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# Copyright 2013 Hewlett-Packard Development Company, L.P.
#
# Author: Kiall Mac Innes <kiall@hpe.com>
#
# 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 oslo_config import cfg
from oslo_log import log as logging
from designate import exceptions
from designate import storage
from designate import objects
from designate.quota import base
from designate.storage import transaction
LOG = logging.getLogger(__name__)
class StorageQuota(base.Quota):
__plugin_name__ = 'storage'
def __init__(self):
super(StorageQuota, self).__init__()
# TODO(kiall): Should this be tied to central's config?
storage_driver = cfg.CONF['service:central'].storage_driver
self.storage = storage.get_storage(storage_driver)
def _get_quotas(self, context, tenant_id):
quotas = self.storage.find_quotas(context, {
'tenant_id': tenant_id,
})
return dict((q['resource'], q['hard_limit']) for q in quotas)
def get_quota(self, context, tenant_id, resource):
context = context.deepcopy()
context.all_tenants = True
quota = self.storage.find_quota(context, {
'tenant_id': tenant_id,
'resource': resource,
})
return {resource: quota['hard_limit']}
@transaction
def set_quota(self, context, tenant_id, resource, hard_limit):
context = context.deepcopy()
context.all_tenants = True
def create_quota():
quota = objects.Quota(
tenant_id=tenant_id, resource=resource, hard_limit=hard_limit)
self.storage.create_quota(context, quota)
def update_quota(quota):
quota.hard_limit = hard_limit
self.storage.update_quota(context, quota)
if resource not in list(self.get_default_quotas(context).keys()):
raise exceptions.QuotaResourceUnknown("%s is not a valid quota "
"resource" % resource)
try:
create_quota()
except exceptions.Duplicate:
quota = self.storage.find_quota(context, {
'tenant_id': tenant_id,
'resource': resource,
})
update_quota(quota)
return {resource: hard_limit}
@transaction
def reset_quotas(self, context, tenant_id):
context = context.deepcopy()
context.all_tenants = True
quotas = self.storage.find_quotas(context, {
'tenant_id': tenant_id,
})
for quota in quotas:
self.storage.delete_quota(context, quota['id'])
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