old_contents: # Copyright (c) 2016 Intel Corporation.
  #
  #    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.objects import common_types
  from oslo_versionedobjects import fields as obj_fields
  
  from neutron.db.models import address_scope as models
  from neutron.db import models_v2
  from neutron.db import rbac_db_models
  from neutron.objects import base
  from neutron.objects import rbac
  from neutron.objects import rbac_db
  from neutron.objects import subnetpool
  
  
  @base.NeutronObjectRegistry.register
  class AddressScopeRBAC(rbac.RBACBaseObject):
      # Version 1.0: Initial version
      VERSION = '1.0'
  
      db_model = rbac_db_models.AddressScopeRBAC
  
  
  @base.NeutronObjectRegistry.register
  class AddressScope(rbac_db.NeutronRbacObject):
      # Version 1.0: Initial version
      # Version 1.1: Add RBAC support
      VERSION = '1.1'
  
      # required by RbacNeutronMetaclass
      rbac_db_cls = AddressScopeRBAC
  
      db_model = models.AddressScope
  
      fields = {
          'id': common_types.UUIDField(),
          'project_id': obj_fields.StringField(nullable=True),
          'name': obj_fields.StringField(),
          'shared': obj_fields.BooleanField(),
          'ip_version': common_types.IPVersionEnumField(),
      }
  
      @classmethod
      def get_network_address_scope(cls, context, network_id, ip_version):
          query = context.session.query(cls.db_model)
          query = query.join(
              models_v2.SubnetPool,
              models_v2.SubnetPool.address_scope_id == cls.db_model.id)
          query = query.filter(
              cls.db_model.ip_version == ip_version,
              models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id,
              models_v2.Subnet.network_id == network_id)
          scope_model_obj = query.one_or_none()
  
          if scope_model_obj:
              return cls._load_object(context, scope_model_obj)
  
          return None
  
      @classmethod
      def get_bound_tenant_ids(cls, context, obj_id):
          snp_objs = subnetpool.SubnetPool.get_objects(
              context, address_scope_id=obj_id
          )
          return {snp.project_id for snp in snp_objs}
  
new_contents: # Copyright (c) 2016 Intel Corporation.
  #
  #    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.objects import common_types
  from oslo_versionedobjects import fields as obj_fields
  
  from neutron.db.models import address_scope as models
  from neutron.db import models_v2
  from neutron.db import rbac_db_models
  from neutron.objects import base
  from neutron.objects import rbac
  from neutron.objects import rbac_db
  from neutron.objects import subnetpool
  
  
  @base.NeutronObjectRegistry.register
  class AddressScopeRBAC(rbac.RBACBaseObject):
      # Version 1.0: Initial version
      VERSION = '1.0'
  
      db_model = rbac_db_models.AddressScopeRBAC
  
  
  @base.NeutronObjectRegistry.register
  class AddressScope(rbac_db.NeutronRbacObject):
      # Version 1.0: Initial version
      # Version 1.1: Add RBAC support
      VERSION = '1.1'
  
      # required by RbacNeutronMetaclass
      rbac_db_cls = AddressScopeRBAC
  
      db_model = models.AddressScope
  
      fields = {
          'id': common_types.UUIDField(),
          'project_id': obj_fields.StringField(nullable=True),
          'name': obj_fields.StringField(),
          'shared': obj_fields.BooleanField(),
          'ip_version': common_types.IPVersionEnumField(),
      }
  
      @classmethod
      def get_network_address_scope(cls, context, network_id, ip_version):
          query = context.session.query(cls.db_model)
          query = query.join(
              models_v2.SubnetPool,
              models_v2.SubnetPool.address_scope_id == cls.db_model.id)
          query = query.filter(
              cls.db_model.ip_version == ip_version,
              models_v2.Subnet.subnetpool_id == models_v2.SubnetPool.id,
              models_v2.Subnet.network_id == network_id)
          scope_model_obj = query.one_or_none()
  
          if scope_model_obj:
              return cls._load_object(context, scope_model_obj)
  
          return None
  
      @classmethod
      def get_bound_tenant_ids(cls, context, obj_id):
          snp_objs = subnetpool.SubnetPool.get_objects(
              context, address_scope_id=obj_id, fields=['project_id'])
          return {snp['project_id'] for snp in snp_objs}
  
subject: Improve AddressScope.get_bound_tenant_ids method