@brajs   Yes, it is possible to make custom flow analysis rules.  This is still tech preview in nifi 2.0 so documentation is limited.  I would recommend to take a look at some existing rules, tear them down to source code, modify to suit, and build and package your custom rules.  Once you have a new rules nar file, just deliver it to the nifi /lib location and it should be available to use. ... View more