old_contents: # Copyright 2011 OpenStack LLC.
  # All Rights Reserved.
  #
  #    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.
  
  # Only (de)serialization utils hasn't been removed to decrease requirements
  # number.
  
  """Utility methods for working with WSGI servers."""
  
  import datetime
  
  from oslo_config import cfg
  from oslo_serialization import jsonutils
  import six
  
  from sahara import exceptions
  from sahara.i18n import _
  
  CONF = cfg.CONF
  
  
  class ActionDispatcher(object):
      """Maps method name to local methods through action name."""
  
      def dispatch(self, *args, **kwargs):
          """Find and call local method."""
          action = kwargs.pop('action', 'default')
          action_method = getattr(self, str(action), self.default)
          return action_method(*args, **kwargs)
  
      def default(self, data):
          raise NotImplementedError()
  
  
  class DictSerializer(ActionDispatcher):
      """Default request body serialization."""
  
      def serialize(self, data, action='default'):
          return self.dispatch(data, action=action)
  
      def default(self, data):
          return ""
  
  
  class JSONDictSerializer(DictSerializer):
      """Default JSON request body serialization."""
  
      def default(self, data):
          def sanitizer(obj):
              if isinstance(obj, datetime.datetime):
                  _dtime = obj - datetime.timedelta(microseconds=obj.microsecond)
                  return _dtime.isoformat()
              return six.text_type(obj)
          return jsonutils.dumps(data, default=sanitizer)
  
  
  class TextDeserializer(ActionDispatcher):
      """Default request body deserialization."""
  
      def deserialize(self, datastring, action='default'):
          return self.dispatch(datastring, action=action)
  
      def default(self, datastring):
          return {}
  
  
  class JSONDeserializer(TextDeserializer):
  
      def _from_json(self, datastring):
          try:
              return jsonutils.loads(datastring)
          except ValueError:
              msg = _("cannot understand JSON")
              raise exceptions.MalformedRequestBody(msg)
  
      def default(self, datastring):
          return {'body': self._from_json(datastring)}
  
new_contents: # Copyright 2011 OpenStack LLC.
  # All Rights Reserved.
  #
  #    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.
  
  # Only (de)serialization utils hasn't been removed to decrease requirements
  # number.
  
  """Utility methods for working with WSGI servers."""
  
  import datetime
  
  from oslo_serialization import jsonutils
  import six
  
  from sahara import exceptions
  from sahara.i18n import _
  
  
  class ActionDispatcher(object):
      """Maps method name to local methods through action name."""
  
      def dispatch(self, *args, **kwargs):
          """Find and call local method."""
          action = kwargs.pop('action', 'default')
          action_method = getattr(self, str(action), self.default)
          return action_method(*args, **kwargs)
  
      def default(self, data):
          raise NotImplementedError()
  
  
  class DictSerializer(ActionDispatcher):
      """Default request body serialization."""
  
      def serialize(self, data, action='default'):
          return self.dispatch(data, action=action)
  
      def default(self, data):
          return ""
  
  
  class JSONDictSerializer(DictSerializer):
      """Default JSON request body serialization."""
  
      def default(self, data):
          def sanitizer(obj):
              if isinstance(obj, datetime.datetime):
                  _dtime = obj - datetime.timedelta(microseconds=obj.microsecond)
                  return _dtime.isoformat()
              return six.text_type(obj)
          return jsonutils.dumps(data, default=sanitizer)
  
  
  class TextDeserializer(ActionDispatcher):
      """Default request body deserialization."""
  
      def deserialize(self, datastring, action='default'):
          return self.dispatch(datastring, action=action)
  
      def default(self, datastring):
          return {}
  
  
  class JSONDeserializer(TextDeserializer):
  
      def _from_json(self, datastring):
          try:
              return jsonutils.loads(datastring)
          except ValueError:
              msg = _("cannot understand JSON")
              raise exceptions.MalformedRequestBody(msg)
  
      def default(self, datastring):
          return {'body': self._from_json(datastring)}
  
subject: Remove unused config.CONF