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# Copyright 2016 Tesora, Inc.
# 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.
from oslo_serialization import jsonutils
from trove.common import crypto_utils as cu
from trove.common.rpc import serializer
# BUG(1650518): Cleanup in the Pike release
class SecureSerializer(serializer.TroveSerializer):
def __init__(self, base, key):
self._key = key
super(SecureSerializer, self).__init__(base)
def _serialize_entity(self, ctxt, entity):
if self._key is None:
return entity
estr = jsonutils.dumps(entity)
return cu.encode_data(cu.encrypt_data(estr, self._key))
def _deserialize_entity(self, ctxt, entity):
try:
if self._key is not None:
estr = cu.decrypt_data(cu.decode_data(entity), self._key)
entity = jsonutils.loads(estr)
except (ValueError, TypeError):
return entity
return entity
def _serialize_context(self, ctxt):
if self._key is None:
return ctxt
cstr = jsonutils.dumps(ctxt)
return {'context': cu.encode_data(cu.encrypt_data(cstr, self._key))}
def _deserialize_context(self, ctxt):
try:
if self._key is not None:
cstr = cu.decrypt_data(cu.decode_data(ctxt['context']),
self._key)
ctxt = jsonutils.loads(cstr)
except (ValueError, TypeError):
return ctxt
return ctxt
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