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Rodolphe Quideville 2011-06-03 11:38:59 +02:00 committed by Steve Schnepp
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plugins/other/geowebcache-cache-hits-ratio Executable file
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#!/usr/bin/perl
# -*- perl -*-
# Author Rodolphe Quiédeville <rodolphe@quiedeville.org>
# Licence : GPLv2
# Code based on tomcat_volume plugin by
# Rune Nordbøe Skillingstad <runesk@linpro.no>
=head1 NAME
geowebcache_volume - Plugin to monitor the cache hit ratio of GeoWebCache
servers.
version 1.0.1
=head1 CONFIGURATION
The following environment variables are used by this plugin
=over 4
=item timeout
Connection timeout
=item url
Override default status-url
=item ports
HTTP port numbers
=back
=head2 CONFIGURATION EXAMPLE
[geowebcache_ratio]
env.url localhost:%d/geoserver/gwc
env.ports 8081
=head1 AUTHOR
Rodolphe Quiédeville <rodolphe@quiedeville.org>
=head1 USAGE
Needs access to
http://localhost:8080/gwc (or modify the address for another host).
If geowebcache is used inside GeoServer the url will be
http://localhost:8080/geoserver/gwc
GeoWebCache 1.2 or higher.
Tip: To see if it's already set up correctly, just run this plugin
with the parameter "autoconf". If you get a "yes", everything should
work like a charm already.
=head1 MAGIC MARKERS
#%# family=contrib
#%# capabilities=autoconf
=cut
use strict;
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/geowebcache/home";
my $PORT = exists $ENV{'ports'} ? $ENV{'ports'} : 8080;
my $TIMEOUT = exists $ENV{'timeout'} ? $ENV{'timeout'} : 30;
my $url = sprintf $URL, $PORT;
if(exists $ARGV[0] and $ARGV[0] eq "autoconf") {
if($ret) {
print "no ($ret)\n";
exit 0;
}
my $au = LWP::UserAgent->new(timeout => $TIMEOUT);
my $response = $au->request(HTTP::Request->new('GET',$url));
if($response->is_success and $response->content =~ /GWC Home/im) {
print "yes\n";
exit 0;
} else {
print "no geowebcache found\n";
exit 0;
}
}
if(exists $ARGV[0] and $ARGV[0] eq "config") {
print "graph_title GeoWebCache cache hit ratio\n";
print "graph_args --base 1000\n";
print "graph_vlabel %\n";
print "graph_category geowebcache\n";
print "ratio.label percent\n";
print "ratio.type GAUGE\n";
print "ratio.max 100\n";
print "ratio.min 0\n";
print "ratio.draw AREA\n";
print "ratio.colour FFCC00\n";
exit 0;
}
my $ua = LWP::UserAgent->new(timeout => $TIMEOUT);
my $response = $ua->request(HTTP::Request->new('GET',$url));
if ($response->content =~ '<tr><td colspan="5"> </td></tr><tr><td colspan="2">Cache hit ratio:</td><td colspan="3">(\d\d?\.?\d+)% of requests</td></tr>' ) {
print "ratio.value " . $1;
} else {
print "ratio.value U\n";
}
# vim:syntax=perl