thrift 轻松实现多语言跨服务器通信

thrift是由facebook开发的轻量级跨语言的服务框架，现在已经移交到apache基金会下。和他类似的是google出的protocol buffer和ice。 thrift的一大优势就是支持的语言很丰富，它使用自己的IDL语言来描述服务接口和数据交换的格式。

官方网站：http://incubator.apache.org/thrift/

一、安装：

yum -y install gcc-c++ autoconf automake sysconftool boost /    boost-devel libtool perl-ExtUtils-MakeMaker gettext-base /    gettext gettext-devel liblocale-gettext-perl zlib-devel /    byacc bison flex pkgconfig python-devel  wget http://apache.freelamp.com/incubator/thrift/0.2.0-incubating/thrift-0.2.0-incubating.tar.gz ./bootstrap.sh ./configure --prefix=/usr/local/thrift --with-ruby=no --with-erlang=no --with-java=no --with-csharp=no --enable-gen-java=no --enable-gen-csharp=no --enable-gen-rb=no --enable-gen-erl=nomakemake install

、IDL描述：
 # 1.支持的变量类型 类型描述  bool#true, false  byte#8位的有符号整数  i16#16位的有符号整数  i32#32位的有符号整数  i64#64位的有符号整数  double#64位的浮点数  string#UTF-8编码的字符串  binary#字符数组  struct#结构体  list<type>#有序的元素列表，类似于STL的vector  set<type>#无序的不重复元素集，类似于STL的set  map<type1,type2>#key-value型的映射，类似于STL的map  exception#是一个继承于本地语言的exception基类  service#服务包含多个函数接口(纯虚函数)   # 2.摘一段例子上来，让瞧瞧这是啥东东。（本例子文件名为：tutorial.thrift，是本身带的教程。）include "shared.thrift"  namespace cpp tutorialnamespace java tutorialnamespace php tutorialnamespace perl tutorialnamespace smalltalk.category Thrift.Tutorial typedef i32 MyInteger const i32 INT32CONSTANT = 9853const map<string,string> MAPCONSTANT = {'hello':'world', 'goodnight':'moon'} enum Operation {  ADD = 1,  SUBTRACT = 2,  MULTIPLY = 3,  DIVIDE = 4} struct Work {  1: i32 num1 = 0,  2: i32 num2,  3: Operation op,  4: optional string comment,} exception InvalidOperation {  1: i32 what,  2: string why} service Calculator extends shared.SharedService {    void ping(),    i32 add(1:i32 num1, 2:i32 num2),    i32 calculate(1:i32 logid, 2:Work w) throws (1:InvalidOperation ouch),    oneway void zip() } # 3. 我们来写个 helloworld.thrift service HelloWorld{ string ping(1: string name), string getpng(),}
三、编译 helloworld：
/usr/local/thrift/bin/thrift -r --gen py helloworld.thrift/usr/local/thrift/bin/thrift -r --gen php helloworld.thrift#会在当前目录下生成 gen-* 目录。
四、编写服务器端：
import syssys.path.append('./gen-py') from helloworld import HelloWorldfrom helloworld.ttypes import * from thrift.transport import TSocketfrom thrift.transport import TTransportfrom thrift.protocol import TBinaryProtocolfrom thrift.server import TServer class HellowordHandler:def __init__ (self):pass def ping (self, name):print name + ' from server.'return "%s from server." % namedef getpng (self):f = open("./logo.png", "rb")c = f.read()f.close()return chandler = HellowordHandler()processor = HelloWorld.Processor(handler)transport = TSocket.TServerSocket(9090)tfactory = TTransport.TBufferedTransportFactory()pfactory = TBinaryProtocol.TBinaryProtocolFactory() server = TServer.TSimpleServer(processor, transport, tfactory, pfactory) # You could do one of these for a multithreaded server#server = TServer.TThreadedServer(processor, transport, tfactory, pfactory)#server = TServer.TThreadPoolServer(processor, transport, tfactory, pfactory) print 'Starting the server...'server.serve()print 'done.'
五、编写客户端：
<?phptry{ $GLOBALS['THRIFT_ROOT'] = './php/src'; require_once $GLOBALS['THRIFT_ROOT'].'/Thrift.php';require_once $GLOBALS['THRIFT_ROOT'].'/protocol/TBinaryProtocol.php';require_once $GLOBALS['THRIFT_ROOT'].'/transport/TSocket.php';require_once $GLOBALS['THRIFT_ROOT'].'/transport/THttpClient.php';require_once $GLOBALS['THRIFT_ROOT'].'/transport/TBufferedTransport.php';error_reporting(E_NONE);$GEN_DIR = './gen-php';require_once $GEN_DIR.'/helloworld/HelloWorld.php';error_reporting(E_ALL); $socket = new TSocket('*.*.*.*', 9090);$transport = new TBufferedTransport($socket, 1024, 1024);$protocol = new TBinaryProtocol($transport);$client = new HelloWorldClient($protocol); $transport->open(); $a = $client->ping('xyq ');echo $a; $transport->close(); } catch (TException $tx) {print 'TException: '.$tx->getMessage()."/n";} ?>
按上面的流程就可以写自己的thrift了，我使用py做服务端，用php做客户端，当然也可以使用c++来做服务端。