Re: Shepherd log rotation service

[Felix Lechner via "Development of GNU Guix and the GNU System distribution." <guix-devel@gnu.org>]

Hi Ludo',

On Sat, May 18 2024, Ludovic Courtès wrote:

> I’ve just pushed a simple log rotation service for Shepherd:

I have a patch removing rottlog from all Guix "services" that use the
Shepherd's :log-file feature, which works fine.  Do I need to provide a
Guix "service" for the log rotation?

If so, may I somehow reuse the Shepherd service definition [1] which
doesn't contain any G-exps, in the Guix "service" definition, which
does?

This won't work:

--8<---------------cut here---------------start------------->8---
    (define (log-rotation-shepherd-service config)
      (match-record
          config <log-rotation-configuration> (compression
                                               calendar-event
                                               expiry
                                               size-threshold)
    
        #~((log-rotation-service #$calendar-event
            #:compression #$compression
            #:expiry #$expiry
            #:rotation-size-threshold #$size-threshold))))
--8<---------------cut here---------------end--------------->8---
    
Thank you for your help, and thanks for the recent syslog announcement!

Kind regards
Felix

[1] https://git.savannah.gnu.org/cgit/shepherd.git/tree/modules/shepherd/service/log-rotation.scm?h=devel#n219