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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.
"""Shared implementation."""
import logging
import six
import grpc
from grpc._cython import cygrpc
_LOGGER = logging.getLogger(__name__)
CYGRPC_CONNECTIVITY_STATE_TO_CHANNEL_CONNECTIVITY = {
cygrpc.ConnectivityState.idle:
grpc.ChannelConnectivity.IDLE,
cygrpc.ConnectivityState.connecting:
grpc.ChannelConnectivity.CONNECTING,
cygrpc.ConnectivityState.ready:
grpc.ChannelConnectivity.READY,
cygrpc.ConnectivityState.transient_failure:
grpc.ChannelConnectivity.TRANSIENT_FAILURE,
cygrpc.ConnectivityState.shutdown:
grpc.ChannelConnectivity.SHUTDOWN,
}
CYGRPC_STATUS_CODE_TO_STATUS_CODE = {
cygrpc.StatusCode.ok: grpc.StatusCode.OK,
cygrpc.StatusCode.cancelled: grpc.StatusCode.CANCELLED,
cygrpc.StatusCode.unknown: grpc.StatusCode.UNKNOWN,
cygrpc.StatusCode.invalid_argument: grpc.StatusCode.INVALID_ARGUMENT,
cygrpc.StatusCode.deadline_exceeded: grpc.StatusCode.DEADLINE_EXCEEDED,
cygrpc.StatusCode.not_found: grpc.StatusCode.NOT_FOUND,
cygrpc.StatusCode.already_exists: grpc.StatusCode.ALREADY_EXISTS,
cygrpc.StatusCode.permission_denied: grpc.StatusCode.PERMISSION_DENIED,
cygrpc.StatusCode.unauthenticated: grpc.StatusCode.UNAUTHENTICATED,
cygrpc.StatusCode.resource_exhausted: grpc.StatusCode.RESOURCE_EXHAUSTED,
cygrpc.StatusCode.failed_precondition: grpc.StatusCode.FAILED_PRECONDITION,
cygrpc.StatusCode.aborted: grpc.StatusCode.ABORTED,
cygrpc.StatusCode.out_of_range: grpc.StatusCode.OUT_OF_RANGE,
cygrpc.StatusCode.unimplemented: grpc.StatusCode.UNIMPLEMENTED,
cygrpc.StatusCode.internal: grpc.StatusCode.INTERNAL,
cygrpc.StatusCode.unavailable: grpc.StatusCode.UNAVAILABLE,
cygrpc.StatusCode.data_loss: grpc.StatusCode.DATA_LOSS,
}
STATUS_CODE_TO_CYGRPC_STATUS_CODE = {
grpc_code: cygrpc_code
for cygrpc_code, grpc_code in six.iteritems(
CYGRPC_STATUS_CODE_TO_STATUS_CODE)
}
def encode(s):
if isinstance(s, bytes):
return s
else:
return s.encode('utf8')
def decode(b):
if isinstance(b, bytes):
return b.decode('utf-8', 'replace')
return b
def _transform(message, transformer, exception_message):
if transformer is None:
return message
else:
try:
return transformer(message)
except Exception: # pylint: disable=broad-except
_LOGGER.exception(exception_message)
return None
def serialize(message, serializer):
return _transform(message, serializer, 'Exception serializing message!')
def deserialize(serialized_message, deserializer):
return _transform(serialized_message, deserializer,
'Exception deserializing message!')
def fully_qualified_method(group, method):
return '/{}/{}'.format(group, method)
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