public void WireUpContextFeatures <TMessageContext>(TMessageContext context, IRawConsumer consumer, BasicDeliverEventArgs args) where TMessageContext : IMessageContext
{
if (context == null)
{
return;
}
var advancedCtx = context as IAdvancedMessageContext;
if (advancedCtx == null)
{
return;
}
advancedCtx.Nack = () =>
{
consumer.AcknowledgedTags.Add(args.DeliveryTag);
consumer.Model.BasicNack(args.DeliveryTag, false, true);
};
advancedCtx.RetryLater = timespan =>
{
var dlxName = _conventions.DeadLetterExchangeNamingConvention();
var dlQueueName = _conventions.RetryQueueNamingConvention();
var channel = _channelFactory.CreateChannel();
channel.ExchangeDeclare(dlxName, ExchangeType.Direct);
channel.QueueDeclare(dlQueueName, false, false, true, new Dictionary <string, object>
{
{ QueueArgument.DeadLetterExchange, args.Exchange },
{ QueueArgument.MessageTtl, Convert.ToInt32(timespan.TotalMilliseconds) }
});
channel.QueueBind(dlQueueName, dlxName, args.RoutingKey, null);
UpdateHeaders(args.BasicProperties);
channel.BasicPublish(dlxName, args.RoutingKey, args.BasicProperties, args.Body);
Timer disposeChannel = null;
disposeChannel = new Timer(state =>
{
channel.QueueDelete(dlQueueName); //TODO: investigate why auto-delete doesn't work?
channel.Dispose();
disposeChannel?.Dispose();
}, null, timespan.Add(TimeSpan.FromMilliseconds(20)), new TimeSpan(-1));
};
advancedCtx.RetryInfo = GetRetryInformatino(args.BasicProperties);
}