Dear Dev Team,
In a new project I use the API GW HTTP the first time. During implementation of the authorizer I noticed that, APIGatewayV2HTTPRequest in events/apigw.go has no field for "RouteARN" (which is the replacement for "methodARN" from V1). This is required to be able to respond with a policy as the ARN is required in the resource field.
As reference that this field exists, here the official documentation:
https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api-lambda-authorizer.html
Please add the field to the event. THX :)