#!/usr/bin/php
<?php
/**
 * @author: Konstantin Kuklin <konstantin.kuklin@gmail.com>
 * Date: 24.05.12
 */
$host = getenv('host');
$port = getenv('port');

if (!$host)
  $host = '127.0.0.1';

if (!$port)
  $port = 9306;

$sCommandSystem = "echo 'show status;' | mysql -h{$host} -P{$port} | grep connections | awk '{ print $2}';";
$sTmpFilePath = "/tmp/sphinx_connections";

if (isset($argc) && $argc > 1) {
    if ($argv[1] == 'autoconf') {
        echo "yes\n";
    }
    if ($argv[1] == 'config') {
        echo "graph_title Sphinx Connections in last 5 minutes\n" .
            "graph_info This graph shows the number of connections for last 5 minutes\n" .
            "graph_category search\n" .
            "graph_args --base 1000 --lower-limit 0\n" .
            "graph_vlabel Connections\n" .
            "graph_info The number of current connections with respect to the max_connections setting.graph_category search\n" .
            "graph_order current\n" .
            "graph_total Total\n" .
            "current.label In Use\n" .
            "current.draw AREA\n" .
            "current.info The number of connections in last 5 minutes\n" .
            "current.warning 2500\n" .
            "current.critical 4000\n";
    }
    exit(0);
}
$iCurrent = @exec($sCommandSystem);

if (!file_exists($sTmpFilePath)) {
    $fp = fopen($sTmpFilePath, "w");
    fputs($fp, $iCurrent);
    fclose($fp);

    $toShow = 0;
} else {

    $iOldCount = file_get_contents($sTmpFilePath, true);

    $fp = fopen($sTmpFilePath, "w");
    fputs($fp, $iCurrent);
    fclose($fp);

    $toShow = (int) ($iCurrent - (int) $iOldCount);
    if ($toShow < 0) {
      $toShow = 0;
    }
}

echo "current.value $toShow\n";