void ReceiveMessages(CancellationToken outer, IEnumerable <string> queues)
{
using (var source = CancellationTokenSource.CreateLinkedTokenSource(_disposal.Token, outer))
{
var token = source.Token;
MessageEnvelope envelope;
foreach (var queue in queues)
{
while (_queueReader.TakeMessage(queue, token, out envelope))
{
try
{
var msg = envelope.MessageReference.Message;
var consumers = _consumerFactory.GetMessageConsumers(msg);
foreach (var consumer in consumers)
{
_observer.Notify(new ConsumeBegin(msg, consumer, envelope.QueueName));
consumer.Consume(msg);
_observer.Notify(new ConsumeEnd(msg, consumer, envelope.QueueName));
}
}
catch (Exception ex)
{
_observer.Notify(new FailedToConsumeMessage(ex, envelope.EnvelopeId, envelope.QueueName));
}
try
{
_queueReader.DeleteMessage(envelope);
}
catch (Exception ex)
{
// not a big deal. Message will be processed again.
_observer.Notify(new FailedToAckMessage(ex, envelope.EnvelopeId, envelope.QueueName));
}
}
}
}
}
void ReceiveMessages(CancellationToken outer)
{
using (var source = CancellationTokenSource.CreateLinkedTokenSource(_disposal.Token, outer))
{
while (true)
{
MessageTransportContext context;
try
{
if (!_inbox.TakeMessage(source.Token, out context))
{
// we didn't retrieve queue within the token lifetime.
// it's time to shutdown the server
break;
}
}
catch (Exception)
{
continue;
}
try
{
ProcessMessage(context);
}
catch (ThreadAbortException)
{
// Nothing. we are being shutdown
}
catch (Exception ex)
{
var e = new DispatchRecoveryFailed(ex, context, context.QueueName);
SystemObserver.Notify(e);
}
}
}
}