private void BL_InitSeats()
{
var queue = new MessageQueue(_queueName){
Formatter = new XmlMessageFormatter(new[] { typeof(Seat) })
};
if (!MessageQueue.Exists(_queueName))
{
using (queue = MessageQueue.Create(_queueName))
{
queue.Label = "CinemaSeats";
}
}
Task.Factory.StartNew(() => PeekMessages(queue))
.ContinueWith(x =>
{
var enumerable = x.Result;
var seats = enumerable as IList<LabelIdMapping> ?? enumerable.ToList();
var dbTickets = GetSqlTickets();
if (seats.Count == 0 && dbTickets.Count == 0)
{
UI_InitSeats();
return;
}
//deserialize messsages
var messages = seats.Select(labelIdMapping => queue.PeekById(labelIdMapping.Id).Body as Seat).ToList();
for (var i = 0; i < 30; i++)
{
for (var j = 0; j < 40; j++)
{
var bookedSeat = messages.FirstOrDefault(n => n.Number == j && n.Row == i)
?? dbTickets.FirstOrDefault(n => n.Number == j && n.Row == i)
?? new Seat();
//TODO: change to dynamic BookingState
bookedSeat.ViewModel = DrawSeat(bookedSeat.BookingState);
canvas.Children.Add(bookedSeat.ViewModel);
Canvas.SetTop(bookedSeat.ViewModel, i*10);
Canvas.SetLeft(bookedSeat.ViewModel, j*10);
_room[i, j] = bookedSeat;
}
}
}, TaskScheduler.FromCurrentSynchronizationContext());
}
public MessageDetailsModel(string messageId, string queuePath)
{
var additionalDetails = new List<MessageDetail>();
using (var messageQueue = new MessageQueue(queuePath))
{
messageQueue.MessageReadPropertyFilter.ClearAll();
messageQueue.MessageReadPropertyFilter.Body = true;
foreach (IMessageExtension messageExtension in MessageExtensions.GetMessageExtensions())
{
messageExtension.CustomizeMessagePropertyFilter(messageQueue.MessageReadPropertyFilter);
}
try
{
using (var message = messageQueue.PeekById(messageId))
{
this.Body = new StreamReader(message.BodyStream).ReadToEnd();
foreach (IMessageExtension messageExtension in MessageExtensions.GetMessageExtensions())
{
additionalDetails.AddRange(messageExtension.GetMessageDetails(message));
}
}
}
catch (InvalidOperationException ex)
{
this.Body = "No message with the id " + messageId + " exists. Probably it was consumed few moments ago.\n"
+ "Exception details: " + ex.ToString();
}
catch (Exception ex)
{
this.Body = "Could not read details of message with id " + messageId + ".\n"
+ "Exception details: " + ex.ToString();
}
this.AdditionalDetails = additionalDetails;
}
}
private void RefreshSeats()
{
while (true)
{
var seats = GetSqlTickets();
var seatsCancelledByAdmin = new List<Seat>();
foreach (var seat in seats)
{
var ticket = _room[seat.Row, seat.Number];
if (ticket == null)
continue;
if (ticket.BookingState == seat.BookingState)
continue;
ticket.BookingState = seat.BookingState;
if (seat.BookingState == BookingState.Cancelled)
{
seatsCancelledByAdmin.Add(seat);
}
Dispatcher.Invoke(() =>
{
ticket.ViewModel.Fill = UpdateState(seat.BookingState);
});
}
var queue1 = new MessageQueue(_queueName) { Formatter = new XmlMessageFormatter(new[] { typeof(Seat) }) };
var messages = PeekMessages(queue1);
//var pendingApprovalMsgs = messages.Where(labelIdMapping => queue1.Peek(TimeSpan.FromMilliseconds(1)) != null)
// .Select(x => (x.Body) as Seat).ToList();
foreach (var message in messages)
{
Seat msg = null;
try
{
msg = queue1.PeekById(message.Id).Body as Seat;
}
catch (InvalidOperationException ex)
{
_seats = new List<LabelIdMapping>();
continue;
}
var ticket = _room[msg.Row, msg.Number];
if (ticket == null)
continue;
if (ticket.BookingState == msg.BookingState)
continue;
ticket.BookingState = msg.BookingState;
if (msg.BookingState == BookingState.Cancelled)
{
seatsCancelledByAdmin.Add(msg);
}
Dispatcher.Invoke(() =>
{
ticket.ViewModel.Fill = UpdateState(msg.BookingState);
});
}
foreach (var cancelledSeat in _seatsCancelledByClient)
{
if (!seats.Contains(cancelledSeat))
{
var ticket = _room[cancelledSeat.Row, cancelledSeat.Number];
ticket.BookingState = BookingState.Free;
Dispatcher.Invoke(() =>
{
ticket.ViewModel.Fill = UpdateState(ticket.BookingState);
});
}
}
_seatsCancelledByClient.Clear();
Thread.Sleep(1000);
foreach (var cancelledSeat in seatsCancelledByAdmin)
{
var queue = new MessageQueue(_queueName);
if (seats.Contains(cancelledSeat))
{
var ticket = _room[cancelledSeat.Row, cancelledSeat.Number];
ticket.BookingState = BookingState.Free;
queue.Send(cancelledSeat);
Dispatcher.Invoke(() =>
{
ticket.ViewModel.Fill = UpdateState(ticket.BookingState);
});
}
}
seatsCancelledByAdmin.Clear();
}
}
public Message GetFullMessage(MessageQueue messageQueue, string messageId)
{
messageQueue.MessageReadPropertyFilter.SetAll();
messageQueue.MessageReadPropertyFilter.SourceMachine = true;
return messageQueue.PeekById(messageId);
}