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.evaluator.task;
020
021import org.apache.reef.driver.task.TaskConfigurationOptions;
022import org.apache.reef.tang.Configuration;
023import org.apache.reef.tang.Tang;
024import org.apache.reef.tang.exceptions.InjectionException;
025
026/**
027 * Thrown by REEF's resourcemanager code when it catches an exception thrown by user code.
028 */
029public final class TaskClientCodeException extends Exception {
030
031  private final String taskId;
032  private final String contextId;
033
034  /**
035   * @param taskId    the id of the failed task.
036   * @param contextId the ID of the context the failed Task was executing in.
037   * @param message   the error message.
038   * @param cause     the exception that caused the Task to fail.
039   */
040  public TaskClientCodeException(final String taskId,
041                                 final String contextId,
042                                 final String message,
043                                 final Throwable cause) {
044    super("Failure in task '" + taskId + "' in context '" + contextId + "': " + message, cause);
045    this.taskId = taskId;
046    this.contextId = contextId;
047  }
048
049  /**
050   * Extracts a task id from the given configuration.
051   *
052   * @param config
053   * @return the task id in the given configuration.
054   * @throws RuntimeException if the configuration can't be parsed.
055   */
056  public static String getTaskId(final Configuration config) {
057    try {
058      return Tang.Factory.getTang().newInjector(config).getNamedInstance(TaskConfigurationOptions.Identifier.class);
059    } catch (final InjectionException ex) {
060      throw new RuntimeException("Unable to determine task identifier. Giving up.", ex);
061    }
062  }
063
064  /**
065   * @return the ID of the failed Task.
066   */
067  public String getTaskId() {
068    return this.taskId;
069  }
070
071  /**
072   * @return the ID of the context the failed Task was executing in.
073   */
074  public String getContextId() {
075    return this.contextId;
076  }
077}