public async Task HandleMessage(Message message)
{
if (IsStopping)
{
await WaitAndAbandonMessage(message).ConfigureAwait(false);
return;
}
using (var delivery = _tracker.BeginDelivery())
{
var redelivered = message.Attributes.ContainsKey("ApproximateReceiveCount") && (int.TryParse(message.Attributes["ApproximateReceiveCount"], out var approximateReceiveCount) && approximateReceiveCount > 1);
var context = new AmazonSqsReceiveContext(_inputAddress, message, redelivered, _receiveObserver, _context);
context.GetOrAddPayload(() => _errorTransport);
context.GetOrAddPayload(() => _deadLetterTransport);
context.GetOrAddPayload(() => _receiveSettings);
context.GetOrAddPayload(() => _model);
context.GetOrAddPayload(() => _model.ConnectionContext);
try
{
if (!_pending.TryAdd(message.MessageId, context))
{
if (_log.IsErrorEnabled)
{
_log.ErrorFormat("Duplicate BasicDeliver: {0}", message.MessageId);
}
}
await _receiveObserver.PreReceive(context).ConfigureAwait(false);
await _receivePipe.Send(context).ConfigureAwait(false);
await context.CompleteTask.ConfigureAwait(false);
// Acknowledge
await _model.DeleteMessage(_queueUrl, message.ReceiptHandle);
await _receiveObserver.PostReceive(context).ConfigureAwait(false);
}
catch (Exception ex)
{
await _receiveObserver.ReceiveFault(context, ex).ConfigureAwait(false);
try
{
//_model.BasicNack(deliveryTag, false, true);
}
catch (Exception ackEx)
{
if (_log.IsErrorEnabled)
{
_log.ErrorFormat("An error occurred trying to NACK a message with delivery tag {0}: {1}", message.MessageId, ackEx.ToString());
}
}
}
finally
{
_pending.TryRemove(message.MessageId, out _);
context.Dispose();
}
}
}
