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AmqpGraphite.pm
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AmqpGraphite.pm
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package Collectd::Plugins::AmqpGraphite;
use strict;
use warnings;
use Collectd qw( :all );
use threads::shared;
use Net::RabbitMQ;
=head1 NAME
Collectd::Plugins::AmqpGraphite - Send collectd metrics to AMQP in graphite format, based on Collectd::Plugins::Graphite by Joe Miller
=head1 VERSION
Version 1
=cut
our $VERSION = '1';
=head1 SYNOPSIS
This is a collectd plugin for sending collectd metrics to AMQP in graphite format.
In your collectd config:
<LoadPlugin "perl">
Globals true
</LoadPlugin>
<Plugin "perl">
BaseName "Collectd::Plugins"
LoadPlugin "AmqpGraphite"
<Plugin "AmqpGraphite">
Buffer "256000"
Prefix "datacenter"
Host "amqp.host"
Port "2003"
User "amqpuser"
Password "amqppass"
Exchange "exchangename"
VHost "/virtualhost"
</Plugin>
</Plugin>
=head1 AUTHOR
Mark Steele, C<< <mark at control-alt-del.org> >>, original author of graphite plugin Joe Miller
=cut
my $buff :shared;
my $buffer_size = 8192;
my $prefix;
my $host = 'localhost';
my $port = 5672;
my $user;
my $password;
my $exchange;
my $vhost;
sub amqp_graphite_config {
my ($ci) = @_;
foreach my $item (@{$ci->{'children'}}) {
my $key = lc($item->{'key'});
my $val = $item->{'values'}->[0];
if ($key eq 'buffer' ) {
$buffer_size = $val;
} elsif ($key eq 'prefix' ) {
$prefix = $val;
} elsif ($key eq 'host') {
$host = $val;
} elsif ($key eq 'port') {
$port = $val;
} elsif ($key eq 'user') {
$user = $val;
} elsif ($key eq 'password') {
$password = $val;
} elsif ($key eq 'exchange') {
$exchange = $val;
} elsif ($key eq 'vhost') {
$vhost = $val;
}
}
return 1;
}
sub amqp_graphite_write {
my ($type, $ds, $vl) = @_;
my $host = $vl->{'host'};
$host =~ s/\./_/g;
my $plugin_str = $vl->{'plugin'};
my $type_str = $vl->{'type'};
if ( defined $vl->{'plugin_instance'} ) {
$plugin_str .= "-" . $vl->{'plugin_instance'};
}
if ( defined $vl->{'type_instance'} ) {
$type_str .= "-" . $vl->{'type_instance'};
}
my $bufflen;
{
lock($buff);
for (my $i = 0; $i < scalar (@$ds); ++$i) {
my $graphite_path = sprintf "%s.%s.%s.%s.%s",
$plugin_str,
$type_str,
$ds->[$i]->{'name'},
$prefix,
$host;
# convert any spaces that may have snuck in
$graphite_path =~ s/\s+/_/g;
$buff .= sprintf "%s %s %d\n",
$graphite_path,
$vl->{'values'}->[$i],
$vl->{'time'};
}
$bufflen = length($buff);
}
if ( $bufflen >= $buffer_size ) {
send_to_amqp();
}
return 1;
}
sub send_to_amqp {
# Best effort to send
lock($buff);
return 0 if !length($buff);
my $mq = Net::RabbitMQ->new();
eval { $mq->connect($host , { port => $port, user => $user, password => $password, vhost => $vhost }); };
if ($@ eq '') {
eval {
$mq->channel_open(1);
$mq->publish(1, '', $buff, { exchange => $exchange });
$mq->disconnect();
};
if ($@ ne '') {
plugin_log(LOG_ERR, "AmqpGraphite.pm: error publishing to amqp, losing data");
}
} else {
plugin_log(LOG_ERR, "AmqpGraphite.pm: failed to connect to amqp, losing data");
}
$buff = '';
return 1;
}
sub amqp_graphite_flush {
send_to_amqp();
return 1;
}
plugin_register (TYPE_CONFIG, "AmqpGraphite", "amqp_graphite_config");
plugin_register (TYPE_WRITE, "AmqpGraphite", "amqp_graphite_write");
plugin_register (TYPE_FLUSH, "AmqpGraphite", "amqp_graphite_flush");
1; # End of Collectd::Plugins::AmqpGraphite