仿照别人代码实现
1.新建python项目,创建文件夹
编辑helloworld.proto文件
syntax = "proto3"; package rpc_package; // define a service service HelloWorldService { // define the interface and data type rpc SayHello (HelloRequest) returns (HelloReply) {} } // define the data type of request message HelloRequest { string name = 1; } // define the data type of response message HelloReply { string message = 1; }
执行,生成rpc_package文件夹下的两个文件
python -m grpc_tools.protoc -I=./protos --python_out=./rpc_package --grpc_python_out=./rpc_package ./protos/helloworld.proto
2.安装模块
python -m pip install grpcio python -m pip install grpcio-tools
3.编辑server.py和lient.py文件
hello_server.py
#!/usr/bin/env python # -*-coding: utf-8 -*- from concurrent import futures import grpc import logging import time from rpc_package.helloworld_pb2_grpc import add_HelloWorldServiceServicer_to_server, \ HelloWorldServiceServicer from rpc_package.helloworld_pb2 import HelloRequest, HelloReply class Hello(HelloWorldServiceServicer): # 这里实现我们定义的接口 def SayHello(self, request, context): return HelloReply(message='Hello, %s!' % request.name) def serve(): # 这里通过thread pool来并发处理server的任务 server = grpc.server(futures.ThreadPoolExecutor(max_workers=10)) # 将对应的任务处理函数添加到rpc server中 add_HelloWorldServiceServicer_to_server(Hello(), server) # 这里使用的非安全接口,世界gRPC支持TLS/SSL安全连接,以及各种鉴权机制 server.add_insecure_port('[::]:50000') server.start() try: while True: time.sleep(60 * 60 * 24) except KeyboardInterrupt: server.stop(0) if __name__ == "__main__": logging.basicConfig() serve()
编辑hello_client.py
#!/usr/bin/env python # -*- coding: utf-8 -*- from __future__ import print_function import logging import grpc from rpc_package.helloworld_pb2 import HelloRequest, HelloReply from rpc_package.helloworld_pb2_grpc import HelloWorldServiceStub def run(): # 使用with语法保证channel自动close with grpc.insecure_channel('localhost:50000') as channel: # 客户端通过stub来实现rpc通信 stub = HelloWorldServiceStub(channel) # 客户端必须使用定义好的类型,这里是HelloRequest类型 response = stub.SayHello(HelloRequest(name='eric')) print ("hello client received: " + response.message) if __name__ == "__main__": logging.basicConfig() run()
4.执行
窗口1,先执行python hello_server.py
窗口2,执行 python hello_client.py
输出 hello client received: Hello, eric! 成功