cinder/cinder/db/sqlalchemy/migrate_repo/versions/021_add_default_quota_class.py

67 lines
2.3 KiB
Python

# Copyright 2013 IBM Corp.
#
# 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.
import datetime
from oslo_config import cfg
from sqlalchemy import MetaData, Table
# Get default values via config. The defaults will either
# come from the default values set in the quota option
# configuration or via cinder.conf if the user has configured
# default values for quotas there.
CONF = cfg.CONF
CONF.import_opt('quota_volumes', 'cinder.quota')
CONF.import_opt('quota_snapshots', 'cinder.quota')
CONF.import_opt('quota_gigabytes', 'cinder.quota')
CLASS_NAME = 'default'
CREATED_AT = datetime.datetime.now() # noqa
def upgrade(migrate_engine):
"""Add default quota class data into DB."""
meta = MetaData()
meta.bind = migrate_engine
quota_classes = Table('quota_classes', meta, autoload=True)
rows = quota_classes.count().\
where(quota_classes.c.class_name == 'default').execute().scalar()
# Do not add entries if there are already 'default' entries. We don't
# want to write over something the user added.
if rows:
return
# Set default volumes
qci = quota_classes.insert()
qci.execute({'created_at': CREATED_AT,
'class_name': CLASS_NAME,
'resource': 'volumes',
'hard_limit': CONF.quota_volumes,
'deleted': False, })
# Set default snapshots
qci.execute({'created_at': CREATED_AT,
'class_name': CLASS_NAME,
'resource': 'snapshots',
'hard_limit': CONF.quota_snapshots,
'deleted': False, })
# Set default gigabytes
qci.execute({'created_at': CREATED_AT,
'class_name': CLASS_NAME,
'resource': 'gigabytes',
'hard_limit': CONF.quota_gigabytes,
'deleted': False, })