python中grpc配合asyncio使用
python中grpc配置asyncio使用
-
安装grpclib
pip3 install grpclib
-
protoc编译.proto文件,生成源码文件
python -m grpc_tools.protoc -I. --python_out=. --grpclib_python_out=. helloworld.proto
grpclib github官网 -
helloworld.proto文件代码
syntax = "proto3";
option go_package = ".;proto";
service Greeter {
rpc SayHello(HelloRequest) returns (HelloReply);
}
message HelloRequest {
string name = 1;
}
message HelloReply {
string message = 1;
}
- server.py
import asyncio
# from grpclib.utils import graceful_exit
from grpclib.server import Server
# generated by protoc
from grpclib_test.helloworld_pb2 import HelloReply
from grpclib_test.helloworld_grpc import GreeterBase
class Greeter(GreeterBase):
async def SayHello(self, stream):
request = await stream.recv_message()
message = f'Hello, {request.name}!'
await stream.send_message(HelloReply(message=message))
async def main(*, host='127.0.0.1', port=50051):
server = Server([Greeter()])
# Note: graceful_exit isn't supported in Windows
# with graceful_exit([server]):
await server.start(host, port)
print(f'Serving on {host}:{port}')
await server.wait_closed()
if __name__ == '__main__':
asyncio.run(main())
- client.py
import asyncio
from grpclib.client import Channel
# generated by protoc
from grpclib_test.helloworld_pb2 import HelloRequest, HelloReply
from grpclib_test.helloworld_grpc import GreeterStub
async def main():
async with Channel('127.0.0.1', 50051) as channel:
greeter = GreeterStub(channel)
reply = await greeter.SayHello(HelloRequest(name="马亚南"))
print(reply.message)
if __name__ == '__main__':
asyncio.run(main())
总结:客户端可以使用asyncio发起连接,服务端使用了asyncio可以维护大量的连接。
疑问:这个会影响go和python之间的相互调用吗?
我们用go client请求一下试试:
package main
import (
"context"
"goRPC/grpc_test/proto"
"google.golang.org/grpc"
)
func main() {
conn, _ := grpc.Dial("127.0.0.1:50051", grpc.WithInsecure())
defer conn.Close()
client := proto.NewGreeterClient(conn)
rsp, _ := client.SayHello(context.Background(), &proto.HelloRequest{Name: "马亚南"})
print(rsp.Message)
}
请求一切正常。
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】凌霞软件回馈社区,博客园 & 1Panel & Halo 联合会员上线
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】博客园社区专享云产品让利特惠,阿里云新客6.5折上折
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步
· 在鹅厂做java开发是什么体验
· 百万级群聊的设计实践
· WPF到Web的无缝过渡:英雄联盟客户端的OpenSilver迁移实战
· 永远不要相信用户的输入:从 SQL 注入攻防看输入验证的重要性
· 浏览器原生「磁吸」效果!Anchor Positioning 锚点定位神器解析