PaymentEventHandler

.java

public TransactionEvent handleEvent(PaymentEvent event) {
        Mono.fromRunnable(() -> transactionRepository.save(
                new Transaction()
                        .setOrderId(event.getOrderId())
                        .setPrice(event.getPrice())))
                .subscribeOn(jdbcScheduler)
                .subscribe();

        return new TransactionEvent()
                .orderId(event.getOrderId())
                .status(() -> APPROVED.equals(event.getStatus())
                        ? SUCCESSFUL
                        : UNSUCCESSFUL);

    }