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# Copyright 2019 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.
"""An example of compression on the client side with gRPC."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import argparse
import logging
import grpc
from examples.protos import helloworld_pb2
from examples.protos import helloworld_pb2_grpc
_DESCRIPTION = 'A client capable of compression.'
_COMPRESSION_OPTIONS = {
"none": grpc.Compression.NoCompression,
"deflate": grpc.Compression.Deflate,
"gzip": grpc.Compression.Gzip,
}
_LOGGER = logging.getLogger(__name__)
def run_client(channel_compression, call_compression, target):
with grpc.insecure_channel(target,
compression=channel_compression) as channel:
stub = helloworld_pb2_grpc.GreeterStub(channel)
response = stub.SayHello(helloworld_pb2.HelloRequest(name='you'),
compression=call_compression,
wait_for_ready=True)
print("Response: {}".format(response))
def main():
parser = argparse.ArgumentParser(description=_DESCRIPTION)
parser.add_argument('--channel_compression',
default='none',
nargs='?',
choices=_COMPRESSION_OPTIONS.keys(),
help='The compression method to use for the channel.')
parser.add_argument(
'--call_compression',
default='none',
nargs='?',
choices=_COMPRESSION_OPTIONS.keys(),
help='The compression method to use for an individual call.')
parser.add_argument('--server',
default='localhost:50051',
type=str,
nargs='?',
help='The host-port pair at which to reach the server.')
args = parser.parse_args()
channel_compression = _COMPRESSION_OPTIONS[args.channel_compression]
call_compression = _COMPRESSION_OPTIONS[args.call_compression]
run_client(channel_compression, call_compression, args.server)
if __name__ == "__main__":
logging.basicConfig()
main()
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