[NIFI-5076] Add a command to NiFi CLI to expose all Flow snapshots using PersistenceProvider

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Do
• Component/s: Tools and Build
• Assignee: Koji Kawamura
• Reporter: Koji Kawamura
• Created: 12/Apr/18 12:37
• Updated: 08/May/18 06:43
• Resolved: 08/May/18 06:43

Description

In NiFi Registry project, there is an improvement to add new FlowPersistenceProvider which can utilize Git technology.

We need to provide a tool to migrate existing Flow snapshots those are persisted with the FileSystemFlowPersistenceProvider, so that users can switch from that to new Git persistence provider, or vise versa.

A possible approach is taking a providers.xml file and a URL of running NiFi Registry with a FlowPersistenceProvider which is currently used, then extract all Flow snapshots then persist those with the new PersistenceProvider. This way, existing Flow snapshots can be extracted into the new PersistenceProvider storage. After that, NiFi Registry can be configured to use new provider with existing Flow snapshots.

Issue Links

• relates to: NIFIREG-162 Add Git backed persistence provider
• links to: GitHub Pull Request #2631