topic Re: Foreach command with eval if in Splunk Search

Foreach command with eval if

mah — Mon, 03 Jan 2022 17:08:54 GMT

Hi,

I have a table like that :

test	state_A	state_B	state_C
1	ok	ko- WARN	ko - ERROR
2	ko- WARN	ok	ok
3	ok	ok	ok

I would like to create a field "global_state" with "done" value if all fields state_* value are "OK" , if not write "issue":

test	state_A	state_B	state_C	global_state
1	ok	ko- WARN	ko - ERROR	issue
2	ko- WARN	ok	ok	issue
3	ok	ok	ok	done

I tried this foreach but not working :

| foreach state_* [ eval global_state= if(<<FIELD>>=="ko- WARN" OR <<FIELD>>=="ko - ERROR", "issue", "done") ]

The second condition in the if is not applied.

Can you help me please?

Re: Foreach command with eval if

richgalloway — Mon, 03 Jan 2022 19:02:04 GMT

It looks like global_state will be set based only on the last field evaluated. See if this variation helps.

| eval ok_count = 0 | foreach state_* [ eval ok_count = ok_count + case(<<FIELD>>=="ko-WARN", 0, <<FIELD>>=="ko-ERROR", 0, 1==1, 1) ] | eval global_state = if(ok_count==3, "done", "issue")

Re: Foreach command with eval if

mah — Tue, 04 Jan 2022 15:05:06 GMT

Hi @richgalloway

Your example did not work, it gave me same issue than my search.

Re: Foreach command with eval if

PickleRick — Tue, 04 Jan 2022 15:20:38 GMT

Your issue is that you evaluate the field with each foreach call (as per the name).

So effectively you're getting only the final value. In the first row you're gonna get "issue" properly as the result because you have a "not OK" value in the last field but in the second row the global_state gets evaluated to "issue" for state_A but is immediately overwritten with "done" from state_B and then from state_C.

In such case you'd rather want to define an initial value beforehand and then overwrite it if there is a need to do so. Like

<your search>
| eval global_state="done"
| foreach state_*
   [ eval global_state=if(<<FIELD>>!="ok","issue",global_state) ]

This way you set your global_state initially to "done" and then if you encounter any value other than "ok" in any of the state_* fields, it's getting overwritten to "issue".

Re: Foreach command with eval if

johnhuang — Wed, 05 Jan 2022 05:06:44 GMT

Here are 2 ways to skin this cat.

| eval combined_state=TRIM(state_A)."-".TRIM(state_B)."-".TRIM(state_C) | eval global_state=IF(combined_state="ok-ok-ok", "done", "issue")

| foreach state_* [| eval combined_state=MVAPPEND(combined_state, TRIM(<<FIELD>>))] | eval combined_state=MVDEDUP(combined_state) | eval global_state=IF(MVCOUNT(combined_state)==1 AND combined_state="ok", "done", "issue")