The default API Gateway setup don't include the raw body of a POST

• Expected behaviour:

It should be possible to use claudiajs (and caudia-api-builder) to deploy lambdas that expects the raw body of a POST request in a parameter.

• Use case:

An use case for this is the signature verification on a Facebook Messenger Bot for example, that sends a signature for the raw body + a secret in the header (see https://developers.facebook.com/docs/messenger-platform/webhook-reference#security )

• What actually happens:

The Body Mapping Template used by claudia is the one at https://github.com/claudiajs/claudia/blob/master/json-templates/apigw-params.txt that does not include the raw body, and the CLI don’t have an option to override that template with a different one.

• Workaround

Either manually add the patch on the body mapping template at AWS website:

...
  "rawBody": "$util.escapeJavaScript($input.body).replace("\'", "'")",
...

Or patch the apigw-params.txt manually.

[gojko]

I wouldn’t count on just facebook needing this, so adding rawBody for application/json in general would be my preferred option.

[fczuardi]

I’ve copy/pasted the previous test, hope it’s ok 😛