Turns out this is not needed. https://arc.codes/primitives/http#req

You can access the raw body like this

module.exports = async http(event, context) {
  const rawBody = event.body
}

arc-http-raw-body

A plugin for @architect/architect that makes configured endpoints include an unparsed raw request body object as base64.

This is particularly useful when integrating with services that provide signed payloads that need verification. For example, Stripe Webhooks.

Installation

npm install zibasec/arc-http-raw-body

Usage

You'll first need to install macro-custom-pragma-runner

Then use this pragma in your .arc file. Example...

@app
myApp

@http
post /hook

@macros
macro-custom-pragma-runner

@_zibasec/arc-http-raw-body
post /hook

@aws
region us-east-1

The values supplied under @_zibasec/arc-http-raw-body must have a match under @http.

You can access the base64 encoded object via event.raw...

exports.handler = async (event, context) => {
  // this decodes the b64 into a buffer
  const rawBodyAsBuffer = (new Buffer(event.raw, 'base64'))
  return {}
}

What does it do, exactly?

Under the covers this will add an API Gateway Mapping Template to your function and changes its integration type in order to all for the mapping.

License

MIT