content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in 
   * compliance with the License. You may obtain a copy of the License at
   *
   * https://opensource.org/licenses/Apache-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License
   * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
   * or implied. See the License for the specific language governing permissions and limitations under
   * the License.
   *
   */
  
  
  package com.tencent.angel.localcluster;
  
  import com.tencent.angel.common.location.Location;
  import com.tencent.angel.worker.Worker;
  import com.tencent.angel.worker.WorkerAttemptId;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.yarn.api.records.ApplicationId;
  
  /**
   * Local Angel Worker. It startups the {@link Worker} using a thread.
   */
  public class LocalWorker extends Thread {
    private static final Log LOG = LogFactory.getLog(LocalCluster.class);
    private final Worker worker;
  
    /**
     * Create a local worker
     *
     * @param conf            cluster configuration
     * @param appId           application id
     * @param user            submit user name
     * @param workerAttemptId worker attempt id
     * @param masterLocation  the location of master
     * @param initMinClock    the start clock value
     * @param isLeader        the worker is the leader of the workergroup or not
     */
    public LocalWorker(Configuration conf, ApplicationId appId, String user,
      WorkerAttemptId workerAttemptId, Location masterLocation, int initMinClock, boolean isLeader) {
      worker = new Worker(conf, appId, user, workerAttemptId, masterLocation, 0, false);
    }
  
    @Override public void run() {
      try {
        worker.initAndStart();
      } catch (Exception e) {
        LOG.fatal("worker " + worker.getWorkerAttemptId() + " start failed.", e);
        worker.error(e.getMessage());
      }
    }
  
    /**
     * Get worker
     *
     * @return worker
     */
    public Worker getWorker() {
      return worker;
    }
  
    /**
     * Exit
     */
    public void exit() {
      worker.stop(0);
      interrupt();
    }
  }
  