解析tcp交互thrift的使用实例

• 安装thrift 从官网下载 然后按照./configure，make,make install 方式进行安装，其他系统可以参照官网http://thrift.apache.org/docs/install/

• 定义thrift文件， 相当于通讯双方的接口定义，

  bool Boolean, one byte * i8 (byte) Signed 8-bit integer * i16 Signed 16-bit integer *
   i32 Signed 32-bit integer *
   i64 Signed 64-bit integer * 
  double 64-bit floating point value * string String * binary Blob (byte array) 
  * map Map from one type to another 
  * list Ordered list of one type 
  * set Set of unique elements of one type

• 用thrift生成关于thrift定义的代码，对应各种语言，我这主要是python，也可以其他的c++,java，命令是thrift --gen

• server和client的编写，server要多考虑无阻塞，多进程，保证服务正常,调用thrift生成的类，对应定义好的数据类型。

  def init_handler():    """ sub-process init handler """
      signal.signal(signal.SIGINT, signal.SIG_DFL)
      signal.signal(signal.SIGTERM, signal.SIG_DFL)
      signal.signal(signal.SIGHUP, signal.SIG_DFL)
      signal.signal(signal.SIGUSR1, debug)def main():    """ The main entrance """
      port = sys.argv[1]
      signal.signal(signal.SIGINT, exit_signal_handler)
      signal.signal(signal.SIGTERM, exit_signal_handler)
      signal.signal(signal.SIGHUP, exit_signal_handler)
      signal.signal(signal.SIGUSR1, debug)
      gc.set_threshold(20000, 10, 10)
      handler = MaitreyaHandler()
      processor = Maitreya.Processor(handler)
      transport = TSocket.TServerSocket(port=port)
      tfactory = TTransport.TBufferedTransportFactory()
      pfactory = TBinaryProtocol.TBinaryProtocolFactory()    # server = TProcessPoolServer(processor, transport, tfactory, pfactory)
      server = TGeventServer.TGeventProcessPoolServer(processor, transport, tfactory, pfactory)
      server.setNumWorkers(WORKER_NUM)
      server.setPostForkCallback(init_handler)    print "server started..."
      server.serve()

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