server/lib/activitypub/process/process-follow.ts

   1 import { ActivityFollow } from '../../../../shared/models/activitypub'
   2 import { retryTransactionWrapper } from '../../../helpers/database-utils'
   3 import { logger } from '../../../helpers/logger'
   4 import { sequelizeTypescript } from '../../../initializers'
   5 import { ActorModel } from '../../../models/activitypub/actor'
   6 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
   7 import { getOrCreateActorAndServerAndModel } from '../actor'
   8 import { sendAccept } from '../send'
   9
  10 async function processFollowActivity (activity: ActivityFollow) {
  11   const activityObject = activity.object
  12   const actor = await getOrCreateActorAndServerAndModel(activity.actor)
  13
  14   return retryTransactionWrapper(processFollow, actor, activityObject)
  15 }
  16
  17 // ---------------------------------------------------------------------------
  18
  19 export {
  20   processFollowActivity
  21 }
  22
  23 // ---------------------------------------------------------------------------
  24
  25 async function processFollow (actor: ActorModel, targetActorURL: string) {
  26   await sequelizeTypescript.transaction(async t => {
  27     const targetActor = await ActorModel.loadByUrl(targetActorURL, t)
  28
  29     if (!targetActor) throw new Error('Unknown actor')
  30     if (targetActor.isOwned() === false) throw new Error('This is not a local actor.')
  31
  32     const [ actorFollow ] = await ActorFollowModel.findOrCreate({
  33       where: {
  34         actorId: actor.id,
  35         targetActorId: targetActor.id
  36       },
  37       defaults: {
  38         actorId: actor.id,
  39         targetActorId: targetActor.id,
  40         state: 'accepted'
  41       },
  42       transaction: t
  43     })
  44
  45     actorFollow.ActorFollower = actor
  46     actorFollow.ActorFollowing = targetActor
  47
  48     if (actorFollow.state !== 'accepted') {
  49       actorFollow.state = 'accepted'
  50       await actorFollow.save({ transaction: t })
  51     }
  52
  53     actorFollow.ActorFollower = actor
  54     actorFollow.ActorFollowing = targetActor
  55
  56     // Target sends to actor he accepted the follow request
  57     return sendAccept(actorFollow)
  58   })
  59
  60   logger.info('Actor %s is followed by actor %s.', targetActorURL, actor.url)
  61 }