Munin contributed plugins

#!/usr/bin/php

<?php

/**

 * SolR Plugin

 * author : nicolas.moussikian@shopbot-inc.com

 *

 * This plugin allows to graph any data present in the stats report on a multi core SolR instance

 * AKA : http://127.0.0.1:8080/solr/[name of the core]/admin/stats.jsp

 * Verify the server where the munin-node instance is can access that URL

 *

 * You need to have a PHP 5.2.6+ CLI installed too

 *

 * Once the plugin is available you can simlink it with the following naming convention :

 * solr-[name of the core]-[name of the stats section - ex.: CORE]-[name of the entry in the xml - ex.: searcher]-[name of the stat to graph - ex.: numDocs]

 */

$action = empty($argv[1]) ? '' : $argv[1];

$tabParams = explode('-', $argv[0]);

$core = $tabParams[1];

$category = $tabParams[2];

$item = $tabParams[3];

$property = $tabParams[4];

if('config' === $action)

{

    echo 'graph_category search ' . $core . "\n";

    echo 'graph_title ' . $item . ' ' . $property . "\n";

    echo 'graph_vlabel ' . $property . "\n";

    echo $core . $item . $property . 'solr.label ' . $property . "\n";

}

else

{

    $file = 'http://127.0.0.1:8080/solr/' . $core . '/admin/stats.jsp';

    $doc = new DOMDocument('1.0', 'utf-8');

    $doc->load($file);

    $xpath = new DOMXpath($doc);

    $elements = $xpath->query('/solr/solr-info/' . $category . '/entry');

    foreach($elements as $element)

    {

        if($item == trim($element->getElementsByTagName('name')->item(0)->textContent))

        {

            $stats = $element->getElementsByTagName('stat');

            foreach($stats as $stat)

            {

                if($property == trim($stat->getAttribute('name')))

                {

                    echo $core . $item . $property . 'solr.value ' . floatval(trim($stat->textContent)) . "\n";

                }

            }

        }

    }

}