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