59                 if (maybeLeader.isPresent()) {
  60                     return;
  61                 }
  62             } catch (Exception e) {
  63                 LOG.error("FindLeader failed", e);
  64             }
  65
  66             Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
  67         }
  68
  69         Assert.fail("Leader not found for actorRef " + actorRef.path());
  70     }
  71 }