Munin contributed plugins

#!/usr/bin/perl

#

# Written by Gene Cutler, February 2011

# Loosely based on postfix_mailstats

# Graphs various qpsmtpd responses (greylisting, bad recipient, bad sender, etc.)

#

# config:

# [qpsmtpd_mailstats]

#  env.logfile - Full path to qpsmtpd logfile, default = '/var/log/qpsmtpd/qpsmtpd.log'

#

# Parameters understood:

#

#       config   (required)

#       autoconf (optional - used by munin-config)

#

#

#%# family=auto

use strict;

my $LOGFILE = $ENV{'logfile'} || '/var/log/qpsmtpd/qpsmtpd.log';

my $STATEFILE= $ENV{MUNIN_PLUGSTATE} . '/qpsmtpd_mailstats.state';

my $LINE_N = 0;

my %REJECT_CODES = (

   250 => '250 queued',

   450 => '450 greylisted',

   451 => '451 bad recipient',

   501 => '501 bad sender',

   503 => '503 MAIL first',

   550 => '550 bad dnsbl',

   554 => '554 spamtrap',

);

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

    do_config();

    exit(0);

}

$LINE_N = get_state();

$LINE_N ||= 0;

sub get_state {

	my $fh;

    open $fh,$STATEFILE;

	$_ = <$fh>;

	close $fh;

	/^(\d+)$/;

	return $1;

}

sub save_state {

	my $n = shift;

	my $fh;

	open $fh, ">$STATEFILE";

	print $fh "$n\n";

	close $fh;

}

do_stats($LINE_N);

sub do_stats {

    my $start_at = shift; 

    my $fh;

    my $stop_at = (stat $LOGFILE)[7];

    $start_at = 0 if $stop_at < $start_at;

	my %counts = ();

	open $fh, $LOGFILE or die "$!: $LOGFILE";

	seek $fh, $start_at, 0 if $start_at > 0;

	my $where;

   while (($where = tell $fh) < $stop_at) {

		my $line = <$fh>;

		if ($line =~ /: 250 Queued!/) {

			$counts{'250'}++;

        } elsif ($line =~ /: (\d+)/ and defined $REJECT_CODES{$1}) {

			$counts{$1}++;

        }

    }

	close $fh;

	save_state($stop_at);

	foreach my $rc (sort {$a<=>$b} keys %REJECT_CODES) {

		$counts{$rc} ||= 0;

		print "r$rc.value $counts{$rc}\n";

	}

}

sub do_config {

    my $k;

    print "graph_title QPSMTPD Responses

graph_category QPSMTPD

graph_args --base 1000 -l 0

graph_vlabel responses / \${graph_period}

graph_scale  no

graph_period minute

graph_total  Total

";

    get_state();

    my $type;

    foreach $k (sort {$a<=>$b} keys %REJECT_CODES) {

        print 

"r$k.label $REJECT_CODES{$k}

r$k.type ABSOLUTE

r$k.min 0

r$k.draw AREASTACK

";

    }

};

# vim:syntax=perl