How to propagate transactions via SCA binding in SwitchYard

Issue

• We have two services Hello and World. When Hello uses the UserTransaction and calls World before doing commit, an error occurs.

  @Service(HelloService.class)
  public class HelloServiceBean implements HelloService {
  
      @Reference @Inject
      private WorldService worldService;
      @Inject
      private UserTransaction utx;
  
      @Override
      public void doTest() {
          try {
              utx.begin();
              worldService.doTest();
              utx.commit();
          } catch (Exception e) {
              try {
                  if (utx.getStatus() == Status.STATUS_ACTIVE || utx.getStatus() == Status.STATUS_MARKED_ROLLBACK) {
                      utx.rollback();
                  }
              } catch (Exception e1) {
                  e1.printStackTrace();
              }
          }
      }
  }
  

• We do not want to suspend the current transaction and we are invoking the service via SCA.

• How can we propagate the transaction to the invoked service?