PeerTube/server/core/lib/files-cache/shared/abstract-simple-file-cache.ts

31 lines
1.1 KiB
TypeScript

import { remove } from 'fs-extra/esm'
import { logger } from '../../../helpers/logger.js'
import memoizee from 'memoizee'
type GetFilePathResult = { isOwned: boolean, path: string, downloadName?: string } | undefined
export abstract class AbstractSimpleFileCache <T> {
getFilePath: (params: T) => Promise<GetFilePathResult>
abstract getFilePathImpl (params: T): Promise<GetFilePathResult>
// Load and save the remote file, then return the local path from filesystem
protected abstract loadRemoteFile (key: string): Promise<GetFilePathResult>
init (max: number, maxAge: number) {
this.getFilePath = memoizee(this.getFilePathImpl.bind(this), {
maxAge,
max,
promise: true,
dispose: (result?: GetFilePathResult) => {
if (result && result.isOwned !== true) {
remove(result.path)
.then(() => logger.debug('%s removed from %s', result.path, this.constructor.name))
.catch(err => logger.error('Cannot remove %s from cache %s.', result.path, this.constructor.name, { err }))
}
}
})
}
}