server/lib/schedulers/auto-follow-index-instances.ts

   1 import { logger } from '../../helpers/logger'
   2 import { AbstractScheduler } from './abstract-scheduler'
   3 import { INSTANCES_INDEX, SCHEDULER_INTERVALS_MS, SERVER_ACTOR_NAME } from '../../initializers/constants'
   4 import { CONFIG } from '../../initializers/config'
   5 import { chunk } from 'lodash'
   6 import { doRequest } from '@server/helpers/requests'
   7 import { ActorFollowModel } from '@server/models/activitypub/actor-follow'
   8 import { JobQueue } from '@server/lib/job-queue'
   9 import { getServerActor } from '@server/helpers/utils'
  10
  11 export class AutoFollowIndexInstances extends AbstractScheduler {
  12
  13   private static instance: AbstractScheduler
  14
  15   protected schedulerIntervalMs = SCHEDULER_INTERVALS_MS.autoFollowIndexInstances
  16
  17   private lastCheck: Date
  18
  19   private constructor () {
  20     super()
  21   }
  22
  23   protected async internalExecute () {
  24     return this.autoFollow()
  25   }
  26
  27   private async autoFollow () {
  28     if (CONFIG.FOLLOWINGS.INSTANCE.AUTO_FOLLOW_INDEX.ENABLED === false) return
  29
  30     const indexUrl = CONFIG.FOLLOWINGS.INSTANCE.AUTO_FOLLOW_INDEX.INDEX_URL
  31
  32     logger.info('Auto follow instances of index %s.', indexUrl)
  33
  34     try {
  35       const serverActor = await getServerActor()
  36
  37       const uri = indexUrl + INSTANCES_INDEX.HOSTS_PATH
  38
  39       const qs = this.lastCheck ? { since: this.lastCheck.toISOString() } : {}
  40       this.lastCheck = new Date()
  41
  42       const { body } = await doRequest({ uri, qs, json: true })
  43
  44       const hosts: string[] = body.data.map(o => o.host)
  45       const chunks = chunk(hosts, 20)
  46
  47       for (const chunk of chunks) {
  48         const unfollowedHosts = await ActorFollowModel.keepUnfollowedInstance(chunk)
  49
  50         for (const unfollowedHost of unfollowedHosts) {
  51           const payload = {
  52             host: unfollowedHost,
  53             name: SERVER_ACTOR_NAME,
  54             followerActorId: serverActor.id,
  55             isAutoFollow: true
  56           }
  57
  58           await JobQueue.Instance.createJob({ type: 'activitypub-follow', payload })
  59                   .catch(err => logger.error('Cannot create follow job for %s.', unfollowedHost, err))
  60         }
  61       }
  62
  63     } catch (err) {
  64       logger.error('Cannot auto follow hosts of index %s.', indexUrl, { err })
  65     }
  66
  67   }
  68
  69   static get Instance () {
  70     return this.instance || (this.instance = new this())
  71   }
  72 }