Splunk Search

replace function for eval token problem

evelenke
Contributor

Hi Splunkers,

I was stuck with cutting the part of string for drilldown value from a chart using the <eval token>.
So I have values with names divided by symbol with other values and I need to have only the first part in output for drilldown page.
Obviously this won't work:

<eval token="fullName">replace('click.value',"(^[^\;]+)(.+)","\1")</eval>

And here's workaround :

mvindex(split($click.value$, ";"),0)

But here's question - is it planned to provide support for replace function for eval token.
And also can someone please provide a JS interpret of replace function for this case, because I've tried so much but with no success.

0 Karma

gesman_splunk
Splunk Employee
Splunk Employee

The problem seems to be that in:

 

replace(XXX,"(y)(z)", "\1\2")

 

The

 

"\1\2"

 

 construct is not supported within SimpleXML.
However try to replace it with:

 

"$1$2"

 

Gleb

Tags (3)

niketn
Legend

I also think that there is an issue with this particular functionality of replace which does not seems to work for eval in Simple XML. Following Search works in Splunk Search

| makeresults 
| eval fullname="Jason;Smith"
| eval FirstName=replace(fullname,"(^[^\;]+)(.+)","\1")

Following is snippet from Simple XML (to recreate the issue), which does not work.

      <chart>
        <title>Clicked Value=$tokFirstName$</title>
        <search>
          <query>| makeresults 
| eval fullname="Jason;Smith"
| stats count by fullname</query>
          <earliest>-1m</earliest>
          <latest>now</latest>
          <sampleRatio>1</sampleRatio>
        </search>
        <drilldown>
          <eval token="tokFirstName">replace('click.value',"(^[^\;]+)(.+)","\1")</eval>
        </drilldown>
____________________________________________
| makeresults | eval message= "Happy Splunking!!!"
0 Karma

woodcock
Esteemed Legend

Using replace in an eval token is very common and should work just fine as documented here, among many other places:

https://answers.splunk.com/answers/452922/how-to-use-the-replace-command-to-modify-a-regex-t.html

0 Karma
Career Survey
First 500 qualified respondents will receive a $20 gift card! Tell us about your professional Splunk journey.

Can’t make it to .conf25? Join us online!

Get Updates on the Splunk Community!

Splunk Lantern’s Guide to The Most Popular .conf25 Sessions

Splunk Lantern is a Splunk customer success center that provides advice from Splunk experts on valuable data ...

Unlock What’s Next: The Splunk Cloud Platform at .conf25

In just a few days, Boston will be buzzing as the Splunk team and thousands of community members come together ...

Index This | How many sevens are there between 1 and 100?

August 2025 Edition Hayyy Splunk Education Enthusiasts and the Eternally Curious!  We’re back with this ...