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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.
import oslo_messaging as messaging
from osprofiler import profiler
from trove.common.context import TroveContext
class TroveSerializer(messaging.Serializer):
"""The Trove serializer class that handles class inheritance and base
serializers.
"""
def __init__(self, base):
self._base = base
def _serialize_entity(self, context, entity):
return entity
def serialize_entity(self, context, entity):
if self._base:
entity = self._base.serialize_entity(context, entity)
return self._serialize_entity(context, entity)
def _deserialize_entity(self, context, entity):
return entity
def deserialize_entity(self, context, entity):
entity = self._deserialize_entity(context, entity)
if self._base:
entity = self._base.deserialize_entity(context, entity)
return entity
def _serialize_context(self, context):
return context
def serialize_context(self, context):
if self._base:
context = self._base.serialize_context(context)
return self._serialize_context(context)
def _deserialize_context(self, context):
return context
def deserialize_context(self, context):
context = self._deserialize_context(context)
if self._base:
context = self._base.deserialize_context(context)
return context
class TroveRequestContextSerializer(TroveSerializer):
def _serialize_context(self, context):
_context = context.to_dict()
prof = profiler.get()
if prof:
trace_info = {
"hmac_key": prof.hmac_key,
"base_id": prof.get_base_id(),
"parent_id": prof.get_id()
}
_context.update({"trace_info": trace_info})
return _context
def _deserialize_context(self, context):
trace_info = context.pop("trace_info", None)
if trace_info:
profiler.init(**trace_info)
return TroveContext.from_dict(context)
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