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 17 18import logging 19 20import grpc 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( 32 target="localhost:50051", 33 options=[ 34 ("grpc.lb_policy_name", "pick_first"), 35 ("grpc.enable_retries", 0), 36 ("grpc.keepalive_timeout_ms", 10000), 37 ], 38 ) as channel: 39 stub = helloworld_pb2_grpc.GreeterStub(channel) 40 # Timeout in seconds. 41 # Please refer gRPC Python documents for more detail. https://grpc.io/grpc/python/grpc.html 42 response = stub.SayHello( 43 helloworld_pb2.HelloRequest(name="you"), timeout=10 44 ) 45 print("Greeter client received: " + response.message) 46 47 48if __name__ == "__main__": 49 logging.basicConfig() 50 run() 51