515 lines
16 KiB
TypeScript
515 lines
16 KiB
TypeScript
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import * as chokidar from 'chokidar'
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import { FfmpegCommand } from 'fluent-ffmpeg'
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import { ensureDir, stat } from 'fs-extra'
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import { basename } from 'path'
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import { isTestInstance } from '@server/helpers/core-utils'
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import { getLiveMuxingCommand, getLiveTranscodingCommand } from '@server/helpers/ffmpeg-utils'
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import { computeResolutionsToTranscode, getVideoFileFPS, getVideoFileResolution } from '@server/helpers/ffprobe-utils'
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import { logger } from '@server/helpers/logger'
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import { CONFIG, registerConfigChangedHandler } from '@server/initializers/config'
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import { MEMOIZE_TTL, P2P_MEDIA_LOADER_PEER_VERSION, VIDEO_LIVE, VIEW_LIFETIME, WEBSERVER } from '@server/initializers/constants'
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import { UserModel } from '@server/models/account/user'
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import { VideoModel } from '@server/models/video/video'
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import { VideoFileModel } from '@server/models/video/video-file'
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import { VideoLiveModel } from '@server/models/video/video-live'
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import { VideoStreamingPlaylistModel } from '@server/models/video/video-streaming-playlist'
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import { MStreamingPlaylist, MUserId, MVideoLive, MVideoLiveVideo } from '@server/types/models'
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import { VideoState, VideoStreamingPlaylistType } from '@shared/models'
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import { federateVideoIfNeeded } from './activitypub/videos'
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import { buildSha256Segment } from './hls'
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import { JobQueue } from './job-queue'
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import { PeerTubeSocket } from './peertube-socket'
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import { isAbleToUploadVideo } from './user'
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import { getHLSDirectory } from './video-paths'
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import { availableEncoders } from './video-transcoding-profiles'
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import memoizee = require('memoizee')
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const NodeRtmpServer = require('node-media-server/node_rtmp_server')
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const context = require('node-media-server/node_core_ctx')
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const nodeMediaServerLogger = require('node-media-server/node_core_logger')
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// Disable node media server logs
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nodeMediaServerLogger.setLogType(0)
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const config = {
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rtmp: {
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port: CONFIG.LIVE.RTMP.PORT,
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chunk_size: VIDEO_LIVE.RTMP.CHUNK_SIZE,
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gop_cache: VIDEO_LIVE.RTMP.GOP_CACHE,
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ping: VIDEO_LIVE.RTMP.PING,
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ping_timeout: VIDEO_LIVE.RTMP.PING_TIMEOUT
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},
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transcoding: {
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ffmpeg: 'ffmpeg'
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}
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}
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class LiveManager {
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private static instance: LiveManager
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private readonly transSessions = new Map<string, FfmpegCommand>()
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private readonly videoSessions = new Map<number, string>()
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// Values are Date().getTime()
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private readonly watchersPerVideo = new Map<number, number[]>()
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private readonly segmentsSha256 = new Map<string, Map<string, string>>()
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private readonly livesPerUser = new Map<number, { liveId: number, videoId: number, size: number }[]>()
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private readonly isAbleToUploadVideoWithCache = memoizee((userId: number) => {
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return isAbleToUploadVideo(userId, 1000)
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}, { maxAge: MEMOIZE_TTL.LIVE_ABLE_TO_UPLOAD })
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private rtmpServer: any
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private constructor () {
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}
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init () {
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const events = this.getContext().nodeEvent
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events.on('postPublish', (sessionId: string, streamPath: string) => {
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logger.debug('RTMP received stream', { id: sessionId, streamPath })
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const splittedPath = streamPath.split('/')
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if (splittedPath.length !== 3 || splittedPath[1] !== VIDEO_LIVE.RTMP.BASE_PATH) {
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logger.warn('Live path is incorrect.', { streamPath })
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return this.abortSession(sessionId)
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}
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this.handleSession(sessionId, streamPath, splittedPath[2])
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.catch(err => logger.error('Cannot handle sessions.', { err }))
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})
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events.on('donePublish', sessionId => {
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logger.info('Live session ended.', { sessionId })
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})
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registerConfigChangedHandler(() => {
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if (!this.rtmpServer && CONFIG.LIVE.ENABLED === true) {
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this.run()
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return
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}
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if (this.rtmpServer && CONFIG.LIVE.ENABLED === false) {
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this.stop()
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}
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})
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// Cleanup broken lives, that were terminated by a server restart for example
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this.handleBrokenLives()
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.catch(err => logger.error('Cannot handle broken lives.', { err }))
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setInterval(() => this.updateLiveViews(), VIEW_LIFETIME.LIVE)
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}
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run () {
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logger.info('Running RTMP server on port %d', config.rtmp.port)
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this.rtmpServer = new NodeRtmpServer(config)
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this.rtmpServer.run()
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}
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stop () {
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logger.info('Stopping RTMP server.')
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this.rtmpServer.stop()
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this.rtmpServer = undefined
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}
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isRunning () {
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return !!this.rtmpServer
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}
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getSegmentsSha256 (videoUUID: string) {
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return this.segmentsSha256.get(videoUUID)
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}
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stopSessionOf (videoId: number) {
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const sessionId = this.videoSessions.get(videoId)
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if (!sessionId) return
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this.videoSessions.delete(videoId)
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this.abortSession(sessionId)
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}
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getLiveQuotaUsedByUser (userId: number) {
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const currentLives = this.livesPerUser.get(userId)
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if (!currentLives) return 0
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return currentLives.reduce((sum, obj) => sum + obj.size, 0)
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}
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addViewTo (videoId: number) {
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if (this.videoSessions.has(videoId) === false) return
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let watchers = this.watchersPerVideo.get(videoId)
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if (!watchers) {
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watchers = []
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this.watchersPerVideo.set(videoId, watchers)
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}
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watchers.push(new Date().getTime())
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}
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private getContext () {
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return context
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}
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private abortSession (id: string) {
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const session = this.getContext().sessions.get(id)
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if (session) {
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session.stop()
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this.getContext().sessions.delete(id)
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}
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const transSession = this.transSessions.get(id)
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if (transSession) {
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transSession.kill('SIGINT')
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this.transSessions.delete(id)
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}
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}
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private async handleSession (sessionId: string, streamPath: string, streamKey: string) {
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const videoLive = await VideoLiveModel.loadByStreamKey(streamKey)
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if (!videoLive) {
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logger.warn('Unknown live video with stream key %s.', streamKey)
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return this.abortSession(sessionId)
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}
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const video = videoLive.Video
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if (video.isBlacklisted()) {
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logger.warn('Video is blacklisted. Refusing stream %s.', streamKey)
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return this.abortSession(sessionId)
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}
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this.videoSessions.set(video.id, sessionId)
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const playlistUrl = WEBSERVER.URL + VideoStreamingPlaylistModel.getHlsMasterPlaylistStaticPath(video.uuid)
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const session = this.getContext().sessions.get(sessionId)
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const rtmpUrl = 'rtmp://127.0.0.1:' + config.rtmp.port + streamPath
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const [ resolutionResult, fps ] = await Promise.all([
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getVideoFileResolution(rtmpUrl),
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getVideoFileFPS(rtmpUrl)
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])
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const resolutionsEnabled = CONFIG.LIVE.TRANSCODING.ENABLED
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? computeResolutionsToTranscode(resolutionResult.videoFileResolution, 'live')
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: []
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const allResolutions = resolutionsEnabled.concat([ session.videoHeight ])
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logger.info('Will mux/transcode live video of original resolution %d.', session.videoHeight, { allResolutions })
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const [ videoStreamingPlaylist ] = await VideoStreamingPlaylistModel.upsert({
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videoId: video.id,
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playlistUrl,
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segmentsSha256Url: WEBSERVER.URL + VideoStreamingPlaylistModel.getHlsSha256SegmentsStaticPath(video.uuid, video.isLive),
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p2pMediaLoaderInfohashes: VideoStreamingPlaylistModel.buildP2PMediaLoaderInfoHashes(playlistUrl, allResolutions),
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p2pMediaLoaderPeerVersion: P2P_MEDIA_LOADER_PEER_VERSION,
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type: VideoStreamingPlaylistType.HLS
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}, { returning: true }) as [ MStreamingPlaylist, boolean ]
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return this.runMuxing({
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sessionId,
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videoLive,
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playlist: videoStreamingPlaylist,
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rtmpUrl,
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fps,
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allResolutions
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})
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}
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private async runMuxing (options: {
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sessionId: string
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videoLive: MVideoLiveVideo
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playlist: MStreamingPlaylist
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rtmpUrl: string
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fps: number
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allResolutions: number[]
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}) {
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const { sessionId, videoLive, playlist, allResolutions, fps, rtmpUrl } = options
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const startStreamDateTime = new Date().getTime()
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const user = await UserModel.loadByLiveId(videoLive.id)
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if (!this.livesPerUser.has(user.id)) {
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this.livesPerUser.set(user.id, [])
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}
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const currentUserLive = { liveId: videoLive.id, videoId: videoLive.videoId, size: 0 }
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const livesOfUser = this.livesPerUser.get(user.id)
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livesOfUser.push(currentUserLive)
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for (let i = 0; i < allResolutions.length; i++) {
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const resolution = allResolutions[i]
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VideoFileModel.upsert({
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resolution,
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size: -1,
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extname: '.ts',
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infoHash: null,
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fps,
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videoStreamingPlaylistId: playlist.id
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}).catch(err => {
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logger.error('Cannot create file for live streaming.', { err })
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})
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}
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const outPath = getHLSDirectory(videoLive.Video)
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await ensureDir(outPath)
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const videoUUID = videoLive.Video.uuid
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const deleteSegments = videoLive.saveReplay === false
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const ffmpegExec = CONFIG.LIVE.TRANSCODING.ENABLED
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? await getLiveTranscodingCommand({
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rtmpUrl,
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outPath,
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resolutions: allResolutions,
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fps,
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deleteSegments,
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availableEncoders,
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profile: 'default'
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})
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: getLiveMuxingCommand(rtmpUrl, outPath, deleteSegments)
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logger.info('Running live muxing/transcoding for %s.', videoUUID)
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this.transSessions.set(sessionId, ffmpegExec)
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const tsWatcher = chokidar.watch(outPath + '/*.ts')
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const segmentsToProcessPerPlaylist: { [playlistId: string]: string[] } = {}
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const playlistIdMatcher = /^([\d+])-/
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const processHashSegments = (segmentsToProcess: string[]) => {
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// Add sha hash of previous segments, because ffmpeg should have finished generating them
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for (const previousSegment of segmentsToProcess) {
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this.addSegmentSha(videoUUID, previousSegment)
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.catch(err => logger.error('Cannot add sha segment of video %s -> %s.', videoUUID, previousSegment, { err }))
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}
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}
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const addHandler = segmentPath => {
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logger.debug('Live add handler of %s.', segmentPath)
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const playlistId = basename(segmentPath).match(playlistIdMatcher)[0]
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const segmentsToProcess = segmentsToProcessPerPlaylist[playlistId] || []
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processHashSegments(segmentsToProcess)
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segmentsToProcessPerPlaylist[playlistId] = [ segmentPath ]
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// Duration constraint check
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if (this.isDurationConstraintValid(startStreamDateTime) !== true) {
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logger.info('Stopping session of %s: max duration exceeded.', videoUUID)
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this.stopSessionOf(videoLive.videoId)
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}
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// Check user quota if the user enabled replay saving
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if (videoLive.saveReplay === true) {
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stat(segmentPath)
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.then(segmentStat => {
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currentUserLive.size += segmentStat.size
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})
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.then(() => this.isQuotaConstraintValid(user, videoLive))
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.then(quotaValid => {
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if (quotaValid !== true) {
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logger.info('Stopping session of %s: user quota exceeded.', videoUUID)
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this.stopSessionOf(videoLive.videoId)
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}
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})
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.catch(err => logger.error('Cannot stat %s or check quota of %d.', segmentPath, user.id, { err }))
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}
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}
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const deleteHandler = segmentPath => this.removeSegmentSha(videoUUID, segmentPath)
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tsWatcher.on('add', p => addHandler(p))
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tsWatcher.on('unlink', p => deleteHandler(p))
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const masterWatcher = chokidar.watch(outPath + '/master.m3u8')
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masterWatcher.on('add', async () => {
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try {
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const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoLive.videoId)
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video.state = VideoState.PUBLISHED
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await video.save()
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videoLive.Video = video
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setTimeout(() => {
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federateVideoIfNeeded(video, false)
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.catch(err => logger.error('Cannot federate live video %s.', video.url, { err }))
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PeerTubeSocket.Instance.sendVideoLiveNewState(video)
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}, VIDEO_LIVE.SEGMENT_TIME_SECONDS * 1000 * VIDEO_LIVE.EDGE_LIVE_DELAY_SEGMENTS_NOTIFICATION)
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} catch (err) {
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logger.error('Cannot save/federate live video %d.', videoLive.videoId, { err })
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} finally {
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masterWatcher.close()
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.catch(err => logger.error('Cannot close master watcher of %s.', outPath, { err }))
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}
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})
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const onFFmpegEnded = () => {
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logger.info('RTMP transmuxing for video %s ended. Scheduling cleanup', rtmpUrl)
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this.transSessions.delete(sessionId)
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this.watchersPerVideo.delete(videoLive.videoId)
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setTimeout(() => {
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// Wait latest segments generation, and close watchers
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Promise.all([ tsWatcher.close(), masterWatcher.close() ])
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.then(() => {
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// Process remaining segments hash
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for (const key of Object.keys(segmentsToProcessPerPlaylist)) {
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processHashSegments(segmentsToProcessPerPlaylist[key])
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}
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})
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.catch(err => logger.error('Cannot close watchers of %s or process remaining hash segments.', outPath, { err }))
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this.onEndTransmuxing(videoLive.Video.id)
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.catch(err => logger.error('Error in closed transmuxing.', { err }))
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}, 1000)
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}
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ffmpegExec.on('error', (err, stdout, stderr) => {
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onFFmpegEnded()
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// Don't care that we killed the ffmpeg process
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if (err?.message?.includes('Exiting normally')) return
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logger.error('Live transcoding error.', { err, stdout, stderr })
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this.abortSession(sessionId)
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})
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ffmpegExec.on('end', () => onFFmpegEnded())
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ffmpegExec.run()
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}
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private async onEndTransmuxing (videoId: number, cleanupNow = false) {
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try {
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const fullVideo = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoId)
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if (!fullVideo) return
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JobQueue.Instance.createJob({
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type: 'video-live-ending',
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payload: {
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videoId: fullVideo.id
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}
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}, { delay: cleanupNow ? 0 : VIDEO_LIVE.CLEANUP_DELAY })
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fullVideo.state = VideoState.LIVE_ENDED
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await fullVideo.save()
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PeerTubeSocket.Instance.sendVideoLiveNewState(fullVideo)
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await federateVideoIfNeeded(fullVideo, false)
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} catch (err) {
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logger.error('Cannot save/federate new video state of live streaming.', { err })
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}
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}
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private async addSegmentSha (videoUUID: string, segmentPath: string) {
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const segmentName = basename(segmentPath)
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logger.debug('Adding live sha segment %s.', segmentPath)
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const shaResult = await buildSha256Segment(segmentPath)
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if (!this.segmentsSha256.has(videoUUID)) {
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this.segmentsSha256.set(videoUUID, new Map())
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}
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const filesMap = this.segmentsSha256.get(videoUUID)
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filesMap.set(segmentName, shaResult)
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}
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private removeSegmentSha (videoUUID: string, segmentPath: string) {
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const segmentName = basename(segmentPath)
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logger.debug('Removing live sha segment %s.', segmentPath)
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const filesMap = this.segmentsSha256.get(videoUUID)
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if (!filesMap) {
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logger.warn('Unknown files map to remove sha for %s.', videoUUID)
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return
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}
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if (!filesMap.has(segmentName)) {
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logger.warn('Unknown segment in files map for video %s and segment %s.', videoUUID, segmentPath)
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return
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}
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filesMap.delete(segmentName)
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}
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private isDurationConstraintValid (streamingStartTime: number) {
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const maxDuration = CONFIG.LIVE.MAX_DURATION
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// No limit
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if (maxDuration === null) return true
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const now = new Date().getTime()
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const max = streamingStartTime + maxDuration
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return now <= max
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}
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private async isQuotaConstraintValid (user: MUserId, live: MVideoLive) {
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if (live.saveReplay !== true) return true
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return this.isAbleToUploadVideoWithCache(user.id)
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}
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private async updateLiveViews () {
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if (!this.isRunning()) return
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if (!isTestInstance()) logger.info('Updating live video views.')
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for (const videoId of this.watchersPerVideo.keys()) {
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const notBefore = new Date().getTime() - VIEW_LIFETIME.LIVE
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const watchers = this.watchersPerVideo.get(videoId)
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const numWatchers = watchers.length
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const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoId)
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video.views = numWatchers
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await video.save()
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await federateVideoIfNeeded(video, false)
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// Only keep not expired watchers
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const newWatchers = watchers.filter(w => w > notBefore)
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this.watchersPerVideo.set(videoId, newWatchers)
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logger.debug('New live video views for %s is %d.', video.url, numWatchers)
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}
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}
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private async handleBrokenLives () {
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const videoIds = await VideoModel.listPublishedLiveIds()
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for (const id of videoIds) {
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await this.onEndTransmuxing(id, true)
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}
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}
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static get Instance () {
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return this.instance || (this.instance = new this())
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}
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}
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// ---------------------------------------------------------------------------
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export {
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LiveManager
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}
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