Github user bbende commented on the issue:
https://github.com/apache/nifi-registry/pull/148
Before releasing any of this we would definitely have sections in the user
guide and admin guide related to extension bundles, but we can't really write
all that until the work is done, and this is only a starting point for the work.
Most of this is just integrating a new type of versioned item into the
existing registry framework, so if you aren't already familiar with how
registry works, then a starting point would probably be to play around with
version controlling flows, and go through all the existing documentation, and
then think of extension bundles as just another versioned thing like flows.
You can access the swagger documentation for the REST API from the running
application:
http://localhost:18080/nifi-registry-api/swagger/ui.html
You can also get a feel for how the current API works from looking at this
integration test:
https://github.com/apache/nifi-registry/blob/7744072b5f059fe5240746e968493eddefa719a6/nifi-registry-core/nifi-registry-web-api/src/test/java/org/apache/nifi/registry/web/api/UnsecuredNiFiRegistryClientIT.java#L320-L469
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