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.REEF;
023import org.apache.reef.runtime.local.client.LocalRuntimeConfiguration;
024import org.apache.reef.tang.Configuration;
025import org.apache.reef.tang.Tang;
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 * A main() for running hello REEF without a persistent client connection.
035 */
036public final class HelloREEFNoClient {
037
038  private static final Logger LOG = Logger.getLogger(HelloREEFNoClient.class.getName());
039
040  /**
041   * The upper limit on the number of Evaluators that the local resourcemanager will hand out concurrently.
042   */
043  private static final int MAX_NUMBER_OF_EVALUATORS = 2;
044
045  /**
046   * @return the configuration of the runtime
047   */
048  private static Configuration getRuntimeConfiguration() {
049    return LocalRuntimeConfiguration.CONF
050        .set(LocalRuntimeConfiguration.MAX_NUMBER_OF_EVALUATORS, MAX_NUMBER_OF_EVALUATORS)
051        .build();
052  }
053
054  /**
055   * @return the configuration of the HelloREEF driver.
056   */
057  private static Configuration getDriverConfiguration() {
058    return DriverConfiguration.CONF
059        .set(DriverConfiguration.GLOBAL_LIBRARIES, EnvironmentUtils.getClassLocation(HelloDriver.class))
060        .set(DriverConfiguration.DRIVER_IDENTIFIER, "HelloREEF")
061        .set(DriverConfiguration.ON_DRIVER_STARTED, HelloDriver.StartHandler.class)
062        .set(DriverConfiguration.ON_EVALUATOR_ALLOCATED, HelloDriver.EvaluatorAllocatedHandler.class)
063        .build();
064  }
065
066  /**
067   * Used in the HDInsight example.
068   * @param runtimeConf the configuration of the runtime
069   * @throws InjectionException
070   */
071  public static void runHelloReefWithoutClient(final Configuration runtimeConf) throws InjectionException {
072    final REEF reef = Tang.Factory.getTang().newInjector(runtimeConf).getInstance(REEF.class);
073    final Configuration driverConf = getDriverConfiguration();
074    reef.submit(driverConf);
075  }
076
077  public static void main(final String[] args) throws BindException, InjectionException {
078    final Configuration runtimeConf = getRuntimeConfiguration();
079    final Configuration driverConf = getDriverConfiguration();
080
081    final REEF reef = Tang.Factory.getTang().newInjector(runtimeConf).getInstance(REEF.class);
082    reef.submit(driverConf);
083    LOG.log(Level.INFO, "Job Submitted");
084  }
085
086  /**
087   * Empty private constructor to prohibit instantiation of utility class.
088   */
089  private HelloREEFNoClient() {
090  }
091}