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