private void CreateConsumerForQueue(string queueName)
{
if ((openedChannels.ContainsKey(queueName) && openedChannels[queueName] != null))
{
openedChannels[queueName].CallbackException -= CallbackException;
openedChannels[queueName].Dispose();
}
openedChannels[queueName] = persistentConnection.CreateChannel();
openedChannels[queueName].CallbackException += CallbackException;
var consumer = new AsyncEventingBasicConsumer(openedChannels[queueName]);
consumer.Received += ConsumerReceived;
openedChannels[queueName].BasicConsume(queue: queueName, autoAck: false, consumer: consumer);
void CallbackException(object?sender, CallbackExceptionEventArgs e)
{
CreateConsumerForQueue(queueName);
}
async Task ConsumerReceived(object?sender, BasicDeliverEventArgs eventArgs)
{
//await Task.Yield(); https://github.com/NickLydon/RabbitMQAsyncDeadlock
try
{
var body = eventArgs.Body;
var message = Encoding.UTF8.GetString(body.Span);
var routingKey = eventArgs.RoutingKey;
Event @event = JsonSerializer.Deserialize <Event>(message);
var subscription = subscriptionsManager.GetSubscription(queueName, routingKey);
if (subscription != null)
{
await subscription.ProcessEvent(services, @event);
}
openedChannels[queueName].BasicAck(deliveryTag: eventArgs.DeliveryTag, multiple: false);
}
catch (Exception ex)
{
//todo
// https://www.rabbitmq.com/dlx.html
//channel.BasicNack(deliveryTag: ea.DeliveryTag, multiple: false, true);
}
}
}
