private async Task MessageReceivedAsync(QueueMessage <TMessage> message, CancellationToken cancellationToken)
{
using (var performanceLogger = new PerformanceLogger(performanceLoggingMethodName))
{
try
{
if (Behaviour == AcknowledgeBehaviour.BeforeProcess)
{
_queueConsumer.AcknowledgeMessage(message.DeliveryTag);
}
await ProcessMessageAsync(message.Message, message.DeliveryTag, cancellationToken, message.RoutingKey);
if (Behaviour == AcknowledgeBehaviour.AfterProcess)
{
_queueConsumer.AcknowledgeMessage(message.DeliveryTag);
}
if (Behaviour != AcknowledgeBehaviour.Never && Behaviour != AcknowledgeBehaviour.Deferred)
{
_logger.InfoFormat(Resources.MessageProcessedLogEntry, message.DeliveryTag);
}
}
catch (AlreadyClosedException ex)
{
_logger.Warn($"The connection to Rabbit was closed while processing message with deliveryTag '{message.DeliveryTag}', error details - '{ex.Message}'.");
}
catch (FatalErrorException e)
{
if (Behaviour == AcknowledgeBehaviour.AfterProcess ||
Behaviour == AcknowledgeBehaviour.Async)
{
_queueConsumer.NegativelyAcknowledgeAndRequeue(message.DeliveryTag);
}
_logger.Fatal(Resources.FatalErrorLogEntry, e);
}
catch (Exception e)
{
_logger.ErrorFormat(Resources.ProcessingErrorLogEntry, message.DeliveryTag, e);
if (Behaviour == AcknowledgeBehaviour.AfterProcess ||
Behaviour == AcknowledgeBehaviour.Async)
{
_queueConsumer.NegativelyAcknowledge(message.DeliveryTag);
}
}
}
}
private Func <Task> RunSequentialProcessor(ProcessingQueue <TMessage> processingQueue, CancellationToken cancellationToken)
{
return(async() =>
{
QueueMessage <TMessage> dequeuedMessage;
while (!cancellationToken.IsCancellationRequested && processingQueue.Queue.TryPeek(out dequeuedMessage))
{
using (var performanceLogger = new PerformanceLogger(performanceLoggingMethodName))
{
_logger.DebugFormat(Resources.MessageReceivedLogEntry, dequeuedMessage.DeliveryTag);
try
{
await ProcessMessageAsync(
dequeuedMessage.Message,
dequeuedMessage.DeliveryTag,
cancellationToken,
dequeuedMessage.RoutingKey);
if (Behaviour != AcknowledgeBehaviour.Async)
{
_queueConsumer.AcknowledgeMessage(dequeuedMessage.DeliveryTag);
}
_logger.InfoFormat(Resources.MessageProcessedLogEntry, dequeuedMessage.DeliveryTag);
}
catch (FatalErrorException e)
{
_logger.Fatal(Resources.FatalErrorLogEntry, e);
_queueConsumer.NegativelyAcknowledgeAndRequeue(dequeuedMessage.DeliveryTag);
throw;
}
catch (Exception e)
{
_logger.ErrorFormat(Resources.ProcessingErrorLogEntry, dequeuedMessage.DeliveryTag, e);
_queueConsumer.NegativelyAcknowledge(dequeuedMessage.DeliveryTag);
}
}
// we have finished processing - remove the message from the queue and wait for the next one.
processingQueue.Queue.TryDequeue(out dequeuedMessage);
await processingQueue.AutoResetEvent.WaitOneAsync();
}
});
}
