public void Handle(OrderPlaced message)
{
if (this.State == ProcessState.NotStarted)
{
this.WorkshopID = message.WorkshopId;
this.OrderID = message.SourceId;
// Use the order id as an opaque reservation id for the anchor reservation.
// It could be anything else, as long as it is deterministic from the OrderPlaced event.
this.ReservationID = message.SourceId;
this.ReservationAutoExpiration = message.ReservationAutoExpiration;
var expirationWindow = message.ReservationAutoExpiration.Subtract(DateTime.UtcNow);
if (expirationWindow > TimeSpan.Zero)
{
this.State = ProcessState.AwaitingReservationConfirmation;
var anchorReservationCommand =
new MakeAnchorReservation
{
WorkshopID = this.WorkshopID,
ReservationId = this.ReservationID,
Anchors = message.Anchors.ToList()
};
this.AnchorReservationCommandID = anchorReservationCommand.Id;
this.AddCommand(new Envelope <ICommand>(anchorReservationCommand)
{
TimeToLive = expirationWindow.Add(TimeSpan.FromMinutes(1)),
});
var expirationCommand = new ExpireRegistrationProcess {
ProcessId = this.ID
};
this.ExpirationCommandId = expirationCommand.Id;
this.AddCommand(new Envelope <ICommand>(expirationCommand)
{
Delay = expirationWindow.Add(BufferTimeBeforeReleasingAnchorsAfterExpiration),
});
}
else
{
AddCommand(new RejectOrder {
OrderId = this.OrderID
});
Completed = true;
}
}
else
{
if (message.WorkshopId != this.WorkshopID)
{
// throw only if not reprocessing
throw new InvalidOperationException();
}
}
}
public void Handle(OrderUpdated message)
{
if (this.State == ProcessState.AwaitingReservationConfirmation ||
this.State == ProcessState.ReservationConfirmationReceived)
{
this.State = ProcessState.AwaitingReservationConfirmation;
var anchorReservationCommand =
new MakeAnchorReservation
{
WorkshopID = this.WorkshopID,
ReservationId = this.ReservationID,
Anchors = message.Anchors.ToList()
};
this.AnchorReservationCommandID = anchorReservationCommand.Id;
this.AddCommand(anchorReservationCommand);
}
else
{
throw new InvalidOperationException("The order cannot be updated at this stage.");
}
}
