Creating a listener for UserSessions (CUBA Studio)

Question

I am creating a project on the CUBA Studio platform (Java). I will be grateful for tips and useful links.

I have the MyUser extends User class, the field lastTimeOnline has been added. I want to implement the update of this field through the UserSession (activation and deactivation). The UserSession itself is not saved in the database.

Cuba Studio has a UserSessionListener interface that I would like to implement, but I can't figure out how to activate this listener.

Answer 1

Use Spring listeners for authentication events provided by CUBA. E.g. for tracking a successful login, implement a Spring bean:

@Component
public class LoginEventListener {

    @EventListener
    protected void onUserLoggedIn(UserLoggedInEvent event) {
        User user = event.getUserSession().getUser();
        // ...
    }
}

More info here: https://doc.cuba-platform.com/manual-7.2/login.html#login_events

Though I am not sure if corresponding event exists for session expiration.