old_contents: #    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 oslo_log import log as logging
  import six
  from six.moves import http_client
  import webob.dec
  import webob.exc
  
  from karbor.api.openstack import wsgi
  from karbor import exception
  from karbor import utils
  from karbor.wsgi import common as base_wsgi
  
  
  LOG = logging.getLogger(__name__)
  
  
  class FaultWrapper(base_wsgi.Middleware):
      """Calls down the middleware stack, making exceptions into faults."""
  
      _status_to_type = {}
  
      @staticmethod
      def status_to_type(status):
          if not FaultWrapper._status_to_type:
              for clazz in utils.walk_class_hierarchy(webob.exc.HTTPError):
                  FaultWrapper._status_to_type[clazz.code] = clazz
          return FaultWrapper._status_to_type.get(
              status, webob.exc.HTTPInternalServerError)()
  
      def _error(self, inner, req):
          LOG.error('Middleware error occurred: %s', inner.message)
          safe = getattr(inner, 'safe', False)
          headers = getattr(inner, 'headers', None)
          status = getattr(inner, 'code', http_client.INTERNAL_SERVER_ERROR)
          if status is None:
              status = http_client.INTERNAL_SERVER_ERROR
  
          msg_dict = dict(url=req.url, status=status)
          LOG.info("%(url)s returned with HTTP %(status)d", msg_dict)
          outer = self.status_to_type(status)
          if headers:
              outer.headers = headers
  
          if safe:
              msg = (inner.msg if isinstance(inner, exception.KarborException)
                     else six.text_type(inner))
              outer.explanation = msg
          return wsgi.Fault(outer)
  
      @webob.dec.wsgify(RequestClass=wsgi.Request)
      def __call__(self, req):
          try:
              return req.get_response(self.application)
          except Exception as ex:
              return self._error(ex, req)
  
new_contents: #    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 oslo_log import log as logging
  import six
  from six.moves import http_client
  import webob.dec
  import webob.exc
  
  from karbor.api.openstack import wsgi
  from karbor import exception
  from karbor import utils
  from karbor.wsgi import common as base_wsgi
  
  
  LOG = logging.getLogger(__name__)
  
  
  class FaultWrapper(base_wsgi.Middleware):
      """Calls down the middleware stack, making exceptions into faults."""
  
      _status_to_type = {}
  
      @staticmethod
      def status_to_type(status):
          if not FaultWrapper._status_to_type:
              for clazz in utils.walk_class_hierarchy(webob.exc.HTTPError):
                  FaultWrapper._status_to_type[clazz.code] = clazz
          return FaultWrapper._status_to_type.get(
              status, webob.exc.HTTPInternalServerError)()
  
      def _error(self, inner, req):
          LOG.error('Middleware error occurred: %(type)s %(error)s',
                    {'type': type(inner),
                     'error': inner})
          safe = getattr(inner, 'safe', False)
          headers = getattr(inner, 'headers', None)
          status = getattr(inner, 'code', http_client.INTERNAL_SERVER_ERROR)
          if status is None:
              status = http_client.INTERNAL_SERVER_ERROR
  
          msg_dict = dict(url=req.url, status=status)
          LOG.info("%(url)s returned with HTTP %(status)d", msg_dict)
          outer = self.status_to_type(status)
          if headers:
              outer.headers = headers
  
          if safe:
              msg = (inner.msg if isinstance(inner, exception.KarborException)
                     else six.text_type(inner))
              outer.explanation = msg
          return wsgi.Fault(outer)
  
      @webob.dec.wsgify(RequestClass=wsgi.Request)
      def __call__(self, req):
          try:
              return req.get_response(self.application)
          except Exception as ex:
              return self._error(ex, req)
  
subject: Fix inner has no attribute 'message'