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015_drop_migrations_table.py
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015_drop_migrations_table.py
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# 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 sqlalchemy import Boolean, Column, DateTime, Integer
from sqlalchemy import MetaData, String, Table
from cinder.openstack.common import log as logging
LOG = logging.getLogger(__name__)
TABLE_NAME = 'migrations'
def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
table = Table(TABLE_NAME, meta, autoload=True)
try:
table.drop()
except Exception:
LOG.error(_("migrations table not dropped"))
raise
def downgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
table = Table(
TABLE_NAME, meta,
Column('created_at', DateTime(timezone=False)),
Column('updated_at', DateTime(timezone=False)),
Column('deleted_at', DateTime(timezone=False)),
Column('deleted', Boolean),
Column('id', Integer, primary_key=True, nullable=False),
Column('source_compute', String(length=255)),
Column('dest_compute', String(length=255)),
Column('dest_host', String(length=255)),
Column('old_instance_type_id', Integer),
Column('new_instance_type_id', Integer),
Column('instance_uuid', String(length=255), nullable=True),
Column('status', String(length=255)),
mysql_engine='InnoDB',
mysql_charset='utf8'
)
try:
table.create()
except Exception:
LOG.error(_("Table |%s| not created"), repr(table))
raise