71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014-2016 OpenMarket Ltd
|
|
#
|
|
# 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 frozendict import frozendict
|
|
from canonicaljson import json
|
|
|
|
from six import string_types
|
|
|
|
|
|
def freeze(o):
|
|
if isinstance(o, dict):
|
|
return frozendict({k: freeze(v) for k, v in o.items()})
|
|
|
|
if isinstance(o, frozendict):
|
|
return o
|
|
|
|
if isinstance(o, string_types):
|
|
return o
|
|
|
|
try:
|
|
return tuple([freeze(i) for i in o])
|
|
except TypeError:
|
|
pass
|
|
|
|
return o
|
|
|
|
|
|
def unfreeze(o):
|
|
if isinstance(o, (dict, frozendict)):
|
|
return dict({k: unfreeze(v) for k, v in o.items()})
|
|
|
|
if isinstance(o, string_types):
|
|
return o
|
|
|
|
try:
|
|
return [unfreeze(i) for i in o]
|
|
except TypeError:
|
|
pass
|
|
|
|
return o
|
|
|
|
|
|
def _handle_frozendict(obj):
|
|
"""Helper for EventEncoder. Makes frozendicts serializable by returning
|
|
the underlying dict
|
|
"""
|
|
if type(obj) is frozendict:
|
|
# fishing the protected dict out of the object is a bit nasty,
|
|
# but we don't really want the overhead of copying the dict.
|
|
return obj._dict
|
|
raise TypeError('Object of type %s is not JSON serializable' %
|
|
obj.__class__.__name__)
|
|
|
|
|
|
# A JSONEncoder which is capable of encoding frozendics without barfing
|
|
frozendict_json_encoder = json.JSONEncoder(
|
|
default=_handle_frozendict,
|
|
)
|