def upgrade(self): # NOTE(gordc): to minimise memory, only import migration when needed from oslo_db.sqlalchemy import migration path = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'sqlalchemy', 'migrate_repo') engine = self._engine_facade.get_engine() from migrate import exceptions as migrate_exc from migrate.versioning import api from migrate.versioning import repository repo = repository.Repository(path) try: api.db_version(engine, repo) except migrate_exc.DatabaseNotControlledError: models.Base.metadata.create_all(engine) api.version_control(engine, repo, repo.latest) else: migration.db_sync(engine, path)