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.runtime.common.driver;
020
021import org.apache.reef.annotations.audience.DriverSide;
022import org.apache.reef.annotations.audience.Private;
023import org.apache.reef.wake.EventHandler;
024
025import javax.inject.Inject;
026import java.util.logging.Level;
027import java.util.logging.Logger;
028
029/**
030 * Exception handler for exceptions thrown by client code in the Driver.
031 * It uses the JobMessageObserverImpl to send an update to the client and die.
032 */
033@Private
034@DriverSide
035public final class DriverExceptionHandler implements EventHandler<Throwable> {
036  private static final Logger LOG = Logger.getLogger(DriverExceptionHandler.class.getName());
037  /**
038   * We delegate the failures to this object.
039   */
040  private final DriverStatusManager driverStatusManager;
041
042  @Inject
043  public DriverExceptionHandler(final DriverStatusManager driverStatusManager) {
044    this.driverStatusManager = driverStatusManager;
045    LOG.log(Level.FINE, "Instantiated 'DriverExceptionHandler'");
046  }
047
048
049  @Override
050  public void onNext(final Throwable throwable) {
051    this.driverStatusManager.onError(throwable);
052  }
053}