/usr/lib/python2.7/dist-packages/oslo_reports/views/json/generic.py is in python-oslo.reports 1.7.0-2.
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#
# 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.
"""Provides generic JSON views
This modules defines several basic views for serializing
data to JSON. Submodels that have already been serialized
as JSON may have their string values marked with `__is_json__
= True` using :class:`oslo_reports._utils.StringWithAttrs`
(each of the classes within this module does this automatically,
and non-naive serializers check for this attribute and handle
such strings specially)
"""
import copy
from oslo_serialization import jsonutils as json
from oslo_reports import _utils as utils
class BasicKeyValueView(object):
"""A Basic Key-Value JSON View
This view performs a naive serialization of a model
into JSON by simply calling :func:`json.dumps` on the model
"""
def __call__(self, model):
res = utils.StringWithAttrs(json.dumps(model.data, sort_keys=True))
res.__is_json__ = True
return res
class KeyValueView(object):
"""A Key-Value JSON View
This view performs advanced serialization to a model
into JSON. It does so by first checking all values to
see if they are marked as JSON. If so, they are deserialized
using :func:`json.loads`. Then, the copy of the model with all
JSON deserialized is reserialized into proper nested JSON using
:func:`json.dumps`.
"""
def __call__(self, model):
# this part deals with subviews that were already serialized
cpy = copy.deepcopy(model)
for key in model.keys():
if getattr(model[key], '__is_json__', False):
cpy[key] = json.loads(model[key])
res = utils.StringWithAttrs(json.dumps(cpy.data, sort_keys=True))
res.__is_json__ = True
return res
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