Source code

001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.tests.fail.task;
020
021import org.apache.reef.task.Task;
022import org.apache.reef.task.events.DriverMessage;
023import org.apache.reef.tests.library.exceptions.SimulatedTaskFailure;
024import org.apache.reef.wake.EventHandler;
025
026import javax.inject.Inject;
027import java.util.logging.Level;
028import java.util.logging.Logger;
029
030/**
031 * A basic task that just fails when we send it a message.
032 */
033public final class FailTaskMsg implements Task, EventHandler<DriverMessage> {
034
035  private static final Logger LOG = Logger.getLogger(FailTaskMsg.class.getName());
036  private transient boolean isRunning = true;
037
038  @Inject
039  public FailTaskMsg() {
040    LOG.info("FailTaskMsg created.");
041  }
042
043  @Override
044  public byte[] call(final byte[] memento) {
045    synchronized (this) {
046      LOG.info("FailTaskMsg.call() invoked. Waiting for the message.");
047      while (this.isRunning) {
048        try {
049          this.wait();
050        } catch (final InterruptedException ex) {
051          LOG.log(Level.WARNING, "wait() interrupted.", ex);
052        }
053      }
054    }
055    return new byte[0];
056  }
057
058  @Override
059  public void onNext(final DriverMessage driverMessage) throws SimulatedTaskFailure {
060    final SimulatedTaskFailure ex = new SimulatedTaskFailure("FailTaskMsg.send() invoked.");
061    LOG.log(Level.FINE, "FailTaskMsg.send() invoked: {0}", ex);
062    throw ex;
063  }
064}
065