public Task Handle(string requestId, dynamic vm, RouteData routeData, HttpRequest request)
{
/*
* In a production environment if multiple services are interested in the
* same post request the handling logic is much more complex than what we
* are doing in this demo. In this demo both Finance and Reservations need
* to handle the POST to /reservations/checkout. The implementation assumes
* that the host/infrastructure never fails, which is not the case in a
* production environment. In order to make this part safe, which is not the
* scope of this demo asynchronous messaging should be introduced earlier in
* the processing pipeline.
*
* More information: https://milestone.topics.it/2019/05/02/safety-first.html
*/
var message = new InitializeReservationShippingPolicy()
{
ReservationId = new Guid(request.Cookies["reservation-id"]),
DeliveryOption = (DeliveryOptions)Enum.Parse(typeof(DeliveryOptions), request.Cookies["reservation-delivery-option-id"])
};
/*
* WARN: destination is hard-coded to reduce demo complexity.
* In a production environment routing should be configured
* at startup by the host/infrastructure.
*/
return(messageSession.Send("Shipping.Service", message));
}
public Task Handle(InitializeReservationShippingPolicy message, IMessageHandlerContext context)
{
Console.WriteLine($"DeliveryOption {message.DeliveryOption} set for reservation '{message.ReservationId}'. Verifying if shipment can started...", Color.Green);
Data.DeliveryOption = message.DeliveryOption;
Data.DeliveryOptionDefined = true;
return(StartShipmentProcessIfEverythingIsOk(context));
}
