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 static org.junit.Assert.assertEquals;
  11 import static org.junit.Assert.fail;
  12
  13 import akka.actor.ActorRef;
  14 import akka.actor.ActorSystem;
  15 import akka.pattern.Patterns;
  16 import akka.testkit.javadsl.EventFilter;
  17 import akka.testkit.javadsl.TestKit;
  18 import akka.util.Timeout;
  19 import com.google.common.util.concurrent.Uninterruptibles;
  20 import java.util.Optional;
  21 import java.util.concurrent.TimeUnit;
  22 import java.util.concurrent.TimeoutException;
  23 import org.opendaylight.controller.cluster.raft.client.messages.FindLeader;
  24 import org.opendaylight.controller.cluster.raft.client.messages.FindLeaderReply;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27 import scala.concurrent.Await;
  28 import scala.concurrent.Future;
  29 import scala.concurrent.duration.FiniteDuration;
  30
  31 public class ShardTestKit extends TestKit {
  32     private static final Logger LOG = LoggerFactory.getLogger(ShardTestKit.class);
  33
  34     public ShardTestKit(final ActorSystem actorSystem) {
  35         super(actorSystem);
  36     }
  37
  38     public void waitForLogMessage(final Class<?> logLevel, final ActorRef subject, final String logMessage) {
  39         // Wait for a specific log message to show up
  40         final Boolean result = new EventFilter(logLevel, getSystem()).from(subject.path().toString())
  41                 .message(logMessage).occurrences(1).intercept(() -> Boolean.TRUE);
  42         assertEquals(Boolean.TRUE, result);
  43     }
  44
  45     @SuppressWarnings("checkstyle:IllegalCatch")
  46     public static String waitUntilLeader(final ActorRef shard) {
  47         FiniteDuration duration = FiniteDuration.create(100, TimeUnit.MILLISECONDS);
  48         for (int i = 0; i < 20 * 5; i++) {
  49             Future<Object> future = Patterns.ask(shard, FindLeader.INSTANCE, new Timeout(duration));
  50             try {
  51                 final Optional<String> maybeLeader = ((FindLeaderReply) Await.result(future, duration))
  52                         .getLeaderActor();
  53                 if (maybeLeader.isPresent()) {
  54                     return maybeLeader.get();
  55                 }
  56             } catch (TimeoutException e) {
  57                 LOG.trace("FindLeader timed out", e);
  58             } catch (Exception e) {
  59                 LOG.error("FindLeader failed", e);
  60             }
  61
  62             Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
  63         }
  64
  65         fail("Leader not found for shard " + shard.path());
  66         return null;
  67     }
  68
  69     @SuppressWarnings("checkstyle:IllegalCatch")
  70     public void waitUntilNoLeader(final ActorRef shard) {
  71         FiniteDuration duration = FiniteDuration.create(100, TimeUnit.MILLISECONDS);
  72         Object lastResponse = null;
  73         for (int i = 0; i < 20 * 5; i++) {
  74             Future<Object> future = Patterns.ask(shard, FindLeader.INSTANCE, new Timeout(duration));
  75             try {
  76                 final Optional<String> maybeLeader = ((FindLeaderReply) Await.result(future, duration))
  77                         .getLeaderActor();
  78                 if (!maybeLeader.isPresent()) {
  79                     return;
  80                 }
  81
  82                 lastResponse = maybeLeader.get();
  83             } catch (TimeoutException e) {
  84                 lastResponse = e;
  85             } catch (Exception e) {
  86                 LOG.error("FindLeader failed", e);
  87                 lastResponse = e;
  88             }
  89
  90             Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
  91         }
  92
  93         if (lastResponse instanceof Throwable) {
  94             throw (AssertionError)new AssertionError(
  95                     String.format("Unexpected error occurred from FindLeader for shard %s", shard.path()))
  96                             .initCause((Throwable)lastResponse);
  97         }
  98
  99         fail(String.format("Unexpected leader %s found for shard %s", lastResponse, shard.path()));
 100     }
 101 }