I have a need to transfer the authentication my software received to a backend REST API.
My users are identified using Oauth 2.0 (via Keycloak) using spring security (included in spring boot 2.1.1).
The goal is to transfert that authentication to a backend REST API that will also authenticate the user. I thus need to transfert the access token to that backend.
Up until now I was able to extract the org.keycloak.representations.AccessToken from the request and was able to extract the representation of the access token.
But I am unsure how to insert into in a RestTemplate request i wish to make to the backend.
Also I'm unsure whether that approach is correct or if there is a more "spring-friendly" way :)
Thanks a lot for your help,