I got some good replies to my other (first!) posting, so I thought I'd post my whole script here.

This script collects connection information from a F5 BigIP load-balancer (runs BSDi) and generates some nice graphs.

The data structures are really ugly, and I'd love to have some Wise Monks show me how to make this more efficent and clean.

Note: SimpleGraph is a homebrew module which I can not release due to licensing. 

#!/usr/bin/perl

use simplegraph;

# %client_ip = ();
# %frontend = ();
# %total_conn = ();

%vips = ();
%scale = ();
%name = ();

$iteration = 0;

# Set the graph max scale per server
$scale{'64.210.209.50'} = 3500;
$scale{'64.210.209.51'} = 2000;
$scale{'64.210.209.54'} = 3500;
$scale{'64.210.209.56'} = 100;
$scale{'64.210.209.61'} = 3000;
$scale{'64.210.209.132'} = 500;

# Set VIPs -> names mapping
$name{'64.210.209.50'} = 'www.zwire.com';
$name{'64.210.209.51'} = 'www.adquest3d.com';
$name{'64.210.209.54'} = 'bannerads.zwire.com';
$name{'64.210.209.56'} = 'sitemanager.zwire.com';
$name{'64.210.209.61'} = 'imagesource.zwire.com';
$name{'64.210.209.132'} = 'www.carcast.com';


# Loop forever
while(1) {

$iteration++;

# Reset data
@connections = `bigpipe conn dump`;

foreach $line (@connections) {
        if ($line =~ /^\s*(\d+\.\d+\.\d+\.\d+):\d+
                  \s*->\s*(\d+\.\d+\.\d+\.\d+):\d+
                  \s*->\s*(\d+\.\d+\.\d+\.\d+)/x) {
#               $client_ip{$1}{$iteration}++;
                $vips{$2}{$iteration}++;
#               $frontend{$3}{$iteration}++;
        }
}

# Push our new data onto the stack, but remove from the queue if we ha
+ve more than 50
foreach $k (keys %vips) {
        push @{$vips{$k}{'stack'}}, $vips{$k}{$iteration};
        if ( $#{ $vips{$k}{'stack'} } > 50 ) {
                shift @{$vips{$k}{'stack'}};
        }
}

# Make a graph for each VIP
foreach $k (keys %vips) {

        if ($name{$k}) {
                $label = $name{$k}." connections";
        } else {
                # Skip VIPs that aren't in %name, we don't care about 
+them
                next;
        }

        my $image = SimpleGraph->new(
                width => 230,
                height => 120,
                yscale => $scale{$k},
                marginwidth => 5,
                borderright => 5,
                borderleft => 30,
                gridlabels => yes,
                gridlines => ($scale{$k} / 4),
                label => $label,
);
        my $temp = $vips{$k}{'stack'};

        $image->PlotSeries(
                color => "0,0,255",
                data => $temp,
);
        $image->Draw(file => "/usr/local/www/local/connections$k.tmp")
+;
        `mv -f /usr/local/www/local/connections$k.tmp /usr/local/www/l
+ocal/connections$k.gif`;
}

sleep 10;

}

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<-> In general, we find that those who disparage a given operating system, language, or philosophy have never had to use it in pratice. <->

In reply to Need some data structures cooked by ibanix

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