Munin contributed plugins

#!/usr/bin/perl -w

#

# xmlrpc based munin plugin for monitoring rtorrent's memory usage

# prerequisites:

#  - rtorrent 0.7.5 or newer compiled with --with-xmlrpc-c

# check http://libtorrent.rakshasa.no/wiki/RTorrentXMLRPCGuide for further information

#

# written by Gabor Hudiczius

# web: http://projects.cyla.homeip.net/rtwi/wiki/rTorrentOMeter

# email: ghudiczius@gmail.com

#

# 0.2.0 - 080619

#  support for scgi_port and scgi_local

#  configurable via munin env variables

#  initial release

#

#

# Parameters:

#

#       config          required

#

#

# Configurable variables

#

#       src             "socket" when using scgi_socket, or anything else when using scgi_port

#       socket          rTorrent's rpc socket (scgi_local)      - using scgi_local      - needed, when "src" is set to "socket"

#       ip              rTorrent's ip address                   - using scgi_port       - needed, when "src" is NOT set to "socket"

#       port            rTorrent's scgi port (scgi_port)        - using scgi_port       - needed, when "src" is NOT set to "socket"

#       category        Change graph category

#

# Configuration example

#

#       [rtom_allsessions_*]

#       user username

#       env.src socket

#       env.socket /home/user/torrent/.socket/rpc.socket,/home/user/torrent/.socket/rpc.socket

#       env.category Category

#

#       [rtom_allsessions_*]

#       user username

#       env.port 5000,5001,5002,5003

#       env.category Category

#

#%# family=auto

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

        exit 1;

}

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

        my $category = $ENV{"category"} || "";

        print "graph_title rTorrent memory usage\n";

        print "graph_args --base 1024 --lower-limit 0\n";

        print "graph_vlabel Bytes\n";

        print "graph_category filetransfer".${category}."\n";

        print "mem.label Memory usage\n";

        print "mem.info Memory usage of rTorrent\n";

        print "mem.type GAUGE\n";

        print "mem.draw LINE2\n";

        exit 0;

}

use IO::Socket;

my $src         = $ENV{"src"} || "";

my @sockets     = split /,/, $ENV{"socket"} || "";

my $ip          = $ENV{"ip"} || "127.0.0.1";

my @ports       = split /,/, $ENV{"port"} || "";

my $mem = 0;

my $pattern     = qr/<value><(int|i4|i8|ex\.i8)>(\d+)<\/(int|i4|i8|ex\.i8)><\/value>/;

my $line        = "<?xml version=\"1.0\" encoding=\"utf-8\"?><methodCall><methodName>get_memory_usage</methodName></methodCall>";

my $llen        = length $line;

my $header      = "CONTENT_LENGTH\000${llen}\000SCGI\001\000";

my $hlen        = length $header;

if ( ( defined $src ) && ( $src eq "socket" ) ) {

        for $socket (@sockets)

        {

                socket( SOCK, PF_UNIX, SOCK_STREAM, 0 ) or die;

                connect( SOCK, sockaddr_un( $socket ) ) or die $!;

                my $line = "${hlen}:${header},${line}";

                print SOCK $line;

                flush SOCK;

                while ( $line = <SOCK> ) {

                        if ( $line =~ /$pattern/ ) {

                                $mem = $mem + $2;

                        }

                }

                close (SOCK);

        }        

} else {

        for $port (@ports)

        { 

                socket( SOCK, PF_INET, SOCK_STREAM, getprotobyname( "tcp" ) );

                connect( SOCK, sockaddr_in( $port, inet_aton( $ip ) ) );

                my $line = "${hlen}:${header},${line}";

                print SOCK $line;

                flush SOCK;

                while ( $line = <SOCK> ) {

                        if ( $line =~ /$pattern/ ) {

                                $mem = $mem + $2;

                        }

                }

                close (SOCK);

        }

}

print "mem.value ${mem}\n";

exit;