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 time
18
19import grpc
20
21import helloworld_pb2
22import helloworld_pb2_grpc
23from request_header_validator_interceptor import RequestHeaderValidatorInterceptor
24
25_ONE_DAY_IN_SECONDS = 60 * 60 * 24
26
27
28class Greeter(helloworld_pb2_grpc.GreeterServicer):
29
30    def SayHello(self, request, context):
31        return helloworld_pb2.HelloReply(message='Hello, %s!' % request.name)
32
33
34def serve():
35    header_validator = RequestHeaderValidatorInterceptor(
36        'one-time-password', '42', grpc.StatusCode.UNAUTHENTICATED,
37        'Access denied!')
38    server = grpc.server(
39        futures.ThreadPoolExecutor(max_workers=10),
40        interceptors=(header_validator,))
41    helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server)
42    server.add_insecure_port('[::]:50051')
43    server.start()
44    try:
45        while True:
46            time.sleep(_ONE_DAY_IN_SECONDS)
47    except KeyboardInterrupt:
48        server.stop(0)
49
50
51if __name__ == '__main__':
52    serve()
53