Thrift不同服务类型的使用探索

vlambda
2020-01-14

Thrift不同服务类型的使用探索

Thrift是一个软件框架，用来进行可扩展且跨语言的服务的开发。它结合了功能强大的软件堆栈和代码生成引擎，以构建在 C++, Java, Python, PHP, Ruby, Erlang, Perl, Haskell, C#, Cocoa, JavaScript, Node.js, Smalltalk, and OCaml 等等编程语言间无缝结合的、高效的服务。

Thrift最初由facebook开发，07年四月开放源码，08年5月进入apache孵化器。thrift允许你定义一个简单的定义文件中的数据类型和服务接口。以作为输入文件，编译器生成代码用来方便地生成RPC客户端和服务器通信的无缝跨编程语言。

本篇博文编写的目的是对Thrfit不同的服务类型进行整理，并结合代码示例进行说明。

一、目标

本篇博文编写的目的是对Thrfit不同的服务类型进行整理，并结合代码示例进行说明。博文主要包含如下几个部分：

1. 实例代码准备

2. 对不同的服务类型进行介绍说明，并给出示例

3. 异步客户端调用实例

4. Nifty库的使用，包含服务端和客户端代码示例

二、实例

2.1 说明

在这个示例中，我们主要在用户接口中定义三个接口：保存用户，根据name获取用户列表以及删除用户

如：

/** * 保存用户 *  * @param user */ public boolean save(com.xxx.tutorial.thrift.entity.User user) throws org.apache.thrift.TException;
 /** * 根据name获取用户列表 *  * @param name */ public java.util.List<com.xxx.tutorial.thrift.entity.User> findUsersByName(java.lang.String name) throws org.apache.thrift.TException;
 /** * 删除用户 *  * @param userId */ public void deleteByUserId(int userId) throws com.xxx.tutorial.thrift.exception.UserNotFoundException, org.apache.thrift.TException;

2.2 编写thrift文件

user.thrift用于定义用户类

namespace java com.xxx.tutorial.thrift.entity
/** * 用户类 */struct User {  1:i32 userId, 2:string name}

exception.thrift用于自定义异常

include "user.thrift"include "exception.thrift"
namespace java com.xxx.tutorial.thrift.service 
/** * 用户服务 */service UserService {
 /**保存用户*/  bool save(1:user.User user),  /**根据name获取用户列表*/  list<user.User> findUsersByName(1:string name),  /**删除用户*/  void deleteByUserId(1:i32 userId) throws (1: exception.UserNotFoundException e)}

2.3 产生代码

根据thrift文件生成Java代码，这里就不再描述，请参考以前的文章【一步步完成thrift rpc示例】。

2.4 服务接口代码

将生成的Java代码放入thrift-demo-interface模块。如：

2.6 服务实现代码

在 thrift-demo-service模块增加 UserService的实现类。

UserServiceImpl.java的内容如下：

package com.xxx.tutorial.thrift.service.impl;
import java.util.Arrays;import java.util.List;import java.util.logging.Logger;
import org.apache.thrift.TException;
import com.xxx.tutorial.thrift.entity.User;import com.xxx.tutorial.thrift.exception.UserNotFoundException;import com.xxx.tutorial.thrift.service.UserService;
/** * @author wangmengjun * */public class UserServiceImpl implements UserService.Iface {
 private static final Logger logger = Logger.getLogger(UserServiceImpl.class.getName());
 public boolean save(User user) throws TException { logger.info("方法save的参数user的内容==>" + user.toString()); return true; }
 public List<User> findUsersByName(String name) throws TException { logger.info("方法findUsersByName的参数name的内容==>" + name); return Arrays.asList(new User(1, "Wang"), new User(2, "Mengjun")); }
 public void deleteByUserId(int userId) throws UserNotFoundException, TException { /** * 直接模拟抛出异常，用于测试 */ logger.info("方法deleteByUserId的参数userId的内容==>" + userId); throw new UserNotFoundException("1001", String.format("userId=%d的用户不存在", userId)); }}

经过上述几个操作，用户服务接口以及实现类的编写就完毕了。

接下来，就能够创建Thrift服务~

三、Thrift不同服务端类型

3.1 服务端类型

查看Thrift的TServer层次结构，我们可以看出，Thrift的服务端类型有如下几种。服务端类型的描述如下：

TSimpleServer —— 单线程服务器端使用标准的阻塞式 I/O

/** * Simple singlethreaded server for testing. * */public class TSimpleServer extends TServer {... ...}

TThreadPoolServer —— 多线程服务器端使用标准的阻塞式 I/O

/** * Server which uses Java's built in ThreadPool management to spawn off * a worker pool that * */public class TThreadPoolServer extends TServer {
... ...
}

TNonblockingServer —— 多线程服务器端使用非阻塞式 I/O


/** * A nonblocking TServer implementation. This allows for fairness amongst all * connected clients in terms of invocations. * * This server is inherently single-threaded. If you want a limited thread pool * coupled with invocation-fairness, see THsHaServer. * * To use this server, you MUST use a TFramedTransport at the outermost * transport, otherwise this server will be unable to determine when a whole * method call has been read off the wire. Clients must also use TFramedTransport. */public class TNonblockingServer extends AbstractNonblockingServer {
... ...
}

THsHaSercver —— 是TNonblockingServer的扩展, 多线程服务器端使用非阻塞式 I/O

/** * An extension of the TNonblockingServer to a Half-Sync/Half-Async server. * Like TNonblockingServer, it relies on the use of TFramedTransport. */public class THsHaServer extends TNonblockingServer {
... ... }

TThreadedSelectorServer —— 多线程服务器端使用非阻塞式 I/O

TThreadedSelectorServer是对以上NonblockingServer的扩充, 其分离了Accept和Read/Write的Selector线程, 同时引入Worker工作线程池. 它也是种Half-sync/Half-async的服务模型。

/** * A Half-Sync/Half-Async server with a separate pool of threads to handle * non-blocking I/O. Accepts are handled on a single thread, and a configurable * number of nonblocking selector threads manage reading and writing of client * connections. A synchronous worker thread pool handles processing of requests. *  * Performs better than TNonblockingServer/THsHaServer in multi-core * environments when the the bottleneck is CPU on the single selector thread * handling I/O. In addition, because the accept handling is decoupled from * reads/writes and invocation, the server has better ability to handle back- * pressure from new connections (e.g. stop accepting when busy). *  * Like TNonblockingServer, it relies on the use of TFramedTransport. */public class TThreadedSelectorServer extends AbstractNonblockingServer {... ...}

另外，Facebook还开源了Nifty -- 一种基于netty的thrift服务端和客户端实现。Nifty是facebook公司开源的，基于netty的thrift服务端和客户端实现。然后使用此包就可以快速发布出基于netty的高效的服务端和客户端代码。【https://github.com/facebook/nifty】

3.2 服务端创建步骤

（1）创建一个transport对象

（2）为transport对象创建输入输出protocol

（3）基于输入输出protocol创建processor

（4）等待连接请求并将之交给processor处理

如：

 try {  /** * 1. 创建Transport */ TServerSocket serverTransport = new TServerSocket(SERVER_PORT); TServer.Args tArgs = new TServer.Args(serverTransport);  /** * 2. 为Transport创建Protocol */ tArgs.protocolFactory(new TBinaryProtocol.Factory()); // tArgs.protocolFactory(new TCompactProtocol.Factory()); // tArgs.protocolFactory(new TJSONProtocol.Factory());  /** * 3. 为Protocol创建Processor */ TProcessor tprocessor = new UserService.Processor<UserService.Iface>(new UserServiceImpl()); tArgs.processor(tprocessor);

 /** * 4. 创建Server并启动 *  * org.apache.thrift.server.TSimpleServer - 简单的单线程服务模型，一般用于测试 */ TServer server = new TSimpleServer(tArgs); logger.info("UserService TSimpleServer start ...."); server.serve(); 
 } catch (Exception e) { logger.severe("Server start error!!!" + e.getLocalizedMessage()); e.printStackTrace(); }

接下来，我们就一起来完成不同服务端类型的代码示例以及客户端调用实例~

四、TSimpleServer服务类型

4.1 服务端

package com.xxx.tutorial.thrift.server;
import java.util.logging.Logger;
import org.apache.thrift.TProcessor;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.server.TServer;import org.apache.thrift.server.TSimpleServer;import org.apache.thrift.transport.TServerSocket;
import com.xxx.tutorial.thrift.service.UserService;import com.xxx.tutorial.thrift.service.impl.UserServiceImpl;
/** * @author wangmengjun * */public class TSimpleServerExample {
 private static final Logger logger = Logger.getLogger(TSimpleServerExample.class.getName());
 private static final int SERVER_PORT = 9123;
 public static void main(String[] args) {
 try {  /** * 1. 创建Transport */ TServerSocket serverTransport = new TServerSocket(SERVER_PORT); TServer.Args tArgs = new TServer.Args(serverTransport);  /** * 2. 为Transport创建Protocol */ tArgs.protocolFactory(new TBinaryProtocol.Factory()); // tArgs.protocolFactory(new TCompactProtocol.Factory()); // tArgs.protocolFactory(new TJSONProtocol.Factory());  /** * 3. 为Protocol创建Processor */ TProcessor tprocessor = new UserService.Processor<UserService.Iface>(new UserServiceImpl()); tArgs.processor(tprocessor);

 /** * 4. 创建Server并启动 *  * org.apache.thrift.server.TSimpleServer - 简单的单线程服务模型，一般用于测试 */ TServer server = new TSimpleServer(tArgs); logger.info("UserService TSimpleServer start ...."); server.serve(); 
 } catch (Exception e) { logger.severe("Server start error!!!" + e.getLocalizedMessage()); e.printStackTrace(); } }}

4.2 客户端

package com.xxx.tutorial.thrift.client;
import java.util.List;import java.util.logging.Logger;
import org.apache.thrift.TException;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.protocol.TProtocol;import org.apache.thrift.transport.TSocket;import org.apache.thrift.transport.TTransport;import org.apache.thrift.transport.TTransportException;
import com.xxx.tutorial.thrift.entity.User;import com.xxx.tutorial.thrift.exception.UserNotFoundException;import com.xxx.tutorial.thrift.service.UserService;
/** *  * @author wangmengjun * */public class UserClient {
 private static final Logger logger = Logger.getLogger(UserClient.class.getName());
 public static void main(String[] args) {
 try {
 TTransport transport = new TSocket("127.0.0.1", 9123); TProtocol protocol = new TBinaryProtocol(transport);
 UserService.Client client = new UserService.Client(protocol); transport.open();
 /** * 查询User列表 */ List<User> users = client.findUsersByName("wang"); logger.info("client.findUsersByName()方法結果 == >" + users);
 /** * 保存User */ boolean isUserSaved = client.save(new User(101, "WMJ")); logger.info("user saved result == > " + isUserSaved);
 /** * 删除用户 */ client.deleteByUserId(1002);
 transport.close();
 } catch (TTransportException e) { logger.severe("TTransportException==>" + e.getLocalizedMessage()); } catch (UserNotFoundException e) { logger.severe("UserNotFoundException==>" + e.getMessage()); } catch (TException e) { logger.severe("TException==>" + e.getLocalizedMessage()); } }}

4.3 测试

服务端控制台输出

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.六月 09, 2017 8:29:14 下午 com.xxx.tutorial.thrift.server.TSimpleServerExample main信息: UserService TSimpleServer start ....六月 09, 2017 8:29:27 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl findUsersByName信息: 方法findUsersByName的参数name的内容==>wang六月 09, 2017 8:29:27 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl save信息: 方法save的参数user的内容==>User(userId:101, name:WMJ)六月 09, 2017 8:29:27 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl deleteByUserId信息: 方法deleteByUserId的参数userId的内容==>1002

客户端控制台输出

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.Received 1六月 09, 2017 8:29:27 下午 com.xxx.tutorial.thrift.client.UserClient main信息: client.findUsersByName()方法結果 == >[User(userId:1, name:Wang), User(userId:2, name:Mengjun)]Received 2六月 09, 2017 8:29:27 下午 com.xxx.tutorial.thrift.client.UserClient main信息: user saved result == > trueReceived 3六月 09, 2017 8:29:27 下午 com.xxx.tutorial.thrift.client.UserClient main严重: UserNotFoundException==>userId=1002的用户不存在

五、TThreadPoolServer 服务类型

5.1 服务端

package com.xxx.tutorial.thrift.server;
import java.util.logging.Logger;
import org.apache.thrift.TProcessor;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.server.TServer;import org.apache.thrift.server.TThreadPoolServer;import org.apache.thrift.transport.TServerSocket;
import com.xxx.tutorial.thrift.service.UserService;import com.xxx.tutorial.thrift.service.impl.UserServiceImpl;
/** *  * @author wangmengjun * */public class TThreadPoolServerExample {
 private static final Logger logger = Logger.getLogger(TThreadPoolServerExample.class.getName());
 private static final int SERVER_PORT = 9123;
 public static void main(String[] args) {
 try {  /** * 1. 创建Transport */ TServerSocket serverTransport = new TServerSocket(SERVER_PORT); TThreadPoolServer.Args tArgs = new TThreadPoolServer.Args(serverTransport);  /** * 2. 为Transport创建Protocol */ tArgs.protocolFactory(new TBinaryProtocol.Factory()); // tArgs.protocolFactory(new TCompactProtocol.Factory()); // tArgs.protocolFactory(new TJSONProtocol.Factory());  /** * 3. 为Protocol创建Processor */ TProcessor tprocessor = new UserService.Processor<UserService.Iface>(new UserServiceImpl()); tArgs.processor(tprocessor);

 /** * 4. 创建Server并启动 *  * org.apache.thrift.server.TThreadPoolServer */ TServer server = new TThreadPoolServer(tArgs); logger.info("UserService TThreadPoolServer start ...."); server.serve(); 
 } catch (Exception e) { logger.severe("Server start error!!!" + e.getLocalizedMessage()); e.printStackTrace(); } }}

5.2 客户端

客户端的代码可以和TSimpleServer中使用的Client代码一致，

package com.xxx.tutorial.thrift.client;
import java.util.List;import java.util.logging.Logger;
import org.apache.thrift.TException;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.protocol.TProtocol;import org.apache.thrift.transport.TSocket;import org.apache.thrift.transport.TTransport;import org.apache.thrift.transport.TTransportException;
import com.xxx.tutorial.thrift.entity.User;import com.xxx.tutorial.thrift.exception.UserNotFoundException;import com.xxx.tutorial.thrift.service.UserService;
/** *  * @author wangmengjun * */public class UserClient {
 private static final Logger logger = Logger.getLogger(UserClient.class.getName());
 public static void main(String[] args) {
 try {
 TTransport transport = new TSocket("127.0.0.1", 9123); TProtocol protocol = new TBinaryProtocol(transport);
 UserService.Client client = new UserService.Client(protocol); transport.open();
 /** * 查询User列表 */ List<User> users = client.findUsersByName("wang"); logger.info("client.findUsersByName()方法結果 == >" + users);
 /** * 保存User */ boolean isUserSaved = client.save(new User(101, "WMJ")); logger.info("user saved result == > " + isUserSaved);
 /** * 删除用户 */ client.deleteByUserId(1002);
 transport.close();
 } catch (TTransportException e) { logger.severe("TTransportException==>" + e.getLocalizedMessage()); } catch (UserNotFoundException e) { logger.severe("UserNotFoundException==>" + e.getMessage()); } catch (TException e) { logger.severe("TException==>" + e.getLocalizedMessage()); } }}

5.3 测试

服务端控制台输出

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.六月 09, 2017 8:31:44 下午 com.xxx.tutorial.thrift.server.TThreadPoolServerExample main信息: UserService TThreadPoolServer start ....六月 09, 2017 8:32:05 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl findUsersByName信息: 方法findUsersByName的参数name的内容==>wang六月 09, 2017 8:32:05 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl save信息: 方法save的参数user的内容==>User(userId:101, name:WMJ)六月 09, 2017 8:32:05 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl deleteByUserId信息: 方法deleteByUserId的参数userId的内容==>1002

客户端控制台输出

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.Received 1六月 09, 2017 8:32:05 下午 com.xxx.tutorial.thrift.client.UserClient main信息: client.findUsersByName()方法結果 == >[User(userId:1, name:Wang), User(userId:2, name:Mengjun)]Received 2六月 09, 2017 8:32:05 下午 com.xxx.tutorial.thrift.client.UserClient main信息: user saved result == > trueReceived 3六月 09, 2017 8:32:05 下午 com.xxx.tutorial.thrift.client.UserClient main严重: UserNotFoundException==>userId=1002的用户不存在

六、TNonblockingServer 服务类型

6.1 服务端

package com.xxx.tutorial.thrift.server;
import java.util.logging.Logger;
import org.apache.thrift.TProcessor;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.server.TNonblockingServer;import org.apache.thrift.server.TServer;import org.apache.thrift.transport.TFramedTransport;import org.apache.thrift.transport.TNonblockingServerSocket;import org.apache.thrift.transport.TNonblockingServerTransport;
import com.xxx.tutorial.thrift.service.UserService;import com.xxx.tutorial.thrift.service.impl.UserServiceImpl;
/** *  * @author wangmengjun * */public class TNonblockingServerExample {
 private static final Logger logger = Logger.getLogger(TNonblockingServerExample.class.getName());
 private static final int SERVER_PORT = 9123;
 public static void main(String[] args) {
 try {
 /** * 1. 创建Transport */ TNonblockingServerTransport serverTransport = new TNonblockingServerSocket(SERVER_PORT); TNonblockingServer.Args tArgs = new TNonblockingServer.Args(serverTransport);
 /** * 2. 为Transport创建Protocol */ tArgs.transportFactory(new TFramedTransport.Factory()); tArgs.protocolFactory(new TBinaryProtocol.Factory()); // tArgs.protocolFactory(new TCompactProtocol.Factory()); // tArgs.protocolFactory(new TJSONProtocol.Factory());
 /** * 3. 为Protocol创建Processor */ TProcessor tprocessor = new UserService.Processor<UserService.Iface>(new UserServiceImpl()); tArgs.processor(tprocessor);
 /** * 4. 创建Server并启动 */ TServer server = new TNonblockingServer(tArgs); logger.info("UserService TNonblockingServer start ...."); server.serve();
 } catch (Exception e) { logger.severe("Server start error!!!" + e.getLocalizedMessage()); e.printStackTrace(); } }}

6.2 客户端

package com.xxx.tutorial.thrift.client;
import java.util.List;import java.util.logging.Logger;
import org.apache.thrift.TException;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.protocol.TProtocol;import org.apache.thrift.transport.TFramedTransport;import org.apache.thrift.transport.TSocket;import org.apache.thrift.transport.TTransport;import org.apache.thrift.transport.TTransportException;
import com.xxx.tutorial.thrift.entity.User;import com.xxx.tutorial.thrift.exception.UserNotFoundException;import com.xxx.tutorial.thrift.service.UserService;
public class UserClient2 {
 private static final Logger logger = Logger.getLogger(UserClient.class.getName());
 public static void main(String[] args) {
 try {
 TTransport transport = new TFramedTransport(new TSocket("127.0.0.1", 9123, 3000)); TProtocol protocol = new TBinaryProtocol(transport);
 UserService.Client client = new UserService.Client(protocol); transport.open();
 /** * 查询User列表 */ List<User> users = client.findUsersByName("wang"); logger.info("client.findUsersByName()方法結果 == >" + users);
 /** * 保存User */ boolean isUserSaved = client.save(new User(101, "WMJ")); logger.info("user saved result == > " + isUserSaved);
 /** * 删除用户 */ client.deleteByUserId(1002);
 transport.close();
 } catch (TTransportException e) { logger.severe("TTransportException==>" + e.getLocalizedMessage()); } catch (UserNotFoundException e) { logger.severe("UserNotFoundException==>" + e.getLocalizedMessage()); } catch (TException e) { logger.severe("TException==>" + e.getLocalizedMessage()); } }}

6.3 测试

服务端控制台输出

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.六月 09, 2017 8:34:38 下午 com.xxx.tutorial.thrift.server.TNonblockingServerExample main信息: UserService TNonblockingServer start ....六月 09, 2017 8:34:59 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl findUsersByName信息: 方法findUsersByName的参数name的内容==>wang六月 09, 2017 8:34:59 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl save信息: 方法save的参数user的内容==>User(userId:101, name:WMJ)六月 09, 2017 8:34:59 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl deleteByUserId信息: 方法deleteByUserId的参数userId的内容==>1002

客户端控制台输出

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.Received 1六月 09, 2017 8:34:59 下午 com.xxx.tutorial.thrift.client.UserClient2 main信息: client.findUsersByName()方法結果 == >[User(userId:1, name:Wang), User(userId:2, name:Mengjun)]Received 2六月 09, 2017 8:34:59 下午 com.xxx.tutorial.thrift.client.UserClient2 main信息: user saved result == > trueReceived 3六月 09, 2017 8:34:59 下午 com.xxx.tutorial.thrift.client.UserClient2 main严重: UserNotFoundException==>userId=1002的用户不存在

七、THsHaServer服务类型

7.1 服务端

package com.xxx.tutorial.thrift.server;
import java.util.logging.Logger;
import org.apache.thrift.TProcessor;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.server.THsHaServer;import org.apache.thrift.server.TServer;import org.apache.thrift.transport.TFramedTransport;import org.apache.thrift.transport.TNonblockingServerSocket;
import com.xxx.tutorial.thrift.service.UserService;import com.xxx.tutorial.thrift.service.impl.UserServiceImpl;
/** * @author wangmengjun * */public class THsHaServerExample {
 private static final Logger logger = Logger.getLogger(THsHaServerExample.class.getName());
 private static final int SERVER_PORT = 9123;
 public static void main(String[] args) {
 try {  /** * 1. 创建Transport */ //TServerSocket serverTransport = new TServerSocket(SERVER_PORT); TNonblockingServerSocket serverTransport = new TNonblockingServerSocket(SERVER_PORT); THsHaServer.Args tArgs = new THsHaServer.Args(serverTransport);  /** * 2. 为Transport创建Protocol */ tArgs.transportFactory(new TFramedTransport.Factory()); tArgs.protocolFactory(new TBinaryProtocol.Factory()); // tArgs.protocolFactory(new TCompactProtocol.Factory()); // tArgs.protocolFactory(new TJSONProtocol.Factory());  /** * 3. 为Protocol创建Processor */ TProcessor tprocessor = new UserService.Processor<UserService.Iface>(new UserServiceImpl()); tArgs.processor(tprocessor);

 /** * 4. 创建Server并启动 *  */ //半同步半异步的服务模型 TServer server = new THsHaServer(tArgs); logger.info("UserService TSimpleServer start ...."); server.serve(); 
 } catch (Exception e) { logger.severe("Server start error!!!" + e.getLocalizedMessage()); e.printStackTrace(); } }}

7.2 客户端

package com.xxx.tutorial.thrift.client;
import java.util.List;import java.util.logging.Logger;
import org.apache.thrift.TException;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.protocol.TProtocol;import org.apache.thrift.transport.TFramedTransport;import org.apache.thrift.transport.TSocket;import org.apache.thrift.transport.TTransport;import org.apache.thrift.transport.TTransportException;
import com.xxx.tutorial.thrift.entity.User;import com.xxx.tutorial.thrift.exception.UserNotFoundException;import com.xxx.tutorial.thrift.service.UserService;
public class UserClient2 {
 private static final Logger logger = Logger.getLogger(UserClient.class.getName());
 public static void main(String[] args) {
 try {
 TTransport transport = new TFramedTransport(new TSocket("127.0.0.1", 9123, 3000)); TProtocol protocol = new TBinaryProtocol(transport);
 UserService.Client client = new UserService.Client(protocol); transport.open();
 /** * 查询User列表 */ List<User> users = client.findUsersByName("wang"); logger.info("client.findUsersByName()方法結果 == >" + users);
 /** * 保存User */ boolean isUserSaved = client.save(new User(101, "WMJ")); logger.info("user saved result == > " + isUserSaved);
 /** * 删除用户 */ client.deleteByUserId(1002);
 transport.close();
 } catch (TTransportException e) { logger.severe("TTransportException==>" + e.getLocalizedMessage()); } catch (UserNotFoundException e) { logger.severe("UserNotFoundException==>" + e.getLocalizedMessage()); } catch (TException e) { logger.severe("TException==>" + e.getLocalizedMessage()); } }}

7.3 测试

服务端控制台输出

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.六月 09, 2017 8:57:26 下午 com.xxx.tutorial.thrift.server.THsHaServerExample main信息: UserService TSimpleServer start ....六月 09, 2017 8:57:43 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl findUsersByName信息: 方法findUsersByName的参数name的内容==>wang六月 09, 2017 8:57:43 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl save信息: 方法save的参数user的内容==>User(userId:101, name:WMJ)六月 09, 2017 8:57:43 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl deleteByUserId信息: 方法deleteByUserId的参数userId的内容==>1002

客户端控制台输出

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.Received 1六月 09, 2017 8:57:43 下午 com.xxx.tutorial.thrift.client.UserClient2 main信息: client.findUsersByName()方法結果 == >[User(userId:1, name:Wang), User(userId:2, name:Mengjun)]Received 2六月 09, 2017 8:57:43 下午 com.xxx.tutorial.thrift.client.UserClient2 main信息: user saved result == > trueReceived 3六月 09, 2017 8:57:43 下午 com.xxx.tutorial.thrift.client.UserClient2 main严重: UserNotFoundException==>userId=1002的用户不存在

八、Nifty服务类型Facebook还开源了Nifty -- 一种基于netty的thrift服务端和客户端实现。

Nifty是facebook公司开源的，基于netty的thrift服务端和客户端实现。

使用Nifty，我们只要只要导入Nifty的jar包即可。

 <dependency> <groupId>com.facebook.nifty</groupId> <artifactId>nifty-core</artifactId> <version>0.10.0</version> </dependency>

8.1 服务端

package com.xxx.tutorial.thrift.server;
import org.apache.thrift.TProcessor;
import com.facebook.nifty.core.NettyServerTransport;import com.facebook.nifty.core.ThriftServerDef;import com.facebook.nifty.core.ThriftServerDefBuilder;import com.xxx.tutorial.thrift.service.UserService;import com.xxx.tutorial.thrift.service.impl.UserServiceImpl;
public class NiftyServer {
 public static void main(String[] args) {  // Create the handler UserService.Iface userServiceImpl = new UserServiceImpl();
 // Create the processor TProcessor processor = new UserService.Processor<>(userServiceImpl);
 // Build the server definition ThriftServerDef serverDef = new ThriftServerDefBuilder().withProcessor(processor).listen(9123).build();
 // Create the server transport final NettyServerTransport server = new NettyServerTransport(serverDef);
 // Create netty boss and executor thread pools/* ExecutorService bossExecutor = Executors.newCachedThreadPool(); ExecutorService workerExecutor = Executors.newCachedThreadPool();
 // Start the server server.start(bossExecutor, workerExecutor);*/ System.out.println("启动~~~"); server.start();
 // Arrange to stop the server at shutdown Runtime.getRuntime().addShutdownHook(new Thread() { @Override public void run() { try { server.stop(); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } } }); }}

8.2 客户端

如下示例给出NiftyClient来完成调用，使用NiftyClient需要导入相关jar包。

 <dependency> <groupId>com.facebook.nifty</groupId> <artifactId>nifty-client</artifactId> <version>0.10.0</version> </dependency>

package com.xxx.tutorial.thrift.client;
import java.net.InetSocketAddress;import java.util.List;import java.util.logging.Logger;
import org.apache.thrift.TException;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.transport.TTransport;import org.apache.thrift.transport.TTransportException;
import com.facebook.nifty.client.NiftyClient;import com.xxx.tutorial.thrift.entity.User;import com.xxx.tutorial.thrift.service.UserService;
public class ThriftNiftyClient {
 private static final Logger logger = Logger.getLogger(ThriftNiftyClient.class.getName());
 @SuppressWarnings({ "resource" }) public static void main(String[] args) {
 NiftyClient niftyClient = new NiftyClient(); InetSocketAddress address = new InetSocketAddress("127.0.0.1", 9123); try { TTransport transport = niftyClient.connectSync(address); TBinaryProtocol tp = new TBinaryProtocol(transport); UserService.Client userService = new UserService.Client(tp); logger.info("userService.findUsersByName 方法调用~"); List<User> users = userService.findUsersByName("wang"); logger.info("userService.findUsersByName 调用结果~"); logger.info("users ==> " + users);
 } catch (TTransportException e) { logger.severe("TTransportException ==> " + e.getMessage()); } catch (InterruptedException e) { logger.severe("InterruptedException ==> " + e.getMessage()); } catch (TException e) { logger.severe("TException ==> " + e.getMessage()); } }}

8.3 测试

服务端控制台输出

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.启动~~~六月 09, 2017 9:01:44 下午 com.xxx.tutorial.thrift.service.impl.UserServiceImpl findUsersByName信息: 方法findUsersByName的参数name的内容==>wang

客户端控制台输出

六月 09, 2017 9:01:44 下午 com.xxx.tutorial.thrift.client.ThriftNiftyClient main信息: userService.findUsersByName 方法调用~Received 1六月 09, 2017 9:01:44 下午 com.xxx.tutorial.thrift.client.ThriftNiftyClient main信息: userService.findUsersByName 调用结果~六月 09, 2017 9:01:44 下午 com.xxx.tutorial.thrift.client.ThriftNiftyClient main信息: users ==> [User(userId:1, name:Wang), User(userId:2, name:Mengjun)]

至此，Thrift多种服务端的编写已经完成，但是上述Client端的编写基本上采用同步来实现~

下面给出一个异步客户端的示例。

九、异步客户端

package com.xxx.tutorial.thrift.client;
import java.util.List;import java.util.concurrent.CountDownLatch;import java.util.concurrent.TimeUnit;import java.util.logging.Logger;
import org.apache.thrift.async.AsyncMethodCallback;import org.apache.thrift.async.TAsyncClientManager;import org.apache.thrift.protocol.TBinaryProtocol;import org.apache.thrift.protocol.TProtocolFactory;import org.apache.thrift.transport.TNonblockingSocket;import org.apache.thrift.transport.TNonblockingTransport;
import com.xxx.tutorial.thrift.entity.User;import com.xxx.tutorial.thrift.service.UserService;
public class UserAsynClient {
 private static final Logger logger = Logger.getLogger(UserAsynClient.class.getName());
 public static void main(String[] args) { try { TAsyncClientManager clientManager = new TAsyncClientManager(); TNonblockingTransport transport = new TNonblockingSocket("127.0.0.1", 9123, 3000);
 TProtocolFactory tprotocol = new TBinaryProtocol.Factory();
 UserService.AsyncClient asyncClient = new UserService.AsyncClient(tprotocol, clientManager, transport);
 System.out.println("Client start .....");
 CountDownLatch latch = new CountDownLatch(1); /*AsynCallback_FindUsersByName callBack = new AsynCallback_FindUsersByName(latch); asyncClient.findUsersByName("wang", callBack);*/  AsynCallback_SaveUser saveUserCallBack = new AsynCallback_SaveUser(latch); asyncClient.save(new User(10001,"A name"), saveUserCallBack);
 System.out.println("call method findUsersByName_call .... end");
 boolean wait = latch.await(30, TimeUnit.SECONDS);
 System.out.println("latch.await =:" + wait);
 } catch (Exception e) { e.printStackTrace(); } System.out.println("startClient end."); }
 public static class AsynCallback_FindUsersByName implements AsyncMethodCallback<List<User>> {
 private CountDownLatch latch;
 public AsynCallback_FindUsersByName(CountDownLatch latch) { this.latch = latch; }
 public void onComplete(List<User> response) {
 logger.info("onComplete ==> findUsersByName_call"); try { logger.info("findUsersByName_call response ==> " + response.toString()); } finally { latch.countDown(); }
 }
 public void onError(Exception exception) { logger.severe("onError ==> " + exception.getMessage()); latch.countDown(); } }
 public static class AsynCallback_SaveUser implements AsyncMethodCallback<Boolean> {
 private CountDownLatch latch;
 public AsynCallback_SaveUser(CountDownLatch latch) { this.latch = latch; }
 public void onComplete(Boolean response) { logger.info("onComplete ==> save_call"); try { logger.info("save_call response ==> " + response.toString()); } finally { latch.countDown(); } }  public void onError(Exception exception) { logger.severe("onError ==> " + exception.getMessage()); latch.countDown(); }
 }}

上述采用AsyncClient 来完成调用， 使用AsyncClient 的时候，需要编写一个用于回调的线程类。

UserService.AsyncClient asyncClient = new UserService.AsyncClient(tprotocol, clientManager, transport);

使用上述给出的NiftyServer类，启动服务，然后运行UserAsynClient类，就完成一个异步客户端示例。

运行结果~

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.Client start .....call method findUsersByName_call .... endReceived 0六月 12, 2017 10:52:44 上午 com.xxx.tutorial.thrift.client.UserAsynClient$AsynCallback_SaveUser onComplete信息: onComplete ==> save_call六月 12, 2017 10:52:44 上午 com.xxx.tutorial.thrift.client.UserAsynClient$AsynCallback_SaveUser onComplete信息: save_call response ==> truelatch.await =:truestartClient end.

至此，本篇博文的目标内容就完成了。

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