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.ps.PSAttemptId;
  import com.tencent.angel.ps.ParameterServer;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.hadoop.conf.Configuration;
  
  /**
   * Local Angel PS. It startups the {@link ParameterServer} using a thread.
   */
  public class LocalPS extends Thread {
    private static final Log LOG = LogFactory.getLog(LocalPS.class);
    /**
     * ps
     */
    private final ParameterServer ps;
  
    /**
     * Create a local ps
     *
     * @param psAttemptId    ps attempt id
     * @param masterLocation master location
     * @param conf           cluster configuration
     */
    public LocalPS(PSAttemptId psAttemptId, Location masterLocation, Configuration conf) {
      ps = new ParameterServer(psAttemptId.getPsId().getIndex(), psAttemptId.getIndex(),
        masterLocation.getIp(), masterLocation.getPort(), conf);
    }
  
    @Override public void run() {
      try {
        ps.initialize();
        ps.start();
      } catch (Exception e) {
        LOG.fatal("ps " + ps.getPSAttemptId() + " start failed.", e);
        ps.failed(e.getMessage());
      }
    }
  
    /**
     * Get ps
     *
     * @return ps
     */
    public ParameterServer getPS() {
      return ps;
    }
  
    /**
     * Exit
     */
    public void exit() {
      ps.stop(0);
      interrupt();
    }
  }
  