question Re: Custom Nifi Processor can't see existing ControllerService in Archives of Support Questions (Read Only)

Custom Nifi Processor can't see existing ControllerService

blood9raven — Tue, 11 Oct 2016 20:25:50 GMT

Hi,

I am developing custom SQL nifi processor which will execute batch of SQL statements. It is not state of the art, but i just want to start developing.

Problem is that my processor can't see active DBCPConnectionPool services. All other SQL components which are preinstalled in nifi can see it.

I only have option to create new service, and when i do it complains that is not valid controller service, and i can see ID in property field.

I'm clearly doing something wrong, but i cant find out what.

Any hint is more then welcome.

Re: Custom Nifi Processor can't see existing ControllerService

bbende — Tue, 11 Oct 2016 20:28:36 GMT

This is most likely a dependency issue between your custom NAR and the controller service.

Please see this Wiki page:

https://cwiki.apache.org/confluence/display/NIFI/Maven+Projects+for+Extensions#MavenProjectsforExtensions-LinkingProcessorsandControllerServices

And this example:

https://github.com/bbende/nifi-dependency-example

Re: Custom Nifi Processor can't see existing ControllerService

blood9raven — Tue, 11 Oct 2016 20:47:55 GMT

Hi Bryan,

This solved the problem, thank you.

I was reading this https://nifi.apache.org/developer-guide.html, and i will check wiki also.

Best

Bojan