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