寻找一个node.js调度程序，如果作业仍在运行，它将无法启动

作者: 撩心
发布时间: 2025-02-19 08:43:07 (13天前)
转自：

3 条回复

0#
回复此人
不见你 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”> <P> 你可以使用 <a href="https://www.npmjs.com/package/cron" rel="nofollow noreferrer"> cron的 </A> 包。它允许您手动启动/停止cronjob。这意味着您可以在完成cronjob时调用这些函数。 </p> <pre> <code> const CronJob = require('cron').CronJob; let job; // The function you are running const someFunction = () => { job.stop(); doSomething(() => { // When you are done job.start(); }) }; // Create new cronjob job = new CronJob({ cronTime: '00 00 1 * * *', onTick: someFunction, start: false, timeZone: 'America/Los_Angeles' }); // Auto start your cronjob job.start(); </code> </pre> </DIV>

编辑
1#
回复此人
一生浮华 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”> <P> 您可以自己实现： </p> <pre> <code> // The job has to have a method to inform about completion function myJob(input, callback) { setTimeout(callback, 10 * 60 * 1000); // It will complete in 10 minutes } // Scheduler let jobIsRunning = false; function scheduler() { // Do nothing if job is still running if (jobIsRunning) { return; } // Mark the job as running jobIsRunning = true; myJob('some input', () => { // Mark the job as completed jobIsRunning = false; }); } setInterval(scheduler, 5 * 60 * 1000); // Run scheduler every 5 minutes </code> </pre> </DIV>

编辑

登录后才能参与评论