private async Task <(bool Handled, int RedeliveryCount)> HandleRedelivery(MessageProperties properties, MessageReceivedInfo info, Func <IQueue, Task> requeue)
{
var redeliveryCount = 0;
if (properties.Headers.ContainsKey(MessageHeaders.RedeliveryCount) &&
properties.Headers[MessageHeaders.RedeliveryCount] is int msgRedeliveryCount)
{
redeliveryCount = msgRedeliveryCount;
}
if (info.Redelivered)
{
var redeliveryLimit = _messageBus.Value.RedeliveryLimit;
if (properties.Headers.ContainsKey(MessageHeaders.RedeliveryLimit) &&
properties.Headers[MessageHeaders.RedeliveryLimit] is int msgRedeliveryLimit)
{
redeliveryLimit = msgRedeliveryLimit;
}
if (redeliveryLimit.HasValue && redeliveryCount >= redeliveryLimit)
{
throw new RedeliveryLimitException();
}
properties.Headers[MessageHeaders.RedeliveryCount] = redeliveryCount + 1;
var redeliveryDelay = _messageBus.Value.RedeliveryDelay;
if (properties.Headers.ContainsKey(MessageHeaders.RedeliveryDelay) &&
properties.Headers[MessageHeaders.RedeliveryDelay] is int msgRedeliveryDelay)
{
redeliveryDelay = TimeSpan.FromMilliseconds(msgRedeliveryDelay);
}
if (redeliveryDelay.HasValue)
{
properties.Expiration = redeliveryDelay.Value.TotalMilliseconds.ToString("F0");
await requeue(await _easyNetQBus.GetDelayQueueAsync(_queue.Name));
}
else
{
await requeue(_queue);
}
return(true, redeliveryCount);
}
return(false, redeliveryCount);
}
