328 lines
11 KiB
JavaScript
328 lines
11 KiB
JavaScript
const Path = require('path')
|
|
const Logger = require('../Logger')
|
|
const SocketAuthority = require('../SocketAuthority')
|
|
|
|
const cron = require('../libs/nodeCron')
|
|
const fs = require('../libs/fsExtra')
|
|
const archiver = require('../libs/archiver')
|
|
const StreamZip = require('../libs/nodeStreamZip')
|
|
|
|
// Utils
|
|
const { getFileSize } = require('../utils/fileUtils')
|
|
const filePerms = require('../utils/filePerms')
|
|
|
|
const Backup = require('../objects/Backup')
|
|
|
|
class BackupManager {
|
|
constructor(db) {
|
|
this.BackupPath = Path.join(global.MetadataPath, 'backups')
|
|
this.ItemsMetadataPath = Path.join(global.MetadataPath, 'items')
|
|
this.AuthorsMetadataPath = Path.join(global.MetadataPath, 'authors')
|
|
|
|
this.db = db
|
|
|
|
this.scheduleTask = null
|
|
|
|
this.backups = []
|
|
}
|
|
|
|
get serverSettings() {
|
|
return this.db.serverSettings || {}
|
|
}
|
|
|
|
async init() {
|
|
var backupsDirExists = await fs.pathExists(this.BackupPath)
|
|
if (!backupsDirExists) {
|
|
await fs.ensureDir(this.BackupPath)
|
|
await filePerms.setDefault(this.BackupPath)
|
|
}
|
|
|
|
await this.loadBackups()
|
|
this.scheduleCron()
|
|
}
|
|
|
|
scheduleCron() {
|
|
if (!this.serverSettings.backupSchedule) {
|
|
Logger.info(`[BackupManager] Auto Backups are disabled`)
|
|
return
|
|
}
|
|
try {
|
|
var cronSchedule = this.serverSettings.backupSchedule
|
|
this.scheduleTask = cron.schedule(cronSchedule, this.runBackup.bind(this))
|
|
} catch (error) {
|
|
Logger.error(`[BackupManager] Failed to schedule backup cron ${this.serverSettings.backupSchedule}`, error)
|
|
}
|
|
}
|
|
|
|
updateCronSchedule() {
|
|
if (this.scheduleTask && !this.serverSettings.backupSchedule) {
|
|
Logger.info(`[BackupManager] Disabling backup schedule`)
|
|
if (this.scheduleTask.stop) this.scheduleTask.stop()
|
|
this.scheduleTask = null
|
|
} else if (!this.scheduleTask && this.serverSettings.backupSchedule) {
|
|
Logger.info(`[BackupManager] Starting backup schedule ${this.serverSettings.backupSchedule}`)
|
|
this.scheduleCron()
|
|
} else if (this.serverSettings.backupSchedule) {
|
|
Logger.info(`[BackupManager] Restarting backup schedule ${this.serverSettings.backupSchedule}`)
|
|
if (this.scheduleTask.stop) this.scheduleTask.stop()
|
|
this.scheduleCron()
|
|
}
|
|
}
|
|
|
|
async uploadBackup(req, res) {
|
|
var backupFile = req.files.file
|
|
if (Path.extname(backupFile.name) !== '.audiobookshelf') {
|
|
Logger.error(`[BackupManager] Invalid backup file uploaded "${backupFile.name}"`)
|
|
return res.status(500).send('Invalid backup file')
|
|
}
|
|
|
|
var tempPath = Path.join(this.BackupPath, backupFile.name)
|
|
var success = await backupFile.mv(tempPath).then(() => true).catch((error) => {
|
|
Logger.error('[BackupManager] Failed to move backup file', path, error)
|
|
return false
|
|
})
|
|
if (!success) {
|
|
return res.status(500).send('Failed to move backup file into backups directory')
|
|
}
|
|
|
|
const zip = new StreamZip.async({ file: tempPath })
|
|
const data = await zip.entryData('details')
|
|
var details = data.toString('utf8').split('\n')
|
|
|
|
var backup = new Backup({ details, fullPath: tempPath })
|
|
|
|
if (!backup.serverVersion) {
|
|
Logger.error(`[BackupManager] Invalid backup with no server version - might be a backup created before version 2.0.0`)
|
|
return res.status(500).send('Invalid backup. Might be a backup created before version 2.0.0.')
|
|
}
|
|
|
|
backup.fileSize = await getFileSize(backup.fullPath)
|
|
|
|
var existingBackupIndex = this.backups.findIndex(b => b.id === backup.id)
|
|
if (existingBackupIndex >= 0) {
|
|
Logger.warn(`[BackupManager] Backup already exists with id ${backup.id} - overwriting`)
|
|
this.backups.splice(existingBackupIndex, 1, backup)
|
|
} else {
|
|
this.backups.push(backup)
|
|
}
|
|
|
|
res.json({
|
|
backups: this.backups.map(b => b.toJSON())
|
|
})
|
|
}
|
|
|
|
async requestCreateBackup(res) {
|
|
var backupSuccess = await this.runBackup()
|
|
if (backupSuccess) {
|
|
res.json({
|
|
backups: this.backups.map(b => b.toJSON())
|
|
})
|
|
} else {
|
|
res.sendStatus(500)
|
|
}
|
|
}
|
|
|
|
async requestApplyBackup(backup) {
|
|
const zip = new StreamZip.async({ file: backup.fullPath })
|
|
await zip.extract('config/', global.ConfigPath)
|
|
if (backup.backupMetadataCovers) {
|
|
await zip.extract('metadata-items/', this.ItemsMetadataPath)
|
|
await zip.extract('metadata-authors/', this.AuthorsMetadataPath)
|
|
}
|
|
await this.db.reinit()
|
|
SocketAuthority.emitter('backup_applied')
|
|
}
|
|
|
|
async loadBackups() {
|
|
try {
|
|
var filesInDir = await fs.readdir(this.BackupPath)
|
|
for (let i = 0; i < filesInDir.length; i++) {
|
|
var filename = filesInDir[i]
|
|
if (filename.endsWith('.audiobookshelf')) {
|
|
var fullFilePath = Path.join(this.BackupPath, filename)
|
|
|
|
let zip = null
|
|
let data = null
|
|
try {
|
|
zip = new StreamZip.async({ file: fullFilePath })
|
|
data = await zip.entryData('details')
|
|
} catch (error) {
|
|
if (error.message === "Bad archive") {
|
|
Logger.warn(`[BackupManager] Backup appears to be corrupted: ${fullFilePath}`)
|
|
continue;
|
|
} else if (error.message === "unexpected end of file") {
|
|
Logger.warn(`[BackupManager] Backup appears to be corrupted: ${fullFilePath}`)
|
|
continue;
|
|
} else {
|
|
throw error
|
|
}
|
|
}
|
|
|
|
var details = data.toString('utf8').split('\n')
|
|
|
|
var backup = new Backup({ details, fullPath: fullFilePath })
|
|
|
|
if (!backup.serverVersion) {
|
|
Logger.error(`[BackupManager] Old unsupported backup was found "${backup.fullPath}"`)
|
|
}
|
|
|
|
backup.fileSize = await getFileSize(backup.fullPath)
|
|
var existingBackupWithId = this.backups.find(b => b.id === backup.id)
|
|
if (existingBackupWithId) {
|
|
Logger.warn(`[BackupManager] Backup already loaded with id ${backup.id} - ignoring`)
|
|
} else {
|
|
this.backups.push(backup)
|
|
}
|
|
|
|
Logger.debug(`[BackupManager] Backup found "${backup.id}"`)
|
|
zip.close()
|
|
}
|
|
}
|
|
Logger.info(`[BackupManager] ${this.backups.length} Backups Found`)
|
|
} catch (error) {
|
|
Logger.error('[BackupManager] Failed to load backups', error)
|
|
}
|
|
}
|
|
|
|
async runBackup() {
|
|
// Check if Metadata Path is inside Config Path (otherwise there will be an infinite loop as the archiver tries to zip itself)
|
|
Logger.info(`[BackupManager] Running Backup`)
|
|
var newBackup = new Backup()
|
|
|
|
const newBackData = {
|
|
backupMetadataCovers: this.serverSettings.backupMetadataCovers,
|
|
backupDirPath: this.BackupPath
|
|
}
|
|
newBackup.setData(newBackData)
|
|
|
|
var metadataAuthorsPath = this.AuthorsMetadataPath
|
|
if (!await fs.pathExists(metadataAuthorsPath)) metadataAuthorsPath = null
|
|
|
|
var zipResult = await this.zipBackup(metadataAuthorsPath, newBackup).then(() => true).catch((error) => {
|
|
Logger.error(`[BackupManager] Backup Failed ${error}`)
|
|
return false
|
|
})
|
|
if (zipResult) {
|
|
Logger.info(`[BackupManager] Backup successful ${newBackup.id}`)
|
|
await filePerms.setDefault(newBackup.fullPath)
|
|
newBackup.fileSize = await getFileSize(newBackup.fullPath)
|
|
var existingIndex = this.backups.findIndex(b => b.id === newBackup.id)
|
|
if (existingIndex >= 0) {
|
|
this.backups.splice(existingIndex, 1, newBackup)
|
|
} else {
|
|
this.backups.push(newBackup)
|
|
}
|
|
|
|
// Check remove oldest backup
|
|
if (this.backups.length > this.serverSettings.backupsToKeep) {
|
|
this.backups.sort((a, b) => a.createdAt - b.createdAt)
|
|
|
|
var oldBackup = this.backups.shift()
|
|
Logger.debug(`[BackupManager] Removing old backup ${oldBackup.id}`)
|
|
this.removeBackup(oldBackup)
|
|
}
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
async removeBackup(backup) {
|
|
try {
|
|
Logger.debug(`[BackupManager] Removing Backup "${backup.fullPath}"`)
|
|
await fs.remove(backup.fullPath)
|
|
this.backups = this.backups.filter(b => b.id !== backup.id)
|
|
Logger.info(`[BackupManager] Backup "${backup.id}" Removed`)
|
|
} catch (error) {
|
|
Logger.error(`[BackupManager] Failed to remove backup`, error)
|
|
}
|
|
}
|
|
|
|
zipBackup(metadataAuthorsPath, backup) {
|
|
return new Promise((resolve, reject) => {
|
|
// create a file to stream archive data to
|
|
const output = fs.createWriteStream(backup.fullPath)
|
|
const archive = archiver('zip', {
|
|
zlib: { level: 9 } // Sets the compression level.
|
|
})
|
|
|
|
// listen for all archive data to be written
|
|
// 'close' event is fired only when a file descriptor is involved
|
|
output.on('close', () => {
|
|
Logger.info('[BackupManager]', archive.pointer() + ' total bytes')
|
|
resolve()
|
|
})
|
|
|
|
// This event is fired when the data source is drained no matter what was the data source.
|
|
// It is not part of this library but rather from the NodeJS Stream API.
|
|
// @see: https://nodejs.org/api/stream.html#stream_event_end
|
|
output.on('end', () => {
|
|
Logger.debug('Data has been drained')
|
|
})
|
|
|
|
output.on('finish', () => {
|
|
Logger.debug('Write Stream Finished')
|
|
})
|
|
|
|
output.on('error', (err) => {
|
|
Logger.debug('Write Stream Error', err)
|
|
reject(err)
|
|
})
|
|
|
|
// good practice to catch warnings (ie stat failures and other non-blocking errors)
|
|
archive.on('warning', function (err) {
|
|
if (err.code === 'ENOENT') {
|
|
// log warning
|
|
Logger.warn(`[BackupManager] Archiver warning: ${err.message}`)
|
|
} else {
|
|
// throw error
|
|
Logger.error(`[BackupManager] Archiver error: ${err.message}`)
|
|
// throw err
|
|
reject(err)
|
|
}
|
|
})
|
|
archive.on('error', function (err) {
|
|
Logger.error(`[BackupManager] Archiver error: ${err.message}`)
|
|
reject(err)
|
|
})
|
|
archive.on('progress', ({ fs: fsobj }) => {
|
|
const maxBackupSizeInBytes = this.serverSettings.maxBackupSize * 1000 * 1000 * 1000
|
|
if (fsobj.processedBytes > maxBackupSizeInBytes) {
|
|
Logger.error(`[BackupManager] Archiver is too large - aborting to prevent endless loop, Bytes Processed: ${fsobj.processedBytes}`)
|
|
archive.abort()
|
|
setTimeout(() => {
|
|
this.removeBackup(backup)
|
|
output.destroy('Backup too large') // Promise is reject in write stream error evt
|
|
}, 500)
|
|
}
|
|
})
|
|
|
|
// pipe archive data to the file
|
|
archive.pipe(output)
|
|
|
|
archive.directory(this.db.LibraryItemsPath, 'config/libraryItems')
|
|
archive.directory(this.db.UsersPath, 'config/users')
|
|
archive.directory(this.db.SessionsPath, 'config/sessions')
|
|
archive.directory(this.db.LibrariesPath, 'config/libraries')
|
|
archive.directory(this.db.SettingsPath, 'config/settings')
|
|
archive.directory(this.db.CollectionsPath, 'config/collections')
|
|
archive.directory(this.db.AuthorsPath, 'config/authors')
|
|
archive.directory(this.db.SeriesPath, 'config/series')
|
|
|
|
if (this.serverSettings.backupMetadataCovers) {
|
|
Logger.debug(`[BackupManager] Backing up Metadata Items "${this.ItemsMetadataPath}"`)
|
|
archive.directory(this.ItemsMetadataPath, 'metadata-items')
|
|
|
|
if (metadataAuthorsPath) {
|
|
Logger.debug(`[BackupManager] Backing up Metadata Authors "${metadataAuthorsPath}"`)
|
|
archive.directory(metadataAuthorsPath, 'metadata-authors')
|
|
}
|
|
}
|
|
|
|
archive.append(backup.detailsString, { name: 'details' })
|
|
|
|
archive.finalize()
|
|
})
|
|
}
|
|
}
|
|
module.exports = BackupManager |