Timer Exector

Purpose

Exec all events when hit the maxQueueSize or maxTimeWait .

You can extends class TimeExector and implement exec(events: any[]){} method .

Usage

Install

> npm i timer-exector -S

Import Class

TypeScript

import TimeExector from 'time-exector'

JavaScript

const TimeExector = require('time-exector').default

Extends class

class DemoTimeExector extends TimeExector {
  async exec(events: any[]): Promise<boolean> {
    events.forEach(event => {
      console.log(event)
    })
    return true
  }
}

Create exector instance

const exector = new DemoTimeExector({
  maxQueueSize: 3,
  maxTimeWait: 3 * 1000,
})

Start the exector before your application start

exector.start()

Exit the exector and wait for every events has been executed .

await exector.exit()

Options

maxQueueSize :

If the queue's length >= maxQueueSize , exec all events immediately and empty the queue . It will be disable when set as -1 . Default value is 32 .

maxTimeWait :

If there is no exec for maxTimeWait ms , exec all events immediately . It will be disable when set as -1 . Default value is 10000 .

Example

const bluebird = require('bluebird')
const TimeExector = require('time-exector').default

class DemoTimeExector extends TimeExector {
  async exec(events) {
    events.forEach(event => {
      console.log(event)
    })
    return true
  }
}

const events = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
const exector = new DemoTimeExector({
  maxQueueSize: 3,
  maxTimeWait: 3 * 1000,
})
console.log('start')
exector.start()
const main = async () => {
  for (const event of events) {
    exector.enqueue(event)
    await bluebird.delay(700)
  }
  await exector.exit()
  process.exit(0)
}
main()

// output:
// start
// 0
// 1
// 2
// 3
// 4
// 5
// 6
// 7
// 8
// 9
// 10