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.FiniteDuration;
  27
  28 public class RaftActorTestKit extends TestKit {
  29     private static final Logger LOG = LoggerFactory.getLogger(RaftActorTestKit.class);
  30     private final ActorRef raftActor;
  31
  32     public RaftActorTestKit(final ActorSystem actorSystem, final String actorName) {
  33         super(actorSystem);
  34         raftActor = this.getSystem().actorOf(MockRaftActor.builder().id(actorName).props(), actorName);
  35     }
  36
  37     public ActorRef getRaftActor() {
  38         return raftActor;
  39     }
  40
  41     public boolean waitForLogMessage(final Class<?> logEventClass, final String message) {
  42         // Wait for a specific log message to show up
  43         return new EventFilter(logEventClass, getSystem()).from(raftActor.path().toString()).message(message)
  44                 .occurrences(1).intercept(() -> Boolean.TRUE);
  45     }
  46
  47     protected void waitUntilLeader() {
  48         waitUntilLeader(raftActor);
  49     }
  50
  51     @SuppressWarnings("checkstyle:IllegalCatch")
  52     public static void waitUntilLeader(final ActorRef actorRef) {
  53         FiniteDuration duration = FiniteDuration.create(100, TimeUnit.MILLISECONDS);
  54         for (int i = 0; i < 20 * 5; i++) {
  55             Future<Object> future = Patterns.ask(actorRef, FindLeader.INSTANCE, new Timeout(duration));
  56             try {
  57                 final Optional<String> maybeLeader = ((FindLeaderReply)Await.result(future, duration)).getLeaderActor();
  58                 if (maybeLeader.isPresent()) {
  59                     return;
  60                 }
  61             } catch (Exception e) {
  62                 LOG.error("FindLeader failed", e);
  63             }
  64
  65             Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
  66         }
  67
  68         Assert.fail("Leader not found for actorRef " + actorRef.path());
  69     }
  70 }