84 lines
2.6 KiB
Python
84 lines
2.6 KiB
Python
# Copyright 2015 Huawei Technologies Co., Ltd.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import six
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from oslo_messaging import serializer
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ATTR_NOT_SPECIFIED = object()
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class Mapping(object):
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def __init__(self, mapping):
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self.direct_mapping = mapping
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self.reverse_mapping = {}
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for key, value in six.iteritems(mapping):
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self.reverse_mapping[value] = key
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_SINGLETON_MAPPING = Mapping({
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ATTR_NOT_SPECIFIED: "@@**ATTR_NOT_SPECIFIED**@@",
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})
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class TricircleSerializer(serializer.Serializer):
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def __init__(self, base=None):
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super(TricircleSerializer, self).__init__()
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self._base = base
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def serialize_entity(self, context, entity):
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if isinstance(entity, dict):
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for key, value in six.iteritems(entity):
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entity[key] = self.serialize_entity(context, value)
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elif isinstance(entity, list):
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for i, item in enumerate(entity):
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entity[i] = self.serialize_entity(context, item)
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elif entity in _SINGLETON_MAPPING.direct_mapping:
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entity = _SINGLETON_MAPPING.direct_mapping[entity]
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if self._base is not None:
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entity = self._base.serialize_entity(context, entity)
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return entity
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def deserialize_entity(self, context, entity):
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if isinstance(entity, dict):
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for key, value in six.iteritems(entity):
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entity[key] = self.deserialize_entity(context, value)
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elif isinstance(entity, list):
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for i, item in enumerate(entity):
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entity[i] = self.deserialize_entity(context, item)
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elif entity in _SINGLETON_MAPPING.reverse_mapping:
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entity = _SINGLETON_MAPPING.reverse_mapping[entity]
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if self._base is not None:
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entity = self._base.deserialize_entity(context, entity)
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return entity
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def serialize_context(self, context):
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if self._base is not None:
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context = self._base.serialize_context(context)
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return context
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def deserialize_context(self, context):
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if self._base is not None:
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context = self._base.deserialize_context(context)
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return context
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