1# Copyright 2021 gRPC authors. 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14"""The Python AsyncIO implementation of the GRPC hellostreamingworld.MultiGreeter server.""" 15 16import asyncio 17import logging 18 19import grpc 20from hellostreamingworld_pb2 import HelloReply 21from hellostreamingworld_pb2 import HelloRequest 22from hellostreamingworld_pb2_grpc import MultiGreeterServicer 23from hellostreamingworld_pb2_grpc import add_MultiGreeterServicer_to_server 24 25NUMBER_OF_REPLY = 10 26 27 28class Greeter(MultiGreeterServicer): 29 async def sayHello( 30 self, request: HelloRequest, context: grpc.aio.ServicerContext 31 ) -> HelloReply: 32 logging.info("Serving sayHello request %s", request) 33 for i in range(NUMBER_OF_REPLY): 34 yield HelloReply(message=f"Hello number {i}, {request.name}!") 35 36 37async def serve() -> None: 38 server = grpc.aio.server() 39 add_MultiGreeterServicer_to_server(Greeter(), server) 40 listen_addr = "[::]:50051" 41 server.add_insecure_port(listen_addr) 42 logging.info("Starting server on %s", listen_addr) 43 await server.start() 44 await server.wait_for_termination() 45 46 47if __name__ == "__main__": 48 logging.basicConfig(level=logging.INFO) 49 asyncio.run(serve()) 50