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# Copyright 2016 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.
"""Tests server and client side compression."""
import unittest
import grpc
from grpc import _grpcio_metadata
from tests.unit import test_common
from tests.unit.framework.common import test_constants
_UNARY_UNARY = '/test/UnaryUnary'
_STREAM_STREAM = '/test/StreamStream'
def handle_unary(request, servicer_context):
servicer_context.send_initial_metadata([('grpc-internal-encoding-request',
'gzip')])
return request
def handle_stream(request_iterator, servicer_context):
servicer_context.send_initial_metadata([('grpc-internal-encoding-request',
'gzip')])
return
yield
class _MethodHandler(grpc.RpcMethodHandler):
def __init__(self, request_streaming, response_streaming):
self.request_streaming = request_streaming
self.response_streaming = response_streaming
self.request_deserializer = None
self.response_serializer = None
self.unary_unary = None
self.unary_stream = None
self.stream_unary = None
self.stream_stream = None
if self.request_streaming and self.response_streaming:
self.stream_stream = lambda x, y: handle_stream(x, y)
elif not self.request_streaming and not self.response_streaming:
self.unary_unary = lambda x, y: handle_unary(x, y)
class _GenericHandler(grpc.GenericRpcHandler):
def service(self, handler_call_details):
if handler_call_details.method == _UNARY_UNARY:
return _MethodHandler(False, False)
elif handler_call_details.method == _STREAM_STREAM:
return _MethodHandler(True, True)
else:
return None
class CompressionTest(unittest.TestCase):
def setUp(self):
self._server = test_common.test_server()
self._server.add_generic_rpc_handlers((_GenericHandler(),))
self._port = self._server.add_insecure_port('[::]:0')
self._server.start()
def testUnary(self):
request = b'\x00' * 100
# Client -> server compressed through default client channel compression
# settings. Server -> client compressed via server-side metadata setting.
# TODO(https://github.com/grpc/grpc/issues/4078): replace the "1" integer
# literal with proper use of the public API.
compressed_channel = grpc.insecure_channel(
'localhost:%d' % self._port,
options=[('grpc.default_compression_algorithm', 1)])
multi_callable = compressed_channel.unary_unary(_UNARY_UNARY)
response = multi_callable(request)
self.assertEqual(request, response)
# Client -> server compressed through client metadata setting. Server ->
# client compressed via server-side metadata setting.
# TODO(https://github.com/grpc/grpc/issues/4078): replace the "0" integer
# literal with proper use of the public API.
uncompressed_channel = grpc.insecure_channel(
'localhost:%d' % self._port,
options=[('grpc.default_compression_algorithm', 0)])
multi_callable = compressed_channel.unary_unary(_UNARY_UNARY)
response = multi_callable(
request, metadata=[('grpc-internal-encoding-request', 'gzip')])
self.assertEqual(request, response)
def testStreaming(self):
request = b'\x00' * 100
# TODO(https://github.com/grpc/grpc/issues/4078): replace the "1" integer
# literal with proper use of the public API.
compressed_channel = grpc.insecure_channel(
'localhost:%d' % self._port,
options=[('grpc.default_compression_algorithm', 1)])
multi_callable = compressed_channel.stream_stream(_STREAM_STREAM)
call = multi_callable(iter([request] * test_constants.STREAM_LENGTH))
for response in call:
self.assertEqual(request, response)
if __name__ == '__main__':
unittest.main(verbosity=2)
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