sounds good! --> https://github.com/rsyslog/rsyslog/pull/4456

Rainer

El mar., 3 nov. 2020 a las 12:12, Nicholas Brown via rsyslog
(<[email protected]>) escribió:
>
> An alternative that could be useful would be just make a unix timestamp
> (with full second resolution) directly available as a variable.
> Perhaps something like $now-unix?
> The implementation of this could even avoid having to parse time formats,
> thus be quick.
> Looking at
> https://github.com/rsyslog/rsyslog/blob/11b58367dda661c6b991122174faeb6463e5a919/runtime/datetime.c#L175:13
> it appears
> getCurrTime can already provide the unix seconds, and getTime() is
> available that does only that.
>
> On Tue, 3 Nov 2020 at 10:24, Nicholas Brown <[email protected]>
> wrote:
>
> > Hi,
> >
> > Thanks for the reply.
> >
> > I had found these issues:
> > https://github.com/rsyslog/rsyslog/issues/3329 (Enhancement to $now
> > property)
> > https://github.com/rsyslog/rsyslog/issues/3930 (Properties timegenerated
> > and timereported are not high precision in the RainerScript context)
> >
> > For our use we are looking for something with second granularity, and in
> > UTC.
> > $timegenerated has second granularity, but there is no $timegenerated-utc
> > available.
> > $now and $now-utc both only have granularity to the day.
> >
> > A simple example of the use case for the property in a rules might be:
> >
> > # Get Unix timestamp of current message
> > set $.tnow = parse_time($timegenerated);
> >
> > # Rate limit info to 5 every 60 seconds
> > if ($!severity == 6 and $!facility == 17) then {
> >   if (($.tnow - $/trate) > 60) then {
> >     # 5 seconds window expired, allow more messages
> >     set $/trate = $.tnow;
> >     set $/ratecount = 0;
> >   }
> >   if ($/ratecount > 5) then {
> >     # discard message
> >     stop
> >   } else {
> >     set $/ratecount = $/ratecount + 1;
> >   }
> > }
> >
> > Would it be possible to add a $timegenerated-utc property?
> > Any pointers into the rsyslog code on where this might be implemented
> > would be welcome, and we could take a look.
> >
> > Thanks,
> > Nick
> >
> > On Mon, 2 Nov 2020 at 20:59, John Chivian via rsyslog <
> > [email protected]> wrote:
> >
> >> Time. What is time anyway?  The easiest way to solve your problem is to
> >> punt and log everything in high resolution UTC.  Or you could log
> >> everything with high resolution local time (including TZ offset). Or you
> >> could set your entire logging infrastructure use UTC only.  At least
> >> then you wouldn't have the problem of the wobbling hour.
> >>
> >> All that aside, there is already an enhancement request for a high
> >> resolution $now but it's a low priority item with not much momentum.
> >> Such a thing would return server local time regardless of the timezone
> >> setting on the server (which would of course be UTC).
> >>
> >> The current $now (as you've discovered) is a low resolution string, not
> >> an actual timestamp that can be cast with a format.
> >>
> >> Regards,
> >>
> >>
> >> On 11/2/20 12:14 PM, Nicholas Brown via rsyslog wrote:
> >> > Hi,
> >> >
> >> > I'm looking for a useful monatomic timestamp property that can be used
> >> for
> >> > rate-limiting calculations in rules.
> >> >
> >> > 'parse_time($timegenerated)' mostly works, but when there are local time
> >> > adjustments happen like daylight saving and time goes backwards.
> >> >
> >> >
> >> https://www.rsyslog.com/doc/master/configuration/properties.html#system-properties
> >> >
> >> https://www.rsyslog.com/doc/master/rainerscript/functions/rs-parse_time.html
> >> >
> >> > A $timegenerated-utc property would not have daylight saving timezone
> >> > issues, but does not appear to be available. Similar $now-utc is
> >> available,
> >> > but it does not have second resolution to be useful to convert to a unix
> >> > timestamp with parse_time().
> >> >
> >> > Is there a high precision utc timestamp property available?
> >> >
> >> > Thanks,
> >> > Nick
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