From e1ab52d7ec7370a6f9f5937192d6003206af1ac0 Mon Sep 17 00:00:00 2001
From: kontrollanten <6680299+kontrollanten@users.noreply.github.com>
Date: Tue, 9 Nov 2021 11:05:35 +0100
Subject: Add migrate-to-object-storage script (#4481)

* add migrate-to-object-storage-script

closes #4467

* add migrate-to-unique-playlist-filenames script

* fix(migrate-to-unique-playlist-filenames): update master/segments256

run updateMasterHLSPlaylist and updateSha256VODSegments after
file rename.

* Improve move to object storage scripts

* PR remarks

Co-authored-by: Chocobozzz <me@florianbigard.com>
---
 scripts/migrations/peertube-4.0.ts | 107 +++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 scripts/migrations/peertube-4.0.ts

(limited to 'scripts/migrations')

diff --git a/scripts/migrations/peertube-4.0.ts b/scripts/migrations/peertube-4.0.ts
new file mode 100644
index 000000000..387f6dc9c
--- /dev/null
+++ b/scripts/migrations/peertube-4.0.ts
@@ -0,0 +1,107 @@
+import { registerTSPaths } from '../../server/helpers/register-ts-paths'
+registerTSPaths()
+
+import { join } from 'path'
+import { JobQueue } from '@server/lib/job-queue'
+import { initDatabaseModels } from '../../server/initializers/database'
+import { generateHLSMasterPlaylistFilename, generateHlsSha256SegmentsFilename, getHlsResolutionPlaylistFilename } from '@server/lib/paths'
+import { VideoPathManager } from '@server/lib/video-path-manager'
+import { VideoModel } from '@server/models/video/video'
+import { VideoStreamingPlaylistModel } from '@server/models/video/video-streaming-playlist'
+import { move, readFile, writeFile } from 'fs-extra'
+import Bluebird from 'bluebird'
+import { federateVideoIfNeeded } from '@server/lib/activitypub/videos'
+
+run()
+  .then(() => process.exit(0))
+  .catch(err => {
+    console.error(err)
+    process.exit(-1)
+  })
+
+async function run () {
+  console.log('Migrate old HLS paths to new format.')
+
+  await initDatabaseModels(true)
+
+  JobQueue.Instance.init(true)
+
+  const ids = await VideoModel.listLocalIds()
+
+  await Bluebird.map(ids, async id => {
+    try {
+      await processVideo(id)
+    } catch (err) {
+      console.error('Cannot process video %s.', { err })
+    }
+  }, { concurrency: 5 })
+
+  console.log('Migration finished!')
+}
+
+async function processVideo (videoId: number) {
+  const video = await VideoModel.loadWithFiles(videoId)
+
+  const hls = video.getHLSPlaylist()
+  if (!hls || hls.playlistFilename !== 'master.m3u8' || hls.VideoFiles.length === 0) {
+    return
+  }
+
+  console.log(`Renaming HLS playlist files of video ${video.name}.`)
+
+  const playlist = await VideoStreamingPlaylistModel.loadHLSPlaylistByVideo(video.id)
+  const hlsDirPath = VideoPathManager.Instance.getFSHLSOutputPath(video)
+
+  const masterPlaylistPath = join(hlsDirPath, playlist.playlistFilename)
+  let masterPlaylistContent = await readFile(masterPlaylistPath, 'utf8')
+
+  for (const videoFile of hls.VideoFiles) {
+    const srcName = `${videoFile.resolution}.m3u8`
+    const dstName = getHlsResolutionPlaylistFilename(videoFile.filename)
+
+    const src = join(hlsDirPath, srcName)
+    const dst = join(hlsDirPath, dstName)
+
+    try {
+      await move(src, dst)
+
+      masterPlaylistContent = masterPlaylistContent.replace(new RegExp('^' + srcName + '$', 'm'), dstName)
+    } catch (err) {
+      console.error('Cannot move video file %s to %s.', src, dst, err)
+    }
+  }
+
+  await writeFile(masterPlaylistPath, masterPlaylistContent)
+
+  if (playlist.segmentsSha256Filename === 'segments-sha256.json') {
+    try {
+      const newName = generateHlsSha256SegmentsFilename(video.isLive)
+
+      const dst = join(hlsDirPath, newName)
+      await move(join(hlsDirPath, playlist.segmentsSha256Filename), dst)
+      playlist.segmentsSha256Filename = newName
+    } catch (err) {
+      console.error(`Cannot rename ${video.name} segments-sha256.json file to a new name`, err)
+    }
+  }
+
+  if (playlist.playlistFilename === 'master.m3u8') {
+    try {
+      const newName = generateHLSMasterPlaylistFilename(video.isLive)
+
+      const dst = join(hlsDirPath, newName)
+      await move(join(hlsDirPath, playlist.playlistFilename), dst)
+      playlist.playlistFilename = newName
+    } catch (err) {
+      console.error(`Cannot rename ${video.name} master.m3u8 file to a new name`, err)
+    }
+  }
+
+  // Everything worked, we can save the playlist now
+  await playlist.save()
+
+  const allVideo = await VideoModel.loadAndPopulateAccountAndServerAndTags(video.id)
+  await federateVideoIfNeeded(allVideo, false)
+
+  console.log(`Successfully moved HLS files of ${video.name}.`)
+}
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