How to access HTTP headers for request to AWS API Gateway using Lambda?

Question

I see in the API Gateway FAQ that it is possible to access the request headers sent to the API Gateway...

If you already utilize OAuth tokens or any o

Answer 1

You need to create input mapping inside Integration Request panel on the dashboard screen describing your API method.

Following code translates name query input parameter into Lambda Event input object:

{
   "name": "$input.params('name')"
}

Screenshot:

You can find more info about this in the original API Gateway to Lambda input thread on AWS Forums.