Awesome, I love me some Groovy!  I am new to NiFi but am interested in scripting capabilities such as yours. For example, using the JSR-223 spec (and the ScriptEngineManager), NiFi could support scripting for many JVM languages including Groovy, Jython, Jruby, Renjin, JavaScript, even AppleScript on a Mac :)

Cheers,
Matt

From: Angry Duck Studio
Reply-To: <users@nifi.apache.org>
Date: Monday, November 16, 2015 at 9:10 AM
To: <users@nifi.apache.org>
Subject: [announce] open source NATS messaging and Groovy scripting processors for NiFi

I have been working with NiFi lately and have written a some custom processors which may be useful to someone.

https://github.com/mring33621/nats-messaging-for-nifi -- Allows Apache NiFi to send/receive string based messages to/from NATS messaging topics.
https://github.com/mring33621/scripting-for-nifi -- Use Groovy scripts as NiFi Processors!

Issues and Pull Requests happily accepted!

Thanks for reading.

-Matt Ring