text: # Copyright 2015 OpenStack Foundation.
  #
  #    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 neutron.api import extensions
  
  
  MTU = 'mtu'
  EXTENDED_ATTRIBUTES_2_0 = {
      'networks': {
          MTU: {'allow_post': False, 'allow_put': False,
                'is_visible': True},
      },
  }
  
  
  class Netmtu(extensions.ExtensionDescriptor):
      """Extension class supporting network MTU."""
  
      @classmethod
      def get_name(cls):
          return "Network MTU"
  
      @classmethod
      def get_alias(cls):
          return "net-mtu"
  
      @classmethod
      def get_description(cls):
          return "Provides MTU attribute for a network resource."
  
      @classmethod
      def get_updated(cls):
          return "2015-03-25T10:00:00-00:00"
  
      def get_extended_resources(self, version):
          if version == "2.0":
              return EXTENDED_ATTRIBUTES_2_0
          else:
              return {}
  