Splunk Search

How can I improve my regular expression to extract a field located inside a URL?

guillecasco
Path Finder

Hey i have the following logs:

INCOMING REQUEST:
URL:  /pop/v1/enviro/2ee999b4-d97ba81bdefd/updatesearching/

i need to extract the numbers after enviro/ and before /updatesearching

i created following regular expression: REX "URL:\s\/\w+\/\w+\/\enviro/(?.*)/updatesearching/

but i'm not getting it. how can i improve the regular expression or how can i extract that number?

0 Karma
1 Solution

gokadroid
Motivator

Can you please try this and see if it works for you:

If it's always between enviro and updatesearching:

your query to return events
|rex field=_raw "enviro\/(?<capturedNum>[^\/]+)\/updatesearching"
| table capturedNum

If the numbers of interest come always after enviro:

your query to return events
|rex field=_raw "\/enviro\/(?<capturedNum>[^\/]+)\/"
| table capturedNum

If it's always the fourth element then try this:

your query to return events
|rex field=_raw "URL:\s*\/([^\s\/]+\/){3}(?<capturedNum>[^\/]+)\/"
| table capturedNum

View solution in original post

gokadroid
Motivator

Can you please try this and see if it works for you:

If it's always between enviro and updatesearching:

your query to return events
|rex field=_raw "enviro\/(?<capturedNum>[^\/]+)\/updatesearching"
| table capturedNum

If the numbers of interest come always after enviro:

your query to return events
|rex field=_raw "\/enviro\/(?<capturedNum>[^\/]+)\/"
| table capturedNum

If it's always the fourth element then try this:

your query to return events
|rex field=_raw "URL:\s*\/([^\s\/]+\/){3}(?<capturedNum>[^\/]+)\/"
| table capturedNum

guillecasco
Path Finder

it worked! |rex field=_raw "enviro\/(?[^\/]+)\/updatesearching" thanks dude

0 Karma

guillecasco
Path Finder

what is the field=_raw does exactly. I didnt put there anything

0 Karma
Get Updates on the Splunk Community!

.conf24 | Day 0

Hello Splunk Community! My name is Chris, and I'm based in Canberra, Australia's capital, and I travelled for ...

Enhance Security Visibility with Splunk Enterprise Security 7.1 through Threat ...

(view in My Videos)Struggling with alert fatigue, lack of context, and prioritization around security ...

Troubleshooting the OpenTelemetry Collector

  In this tech talk, you’ll learn how to troubleshoot the OpenTelemetry collector - from checking the ...