1# Copyright 2018 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"""gRPC Python helloworld.Greeter client with channel options and call timeout parameters.""" 15 16from __future__ import print_function 17import logging 18 19import grpc 20 21import helloworld_pb2 22import helloworld_pb2_grpc 23 24 25def run(): 26 # NOTE(gRPC Python Team): .close() is possible on a channel and should be 27 # used in circumstances in which the with statement does not fit the needs 28 # of the code. 29 # 30 # For more channel options, please see https://grpc.io/grpc/core/group__grpc__arg__keys.html 31 with grpc.insecure_channel(target='localhost:50051', 32 options=[('grpc.lb_policy_name', 'pick_first'), 33 ('grpc.enable_retries', 0), 34 ('grpc.keepalive_timeout_ms', 10000) 35 ]) as channel: 36 stub = helloworld_pb2_grpc.GreeterStub(channel) 37 # Timeout in seconds. 38 # Please refer gRPC Python documents for more detail. https://grpc.io/grpc/python/grpc.html 39 response = stub.SayHello(helloworld_pb2.HelloRequest(name='you'), 40 timeout=10) 41 print("Greeter client received: " + response.message) 42 43 44if __name__ == '__main__': 45 logging.basicConfig() 46 run() 47