91 lines
2.6 KiB
Python
91 lines
2.6 KiB
Python
# Copyright 2011 OpenStack LLC.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# Only (de)serialization utils hasn't been removed to decrease requirements
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# number.
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"""Utility methods for working with WSGI servers."""
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import datetime
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from xml.dom import minidom
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from xml.parsers import expat
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from distil import exceptions
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from distil.i18n import _
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from oslo_serialization import jsonutils
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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class ActionDispatcher(object):
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"""Maps method name to local methods through action name."""
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def dispatch(self, *args, **kwargs):
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"""Find and call local method."""
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action = kwargs.pop('action', 'default')
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action_method = getattr(self, str(action), self.default)
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return action_method(*args, **kwargs)
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def default(self, data):
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raise NotImplementedError()
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class DictSerializer(ActionDispatcher):
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"""Default request body serialization"""
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def serialize(self, data, action='default'):
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return self.dispatch(data, action=action)
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def default(self, data):
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return ""
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class JSONDictSerializer(DictSerializer):
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"""Default JSON request body serialization"""
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def default(self, data):
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def sanitizer(obj):
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if isinstance(obj, datetime.datetime):
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_dtime = obj - datetime.timedelta(microseconds=obj.microsecond)
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return _dtime.isoformat()
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return unicode(obj)
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return jsonutils.dumps(data, default=sanitizer)
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class TextDeserializer(ActionDispatcher):
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"""Default request body deserialization"""
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def deserialize(self, datastring, action='default'):
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return self.dispatch(datastring, action=action)
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def default(self, datastring):
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return {}
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class JSONDeserializer(TextDeserializer):
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def _from_json(self, datastring):
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try:
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return jsonutils.loads(datastring)
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except ValueError:
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msg = _("cannot understand JSON")
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raise exception.MalformedRequestBody(reason=msg)
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def default(self, datastring):
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return {'body': self._from_json(datastring)}
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