content: /*
   * Copyright (C) 2010-2101 Alibaba Group Holding Limited.
   *
   * 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
   *
   *     http://www.apache.org/licenses/LICENSE-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.alibaba.otter.shared.communication.core.impl.connection;
  
  import org.apache.commons.pool.impl.GenericKeyedObjectPool;
  
  import com.alibaba.otter.shared.communication.core.exception.CommunicationException;
  import com.alibaba.otter.shared.communication.core.impl.rmi.RmiCommunicationConnectionFactory;
  import com.alibaba.otter.shared.communication.core.model.CommunicationParam;
  
  /**
   * @author jianghang 2011-9-9 下午05:48:13
   */
  public class CommunicationConnectionPoolFactory implements CommunicationConnectionFactory {
  
      private volatile GenericKeyedObjectPool pool      = null;
      private CommunicationConnectionFactory  factory   = new RmiCommunicationConnectionFactory();
      private int                             maxActive = 10;
  
      public CommunicationConnectionPoolFactory(){
      }
  
      public CommunicationConnectionPoolFactory(CommunicationConnectionFactory factory){
          this.factory = factory;
          initial();
      }
  
      public void initial() {
          if (factory == null) {
              throw new IllegalArgumentException("factory is null!");
          }
  
          // 创建链接池对象
          pool = new GenericKeyedObjectPool();
          pool.setMaxActive(maxActive);
          pool.setMaxIdle(maxActive);
          pool.setMinIdle(0);
          pool.setMaxWait(60 * 1000); // 60s
          pool.setTestOnBorrow(false);
          pool.setTestOnReturn(false);
          pool.setTimeBetweenEvictionRunsMillis(10 * 1000);
          pool.setNumTestsPerEvictionRun(maxActive * 2);
          pool.setMinEvictableIdleTimeMillis(30 * 60 * 1000);
          pool.setTestWhileIdle(true);
          pool.setFactory(new CommunicationConnectionPoolableFactory(factory)); // 设置连接池管理对象
      }
  
      public void destory() {
          try {
              pool.close();
          } catch (Exception e) {
              throw new CommunicationException("Connection_Pool_Close_Error", e);
          }
      }
  
      public CommunicationConnection createConnection(CommunicationParam params) {
          try {
              CommunicationConnectionPoolable poolable = new CommunicationConnectionPoolable(
                                                                                             (CommunicationConnection) pool.borrowObject(params),
                                                                                             this);
              return poolable;
          } catch (Exception e) {
              throw new CommunicationException("createConnection_error", e);
          }
      }
  
      public void releaseConnection(CommunicationConnection connection) {
          try {
              pool.returnObject(connection.getParams(), connection);
          } catch (Exception e) {
              throw new CommunicationException("releaseConnection_error", e);
          }
      }
  
      // ======================= setter / getter =======================
  
      public void setFactory(CommunicationConnectionFactory factory) {
          this.factory = factory;
      }
  
      public void setMaxActive(int maxActive) {
          this.maxActive = maxActive;
      }
  
  }
  