Splunk Search

Field extraction using dynamic regular expression - rex command

arpitpropay
Explorer

I am trying to extract key value pairs from JSON events using rex command

mysearch | rex field=_raw max_match=0 "\"(?<Key>\b\w+[^\":]*)\":(?!\s*{\[)\"*(?<Value>(?!\[{|{|\[)[^(,|}|\")]*)" 

I have a single column CSV lookup with all the key names I am interested in

| inputlookup my_fields_json.csv | fields FieldName 

Is there a way to use the lookup to make my rex command regular expression dynamic so I only extract the fields I am interested in?

0 Karma

harsmarvania57
Ultra Champion
0 Karma
Get Updates on the Splunk Community!

Updated Data Type Articles, Anniversary Celebrations, and More on Splunk Lantern

Splunk Lantern is a Splunk customer success center that provides advice from Splunk experts on valuable data ...

A Prelude to .conf25: Your Guide to Splunk University

Heading to Boston this September for .conf25? Get a jumpstart by arriving a few days early for Splunk ...

4 Ways the Splunk Community Helps You Prepare for .conf25

.conf25 is right around the corner, and whether you’re a first-time attendee or a seasoned Splunker, the ...