Thrift的使用-Python

百科简介:Thrift是一种接口描述语言和二进制通讯协议,它被用来定义和创建跨语言的服务。它被当作一个远程过程调用(RPC)框架来使用,是由Facebook为“大规模跨语言服务开发”而开发的。它通过一个代码生成引擎联合了一个软件栈,来创建不同程度的、无缝的跨平台高效服务,可以使用C#C++(基于POSIX兼容系统)、Cappuccino、CocoaDelphiErlangGoHaskellJavaNode.jsOCamlPerlPHPPythonRubySmalltalk。虽然它以前是由Facebook开发的,但它现在是Apache软件基金会开源项目了。该实现被描述在2007年4月的一篇由Facebook发表的技术论文中,该论文现由Apache掌管。

thrift主页:http://thrift.apache.org

thrift下载:thrift-0.12.0.tar.gz 解压安装不多说^_^ (Mac用户直接使用$ brew install thrift 安装即可)

在python程序中使用thrift需要安装thrift模块,pip install thrift 即可

thrift 采用IDL(Interface Definition Language)来定义通用的服务接口,并通过生成不同的语言代理实现来达到跨语言、平台的功能。在thrift的IDL中可以定义以下一些类型:基本数据类型,结构体,容器,异常、服务。

const string HELLO_MAN = "man"
service HelloWorld {
    void ping(),
    string sayHello(),
    string sayMsg(1:string msg)
}

thrift脚本通过Thrift编译器生成所要求的python开发语言代码。即:

thrift  -r  --gen py  helloworld.thrift

执行后生成的文件目录

Thrift是一个典型的CS结构,客户端和服务端可以使用不同的语言开发,本文以python为例:

PythonServer.py

import sys

sys.path.append('./gen-py')

from helloworld import HelloWorld
from helloworld.ttypes import *

from thrift.transport import TSocket
from thrift.transport import TTransport
from thrift.protocol import TBinaryProtocol
from thrift.server import TServer

import socket


class HelloWorldHandler:
    def __init__(self):
        self.log = {}

    def ping(self):
        print("ping()")

    def sayHello(self):
        print("sayHello()")
        return "say hello from " + socket.gethostbyname(socket.gethostname())

    def sayMsg(self, msg):
        print("sayMsg(" + msg + ")")
        return "say " + msg + " from " + socket.gethostbyname(socket.gethostname())


handler = HelloWorldHandler()
processor = HelloWorld.Processor(handler)
transport = TSocket.TServerSocket('127.0.0.1', 30303)
tfactory = TTransport.TBufferedTransportFactory()
pfactory = TBinaryProtocol.TBinaryProtocolFactory()

server = TServer.TSimpleServer(processor, transport, tfactory, pfactory)

print("Starting python server...")
server.serve()
print("done!")

PythonClient.py

import sys

sys.path.append('./gen-py')

from helloworld import HelloWorld
from helloworld.ttypes import *
from helloworld.constants import *

from thrift import Thrift
from thrift.transport import TSocket
from thrift.transport import TTransport
from thrift.protocol import TBinaryProtocol

try:
    # Make socket
    transport = TSocket.TSocket('127.0.0.1', 30303)

    # Buffering is critical. Raw sockets are very slow
    transport = TTransport.TBufferedTransport(transport)

    # Wrap in a protocol
    protocol = TBinaryProtocol.TBinaryProtocol(transport)

    # Create a client to use the protocol encoder
    client = HelloWorld.Client(protocol)

    # Connect!
    transport.open()

    client.ping()
    print("ping()")

    msg = client.sayHello()
    print(msg)
    msg = client.sayMsg(HELLO_MAN)
    print(msg)

    transport.close()
except Thrift.TException as tx:
    print(tx.message)

server端输出:

client端输出:

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转载自www.cnblogs.com/leadership/p/11649738.html