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