App Engine authentication to access google cloud resources

Question

1. I'm building an app using which the users registered(from the IAM page) for the project can access the resources of that project. I need the authentication when the URL is hit. Is there a way to achieve this?

2. Is it possible to provide IAM roles specific for a user request (assuming that the user will login using his email id) to access the resources based on IAM level permissions?

Answer 1

In the early days of AppEngine it was pretty easy to do some basic auth/access-control, but lately they're moving it to something called IAP.