opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/ShardTestKit.java

   1 /*
   2  * Copyright (c) 2014 Brocade Communications 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.datastore;
   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 ShardTestKit extends JavaTestKit {
  30     private static final Logger LOG = LoggerFactory.getLogger(ShardTestKit.class);
  31
  32     public ShardTestKit(final ActorSystem actorSystem) {
  33         super(actorSystem);
  34     }
  35
  36     public void waitForLogMessage(final Class<?> logLevel, final ActorRef subject, final String logMessage) {
  37         // Wait for a specific log message to show up
  38         final boolean result =
  39             new JavaTestKit.EventFilter<Boolean>(logLevel
  40             ) {
  41                 @Override
  42                 protected Boolean run() {
  43                     return true;
  44                 }
  45             }.from(subject.path().toString())
  46                 .message(logMessage)
  47                 .occurrences(1).exec();
  48
  49         Assert.assertEquals(true, result);
  50
  51     }
  52
  53     @SuppressWarnings("checkstyle:IllegalCatch")
  54     public static String waitUntilLeader(final ActorRef shard) {
  55         FiniteDuration duration = Duration.create(100, TimeUnit.MILLISECONDS);
  56         for (int i = 0; i < 20 * 5; i++) {
  57             Future<Object> future = Patterns.ask(shard, FindLeader.INSTANCE, new Timeout(duration));
  58             try {
  59                 final Optional<String> maybeLeader = ((FindLeaderReply) Await.result(future, duration))
  60                         .getLeaderActor();
  61                 if (maybeLeader.isPresent()) {
  62                     return maybeLeader.get();
  63                 }
  64             } catch (TimeoutException e) {
  65                 LOG.trace("FindLeader timed out", e);
  66             } catch (Exception e) {
  67                 LOG.error("FindLeader failed", e);
  68             }
  69
  70             Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
  71         }
  72
  73         Assert.fail("Leader not found for shard " + shard.path());
  74         return null;
  75     }
  76
  77     @SuppressWarnings("checkstyle:IllegalCatch")
  78     public void waitUntilNoLeader(final ActorRef shard) {
  79         FiniteDuration duration = Duration.create(100, TimeUnit.MILLISECONDS);
  80         Object lastResponse = null;
  81         for (int i = 0; i < 20 * 5; i++) {
  82             Future<Object> future = Patterns.ask(shard, FindLeader.INSTANCE, new Timeout(duration));
  83             try {
  84                 final Optional<String> maybeLeader = ((FindLeaderReply) Await.result(future, duration))
  85                         .getLeaderActor();
  86                 if (!maybeLeader.isPresent()) {
  87                     return;
  88                 }
  89
  90                 lastResponse = maybeLeader.get();
  91             } catch (TimeoutException e) {
  92                 lastResponse = e;
  93             } catch (Exception e) {
  94                 LOG.error("FindLeader failed", e);
  95                 lastResponse = e;
  96             }
  97
  98             Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
  99         }
 100
 101         if (lastResponse instanceof Throwable) {
 102             throw (AssertionError)new AssertionError(
 103                     String.format("Unexpected error occurred from FindLeader for shard %s", shard.path()))
 104                             .initCause((Throwable)lastResponse);
 105         }
 106
 107         Assert.fail(String.format("Unexpected leader %s found for shard %s", lastResponse, shard.path()));
 108     }
 109 }