text: # Copyright (c) 2017 OVH SAS
  # 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.
  
  from neutron_lib.api.definitions import qos as qos_apidef
  from neutron_lib.api import extensions as api_extensions
  from neutron_lib import constants as common_constants
  
  
  # The name of the extension.
  NAME = "Direction for QoS bandwidth limit rule"
  
  # The alias of the extension.
  ALIAS = "qos-bw-limit-direction"
  
  # The description of the extension.
  DESCRIPTION = ("Allow to configure QoS bandwidth limit rule with specific "
                 "direction: ingress or egress")
  
  # The list of required extensions.
  REQUIRED_EXTENSIONS = [qos_apidef.ALIAS]
  
  # The list of optional extensions.
  OPTIONAL_EXTENSIONS = None
  
  # The resource attribute map for the extension.
  SUB_RESOURCE_ATTRIBUTE_MAP = {
      qos_apidef.BANDWIDTH_LIMIT_RULES: {
          'parameters': {
              'direction': {
                  'allow_post': True,
                  'allow_put': True,
                  'is_visible': True,
                  'default': common_constants.EGRESS_DIRECTION,
                  'validate': {
                      'type:values': common_constants.VALID_DIRECTIONS}}}
      }
  }
  
  
  class Qos_bw_limit_direction(api_extensions.ExtensionDescriptor):
  
      @classmethod
      def get_name(cls):
          return NAME
  
      @classmethod
      def get_alias(cls):
          return ALIAS
  
      @classmethod
      def get_description(cls):
          return DESCRIPTION
  
      @classmethod
      def get_updated(cls):
          return "2017-04-10T10:00:00-00:00"
  
      def get_required_extensions(self):
          return REQUIRED_EXTENSIONS or []
  
      def get_optional_extensions(self):
          return OPTIONAL_EXTENSIONS or []
  
      def get_extended_resources(self, version):
          if version == "2.0":
              return SUB_RESOURCE_ATTRIBUTE_MAP
          else:
              return {}
  