import { readdir, readFile } from 'fs-extra'
import { createServer, Server } from 'net'
import { join } from 'path'
import { createServer as createServerTLS, Server as ServerTLS } from 'tls'
import {
computeLowerResolutionsToTranscode,
ffprobePromise,
getLiveSegmentTime,
getVideoStreamBitrate,
getVideoStreamDimensionsInfo,
getVideoStreamFPS
} from '@server/helpers/ffmpeg'
import { logger, loggerTagsFactory } from '@server/helpers/logger'
import { CONFIG, registerConfigChangedHandler } from '@server/initializers/config'
import { P2P_MEDIA_LOADER_PEER_VERSION, VIDEO_LIVE } from '@server/initializers/constants'
import { UserModel } from '@server/models/user/user'
import { VideoModel } from '@server/models/video/video'
import { VideoLiveModel } from '@server/models/video/video-live'
import { VideoStreamingPlaylistModel } from '@server/models/video/video-streaming-playlist'
import { MStreamingPlaylistVideo, MVideo, MVideoLiveVideo } from '@server/types/models'
import { wait } from '@shared/core-utils'
import { VideoState, VideoStreamingPlaylistType } from '@shared/models'
import { federateVideoIfNeeded } from '../activitypub/videos'
import { JobQueue } from '../job-queue'
import { generateHLSMasterPlaylistFilename, generateHlsSha256SegmentsFilename, getLiveReplayBaseDirectory } from '../paths'
import { PeerTubeSocket } from '../peertube-socket'
import { LiveQuotaStore } from './live-quota-store'
import { LiveSegmentShaStore } from './live-segment-sha-store'
import { cleanupLive } from './live-utils'
import { MuxingSession } from './shared'
const NodeRtmpSession = require('node-media-server/src/node_rtmp_session')
const context = require('node-media-server/src/node_core_ctx')
const nodeMediaServerLogger = require('node-media-server/src/node_core_logger')
// Disable node media server logs
nodeMediaServerLogger.setLogType(0)
const config = {
rtmp: {
port: CONFIG.LIVE.RTMP.PORT,
chunk_size: VIDEO_LIVE.RTMP.CHUNK_SIZE,
gop_cache: VIDEO_LIVE.RTMP.GOP_CACHE,
ping: VIDEO_LIVE.RTMP.PING,
ping_timeout: VIDEO_LIVE.RTMP.PING_TIMEOUT
}
}
const lTags = loggerTagsFactory('live')
class LiveManager {
private static instance: LiveManager
private readonly muxingSessions = new Map<string, MuxingSession>()
private readonly videoSessions = new Map<number, string>()
private rtmpServer: Server
private rtmpsServer: ServerTLS
private running = false
private constructor () {
}
init () {
const events = this.getContext().nodeEvent
events.on('postPublish', (sessionId: string, streamPath: string) => {
logger.debug('RTMP received stream', { id: sessionId, streamPath, ...lTags(sessionId) })
const splittedPath = streamPath.split('/')
if (splittedPath.length !== 3 || splittedPath[1] !== VIDEO_LIVE.RTMP.BASE_PATH) {
logger.warn('Live path is incorrect.', { streamPath, ...lTags(sessionId) })
return this.abortSession(sessionId)
}
const session = this.getContext().sessions.get(sessionId)
this.handleSession(sessionId, session.inputOriginUrl + streamPath, splittedPath[2])
.catch(err => logger.error('Cannot handle sessions.', { err, ...lTags(sessionId) }))
})
events.on('donePublish', sessionId => {
logger.info('Live session ended.', { sessionId, ...lTags(sessionId) })
})
registerConfigChangedHandler(() => {
if (!this.running && CONFIG.LIVE.ENABLED === true) {
this.run().catch(err => logger.error('Cannot run live server.', { err }))
return
}
if (this.running && CONFIG.LIVE.ENABLED === false) {
this.stop()
}
})
// Cleanup broken lives, that were terminated by a server restart for example
this.handleBrokenLives()
.catch(err => logger.error('Cannot handle broken lives.', { err, ...lTags() }))
}
async run () {
this.running = true
if (CONFIG.LIVE.RTMP.ENABLED) {
logger.info('Running RTMP server on port %d', CONFIG.LIVE.RTMP.PORT, lTags())
this.rtmpServer = createServer(socket => {
const session = new NodeRtmpSession(config, socket)
session.inputOriginUrl = 'rtmp://127.0.0.1:' + CONFIG.LIVE.RTMP.PORT
session.run()
})
this.rtmpServer.on('error', err => {
logger.error('Cannot run RTMP server.', { err, ...lTags() })
})
this.rtmpServer.listen(CONFIG.LIVE.RTMP.PORT)
}
if (CONFIG.LIVE.RTMPS.ENABLED) {
logger.info('Running RTMPS server on port %d', CONFIG.LIVE.RTMPS.PORT, lTags())
const [ key, cert ] = await Promise.all([
readFile(CONFIG.LIVE.RTMPS.KEY_FILE),
readFile(CONFIG.LIVE.RTMPS.CERT_FILE)
])
const serverOptions = { key, cert }
this.rtmpsServer = createServerTLS(serverOptions, socket => {
const session = new NodeRtmpSession(config, socket)
session.inputOriginUrl = 'rtmps://127.0.0.1:' + CONFIG.LIVE.RTMPS.PORT
session.run()
})
this.rtmpsServer.on('error', err => {
logger.error('Cannot run RTMPS server.', { err, ...lTags() })
})
this.rtmpsServer.listen(CONFIG.LIVE.RTMPS.PORT)
}
}
stop () {
this.running = false
if (this.rtmpServer) {
logger.info('Stopping RTMP server.', lTags())
this.rtmpServer.close()
this.rtmpServer = undefined
}
if (this.rtmpsServer) {
logger.info('Stopping RTMPS server.', lTags())
this.rtmpsServer.close()
this.rtmpsServer = undefined
}
// Sessions is an object
this.getContext().sessions.forEach((session: any) => {
if (session instanceof NodeRtmpSession) {
session.stop()
}
})
}
isRunning () {
return !!this.rtmpServer
}
stopSessionOf (videoId: number) {
const sessionId = this.videoSessions.get(videoId)
if (!sessionId) return
this.videoSessions.delete(videoId)
this.abortSession(sessionId)
}
private getContext () {
return context
}
private abortSession (sessionId: string) {
const session = this.getContext().sessions.get(sessionId)
if (session) {
session.stop()
this.getContext().sessions.delete(sessionId)
}
const muxingSession = this.muxingSessions.get(sessionId)
if (muxingSession) {
// Muxing session will fire and event so we correctly cleanup the session
muxingSession.abort()
this.muxingSessions.delete(sessionId)
}
}
private async handleSession (sessionId: string, inputUrl: string, streamKey: string) {
const videoLive = await VideoLiveModel.loadByStreamKey(streamKey)
if (!videoLive) {
logger.warn('Unknown live video with stream key %s.', streamKey, lTags(sessionId))
return this.abortSession(sessionId)
}
const video = videoLive.Video
if (video.isBlacklisted()) {
logger.warn('Video is blacklisted. Refusing stream %s.', streamKey, lTags(sessionId, video.uuid))
return this.abortSession(sessionId)
}
// Cleanup old potential live files (could happen with a permanent live)
LiveSegmentShaStore.Instance.cleanupShaSegments(video.uuid)
const oldStreamingPlaylist = await VideoStreamingPlaylistModel.loadHLSPlaylistByVideo(video.id)
if (oldStreamingPlaylist) {
await cleanupLive(video, oldStreamingPlaylist)
}
this.videoSessions.set(video.id, sessionId)
const now = Date.now()
const probe = await ffprobePromise(inputUrl)
const [ { resolution, ratio }, fps, bitrate ] = await Promise.all([
getVideoStreamDimensionsInfo(inputUrl, probe),
getVideoStreamFPS(inputUrl, probe),
getVideoStreamBitrate(inputUrl, probe)
])
logger.info(
'%s probing took %d ms (bitrate: %d, fps: %d, resolution: %d)',
inputUrl, Date.now() - now, bitrate, fps, resolution, lTags(sessionId, video.uuid)
)
const allResolutions = this.buildAllResolutionsToTranscode(resolution)
logger.info(
'Will mux/transcode live video of original resolution %d.', resolution,
{ allResolutions, ...lTags(sessionId, video.uuid) }
)
const streamingPlaylist = await this.createLivePlaylist(video, allResolutions)
return this.runMuxingSession({
sessionId,
videoLive,
streamingPlaylist,
inputUrl,
fps,
bitrate,
ratio,
allResolutions
})
}
private async runMuxingSession (options: {
sessionId: string
videoLive: MVideoLiveVideo
streamingPlaylist: MStreamingPlaylistVideo
inputUrl: string
fps: number
bitrate: number
ratio: number
allResolutions: number[]
}) {
const { sessionId, videoLive, streamingPlaylist, allResolutions, fps, bitrate, ratio, inputUrl } = options
const videoUUID = videoLive.Video.uuid
const localLTags = lTags(sessionId, videoUUID)
const user = await UserModel.loadByLiveId(videoLive.id)
LiveQuotaStore.Instance.addNewLive(user.id, videoLive.id)
const muxingSession = new MuxingSession({
context: this.getContext(),
user,
sessionId,
videoLive,
streamingPlaylist,
inputUrl,
bitrate,
ratio,
fps,
allResolutions
})
muxingSession.on('master-playlist-created', () => this.publishAndFederateLive(videoLive, localLTags))
muxingSession.on('bad-socket-health', ({ videoId }) => {
logger.error(
'Too much data in client socket stream (ffmpeg is too slow to transcode the video).' +
' Stopping session of video %s.', videoUUID,
localLTags
)
this.stopSessionOf(videoId)
})
muxingSession.on('duration-exceeded', ({ videoId }) => {
logger.info('Stopping session of %s: max duration exceeded.', videoUUID, localLTags)
this.stopSessionOf(videoId)
})
muxingSession.on('quota-exceeded', ({ videoId }) => {
logger.info('Stopping session of %s: user quota exceeded.', videoUUID, localLTags)
this.stopSessionOf(videoId)
})
muxingSession.on('ffmpeg-error', ({ sessionId }) => this.abortSession(sessionId))
muxingSession.on('ffmpeg-end', ({ videoId }) => {
this.onMuxingFFmpegEnd(videoId)
})
muxingSession.on('after-cleanup', ({ videoId }) => {
this.muxingSessions.delete(sessionId)
muxingSession.destroy()
return this.onAfterMuxingCleanup({ videoId })
.catch(err => logger.error('Error in end transmuxing.', { err, ...localLTags }))
})
this.muxingSessions.set(sessionId, muxingSession)
muxingSession.runMuxing()
.catch(err => {
logger.error('Cannot run muxing.', { err, ...localLTags })
this.abortSession(sessionId)
})
}
private async publishAndFederateLive (live: MVideoLiveVideo, localLTags: { tags: string[] }) {
const videoId = live.videoId
try {
const video = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoId)
logger.info('Will publish and federate live %s.', video.url, localLTags)
video.state = VideoState.PUBLISHED
video.publishedAt = new Date()
await video.save()
live.Video = video
await wait(getLiveSegmentTime(live.latencyMode) * 1000 * VIDEO_LIVE.EDGE_LIVE_DELAY_SEGMENTS_NOTIFICATION)
try {
await federateVideoIfNeeded(video, false)
} catch (err) {
logger.error('Cannot federate live video %s.', video.url, { err, ...localLTags })
}
PeerTubeSocket.Instance.sendVideoLiveNewState(video)
} catch (err) {
logger.error('Cannot save/federate live video %d.', videoId, { err, ...localLTags })
}
}
private onMuxingFFmpegEnd (videoId: number) {
this.videoSessions.delete(videoId)
}
private async onAfterMuxingCleanup (options: {
videoId: number | string
cleanupNow?: boolean // Default false
}) {
const { videoId, cleanupNow = false } = options
try {
const fullVideo = await VideoModel.loadAndPopulateAccountAndServerAndTags(videoId)
if (!fullVideo) return
const live = await VideoLiveModel.loadByVideoId(fullVideo.id)
JobQueue.Instance.createJob({
type: 'video-live-ending',
payload: {
videoId: fullVideo.id,
replayDirectory: live.saveReplay
? await this.findReplayDirectory(fullVideo)
: undefined,
publishedAt: fullVideo.publishedAt.toISOString()
}
}, { delay: cleanupNow ? 0 : VIDEO_LIVE.CLEANUP_DELAY })
fullVideo.state = live.permanentLive
? VideoState.WAITING_FOR_LIVE
: VideoState.LIVE_ENDED
await fullVideo.save()
PeerTubeSocket.Instance.sendVideoLiveNewState(fullVideo)
await federateVideoIfNeeded(fullVideo, false)
} catch (err) {
logger.error('Cannot save/federate new video state of live streaming of video %d.', videoId, { err, ...lTags(videoId + '') })
}
}
private async handleBrokenLives () {
const videoUUIDs = await VideoModel.listPublishedLiveUUIDs()
for (const uuid of videoUUIDs) {
await this.onAfterMuxingCleanup({ videoId: uuid, cleanupNow: true })
}
}
private async findReplayDirectory (video: MVideo) {
const directory = getLiveReplayBaseDirectory(video)
const files = await readdir(directory)
if (files.length === 0) return undefined
return join(directory, files.sort().reverse()[0])
}
private buildAllResolutionsToTranscode (originResolution: number) {
const resolutionsEnabled = CONFIG.LIVE.TRANSCODING.ENABLED
? computeLowerResolutionsToTranscode(originResolution, 'live')
: []
return resolutionsEnabled.concat([ originResolution ])
}
private async createLivePlaylist (video: MVideo, allResolutions: number[]): Promise<MStreamingPlaylistVideo> {
const playlist = await VideoStreamingPlaylistModel.loadOrGenerate(video)
playlist.playlistFilename = generateHLSMasterPlaylistFilename(true)
playlist.segmentsSha256Filename = generateHlsSha256SegmentsFilename(true)
playlist.p2pMediaLoaderPeerVersion = P2P_MEDIA_LOADER_PEER_VERSION
playlist.type = VideoStreamingPlaylistType.HLS
playlist.assignP2PMediaLoaderInfoHashes(video, allResolutions)
return playlist.save()
}
static get Instance () {
return this.instance || (this.instance = new this())
}
}
// ---------------------------------------------------------------------------
export {
LiveManager
}