使用Spring AMQP时，如何正确处理RabbitMQ通道上basicAck的IOException？

Question

When having declared a method like this using Spring AMQP:

@RabbitListener(..)    
public void myMethod(@Header(AmqpHeaders.CHANNEL) Channel channel, @Header(AmqpHeaders.DELIVERY_TAG) Long tag, ...)

and using manual acknowledge mode, how should one properly deal with the IOException that may be thrown when doing ACK:

try {
    channel.basicAck(tag, false);
} catch (IOException e) {
  // What to do here?
}

Should the exception be rethrown? Should the "basicAck" operation be retried? What's the proper way to handle it?

Answer 1

The standard way of doing this is using retry mechanism & to come out if none of them succeeds.

However, based on my experience, if channel throws an exception, it more or less means the channel is useless & you might have to redo the whole thing again. I normally log the error along with the required details so that I can track which message processing failed so that I can verify the same later to see if its processed or I need to do anything about it.