Processor example with dynamically fetched values for attributs

[Dominique De Vito]

Hi,

I try to define a Processor such as for a given attribut:

* the possible values are dynamically fetched from a REST WS (from time to
time)

* the UI offers to select one of these values from a drop-down list.

Is there some processor implementing such a pattern? If so, then, I may
take it as an example.

If there is no such processor, does someone know if the Processor I
envision is doable with current NiFi version?

Thanks.

Regards,
Dominique