Munin contributed plugins

#!/usr/bin/perl -w

#

## Copyright (C) 2010 KARASZI Istvan <http://raszi.hu/>

##

## This program is free software; you can redistribute it and/or

## modify it under the terms of the GNU General Public License

## as published by the Free Software Foundation; version 2 dated June,

## 1991.

##

## This program is distributed in the hope that it will be useful,

## but WITHOUT ANY WARRANTY; without even the implied warranty of

## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

## GNU General Public License for more details.

##

## You should have received a copy of the GNU General Public License

## along with this program; if not, write to the Free Software

## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

##

#

use strict;

use Redis;

use Time::HiRes qw( gettimeofday tv_interval );

my $HOST = exists $ENV{'host'} ? $ENV{'host'} : "127.0.0.1";

my $PORT = exists $ENV{'port'} ? $ENV{'port'} : 6379;

my $PASSWORD = exists $ENV{'password'} ? $ENV{'password'} : undef ;

my $server = "$HOST:$PORT";

my $r = Redis->new( server => $server, password => $PASSWORD );

my $config = ( defined $ARGV[0] and $ARGV[0] eq "config" );

sub get_time {

    my ($times, $func) = @_;

    my $start = [ gettimeofday ];

    for (my $i = 0; $i < $times; $i++) {

        $func->();

    }

    return sprintf("%f", tv_interval($start) / $times);

}

if ( $config ) {

    print "graph_title Response time\n";

    print "graph_vlabel Response time\n";

    print "ping.label PING time\n";

    print "get.label GET time\n";

    print "set.label SET time\n";

    print "graph_category redis\n";

    exit 0;

}

my $key = "test-key";

my $times = 20;

print "ping.value " . &get_time( $times, sub { $r->ping(); }) . "\n";

print "set.value " . &get_time( $times, sub { $r->set($key => 'SET ' . $key . ' 1'); }) . "\n";

print "get.value " . &get_time( $times, sub { $r->get($key); }) . "\n";

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