Backend plugins - understand simple json data source for backend plugin

I have been following this thread for sometime :
Seems most of the changes to support backend are merged in :

I was wondering if there are directions to use this to move plugin to backend.
Looked at but seems substantial changes including rewrite of datasource.ts to datasource.go

We are using druid and would love to move it to the backend so that alerting is possible.

trying to bump up the thread