thrift 连接池
简介
Thrift是Facebook的核心框架之一，使不同的开发语言开发的系统可以通过该框架实现彼此的通信，类似于webservice，但是Thrift提供了近乎变态的效率和开发的方便性，是webservice所不能比拟的。给分布式开发带来了极大的方便。但是这柄利器也有一些不完美。
问题
首先文档相当的少，只有一个wiki网站提供相应的帮助。这对于Thrift的推广极为不利。
其次框架本身实现有一些缺陷，就Thrift的java部分来说，没有提供连接池的支持，对RPC的调用效率有所影响。
对于文档稀少的问题，只能是通过一些Thrift的开发者和使用者多供献一些自己的心得来解决。这得需要一个过程。而连接池的问题的解决则可以快速一些。
提到池一般做过Java开发的肯定会想到ObjectPool，Apache Commons项目确实给我们的开发得来了很大的便利性，其中的pool项目正是我们实现thrift连接池的基础。
实现
一，定义thrift连接池接口
ConnectionProvider
二，实现连接池
GenericConnectionProvider
ThriftPoolableObjectFactory
三，定义连接的管理类
ConnectionManager
Thrift是Facebook的核心框架之一，使不同的开发语言开发的系统可以通过该框架实现彼此的通信，类似于webservice，但是Thrift提供了近乎变态的效率和开发的方便性，是webservice所不能比拟的。给分布式开发带来了极大的方便。但是这柄利器也有一些不完美。
问题
首先文档相当的少，只有一个wiki网站提供相应的帮助。这对于Thrift的推广极为不利。
其次框架本身实现有一些缺陷，就Thrift的java部分来说，没有提供连接池的支持，对RPC的调用效率有所影响。
对于文档稀少的问题，只能是通过一些Thrift的开发者和使用者多供献一些自己的心得来解决。这得需要一个过程。而连接池的问题的解决则可以快速一些。
提到池一般做过Java开发的肯定会想到ObjectPool，Apache Commons项目确实给我们的开发得来了很大的便利性，其中的pool项目正是我们实现thrift连接池的基础。
实现
一，定义thrift连接池接口
ConnectionProvider
*
* @(#)ConnectionProvider.java 0.1 05/11/17
*
*/
package com.qidea.thrift.pool;
import org.apache.thrift.transport.TSocket;
public interface ConnectionProvider
{
/**
* 取链接池中的一个链接
*
* @return
*/
public TSocket getConnection();
/**
* 返回链接
*
* @param socket
*/
public void returnCon(TSocket socket);
}
二，实现连接池
GenericConnectionProvider
/*
* @(#)DefaultConnectionProviderImpl.java 0.1 05/11/17
*
* Copyright 2010 QISI, Inc. All rights reserved.
* QISI PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package com.qidea.thrift.pool;
import org.apache.commons.pool.ObjectPool;
import org.apache.commons.pool.impl.GenericObjectPool;
import org.apache.thrift.transport.TSocket;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
public class GenericConnectionProvider implements ConnectionProvider,
InitializingBean, DisposableBean
{
public static final Logger logger = LoggerFactory
.getLogger(GenericConnectionProvider.class);
/** 服务的IP地址 */
private String serviceIP;
/** 服务的端口 */
private int servicePort;
/** 连接超时配置 */
private int conTimeOut;
/** 可以从缓存池中分配对象的最大数量 */
private int maxActive = GenericObjectPool.DEFAULT_MAX_ACTIVE;
/** 缓存池中最大空闲对象数量 */
private int maxIdle = GenericObjectPool.DEFAULT_MAX_IDLE;
/** 缓存池中最小空闲对象数量 */
private int minIdle = GenericObjectPool.DEFAULT_MIN_IDLE;
/** 阻塞的最大数量 */
private long maxWait = GenericObjectPool.DEFAULT_MAX_WAIT;
/** 从缓存池中分配对象，是否执行PoolableObjectFactory.validateObject方法 */
private boolean testOnBorrow = GenericObjectPool.DEFAULT_TEST_ON_BORROW;
private boolean testOnReturn = GenericObjectPool.DEFAULT_TEST_ON_RETURN;
private boolean testWhileIdle = GenericObjectPool.DEFAULT_TEST_WHILE_IDLE;
/** 对象缓存池 */
private ObjectPool objectPool = null;
/**
*
*/
@Override
public void afterPropertiesSet() throws Exception
{
// 对象池
objectPool = new GenericObjectPool();
//
((GenericObjectPool) objectPool).setMaxActive(maxActive);
((GenericObjectPool) objectPool).setMaxIdle(maxIdle);
((GenericObjectPool) objectPool).setMinIdle(minIdle);
((GenericObjectPool) objectPool).setMaxWait(maxWait);
((GenericObjectPool) objectPool).setTestOnBorrow(testOnBorrow);
((GenericObjectPool) objectPool).setTestOnReturn(testOnReturn);
((GenericObjectPool) objectPool).setTestWhileIdle(testWhileIdle);
((GenericObjectPool) objectPool)
.setWhenExhaustedAction(GenericObjectPool.WHEN_EXHAUSTED_BLOCK);
// 设置factory
ThriftPoolableObjectFactory thriftPoolableObjectFactory = new ThriftPoolableObjectFactory(
serviceIP, servicePort, conTimeOut);
objectPool.setFactory(thriftPoolableObjectFactory);
}
@Override
public void destroy()
{
try
{
objectPool.close();
}
catch (Exception e)
{
throw new RuntimeException("erorr destroy()", e);
}
}
@Override
public TSocket getConnection()
{
try
{
TSocket socket = (TSocket) objectPool.borrowObject();
return socket;
}
catch (Exception e)
{
throw new RuntimeException("error getConnection()", e);
}
}
@Override
public void returnCon(TSocket socket)
{
try
{
objectPool.returnObject(socket);
}
catch (Exception e)
{
throw new RuntimeException("error returnCon()", e);
}
}
public String getServiceIP()
{
return serviceIP;
}
public void setServiceIP(String serviceIP)
{
this.serviceIP = serviceIP;
}
public int getServicePort()
{
return servicePort;
}
public void setServicePort(int servicePort)
{
this.servicePort = servicePort;
}
public int getConTimeOut()
{
return conTimeOut;
}
public void setConTimeOut(int conTimeOut)
{
this.conTimeOut = conTimeOut;
}
public int getMaxActive()
{
return maxActive;
}
public void setMaxActive(int maxActive)
{
this.maxActive = maxActive;
}
public int getMaxIdle()
{
return maxIdle;
}
public void setMaxIdle(int maxIdle)
{
this.maxIdle = maxIdle;
}
public int getMinIdle()
{
return minIdle;
}
public void setMinIdle(int minIdle)
{
this.minIdle = minIdle;
}
public long getMaxWait()
{
return maxWait;
}
public void setMaxWait(long maxWait)
{
this.maxWait = maxWait;
}
public boolean isTestOnBorrow()
{
return testOnBorrow;
}
public void setTestOnBorrow(boolean testOnBorrow)
{
this.testOnBorrow = testOnBorrow;
}
public boolean isTestOnReturn()
{
return testOnReturn;
}
public void setTestOnReturn(boolean testOnReturn)
{
this.testOnReturn = testOnReturn;
}
public boolean isTestWhileIdle()
{
return testWhileIdle;
}
public void setTestWhileIdle(boolean testWhileIdle)
{
this.testWhileIdle = testWhileIdle;
}
public ObjectPool getObjectPool()
{
return objectPool;
}
public void setObjectPool(ObjectPool objectPool)
{
this.objectPool = objectPool;
}
}
ThriftPoolableObjectFactory
ThriftPoolableObjectFactory
/*
* @(#)ThriftPoolableObjectFactory.java 0.1 05/11/17
*/
package com.qidea.thrift.pool;
import org.apache.commons.pool.PoolableObjectFactory;
import org.apache.thrift.transport.TSocket;
import org.apache.thrift.transport.TTransport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ThriftPoolableObjectFactory implements PoolableObjectFactory
{
/** 日志记录器 */
public static final Logger logger = LoggerFactory
.getLogger(ThriftPoolableObjectFactory.class);
/** 服务的IP */
private String serviceIP;
/** 服务的端口 */
private int servicePort;
/** 超时设置 */
private int timeOut;
/**
*
* @param serviceIP
* @param servicePort
* @param timeOut
*/
public ThriftPoolableObjectFactory(String serviceIP, int servicePort,
int timeOut)
{
this.serviceIP = serviceIP;
this.servicePort = servicePort;
this.timeOut = timeOut;
}
@Override
public void destroyObject(Object arg0) throws Exception
{
if (arg0 instanceof TSocket)
{
TSocket socket = (TSocket) arg0;
if (socket.isOpen())
{
socket.close();
}
}
}
/**
*
*/
@Override
public Object makeObject() throws Exception
{
try
{
TTransport transport = new TSocket(this.serviceIP,
this.servicePort, this.timeOut);
transport.open();
return transport;
}
catch (Exception e)
{
logger.error("error ThriftPoolableObjectFactory()", e);
throw new RuntimeException(e);
}
}
@Override
public boolean validateObject(Object arg0)
{
try
{
if (arg0 instanceof TSocket)
{
TSocket thriftSocket = (TSocket) arg0;
if (thriftSocket.isOpen())
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
catch (Exception e)
{
return false;
}
}
@Override
public void passivateObject(Object arg0) throws Exception
{
// DO NOTHING
}
@Override
public void activateObject(Object arg0) throws Exception
{
// DO NOTHING
}
public String getServiceIP()
{
return serviceIP;
}
public void setServiceIP(String serviceIP)
{
this.serviceIP = serviceIP;
}
public int getServicePort()
{
return servicePort;
}
public void setServicePort(int servicePort)
{
this.servicePort = servicePort;
}
public int getTimeOut()
{
return timeOut;
}
public void setTimeOut(int timeOut)
{
this.timeOut = timeOut;
}
}
三，定义连接的管理类
ConnectionManager
/*
* @(#)ConnectionManager.java 0.1 05/11/17
*
* Copyright 2010 QISI, Inc. All rights reserved.
* QISI PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package com.qidea.thrift.pool;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.thrift.transport.TSocket;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author sunwei
* @version 2010-8-10
* @since JDK1.5
*/
public class ConnectionManager implements MethodInterceptor
{
/** 日志记录器 */
public Logger logger = LoggerFactory.getLogger(ConnectionManager.class);
/** 保存local对象 */
ThreadLocal<TSocket> socketThreadSafe = new ThreadLocal<TSocket>();
/** 连接提供池 */
public ConnectionProvider connectionProvider;
@Override
public Object invoke(MethodInvocation arg0) throws Throwable
{
TSocket socket = null;
try
{
socket = connectionProvider.getConnection();
socketThreadSafe.set(socket);
Object ret = arg0.proceed();
return ret;
}
catch (Exception e)
{
logger.error("error ConnectionManager.invoke()", e);
throw new Exception(e);
}
finally
{
connectionProvider.returnCon(socket);
socketThreadSafe.remove();
}
}
/**
* 取socket
*
* @return
*/
public TSocket getSocket()
{
return socketThreadSafe.get();
}
public ConnectionProvider getConnectionProvider()
{
return connectionProvider;
}
public void setConnectionProvider(ConnectionProvider connectionProvider)
{
this.connectionProvider = connectionProvider;
}
}