import { logger } from './logger'
-import { generateVideoTmpPath } from './utils'
+import { generateVideoImportTmpPath } from './utils'
import * as WebTorrent from 'webtorrent'
-import { createWriteStream } from 'fs'
+import { createWriteStream, ensureDir, remove } from 'fs-extra'
+import { CONFIG } from '../initializers'
+import { dirname, join } from 'path'
-function downloadWebTorrentVideo (target: string) {
- const path = generateVideoTmpPath(target)
+async function downloadWebTorrentVideo (target: { magnetUri: string, torrentName?: string }, timeout: number) {
+ const id = target.magnetUri || target.torrentName
+ let timer
- logger.info('Importing torrent video %s', target)
+ const path = generateVideoImportTmpPath(id)
+ logger.info('Importing torrent video %s', id)
+
+ const directoryPath = join(CONFIG.STORAGE.TMP_DIR, 'webtorrent')
+ await ensureDir(directoryPath)
return new Promise<string>((res, rej) => {
const webtorrent = new WebTorrent()
+ let file: WebTorrent.TorrentFile
- const torrent = webtorrent.add(target, torrent => {
- if (torrent.files.length !== 1) throw new Error('The number of files is not equal to 1 for ' + target)
+ const torrentId = target.magnetUri || join(CONFIG.STORAGE.TORRENTS_DIR, target.torrentName)
- const file = torrent.files[ 0 ]
- file.createReadStream().pipe(createWriteStream(path))
- })
+ const options = { path: directoryPath }
+ const torrent = webtorrent.add(torrentId, options, torrent => {
+ if (torrent.files.length !== 1) {
+ if (timer) clearTimeout(timer)
+
+ for (let file of torrent.files) {
+ deleteDownloadedFile({ directoryPath, filepath: file.path })
+ }
+
+ return safeWebtorrentDestroy(webtorrent, torrentId, undefined, target.torrentName)
+ .then(() => rej(new Error('Cannot import torrent ' + torrentId + ': there are multiple files in it')))
+ }
+
+ file = torrent.files[ 0 ]
+
+ // FIXME: avoid creating another stream when https://github.com/webtorrent/webtorrent/issues/1517 is fixed
+ const writeStream = createWriteStream(path)
+ writeStream.on('finish', () => {
+ if (timer) clearTimeout(timer)
- torrent.on('done', () => res(path))
+ return safeWebtorrentDestroy(webtorrent, torrentId, { directoryPath, filepath: file.path }, target.torrentName)
+ .then(() => res(path))
+ })
+
+ file.createReadStream().pipe(writeStream)
+ })
torrent.on('error', err => rej(err))
+
+ timer = setTimeout(async () => {
+ return safeWebtorrentDestroy(webtorrent, torrentId, file ? { directoryPath, filepath: file.path } : undefined, target.torrentName)
+ .then(() => rej(new Error('Webtorrent download timeout.')))
+ }, timeout)
})
}
export {
downloadWebTorrentVideo
}
+
+// ---------------------------------------------------------------------------
+
+function safeWebtorrentDestroy (
+ webtorrent: WebTorrent.Instance,
+ torrentId: string,
+ downloadedFile?: { directoryPath: string, filepath: string },
+ torrentName?: string
+) {
+ return new Promise(res => {
+ webtorrent.destroy(err => {
+ // Delete torrent file
+ if (torrentName) {
+ logger.debug('Removing %s torrent after webtorrent download.', torrentId)
+ remove(torrentId)
+ .catch(err => logger.error('Cannot remove torrent %s in webtorrent download.', torrentId, { err }))
+ }
+
+ // Delete downloaded file
+ if (downloadedFile) deleteDownloadedFile(downloadedFile)
+
+ if (err) logger.warn('Cannot destroy webtorrent in timeout.', { err })
+
+ return res()
+ })
+ })
+}
+
+function deleteDownloadedFile (downloadedFile: { directoryPath: string, filepath: string }) {
+ // We want to delete the base directory
+ let pathToDelete = dirname(downloadedFile.filepath)
+ if (pathToDelete === '.') pathToDelete = downloadedFile.filepath
+
+ const toRemovePath = join(downloadedFile.directoryPath, pathToDelete)
+
+ logger.debug('Removing %s after webtorrent download.', toRemovePath)
+ remove(toRemovePath)
+ .catch(err => logger.error('Cannot remove torrent file %s in webtorrent download.', toRemovePath, { err }))
+}