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 header_manipulator_client_interceptor 24 25 26def run(): 27 header_adder_interceptor = header_manipulator_client_interceptor.header_adder_interceptor( 28 'one-time-password', '42') 29 # NOTE(gRPC Python Team): .close() is possible on a channel and should be 30 # used in circumstances in which the with statement does not fit the needs 31 # of the code. 32 with grpc.insecure_channel('localhost:50051') as channel: 33 intercept_channel = grpc.intercept_channel(channel, 34 header_adder_interceptor) 35 stub = helloworld_pb2_grpc.GreeterStub(intercept_channel) 36 response = stub.SayHello(helloworld_pb2.HelloRequest(name='you')) 37 print("Greeter client received: " + response.message) 38 39 40if __name__ == '__main__': 41 logging.basicConfig() 42 run() 43