/// <summary>
/// Called when a acknowledge message is received from the client
/// </summary>
internal async Task AcknowledgeDelivered(MqClient from, TmqMessage deliveryMessage)
{
MessageDelivery delivery = TimeKeeper.FindAndRemoveDelivery(from, deliveryMessage.MessageId);
//when server and consumer are in pc,
//sometimes consumer sends ack before server start to follow ack of the message
//that happens when ack message is arrived in less than 0.01ms
//in that situation, server can't find the delivery with FindAndRemoveDelivery, it returns null
//so we need to check it again after a few milliseconds
if (delivery == null)
{
await Task.Delay(1);
delivery = TimeKeeper.FindAndRemoveDelivery(from, deliveryMessage.MessageId);
//try again
if (delivery == null)
{
await Task.Delay(3);
delivery = TimeKeeper.FindAndRemoveDelivery(from, deliveryMessage.MessageId);
}
}
bool success = true;
if (deliveryMessage.Length > 0 && deliveryMessage.Content != null)
{
string msg = deliveryMessage.Content.ToString();
if (msg.Equals("FAILED", StringComparison.InvariantCultureIgnoreCase) || msg.Equals("TIMEOUT", StringComparison.InvariantCultureIgnoreCase))
{
success = false;
}
}
if (delivery != null)
{
delivery.MarkAsAcknowledged(success);
}
if (success)
{
Info.AddAcknowledge();
}
else
{
Info.AddUnacknowledge();
}
Decision decision = await DeliveryHandler.AcknowledgeReceived(this, deliveryMessage, delivery, success);
if (delivery != null)
{
if (Options.HideClientNames)
{
deliveryMessage.SetSource(null);
}
await ApplyDecision(decision, delivery.Message, deliveryMessage);
}
ReleaseAcknowledgeLock(true);
}
