Apache nifi supports powerful and scalable directed graphs of data routing, transformation, and system mediation logic. Its very simple to use product using which you can build "data flow" very easily. As of version 3.0 it has 90 prebuilt processors but then again you can extend them by adding your own custom processors.
In this article I am going to talk about how
you can build a custom nifi processor in your local machine and then move the final
finished processor which is a nar file to nifi.
This article is based on a video from youtube
and here is the link for that