Hi Bradley.
On Thu, Mar 09, 2006 at 03:27:34PM +0000, Bradley Kite wrote:
> Thanks Andreas,
> Thats one step closer than I was, however I'm writing my reporting software
> in perl
So did I ;)

> and was hoping there would be a nice interface to this kind of data (use
> RRDs; RRDs::fetch() etc.)
> without having to parse the output from an XML file.
So do I ;)
Calling RRDs::xport returns with an array containing:

my ($start,$end,$step,$columcnt,$legend,$data)=RRDs::xport(@cmd);

With this information you can loop over the the data like this:

  foreach my $row (@$data)
  {
    (undef,my $min,my $hour,my $mday,my $mon,my $year,undef,undef,undef)=localtime($start);

    $line.=sprintf("%u\t%02u-%s-%04u %02u:%02u",$start,$mday,$Months[$mon],$year+1900,$hour,$min);

    $start+=$step;
    foreach my $val (@$row)
    {
      if ($val ne '')
      {
        $line.=sprintf("\t%.2f",$val);
      } else
      {
        $line.=sprintf("\tNaN\n",$val);
      }
    }
  }

See ... No need to call a XML parser ;)

You can take a look in the file shared-demo.pl bundled with rrdtool in the examples
directory.

HTH,

Andreas.

-- 
Dipl.-Ing. Andreas Maus             science+computing ag
System Administration               Hagellocher Weg 71-75
mail: a.maus@science-computing.de   72070 Tuebingen, Germany
tel.: +49 7071 9457 456             www.science-computing.de

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