strimzi kafka operator crd and code structure

[lanzhiwang]

The strimzi kafka operator is written in java language, which is different from the operators defined by common operator-sdk. Can you introduce how crd is defined and registered, or if I want to add a crd, what should I do?

[scholzj]

First of all, before adding any new CRDs, you should maybe explain what are you trying to do to make sure you don't waste your effort. For example by writing a proposal: https://github.com/strimzi/proposals

The Strimzi CRDs are defined in the api module as a plain Java classes. If you look there for example into the Kafka class, you should see how it is defined and how it uses the different other classes for the fields etc. Once the CRD is defined there in the Java classes, the crd-generator module takes it and generates from it the CRD YAML files and Docs.

Does this help?