Splunk Search

How to extract two values from a string using regex?

pc1234
Engager

I'm requesting help constructing a regular expression for the following:

I need to extract two values from the string below:

[app/task/function/5]

field a='app' (string after first [ before first slash)
field b = '5' (value after last slash before closing]) 

Another example is:

[app/task/3]

fielda = app
fieldb= 3

In addition, I need the extraction to fail if a string of characters is found.
For example, the character string to exclude is 'function':

[function/app/2]

The extraction should fail since 'function' is contained in the string.

Any assistance would be appreciated.

Thanks in advance.

Labels (3)
0 Karma

gcusello
Legend

Hi @pc1234,
use these two regexes:

| rex "^field\s*a\s*\=\s*(\'|\s)(?<fielda>\w+)"
| rex "^field\s*b\s*\=\s*(\'|\s)(?<fielda>\d+)"

You can test the first at https://regex101.com/r/circlS/1 and the second at https://regex101.com/r/circlS/2

Ciao.
Giuseppe

0 Karma

pc1234
Engager

that only extracts the first value. it also doesn't address failing if a string of characters is found(see above)

0 Karma

493669
Super Champion

I updated answer please try again

0 Karma

493669
Super Champion

try @pc1234,
Updated:

...|rex "\[(?<field1>\w{3})\/.*\/(?<field2>\d)\]"
0 Karma
Get Updates on the Splunk Community!

Happy CX Day to our Community Superheroes!

Happy 10th Birthday CX Day!What is CX Day? It’s a global celebration recognizing innovation and success in the ...

Check out This Month’s Brand new Splunk Lantern Articles

Splunk Lantern is a customer success center providing advice from Splunk experts on valuable data insights, ...

Routing Data to Different Splunk Indexes in the OpenTelemetry Collector

This blog post is part of an ongoing series on OpenTelemetry. The OpenTelemetry project is the second largest ...