From f012319a644fe8d9d33f2f567fa828442a3b39fd Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Wed, 16 Mar 2022 15:34:21 +0100
Subject: Process video torrents in order

Prevent update before video torrent generation for example
---
 .../lib/job-queue/handlers/manage-video-torrent.ts | 88 ++++++++++++++++++++++
 server/lib/job-queue/job-queue.ts                  |  7 +-
 2 files changed, 94 insertions(+), 1 deletion(-)
 create mode 100644 server/lib/job-queue/handlers/manage-video-torrent.ts

(limited to 'server/lib')

diff --git a/server/lib/job-queue/handlers/manage-video-torrent.ts b/server/lib/job-queue/handlers/manage-video-torrent.ts
new file mode 100644
index 000000000..5cb4287e1
--- /dev/null
+++ b/server/lib/job-queue/handlers/manage-video-torrent.ts
@@ -0,0 +1,88 @@
+import { Job } from 'bull'
+import { createTorrentAndSetInfoHash, updateTorrentMetadata } from '@server/helpers/webtorrent'
+import { VideoModel } from '@server/models/video/video'
+import { VideoFileModel } from '@server/models/video/video-file'
+import { VideoStreamingPlaylistModel } from '@server/models/video/video-streaming-playlist'
+import { ManageVideoTorrentPayload } from '@shared/models'
+import { logger } from '../../../helpers/logger'
+
+async function processManageVideoTorrent (job: Job) {
+  const payload = job.data as ManageVideoTorrentPayload
+  logger.info('Processing torrent in job %d.', job.id)
+
+  if (payload.action === 'create') return doCreateAction(payload)
+  if (payload.action === 'update-metadata') return doUpdateMetadataAction(payload)
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  processManageVideoTorrent
+}
+
+// ---------------------------------------------------------------------------
+
+async function doCreateAction (payload: ManageVideoTorrentPayload & { action: 'create' }) {
+  const [ video, file ] = await Promise.all([
+    loadVideoOrLog(payload.videoId),
+    loadFileOrLog(payload.videoFileId)
+  ])
+
+  await createTorrentAndSetInfoHash(video, file)
+
+  // Refresh videoFile because the createTorrentAndSetInfoHash could be long
+  const refreshedFile = await VideoFileModel.loadWithVideo(file.id)
+  // File does not exist anymore, remove the generated torrent
+  if (!refreshedFile) return file.removeTorrent()
+
+  refreshedFile.infoHash = file.infoHash
+  refreshedFile.torrentFilename = file.torrentFilename
+
+  return refreshedFile.save()
+}
+
+async function doUpdateMetadataAction (payload: ManageVideoTorrentPayload & { action: 'update-metadata' }) {
+  const [ video, streamingPlaylist, file ] = await Promise.all([
+    loadVideoOrLog(payload.videoId),
+    loadStreamingPlaylistOrLog(payload.streamingPlaylistId),
+    loadFileOrLog(payload.videoFileId)
+  ])
+
+  await updateTorrentMetadata(video || streamingPlaylist, file)
+
+  await file.save()
+}
+
+async function loadVideoOrLog (videoId: number) {
+  if (!videoId) return undefined
+
+  const video = await VideoModel.load(videoId)
+  if (!video) {
+    logger.debug('Do not process torrent for video %d: does not exist anymore.', videoId)
+  }
+
+  return video
+}
+
+async function loadStreamingPlaylistOrLog (streamingPlaylistId: number) {
+  if (!streamingPlaylistId) return undefined
+
+  const streamingPlaylist = await VideoStreamingPlaylistModel.loadWithVideo(streamingPlaylistId)
+  if (!streamingPlaylist) {
+    logger.debug('Do not process torrent for streaming playlist %d: does not exist anymore.', streamingPlaylistId)
+  }
+
+  return streamingPlaylist
+}
+
+async function loadFileOrLog (videoFileId: number) {
+  if (!videoFileId) return undefined
+
+  const file = await VideoFileModel.loadWithVideo(videoFileId)
+
+  if (!file) {
+    logger.debug('Do not process torrent for file %d: does not exist anymore.', videoFileId)
+  }
+
+  return file
+}
diff --git a/server/lib/job-queue/job-queue.ts b/server/lib/job-queue/job-queue.ts
index e10a3bab5..3224abcc3 100644
--- a/server/lib/job-queue/job-queue.ts
+++ b/server/lib/job-queue/job-queue.ts
@@ -12,6 +12,7 @@ import {
   EmailPayload,
   JobState,
   JobType,
+  ManageVideoTorrentPayload,
   MoveObjectStoragePayload,
   RefreshPayload,
   VideoEditionPayload,
@@ -31,6 +32,7 @@ import { processActivityPubHttpUnicast } from './handlers/activitypub-http-unica
 import { refreshAPObject } from './handlers/activitypub-refresher'
 import { processActorKeys } from './handlers/actor-keys'
 import { processEmail } from './handlers/email'
+import { processManageVideoTorrent } from './handlers/manage-video-torrent'
 import { processMoveToObjectStorage } from './handlers/move-to-object-storage'
 import { processVideoEdition } from './handlers/video-edition'
 import { processVideoFileImport } from './handlers/video-file-import'
@@ -56,6 +58,7 @@ type CreateJobArgument =
   { type: 'video-redundancy', payload: VideoRedundancyPayload } |
   { type: 'delete-resumable-upload-meta-file', payload: DeleteResumableUploadMetaFilePayload } |
   { type: 'video-edition', payload: VideoEditionPayload } |
+  { type: 'manage-video-torrent', payload: ManageVideoTorrentPayload } |
   { type: 'move-to-object-storage', payload: MoveObjectStoragePayload }
 
 export type CreateJobOptions = {
@@ -79,6 +82,7 @@ const handlers: { [id in JobType]: (job: Job) => Promise<any> } = {
   'actor-keys': processActorKeys,
   'video-redundancy': processVideoRedundancy,
   'move-to-object-storage': processMoveToObjectStorage,
+  'manage-video-torrent': processManageVideoTorrent,
   'video-edition': processVideoEdition
 }
 
@@ -98,6 +102,7 @@ const jobTypes: JobType[] = [
   'actor-keys',
   'video-live-ending',
   'move-to-object-storage',
+  'manage-video-torrent',
   'video-edition'
 ]
 
@@ -185,7 +190,7 @@ class JobQueue {
   }
 
   createJobWithPromise (obj: CreateJobArgument, options: CreateJobOptions = {}) {
-    const queue = this.queues[obj.type]
+    const queue: Queue = this.queues[obj.type]
     if (queue === undefined) {
       logger.error('Unknown queue %s: cannot create job.', obj.type)
       return
-- 
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