PeerTube/server/lib/actor-follow-health-cache.ts
2021-10-13 16:18:42 +02:00

87 lines
2.2 KiB
TypeScript

import { ACTOR_FOLLOW_SCORE } from '../initializers/constants'
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 ActorFollowHealthCache {
private static instance: ActorFollowHealthCache
private pendingFollowsScore: { [ url: string ]: number } = {}
private pendingBadServer = new Set<number>()
private pendingGoodServer = new Set<number>()
private readonly badInboxes = new Set<string>()
private constructor () {}
static get Instance () {
return this.instance || (this.instance = new this())
}
updateActorFollowsHealth (goodInboxes: string[], badInboxes: string[]) {
this.badInboxes.clear()
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, { badInboxes }
)
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
this.badInboxes.add(badInbox)
}
}
isBadInbox (inboxUrl: string) {
return this.badInboxes.has(inboxUrl)
}
addBadServerId (serverId: number) {
this.pendingBadServer.add(serverId)
}
getBadFollowingServerIds () {
return Array.from(this.pendingBadServer)
}
clearBadFollowingServerIds () {
this.pendingBadServer = new Set<number>()
}
addGoodServerId (serverId: number) {
this.pendingGoodServer.add(serverId)
}
getGoodFollowingServerIds () {
return Array.from(this.pendingGoodServer)
}
clearGoodFollowingServerIds () {
this.pendingGoodServer = new Set<number>()
}
getPendingFollowsScore () {
return this.pendingFollowsScore
}
clearPendingFollowsScore () {
this.pendingFollowsScore = {}
}
}
export {
ActorFollowHealthCache
}