client/src/app/+admin/request-schedulers/request-schedulers-stats/request-schedulers-stats.component.ts

   1 import { Component, OnInit, OnDestroy } from '@angular/core'
   2
   3 import { NotificationsService } from 'angular2-notifications'
   4
   5 import { RequestSchedulersService, RequestSchedulerStatsAttributes } from '../shared'
   6 import { RequestSchedulerStats } from '../../../../../../shared'
   7
   8 @Component({
   9   selector: 'my-request-schedulers-stats',
  10   templateUrl: './request-schedulers-stats.component.html',
  11   styleUrls: [ './request-schedulers-stats.component.scss' ]
  12 })
  13 export class RequestSchedulersStatsComponent implements OnInit, OnDestroy {
  14   statsTitles = {
  15     requestScheduler: 'Basic request scheduler',
  16     requestVideoEventScheduler: 'Video events request scheduler',
  17     requestVideoQaduScheduler: 'Quick and dirty video updates request scheduler'
  18   }
  19
  20   stats: RequestSchedulerStats
  21
  22   private intervals: { [ id: string ]: number } = {
  23     requestScheduler: null,
  24     requestVideoEventScheduler: null,
  25     requestVideoQaduScheduler: null
  26   }
  27
  28   private timeouts: { [ id: string ]: number } = {
  29     requestScheduler: null,
  30     requestVideoEventScheduler: null,
  31     requestVideoQaduScheduler: null
  32   }
  33
  34   constructor (
  35     private notificationsService: NotificationsService,
  36     private requestService: RequestSchedulersService
  37   ) { }
  38
  39   ngOnInit () {
  40     this.getStats()
  41     this.runIntervals()
  42   }
  43
  44   ngOnDestroy () {
  45     Object.keys(this.stats).forEach(requestSchedulerName => {
  46       if (this.intervals[requestSchedulerName] !== null) {
  47         window.clearInterval(this.intervals[requestSchedulerName])
  48       }
  49
  50       if (this.timeouts[requestSchedulerName] !== null) {
  51         window.clearTimeout(this.timeouts[requestSchedulerName])
  52       }
  53     })
  54   }
  55
  56   getStats () {
  57     this.requestService.getStats().subscribe(
  58       stats => this.stats = stats,
  59
  60       err => this.notificationsService.error('Error', err)
  61     )
  62   }
  63
  64   private runIntervals () {
  65     Object.keys(this.intervals).forEach(requestSchedulerName => {
  66       this.intervals[requestSchedulerName] = window.setInterval(() => {
  67         const stats: RequestSchedulerStatsAttributes = this.stats[requestSchedulerName]
  68
  69         stats.remainingMilliSeconds -= 1000
  70
  71         if (stats.remainingMilliSeconds <= 0) {
  72           this.timeouts[requestSchedulerName] = window.setTimeout(() => this.getStats(), stats.remainingMilliSeconds + 100)
  73         }
  74       }, 1000)
  75     })
  76   }
  77 }