PeerTube/server/lib/cache/actor-follow-score-cache.ts

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import { ACTOR_FOLLOW_SCORE } from '../../initializers'
import { logger } from '../../helpers/logger'
// Cache follows scores, instead of writing them too often in database
// Keep data in memory, we don't really need Redis here as we don't really care to loose some scores
class ActorFollowScoreCache {
private static instance: ActorFollowScoreCache
private pendingFollowsScore: { [ url: string ]: number } = {}
private constructor () {}
static get Instance () {
return this.instance || (this.instance = new this())
}
updateActorFollowsScore (goodInboxes: string[], badInboxes: string[]) {
if (goodInboxes.length === 0 && badInboxes.length === 0) return
logger.info('Updating %d good actor follows and %d bad actor follows scores in cache.', goodInboxes.length, badInboxes.length)
for (const goodInbox of goodInboxes) {
if (this.pendingFollowsScore[goodInbox] === undefined) this.pendingFollowsScore[goodInbox] = 0
this.pendingFollowsScore[goodInbox] += ACTOR_FOLLOW_SCORE.BONUS
}
for (const badInbox of badInboxes) {
if (this.pendingFollowsScore[badInbox] === undefined) this.pendingFollowsScore[badInbox] = 0
this.pendingFollowsScore[badInbox] += ACTOR_FOLLOW_SCORE.PENALTY
}
}
getPendingFollowsScoreCopy () {
return this.pendingFollowsScore
}
clearPendingFollowsScore () {
this.pendingFollowsScore = {}
}
}
export {
ActorFollowScoreCache
}