Splunk Search

regex extract capturing group value

splunkuser2013
New Member

I would like to use function case and regex together and extract the value of capturing group in one field
e.g. http_request field value is : abcd.com/getdata?type=numberEnabled or abcd.com/showdata?type=numberEnabled
Would like to do something like

 eval mode=case(regex(http_request,".*(getdata|showdata).*numberEnabled",$1.Enabled, true(), "other")

and it should return

getdata.Enabled
showdata.Enbaled
Tags (1)
0 Karma

Ayn
Legend

I think it's better to state what problem you're trying to solve rather than saying how explicitly you would like to solve it. Your proposed solution is not how it works in Splunk. You'd first extract the getdata or showdata string, then do an eval where you check if you got a value for that field. Something like this.

... | rex field=http_request ".*(?<endpoint>getdata|showdata).*numberEnabled" | eval mode=if(isnotnull(endpoint), endpoint . "Enabled", "other")
0 Karma

Ayn
Legend

OK? In your example you had a case function ending with the string "other" as fallback, so that's what I've done in my proposed solution as well. What part of the URL would you want to extract as a fallback option?

0 Karma

splunkuser2013
New Member

To me the solution is not clear. To state again , i want to match my URL against different values and if none of the value match then i want to extract a part of URL.

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Get Agentic with Splunk Lantern: Connect to Cisco Cloud Control, Transform ...

Splunk Lantern is Splunk’s customer success center that provides practical guidance from Splunk experts on key ...

July Community Events: Master ITSI 5.0 & Automate Splunk

Struggling with alert fatigue or feeling like you're spending more time on infrastructure maintenance than ...

New Release of Federated Search: Bringing Splunk Analytics to More of Your Data

Organizations today are generating more data than ever and storing it across cloud object stores, data lakes, ...