50 lines
1.4 KiB
Python
50 lines
1.4 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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"""Database setup and migration commands."""
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from stevedore import driver
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import magnum.conf
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CONF = magnum.conf.CONF
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_IMPL = None
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def get_backend():
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global _IMPL
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if not _IMPL:
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_IMPL = driver.DriverManager("magnum.database.migration_backend",
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CONF.database.backend).driver
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return _IMPL
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def upgrade(version=None):
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"""Migrate the database to `version` or the most recent version."""
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return get_backend().upgrade(version)
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def version():
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return get_backend().version()
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def stamp(version):
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return get_backend().stamp(version)
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def revision(message, autogenerate):
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return get_backend().revision(message, autogenerate)
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