/// <summary>
/// Subscriber
/// </summary>
protected void Subscribe <TRequest>(CancellationToken ctx)
{
_eventingBasicConsumer.Received += async(sender, e) =>
{
object?attemptObj = null;
e.BasicProperties.Headers?.TryGetValue("x-attempt", out attemptObj);
int.TryParse(attemptObj?.ToString() ?? "0", out var attempt);
try
{
var request = _serializer.Deserialize(typeof(TRequest), e.Body);
var @event = (TRequest)request;
await ProcessMessage(@event, ctx);
}
catch (Exception ex)
{
_logger?.LogError(ex, ex.Message);
object?ttlObj = null;
e.BasicProperties.Headers?.TryGetValue("x-message-ttl", out ttlObj);
var ttl = ttlObj == null
? _config.GetDelayInSeconds()
: TimeSpan.FromMilliseconds((int)ttlObj);
var properties = GetBasicProperties(++attempt, ttl);
Publish(attempt, ttl, properties, e.Body.ToArray());
}
finally
{
TryAck(e);
}
};
ConfigureSubscriber();
}