Получение текущего пользователя биллинга

import java.security.AccessController;
import javax.security.auth.Subject;
import bitel.billing.server.admin.bean.User;
import bitel.billing.server.admin.bgsecure.bean.UserLoginModule.UserPrincipal;
 
public User getCurrentUser()
{
   Subject subject = Subject.getSubject( AccessController.getContext() );
   if( subject != null )
   {
      for( UserPrincipal userPrincipal : subject.getPrincipals( UserPrincipal.class ) )
      {
         return userPrincipal.getUser();
      }
   }
 
   return null;
}
 
public Integer getCurrentUserId()
{
   Subject subject = Subject.getSubject( AccessController.getContext() );
   if( subject != null )
   {
      for( UserPrincipal userPrincipal : subject.getPrincipals( UserPrincipal.class ) )
      {
         return userPrincipal.getUser().getID();
      }
   }
 
   return null;
}