1# Copyright 2019 The 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"""Send multiple greeting messages to the backend.""" 15 16from __future__ import absolute_import 17from __future__ import division 18from __future__ import print_function 19 20import argparse 21import logging 22 23import grpc 24 25helloworld_pb2, helloworld_pb2_grpc = grpc.protos_and_services( 26 "helloworld.proto" 27) 28 29 30def process(stub, request): 31 try: 32 response = stub.SayHello(request) 33 except grpc.RpcError as rpc_error: 34 print("Received error: %s" % rpc_error) 35 else: 36 print("Received message: %s" % response) 37 38 39def run(addr, n): 40 with grpc.insecure_channel(addr) as channel: 41 stub = helloworld_pb2_grpc.GreeterStub(channel) 42 request = helloworld_pb2.HelloRequest(name="you") 43 for _ in range(n): 44 process(stub, request) 45 46 47def main(): 48 parser = argparse.ArgumentParser() 49 parser.add_argument( 50 "--addr", 51 nargs=1, 52 type=str, 53 default="[::]:50051", 54 help="the address to request", 55 ) 56 parser.add_argument( 57 "-n", 58 nargs=1, 59 type=int, 60 default=10, 61 help="an integer for number of messages to sent", 62 ) 63 args = parser.parse_args() 64 run(addr=args.addr, n=args.n) 65 66 67if __name__ == "__main__": 68 logging.basicConfig() 69 main() 70