Munin contributed plugins

#!/usr/bin/perl -w

# -*- perl -*-

# Wildcard plugin to monitor QoS queues.

#

# Requirements:

# 	- tc program installed and in path

#

# Parameters supported:

#

# 	config

# 	autoconf

# 	suggest

#

# Configurable variables

#

# 	tc                - Override default program

# 	ignore_queue<n>   - Queue with handle <n>  not be plotted

#       label_name<n>     - Queue with handle <n> as defined label

#

# Magic markers:

#%# family=manual

#%# capabilities=autoconf suggest

use strict;

my $TC = $ENV{'tc'} || 'tc';

if ($ARGV[0] and $ARGV[0] eq 'suggest') {

  my $text = `egrep '^ *(eth|wlan|ath|ra)[0-9]+:' /proc/net/dev | cut -f1 -d:`;

  print $text;

  exit;

}

$0 =~ /qos_(.+)*$/;

my $IFACE = $1;

exit 2 unless defined $IFACE;

if ( exists $ARGV[0] and $ARGV[0] eq 'autoconf' ) {

  # Now see if "tc" can run

  my $text = `$TC qdisc show dev $IFACE`;

  if ($?) {

    if ($? == -1) {

      print "no (program $TC not found)\n";

    } else {

      print "no (program $TC died)\n";

    }

    exit 1;

  }

  print "yes\n";

  exit 0;

}

my %queues;

my $qdisc;

my $queue;

my $handle;

my $one;

my $sent;

my $count;

my $haschild;

#open(TEXT, "$TC -s qdisc show dev $IFACE|");

#while (! eof(TEXT)) {

#  ($qdisc, $queue, $handle) = split(" ", <TEXT>);

#  if ($qdisc eq "backlog") {

#    ($qdisc, $queue, $handle) = split(" ", <TEXT>);

#  }

#  ($one, $sent) = split(" ", <TEXT>);

#  $handle =~ s/://;

#  $queues{$handle} = {

#    queue => $queue,

#    handle => $handle,

#    sent => $sent

#  };

#}

my @class = `$TC -s class show dev $IFACE`;

my( $name, $id1, $id2, $type, $rate, $parent);

for( my $x = 0; $x < scalar(@class); $x++ ) {

    if($class[$x] =~ m/^class/i ) {

	( $name, $id1, $id2, $type, $parent) = ( $class[$x] =~ m/^class\s+(\w+)\s+(\d+):(\d+)\s+(\w+)\s([^\s]+)/i );

	if($type eq "parent") {

	    $x++;

    	    ( $rate ) = ( $class[$x] =~ m/Sent\s+(\d+)\s+/i );

	    $handle = "$name"."${id1}_${id2}";

	    $queues{$handle} = {

		queue => $name,

		handle => "${id1}_${id2}",

		id => "${id1}:${id2}",

		sent => $rate,

		parent => $parent

	    };

	}

    }

}

if ( exists $ARGV[0] and $ARGV[0] eq 'config' ) {

  print "graph_title QoS queue on $IFACE\n";

  print "graph_args --base 1000\n";

  print "graph_vlabel bits per \${graph_period}\n";

  print "graph_category network\n";

  print "graph_info This graph shows the QoS queue of the $IFACE network interface.\n";

  print "graph_order ";

  foreach my $key (sort by_handle keys %queues) {

    $haschild = 0;

    foreach my $key2 (sort by_handle keys %queues) {

	if($queues{$key}->{id} eq $queues{$key2}->{parent}) {

	    $haschild = 1;

	    last;

	}

    }

    if($haschild == 1) { 

	$queues{$key}->{leaf} = 0;

	next; 

    }

    $queues{$key}->{leaf} = 1;

    print $queues{$key}->{queue},$queues{$key}->{handle}, " ";

  }

  print "\n";

  $count = 0;

  foreach my $key (sort by_handle keys %queues) {

    if($queues{$key}->{leaf} == 0) { next; }

    print $queues{$key}->{queue},$queues{$key}->{handle}, ".label ";

    if (exists $ENV{"label_name$queues{$key}->{handle}"}) {

      print $ENV{"label_name$queues{$key}->{handle}"};

    } else {

      print $queues{$key}->{queue},$queues{$key}->{handle};

    }

    print "\n";

    if (exists $ENV{"max"}) {

      print $queues{$key}->{queue},$queues{$key}->{handle}, ".max ",$ENV{"max"},"\n";

    } elsif (exists $ENV{"max$queues{$key}->{handle}"}) {

      print $queues{$key}->{queue},$queues{$key}->{handle}, ".max ",$ENV{"max$queues{$key}->{handle}"},"\n";

    }

    print $queues{$key}->{queue},$queues{$key}->{handle}, ".type COUNTER\n";

    if($count == 0){

	print $queues{$key}->{queue},$queues{$key}->{handle}, ".draw AREA\n";

    } else {

	print $queues{$key}->{queue},$queues{$key}->{handle}, ".draw STACK\n";

    }

    print $queues{$key}->{queue},$queues{$key}->{handle}, ".cdef ", $queues{$key}->{queue},$queues{$key}->{handle}, ",8,*\n";

    if (exists $ENV{"ignore_queue$queues{$key}->{handle}"}){

	print $queues{$key}->{queue},$queues{$key}->{handle}, ".graph no\n" ;

    } else {

	$count++;

    }

  }

  exit 0;

}

sub by_handle {

  return $a cmp $b;

}

foreach my $key (sort by_handle keys %queues) {

    $haschild = 0;

    foreach my $key2 (sort by_handle keys %queues) {

	if($queues{$key}->{id} eq $queues{$key2}->{parent}) {

	    $haschild = 1;

	    last;

	}

    }

    if($haschild == 1) { next; }

  print $queues{$key}->{queue},$queues{$key}->{handle}, ".value ",$queues{$key}->{sent}, "\n";

}

#

# vim:syntax=perl