Splunk Dev

rex command

saifdj
Engager

How to fetch activity id using rex command

Log record:

DATA= {"note":"Succeeded | {\r\n \"service.url\": \"\",\r\n \"enable.debug\": false,\r\n \"permission.base.url\": \"\",\r\n \"userInfo.base.url\": \"\",\r\n \"storeId.base.url\": \"\",\r\n \"app.session.timeout\": 25\r\n},activityId: 64AB3318-4DA3-4D38-9800-5DABCC7EC263,","appVersion":"1.10"

I tried below query with no luck,

| rex field=DATA ",activityId: (?<ACTIVITY_ID_VALUE>.*)"

Trying to fetch value "64AB3318-4DA3-4D38-9800-5DABCC7EC263" and show in table

0 Karma

PavelP
Motivator

Hello @saifdj

please double check you that you have an extracted field DATA.

If not you can use a general regex applied to whole _raw event (which is not so effizient as you indended):

rex "activityId: (?<a1>[\w\-]+)"

Please let me know how if it worked

0 Karma

cpetterborg
SplunkTrust
SplunkTrust

Slightly more generic (since it looks like a comma is the delimiter):

... | rex "activityId: (?<ACTIVITY_ID_VALUE>[^,]+)"
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!

[Puzzles] Solve, Learn, Repeat: Matching cron expressions

This puzzle (first published here) is based on matching timestamps to cron expressions.All the timestamps ...

Why Splunk Customers Should Attend Cisco Live 2026 Las Vegas

Why Splunk Customers Should Attend Cisco Live 2026 Las Vegas     Cisco Live 2026 is almost here, and this ...

Data Management Digest – May 2026

Welcome to the May 2026 edition of Data Management Digest!   As your trusted partner in data innovation, the ...