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
SplunkTrust
SplunkTrust
0 Karma
Get Updates on the Splunk Community!

Routing logs with Splunk OTel Collector for Kubernetes

The Splunk Distribution of the OpenTelemetry (OTel) Collector is a product that provides a way to ingest ...

Welcome to the Splunk Community!

(view in My Videos) We're so glad you're here! The Splunk Community is place to connect, learn, give back, and ...

Tech Talk | Elevating Digital Service Excellence: The Synergy of Splunk RUM & APM

Elevating Digital Service Excellence: The Synergy of Real User Monitoring and Application Performance ...