PeerTube/server/lib/activitypub/send/utils.ts

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import { Transaction } from 'sequelize'
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import { Activity, ActivityAudience } from '../../../../shared/models/activitypub'
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import { logger } from '../../../helpers/logger'
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import { ActorModel } from '../../../models/activitypub/actor'
import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
import { JobQueue } from '../../job-queue'
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import { getActorsInvolvedInVideo, getAudienceFromFollowersOf, getRemoteVideoAudience } from '../audience'
import { getServerActor } from '../../../helpers/utils'
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import { afterCommitIfTransaction } from '../../../helpers/database-utils'
import { MActorWithInboxes, MActor, MActorId, MActorLight, MVideo, MVideoAccountLight } from '../../../typings/models'
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async function sendVideoRelatedActivity (activityBuilder: (audience: ActivityAudience) => Activity, options: {
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byActor: MActorLight,
video: MVideoAccountLight,
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transaction?: Transaction
}) {
const { byActor, video, transaction } = options
const actorsInvolvedInVideo = await getActorsInvolvedInVideo(video, transaction)
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// Send to origin
if (video.isOwned() === false) {
const audience = getRemoteVideoAudience(video, actorsInvolvedInVideo)
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const activity = activityBuilder(audience)
return afterCommitIfTransaction(transaction, () => {
return unicastTo(activity, byActor, video.VideoChannel.Account.Actor.getSharedInbox())
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})
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}
// Send to followers
const audience = getAudienceFromFollowersOf(actorsInvolvedInVideo)
const activity = activityBuilder(audience)
const actorsException = [ byActor ]
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return broadcastToFollowers(activity, byActor, actorsInvolvedInVideo, transaction, actorsException)
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}
async function forwardVideoRelatedActivity (
activity: Activity,
t: Transaction,
followersException: MActorWithInboxes[] = [],
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video: MVideo
) {
// Mastodon does not add our announces in audience, so we forward to them manually
const additionalActors = await getActorsInvolvedInVideo(video, t)
const additionalFollowerUrls = additionalActors.map(a => a.followersUrl)
return forwardActivity(activity, t, followersException, additionalFollowerUrls)
}
async function forwardActivity (
activity: Activity,
t: Transaction,
followersException: MActorWithInboxes[] = [],
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additionalFollowerUrls: string[] = []
) {
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logger.info('Forwarding activity %s.', activity.id)
const to = activity.to || []
const cc = activity.cc || []
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const followersUrls = additionalFollowerUrls
for (const dest of to.concat(cc)) {
if (dest.endsWith('/followers')) {
followersUrls.push(dest)
}
}
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const toActorFollowers = await ActorModel.listByFollowersUrls(followersUrls, t)
const uris = await computeFollowerUris(toActorFollowers, followersException, t)
if (uris.length === 0) {
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logger.info('0 followers for %s, no forwarding.', toActorFollowers.map(a => a.id).join(', '))
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return undefined
}
logger.debug('Creating forwarding job.', { uris })
const payload = {
uris,
body: activity
}
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return afterCommitIfTransaction(t, () => JobQueue.Instance.createJob({ type: 'activitypub-http-broadcast', payload }))
}
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async function broadcastToFollowers (
data: any,
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byActor: MActorId,
toFollowersOf: MActorId[],
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t: Transaction,
actorsException: MActorWithInboxes[] = []
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) {
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const uris = await computeFollowerUris(toFollowersOf, actorsException, t)
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return afterCommitIfTransaction(t, () => broadcastTo(uris, data, byActor))
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}
async function broadcastToActors (
data: any,
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byActor: MActorId,
toActors: MActor[],
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t?: Transaction,
actorsException: MActorWithInboxes[] = []
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) {
const uris = await computeUris(toActors, actorsException)
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return afterCommitIfTransaction(t, () => broadcastTo(uris, data, byActor))
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}
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function broadcastTo (uris: string[], data: any, byActor: MActorId) {
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if (uris.length === 0) return undefined
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logger.debug('Creating broadcast job.', { uris })
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const payload = {
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uris,
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signatureActorId: byActor.id,
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body: data
}
return JobQueue.Instance.createJob({ type: 'activitypub-http-broadcast', payload })
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}
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function unicastTo (data: any, byActor: MActorId, toActorUrl: string) {
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logger.debug('Creating unicast job.', { uri: toActorUrl })
const payload = {
uri: toActorUrl,
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signatureActorId: byActor.id,
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body: data
}
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JobQueue.Instance.createJob({ type: 'activitypub-http-unicast', payload })
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}
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// ---------------------------------------------------------------------------
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export {
broadcastToFollowers,
unicastTo,
forwardActivity,
broadcastToActors,
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forwardVideoRelatedActivity,
sendVideoRelatedActivity
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}
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// ---------------------------------------------------------------------------
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async function computeFollowerUris (toFollowersOf: MActorId[], actorsException: MActorWithInboxes[], t: Transaction) {
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const toActorFollowerIds = toFollowersOf.map(a => a.id)
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const result = await ActorFollowModel.listAcceptedFollowerSharedInboxUrls(toActorFollowerIds, t)
const sharedInboxesException = await buildSharedInboxesException(actorsException)
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return result.data.filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
}
async function computeUris (toActors: MActor[], actorsException: MActorWithInboxes[] = []) {
const serverActor = await getServerActor()
const targetUrls = toActors
.filter(a => a.id !== serverActor.id) // Don't send to ourselves
.map(a => a.getSharedInbox())
const toActorSharedInboxesSet = new Set(targetUrls)
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const sharedInboxesException = await buildSharedInboxesException(actorsException)
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return Array.from(toActorSharedInboxesSet)
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.filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
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}
async function buildSharedInboxesException (actorsException: MActorWithInboxes[]) {
const serverActor = await getServerActor()
return actorsException
.map(f => f.getSharedInbox())
.concat([ serverActor.sharedInboxUrl ])
}