Conditional field alias / rename

[tmarlette]

I'm attempting to rename a field of windows data that will be put into a datamodel, however There seems to be a catch. While the sourcetype remains the same for both CPU and Memory, the field 'Value' using perfmon data is consistent.

Here are my two searches, 1 for CPU 1 for memory.

CPU:

index=perfmon tag=process_perf sourcetype="Perfmon:Process counter="% Processor Time"

Memory

 index=perfmon tag=process_perf sourcetype="Perfmon:Process counter="Private Bytes"

With both of these searches, the field Value has the values for each perfmon counter. What i'm trying to do is rename the Value field IFthe counter field is cpu specific. So something like IF counter="% Processor Time" THEN | rename Value as process_cpu. This is to make it generic so I can do the same thing for linux machines with my linux data.

I've looked at EVAL and match but I didn't see a way to recognize a field value, and then change another fields value. Any suggestions are appreciated.

[mayurr98 · Accepted solution]

Try something like this if you want process_cpu field to have only Values of counter="% Processor Time"

<your_base_search> | eval process_cpu=case(counter="% Processor Time",Value)

Let me know if this helps you!

[micahkemp]

Maybe:

| eval process_cpu=if(counter="% Processor Time", Value, NULL), Value=if(counter="% Processor Time", NULL, Value)