How to concatenate fields from JSON

BeeSpark — Wed, 22 Nov 2023 11:26:53 GMT

I have an inputlookup table, in this lookup table there is a JSON array called "Evidence"

There is two field I would like to extract, one is "Rule" and the "Criticality". An example of Evidence array will look like this:

{"Evidence":[{"Rule":"Observed in the Wild Telemetry","Criticality":1},{"Rule":"Recent DDoS","Criticality":3}]}

So if I eval both "Rule" and Criticality" as shown below:

| eval "Rule"=spath(Evidence, "Evidence{}.Rule")
| eval "Criticality"=spath(Evidence, "Evidence{}.Criticality")
| table Rule Criticality

The output will show like this but the Rule & Criticality column doesn't separate into different row (it is all in one row):

Rule	Criticality
Observed in the Wild Telemetry Recent DDoS	1 3

Now the tricky part, I would like display the top count of Rule (top Rule limit=10) but at the same time display the associated Criticality with the Rule. How do it? since the above does not separate into different row.

The final outlook I am looking for, will look like this:

Rule	Criticality	Count
Observed in the Wild Telemetry	1	50
Recent DDoS	3	2

An alternative I was thinking was using foreach then concate it into a Combined Field, but I think It is kind of complex.

Re: How to concatenate fields from JSON

ITWhisperer — Wed, 22 Nov 2023 10:47:42 GMT

| spath Evidence{} output=Evidence | mvexpand Evidence | spath input=Evidence | stats count by Rule Criticality

topic How to concatenate fields from JSON in Splunk Search

How to concatenate fields from JSON

Re: How to concatenate fields from JSON