question Re: How to access NIFI Process Group variable in ExecuteScript Processor ? in Archives of Support Questions (Read Only)

How to access NIFI Process Group variable in ExecuteScript Processor ?

vivek_b3ds — Tue, 19 Jun 2018 12:10:50 GMT

I want to access the process group variable from execute script and then need to change its value. I am using python. I have read the article which describe how to access flowfile attributes but not variables. My requirement is when some job complete successfully then some value is to be stored in variable.

Re: How to access NIFI Process Group variable in ExecuteScript Processor ?

ahadjidj — Tue, 19 Jun 2018 15:52:51 GMT

Hi @Vivek Singh

This has been answered by @Matt Burgess recently : https://community.hortonworks.com/questions/193888/nifi-is-it-possible-to-access-processor-group-vari.html

This is mainly on how to access.

To update the variable, you should use the API. I don't think there's a direct way from the script. Maybe take the output value as a flow file after the ExecuteScript and use another processor to call the API and update the value

Re: How to access NIFI Process Group variable in ExecuteScript Processor ?

vivek_b3ds — Tue, 19 Jun 2018 15:56:04 GMT

I'd seen that already but its just for reading not for changing. I need to read and then manipulate the variable's value

Re: How to access NIFI Process Group variable in ExecuteScript Processor ?

ahadjidj — Tue, 19 Jun 2018 15:57:01 GMT

Yes sorry I submitted before finishing my answer

Re: How to access NIFI Process Group variable in ExecuteScript Processor ?

joseph_cheung2 — Tue, 11 Sep 2018 04:29:44 GMT

more a question, so any update for manipulating variables? I have the same issue. Which API to call?