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