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 client.""" 15 16from __future__ import print_function 17import logging 18 19import grpc 20 21import helloworld_pb2 22import helloworld_pb2_grpc 23import default_value_client_interceptor 24 25 26def run(): 27 default_value = helloworld_pb2.HelloReply( 28 message='Hello from your local interceptor!') 29 default_value_interceptor = default_value_client_interceptor.DefaultValueClientInterceptor( 30 default_value) 31 # NOTE(gRPC Python Team): .close() is possible on a channel and should be 32 # used in circumstances in which the with statement does not fit the needs 33 # of the code. 34 with grpc.insecure_channel('localhost:50051') as channel: 35 intercept_channel = grpc.intercept_channel(channel, 36 default_value_interceptor) 37 stub = helloworld_pb2_grpc.GreeterStub(intercept_channel) 38 response = stub.SayHello(helloworld_pb2.HelloRequest(name='you')) 39 print("Greeter client received: " + response.message) 40 41 42if __name__ == '__main__': 43 logging.basicConfig() 44 run() 45