VueCrontab

Periodic processing management system (crontab) running on Vue.js

Introduction

VueCrontab is a plug-in for Vue.js that executes functions according to a specified schedule. The schedule consists of hours, minutes, seconds, days of the week, etc. VueCrontab executes the specified function when it matches the date and time. By using this you can easily implement periodic processing to run in the background.

Install

$ npm install vue-crontab

Examples

• Simple vue component
• Multi jobs
• Use with the Vuex
• Additional condition of the function.
• Async of the functions

Usage

Counter updated every second.

import Vue from 'vue'
import VueCrontab from 'vue-crontab'

Vue.use(VueCrontab)

new Vue({
  el: '#app',
  render: h => h(App)
})

<template>
  <div id="app">
    <div>
      <div class="counter">{{ counter }}</div>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      counter: 0
    }
  },
  created () {
    let result = this.$crontab.addJob({
      name: 'counter',
      interval: {
        seconds: '/1',
      },
      job: this.countUp
    })
  },
  methods: {
    countUp () {
      this.counter += 1
    }
  }
}
</script>

Reference

VueCrontab

option

name	type	description	default
interval	number	The interval to check the interval of the managed job.(milliseconds)	1000
auto_start	Boolean	Setting whether to automatically move cron when one or more jobs are reached.	true

examples

call setOption before Vue.use() method.

VueCrontab.setOption({
  interval: 100,
  auto_start: false
})

Vue.use(VueCrontab)

methods

name	argument	description
addJob	Array or Object
enableJob	string	Enable job with specified name.
disableJob	string	Disable job with specified name.
deleteJob	string	Delete job with specified name.
execJob	string	Manually execute the job with the specified name.
startCrontab	-	Stop the periodic processing of VueCrontab.
stopCrontab	-	Start the periodic processing of VueCrontab.
setOption	Object	change option of VueCrontab.
getOption	-	get option of VueCrontab.

Job

option

name	type	description
name (required)	String	job name.
interval (required)	Array or String or Object	Specify the periodical execution interval of the job.
job (required)	Array or Function	Specify the function you want to execute when matching the interval.
sync	number	Whether to synchronize and execute when multiple jobs are registered. 1 = sync, 0 = not sync(default)
condition	Array or Function	Add a function when you want to additionally specify job execution conditions in addition to interval. The condition must return Boolean type.

interval

parameters

name	range	default
milliseconds	0 - 9	*
seconds	0 - 59	*
minutes	0 - 59	*
hours	0 - 23	*
day	1 - 31	*
month	1 - 12	*
year	0 -	*
week	0 - 6 (// Sunday is 0, Monday is 1, and so on.)	*

Available symbols

name	description	examples
*	All ranges	*
/	Number divided by 0	/2 = every 2 seconds. /5 = every 5 seconds.
-	Within the specified numerical range	0-10 = between 0 and 10 seconds.
,	Used to connect conditions	0,1,2 ... 0,10-20,/7 ...

interval examples

execute every 0.1 seconds

{milliseconds: '/1'}

If you want to process with milliseconds, change setOption as well.

VueCrontab.setOption({
  interval: 100
})

execute every minute.

{minutes: '/1'}

execute 0 minutes from 0 to 9 o'clock on the 1st of every month.

{seconds: '0', minutes:'0', hours: '0-9', day: '1'}

1,3,5,10-15 o'clock Monday

{week: '0', seconds: '0', minutes:'0', hours: '1,3,5,10-15'}

job arguments

name	type	description
exec_date	Date	Match date and time.
last_run	Date	Last execution date and time.
counter	number	Number of executions.
last_result	any	Return value of the previous function.
type	String	'cron' = executed by periodic processing. 'manual = manually execution.

  methods: {
    countUp ({exec_date, last_run, counter, last_result, type}) {
      return "as the next last_result.";
    }
  }

License

MIT