server/lib/video-tokens-manager.ts

   1 import LRUCache from 'lru-cache'
   2 import { LRU_CACHE } from '@server/initializers/constants'
   3 import { buildUUID } from '@shared/extra-utils'
   4
   5 // ---------------------------------------------------------------------------
   6 // Create temporary tokens that can be used as URL query parameters to access video static files
   7 // ---------------------------------------------------------------------------
   8
   9 class VideoTokensManager {
  10
  11   private static instance: VideoTokensManager
  12
  13   private readonly lruCache = new LRUCache<string, string>({
  14     max: LRU_CACHE.VIDEO_TOKENS.MAX_SIZE,
  15     ttl: LRU_CACHE.VIDEO_TOKENS.TTL
  16   })
  17
  18   private constructor () {}
  19
  20   create (videoUUID: string) {
  21     const token = buildUUID()
  22
  23     const expires = new Date(new Date().getTime() + LRU_CACHE.VIDEO_TOKENS.TTL)
  24
  25     this.lruCache.set(token, videoUUID)
  26
  27     return { token, expires }
  28   }
  29
  30   hasToken (options: {
  31     token: string
  32     videoUUID: string
  33   }) {
  34     const value = this.lruCache.get(options.token)
  35     if (!value) return false
  36
  37     return value === options.videoUUID
  38   }
  39
  40   static get Instance () {
  41     return this.instance || (this.instance = new this())
  42   }
  43 }
  44
  45 // ---------------------------------------------------------------------------
  46
  47 export {
  48   VideoTokensManager
  49 }