Team, For more than two years, the NiFi Registry project has received minimal maintenance attention. This is apparent from a review of commits related to the nifi-registry directory [1], the majority of which are incremental dependency version upgrades. As project maintainers, we need to decide on a support strategy going forward.
The lack of maintenance for NiFi Registry is clear when reviewing important elements of the project itself. On the frontend, this includes Angular 11, which is no longer supported, and last updated over three years ago. Other issues include a historical approach to application token management, which NiFi itself changed in version 1.15.0, and legacy integration with OpenID Connect. Current community work has focused on direct integration with Git-based Flow Registry Clients, including GitHub, GitLab, and BitBucket. With the Flow Registry Client as an extension point itself, the NiFi framework is effectively decoupled from NiFi Registry as the solution for version control of flow definitions. The NiFi Registry project previously existed in a separate repository until 2021 [2], and at the time, there were some advantages to co-locating projects. With the decoupling of the client interface, however, there seems to be little value in continuing to maintain the project in the same repository. With minimal maintenance over multiple years, we should seriously consider deprecating NiFi Registry for removal. As an intermediate step, however, moving NiFi Registry back to a separate repository would have multiple benefits. It would focus the maintenance concerns for NiFi and NiFi Registry independently, clarifying where work is happening, and where it is needed. It would also provide the opportunity for focused improvements to NiFi Registry, if there is remaining support for it among project PMC members and committers. I'm willing to put in the work to decouple the projects, so it would be helpful to get some feedback from the community, and from active contributors in particular, about future maintenance for NiFi Registry. Regards, David Handermann [1] https://github.com/apache/nifi/commits/main/nifi-registry [2] https://issues.apache.org/jira/browse/NIFI-8528
