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.examples.hello;
020
021import org.apache.reef.client.DriverConfiguration;
022import org.apache.reef.client.DriverLauncher;
023import org.apache.reef.client.LauncherStatus;
024import org.apache.reef.runtime.local.client.LocalRuntimeConfiguration;
025import org.apache.reef.tang.Configuration;
026import org.apache.reef.tang.exceptions.InjectionException;
027import org.apache.reef.util.EnvironmentUtils;
028import org.apache.reef.util.ThreadLogger;
029
030import java.util.logging.Level;
031import java.util.logging.Logger;
032
033/**
034 * The Client for Hello REEF example.
035 */
036public final class HelloREEF {
037
038  private static final Logger LOG = Logger.getLogger(HelloREEF.class.getName());
039
040  /** Number of milliseconds to wait for the job to complete. */
041  private static final int JOB_TIMEOUT = 10000; // 10 sec.
042
043
044  /** Configuration of the runtime. */
045  private static final Configuration RUNTIME_CONFIG =
046      LocalRuntimeConfiguration.CONF
047          .set(LocalRuntimeConfiguration.MAX_NUMBER_OF_EVALUATORS, 2)
048          .build();
049
050  /** Configuration of the HelloREEF driver. */
051  private static final Configuration DRIVER_CONFIG =
052      DriverConfiguration.CONF
053          .set(DriverConfiguration.DRIVER_IDENTIFIER, "HelloREEF")
054          .set(DriverConfiguration.GLOBAL_LIBRARIES, EnvironmentUtils.getClassLocation(HelloDriver.class))
055          .set(DriverConfiguration.ON_DRIVER_STARTED, HelloDriver.StartHandler.class)
056          .set(DriverConfiguration.ON_EVALUATOR_ALLOCATED, HelloDriver.EvaluatorAllocatedHandler.class)
057          .build();
058
059  /**
060   * Start Hello REEF job with local runtime.
061   * @param args command line parameters.
062   * @throws InjectionException configuration error.
063   */
064  public static void main(final String[] args) throws InjectionException {
065
066    final LauncherStatus status = DriverLauncher.getLauncher(RUNTIME_CONFIG).run(DRIVER_CONFIG, JOB_TIMEOUT);
067
068    LOG.log(Level.INFO, "REEF job completed: {0}", status);
069
070    ThreadLogger.logThreads(LOG, Level.FINE, "Threads running at the end of HelloREEF:");
071  }
072
073  /** Empty private constructor to prohibit instantiation of utility class. */
074  private HelloREEF() { }
075}