相关库的安装
$ python -m pip ×××tall grpcio
$ python -m pip ×××tall grpcio-tools googleapis-common-protos
Demo程序功能概述
服务器端存在Test_service类中定义了my_function方法,客户端通过gRPC协议进行远程调用;该方法实现的功能是将接受到的字符串内容全部改为大写并返回
PB接口描述文件定义
syntax = "proto3";
package data;
#定义数据结构
message Data{
string text=1;
}
#定义服务接口,即声明我要调用目标服务器上的哪个函数
service Test_service{
#定义调用函数名称、参数类型与返回数据类型
rpc my_function(Data) returns (Data) {}
}
编译
python3 -m grpc_tools.protoc -I. --python_out=. --grpc_python_out=. ./data.proto
客户端代码
#! /usr/bin/env python
# -*- coding: utf-8 -*-
import grpc
import data_pb2, data_pb2_grpc
_HOST = ‘127.0.0.1‘
_PORT = ‘8080‘
def run():
conn = grpc.×××ecure_channel(_HOST + ‘:‘ + _PORT)
client = data_pb2_grpc.Test_serviceStub(channel=conn)
response = client.my_function(data_pb2.Data(text=‘hello,world!‘))
print("received: " + response.text)
if __name__ == ‘__main__‘:
run()
服务器代码
#! /usr/bin/env python
# -*- coding: utf-8 -*-
import grpc
import time
from concurrent import futures
import data_pb2, data_pb2_grpc
_ONE_DAY_IN_SECONDS = 60 * 60 * 24
_HOST = ‘127.0.0.1‘
_PORT = ‘8080‘
class Test_service(data_pb2_grpc.Test_serviceServicer):
def my_function(self, request, context):
str = request.text
return data_pb2.Data(text=str.upper())
def serve():
grpcServer = grpc.server(futures.ThreadPoolExecutor(max_workers=4))
data_pb2_grpc.add_Test_serviceServicer_to_server(Test_service(), grpcServer)
grpcServer.add_×××ecure_port(_HOST + ‘:‘ + _PORT)
grpcServer.start()
try:
while True:
time.sleep(_ONE_DAY_IN_SECONDS)
except KeyboardInterrupt:
grpcServer.stop(0)
if __name__ == ‘__main__‘:
serve()
客户端运行结果
$ python3 client.py
received: HELLO,WORLD!
远程方法调用成功!
原文地址:https://blog.51cto.com/13384175/2409070
时间: 2024-10-10 06:03:56