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c6c0fa6c C |
1 | |
2 | import { AsyncQueue, queue } from 'async' | |
3 | import * as chokidar from 'chokidar' | |
4 | import { FfmpegCommand } from 'fluent-ffmpeg' | |
5 | import { ensureDir, readdir, remove } from 'fs-extra' | |
6 | import { basename, join } from 'path' | |
7 | import { computeResolutionsToTranscode, runLiveMuxing, runLiveTranscoding } from '@server/helpers/ffmpeg-utils' | |
8 | import { logger } from '@server/helpers/logger' | |
9 | import { CONFIG, registerConfigChangedHandler } from '@server/initializers/config' | |
10 | import { P2P_MEDIA_LOADER_PEER_VERSION, VIDEO_LIVE, WEBSERVER } from '@server/initializers/constants' | |
11 | import { VideoFileModel } from '@server/models/video/video-file' | |
12 | import { VideoLiveModel } from '@server/models/video/video-live' | |
13 | import { VideoStreamingPlaylistModel } from '@server/models/video/video-streaming-playlist' | |
14 | import { MStreamingPlaylist, MVideo, MVideoLiveVideo } from '@server/types/models' | |
15 | import { VideoState, VideoStreamingPlaylistType } from '@shared/models' | |
16 | import { buildSha256Segment } from './hls' | |
17 | import { getHLSDirectory } from './video-paths' | |
18 | ||
19 | const NodeRtmpServer = require('node-media-server/node_rtmp_server') | |
20 | const context = require('node-media-server/node_core_ctx') | |
21 | const nodeMediaServerLogger = require('node-media-server/node_core_logger') | |
22 | ||
23 | // Disable node media server logs | |
24 | nodeMediaServerLogger.setLogType(0) | |
25 | ||
26 | const config = { | |
27 | rtmp: { | |
28 | port: CONFIG.LIVE.RTMP.PORT, | |
29 | chunk_size: VIDEO_LIVE.RTMP.CHUNK_SIZE, | |
30 | gop_cache: VIDEO_LIVE.RTMP.GOP_CACHE, | |
31 | ping: VIDEO_LIVE.RTMP.PING, | |
32 | ping_timeout: VIDEO_LIVE.RTMP.PING_TIMEOUT | |
33 | }, | |
34 | transcoding: { | |
35 | ffmpeg: 'ffmpeg' | |
36 | } | |
37 | } | |
38 | ||
39 | type SegmentSha256QueueParam = { | |
40 | operation: 'update' | 'delete' | |
41 | videoUUID: string | |
42 | segmentPath: string | |
43 | } | |
44 | ||
45 | class LiveManager { | |
46 | ||
47 | private static instance: LiveManager | |
48 | ||
49 | private readonly transSessions = new Map<string, FfmpegCommand>() | |
50 | private readonly segmentsSha256 = new Map<string, Map<string, string>>() | |
51 | ||
52 | private segmentsSha256Queue: AsyncQueue<SegmentSha256QueueParam> | |
53 | private rtmpServer: any | |
54 | ||
55 | private constructor () { | |
56 | } | |
57 | ||
58 | init () { | |
59 | this.getContext().nodeEvent.on('postPublish', (sessionId: string, streamPath: string) => { | |
60 | logger.debug('RTMP received stream', { id: sessionId, streamPath }) | |
61 | ||
62 | const splittedPath = streamPath.split('/') | |
63 | if (splittedPath.length !== 3 || splittedPath[1] !== VIDEO_LIVE.RTMP.BASE_PATH) { | |
64 | logger.warn('Live path is incorrect.', { streamPath }) | |
65 | return this.abortSession(sessionId) | |
66 | } | |
67 | ||
68 | this.handleSession(sessionId, streamPath, splittedPath[2]) | |
69 | .catch(err => logger.error('Cannot handle sessions.', { err })) | |
70 | }) | |
71 | ||
72 | this.getContext().nodeEvent.on('donePublish', sessionId => { | |
73 | this.abortSession(sessionId) | |
74 | }) | |
75 | ||
76 | this.segmentsSha256Queue = queue<SegmentSha256QueueParam, Error>((options, cb) => { | |
77 | const promise = options.operation === 'update' | |
78 | ? this.addSegmentSha(options) | |
79 | : Promise.resolve(this.removeSegmentSha(options)) | |
80 | ||
81 | promise.then(() => cb()) | |
82 | .catch(err => { | |
83 | logger.error('Cannot update/remove sha segment %s.', options.segmentPath, { err }) | |
84 | cb() | |
85 | }) | |
86 | }) | |
87 | ||
88 | registerConfigChangedHandler(() => { | |
89 | if (!this.rtmpServer && CONFIG.LIVE.ENABLED === true) { | |
90 | this.run() | |
91 | return | |
92 | } | |
93 | ||
94 | if (this.rtmpServer && CONFIG.LIVE.ENABLED === false) { | |
95 | this.stop() | |
96 | } | |
97 | }) | |
98 | } | |
99 | ||
100 | run () { | |
101 | logger.info('Running RTMP server.') | |
102 | ||
103 | this.rtmpServer = new NodeRtmpServer(config) | |
104 | this.rtmpServer.run() | |
105 | } | |
106 | ||
107 | stop () { | |
108 | logger.info('Stopping RTMP server.') | |
109 | ||
110 | this.rtmpServer.stop() | |
111 | this.rtmpServer = undefined | |
112 | } | |
113 | ||
114 | getSegmentsSha256 (videoUUID: string) { | |
115 | return this.segmentsSha256.get(videoUUID) | |
116 | } | |
117 | ||
118 | private getContext () { | |
119 | return context | |
120 | } | |
121 | ||
122 | private abortSession (id: string) { | |
123 | const session = this.getContext().sessions.get(id) | |
124 | if (session) session.stop() | |
125 | ||
126 | const transSession = this.transSessions.get(id) | |
127 | if (transSession) transSession.kill('SIGKILL') | |
128 | } | |
129 | ||
130 | private async handleSession (sessionId: string, streamPath: string, streamKey: string) { | |
131 | const videoLive = await VideoLiveModel.loadByStreamKey(streamKey) | |
132 | if (!videoLive) { | |
133 | logger.warn('Unknown live video with stream key %s.', streamKey) | |
134 | return this.abortSession(sessionId) | |
135 | } | |
136 | ||
137 | const video = videoLive.Video | |
138 | const playlistUrl = WEBSERVER.URL + VideoStreamingPlaylistModel.getHlsMasterPlaylistStaticPath(video.uuid) | |
139 | ||
140 | const session = this.getContext().sessions.get(sessionId) | |
141 | const resolutionsEnabled = CONFIG.LIVE.TRANSCODING.ENABLED | |
142 | ? computeResolutionsToTranscode(session.videoHeight, 'live') | |
143 | : [] | |
144 | ||
145 | logger.info('Will mux/transcode live video of original resolution %d.', session.videoHeight, { resolutionsEnabled }) | |
146 | ||
147 | const [ videoStreamingPlaylist ] = await VideoStreamingPlaylistModel.upsert({ | |
148 | videoId: video.id, | |
149 | playlistUrl, | |
150 | segmentsSha256Url: WEBSERVER.URL + VideoStreamingPlaylistModel.getHlsSha256SegmentsStaticPath(video.uuid, video.isLive), | |
151 | p2pMediaLoaderInfohashes: VideoStreamingPlaylistModel.buildP2PMediaLoaderInfoHashes(playlistUrl, resolutionsEnabled), | |
152 | p2pMediaLoaderPeerVersion: P2P_MEDIA_LOADER_PEER_VERSION, | |
153 | ||
154 | type: VideoStreamingPlaylistType.HLS | |
155 | }, { returning: true }) as [ MStreamingPlaylist, boolean ] | |
156 | ||
157 | video.state = VideoState.PUBLISHED | |
158 | await video.save() | |
159 | ||
160 | // FIXME: federation? | |
161 | ||
162 | return this.runMuxing({ | |
163 | sessionId, | |
164 | videoLive, | |
165 | playlist: videoStreamingPlaylist, | |
166 | streamPath, | |
167 | originalResolution: session.videoHeight, | |
168 | resolutionsEnabled | |
169 | }) | |
170 | } | |
171 | ||
172 | private async runMuxing (options: { | |
173 | sessionId: string | |
174 | videoLive: MVideoLiveVideo | |
175 | playlist: MStreamingPlaylist | |
176 | streamPath: string | |
177 | resolutionsEnabled: number[] | |
178 | originalResolution: number | |
179 | }) { | |
180 | const { sessionId, videoLive, playlist, streamPath, resolutionsEnabled, originalResolution } = options | |
181 | const allResolutions = resolutionsEnabled.concat([ originalResolution ]) | |
182 | ||
183 | for (let i = 0; i < allResolutions.length; i++) { | |
184 | const resolution = allResolutions[i] | |
185 | ||
186 | VideoFileModel.upsert({ | |
187 | resolution, | |
188 | size: -1, | |
189 | extname: '.ts', | |
190 | infoHash: null, | |
191 | fps: -1, | |
192 | videoStreamingPlaylistId: playlist.id | |
193 | }).catch(err => { | |
194 | logger.error('Cannot create file for live streaming.', { err }) | |
195 | }) | |
196 | } | |
197 | ||
198 | const outPath = getHLSDirectory(videoLive.Video) | |
199 | await ensureDir(outPath) | |
200 | ||
201 | const rtmpUrl = 'rtmp://127.0.0.1:' + config.rtmp.port + streamPath | |
202 | const ffmpegExec = CONFIG.LIVE.TRANSCODING.ENABLED | |
203 | ? runLiveTranscoding(rtmpUrl, outPath, allResolutions) | |
204 | : runLiveMuxing(rtmpUrl, outPath) | |
205 | ||
206 | logger.info('Running live muxing/transcoding.') | |
207 | ||
208 | this.transSessions.set(sessionId, ffmpegExec) | |
209 | ||
210 | const onFFmpegEnded = () => { | |
211 | watcher.close() | |
212 | .catch(err => logger.error('Cannot close watcher of %s.', outPath, { err })) | |
213 | ||
214 | this.onEndTransmuxing(videoLive.Video, playlist, streamPath, outPath) | |
215 | .catch(err => logger.error('Error in closed transmuxing.', { err })) | |
216 | } | |
217 | ||
218 | ffmpegExec.on('error', (err, stdout, stderr) => { | |
219 | onFFmpegEnded() | |
220 | ||
221 | // Don't care that we killed the ffmpeg process | |
222 | if (err?.message?.includes('SIGKILL')) return | |
223 | ||
224 | logger.error('Live transcoding error.', { err, stdout, stderr }) | |
225 | }) | |
226 | ||
227 | ffmpegExec.on('end', () => onFFmpegEnded()) | |
228 | ||
229 | const videoUUID = videoLive.Video.uuid | |
230 | const watcher = chokidar.watch(outPath + '/*.ts') | |
231 | ||
232 | const updateHandler = segmentPath => this.segmentsSha256Queue.push({ operation: 'update', segmentPath, videoUUID }) | |
233 | const deleteHandler = segmentPath => this.segmentsSha256Queue.push({ operation: 'delete', segmentPath, videoUUID }) | |
234 | ||
235 | watcher.on('add', p => updateHandler(p)) | |
236 | watcher.on('change', p => updateHandler(p)) | |
237 | watcher.on('unlink', p => deleteHandler(p)) | |
238 | } | |
239 | ||
240 | private async onEndTransmuxing (video: MVideo, playlist: MStreamingPlaylist, streamPath: string, outPath: string) { | |
241 | logger.info('RTMP transmuxing for %s ended.', streamPath) | |
242 | ||
243 | const files = await readdir(outPath) | |
244 | ||
245 | for (const filename of files) { | |
246 | if ( | |
247 | filename.endsWith('.ts') || | |
248 | filename.endsWith('.m3u8') || | |
249 | filename.endsWith('.mpd') || | |
250 | filename.endsWith('.m4s') || | |
251 | filename.endsWith('.tmp') | |
252 | ) { | |
253 | const p = join(outPath, filename) | |
254 | ||
255 | remove(p) | |
256 | .catch(err => logger.error('Cannot remove %s.', p, { err })) | |
257 | } | |
258 | } | |
259 | ||
260 | playlist.destroy() | |
261 | .catch(err => logger.error('Cannot remove live streaming playlist.', { err })) | |
262 | ||
263 | video.state = VideoState.LIVE_ENDED | |
264 | video.save() | |
265 | .catch(err => logger.error('Cannot save new video state of live streaming.', { err })) | |
266 | } | |
267 | ||
268 | private async addSegmentSha (options: SegmentSha256QueueParam) { | |
269 | const segmentName = basename(options.segmentPath) | |
270 | logger.debug('Updating live sha segment %s.', options.segmentPath) | |
271 | ||
272 | const shaResult = await buildSha256Segment(options.segmentPath) | |
273 | ||
274 | if (!this.segmentsSha256.has(options.videoUUID)) { | |
275 | this.segmentsSha256.set(options.videoUUID, new Map()) | |
276 | } | |
277 | ||
278 | const filesMap = this.segmentsSha256.get(options.videoUUID) | |
279 | filesMap.set(segmentName, shaResult) | |
280 | } | |
281 | ||
282 | private removeSegmentSha (options: SegmentSha256QueueParam) { | |
283 | const segmentName = basename(options.segmentPath) | |
284 | ||
285 | logger.debug('Removing live sha segment %s.', options.segmentPath) | |
286 | ||
287 | const filesMap = this.segmentsSha256.get(options.videoUUID) | |
288 | if (!filesMap) { | |
289 | logger.warn('Unknown files map to remove sha for %s.', options.videoUUID) | |
290 | return | |
291 | } | |
292 | ||
293 | if (!filesMap.has(segmentName)) { | |
294 | logger.warn('Unknown segment in files map for video %s and segment %s.', options.videoUUID, options.segmentPath) | |
295 | return | |
296 | } | |
297 | ||
298 | filesMap.delete(segmentName) | |
299 | } | |
300 | ||
301 | static get Instance () { | |
302 | return this.instance || (this.instance = new this()) | |
303 | } | |
304 | } | |
305 | ||
306 | // --------------------------------------------------------------------------- | |
307 | ||
308 | export { | |
309 | LiveManager | |
310 | } |