APC Cache munin plugin

php_apc_

#!/usr/bin/perl
#
# Magic markers:
#%# family=auto
#%# capabilities=autoconf

use strict;
use Munin::Plugin;

need_multigraph();

my $ret = undef;

if (! eval "require LWP::UserAgent;")
{
    $ret = "LWP::UserAgent not found";
}

my $URL = exists $ENV{'url'} ? $ENV{'url'} : "http://127.0.0.1:%d/munin/apc_info.php?auto";
my @PORTS = exists $ENV{'ports'} ? split(' ', $ENV{'ports'}) : (80);

if ( defined $ARGV[0] and $ARGV[0] eq "autoconf" )
{
    if ($ret)
    {
        print "no ($ret)\n";
        exit 1;
    }

    my $ua = LWP::UserAgent->new(timeout => 30);

    my @badports;
    foreach my $port (@PORTS) {
        my $url = sprintf $URL, $port;
        my $response = $ua->request(HTTP::Request->new('GET',$url));
        push @badports, $port unless $response->is_success and $response->content =~ /^size:/im;
    }
    if (@badports) {
        print "no (apc-status)\n";
        exit 1;
    } else {
        print "yes\n";
        exit 0;
    }
}

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

$0 =~ /php_apc_(.+)*/;
my $plugin = $1;

## PHP APC Cache Usage
if($plugin eq 'usage') {
print('multigraph php_apc_usage
graph_title Cache Usage
graph_args --base 1024 -l 0
graph_vlabel Bytes
graph_category php-apc
graph_order used free
graph_total Total
used.label Used Memory
used.draw AREASTACK
fragmented.label Fragmented Memory
fragmented.draw AREASTACK
free.label Available Memory
free.draw AREASTACK
');
}

## PHP APC Hit / Miss by percentage
elsif($plugin eq 'hit_miss') {
print('multigraph php_apc_hit_miss
graph_title Cache Hits / Misses
graph_args --base 1000 --lower-limit 0 --upper-limit 100 --rigid
graph_vlabel Percent
graph_category php-apc
graph_total Total
hits.label Hits
hits.draw AREA
hits.min 0
misses.label Misses
misses.draw STACK
misses.min 0
misses.warning 50
');
}

## PHP APC Purge rate (# Entries / Inserts)
elsif($plugin eq 'purge') {
print('multigraph php_apc_purge
graph_title Purge rate
graph_args --base 1000 --lower-limit 0 --upper-limit 100 --rigid
graph_vlabel Percent
graph_category php-apc
purge_rate.label Purge Rate
purge_rate.draw LINE2
purge_rate.min 0
purge_rate.warning 10
');
}

## PHP APC Fragmentation
elsif($plugin eq 'fragmentation') {
print('multigraph php_apc_fragmentation
graph_title Fragmentation
graph_args --base 1000 --upper-limit 100
graph_vlabel Percent
graph_category php-apc
fragment_percentage.label Fragmentation Percent
fragment_percentage.draw LINE2
fragment_percentage.min 0
fragment_percentage.warning 10
');
}

## PHP APC Number of files in cache
elsif($plugin eq 'files') {
print('multigraph php_apc_files
graph_title Files in Cache
graph_args -l 0
graph_vlabel Number of Files
graph_category php-apc
entries.label Number of files
entries.draw LINE2
entries.min 0
');
}

## PHP APC Rates
elsif($plugin eq 'rates') {
print('multigraph php_apc_rates
graph_title Hit, Miss and Insert Rates
graph_args --base 1000
graph_vlabel Cache Requests / Second
graph_category php-apc
request_rate.label Request rate (Hits + Misses)
request_rate.draw LINE2
request_rate.min 0
hit_rate.label Hit rate
hit_rate.draw LINE2
hit_rate.min 0
miss_rate.label Miss rate
miss_rate.draw LINE2
miss_rate.min 0
insert_rate.label Insert rate
insert_rate.draw LINE2
insert_rate.min 0
');
}

exit 0;
}

foreach my $port (@PORTS)
{
    my $ua = LWP::UserAgent->new(timeout => 30);
    my $url = sprintf $URL, $port;
    my $response = $ua->request(HTTP::Request->new('GET',$url));

    if ($response->content =~ /used:\s+([0-9\.]+)/im) {
        print "used.value $1\n";
    } else {
        print "used.value U\n";
    }
    if ($response->content =~ /free:\s+([0-9\.]+)/im) {
            print "free.value $1\n";
    } else {
            print "free.value U\n";
    }

    if ($response->content =~ /hits:\s+([0-9\.]+)/im) {
            print "hits.value $1\n";
    } else {
            print "hits.value U\n";
    }

    if ($response->content =~ /misses:\s+([0-9\.]+)/im) {
            print "misses.value $1\n";
    } else {
            print "misses.value U\n";
    }

    if ($response->content =~ /request_rate:\s+([0-9\.]+)/im) {
            print "request_rate.value $1\n";
    } else {
            print "request_rate.value U\n";
    }

    if ($response->content =~ /hit_rate:\s+([0-9\.]+)/im) {
            print "hit_rate.value $1\n";
    } else {
            print "hit_rate.value U\n";
    }

    if ($response->content =~ /miss_rate:\s+([0-9\.]+)/im) {
            print "miss_rate.value $1\n";
    } else {
            print "miss_rate.value U\n";
    }

    if ($response->content =~ /insert_rate:\s+([0-9\.]+)/im) {
            print "insert_rate.value $1\n";
    } else {
            print "insert_rate.value U\n";
    }

    if ($response->content =~ /entries:\s+([0-9]+)/im) {
            print "entries.value $1\n";
    } else {
            print "entries.value U\n";
    }

    if ($response->content =~ /inserts:\s+([0-9]+)/im) {
            print "inserts.value $1\n";
    } else {
            print "inserts.value U\n";
    }

    if ($response->content =~ /purges:\s+([0-9]+)/im) {
            print "purges.value $1\n";
    } else {
            print "purges.value U\n";
    }

    if ($response->content =~ /purge_rate:\s+([0-9\.]+)/im) {
            print "purge_rate.value $1\n";
    } else {
            print "purge_rate.value U\n";
    }

    if ($response->content =~ /fragmented:\s+([0-9\.]+)/im) {
            print "fragmented.value $1\n";
    } else {
            print "fragmented.value U\n";
    }

    if ($response->content =~ /fragment_segments:\s+([0-9]+)/im) {
            print "fragment_segments.value $1\n";
    } else {
            print "fragment_segments.value U\n";
    }

    if ($response->content =~ /fragment_percentage:\s+([0-9\.]+)/im) {
            print "fragment_percentage.value $1\n";
    } else {
            print "fragment_percentage.value U\n";
    }
}

# vim:syntax=perl