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.BindException;
027import org.apache.reef.tang.exceptions.InjectionException;
028import org.apache.reef.util.EnvironmentUtils;
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  /**
041   * Number of milliseconds to wait for the job to complete.
042   */
043  private static final int JOB_TIMEOUT = 10000; // 10 sec.
044
045  /**
046   * @return the configuration of the HelloREEF driver.
047   */
048  public static Configuration getDriverConfiguration() {
049    return DriverConfiguration.CONF
050        .set(DriverConfiguration.GLOBAL_LIBRARIES, EnvironmentUtils.getClassLocation(HelloDriver.class))
051        .set(DriverConfiguration.DRIVER_IDENTIFIER, "HelloREEF")
052        .set(DriverConfiguration.ON_DRIVER_STARTED, HelloDriver.StartHandler.class)
053        .set(DriverConfiguration.ON_EVALUATOR_ALLOCATED, HelloDriver.EvaluatorAllocatedHandler.class)
054        .build();
055  }
056
057  public static LauncherStatus runHelloReef(final Configuration runtimeConf, final int timeOut)
058      throws BindException, InjectionException {
059    final Configuration driverConf = getDriverConfiguration();
060    return DriverLauncher.getLauncher(runtimeConf).run(driverConf, timeOut);
061  }
062
063  /**
064   * Start Hello REEF job. Runs method runHelloReef().
065   *
066   * @param args command line parameters.
067   * @throws BindException      configuration error.
068   * @throws InjectionException configuration error.
069   */
070  public static void main(final String[] args) throws BindException, InjectionException {
071    final Configuration runtimeConfiguration = LocalRuntimeConfiguration.CONF
072        .set(LocalRuntimeConfiguration.NUMBER_OF_THREADS, 2)
073        .build();
074    final LauncherStatus status = runHelloReef(runtimeConfiguration, JOB_TIMEOUT);
075    LOG.log(Level.INFO, "REEF job completed: {0}", status);
076  }
077}