resource_manager.py 文件源码

def session_add_resources(self, scannable_id, resources):
        """NB this is plural because new resources may be interdependent
        and if so they must be added in a blob so that we can hook up the
        parent relationships"""

        # Must be run in a transaction to avoid leaving invalid things in the DB on failure.
        assert transaction.is_managed()

        with self._instance_lock:
            session = self._sessions[scannable_id]
            self._persist_new_resources(session, resources)
            self._persist_lun_updates(scannable_id)
            self._persist_nid_updates(scannable_id, None, None)
            self._persist_created_hosts(session, scannable_id, resources)