[syslog-ng] Dynamic setting value out of message?

Matthias Gruber MGruber at metzler.com
Tue Jun 29 08:42:23 UTC 2021


I hope it is simple and my thoughts and seeks about it were to complicated 
:-), simply I didnt know how to do that, perhaps someone has a clue for me

I am getting e.g. messages like
"MESSAGE": "UIMUC4Maintenance.py: \"== deactivate_uc4_monitoring = ENDE 
(thats out of an JSON-formatted syslog-ng output),

What I would like to do is, to extract the 'UIMUC4Maintenance.py:' and put 
it into a SDATA-Custom-Variable or PROG but based on a regex

so some sort of rewrite-rule like (no not a correct syntax, only to 
describe it)
rewrite r_fill_program {
  set(match("^\w*\.py:" value("MESSAGE")) value("PROG"));

As far as I understand it, set requires a "string" as first parameter, I 
could use a lots of rewrites with a condition, but I am in "lack of a 
static string", this should be some sort of variable :-)
or I could do that static with a filter for every "^\w*\.py:"-Text, but I 
hope I could do that dynamic, every time a match of my regex syslog-ng 
inserts that part into a variable and so on...

Is that possible?



Matthias Gruber 
IT-Infrastruktur & -Betrieb

B. Metzler seel. Sohn & Co.
Untermainanlage 1
60329 Frankfurt am Main
Telefon (0 69) 21 04 - 43 30
Telefax (0 69) 21 04 - 40 40
MGruber at metzler.com


Vorstand: Harald Illy, Emmerich Müller, Gerhard Wiesheu
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Sitz der Gesellschaft: Frankfurt am Main, Handelsregister-Nr. HRB 123 365

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