[rrd-developers] Re: rrd fetch AT TIME SPECIFICATION inconsistency?

[Tobias Oetiker]

Hi Greg,

I guess this will help:

Index: parsetime.c
===================================================================
--- parsetime.c (revision 895)
+++ parsetime.c (working copy)
@@ -839,6 +839,7 @@
     case NUMBER:
            try(tod(ptv))
             try(day(ptv))
+            try(tod(ptv))
             break;
     /* fix month parsing */
     case JAN: case FEB: case MAR: case APR: case MAY: case JUN:


cheers
tobi
Today Greg Bailey wrote:

> I had an application break when moving from rrdtool 1.0.X to 1.2.X, and
> after escaping the colon characters in the COMMENT sections of rrdgraph,
> I discovered another inconsistency.  I'd been using timestamps of the
> form "20060918 13:20" as a start and/or end time in rrdfetch, and while
> this used to work in rrdtool 1.0.50, it stopped working in the newer
> version.
>
> The man page for rrdfetch gives lots of example time specifications,
> including:
>
>        19970703 12:45 -- 12:45  July 3th, 1997 (my favorite, and its
> even got an ISO number (8601)).
>
> But that invocation gives an error for me:
>
> # rrdtool fetch FastEthernet0-21.rrd AVERAGE -e '19970703 12:45'
> ERROR: end time: unparsable trailing text: '...12:45'
>
> But switching the "TIME OF DAY" and the "DAY" references gives:
>
> # rrdtool fetch FastEthernet0-21.rrd AVERAGE -e '12:45 19970703'
>                      ifInOctets         ifOutOctets
>
>  867888000: nan nan
>  867974400: nan nan
>
> So it seems the documentation for AT STYLE TIME SPECIFICATIONS could be
> updated with legal examples, and it might be worth adding a note to the
> RRDTOOL 1.2 NEWS page.
>
> thanks,
> Greg Bailey
>
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-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten
http://tobi.oetiker.ch tobi at oetiker.ch ++41 62 213 9902

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