84 lines
2.4 KiB
Python
84 lines
2.4 KiB
Python
# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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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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import os
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from oslo_db.sqlalchemy.migration_cli import manager
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import magnum.conf
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CONF = magnum.conf.CONF
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_MANAGER = None
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def get_manager():
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global _MANAGER
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if not _MANAGER:
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alembic_path = os.path.abspath(
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os.path.join(os.path.dirname(__file__), 'alembic.ini'))
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migrate_path = os.path.abspath(
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os.path.join(os.path.dirname(__file__), 'alembic'))
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migration_config = {'alembic_ini_path': alembic_path,
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'alembic_repo_path': migrate_path,
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'db_url': CONF.database.connection}
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_MANAGER = manager.MigrationManager(migration_config)
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return _MANAGER
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def version():
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"""Current database version.
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:returns: Database version
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:rtype: string
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"""
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return get_manager().version()
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def upgrade(version):
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"""Used for upgrading database.
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:param version: Desired database version
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:type version: string
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"""
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version = version or 'head'
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get_manager().upgrade(version)
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def stamp(revision):
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"""Stamps database with provided revision.
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Don't run any migrations.
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:param revision: Should match one from repository or head - to stamp
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database with most recent revision
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:type revision: string
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"""
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get_manager().stamp(revision)
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def revision(message=None, autogenerate=False):
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"""Creates template for migration.
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:param message: Text that will be used for migration title
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:type message: string
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:param autogenerate: If True - generates diff based on current database
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state
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:type autogenerate: bool
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"""
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return get_manager().revision(message=message, autogenerate=autogenerate)
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