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.common.transport;
  
  import com.tencent.angel.common.location.Location;
  import io.netty.bootstrap.Bootstrap;
  import io.netty.channel.Channel;
  import io.netty.channel.ChannelFuture;
  
  import java.util.concurrent.TimeoutException;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.commons.pool.PoolableObjectFactory;
  
  /**
   * Netty channel pool factory.
   */
  public class ChannelObjectFactory implements PoolableObjectFactory<Channel> {
  
    private static final Log LOG = LogFactory.getLog(ChannelObjectFactory.class);
    /**
     * server address
     */
    private final Location loc;
  
    /**
     * netty client bootstrap
     */
    private final Bootstrap bootstrap;
  
    /**
     * Create a new ChannelObjectFactory.
     *
     * @param loc       server address
     * @param bootstrap netty client bootstrap
     */
    public ChannelObjectFactory(Location loc, Bootstrap bootstrap) {
      this.loc = loc;
      this.bootstrap = bootstrap;
    }
  
    @Override public void activateObject(Channel channel) throws Exception {
  
    }
  
    @Override public void destroyObject(Channel channel) throws Exception {
      channel.close();
    }
  
    @Override public Channel makeObject() throws Exception {
      ChannelFuture connectFuture = bootstrap.connect(loc.getIp(), loc.getPort());
      int ticks = 10000;
      while (ticks-- > 0) {
        if (connectFuture.isDone()) {
          return connectFuture.channel();
        }
        Thread.sleep(10);
      }
  
      if (!connectFuture.isDone()) {
        throw new TimeoutException("connect " + loc + " timeout");
      } else {
        return connectFuture.channel();
      }
    }
  
    @Override public void passivateObject(Channel channel) throws Exception {
  
    }
  
    @Override public boolean validateObject(Channel channel) {
      return channel.isOpen();
    }
  }
  