question: how to get raw request body

I’m adding a Stripe webhook and I need to get raw request body, like:

app.post('/webhook', bodyParser.raw({type: 'application/json'}), (request, response) => {}

https://stripe.com/docs/webhooks/signatures#verify-official-libraries

How I can get it using routing-controller?

[Aitchy13]

Spent all afternoon trying to figure this out too, but I have a solution:

Add the following middleware:

// RawBodyMiddleware.ts
import { Request, Response } from 'express';

const RawBodyMiddleware = (req: Request, res: Response, next: () => void) => {
  const body = []
  req.on('data', chunk => {
    body.push(chunk)
  })
  req.on('end', () => {
    const rawBody = Buffer.concat(body)
    req['rawBody'] = rawBody
    switch (req.header('content-type')) {
      case 'application/json':
        req.body = JSON.parse(rawBody.toString())
        break
      // add more body parsing if needs be
      default:
    }
    next()
  })
  req.on('error', () => {
    res.sendStatus(400)
  })
}

export default RawBodyMiddleware

In your controller, add the middleware to the endpoint that requires a raw body and access the raw body property from the request using the @Req() decorator:

import { Request, Response } from 'express';
import { Req, UseBefore } from 'routing-controllers';
import RawBodyMiddleware from '../middlewares/RawBodyMiddleware'

@Post('/myendpoint')
@UseBefore(RawBodyMiddleware)
public myEndpoint(@Req() request: Request) {
   const rawBody = request.rawBody
   const asString = rawBody.toString()

   const jsonBody = request.body
}

Hope that helps!

[JClackett]

I tried the solution above, but stripe wasn’t liking the rawBody buffer, just passing the bodyparser.raw function into the UseBefore decorator seems to work for me!

@Service()
@JsonController("/stripe")
export class StripeController {
  @HttpCode(200)
  @Post("/webhook")
  @UseBefore(raw({ type: "application/json" }))
  async stripe(@Req() request: Request, @HeaderParam("stripe-signature") signature: string) {
    let event: Stripe.Event
    if (!request.body) return false
    try {
      event = stripe.webhooks.constructEvent(request.body, signature, STRIPE_WEBHOOK_SECRET)
    } catch (err) {
      console.log("oops", err)
      return false
    }
   // do stuff with event
    }
}