public function onWorkerStop(SwooleServer $server, $worker_id)
    {
        //不能在这里处理 coroutine ，所以不能使用 Yii::$app
        $contexts = Yii::$context->getContextData();
        foreach ($contexts as $context){
            /** @var Application $application */
            $application = $context[Context::COROUTINE_APP] ?? null;
            if(empty($application)){
                continue;
            }
            $targets = $application->getLog()->targets;
            foreach ($targets as $target) {
                $target->export();
            }
        }

    }