Splunk Search

regex question

dbautist
Explorer

I have the following log snippet with a JSON payload that includes a newline. How do I extract the entire JSON payload?

ID: 123
Payload: {
"info":{
"name":"bob",
"age":"35"
}
}

Expected field should contain:

{
"info":{
"name":"bob",
"age":"35"
}
}

Tags (1)
0 Karma
1 Solution

aholzer
Motivator

This should do the trick for you:

Payload: (?P<YourField>[^\}]+\}){2}

Assuming that all your payloads only have 2 close curly brackets '}'

Use the "interactive field extractor" view to test the regex before applying it (run your search > click the blue box next to one of the events > select "Extract Fields")

EDIT:

Change the value {2} from my above code to match the number of "closing curly brackets" '}' in your payload to have the regex work.

View solution in original post

0 Karma

aholzer
Motivator

This should do the trick for you:

Payload: (?P<YourField>[^\}]+\}){2}

Assuming that all your payloads only have 2 close curly brackets '}'

Use the "interactive field extractor" view to test the regex before applying it (run your search > click the blue box next to one of the events > select "Extract Fields")

EDIT:

Change the value {2} from my above code to match the number of "closing curly brackets" '}' in your payload to have the regex work.

0 Karma

aholzer
Motivator

As long as the number of "closing curly brackets" '}' is consistent across all your payloads, just count them and then change the {2} from my original post to the new number.

So in your latest example the {2} should be changed to a {4}.

0 Karma

dbautist
Explorer

That's actually not the case. I have something like:

{
"test":{
"a":"b"
"c":{
"d":"e"
}
}
"e":{
"f":"g"
}
}

0 Karma
Get Updates on the Splunk Community!

Introducing the Splunk Community Dashboard Challenge!

Welcome to Splunk Community Dashboard Challenge! This is your chance to showcase your skills in creating ...

Get the T-shirt to Prove You Survived Splunk University Bootcamp

As if Splunk University, in Las Vegas, in-person, with three days of bootcamps and labs weren’t enough, now ...

Wondering How to Build Resiliency in the Cloud?

IT leaders are choosing Splunk Cloud as an ideal cloud transformation platform to drive business resilience,  ...