捕获 Node js 应用程序的所有未捕获异常 [英] Catch all uncaughtException for Node js app

问题描述

我有一个问题:如何处理我的节点应用程序的所有未捕获异常(操作/开发人员错误将导致所有服务停止).然后我可以在发现错误时向我发送电子邮件警报.

I have a question: how do I can handle all uncaught Exception (operations/developer error will take all service down) for my node app. Then I can send an email alert to me whenever catch an error.

推荐答案

您可以使用 process 'uncaughtException' 和 'unhandledRejection' 事件.

You can use process 'uncaughtException' and 'unhandledRejection' events.

还要记住在'uncaughtException'之后恢复正常操作是不安全的，因为系统损坏:

Also remember that it is not safe to resume normal operation after 'uncaughtException', because the system becomes corrupted:

'uncaughtException' 的正确用法是执行同步清理分配的资源(例如文件描述符、句柄等)在关闭进程之前.

The correct use of 'uncaughtException' is to perform synchronous cleanup of allocated resources (e.g. file descriptors, handles, etc) before shutting down the process.

示例:

process
  .on('unhandledRejection', (reason, p) => {
    console.error(reason, 'Unhandled Rejection at Promise', p);
  })
  .on('uncaughtException', err => {
    console.error(err, 'Uncaught Exception thrown');
    process.exit(1);
  });

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