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# Copyright 2020 The gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""The Python implementation of the GRPC helloworld.Greeter client."""
from __future__ import print_function
import argparse
import logging
import grpc
import grpc.experimental
import helloworld_pb2
import helloworld_pb2_grpc
_DESCRIPTION = "Get a greeting from a server."
def run(server_address, secure):
if secure:
fallback_creds = grpc.experimental.insecure_channel_credentials()
channel_creds = grpc.xds_channel_credentials(fallback_creds)
channel = grpc.secure_channel(server_address, channel_creds)
else:
channel = grpc.insecure_channel(server_address)
with channel:
stub = helloworld_pb2_grpc.GreeterStub(channel)
response = stub.SayHello(helloworld_pb2.HelloRequest(name='you'))
print("Greeter client received: " + response.message)
if __name__ == '__main__':
parser = argparse.ArgumentParser(description=_DESCRIPTION)
parser.add_argument("server",
default=None,
help="The address of the server.")
parser.add_argument(
"--xds-creds",
action="store_true",
help="If specified, uses xDS credentials to connect to the server.")
args = parser.parse_args()
logging.basicConfig()
run(args.server, args.xds_creds)
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