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_REQUEST_TTL } 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
  14 type CreateJobArgument =
  15   { type: 'activitypub-http-broadcast', payload: ActivitypubHttpBroadcastPayload } |
  16   { type: 'activitypub-http-unicast', payload: ActivitypubHttpUnicastPayload } |
  17   { type: 'activitypub-http-fetcher', payload: ActivitypubHttpFetcherPayload } |
  18   { type: 'activitypub-follow', payload: ActivitypubFollowPayload } |
  19   { type: 'video-file-import', payload: VideoFileImportPayload } |
  20   { type: 'video-file', payload: VideoFilePayload } |
  21   { type: 'email', payload: EmailPayload } |
  22   { type: 'video-import', payload: VideoImportPayload }
  23
  24 const handlers: { [ id in JobType ]: (job: Bull.Job) => Promise<any>} = {
  25   'activitypub-http-broadcast': processActivityPubHttpBroadcast,
  26   'activitypub-http-unicast': processActivityPubHttpUnicast,
  27   'activitypub-http-fetcher': processActivityPubHttpFetcher,
  28   'activitypub-follow': processActivityPubFollow,
  29   'video-file-import': processVideoFileImport,
  30   'video-file': processVideoFile,
  31   'email': processEmail,
  32   'video-import': processVideoImport
  33 }
  34
  35 const jobsWithRequestTimeout: { [ id in JobType ]?: boolean } = {
  36   'activitypub-http-broadcast': true,
  37   'activitypub-http-unicast': true,
  38   'activitypub-http-fetcher': true,
  39   'activitypub-follow': true
  40 }
  41
  42 const jobTypes: JobType[] = [
  43   'activitypub-follow',
  44   'activitypub-http-broadcast',
  45   'activitypub-http-fetcher',
  46   'activitypub-http-unicast',
  47   'email',
  48   'video-file',
  49   'video-file-import',
  50   'video-import'
  51 ]
  52
  53 class JobQueue {
  54
  55   private static instance: JobQueue
  56
  57   private queues: { [ id in JobType ]?: Bull.Queue } = {}
  58   private initialized = false
  59   private jobRedisPrefix: string
  60
  61   private constructor () {}
  62
  63   async init () {
  64     // Already initialized
  65     if (this.initialized === true) return
  66     this.initialized = true
  67
  68     this.jobRedisPrefix = 'bull-' + CONFIG.WEBSERVER.HOST
  69     const queueOptions = {
  70       prefix: this.jobRedisPrefix,
  71       redis: Redis.getRedisClient(),
  72       settings: {
  73         maxStalledCount: 10 // transcoding could be long, so jobs can often be interrupted by restarts
  74       }
  75     }
  76
  77     for (const handlerName of Object.keys(handlers)) {
  78       const queue = new Bull(handlerName, queueOptions)
  79       const handler = handlers[handlerName]
  80
  81       queue.process(JOB_CONCURRENCY[handlerName], handler)
  82
  83       queue.on('failed', (job, err) => {
  84         logger.error('Cannot execute job %d in queue %s.', job.id, handlerName, { payload: job.data, err })
  85       })
  86
  87       queue.on('error', err => {
  88         logger.error('Error in job queue %s.', handlerName, { err })
  89         process.exit(-1)
  90       })
  91
  92       this.queues[handlerName] = queue
  93     }
  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     }
 114
 115     if (jobsWithRequestTimeout[obj.type] === true) {
 116       jobArgs.timeout = JOB_REQUEST_TTL
 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   removeOldJobs () {
 169     for (const key of Object.keys(this.queues)) {
 170       const queue = this.queues[key]
 171       queue.clean(JOB_COMPLETED_LIFETIME, 'completed')
 172     }
 173   }
 174
 175   static get Instance () {
 176     return this.instance || (this.instance = new this())
 177   }
 178 }
 179
 180 // ---------------------------------------------------------------------------
 181
 182 export {
 183   JobQueue
 184 }