1# Copyright 2017 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 implementation of the GRPC helloworld.Greeter server.""" 15 16from concurrent import futures 17import logging 18 19import grpc 20import helloworld_pb2 21import helloworld_pb2_grpc 22from request_header_validator_interceptor import ( 23 RequestHeaderValidatorInterceptor, 24) 25 26 27class Greeter(helloworld_pb2_grpc.GreeterServicer): 28 def SayHello(self, request, context): 29 return helloworld_pb2.HelloReply(message="Hello, %s!" % request.name) 30 31 32def serve(): 33 header_validator = RequestHeaderValidatorInterceptor( 34 "one-time-password", 35 "42", 36 grpc.StatusCode.UNAUTHENTICATED, 37 "Access denied!", 38 ) 39 server = grpc.server( 40 futures.ThreadPoolExecutor(max_workers=10), 41 interceptors=(header_validator,), 42 ) 43 helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server) 44 server.add_insecure_port("[::]:50051") 45 server.start() 46 server.wait_for_termination() 47 48 49if __name__ == "__main__": 50 logging.basicConfig() 51 serve() 52