Quarkus & MicroProfile Umsetzung im Praxisprojekt

@Path("/orders")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public class QuarkusOrderResource { // Pattern: Inbound Adapter
    private final PlaceOrderUseCase placeOrder;

    public QuarkusOrderResource(PlaceOrderUseCase placeOrder) {
        this.placeOrder = placeOrder;
    }

    @POST
    public Response place(PlaceOrderRequest request) {
        OrderId id = placeOrder.handle(request.toCommand());
        return Response.accepted(new OrderResponse(id.value(), "ACCEPTED")).build();
    }
}

@ApplicationScoped
class InventoryClient implements InventoryPort { // Pattern: Adapter
    @Timeout(750)
    @Retry(maxRetries = 2)
    @CircuitBreaker(requestVolumeThreshold = 20, failureRatio = 0.5)
    public void reserve(CustomerId customerId, List<OrderLine> lines) {
        // HTTP call zum Inventory-System
    }
}