server/lib/job-queue/handlers/activitypub-follow.ts

   1 import * as kue from 'kue'
   2 import { logger } from '../../../helpers/logger'
   3 import { getServerActor } from '../../../helpers/utils'
   4 import { REMOTE_SCHEME, sequelizeTypescript, SERVER_ACTOR_NAME } from '../../../initializers'
   5 import { sendFollow } from '../../activitypub/send'
   6 import { sanitizeHost } from '../../../helpers/core-utils'
   7 import { loadActorUrlOrGetFromWebfinger } from '../../../helpers/webfinger'
   8 import { getOrCreateActorAndServerAndModel } from '../../activitypub/actor'
   9 import { retryTransactionWrapper } from '../../../helpers/database-utils'
  10 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
  11 import { ActorModel } from '../../../models/activitypub/actor'
  12
  13 export type ActivitypubFollowPayload = {
  14   host: string
  15 }
  16
  17 async function processActivityPubFollow (job: kue.Job) {
  18   const payload = job.data as ActivitypubFollowPayload
  19   const host = payload.host
  20
  21   logger.info('Processing ActivityPub follow in job %d.', job.id)
  22
  23   const sanitizedHost = sanitizeHost(host, REMOTE_SCHEME.HTTP)
  24
  25   const actorUrl = await loadActorUrlOrGetFromWebfinger(SERVER_ACTOR_NAME, sanitizedHost)
  26   const targetActor = await getOrCreateActorAndServerAndModel(actorUrl)
  27
  28   const fromActor = await getServerActor()
  29   const options = {
  30     arguments: [ fromActor, targetActor ],
  31     errorMessage: 'Cannot follow with many retries.'
  32   }
  33
  34   return retryTransactionWrapper(follow, options)
  35 }
  36 // ---------------------------------------------------------------------------
  37
  38 export {
  39   processActivityPubFollow
  40 }
  41
  42 // ---------------------------------------------------------------------------
  43
  44 function follow (fromActor: ActorModel, targetActor: ActorModel) {
  45   if (fromActor.id === targetActor.id) {
  46     throw new Error('Follower is the same than target actor.')
  47   }
  48
  49   return sequelizeTypescript.transaction(async t => {
  50     const [ actorFollow ] = await ActorFollowModel.findOrCreate({
  51       where: {
  52         actorId: fromActor.id,
  53         targetActorId: targetActor.id
  54       },
  55       defaults: {
  56         state: 'pending',
  57         actorId: fromActor.id,
  58         targetActorId: targetActor.id
  59       },
  60       transaction: t
  61     })
  62     actorFollow.ActorFollowing = targetActor
  63     actorFollow.ActorFollower = fromActor
  64
  65     // Send a notification to remote server
  66     await sendFollow(actorFollow)
  67   })
  68 }