const logger = require('logger-sharelatex') const Settings = require('@overleaf/settings') const fs = require('fs') const Path = require('path') const { promisify } = require('util') const disrequire = require('disrequire') const AWS = require('aws-sdk') logger.logger.level('info') const fsReaddir = promisify(fs.readdir) const sleep = promisify(setTimeout) class FilestoreApp { constructor() { this.running = false this.initing = false } async runServer() { if (this.running) { return } if (this.initing) { return this.waitForInit() } this.initing = true this.app = await FilestoreApp.requireApp() await new Promise((resolve, reject) => { this.server = this.app.listen( Settings.internal.filestore.port, 'localhost', (err) => { if (err) { return reject(err) } resolve() } ) }) if (Settings.filestore.backend === 's3') { try { await FilestoreApp.waitForS3() } catch (err) { await this.stop() throw err } } this.initing = false this.persistor = require('../../../app/js/PersistorManager') } async waitForInit() { while (this.initing) { await sleep(1000) } } async stop() { if (!this.server) return const closeServer = promisify(this.server.close).bind(this.server) try { await closeServer() } finally { delete this.server } } static async waitForS3() { let tries = 0 if (!Settings.filestore.s3.endpoint) { return } const s3 = new AWS.S3({ accessKeyId: Settings.filestore.s3.key, secretAccessKey: Settings.filestore.s3.secret, endpoint: Settings.filestore.s3.endpoint, s3ForcePathStyle: true, signatureVersion: 'v4' }) while (true) { try { return await s3 .putObject({ Key: 'startup', Body: '42', Bucket: Settings.filestore.stores.user_files }) .promise() } catch (err) { // swallow errors, as we may experience them until fake-s3 is running if (tries === 9) { // throw just before hitting the 10s test timeout throw err } tries++ await sleep(1000) } } } static async requireApp() { // unload the app, as we may be doing this on multiple runs with // different settings, which affect startup in some cases const files = await fsReaddir(Path.resolve(__dirname, '../../../app/js')) files.forEach((file) => { disrequire(Path.resolve(__dirname, '../../../app/js', file)) }) disrequire(Path.resolve(__dirname, '../../../app')) disrequire('@overleaf/object-persistor') return require('../../../app') } } module.exports = FilestoreApp