How to get all Quarkus application configuration properties and their values?

Question

I would like to generate a list of my application configuration values, with their description and default values. Just like quarkus has for the framework itself on https://quarkus.io/guides/all-config, but for my application properties.

Would it be possible to achieve this using the SmallRye Config or Quarkus APIs?

Answer 1

Quarkus does not have an official support for this. This has been discussed, and there is even an issue to add it properly at some point: https://github.com/quarkusio/quarkus/issues/19020

At your own risk, you can add the quarkus-extension-processor to your project and annotate the mappings with @ConfigRoot(phase = ConfigPhase.RUN_TIME)(it still requires the @ConfigMapping), which will generate the adoc files used by Quarkus for its own configuration.