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