public QueuedDeliveryCore(IMessageDeliveryQueue deliveryQueue, IMessageDeliveryQueue failureQueue)
{
_transactional = deliveryQueue.IsTransactional && failureQueue.IsTransactional;
if (!_transactional)
{
throw new InvalidOperationException("Only transactional queues are allowed");
}
_messageDeliveryQueue = deliveryQueue;
_failureQueue = failureQueue;
}
void deliveryWork(Semaphore deliverySemaphore, IMessageDeliveryQueue queue)
{
if (deliverySemaphore.WaitOne(TimeSpan.FromSeconds(1), true))
{
bool release = true;
try
{
CommittableTransaction ct = new CommittableTransaction();
Transaction.Current = ct;
MessageDelivery md = queue.Dequeue(TimeSpan.FromSeconds(DEQUEUE_TIMEOUT_SECONDS));
if (md != null)
{
DeliveryWork work = new DeliveryWork(ct, md, deliverySemaphore);
release = false;
ThreadPool.QueueUserWorkItem((deliverWork) =>
{
try
{
DoSafely(() => DeliverOne((DeliveryWork)deliverWork));
}
finally
{
work.DeliverySemaphore.Release();
}
}, work);
}
else
{
ct.Dispose();
}
}
finally
{
if (release)
{
deliverySemaphore.Release();
}
Transaction.Current = null;
}
}
}
