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