PeerTube/server/core/middlewares/async.ts

49 lines
1.5 KiB
TypeScript

import { NextFunction, Request, RequestHandler, Response } from 'express'
import { ValidationChain } from 'express-validator'
import { ExpressPromiseHandler } from '@server/types/express-handler.js'
import { retryTransactionWrapper } from '../helpers/database-utils.js'
// Syntactic sugar to avoid try/catch in express controllers/middlewares
export type RequestPromiseHandler = ValidationChain | ExpressPromiseHandler
function asyncMiddleware (fun: RequestPromiseHandler | RequestPromiseHandler[]) {
return async (req: Request, res: Response, next: NextFunction) => {
if (Array.isArray(fun) !== true) {
return Promise.resolve((fun as RequestHandler)(req, res, next))
.catch(err => next(err))
}
try {
for (const f of (fun as RequestPromiseHandler[])) {
await new Promise<void>((resolve, reject) => {
return asyncMiddleware(f)(req, res, err => {
if (err) return reject(err)
return resolve()
})
})
}
next()
} catch (err) {
next(err)
}
}
}
function asyncRetryTransactionMiddleware (fun: (req: Request, res: Response, next: NextFunction) => Promise<any>) {
return (req: Request, res: Response, next: NextFunction) => {
return Promise.resolve(
retryTransactionWrapper(fun, req, res, next)
).catch(err => next(err))
}
}
// ---------------------------------------------------------------------------
export {
asyncMiddleware,
asyncRetryTransactionMiddleware
}