Have you looked at the context and authentication guide in the docs? The Context and Authentication — absinthe v1.11.0
You create a plug and call Absinthe.Plug.put_options(conn, context: context) where context has something like: {current_user: user, login_count: 9} and whatever other info you need in your resolvers for your context.
I’d recommend looking into Pow - Robust, modular, extendable user authentication and management system for the authentication if you don’t currently have anything, but plain hand-rolled cookies can be fine too, although I don’t have any guides handy for that.
Edit: sent early
