mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2024-12-20 19:06:06 +01:00
339 lines
11 KiB
JavaScript
339 lines
11 KiB
JavaScript
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const Path = require('path')
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const fs = require('../libs/fsExtra')
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const workerThreads = require('worker_threads')
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const Logger = require('../Logger')
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const AbManagerTask = require('../objects/AbManagerTask')
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const filePerms = require('../utils/filePerms')
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const { getId } = require('../utils/index')
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const { writeConcatFile } = require('../utils/ffmpegHelpers')
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const toneHelpers = require('../utils/toneHelpers')
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const { getFileSize } = require('../utils/fileUtils')
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class AbMergeManager {
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constructor(db, clientEmitter) {
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this.db = db
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this.clientEmitter = clientEmitter
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this.downloadDirPath = Path.join(global.MetadataPath, 'downloads')
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this.downloadDirPathExist = false
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this.pendingTasks = []
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this.tasks = []
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}
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async ensureDownloadDirPath() { // Creates download path if necessary and sets owner and permissions
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if (this.downloadDirPathExist) return
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var pathCreated = false
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if (!(await fs.pathExists(this.downloadDirPath))) {
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await fs.mkdir(this.downloadDirPath)
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pathCreated = true
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}
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if (pathCreated) {
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await filePerms.setDefault(this.downloadDirPath)
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}
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this.downloadDirPathExist = true
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}
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getTask(taskId) {
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return this.tasks.find(d => d.id === taskId)
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}
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removeTaskById(taskId) {
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var task = this.getTask(taskId)
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if (task) {
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this.removeTask(task)
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}
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}
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async removeOrphanDownloads() {
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try {
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var dirs = await fs.readdir(this.downloadDirPath)
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if (!dirs || !dirs.length) return true
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dirs = dirs.filter(d => d.startsWith('abmerge'))
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await Promise.all(dirs.map(async (dirname) => {
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var fullPath = Path.join(this.downloadDirPath, dirname)
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Logger.info(`Removing Orphan Download ${dirname}`)
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return fs.remove(fullPath)
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}))
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return true
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} catch (error) {
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return false
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}
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}
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async startAudiobookMerge(user, libraryItem) {
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var taskId = getId('abmerge')
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var dlpath = Path.join(this.downloadDirPath, taskId)
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Logger.info(`Start audiobook merge for ${libraryItem.id} - TaskId: ${taskId} - ${dlpath}`)
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var audiobookDirname = Path.basename(libraryItem.path)
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var filename = audiobookDirname + '.m4b'
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var taskData = {
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id: taskId,
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libraryItemId: libraryItem.id,
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type: 'abmerge',
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dirpath: dlpath,
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path: Path.join(dlpath, filename),
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filename,
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ext: '.m4b',
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userId: user.id,
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libraryItemPath: libraryItem.path,
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originalTrackPaths: libraryItem.media.tracks.map(t => t.metadata.path)
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}
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var abManagerTask = new AbManagerTask()
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abManagerTask.setData(taskData)
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abManagerTask.setTimeoutTimer(this.downloadTimedOut.bind(this))
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try {
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await fs.mkdir(abManagerTask.dirpath)
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} catch (error) {
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Logger.error(`[AbMergeManager] Failed to make directory ${abManagerTask.dirpath}`)
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Logger.debug(`[AbMergeManager] Make directory error: ${error}`)
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var taskJson = abManagerTask.toJSON()
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this.clientEmitter(user.id, 'abmerge_failed', taskJson)
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return
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}
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this.clientEmitter(user.id, 'abmerge_started', abManagerTask.toJSON())
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this.runAudiobookMerge(libraryItem, abManagerTask)
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}
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async runAudiobookMerge(libraryItem, abManagerTask) {
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// If changing audio file type then encoding is needed
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var audioTracks = libraryItem.media.tracks
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var audioRequiresEncode = audioTracks[0].metadata.ext !== abManagerTask.ext
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var shouldIncludeCover = libraryItem.media.coverPath
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var firstTrackIsM4b = audioTracks[0].metadata.ext.toLowerCase() === '.m4b'
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var isOneTrack = audioTracks.length === 1
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const ffmpegInputs = []
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if (!isOneTrack) {
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var concatFilePath = Path.join(abManagerTask.dirpath, 'files.txt')
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console.log('Write files.txt', concatFilePath)
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await writeConcatFile(audioTracks, concatFilePath)
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ffmpegInputs.push({
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input: concatFilePath,
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options: ['-safe 0', '-f concat']
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})
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} else {
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ffmpegInputs.push({
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input: audioTracks[0].metadata.path,
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options: firstTrackIsM4b ? ['-f mp4'] : []
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})
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}
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const logLevel = process.env.NODE_ENV === 'production' ? 'error' : 'warning'
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var ffmpegOptions = [`-loglevel ${logLevel}`]
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var ffmpegOutputOptions = []
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if (audioRequiresEncode) {
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ffmpegOptions = ffmpegOptions.concat([
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'-map 0:a',
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'-acodec aac',
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'-ac 2',
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'-b:a 64k'
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// '-movflags use_metadata_tags'
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])
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} else {
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ffmpegOptions.push('-max_muxing_queue_size 1000')
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if (isOneTrack && firstTrackIsM4b && !shouldIncludeCover) {
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ffmpegOptions.push('-c copy')
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} else {
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ffmpegOptions.push('-c:a copy')
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}
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}
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if (abManagerTask.ext === '.m4b') {
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ffmpegOutputOptions.push('-f mp4')
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}
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var chaptersFilePath = null
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if (libraryItem.media.chapters.length) {
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chaptersFilePath = Path.join(abManagerTask.dirpath, 'chapters.txt')
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try {
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await toneHelpers.writeToneChaptersFile(libraryItem.media.chapters, chaptersFilePath)
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} catch (error) {
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Logger.error(`[AbMergeManager] Write chapters.txt failed`, error)
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chaptersFilePath = null
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}
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}
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const toneMetadataObject = toneHelpers.getToneMetadataObject(libraryItem, chaptersFilePath)
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toneMetadataObject.TrackNumber = 1
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abManagerTask.toneMetadataObject = toneMetadataObject
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Logger.debug(`[AbMergeManager] Book "${libraryItem.media.metadata.title}" tone metadata object=`, toneMetadataObject)
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var workerData = {
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inputs: ffmpegInputs,
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options: ffmpegOptions,
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outputOptions: ffmpegOutputOptions,
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output: abManagerTask.path,
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}
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var worker = null
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try {
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var workerPath = Path.join(global.appRoot, 'server/utils/downloadWorker.js')
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worker = new workerThreads.Worker(workerPath, { workerData })
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} catch (error) {
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Logger.error(`[AbMergeManager] Start worker thread failed`, error)
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if (abManagerTask.userId) {
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var taskJson = abManagerTask.toJSON()
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this.clientEmitter(abManagerTask.userId, 'abmerge_failed', taskJson)
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}
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this.removeTask(abManagerTask)
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return
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}
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worker.on('message', (message) => {
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if (message != null && typeof message === 'object') {
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if (message.type === 'RESULT') {
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if (!abManagerTask.isTimedOut) {
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this.sendResult(abManagerTask, message)
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}
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} else if (message.type === 'FFMPEG') {
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if (Logger[message.level]) {
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Logger[message.level](message.log)
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}
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}
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} else {
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Logger.error('Invalid worker message', message)
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}
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})
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this.pendingTasks.push({
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id: abManagerTask.id,
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abManagerTask,
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worker
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})
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}
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async sendResult(abManagerTask, result) {
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abManagerTask.clearTimeoutTimer()
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// Remove pending task
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this.pendingTasks = this.pendingTasks.filter(d => d.id !== abManagerTask.id)
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if (result.isKilled) {
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if (abManagerTask.userId) {
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this.clientEmitter(abManagerTask.userId, 'abmerge_killed', abManagerTask.toJSON())
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}
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return
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}
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if (!result.success) {
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if (abManagerTask.userId) {
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this.clientEmitter(abManagerTask.userId, 'abmerge_failed', abManagerTask.toJSON())
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}
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this.removeTask(abManagerTask)
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return
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}
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// Write metadata to merged file
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const success = await toneHelpers.tagAudioFile(abManagerTask.path, abManagerTask.toneMetadataObject)
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if (!success) {
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Logger.error(`[AbMergeManager] Failed to write metadata to file "${abManagerTask.path}"`)
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if (abManagerTask.userId) {
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this.clientEmitter(abManagerTask.userId, 'abmerge_failed', abManagerTask.toJSON())
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}
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this.removeTask(abManagerTask)
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return
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}
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// Move library item tracks to cache
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const itemCacheDir = Path.join(global.MetadataPath, `cache/items/${abManagerTask.libraryItemId}`)
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await fs.ensureDir(itemCacheDir)
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for (const trackPath of abManagerTask.originalTrackPaths) {
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const trackFilename = Path.basename(trackPath)
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const moveToPath = Path.join(itemCacheDir, trackFilename)
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Logger.debug(`[AbMergeManager] Backing up original track "${trackPath}" to ${moveToPath}`)
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await fs.move(trackPath, moveToPath, { overwrite: true }).catch((err) => {
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Logger.error(`[AbMergeManager] Failed to move track "${trackPath}" to "${moveToPath}"`, err)
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})
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}
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// Set file permissions and ownership
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await filePerms.setDefault(abManagerTask.path)
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await filePerms.setDefault(itemCacheDir)
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// Move merged file to library item
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const moveToPath = Path.join(abManagerTask.libraryItemPath, abManagerTask.filename)
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Logger.debug(`[AbMergeManager] Moving merged audiobook to library item at "${moveToPath}"`)
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const moveSuccess = await fs.move(abManagerTask.path, moveToPath, { overwrite: true }).then(() => true).catch((err) => {
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Logger.error(`[AbMergeManager] Failed to move merged audiobook from "${abManagerTask.path}" to "${moveToPath}"`, err)
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return false
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})
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if (!moveSuccess) {
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// TODO: Revert cached og files?
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}
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var filesize = await getFileSize(abManagerTask.path)
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abManagerTask.setComplete(filesize)
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if (abManagerTask.userId) {
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this.clientEmitter(abManagerTask.userId, 'abmerge_ready', abManagerTask.toJSON())
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}
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// abManagerTask.setExpirationTimer(this.downloadExpired.bind(this))
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// this.tasks.push(abManagerTask)
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await this.removeTask(abManagerTask)
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Logger.info(`[AbMergeManager] Ab task finished ${abManagerTask.id}`)
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}
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// async downloadExpired(abManagerTask) {
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// Logger.info(`[AbMergeManager] Download ${abManagerTask.id} expired`)
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// if (abManagerTask.userId) {
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// this.clientEmitter(abManagerTask.userId, 'abmerge_expired', abManagerTask.toJSON())
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// }
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// this.removeTask(abManagerTask)
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// }
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async downloadTimedOut(abManagerTask) {
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Logger.info(`[AbMergeManager] Download ${abManagerTask.id} timed out (${abManagerTask.timeoutTimeMs}ms)`)
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if (abManagerTask.userId) {
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var taskJson = abManagerTask.toJSON()
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taskJson.isTimedOut = true
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this.clientEmitter(abManagerTask.userId, 'abmerge_failed', taskJson)
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}
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this.removeTask(abManagerTask)
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}
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async removeTask(abManagerTask) {
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Logger.info('[AbMergeManager] Removing task ' + abManagerTask.id)
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abManagerTask.clearTimeoutTimer()
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// abManagerTask.clearExpirationTimer()
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var pendingDl = this.pendingTasks.find(d => d.id === abManagerTask.id)
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if (pendingDl) {
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this.pendingTasks = this.pendingTasks.filter(d => d.id !== abManagerTask.id)
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Logger.warn(`[AbMergeManager] Removing download in progress - stopping worker`)
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if (pendingDl.worker) {
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try {
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pendingDl.worker.postMessage('STOP')
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} catch (error) {
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Logger.error('[AbMergeManager] Error posting stop message to worker', error)
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}
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}
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}
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await fs.remove(abManagerTask.dirpath).then(() => {
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Logger.info('[AbMergeManager] Deleted download', abManagerTask.dirpath)
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}).catch((err) => {
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Logger.error('[AbMergeManager] Failed to delete download', err)
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})
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this.tasks = this.tasks.filter(d => d.id !== abManagerTask.id)
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}
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}
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module.exports = AbMergeManager
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