examples/python/helloworld/async_greeter_server_with_reflection.py

# Copyright 2020 The gRPC Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""The reflection-enabled version of gRPC AsyncIO helloworld.Greeter server."""

import asyncio
import logging

import grpc
from grpc_reflection.v1alpha import reflection

import helloworld_pb2
import helloworld_pb2_grpc


class Greeter(helloworld_pb2_grpc.GreeterServicer):

    async def SayHello(
            self, request: helloworld_pb2.HelloRequest,
            context: grpc.aio.ServicerContext) -> helloworld_pb2.HelloReply:
        return helloworld_pb2.HelloReply(message='Hello, %s!' % request.name)


async def serve() -> None:
    server = grpc.aio.server()
    helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server)
    SERVICE_NAMES = (
        helloworld_pb2.DESCRIPTOR.services_by_name['Greeter'].full_name,
        reflection.SERVICE_NAME,
    )
    reflection.enable_server_reflection(SERVICE_NAMES, server)
    server.add_insecure_port('[::]:50051')
    await server.start()
    await server.wait_for_termination()


if __name__ == '__main__':
    logging.basicConfig()
    asyncio.run(serve())