[keycloak-user] Programmatically login as a user

[valsaraj pv]

Hi,

I have web application login via Keycloak working fine. But for a
background processing like reading messages from a queue, need to login as
a dedicated queue user behind the scenes. For this we can't redirect to
login page. Earlier it was done pro grammatically  by using JAAS login
context and passing login module & credentials. Now when we switch to KC,
what is the appropriate model to do this?
Please advice!

Thanks!