def get_next_id(self):
        try:
            query = {'_id': 'last_id'}
            update = {'$inc': {'id': 1}}
            fn = self.db.internal.find_and_modify
            row = fn(query, update, upsert=True, new=True)
        except Exception as e:
            raise DatabaseException(e)
        return row['id']
def _format_exception_message(cls, msg, pid):
        return cls._EXCEPTION_LOG_FORMAT.format(
            timestamp=cls._iso_timestamp_for_now(),
            process_title=setproctitle.getproctitle(),
            args=sys.argv,
            pid=pid,
            message=msg,
        )