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));
}
}
}
}
}