9dc5ab7ad0
Removed version parameter from storage.upgrade method since it was never used and partial upgrade is not supported by the code base Removed downgrade call from db_sync since it's never used Implements blueprint convert-to-alembic Change-Id: I2aeabc111e5d3728fdcd0df45bf56f0aa68ed199
107 lines
3.2 KiB
Python
107 lines
3.2 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Author: John Tran <jhtran@att.com>
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# Julien Danjou <julien@danjou.info>
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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 distutils.version as dist_version
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import os
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import alembic
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from alembic import config as alembic_config
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import migrate
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from migrate.versioning import util as migrate_util
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import sqlalchemy
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from ceilometer.openstack.common import log
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INIT_VERSION = 1
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LOG = log.getLogger(__name__)
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@migrate_util.decorator
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def patched_with_engine(f, *a, **kw):
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url = a[0]
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engine = migrate_util.construct_engine(url, **kw)
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try:
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kw['engine'] = engine
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return f(*a, **kw)
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finally:
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if isinstance(engine, migrate_util.Engine) and engine is not url:
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migrate_util.log.debug('Disposing SQLAlchemy engine %s', engine)
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engine.dispose()
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# TODO(jkoelker) When migrate 0.7.3 is released and nova depends
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# on that version or higher, this can be removed
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MIN_PKG_VERSION = dist_version.StrictVersion('0.7.3')
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if (not hasattr(migrate, '__version__')
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or dist_version.StrictVersion(migrate.__version__) < MIN_PKG_VERSION):
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migrate_util.with_engine = patched_with_engine
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# NOTE(jkoelker) Delay importing migrate until we are patched
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from migrate import exceptions as versioning_exceptions
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from migrate.versioning import api as versioning_api
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from migrate.versioning.repository import Repository
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_REPOSITORY = None
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def db_sync(engine):
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db_version(engine) # This is needed to create a version stamp in empty DB
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repository = _find_migrate_repo()
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versioning_api.upgrade(engine, repository)
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alembic.command.upgrade(_alembic_config(), "head")
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def _alembic_config():
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path = os.path.join(os.path.dirname(__file__), 'alembic/alembic.ini')
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config = alembic_config.Config(path)
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return config
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def db_version(engine):
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repository = _find_migrate_repo()
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try:
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return versioning_api.db_version(engine,
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repository)
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except versioning_exceptions.DatabaseNotControlledError:
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meta = sqlalchemy.MetaData()
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meta.reflect(bind=engine)
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tables = meta.tables
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if len(tables) == 0:
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db_version_control(engine, 0)
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return versioning_api.db_version(engine, repository)
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def db_version_control(engine, version=None):
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repository = _find_migrate_repo()
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versioning_api.version_control(engine, repository, version)
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return version
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def _find_migrate_repo():
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"""Get the path for the migrate repository."""
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global _REPOSITORY
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path = os.path.join(os.path.abspath(os.path.dirname(__file__)),
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'migrate_repo')
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assert os.path.exists(path)
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if _REPOSITORY is None:
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_REPOSITORY = Repository(path)
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return _REPOSITORY
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