518 lines
16 KiB
TypeScript
518 lines
16 KiB
TypeScript
import { mapSeries } from 'bluebird'
|
|
import { FSWatcher, watch } from 'chokidar'
|
|
import { EventEmitter } from 'events'
|
|
import { appendFile, ensureDir, readFile, stat } from 'fs-extra'
|
|
import PQueue from 'p-queue'
|
|
import { basename, join } from 'path'
|
|
import { computeOutputFPS } from '@server/helpers/ffmpeg'
|
|
import { logger, loggerTagsFactory, LoggerTagsFn } from '@server/helpers/logger'
|
|
import { CONFIG } from '@server/initializers/config'
|
|
import { MEMOIZE_TTL, P2P_MEDIA_LOADER_PEER_VERSION, VIDEO_LIVE } from '@server/initializers/constants'
|
|
import { removeHLSFileObjectStorageByPath, storeHLSFileFromContent, storeHLSFileFromPath } from '@server/lib/object-storage'
|
|
import { VideoFileModel } from '@server/models/video/video-file'
|
|
import { VideoStreamingPlaylistModel } from '@server/models/video/video-streaming-playlist'
|
|
import { MStreamingPlaylistVideo, MUserId, MVideoLiveVideo } from '@server/types/models'
|
|
import { VideoStorage, VideoStreamingPlaylistType } from '@shared/models'
|
|
import {
|
|
generateHLSMasterPlaylistFilename,
|
|
generateHlsSha256SegmentsFilename,
|
|
getLiveDirectory,
|
|
getLiveReplayBaseDirectory
|
|
} from '../../paths'
|
|
import { isAbleToUploadVideo } from '../../user'
|
|
import { LiveQuotaStore } from '../live-quota-store'
|
|
import { LiveSegmentShaStore } from '../live-segment-sha-store'
|
|
import { buildConcatenatedName, getLiveSegmentTime } from '../live-utils'
|
|
import { AbstractTranscodingWrapper, FFmpegTranscodingWrapper, RemoteTranscodingWrapper } from './transcoding-wrapper'
|
|
|
|
import memoizee = require('memoizee')
|
|
interface MuxingSessionEvents {
|
|
'live-ready': (options: { videoUUID: string }) => void
|
|
|
|
'bad-socket-health': (options: { videoUUID: string }) => void
|
|
'duration-exceeded': (options: { videoUUID: string }) => void
|
|
'quota-exceeded': (options: { videoUUID: string }) => void
|
|
|
|
'transcoding-end': (options: { videoUUID: string }) => void
|
|
'transcoding-error': (options: { videoUUID: string }) => void
|
|
|
|
'after-cleanup': (options: { videoUUID: string }) => 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 transcodingWrapper: AbstractTranscodingWrapper
|
|
|
|
private readonly context: any
|
|
private readonly user: MUserId
|
|
private readonly sessionId: string
|
|
private readonly videoLive: MVideoLiveVideo
|
|
|
|
private readonly inputLocalUrl: string
|
|
private readonly inputPublicUrl: string
|
|
|
|
private readonly fps: number
|
|
private readonly allResolutions: number[]
|
|
|
|
private readonly bitrate: number
|
|
private readonly ratio: number
|
|
|
|
private readonly hasAudio: boolean
|
|
|
|
private readonly videoUUID: string
|
|
private readonly saveReplay: boolean
|
|
|
|
private readonly outDirectory: string
|
|
private readonly replayDirectory: string
|
|
|
|
private readonly lTags: LoggerTagsFn
|
|
|
|
// Path -> Queue
|
|
private readonly objectStorageSendQueues = new Map<string, PQueue>()
|
|
|
|
private segmentsToProcessPerPlaylist: { [playlistId: string]: string[] } = {}
|
|
|
|
private streamingPlaylist: MStreamingPlaylistVideo
|
|
private liveSegmentShaStore: LiveSegmentShaStore
|
|
|
|
private filesWatcher: FSWatcher
|
|
|
|
private masterPlaylistCreated = false
|
|
private liveReady = false
|
|
|
|
private aborted = false
|
|
|
|
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
|
|
|
|
inputLocalUrl: string
|
|
inputPublicUrl: string
|
|
|
|
fps: number
|
|
bitrate: number
|
|
ratio: number
|
|
allResolutions: number[]
|
|
hasAudio: boolean
|
|
}) {
|
|
super()
|
|
|
|
this.context = options.context
|
|
this.user = options.user
|
|
this.sessionId = options.sessionId
|
|
this.videoLive = options.videoLive
|
|
|
|
this.inputLocalUrl = options.inputLocalUrl
|
|
this.inputPublicUrl = options.inputPublicUrl
|
|
|
|
this.fps = options.fps
|
|
|
|
this.bitrate = options.bitrate
|
|
this.ratio = options.ratio
|
|
|
|
this.hasAudio = options.hasAudio
|
|
|
|
this.allResolutions = options.allResolutions
|
|
|
|
this.videoUUID = this.videoLive.Video.uuid
|
|
|
|
this.saveReplay = this.videoLive.saveReplay
|
|
|
|
this.outDirectory = getLiveDirectory(this.videoLive.Video)
|
|
this.replayDirectory = join(getLiveReplayBaseDirectory(this.videoLive.Video), new Date().toISOString())
|
|
|
|
this.lTags = loggerTagsFactory('live', this.sessionId, this.videoUUID)
|
|
}
|
|
|
|
async runMuxing () {
|
|
this.streamingPlaylist = await this.createLivePlaylist()
|
|
|
|
this.createLiveShaStore()
|
|
this.createFiles()
|
|
|
|
await this.prepareDirectories()
|
|
|
|
this.transcodingWrapper = this.buildTranscodingWrapper()
|
|
|
|
this.transcodingWrapper.on('end', () => this.onTranscodedEnded())
|
|
this.transcodingWrapper.on('error', () => this.onTranscodingError())
|
|
|
|
await this.transcodingWrapper.run()
|
|
|
|
this.filesWatcher = watch(this.outDirectory, { depth: 0 })
|
|
|
|
this.watchMasterFile()
|
|
this.watchTSFiles()
|
|
}
|
|
|
|
abort () {
|
|
if (!this.transcodingWrapper) return
|
|
|
|
this.aborted = true
|
|
this.transcodingWrapper.abort()
|
|
}
|
|
|
|
destroy () {
|
|
this.removeAllListeners()
|
|
this.isAbleToUploadVideoWithCache.clear()
|
|
this.hasClientSocketInBadHealthWithCache.clear()
|
|
}
|
|
|
|
private watchMasterFile () {
|
|
this.filesWatcher.on('add', async path => {
|
|
if (path !== join(this.outDirectory, this.streamingPlaylist.playlistFilename)) return
|
|
if (this.masterPlaylistCreated === true) return
|
|
|
|
try {
|
|
if (this.streamingPlaylist.storage === VideoStorage.OBJECT_STORAGE) {
|
|
const masterContent = await readFile(path, 'utf-8')
|
|
logger.debug('Uploading live master playlist on object storage for %s', this.videoUUID, { masterContent, ...this.lTags() })
|
|
|
|
const url = await storeHLSFileFromContent(this.streamingPlaylist, this.streamingPlaylist.playlistFilename, masterContent)
|
|
|
|
this.streamingPlaylist.playlistUrl = url
|
|
}
|
|
|
|
this.streamingPlaylist.assignP2PMediaLoaderInfoHashes(this.videoLive.Video, this.allResolutions)
|
|
|
|
await this.streamingPlaylist.save()
|
|
} catch (err) {
|
|
logger.error('Cannot update streaming playlist.', { err, ...this.lTags() })
|
|
}
|
|
|
|
this.masterPlaylistCreated = true
|
|
|
|
logger.info('Master playlist file for %s has been created', this.videoUUID, this.lTags())
|
|
})
|
|
}
|
|
|
|
private watchTSFiles () {
|
|
const startStreamDateTime = new Date().getTime()
|
|
|
|
const addHandler = async (segmentPath: string) => {
|
|
if (segmentPath.endsWith('.ts') !== true) return
|
|
|
|
logger.debug('Live add handler of TS file %s.', segmentPath, this.lTags())
|
|
|
|
const playlistId = this.getPlaylistIdFromTS(segmentPath)
|
|
|
|
const segmentsToProcess = this.segmentsToProcessPerPlaylist[playlistId] || []
|
|
this.processSegments(segmentsToProcess)
|
|
|
|
this.segmentsToProcessPerPlaylist[playlistId] = [ segmentPath ]
|
|
|
|
if (this.hasClientSocketInBadHealthWithCache(this.sessionId)) {
|
|
this.emit('bad-socket-health', { videoUUID: this.videoUUID })
|
|
return
|
|
}
|
|
|
|
// Duration constraint check
|
|
if (this.isDurationConstraintValid(startStreamDateTime) !== true) {
|
|
this.emit('duration-exceeded', { videoUUID: this.videoUUID })
|
|
return
|
|
}
|
|
|
|
// Check user quota if the user enabled replay saving
|
|
if (await this.isQuotaExceeded(segmentPath) === true) {
|
|
this.emit('quota-exceeded', { videoUUID: this.videoUUID })
|
|
}
|
|
}
|
|
|
|
const deleteHandler = async (segmentPath: string) => {
|
|
if (segmentPath.endsWith('.ts') !== true) return
|
|
|
|
logger.debug('Live delete handler of TS file %s.', segmentPath, this.lTags())
|
|
|
|
try {
|
|
await this.liveSegmentShaStore.removeSegmentSha(segmentPath)
|
|
} catch (err) {
|
|
logger.warn('Cannot remove segment sha %s from sha store', segmentPath, { err, ...this.lTags() })
|
|
}
|
|
|
|
if (this.streamingPlaylist.storage === VideoStorage.OBJECT_STORAGE) {
|
|
try {
|
|
await removeHLSFileObjectStorageByPath(this.streamingPlaylist, segmentPath)
|
|
} catch (err) {
|
|
logger.error('Cannot remove segment %s from object storage', segmentPath, { err, ...this.lTags() })
|
|
}
|
|
}
|
|
}
|
|
|
|
this.filesWatcher.on('add', p => addHandler(p))
|
|
this.filesWatcher.on('unlink', p => deleteHandler(p))
|
|
}
|
|
|
|
private async isQuotaExceeded (segmentPath: string) {
|
|
if (this.saveReplay !== true) return false
|
|
if (this.aborted) return false
|
|
|
|
try {
|
|
const segmentStat = await stat(segmentPath)
|
|
|
|
LiveQuotaStore.Instance.addQuotaTo(this.user.id, this.sessionId, 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,
|
|
storage: this.streamingPlaylist.storage,
|
|
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 () {
|
|
await ensureDir(this.outDirectory)
|
|
|
|
if (this.videoLive.saveReplay === true) {
|
|
await ensureDir(this.replayDirectory)
|
|
}
|
|
}
|
|
|
|
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 (segmentPaths: string[]) {
|
|
mapSeries(segmentPaths, previousSegment => this.processSegment(previousSegment))
|
|
.catch(err => {
|
|
if (this.aborted) return
|
|
|
|
logger.error('Cannot process segments', { err, ...this.lTags() })
|
|
})
|
|
}
|
|
|
|
private async processSegment (segmentPath: string) {
|
|
// Add sha hash of previous segments, because ffmpeg should have finished generating them
|
|
await this.liveSegmentShaStore.addSegmentSha(segmentPath)
|
|
|
|
if (this.saveReplay) {
|
|
await this.addSegmentToReplay(segmentPath)
|
|
}
|
|
|
|
if (this.streamingPlaylist.storage === VideoStorage.OBJECT_STORAGE) {
|
|
try {
|
|
await storeHLSFileFromPath(this.streamingPlaylist, segmentPath)
|
|
|
|
await this.processM3U8ToObjectStorage(segmentPath)
|
|
} catch (err) {
|
|
logger.error('Cannot store TS segment %s in object storage', segmentPath, { err, ...this.lTags() })
|
|
}
|
|
}
|
|
|
|
// Master playlist and segment JSON file are created, live is ready
|
|
if (this.masterPlaylistCreated && !this.liveReady) {
|
|
this.liveReady = true
|
|
|
|
this.emit('live-ready', { videoUUID: this.videoUUID })
|
|
}
|
|
}
|
|
|
|
private async processM3U8ToObjectStorage (segmentPath: string) {
|
|
const m3u8Path = join(this.outDirectory, this.getPlaylistNameFromTS(segmentPath))
|
|
|
|
logger.debug('Process M3U8 file %s.', m3u8Path, this.lTags())
|
|
|
|
const segmentName = basename(segmentPath)
|
|
|
|
const playlistContent = await readFile(m3u8Path, 'utf-8')
|
|
// Remove new chunk references, that will be processed later
|
|
const filteredPlaylistContent = playlistContent.substring(0, playlistContent.lastIndexOf(segmentName) + segmentName.length) + '\n'
|
|
|
|
try {
|
|
if (!this.objectStorageSendQueues.has(m3u8Path)) {
|
|
this.objectStorageSendQueues.set(m3u8Path, new PQueue({ concurrency: 1 }))
|
|
}
|
|
|
|
const queue = this.objectStorageSendQueues.get(m3u8Path)
|
|
await queue.add(() => storeHLSFileFromContent(this.streamingPlaylist, m3u8Path, filteredPlaylistContent))
|
|
} catch (err) {
|
|
logger.error('Cannot store in object storage m3u8 file %s', m3u8Path, { err, ...this.lTags() })
|
|
}
|
|
}
|
|
|
|
private onTranscodingError () {
|
|
this.emit('transcoding-error', ({ videoUUID: this.videoUUID }))
|
|
}
|
|
|
|
private onTranscodedEnded () {
|
|
this.emit('transcoding-end', ({ videoUUID: this.videoUUID }))
|
|
|
|
logger.info('RTMP transmuxing for video %s ended. Scheduling cleanup', this.inputLocalUrl, this.lTags())
|
|
|
|
setTimeout(() => {
|
|
// Wait latest segments generation, and close watchers
|
|
|
|
const promise = this.filesWatcher?.close() || Promise.resolve()
|
|
promise
|
|
.then(() => {
|
|
// Process remaining segments hash
|
|
for (const key of Object.keys(this.segmentsToProcessPerPlaylist)) {
|
|
this.processSegments(this.segmentsToProcessPerPlaylist[key])
|
|
}
|
|
})
|
|
.catch(err => {
|
|
logger.error(
|
|
'Cannot close watchers of %s or process remaining hash segments.', this.outDirectory,
|
|
{ err, ...this.lTags() }
|
|
)
|
|
})
|
|
|
|
this.emit('after-cleanup', { videoUUID: this.videoUUID })
|
|
}, 1000)
|
|
}
|
|
|
|
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 (segmentPath: string) {
|
|
const segmentName = basename(segmentPath)
|
|
const dest = join(this.replayDirectory, 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() })
|
|
}
|
|
}
|
|
|
|
private async createLivePlaylist (): Promise<MStreamingPlaylistVideo> {
|
|
const playlist = await VideoStreamingPlaylistModel.loadOrGenerate(this.videoLive.Video)
|
|
|
|
playlist.playlistFilename = generateHLSMasterPlaylistFilename(true)
|
|
playlist.segmentsSha256Filename = generateHlsSha256SegmentsFilename(true)
|
|
|
|
playlist.p2pMediaLoaderPeerVersion = P2P_MEDIA_LOADER_PEER_VERSION
|
|
playlist.type = VideoStreamingPlaylistType.HLS
|
|
|
|
playlist.storage = CONFIG.OBJECT_STORAGE.ENABLED
|
|
? VideoStorage.OBJECT_STORAGE
|
|
: VideoStorage.FILE_SYSTEM
|
|
|
|
return playlist.save()
|
|
}
|
|
|
|
private createLiveShaStore () {
|
|
this.liveSegmentShaStore = new LiveSegmentShaStore({
|
|
videoUUID: this.videoLive.Video.uuid,
|
|
sha256Path: join(this.outDirectory, this.streamingPlaylist.segmentsSha256Filename),
|
|
streamingPlaylist: this.streamingPlaylist,
|
|
sendToObjectStorage: CONFIG.OBJECT_STORAGE.ENABLED
|
|
})
|
|
}
|
|
|
|
private buildTranscodingWrapper () {
|
|
const options = {
|
|
streamingPlaylist: this.streamingPlaylist,
|
|
videoLive: this.videoLive,
|
|
|
|
lTags: this.lTags,
|
|
|
|
sessionId: this.sessionId,
|
|
inputLocalUrl: this.inputLocalUrl,
|
|
inputPublicUrl: this.inputPublicUrl,
|
|
|
|
toTranscode: this.allResolutions.map(resolution => ({
|
|
resolution,
|
|
fps: computeOutputFPS({ inputFPS: this.fps, resolution })
|
|
})),
|
|
|
|
fps: this.fps,
|
|
bitrate: this.bitrate,
|
|
ratio: this.ratio,
|
|
hasAudio: this.hasAudio,
|
|
|
|
segmentListSize: VIDEO_LIVE.SEGMENTS_LIST_SIZE,
|
|
segmentDuration: getLiveSegmentTime(this.videoLive.latencyMode),
|
|
|
|
outDirectory: this.outDirectory
|
|
}
|
|
|
|
return CONFIG.LIVE.TRANSCODING.ENABLED && CONFIG.LIVE.TRANSCODING.REMOTE_RUNNERS.ENABLED
|
|
? new RemoteTranscodingWrapper(options)
|
|
: new FFmpegTranscodingWrapper(options)
|
|
}
|
|
|
|
private getPlaylistIdFromTS (segmentPath: string) {
|
|
const playlistIdMatcher = /^([\d+])-/
|
|
|
|
return basename(segmentPath).match(playlistIdMatcher)[1]
|
|
}
|
|
|
|
private getPlaylistNameFromTS (segmentPath: string) {
|
|
return `${this.getPlaylistIdFromTS(segmentPath)}.m3u8`
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
export {
|
|
MuxingSession
|
|
}
|