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 logging 19 20import grpc 21import header_manipulator_client_interceptor 22import helloworld_pb2 23import helloworld_pb2_grpc 24 25 26def run(): 27 header_adder_interceptor = ( 28 header_manipulator_client_interceptor.header_adder_interceptor( 29 "one-time-password", "42" 30 ) 31 ) 32 # NOTE(gRPC Python Team): .close() is possible on a channel and should be 33 # used in circumstances in which the with statement does not fit the needs 34 # of the code. 35 with grpc.insecure_channel("localhost:50051") as channel: 36 intercept_channel = grpc.intercept_channel( 37 channel, header_adder_interceptor 38 ) 39 stub = helloworld_pb2_grpc.GreeterStub(intercept_channel) 40 response = stub.SayHello(helloworld_pb2.HelloRequest(name="you")) 41 print("Greeter client received: " + response.message) 42 43 44if __name__ == "__main__": 45 logging.basicConfig() 46 run() 47