[NIFI-13030] Provide endpoint for comparing different versions of registered flows

• Type: New Feature
• Status: In Progress
• Priority: Major
• Resolution: Unresolved
• Component/s: Core Framework
• Assignee: Simon Bence
• Reporter: Simon Bence
• Created: 12/Apr/24 06:59
• Updated: 19/Apr/24 11:15

Description

A new API endpoind will be added which expects a bucket and a flow id with two existing (and different) version identifier. When the call is successfull, the response contains a list of changed components with the differences similar to the result used by Show Local Changes.

Notes:

• Having the same version for both sides of the comparison will result an empty list
• Non-existing bucket or flow ids will result error response.
• Compared to the "show local changes" we need to prepare for bigger data sets. As the main purpose of this future is to compare relatively close versions when updating the flow, we can consider longer results as "non useful". Because of this, the results might be limited to a size, just like in case of Provenance Event listing
• This initial effort only focuses on providing the endpoint.

Issue Links

• links to: GitHub Pull Request #8670