Files
group-based-policy/gbpservice/neutron/db/gbp_quota_db.py
Sumit Naiksatam a2850d8c58 Adds quota support for GBP resources
GBP quota enforcement tracks both, explicitly
created and implicitly created GBP resources.

Enforcement is done in two places:

1. At the API layer using the standard mechanism,

2. At the DB layer for implicitly created resources.

By default all GBP quota limits are set to -1, i.e.,
the quota is unlimited.

Change-Id: I44eda4cf0c70feebd3453e56bf6af45eef6340bd
Closes-bug: 1462066
2015-08-12 23:45:40 -07:00

43 lines
1.6 KiB
Python

# 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.common import exceptions as nexcp
from neutron import context
from neutron.db import common_db_mixin
from neutron.db import quota_db
from neutron import quota
QUOTA_DRIVER = quota_db.DbQuotaDriver
DB_CLASS_TO_RESOURCE_NAMES = {}
class GBPQuotaBase(common_db_mixin.CommonDbMixin):
def __init__(self, *args, **kwargs):
super(GBPQuotaBase, self).__init__(*args, **kwargs)
tenant_id = kwargs['tenant_id']
ctx = context.Context(user_id=None, tenant_id=tenant_id)
class_name = self.__class__.__name__
resource = DB_CLASS_TO_RESOURCE_NAMES[class_name]
d = {resource: quota.CountableResource(resource, None,
"quota_" + resource)}
resource_quota = QUOTA_DRIVER.get_tenant_quotas(ctx, d,
tenant_id)[resource]
if resource_quota == -1:
return
count = self._get_collection_count(ctx, self.__class__)
if count >= resource_quota:
raise nexcp.OverQuota(overs=[resource])