protobuf python grpc簡單使用

python install grpcio

pip install grpcio-tools

// [python quickstart]

// python -m grpc_tools.protoc --python_out=. --grpc_python_out=. -i. helloworld.proto
// helloworld.proto
syntax =
"proto3"
;service greeter 
rpc sayhelloagain(hellorequest) returns (helloreply)
}message hellorequest 
message helloreply 

python -m grpc_tools.protoc --python_out=./ --grpc_python_out=./ -i./ hello.proto

# 實現 proto 檔案中定義的 greeterservicer

class

greeter

(hello_pb2_grpc.greeterservicer)

:# 實現 proto 檔案中定義的 rpc 呼叫

defsayhello

(self, request, context)

:return hello_pb2.helloreply(message =

'hello '

.format

(msg = request.name)

)def

sayhelloagain

(self, request, context)

:return hello_pb2.helloreply(message=

'hello '

.format

(msg = request.name)

)def

serve()

:# 啟動 rpc 服務

server = grpc.server(futures.threadpoolexecutor(max_workers=10)

) hello_pb2_grpc.add_greeterservicer_to_server(greeter(

), server)

server.add_insecure_port(

'[::]:50051'

) server.start(

)try

:while

true

: time.sleep(60*

60*24)

# one day in seconds

except keyboardinterrupt:

server.stop(0)

if __name__ ==

'__main__'

: serve(

)client:

import grpc

import hello_pb2
import hello_pb2_grpc
defrun()
:# 連線 rpc 伺服器
channel = grpc.insecure_channel(
'localhost:50051'
)# 呼叫 rpc 服務
stub = hello_pb2_grpc.greeterstub(channel)
response = stub.sayhello(hello_pb2.hellorequest(name=
'czl'))
print
("greeter client received: "
+ response.message)
response = stub.sayhelloagain(hello_pb2.hellorequest(name=
'daydaygo'))
print
("greeter client received: "
+ response.message)
if __name__ ==
'__main__'
:    run(
)

python hello_grpc_server.py

python test_grpc.py

至此，python版本 grpc demo成功執行

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