def db_sync(version=None):
if version is not None:
try:
version = int(version)
except ValueError:
raise exception.NovaException(_("version should be an integer"))
current_version = db_version()
repository = _find_migrate_repo()
if version is None or version > current_version:
return versioning_api.upgrade(get_engine(), repository, version)
else:
return versioning_api.downgrade(get_engine(), repository,
version)
def db_version():
repository = _find_migrate_repo()
try:
return versioning_api.db_version(get_engine(), repository)
except versioning_exceptions.DatabaseNotControlledError:
meta = sqlalchemy.MetaData()
engine = get_engine()
meta.reflect(bind=engine)
tables = meta.tables
if len(tables) == 0:
db_version_control(migration.INIT_VERSION)
return versioning_api.db_version(get_engine(), repository)
else:
# Some pre-Essex DB's may not be version controlled.
# Require them to upgrade using Essex first.
raise exception.NovaException(
_("Upgrade DB using Essex release first."))
def unregister_models():
engine = baremetal_session.get_engine()
BASE.metadata.drop_all(engine)
def db_version_control(version=None):
repository = _find_migrate_repo()
versioning_api.version_control(get_engine(), repository, version)
return version
def register_models():
engine = baremetal_session.get_engine()
BASE.metadata.create_all(engine)