361 lines
11 KiB
TypeScript
361 lines
11 KiB
TypeScript
|
|
import { mapSeries } from 'bluebird'
|
|
import { FSWatcher, watch } from 'chokidar'
|
|
import { FfmpegCommand } from 'fluent-ffmpeg'
|
|
import { appendFile, ensureDir, readFile, stat } from 'fs-extra'
|
|
import { basename, join } from 'path'
|
|
import { EventEmitter } from 'stream'
|
|
import { getLiveMuxingCommand, getLiveTranscodingCommand } from '@server/helpers/ffmpeg-utils'
|
|
import { logger, loggerTagsFactory, LoggerTagsFn } from '@server/helpers/logger'
|
|
import { CONFIG } from '@server/initializers/config'
|
|
import { MEMOIZE_TTL, VIDEO_LIVE } from '@server/initializers/constants'
|
|
import { VideoFileModel } from '@server/models/video/video-file'
|
|
import { MStreamingPlaylistVideo, MUserId, MVideoLiveVideo } from '@server/types/models'
|
|
import { getLiveDirectory } from '../../paths'
|
|
import { VideoTranscodingProfilesManager } from '../../transcoding/video-transcoding-profiles'
|
|
import { isAbleToUploadVideo } from '../../user'
|
|
import { LiveQuotaStore } from '../live-quota-store'
|
|
import { LiveSegmentShaStore } from '../live-segment-sha-store'
|
|
import { buildConcatenatedName } from '../live-utils'
|
|
|
|
import memoizee = require('memoizee')
|
|
|
|
interface MuxingSessionEvents {
|
|
'master-playlist-created': ({ videoId: number }) => void
|
|
|
|
'bad-socket-health': ({ videoId: number }) => void
|
|
'duration-exceeded': ({ videoId: number }) => void
|
|
'quota-exceeded': ({ videoId: number }) => void
|
|
|
|
'ffmpeg-end': ({ videoId: number }) => void
|
|
'ffmpeg-error': ({ sessionId: string }) => void
|
|
|
|
'after-cleanup': ({ videoId: number }) => void
|
|
}
|
|
|
|
declare interface MuxingSession {
|
|
on<U extends keyof MuxingSessionEvents>(
|
|
event: U, listener: MuxingSessionEvents[U]
|
|
): this
|
|
|
|
emit<U extends keyof MuxingSessionEvents>(
|
|
event: U, ...args: Parameters<MuxingSessionEvents[U]>
|
|
): boolean
|
|
}
|
|
|
|
class MuxingSession extends EventEmitter {
|
|
|
|
private ffmpegCommand: FfmpegCommand
|
|
|
|
private readonly context: any
|
|
private readonly user: MUserId
|
|
private readonly sessionId: string
|
|
private readonly videoLive: MVideoLiveVideo
|
|
private readonly streamingPlaylist: MStreamingPlaylistVideo
|
|
private readonly rtmpUrl: string
|
|
private readonly fps: number
|
|
private readonly allResolutions: number[]
|
|
|
|
private readonly bitrate: number
|
|
private readonly ratio: number
|
|
|
|
private readonly videoId: number
|
|
private readonly videoUUID: string
|
|
private readonly saveReplay: boolean
|
|
|
|
private readonly lTags: LoggerTagsFn
|
|
|
|
private segmentsToProcessPerPlaylist: { [playlistId: string]: string[] } = {}
|
|
|
|
private tsWatcher: FSWatcher
|
|
private masterWatcher: FSWatcher
|
|
|
|
private readonly isAbleToUploadVideoWithCache = memoizee((userId: number) => {
|
|
return isAbleToUploadVideo(userId, 1000)
|
|
}, { maxAge: MEMOIZE_TTL.LIVE_ABLE_TO_UPLOAD })
|
|
|
|
private readonly hasClientSocketInBadHealthWithCache = memoizee((sessionId: string) => {
|
|
return this.hasClientSocketInBadHealth(sessionId)
|
|
}, { maxAge: MEMOIZE_TTL.LIVE_CHECK_SOCKET_HEALTH })
|
|
|
|
constructor (options: {
|
|
context: any
|
|
user: MUserId
|
|
sessionId: string
|
|
videoLive: MVideoLiveVideo
|
|
streamingPlaylist: MStreamingPlaylistVideo
|
|
rtmpUrl: string
|
|
fps: number
|
|
bitrate: number
|
|
ratio: number
|
|
allResolutions: number[]
|
|
}) {
|
|
super()
|
|
|
|
this.context = options.context
|
|
this.user = options.user
|
|
this.sessionId = options.sessionId
|
|
this.videoLive = options.videoLive
|
|
this.streamingPlaylist = options.streamingPlaylist
|
|
this.rtmpUrl = options.rtmpUrl
|
|
this.fps = options.fps
|
|
|
|
this.bitrate = options.bitrate
|
|
this.ratio = options.bitrate
|
|
|
|
this.allResolutions = options.allResolutions
|
|
|
|
this.videoId = this.videoLive.Video.id
|
|
this.videoUUID = this.videoLive.Video.uuid
|
|
|
|
this.saveReplay = this.videoLive.saveReplay
|
|
|
|
this.lTags = loggerTagsFactory('live', this.sessionId, this.videoUUID)
|
|
}
|
|
|
|
async runMuxing () {
|
|
this.createFiles()
|
|
|
|
const outPath = await this.prepareDirectories()
|
|
|
|
this.ffmpegCommand = CONFIG.LIVE.TRANSCODING.ENABLED
|
|
? await getLiveTranscodingCommand({
|
|
rtmpUrl: this.rtmpUrl,
|
|
|
|
outPath,
|
|
masterPlaylistName: this.streamingPlaylist.playlistFilename,
|
|
|
|
resolutions: this.allResolutions,
|
|
fps: this.fps,
|
|
bitrate: this.bitrate,
|
|
ratio: this.ratio,
|
|
|
|
availableEncoders: VideoTranscodingProfilesManager.Instance.getAvailableEncoders(),
|
|
profile: CONFIG.LIVE.TRANSCODING.PROFILE
|
|
})
|
|
: getLiveMuxingCommand(this.rtmpUrl, outPath, this.streamingPlaylist.playlistFilename)
|
|
|
|
logger.info('Running live muxing/transcoding for %s.', this.videoUUID, this.lTags)
|
|
|
|
this.watchTSFiles(outPath)
|
|
this.watchMasterFile(outPath)
|
|
|
|
this.ffmpegCommand.on('error', (err, stdout, stderr) => {
|
|
this.onFFmpegError(err, stdout, stderr, outPath)
|
|
})
|
|
|
|
this.ffmpegCommand.on('end', () => this.onFFmpegEnded(outPath))
|
|
|
|
this.ffmpegCommand.run()
|
|
}
|
|
|
|
abort () {
|
|
if (!this.ffmpegCommand) return
|
|
|
|
this.ffmpegCommand.kill('SIGINT')
|
|
}
|
|
|
|
destroy () {
|
|
this.removeAllListeners()
|
|
this.isAbleToUploadVideoWithCache.clear()
|
|
this.hasClientSocketInBadHealthWithCache.clear()
|
|
}
|
|
|
|
private onFFmpegError (err: any, stdout: string, stderr: string, outPath: string) {
|
|
this.onFFmpegEnded(outPath)
|
|
|
|
// Don't care that we killed the ffmpeg process
|
|
if (err?.message?.includes('Exiting normally')) return
|
|
|
|
logger.error('Live transcoding error.', { err, stdout, stderr, ...this.lTags })
|
|
|
|
this.emit('ffmpeg-error', ({ sessionId: this.sessionId }))
|
|
}
|
|
|
|
private onFFmpegEnded (outPath: string) {
|
|
logger.info('RTMP transmuxing for video %s ended. Scheduling cleanup', this.rtmpUrl, this.lTags)
|
|
|
|
setTimeout(() => {
|
|
// Wait latest segments generation, and close watchers
|
|
|
|
Promise.all([ this.tsWatcher.close(), this.masterWatcher.close() ])
|
|
.then(() => {
|
|
// Process remaining segments hash
|
|
for (const key of Object.keys(this.segmentsToProcessPerPlaylist)) {
|
|
this.processSegments(outPath, this.segmentsToProcessPerPlaylist[key])
|
|
}
|
|
})
|
|
.catch(err => {
|
|
logger.error(
|
|
'Cannot close watchers of %s or process remaining hash segments.', outPath,
|
|
{ err, ...this.lTags }
|
|
)
|
|
})
|
|
|
|
this.emit('after-cleanup', { videoId: this.videoId })
|
|
}, 1000)
|
|
}
|
|
|
|
private watchMasterFile (outPath: string) {
|
|
this.masterWatcher = watch(outPath + '/' + this.streamingPlaylist.playlistFilename)
|
|
|
|
this.masterWatcher.on('add', () => {
|
|
this.emit('master-playlist-created', { videoId: this.videoId })
|
|
|
|
this.masterWatcher.close()
|
|
.catch(err => logger.error('Cannot close master watcher of %s.', outPath, { err, ...this.lTags }))
|
|
})
|
|
}
|
|
|
|
private watchTSFiles (outPath: string) {
|
|
const startStreamDateTime = new Date().getTime()
|
|
|
|
this.tsWatcher = watch(outPath + '/*.ts')
|
|
|
|
const playlistIdMatcher = /^([\d+])-/
|
|
|
|
const addHandler = async segmentPath => {
|
|
logger.debug('Live add handler of %s.', segmentPath, this.lTags)
|
|
|
|
const playlistId = basename(segmentPath).match(playlistIdMatcher)[0]
|
|
|
|
const segmentsToProcess = this.segmentsToProcessPerPlaylist[playlistId] || []
|
|
this.processSegments(outPath, segmentsToProcess)
|
|
|
|
this.segmentsToProcessPerPlaylist[playlistId] = [ segmentPath ]
|
|
|
|
if (this.hasClientSocketInBadHealthWithCache(this.sessionId)) {
|
|
this.emit('bad-socket-health', { videoId: this.videoId })
|
|
return
|
|
}
|
|
|
|
// Duration constraint check
|
|
if (this.isDurationConstraintValid(startStreamDateTime) !== true) {
|
|
this.emit('duration-exceeded', { videoId: this.videoId })
|
|
return
|
|
}
|
|
|
|
// Check user quota if the user enabled replay saving
|
|
if (await this.isQuotaExceeded(segmentPath) === true) {
|
|
this.emit('quota-exceeded', { videoId: this.videoId })
|
|
}
|
|
}
|
|
|
|
const deleteHandler = segmentPath => LiveSegmentShaStore.Instance.removeSegmentSha(this.videoUUID, segmentPath)
|
|
|
|
this.tsWatcher.on('add', p => addHandler(p))
|
|
this.tsWatcher.on('unlink', p => deleteHandler(p))
|
|
}
|
|
|
|
private async isQuotaExceeded (segmentPath: string) {
|
|
if (this.saveReplay !== true) return false
|
|
|
|
try {
|
|
const segmentStat = await stat(segmentPath)
|
|
|
|
LiveQuotaStore.Instance.addQuotaTo(this.user.id, this.videoLive.id, segmentStat.size)
|
|
|
|
const canUpload = await this.isAbleToUploadVideoWithCache(this.user.id)
|
|
|
|
return canUpload !== true
|
|
} catch (err) {
|
|
logger.error('Cannot stat %s or check quota of %d.', segmentPath, this.user.id, { err, ...this.lTags })
|
|
}
|
|
}
|
|
|
|
private createFiles () {
|
|
for (let i = 0; i < this.allResolutions.length; i++) {
|
|
const resolution = this.allResolutions[i]
|
|
|
|
const file = new VideoFileModel({
|
|
resolution,
|
|
size: -1,
|
|
extname: '.ts',
|
|
infoHash: null,
|
|
fps: this.fps,
|
|
videoStreamingPlaylistId: this.streamingPlaylist.id
|
|
})
|
|
|
|
VideoFileModel.customUpsert(file, 'streaming-playlist', null)
|
|
.catch(err => logger.error('Cannot create file for live streaming.', { err, ...this.lTags }))
|
|
}
|
|
}
|
|
|
|
private async prepareDirectories () {
|
|
const outPath = getLiveDirectory(this.videoLive.Video)
|
|
await ensureDir(outPath)
|
|
|
|
const replayDirectory = join(outPath, VIDEO_LIVE.REPLAY_DIRECTORY)
|
|
|
|
if (this.videoLive.saveReplay === true) {
|
|
await ensureDir(replayDirectory)
|
|
}
|
|
|
|
return outPath
|
|
}
|
|
|
|
private isDurationConstraintValid (streamingStartTime: number) {
|
|
const maxDuration = CONFIG.LIVE.MAX_DURATION
|
|
// No limit
|
|
if (maxDuration < 0) return true
|
|
|
|
const now = new Date().getTime()
|
|
const max = streamingStartTime + maxDuration
|
|
|
|
return now <= max
|
|
}
|
|
|
|
private processSegments (hlsVideoPath: string, segmentPaths: string[]) {
|
|
mapSeries(segmentPaths, async previousSegment => {
|
|
// Add sha hash of previous segments, because ffmpeg should have finished generating them
|
|
await LiveSegmentShaStore.Instance.addSegmentSha(this.videoUUID, previousSegment)
|
|
|
|
if (this.saveReplay) {
|
|
await this.addSegmentToReplay(hlsVideoPath, previousSegment)
|
|
}
|
|
}).catch(err => logger.error('Cannot process segments in %s', hlsVideoPath, { err, ...this.lTags }))
|
|
}
|
|
|
|
private hasClientSocketInBadHealth (sessionId: string) {
|
|
const rtmpSession = this.context.sessions.get(sessionId)
|
|
|
|
if (!rtmpSession) {
|
|
logger.warn('Cannot get session %s to check players socket health.', sessionId, this.lTags)
|
|
return
|
|
}
|
|
|
|
for (const playerSessionId of rtmpSession.players) {
|
|
const playerSession = this.context.sessions.get(playerSessionId)
|
|
|
|
if (!playerSession) {
|
|
logger.error('Cannot get player session %s to check socket health.', playerSession, this.lTags)
|
|
continue
|
|
}
|
|
|
|
if (playerSession.socket.writableLength > VIDEO_LIVE.MAX_SOCKET_WAITING_DATA) {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
private async addSegmentToReplay (hlsVideoPath: string, segmentPath: string) {
|
|
const segmentName = basename(segmentPath)
|
|
const dest = join(hlsVideoPath, VIDEO_LIVE.REPLAY_DIRECTORY, buildConcatenatedName(segmentName))
|
|
|
|
try {
|
|
const data = await readFile(segmentPath)
|
|
|
|
await appendFile(dest, data)
|
|
} catch (err) {
|
|
logger.error('Cannot copy segment %s to replay directory.', segmentPath, { err, ...this.lTags })
|
|
}
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
export {
|
|
MuxingSession
|
|
}
|