Splunk Search

How to create table columns from JSON?

kackerman7
Observer

Hi, I have fields from a JSON file that are getting parsed like this: 

kackerman7_0-1655917639143.png

I'm struggling to find a way to turn those fields into columns in a table. Anyone have any experience with this? 

 

Thank you

 

Labels (2)
0 Karma

rymundo_splunk
Splunk Employee
Splunk Employee

Hi, would something like this work for you?

|makeresults
| eval json="{\"Packets\":{\"0\": 4, \"1\": 3}, \"Bytes\":{\"0\":8, \"1\":42} }"
| spath input=json
| table Packets.* Bytes.*

Basically I take the string, parse it to json, then I can use dot notation and wildcards to extract the key names to be column names.

rymundo_splunk_1-1655945627642.png

 

0 Karma

kackerman7
Observer

Hi, 

Unfortunately no - I've tried something similar to this. I need all of the Packets elements in one column, all of the Bytes elements in another column, etc. 

0 Karma

rymundo_splunk
Splunk Employee
Splunk Employee

Okay, I misunderstood.  I think you are asking for something like this?

Index Packet Bytes
0 1 10
1 4 40
2 2 20

 

|makeresults
| eval json="{\"Packets\":{\"0\": 4, \"1\": 3}, \"Bytes\":{\"0\":8, \"1\":42} }"
| spath input=json
| table Packets.* Bytes.*
| eval indexes=null(),
packets=null(),
bytes=null()
| foreach Packets.* [ eval indexes=mvappend(indexes,"<<MATCHSEG1>>"), packets=mvappend(packets,'<<FIELD>>') ]
| foreach Bytes.* [ eval bytes=mvappend(bytes,'<<FIELD>>') ]
| eval i_p_b=mvzip(mvzip(indexes, packets), bytes)
| fields i_p_b
| mvexpand i_p_b
| rex field=i_p_b "^(?<index>\d+),(?<packet>\d+),(?<bytes>\d+)"

 

rymundo_splunk_0-1656017027850.png

 

0 Karma

kackerman7
Observer

Yes, this is exactly what I'm looking for. However, when I run it on my data (with all fields included), my table is empty. What am I doing wrong? 

kackerman7_0-1656359174452.png

 

kackerman7_1-1656359248343.png

 

 

0 Karma
Get Updates on the Splunk Community!

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 ...

Getting Started with AIOps: Event Correlation Basics and Alert Storm Detection in ...

Getting Started with AIOps:Event Correlation Basics and Alert Storm Detection in Splunk IT Service ...

Register to Attend BSides SPL 2022 - It's all Happening October 18!

Join like-minded individuals for technical sessions on everything Splunk!  This is a community-led and run ...