old_contents: # vim: tabstop=4 shiftwidth=4 softtabstop=4
  #
  # Copyright 2013 VMware, Inc
  #
  #    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.
  #
  # @author: linb, VMware
  
  from neutron.common import exceptions
  
  
  class VcnsException(exceptions.NeutronException):
      pass
  
  
  class VcnsGeneralException(VcnsException):
      def __init__(self, message):
          self.message = message
          super(VcnsGeneralException, self).__init__()
  
  
  class VcnsBadRequest(exceptions.BadRequest):
      pass
  
  
  class VcnsNotFound(exceptions.NotFound):
      message = _('%(resource)s not found: %(msg)s')
  
  
  class VcnsApiException(VcnsException):
      message = _("An unknown exception %(status)s occurred: %(response)s.")
  
      def __init__(self, **kwargs):
          super(VcnsApiException, self).__init__(**kwargs)
  
          self.status = kwargs.get('status')
          self.header = kwargs.get('header')
          self.response = kwargs.get('response')
  
  
  class ResourceRedirect(VcnsApiException):
      message = _("Resource %(uri)s has been redirected")
  
  
  class RequestBad(VcnsApiException):
      message = _("Request %(uri)s is Bad, response %(response)s")
  
  
  class Forbidden(VcnsApiException):
      message = _("Forbidden: %(uri)s")
  
  
  class ResourceNotFound(VcnsApiException):
      message = _("Resource %(uri)s not found")
  
  
  class MediaTypeUnsupport(VcnsApiException):
      message = _("Media Type %(uri)s is not supported")
  
  
  class ServiceUnavailable(VcnsApiException):
      message = _("Service on available: %(uri)s")
  
new_contents: # vim: tabstop=4 shiftwidth=4 softtabstop=4
  #
  # Copyright 2013 VMware, Inc
  #
  #    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.
  #
  # @author: linb, VMware
  
  from neutron.common import exceptions
  
  
  class VcnsException(exceptions.NeutronException):
      pass
  
  
  class VcnsGeneralException(VcnsException):
      def __init__(self, message):
          self.message = message
          super(VcnsGeneralException, self).__init__()
  
  
  class VcnsBadRequest(exceptions.BadRequest):
      pass
  
  
  class VcnsNotFound(exceptions.NotFound):
      message = _('%(resource)s not found: %(msg)s')
  
  
  class VcnsApiException(VcnsException):
      message = _("An unknown exception %(status)s occurred: %(response)s.")
  
      def __init__(self, **kwargs):
          super(VcnsApiException, self).__init__(**kwargs)
  
          self.status = kwargs.get('status')
          self.header = kwargs.get('header')
          self.response = kwargs.get('response')
  
  
  class ResourceRedirect(VcnsApiException):
      message = _("Resource %(uri)s has been redirected")
  
  
  class RequestBad(VcnsApiException):
      message = _("Request %(uri)s is Bad, response %(response)s")
  
  
  class Forbidden(VcnsApiException):
      message = _("Forbidden: %(uri)s")
  
  
  class ResourceNotFound(VcnsApiException):
      message = _("Resource %(uri)s not found")
  
  
  class MediaTypeUnsupport(VcnsApiException):
      message = _("Media Type %(uri)s is not supported")
  
  
  class ServiceUnavailable(VcnsApiException):
      message = _("Service Unavailable: %(uri)s")
  
subject: Correct the exception message