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Commit | Line | Data |
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0305db28 | 1 | import { close, ensureDir, move, open, outputJSON, read, readFile, remove, stat, writeFile } from 'fs-extra' |
daf6e480 | 2 | import { flatten, uniq } from 'lodash' |
1bb4c9ab | 3 | import PQueue from 'p-queue' |
daf6e480 | 4 | import { basename, dirname, join } from 'path' |
1bb4c9ab | 5 | import { MStreamingPlaylist, MStreamingPlaylistFilesVideo, MVideo } from '@server/types/models' |
f304a158 | 6 | import { sha256 } from '@shared/extra-utils' |
a2caee9f | 7 | import { VideoStorage } from '@shared/models' |
c729caf6 | 8 | import { getAudioStreamCodec, getVideoStreamCodec, getVideoStreamDimensionsInfo } from '../helpers/ffmpeg' |
09209296 | 9 | import { logger } from '../helpers/logger' |
4c280004 C |
10 | import { doRequest, doRequestAndSaveToFile } from '../helpers/requests' |
11 | import { generateRandomString } from '../helpers/utils' | |
6dd9de95 | 12 | import { CONFIG } from '../initializers/config' |
7b0c61e7 | 13 | import { P2P_MEDIA_LOADER_PEER_VERSION, REQUEST_TIMEOUTS } from '../initializers/constants' |
74dc3bca | 14 | import { sequelizeTypescript } from '../initializers/database' |
daf6e480 C |
15 | import { VideoFileModel } from '../models/video/video-file' |
16 | import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist' | |
a2caee9f | 17 | import { storeHLSFile } from './object-storage' |
1bb4c9ab | 18 | import { generateHLSMasterPlaylistFilename, generateHlsSha256SegmentsFilename, getHlsResolutionPlaylistFilename } from './paths' |
0305db28 | 19 | import { VideoPathManager } from './video-path-manager' |
ae9bbed4 C |
20 | |
21 | async function updateStreamingPlaylistsInfohashesIfNeeded () { | |
22 | const playlistsToUpdate = await VideoStreamingPlaylistModel.listByIncorrectPeerVersion() | |
23 | ||
24 | // Use separate SQL queries, because we could have many videos to update | |
25 | for (const playlist of playlistsToUpdate) { | |
26 | await sequelizeTypescript.transaction(async t => { | |
27 | const videoFiles = await VideoFileModel.listByStreamingPlaylist(playlist.id, t) | |
28 | ||
764b1a14 | 29 | playlist.assignP2PMediaLoaderInfoHashes(playlist.Video, videoFiles) |
0e9c48c2 | 30 | playlist.p2pMediaLoaderPeerVersion = P2P_MEDIA_LOADER_PEER_VERSION |
764b1a14 | 31 | |
ae9bbed4 C |
32 | await playlist.save({ transaction: t }) |
33 | }) | |
34 | } | |
35 | } | |
09209296 | 36 | |
1bb4c9ab | 37 | async function updatePlaylistAfterFileChange (video: MVideo, playlist: MStreamingPlaylist) { |
51335c72 C |
38 | try { |
39 | let playlistWithFiles = await updateMasterHLSPlaylist(video, playlist) | |
40 | playlistWithFiles = await updateSha256VODSegments(video, playlist) | |
41 | ||
42 | // Refresh playlist, operations can take some time | |
43 | playlistWithFiles = await VideoStreamingPlaylistModel.loadWithVideoAndFiles(playlist.id) | |
44 | playlistWithFiles.assignP2PMediaLoaderInfoHashes(video, playlistWithFiles.VideoFiles) | |
45 | await playlistWithFiles.save() | |
46 | ||
47 | video.setHLSPlaylist(playlistWithFiles) | |
48 | } catch (err) { | |
49 | logger.info('Cannot update playlist after file change. Maybe due to concurrent transcoding', { err }) | |
50 | } | |
1bb4c9ab | 51 | } |
09209296 | 52 | |
1bb4c9ab | 53 | // --------------------------------------------------------------------------- |
09209296 | 54 | |
1bb4c9ab C |
55 | // Avoid concurrency issues when updating streaming playlist files |
56 | const playlistFilesQueue = new PQueue({ concurrency: 1 }) | |
09209296 | 57 | |
1bb4c9ab C |
58 | function updateMasterHLSPlaylist (video: MVideo, playlistArg: MStreamingPlaylist): Promise<MStreamingPlaylistFilesVideo> { |
59 | return playlistFilesQueue.add(async () => { | |
60 | const playlist = await VideoStreamingPlaylistModel.loadWithVideoAndFiles(playlistArg.id) | |
d7b1c7b4 | 61 | |
1bb4c9ab | 62 | const masterPlaylists: string[] = [ '#EXTM3U', '#EXT-X-VERSION:3' ] |
52201311 | 63 | |
1bb4c9ab C |
64 | for (const file of playlist.VideoFiles) { |
65 | const playlistFilename = getHlsResolutionPlaylistFilename(file.filename) | |
66 | ||
67 | await VideoPathManager.Instance.makeAvailableVideoFile(file.withVideoOrPlaylist(playlist), async videoFilePath => { | |
68 | const size = await getVideoStreamDimensionsInfo(videoFilePath) | |
69 | ||
70 | const bandwidth = 'BANDWIDTH=' + video.getBandwidthBits(file) | |
71 | const resolution = `RESOLUTION=${size?.width || 0}x${size?.height || 0}` | |
72 | ||
73 | let line = `#EXT-X-STREAM-INF:${bandwidth},${resolution}` | |
74 | if (file.fps) line += ',FRAME-RATE=' + file.fps | |
75 | ||
76 | const codecs = await Promise.all([ | |
77 | getVideoStreamCodec(videoFilePath), | |
78 | getAudioStreamCodec(videoFilePath) | |
79 | ]) | |
09209296 | 80 | |
1bb4c9ab C |
81 | line += `,CODECS="${codecs.filter(c => !!c).join(',')}"` |
82 | ||
83 | masterPlaylists.push(line) | |
84 | masterPlaylists.push(playlistFilename) | |
85 | }) | |
86 | } | |
87 | ||
88 | if (playlist.playlistFilename) { | |
89 | await video.removeStreamingPlaylistFile(playlist, playlist.playlistFilename) | |
90 | } | |
91 | playlist.playlistFilename = generateHLSMasterPlaylistFilename(video.isLive) | |
92 | ||
93 | const masterPlaylistPath = VideoPathManager.Instance.getFSHLSOutputPath(video, playlist.playlistFilename) | |
a2caee9f C |
94 | await writeFile(masterPlaylistPath, masterPlaylists.join('\n') + '\n') |
95 | ||
96 | if (playlist.storage === VideoStorage.OBJECT_STORAGE) { | |
1bb4c9ab C |
97 | playlist.playlistUrl = await storeHLSFile(playlist, playlist.playlistFilename) |
98 | await remove(masterPlaylistPath) | |
a2caee9f | 99 | } |
1bb4c9ab C |
100 | |
101 | return playlist.save() | |
0305db28 | 102 | }) |
09209296 C |
103 | } |
104 | ||
1bb4c9ab C |
105 | // --------------------------------------------------------------------------- |
106 | ||
b37d80e3 | 107 | function updateSha256VODSegments (video: MVideo, playlistArg: MStreamingPlaylist): Promise<MStreamingPlaylistFilesVideo> { |
1bb4c9ab C |
108 | return playlistFilesQueue.add(async () => { |
109 | const json: { [filename: string]: { [range: string]: string } } = {} | |
4c280004 | 110 | |
1bb4c9ab | 111 | const playlist = await VideoStreamingPlaylistModel.loadWithVideoAndFiles(playlistArg.id) |
4c280004 | 112 | |
1bb4c9ab C |
113 | // For all the resolutions available for this video |
114 | for (const file of playlist.VideoFiles) { | |
115 | const rangeHashes: { [range: string]: string } = {} | |
116 | const fileWithPlaylist = file.withVideoOrPlaylist(playlist) | |
09209296 | 117 | |
1bb4c9ab | 118 | await VideoPathManager.Instance.makeAvailableVideoFile(fileWithPlaylist, videoPath => { |
09209296 | 119 | |
1bb4c9ab C |
120 | return VideoPathManager.Instance.makeAvailableResolutionPlaylistFile(fileWithPlaylist, async resolutionPlaylistPath => { |
121 | const playlistContent = await readFile(resolutionPlaylistPath) | |
122 | const ranges = getRangesFromPlaylist(playlistContent.toString()) | |
09209296 | 123 | |
1bb4c9ab C |
124 | const fd = await open(videoPath, 'r') |
125 | for (const range of ranges) { | |
126 | const buf = Buffer.alloc(range.length) | |
127 | await read(fd, buf, 0, range.length, range.offset) | |
4c280004 | 128 | |
1bb4c9ab C |
129 | rangeHashes[`${range.offset}-${range.offset + range.length - 1}`] = sha256(buf) |
130 | } | |
131 | await close(fd) | |
132 | ||
133 | const videoFilename = file.filename | |
134 | json[videoFilename] = rangeHashes | |
135 | }) | |
0305db28 | 136 | }) |
1bb4c9ab | 137 | } |
09209296 | 138 | |
1bb4c9ab C |
139 | if (playlist.segmentsSha256Filename) { |
140 | await video.removeStreamingPlaylistFile(playlist, playlist.segmentsSha256Filename) | |
141 | } | |
142 | playlist.segmentsSha256Filename = generateHlsSha256SegmentsFilename(video.isLive) | |
a2caee9f | 143 | |
1bb4c9ab C |
144 | const outputPath = VideoPathManager.Instance.getFSHLSOutputPath(video, playlist.segmentsSha256Filename) |
145 | await outputJSON(outputPath, json) | |
146 | ||
147 | if (playlist.storage === VideoStorage.OBJECT_STORAGE) { | |
148 | playlist.segmentsSha256Url = await storeHLSFile(playlist, playlist.segmentsSha256Filename) | |
149 | await remove(outputPath) | |
150 | } | |
151 | ||
152 | return playlist.save() | |
153 | }) | |
09209296 C |
154 | } |
155 | ||
1bb4c9ab C |
156 | // --------------------------------------------------------------------------- |
157 | ||
c6c0fa6c C |
158 | async function buildSha256Segment (segmentPath: string) { |
159 | const buf = await readFile(segmentPath) | |
160 | return sha256(buf) | |
161 | } | |
162 | ||
18998c45 | 163 | function downloadPlaylistSegments (playlistUrl: string, destinationDir: string, timeout: number, bodyKBLimit: number) { |
4c280004 | 164 | let timer |
18998c45 | 165 | let remainingBodyKBLimit = bodyKBLimit |
09209296 | 166 | |
4c280004 | 167 | logger.info('Importing HLS playlist %s', playlistUrl) |
09209296 | 168 | |
ba5a8d89 | 169 | return new Promise<void>(async (res, rej) => { |
4c280004 | 170 | const tmpDirectory = join(CONFIG.STORAGE.TMP_DIR, await generateRandomString(10)) |
09209296 | 171 | |
4c280004 | 172 | await ensureDir(tmpDirectory) |
09209296 C |
173 | |
174 | timer = setTimeout(() => { | |
4c280004 | 175 | deleteTmpDirectory(tmpDirectory) |
09209296 C |
176 | |
177 | return rej(new Error('HLS download timeout.')) | |
178 | }, timeout) | |
179 | ||
4c280004 C |
180 | try { |
181 | // Fetch master playlist | |
182 | const subPlaylistUrls = await fetchUniqUrls(playlistUrl) | |
183 | ||
184 | const subRequests = subPlaylistUrls.map(u => fetchUniqUrls(u)) | |
185 | const fileUrls = uniq(flatten(await Promise.all(subRequests))) | |
186 | ||
187 | logger.debug('Will download %d HLS files.', fileUrls.length, { fileUrls }) | |
188 | ||
189 | for (const fileUrl of fileUrls) { | |
190 | const destPath = join(tmpDirectory, basename(fileUrl)) | |
191 | ||
a5ee023c | 192 | await doRequestAndSaveToFile(fileUrl, destPath, { bodyKBLimit: remainingBodyKBLimit, timeout: REQUEST_TIMEOUTS.REDUNDANCY }) |
18998c45 C |
193 | |
194 | const { size } = await stat(destPath) | |
195 | remainingBodyKBLimit -= (size / 1000) | |
196 | ||
197 | logger.debug('Downloaded HLS playlist file %s with %d kB remained limit.', fileUrl, Math.floor(remainingBodyKBLimit)) | |
4c280004 C |
198 | } |
199 | ||
200 | clearTimeout(timer) | |
201 | ||
202 | await move(tmpDirectory, destinationDir, { overwrite: true }) | |
203 | ||
204 | return res() | |
205 | } catch (err) { | |
206 | deleteTmpDirectory(tmpDirectory) | |
207 | ||
208 | return rej(err) | |
09209296 C |
209 | } |
210 | }) | |
4c280004 C |
211 | |
212 | function deleteTmpDirectory (directory: string) { | |
213 | remove(directory) | |
214 | .catch(err => logger.error('Cannot delete path on HLS download error.', { err })) | |
215 | } | |
216 | ||
217 | async function fetchUniqUrls (playlistUrl: string) { | |
db4b15f2 | 218 | const { body } = await doRequest(playlistUrl) |
4c280004 C |
219 | |
220 | if (!body) return [] | |
221 | ||
222 | const urls = body.split('\n') | |
223 | .filter(line => line.endsWith('.m3u8') || line.endsWith('.mp4')) | |
224 | .map(url => { | |
225 | if (url.startsWith('http://') || url.startsWith('https://')) return url | |
226 | ||
227 | return `${dirname(playlistUrl)}/${url}` | |
228 | }) | |
229 | ||
230 | return uniq(urls) | |
231 | } | |
09209296 C |
232 | } |
233 | ||
234 | // --------------------------------------------------------------------------- | |
235 | ||
236 | export { | |
237 | updateMasterHLSPlaylist, | |
c6c0fa6c C |
238 | updateSha256VODSegments, |
239 | buildSha256Segment, | |
ae9bbed4 | 240 | downloadPlaylistSegments, |
1bb4c9ab C |
241 | updateStreamingPlaylistsInfohashesIfNeeded, |
242 | updatePlaylistAfterFileChange | |
09209296 C |
243 | } |
244 | ||
245 | // --------------------------------------------------------------------------- | |
b5b68755 C |
246 | |
247 | function getRangesFromPlaylist (playlistContent: string) { | |
248 | const ranges: { offset: number, length: number }[] = [] | |
249 | const lines = playlistContent.split('\n') | |
250 | const regex = /^#EXT-X-BYTERANGE:(\d+)@(\d+)$/ | |
251 | ||
252 | for (const line of lines) { | |
253 | const captured = regex.exec(line) | |
254 | ||
255 | if (captured) { | |
256 | ranges.push({ length: parseInt(captured[1], 10), offset: parseInt(captured[2], 10) }) | |
257 | } | |
258 | } | |
259 | ||
260 | return ranges | |
261 | } |