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#!/usr/bin/perl -w
# -*- perl -*-
=head1 NAME
fastd_peers_ - Plugin to monitor fastd peers
=head1 CONFIGURATION
Set user and group to have access to the socket
Set path to socketfile if not /tmp/fastd.sock
[fastd_peers_*]
user fastd
group fastd
env.socketfile /tmp/fastd.sock
=head1 USAGE
Link this plugin to /etc/munin/plugins/
After creating the links, restart munin-node. Don't forget to configure the plugin!
=head1 AUTHORS
Dominique Goersch <mail@dgoersch.info>
Niklas Yann Wettengel <niyawe@niyawe.de>
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=manual
=cut
use strict;
use warnings;
use File::Basename;
use IO::Socket::UNIX qw( SOCK_STREAM );
use JSON;
if ($ARGV[0] and $ARGV[0] eq "config") { #config graph
print "graph_title fastd peers\n";
print "graph_info This graph shows the peers of the fastd on this supernode\n";
print "graph_args -l 0\n";
print "graph_scale no\n";
print "graph_vlabel peers count\n";
print "graph_category fastd\n";
print "peers.label peers\n";
print "peers.draw AREA\n";
exit 0;
}
my $statusfile = exists $ENV{'socketfile'} ? $ENV{'socketfile'} : "/tmp/fastd.sock"; #get path to socket from environment or use default
my $socket = IO::Socket::UNIX->new(Type => SOCK_STREAM,Peer => $statusfile) #open socket
or die("Can't connect to server: $!\n");
my $fastdstatus = "";
foreach my $line (<$socket>) {$fastdstatus .= $line;} #read contents from socket
my $json = decode_json($fastdstatus); #decode json
#my $fastd_peers = scalar(keys(%{$json->{peers}})); #get number of peers from json
my $fastd_peers = 0;
for my $key (keys(%{$json->{peers}})) {
$fastd_peers = $fastd_peers + ($json->{peers}{$key}{connection}? 1 : 0);
}
print "peers.value $fastd_peers\n"; #return number of peers
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