python uses grpc and packages it into python module

xmlrpc is still a feasible solution
I. environment
python3.6
II. Installation module

pip3 install grpcio
pip3 install protobuf
pip3 install grpcio-tools

3. Prepare grpc configuration file grpcdatabase.proto
Directory structure:

The contents are as follows:

syntax = "proto3";
package grpcServer;
service Greeter {
    rpc GetSummary (Request) returns (Return) {} //Define the function to be called (GetSummary)+(Request) accept parameter + (Return) return parameter
    rpc GetSynonym (Request) returns (Return) {}
}

message Request {       //Parameter data type
    string content = 1;//text
    int32 code=2;      //Return status 0success; 1failed
}

message Return {       //Return data type
    string message = 1;//text
    int32 code=2;      //Return status 0success; 1failed
}
//Execute command + installation steps
//python3 -m grpc_tools.protoc -I. --python_out=grpc_base_models/ --grpc_python_out=grpc_base_models/ grpcdatabase.proto

Compile: generate grpcatabase? Pb2.py? Grpcdatabase? PB2? Grpc.py file

python3 -m grpc_tools.protoc -I. --python_out=grpc_base_models/ --grpc_python_out=grpc_base_models/ grpcdatabase.proto


Write server code:

# -*- coding: utf-8 -*-
# @author: chenhuachao
# @time: 2019/3/7
# Servers.py
import sys
sys.path.append('grpc_base_models')
import grpc
import time
from concurrent import futures
import grpcdatabase_pb2
import grpcdatabase_pb2_grpc
# from grpc_base_models import grpcdatabase_pb2
# from grpc_base_models import grpcdatabase_pb2_grpc

_SLEEP_TIME = 60
_HOST = "0.0.0.0"
_PORT = "19999"

class RpcServer(grpcdatabase_pb2_grpc.GreeterServicer):
    def GetContent(self, request, context):
        '''
        //Get article summary
        :param request:
        :param context:
        :return:
        '''
        try:
            _content = request.content
            code = 0
        except Exception as e:
            _content = str(e)
            code=1
        return grpcdatabase_pb2.Return(message=_content,code=code)

def server():
    if sys.argv.__len__()>=2:
        _PORT = sys.argv[1]
    else:
        _PORT = "19999"
    grpcServer = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
    grpcdatabase_pb2_grpc.add_GreeterServicer_to_server(RpcServer(), grpcServer)
    grpcServer.add_insecure_port("{0}:{1}".format(_HOST, _PORT))
    grpcServer.start()
    try:
        while True:
            time.sleep(_SLEEP_TIME)
    except KeyboardInterrupt:
        grpcServer.stop(0)

if __name__ == '__main__':
    server()

Write client code:

# -*- coding: utf-8 -*-
# @author: chenhuachao
# @time: 2019/3/7
# Client.py
import sys
import grpc
sys.path.append('grpc_base_models')
import grpcdatabase_pb2_grpc
import grpcdatabase_pb2
# from grpc_base_models import grpcdatabase_pb2_grpc
# from grpc_base_models import grpcdatabase_pb2

# _HOST = '192.168.3.191'
_HOST = '127.0.0.1'
_PORT = '19999'

def RpcClient(funcname,content):
    '''
    rpc Client program
    :param funcname: available funcname For the following two
        >>> GetContent  Get summary, parameters: content='text'
        *** Both of the above functions return message Attribute and code(1:failed 0:success)attribute
        >>> Return value: response.message   response.code
    :return:
    '''
    with grpc.insecure_channel("{0}:{1}".format(_HOST, _PORT)) as channel:
        client = grpcdatabase_pb2_grpc.GreeterStub(channel=channel)
        if hasattr(client,funcname):
            response = getattr(client,funcname)(grpcdatabase_pb2.Request(content=content))
        else:
            raise Exception(u"Function name error")
    print("message=" , response.message)
    print( "code=",response.code)
if __name__ == '__main__':
    text = u'''
    //Test text
    '''
    RpcClient('GetContent',text)

Run: Server.py and Client.py respectively to view the results

Each time the above server-side code is used, it depends on the two files grpcdatabase [PB2 *. Py. Therefore, we can package them as python modules. More convenient to use

Pack

Add the setup.py file in the root directory: structure chart

The contents of the setup.py file are as follows

# -*- coding: utf-8 -*-
# @author: chenhuachao
# @time: 2019/3/8
# setup.py

from setuptools import setup,find_packages
setup(
    name = "grpc_base_models",
    version = "0.0.1",
    keywords = ("pip", "pygrpc", "company", "chenhuachao"),
    description = "python Versions grpc Common module,For personal projects,For reference only",
    long_description="grpc server for python",
    license="MIT Licence",
    url="https://github.com/leizhu900516",
    author="chenhuachao",
    author_email="leizhu900516@163.com",
    packages = find_packages(),
    install_requires = [
        'grpcio==1.19.0',
        'grpcio-tools==1.19.0',
        'protobuf==3.7.0',
    ]
)

Pack:
python3 setup.py sdist is as follows:

Install: PIP install dist / grpc? Base? Models-0.0.1.tar.gz
Can be used in python scripts
By reference:

from grpc_base_models import grpcdatabase_pb2_grpc
from grpc_base_models import grpcdatabase_pb2

**Attach code address grpc instance of python

Tags: Python Attribute pip github

Posted on Tue, 03 Dec 2019 13:56:25 -0500 by bogdaniel