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 { JOB_ATTEMPTS, JOB_COMPLETED_LIFETIME, JOB_CONCURRENCY, JOB_TTL, REPEAT_JOBS, WEBSERVER } from '../../initializers/constants'
   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 import { processVideoRedundancy, VideoRedundancyPayload } from '@server/lib/job-queue/handlers/video-redundancy'
  17
  18 type CreateJobArgument =
  19   { type: 'activitypub-http-broadcast', payload: ActivitypubHttpBroadcastPayload } |
  20   { type: 'activitypub-http-unicast', payload: ActivitypubHttpUnicastPayload } |
  21   { type: 'activitypub-http-fetcher', payload: ActivitypubHttpFetcherPayload } |
  22   { type: 'activitypub-follow', payload: ActivitypubFollowPayload } |
  23   { type: 'video-file-import', payload: VideoFileImportPayload } |
  24   { type: 'video-transcoding', payload: VideoTranscodingPayload } |
  25   { type: 'email', payload: EmailPayload } |
  26   { type: 'video-import', payload: VideoImportPayload } |
  27   { type: 'activitypub-refresher', payload: RefreshPayload } |
  28   { type: 'videos-views', payload: {} } |
  29   { type: 'video-redundancy', payload: VideoRedundancyPayload }
  30
  31 const handlers: { [id in JobType]: (job: Bull.Job) => Promise<any> } = {
  32   'activitypub-http-broadcast': processActivityPubHttpBroadcast,
  33   'activitypub-http-unicast': processActivityPubHttpUnicast,
  34   'activitypub-http-fetcher': processActivityPubHttpFetcher,
  35   'activitypub-follow': processActivityPubFollow,
  36   'video-file-import': processVideoFileImport,
  37   'video-transcoding': processVideoTranscoding,
  38   'email': processEmail,
  39   'video-import': processVideoImport,
  40   'videos-views': processVideosViews,
  41   'activitypub-refresher': refreshAPObject,
  42   'video-redundancy': processVideoRedundancy
  43 }
  44
  45 const jobTypes: JobType[] = [
  46   'activitypub-follow',
  47   'activitypub-http-broadcast',
  48   'activitypub-http-fetcher',
  49   'activitypub-http-unicast',
  50   'email',
  51   'video-transcoding',
  52   'video-file-import',
  53   'video-import',
  54   'videos-views',
  55   'activitypub-refresher',
  56   'video-redundancy'
  57 ]
  58
  59 class JobQueue {
  60
  61   private static instance: JobQueue
  62
  63   private queues: { [id in JobType]?: Bull.Queue } = {}
  64   private initialized = false
  65   private jobRedisPrefix: string
  66
  67   private constructor () {
  68   }
  69
  70   init () {
  71     // Already initialized
  72     if (this.initialized === true) return
  73     this.initialized = true
  74
  75     this.jobRedisPrefix = 'bull-' + WEBSERVER.HOST
  76     const queueOptions = {
  77       prefix: this.jobRedisPrefix,
  78       redis: Redis.getRedisClientOptions(),
  79       settings: {
  80         maxStalledCount: 10 // transcoding could be long, so jobs can often be interrupted by restarts
  81       }
  82     }
  83
  84     for (const handlerName of Object.keys(handlers)) {
  85       const queue = new Bull(handlerName, queueOptions)
  86       const handler = handlers[handlerName]
  87
  88       queue.process(JOB_CONCURRENCY[handlerName], handler)
  89            .catch(err => logger.error('Error in job queue processor %s.', handlerName, { err }))
  90
  91       queue.on('failed', (job, err) => {
  92         logger.error('Cannot execute job %d in queue %s.', job.id, handlerName, { payload: job.data, err })
  93       })
  94
  95       queue.on('error', err => {
  96         logger.error('Error in job queue %s.', handlerName, { err })
  97       })
  98
  99       this.queues[handlerName] = queue
 100     }
 101
 102     this.addRepeatableJobs()
 103   }
 104
 105   terminate () {
 106     for (const queueName of Object.keys(this.queues)) {
 107       const queue = this.queues[queueName]
 108       queue.close()
 109     }
 110   }
 111
 112   createJob (obj: CreateJobArgument): void {
 113     this.createJobWithPromise(obj)
 114          .catch(err => logger.error('Cannot create job.', { err, obj }))
 115   }
 116
 117   createJobWithPromise (obj: CreateJobArgument) {
 118     const queue = this.queues[obj.type]
 119     if (queue === undefined) {
 120       logger.error('Unknown queue %s: cannot create job.', obj.type)
 121       return
 122     }
 123
 124     const jobArgs: Bull.JobOptions = {
 125       backoff: { delay: 60 * 1000, type: 'exponential' },
 126       attempts: JOB_ATTEMPTS[obj.type],
 127       timeout: JOB_TTL[obj.type]
 128     }
 129
 130     return queue.add(obj.payload, jobArgs)
 131   }
 132
 133   async listForApi (options: {
 134     state: JobState
 135     start: number
 136     count: number
 137     asc?: boolean
 138     jobType: JobType
 139   }): Promise<Bull.Job[]> {
 140     const { state, start, count, asc, jobType } = options
 141     let results: Bull.Job[] = []
 142
 143     const filteredJobTypes = this.filterJobTypes(jobType)
 144
 145     for (const jobType of filteredJobTypes) {
 146       const queue = this.queues[jobType]
 147       if (queue === undefined) {
 148         logger.error('Unknown queue %s to list jobs.', jobType)
 149         continue
 150       }
 151
 152       const jobs = await queue.getJobs([ state ], 0, start + count, asc)
 153       results = results.concat(jobs)
 154     }
 155
 156     results.sort((j1: any, j2: any) => {
 157       if (j1.timestamp < j2.timestamp) return -1
 158       else if (j1.timestamp === j2.timestamp) return 0
 159
 160       return 1
 161     })
 162
 163     if (asc === false) results.reverse()
 164
 165     return results.slice(start, start + count)
 166   }
 167
 168   async count (state: JobState, jobType?: JobType): Promise<number> {
 169     let total = 0
 170
 171     const filteredJobTypes = this.filterJobTypes(jobType)
 172
 173     for (const type of filteredJobTypes) {
 174       const queue = this.queues[type]
 175       if (queue === undefined) {
 176         logger.error('Unknown queue %s to count jobs.', type)
 177         continue
 178       }
 179
 180       const counts = await queue.getJobCounts()
 181
 182       total += counts[state]
 183     }
 184
 185     return total
 186   }
 187
 188   async removeOldJobs () {
 189     for (const key of Object.keys(this.queues)) {
 190       const queue = this.queues[key]
 191       await queue.clean(JOB_COMPLETED_LIFETIME, 'completed')
 192     }
 193   }
 194
 195   private addRepeatableJobs () {
 196     this.queues['videos-views'].add({}, {
 197       repeat: REPEAT_JOBS['videos-views']
 198     }).catch(err => logger.error('Cannot add repeatable job.', { err }))
 199   }
 200
 201   private filterJobTypes (jobType?: JobType) {
 202     if (!jobType) return jobTypes
 203
 204     return jobTypes.filter(t => t === jobType)
 205   }
 206
 207   static get Instance () {
 208     return this.instance || (this.instance = new this())
 209   }
 210 }
 211
 212 // ---------------------------------------------------------------------------
 213
 214 export {
 215   jobTypes,
 216   JobQueue
 217 }