Reactive Messaging (Kafka) - Detect dead-letter-queues in smallrye-health

[FelixA]

Description

smallrye-health automatically detects incoming and outgoing topics as well as their health status and the possibility to verify if the topic exists on the broker. Unfortunately, this functionality does not yet exist for dead-letter-queues. It would be convenient if there was also a detection for the dead-letter-queues.

I would expect, if I either add the property deletion.failure-strategy=dead-letter-queue, that there was a detection for the topic dead-letter-topic-${brokername} or if I add the property dead-letter-queue.topic=example-dlq that there was a a detection for the topic example-dlq

Implementation ideas

No response

[quarkus-bot[bot]]

/cc @Ladicek, @jmartisk, @phillip-kruger, @radcortez, @xstefank

[Ladicek]

This is actually a feature request for SmallRye Reactive Messaging, which implements the health checks.

CC @cescoffier @ozangunalp

[cescoffier]

Yes, this needs to be added into SmallRye Reactive Messaging first.

[cescoffier]

I have opened: https://github.com/smallrye/smallrye-reactive-messaging/issues/1818.

[ozangunalp]

This is not quite right, because currently for incoming channel client-based health checks, we only check if we can connect to the broker, and do not check the existence of specific topics. We do that for outgoing channels.