perfsonar development work

["Luchesar V. ILIEV" <>]

Domenico Vicinanza wrote:
> Hi Nicolas,
>
> exactly,  in particular, if it is possible:
>
> [perfSONAR-SERVICE_ID] 
> [@LOCATION]
>  SEVERITY% DESCRIPTION
>
> It is important for us to have the serviceID in the first word of the 
> log: it is the way syslog-ng is able to detect the program which caused 
> the log and allows the proper classification in our database. For example:
>
> perfSONAR-RRDMA srv3.ams.nl.geant2.net WARNING  <description>
>
> It is better, to ease the parsing process, not to have dots (.) as 
> separator between location and severity, since the host names contain 
> dots too.

That's very good point, indeed. Concerning location, however, do you 
really prefer it to be hostname? E.g. for BREN/ISTF, the domain name 
will be... something.acad.bg. Not very intuitive, I'm afraid.

Anyway, if we'd like to do fast parsing, we could use something like this:

%pS-RRD_MA%srv3.ams.nl.geant2.net%WARNING% bla-bla-bla

I, personally, wouldn't be happy using spaces as delimiters, as they are 
basically ubiquitous, and so make a very difficult to handle delimiter.

The percent sign was inspired by, as you might've guessed, Cisco. It's 
quite rare, but even then perhaps we should impose a restriction on 
using it in the messages/descriptions themselves. Yet, as a beginning, I 
think it should be OK even without.

Sure, the percent sign makes the messages less legible, but it's a 
balance we must find: legibility vs ease of parsing (just like with the 
dots, BTW.)

Cheers,
Luchesar

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