text: # 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.
  
  import abc
  
  import six
  
  from tacker.api import extensions
  
  
  @six.add_metaclass(abc.ABCMeta)
  class VnfScaleAbstractDriver(extensions.PluginInterface):
  
      @abc.abstractmethod
      def scale(self,
                context,
                plugin,
                auth_attr,
                policy,
                region_name):
          pass
  
      @abc.abstractmethod
      def scale_wait(self,
                     context,
                     plugin,
                     auth_attr,
                     policy,
                     region_name):
          pass
  