]> git.immae.eu Git - github/Chocobozzz/PeerTube.git/blobdiff - server/lib/hls.ts
Relax log level
[github/Chocobozzz/PeerTube.git] / server / lib / hls.ts
index 10db6c3c345ae0ce7bdabd7f9ccb3338a89fa5b3..43043315be6ed42dc752d029ca87ebb30ba67de2 100644 (file)
-import { VideoModel } from '../models/video/video'
+import { close, ensureDir, move, open, outputJSON, read, readFile, remove, stat, writeFile } from 'fs-extra'
+import { flatten, uniq } from 'lodash'
 import { basename, dirname, join } from 'path'
-import { HLS_PLAYLIST_DIRECTORY, CONFIG } from '../initializers'
-import { outputJSON, pathExists, readdir, readFile, remove, writeFile, move } from 'fs-extra'
-import { getVideoFileSize } from '../helpers/ffmpeg-utils'
-import { sha256 } from '../helpers/core-utils'
-import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist'
-import HLSDownloader from 'hlsdownloader'
+import { MStreamingPlaylistFilesVideo, MVideo, MVideoUUID } from '@server/types/models'
+import { sha256 } from '@shared/extra-utils'
+import { VideoStorage } from '@shared/models'
+import { getAudioStreamCodec, getVideoStreamCodec, getVideoStreamDimensionsInfo } from '../helpers/ffmpeg'
 import { logger } from '../helpers/logger'
-import { parse } from 'url'
+import { doRequest, doRequestAndSaveToFile } from '../helpers/requests'
+import { generateRandomString } from '../helpers/utils'
+import { CONFIG } from '../initializers/config'
+import { P2P_MEDIA_LOADER_PEER_VERSION, REQUEST_TIMEOUTS } from '../initializers/constants'
+import { sequelizeTypescript } from '../initializers/database'
+import { VideoFileModel } from '../models/video/video-file'
+import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist'
+import { storeHLSFile } from './object-storage'
+import { getHlsResolutionPlaylistFilename } from './paths'
+import { VideoPathManager } from './video-path-manager'
+
+async function updateStreamingPlaylistsInfohashesIfNeeded () {
+  const playlistsToUpdate = await VideoStreamingPlaylistModel.listByIncorrectPeerVersion()
+
+  // Use separate SQL queries, because we could have many videos to update
+  for (const playlist of playlistsToUpdate) {
+    await sequelizeTypescript.transaction(async t => {
+      const videoFiles = await VideoFileModel.listByStreamingPlaylist(playlist.id, t)
+
+      playlist.assignP2PMediaLoaderInfoHashes(playlist.Video, videoFiles)
+      playlist.p2pMediaLoaderPeerVersion = P2P_MEDIA_LOADER_PEER_VERSION
+
+      await playlist.save({ transaction: t })
+    })
+  }
+}
 
-async function updateMasterHLSPlaylist (video: VideoModel) {
-  const directory = join(HLS_PLAYLIST_DIRECTORY, video.uuid)
+async function updateMasterHLSPlaylist (video: MVideo, playlist: MStreamingPlaylistFilesVideo) {
   const masterPlaylists: string[] = [ '#EXTM3U', '#EXT-X-VERSION:3' ]
-  const masterPlaylistPath = join(directory, VideoStreamingPlaylistModel.getMasterHlsPlaylistFilename())
 
-  for (const file of video.VideoFiles) {
-    // If we did not generated a playlist for this resolution, skip
-    const filePlaylistPath = join(directory, VideoStreamingPlaylistModel.getHlsPlaylistFilename(file.resolution))
-    if (await pathExists(filePlaylistPath) === false) continue
+  for (const file of playlist.VideoFiles) {
+    const playlistFilename = getHlsResolutionPlaylistFilename(file.filename)
 
-    const videoFilePath = video.getVideoFilePath(file)
+    await VideoPathManager.Instance.makeAvailableVideoFile(file.withVideoOrPlaylist(playlist), async videoFilePath => {
+      const size = await getVideoStreamDimensionsInfo(videoFilePath)
 
-    const size = await getVideoFileSize(videoFilePath)
+      const bandwidth = 'BANDWIDTH=' + video.getBandwidthBits(file)
+      const resolution = `RESOLUTION=${size?.width || 0}x${size?.height || 0}`
 
-    const bandwidth = 'BANDWIDTH=' + video.getBandwidthBits(file)
-    const resolution = `RESOLUTION=${size.width}x${size.height}`
+      let line = `#EXT-X-STREAM-INF:${bandwidth},${resolution}`
+      if (file.fps) line += ',FRAME-RATE=' + file.fps
 
-    let line = `#EXT-X-STREAM-INF:${bandwidth},${resolution}`
-    if (file.fps) line += ',FRAME-RATE=' + file.fps
+      const codecs = await Promise.all([
+        getVideoStreamCodec(videoFilePath),
+        getAudioStreamCodec(videoFilePath)
+      ])
 
-    masterPlaylists.push(line)
-    masterPlaylists.push(VideoStreamingPlaylistModel.getHlsPlaylistFilename(file.resolution))
+      line += `,CODECS="${codecs.filter(c => !!c).join(',')}"`
+
+      masterPlaylists.push(line)
+      masterPlaylists.push(playlistFilename)
+    })
   }
 
-  await writeFile(masterPlaylistPath, masterPlaylists.join('\n') + '\n')
+  await VideoPathManager.Instance.makeAvailablePlaylistFile(playlist, playlist.playlistFilename, async masterPlaylistPath => {
+    await writeFile(masterPlaylistPath, masterPlaylists.join('\n') + '\n')
+
+    if (playlist.storage === VideoStorage.OBJECT_STORAGE) {
+      await storeHLSFile(playlist, playlist.playlistFilename, masterPlaylistPath)
+    }
+  })
 }
 
-async function updateSha256Segments (video: VideoModel) {
-  const directory = join(HLS_PLAYLIST_DIRECTORY, video.uuid)
-  const files = await readdir(directory)
-  const json: { [filename: string]: string} = {}
+async function updateSha256VODSegments (video: MVideoUUID, playlist: MStreamingPlaylistFilesVideo) {
+  const json: { [filename: string]: { [range: string]: string } } = {}
 
-  for (const file of files) {
-    if (file.endsWith('.ts') === false) continue
+  // For all the resolutions available for this video
+  for (const file of playlist.VideoFiles) {
+    const rangeHashes: { [range: string]: string } = {}
+    const fileWithPlaylist = file.withVideoOrPlaylist(playlist)
 
-    const buffer = await readFile(join(directory, file))
-    const filename = basename(file)
+    await VideoPathManager.Instance.makeAvailableVideoFile(fileWithPlaylist, videoPath => {
 
-    json[filename] = sha256(buffer)
+      return VideoPathManager.Instance.makeAvailableResolutionPlaylistFile(fileWithPlaylist, async resolutionPlaylistPath => {
+        const playlistContent = await readFile(resolutionPlaylistPath)
+        const ranges = getRangesFromPlaylist(playlistContent.toString())
+
+        const fd = await open(videoPath, 'r')
+        for (const range of ranges) {
+          const buf = Buffer.alloc(range.length)
+          await read(fd, buf, 0, range.length, range.offset)
+
+          rangeHashes[`${range.offset}-${range.offset + range.length - 1}`] = sha256(buf)
+        }
+        await close(fd)
+
+        const videoFilename = file.filename
+        json[videoFilename] = rangeHashes
+      })
+    })
   }
 
-  const outputPath = join(directory, VideoStreamingPlaylistModel.getHlsSha256SegmentsFilename())
+  const outputPath = VideoPathManager.Instance.getFSHLSOutputPath(video, playlist.segmentsSha256Filename)
   await outputJSON(outputPath, json)
+
+  if (playlist.storage === VideoStorage.OBJECT_STORAGE) {
+    await storeHLSFile(playlist, playlist.segmentsSha256Filename)
+    await remove(outputPath)
+  }
 }
 
-function downloadPlaylistSegments (playlistUrl: string, destinationDir: string, timeout: number) {
+async function buildSha256Segment (segmentPath: string) {
+  const buf = await readFile(segmentPath)
+  return sha256(buf)
+}
+
+function downloadPlaylistSegments (playlistUrl: string, destinationDir: string, timeout: number, bodyKBLimit: number) {
   let timer
+  let remainingBodyKBLimit = bodyKBLimit
 
   logger.info('Importing HLS playlist %s', playlistUrl)
 
-  const params = {
-    playlistURL: playlistUrl,
-    destination: CONFIG.STORAGE.TMP_DIR
-  }
-  const downloader = new HLSDownloader(params)
+  return new Promise<void>(async (res, rej) => {
+    const tmpDirectory = join(CONFIG.STORAGE.TMP_DIR, await generateRandomString(10))
 
-  const hlsDestinationDir = join(CONFIG.STORAGE.TMP_DIR, dirname(parse(playlistUrl).pathname))
+    await ensureDir(tmpDirectory)
 
-  return new Promise<string>(async (res, rej) => {
-    downloader.startDownload(err => {
-      clearTimeout(timer)
+    timer = setTimeout(() => {
+      deleteTmpDirectory(tmpDirectory)
+
+      return rej(new Error('HLS download timeout.'))
+    }, timeout)
 
-      if (err) {
-        deleteTmpDirectory(hlsDestinationDir)
+    try {
+      // Fetch master playlist
+      const subPlaylistUrls = await fetchUniqUrls(playlistUrl)
 
-        return rej(err)
-      }
+      const subRequests = subPlaylistUrls.map(u => fetchUniqUrls(u))
+      const fileUrls = uniq(flatten(await Promise.all(subRequests)))
 
-      move(hlsDestinationDir, destinationDir, { overwrite: true })
-        .then(() => res())
-        .catch(err => {
-          deleteTmpDirectory(hlsDestinationDir)
+      logger.debug('Will download %d HLS files.', fileUrls.length, { fileUrls })
 
-          return rej(err)
-        })
-    })
+      for (const fileUrl of fileUrls) {
+        const destPath = join(tmpDirectory, basename(fileUrl))
 
-    timer = setTimeout(() => {
-      deleteTmpDirectory(hlsDestinationDir)
+        await doRequestAndSaveToFile(fileUrl, destPath, { bodyKBLimit: remainingBodyKBLimit, timeout: REQUEST_TIMEOUTS.REDUNDANCY })
 
-      return rej(new Error('HLS download timeout.'))
-    }, timeout)
+        const { size } = await stat(destPath)
+        remainingBodyKBLimit -= (size / 1000)
+
+        logger.debug('Downloaded HLS playlist file %s with %d kB remained limit.', fileUrl, Math.floor(remainingBodyKBLimit))
+      }
+
+      clearTimeout(timer)
+
+      await move(tmpDirectory, destinationDir, { overwrite: true })
 
-    function deleteTmpDirectory (directory: string) {
-      remove(directory)
-        .catch(err => logger.error('Cannot delete path on HLS download error.', { err }))
+      return res()
+    } catch (err) {
+      deleteTmpDirectory(tmpDirectory)
+
+      return rej(err)
     }
   })
+
+  function deleteTmpDirectory (directory: string) {
+    remove(directory)
+      .catch(err => logger.error('Cannot delete path on HLS download error.', { err }))
+  }
+
+  async function fetchUniqUrls (playlistUrl: string) {
+    const { body } = await doRequest(playlistUrl)
+
+    if (!body) return []
+
+    const urls = body.split('\n')
+      .filter(line => line.endsWith('.m3u8') || line.endsWith('.mp4'))
+      .map(url => {
+        if (url.startsWith('http://') || url.startsWith('https://')) return url
+
+        return `${dirname(playlistUrl)}/${url}`
+      })
+
+    return uniq(urls)
+  }
 }
 
 // ---------------------------------------------------------------------------
 
 export {
   updateMasterHLSPlaylist,
-  updateSha256Segments,
-  downloadPlaylistSegments
+  updateSha256VODSegments,
+  buildSha256Segment,
+  downloadPlaylistSegments,
+  updateStreamingPlaylistsInfohashesIfNeeded
 }
 
 // ---------------------------------------------------------------------------
+
+function getRangesFromPlaylist (playlistContent: string) {
+  const ranges: { offset: number, length: number }[] = []
+  const lines = playlistContent.split('\n')
+  const regex = /^#EXT-X-BYTERANGE:(\d+)@(\d+)$/
+
+  for (const line of lines) {
+    const captured = regex.exec(line)
+
+    if (captured) {
+      ranges.push({ length: parseInt(captured[1], 10), offset: parseInt(captured[2], 10) })
+    }
+  }
+
+  return ranges
+}