server/lib/job-queue/job-queue.ts

   1 import * as Bull from 'bull'
   2 import { JobState, JobType } from '../../../shared/models'
   3 import { logger } from '../../helpers/logger'
   4 import { Redis } from '../redis'
   5 import { CONFIG, JOB_ATTEMPTS, JOB_COMPLETED_LIFETIME, JOB_CONCURRENCY, JOB_TTL, REPEAT_JOBS } from '../../initializers'
   6 import { ActivitypubHttpBroadcastPayload, processActivityPubHttpBroadcast } from './handlers/activitypub-http-broadcast'
   7 import { ActivitypubHttpFetcherPayload, processActivityPubHttpFetcher } from './handlers/activitypub-http-fetcher'
   8 import { ActivitypubHttpUnicastPayload, processActivityPubHttpUnicast } from './handlers/activitypub-http-unicast'
   9 import { EmailPayload, processEmail } from './handlers/email'
  10 import { processVideoTranscoding, VideoTranscodingPayload } from './handlers/video-transcoding'
  11 import { ActivitypubFollowPayload, processActivityPubFollow } from './handlers/activitypub-follow'
  12 import { processVideoImport, VideoImportPayload } from './handlers/video-import'
  13 import { processVideosViews } from './handlers/video-views'
  14 import { refreshAPObject, RefreshPayload } from './handlers/activitypub-refresher'
  15 import { processVideoFileImport, VideoFileImportPayload } from './handlers/video-file-import'
  16
  17 type CreateJobArgument =
  18   { type: 'activitypub-http-broadcast', payload: ActivitypubHttpBroadcastPayload } |
  19   { type: 'activitypub-http-unicast', payload: ActivitypubHttpUnicastPayload } |
  20   { type: 'activitypub-http-fetcher', payload: ActivitypubHttpFetcherPayload } |
  21   { type: 'activitypub-follow', payload: ActivitypubFollowPayload } |
  22   { type: 'video-file-import', payload: VideoFileImportPayload } |
  23   { type: 'video-transcoding', payload: VideoTranscodingPayload } |
  24   { type: 'email', payload: EmailPayload } |
  25   { type: 'video-import', payload: VideoImportPayload } |
  26   { type: 'activitypub-refresher', payload: RefreshPayload } |
  27   { type: 'videos-views', payload: {} }
  28
  29 const handlers: { [ id in (JobType | 'video-file') ]: (job: Bull.Job) => Promise<any>} = {
  30   'activitypub-http-broadcast': processActivityPubHttpBroadcast,
  31   'activitypub-http-unicast': processActivityPubHttpUnicast,
  32   'activitypub-http-fetcher': processActivityPubHttpFetcher,
  33   'activitypub-follow': processActivityPubFollow,
  34   'video-file-import': processVideoFileImport,
  35   'video-transcoding': processVideoTranscoding,
  36   'video-file': processVideoTranscoding, // TODO: remove it (changed in 1.3)
  37   'email': processEmail,
  38   'video-import': processVideoImport,
  39   'videos-views': processVideosViews,
  40   'activitypub-refresher': refreshAPObject
  41 }
  42
  43 const jobTypes: JobType[] = [
  44   'activitypub-follow',
  45   'activitypub-http-broadcast',
  46   'activitypub-http-fetcher',
  47   'activitypub-http-unicast',
  48   'email',
  49   'video-transcoding',
  50   'video-file-import',
  51   'video-import',
  52   'videos-views',
  53   'activitypub-refresher'
  54 ]
  55
  56 class JobQueue {
  57
  58   private static instance: JobQueue
  59
  60   private queues: { [ id in JobType ]?: Bull.Queue } = {}
  61   private initialized = false
  62   private jobRedisPrefix: string
  63
  64   private constructor () {}
  65
  66   async init () {
  67     // Already initialized
  68     if (this.initialized === true) return
  69     this.initialized = true
  70
  71     this.jobRedisPrefix = 'bull-' + CONFIG.WEBSERVER.HOST
  72     const queueOptions = {
  73       prefix: this.jobRedisPrefix,
  74       redis: Redis.getRedisClient(),
  75       settings: {
  76         maxStalledCount: 10 // transcoding could be long, so jobs can often be interrupted by restarts
  77       }
  78     }
  79
  80     for (const handlerName of Object.keys(handlers)) {
  81       const queue = new Bull(handlerName, queueOptions)
  82       const handler = handlers[handlerName]
  83
  84       queue.process(JOB_CONCURRENCY[handlerName], handler)
  85            .catch(err => logger.error('Error in job queue processor %s.', handlerName, { err }))
  86
  87       queue.on('failed', (job, err) => {
  88         logger.error('Cannot execute job %d in queue %s.', job.id, handlerName, { payload: job.data, err })
  89       })
  90
  91       queue.on('error', err => {
  92         logger.error('Error in job queue %s.', handlerName, { err })
  93       })
  94
  95       this.queues[handlerName] = queue
  96     }
  97
  98     this.addRepeatableJobs()
  99   }
 100
 101   terminate () {
 102     for (const queueName of Object.keys(this.queues)) {
 103       const queue = this.queues[queueName]
 104       queue.close()
 105     }
 106   }
 107
 108   createJob (obj: CreateJobArgument) {
 109     const queue = this.queues[obj.type]
 110     if (queue === undefined) {
 111       logger.error('Unknown queue %s: cannot create job.', obj.type)
 112       throw Error('Unknown queue, cannot create job')
 113     }
 114
 115     const jobArgs: Bull.JobOptions = {
 116       backoff: { delay: 60 * 1000, type: 'exponential' },
 117       attempts: JOB_ATTEMPTS[obj.type],
 118       timeout: JOB_TTL[obj.type]
 119     }
 120
 121     return queue.add(obj.payload, jobArgs)
 122   }
 123
 124   async listForApi (state: JobState, start: number, count: number, asc?: boolean): Promise<Bull.Job[]> {
 125     let results: Bull.Job[] = []
 126
 127     // TODO: optimize
 128     for (const jobType of jobTypes) {
 129       const queue = this.queues[ jobType ]
 130       if (queue === undefined) {
 131         logger.error('Unknown queue %s to list jobs.', jobType)
 132         continue
 133       }
 134
 135       // FIXME: Bull queue typings does not have getJobs method
 136       const jobs = await (queue as any).getJobs(state, 0, start + count, asc)
 137       results = results.concat(jobs)
 138     }
 139
 140     results.sort((j1: any, j2: any) => {
 141       if (j1.timestamp < j2.timestamp) return -1
 142       else if (j1.timestamp === j2.timestamp) return 0
 143
 144       return 1
 145     })
 146
 147     if (asc === false) results.reverse()
 148
 149     return results.slice(start, start + count)
 150   }
 151
 152   async count (state: JobState): Promise<number> {
 153     let total = 0
 154
 155     for (const type of jobTypes) {
 156       const queue = this.queues[ type ]
 157       if (queue === undefined) {
 158         logger.error('Unknown queue %s to count jobs.', type)
 159         continue
 160       }
 161
 162       const counts = await queue.getJobCounts()
 163
 164       total += counts[ state ]
 165     }
 166
 167     return total
 168   }
 169
 170   async removeOldJobs () {
 171     for (const key of Object.keys(this.queues)) {
 172       const queue = this.queues[key]
 173       await queue.clean(JOB_COMPLETED_LIFETIME, 'completed')
 174     }
 175   }
 176
 177   private addRepeatableJobs () {
 178     this.queues['videos-views'].add({}, {
 179       repeat: REPEAT_JOBS['videos-views']
 180     })
 181   }
 182
 183   static get Instance () {
 184     return this.instance || (this.instance = new this())
 185   }
 186 }
 187
 188 // ---------------------------------------------------------------------------
 189
 190 export {
 191   JobQueue
 192 }