62 lines
2.2 KiB
Python
62 lines
2.2 KiB
Python
# Copyright 2012 Managed I.T.
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#
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# Author: Kiall Mac Innes <kiall@managedit.ie>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_log import log as logging
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from sqlalchemy import MetaData, Table, Column, Boolean
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LOG = logging.getLogger(__name__)
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meta = MetaData()
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def upgrade(migrate_engine):
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meta.bind = migrate_engine
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records_table = Table('records', meta, autoload=True)
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# Create the new inherit_ttl column
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inherit_ttl = Column('inherit_ttl', Boolean(), default=True)
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inherit_ttl.create(records_table)
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# Semi-Populate the new inherit_ttl column. We'll need to do a cross-db
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# join from powerdns.records -> powerdns.domains -> designate.domains, so
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# we can't perform the second half here.
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query = records_table.update().values(inherit_ttl=False)
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query = query.where(records_table.c.ttl is not None)
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query.execute()
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# If there are records without an explicity configured TTL, we'll need
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# a manual post-migration step.
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query = records_table.select()
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query = query.where(records_table.c.ttl is None)
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c = query.count()
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if c > 0:
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pmq = ('UPDATE powerdns.records JOIN powerdns.domains ON powerdns.reco'
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'rds.domain_id = powerdns.domains.id JOIN designate.domains ON '
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'powerdns.domains.designate_id = designate.domains.id SET power'
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'dns.records.ttl = designate.domains.ttl WHERE powerdns.records'
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'.inherit_ttl = 1;')
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LOG.warning('**** A manual post-migration step is required ****')
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LOG.warning('Please issue this query: %s', pmq)
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def downgrade(migrate_engine):
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meta.bind = migrate_engine
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records_table = Table('records', meta, autoload=True)
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records_table.c.inherit_ttl.drop()
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