public IHttpActionResult PutPurchaseTicket(int id, PurchaseTicket purchaseTicket)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != purchaseTicket.Id)
{
return(BadRequest());
}
db.Entry(purchaseTicket).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!PurchaseTicketExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
public IHttpActionResult PostPurchaseTicket(PurchaseTicket purchaseTicket)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
db.PurchaseTickets.Add(purchaseTicket);
db.SaveChanges();
return(CreatedAtRoute("DefaultApi", new { id = purchaseTicket.Id }, purchaseTicket));
}
public IHttpActionResult DeletePurchaseTicket(int id)
{
PurchaseTicket purchaseTicket = db.PurchaseTickets.Find(id);
if (purchaseTicket == null)
{
return(NotFound());
}
db.PurchaseTickets.Remove(purchaseTicket);
db.SaveChanges();
return(Ok(purchaseTicket));
}
private void btnPurchaseTicket_Click(object sender, EventArgs e)
{
foreach (Form c in this.ParentForm.MdiChildren)
{
if (c.GetType() == new PurchaseTicket().GetType())
{
pt = true;
}
}
if (!pt)
{
PurchaseTicket purchaseTicket = new PurchaseTicket();
purchaseTicket.MdiParent = this.ParentForm;
purchaseTicket.Show();
}
}
public async Task Handle(ConsumeContext <PurchaseTicket> context)
{
PurchaseTicket message = context.Message;
var units = message.order.quantity == 1 ? "ticket" : "tickets";
Console.WriteLine($"Handling purchase for {message.order.quantity} {units}");
// Consume the offer only once (Idempotent)
bool offerHasBeenConsumed = await HasOfferBeenConsumed(message.offer.offerGuid);
if (offerHasBeenConsumed)
{
Console.WriteLine("Already consumed");
return;
}
// Validate the request
if (message.order.quantity > message.offer.maximumQuantity ||
message.order.quantity < message.offer.minimumQuantity)
{
Console.WriteLine("Invalid request");
throw new InvalidOperationException("Order quantity is out of range");
}
// Test invariants
int quantityRemaining = 3;
if (message.order.quantity > quantityRemaining)
{
Console.WriteLine("Invariant violated");
await context.Publish(new PurchaseTicketFailed
{
failureReason = FailureReasons.SoldOut,
offer = message.offer,
order = message.order
});
}
}
public async Task <IActionResult> Purchase([FromBody] PurchaseTicket command)
{
await ticketService.PurchaseAsync(UserId(), command.EventId, command.Amount);
return(NoContent());
}
