Json Validation for mandatory fields

[Selvam Raman]

Hi,

I will get array of json files. There are some fields which are mandatory
in json file, if not present i should not process file.

How can i achieve it in nifi.

-- 
Selvam Raman
"லஞ்சம் தவிர்த்து நெஞ்சம் நிமிர்த்து"