/
courier_mta_mailvolume
executable file
·150 lines (120 loc) · 3.14 KB
/
courier_mta_mailvolume
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#!/usr/bin/perl -w
=encoding utf8
=head1 NAME
courier_mta_mailvolume - Plugin to monitor the volume og mails
delivered by courier-mta
=head1 CONFIGURATION
The following environment variables are used by this plugin:
logdir - Where to find logfiles
logfile - What file to read in logdir
=head1 AUTHOR
Rune Nordbøe Skillingstad <runesk@linpro.no>
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf
=cut
my $statefile = "$ENV{MUNIN_PLUGSTATE}/munin-plugin-courier_mta_mailvolume.state";
my $pos = undef;
my $volume = 0;
my $LOGDIR = $ENV{'logdir'} || '/var/log';
my $LOGFILE = $ENV{'logfile'} || 'mail.log';
my $COURIER = $ENV{'courier'} || '/usr/sbin/courier';
if ( $ARGV[0] and $ARGV[0] eq "autoconf" )
{
my $logfile;
if(-x $COURIER) {
if(-d $LOGDIR) {
$logfile = "$LOGDIR/$LOGFILE";
if(-f $logfile) {
if(-r "$logfile") {
print "yes\n";
exit 0;
} else {
print "no (logfile not readable)\n";
}
} else {
print "no (logfile not found)\n";
}
} else {
print "no (could not find logdir)\n";
}
} else {
print "no (could not find executable)\n";
}
exit 0;
}
my $logfile = "$LOGDIR/$LOGFILE";
my $prevdate = get_prev_date();
if(-f "$logfile.$prevdate") {
$rotlogfile = "$logfile.$prevdate";
} elsif (-f "$logfile.0") {
$rotlogfile = $logfile . ".0";
} elsif (-f "$logfile.1") {
$rotlogfile = $logfile . ".1";
} elsif (-f "$logfile.01") {
$rotlogfile = $logfile . ".01";
} else {
$rotlogfile = $logfile . ".0";
}
if(-f "$statefile") {
open (IN, "$statefile") or exit 4;
if(<IN> =~ /^(\d+):(\d+)/) {
($pos, $volume) = ($1, $2);
}
close IN;
}
if(! -f $logfile and ! -f $rotlogfile) {
print "volume.value U\n";
exit 0;
}
$startsize = (stat $logfile)[7];
if(!defined $pos) {
# Initial run.
$pos = $startsize;
}
if($startsize < $pos) {
# Log rotated
parseLogfile ($rotlogfile, $pos, (stat $rotlogfile)[7]);
$pos = 0;
}
parseLogfile ($logfile, $pos, $startsize);
$pos = $startsize;
if($ARGV[0] and $ARGV[0] eq "config") {
print "graph_title Courier MTA mailvolume throughput\n";
print "graph_category mail\n";
print "graph_args --base 1000 -l 0\n";
print "graph_vlabel bytes / \${graph_period}\n";
print "graph_scale no\n";
print "graph_total Total\n";
print "volume.label throughput\n";
print "volume.type DERIVE\n";
print "volume.min 0\n";
exit 0;
}
print "volume.value $volume\n";
if(-l $statefile) {
die("$statefile is a symbolic link, refusing to touch it.");
}
open (OUT, ">$statefile") or exit 4;
print OUT "$pos:$volume\n";
close OUT;
sub parseLogfile {
my ($fname, $start, $stop) = @_;
open (LOGFILE, $fname) or exit 3;
seek (LOGFILE, $start, 0) or exit 2;
while (tell (LOGFILE) < $stop) {
my $line =<LOGFILE>;
chomp ($line);
if($line =~ /(?:courierlocal|courieresmtp): id=.*,from=.*,addr=.*,size=(\d+),success:.*delivered/) {
$volume += $1;
}
}
close(LOGFILE);
}
sub get_prev_date {
my @date = localtime (time - 86400);
my $prevdate = $date[5]+1900 . $date[4]+1 . $date[3];
return $prevdate;
}