44 lines
1.6 KiB
Python
44 lines
1.6 KiB
Python
# Copyright 2014 OpenStack Foundation
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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 migrate.changeset import UniqueConstraint
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from oslo_log import log as logging
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from sqlalchemy.exc import InternalError
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from sqlalchemy.exc import OperationalError
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from sqlalchemy.schema import MetaData
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from trove.db.sqlalchemy.migrate_repo.schema import Table
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logger = logging.getLogger('trove.db.sqlalchemy.migrate_repo.schema')
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def upgrade(migrate_engine):
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meta = MetaData()
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meta.bind = migrate_engine
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datastore_versions = Table('datastore_versions', meta, autoload=True)
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# drop the unique index on the name column - unless we are
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# using sqlite - it doesn't support dropping unique constraints
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uc = None
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if migrate_engine.name == "mysql":
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uc = UniqueConstraint('name', table=datastore_versions, name='name')
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elif migrate_engine.name == "postgresql":
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uc = UniqueConstraint('name', table=datastore_versions,
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name='datastore_versions_name_key')
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if uc:
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try:
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uc.drop()
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except (OperationalError, InternalError) as e:
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logger.info(e)
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