Munin contributed plugins

#!/usr/bin/php

<?php

# plugin made by Dju

# v1.1

# allows to monitor the mirrors number and bandwidth from Launchpad for a specific country

# saves the results in cache and connects to launchpad website every 3 hours

# the country constant it=s the name of he country, as it appears on the launchpad page (bold, on a gray background)

define( 'URL', 'https://launchpad.net/ubuntu/+cdmirrors' );

define( 'CACHE_FILE', 'ubuntu_mirrors.txt' );

define( 'CACHE_UPTIME', 3 );

define( 'COUNTRY',  'France' );

function find_and_short( $str, &$html, $with_str=true )

{

    $pos = strpos( $html, $str );

    if( $pos === false ) {

        throw new Exception( "error finding '$str'", 2 );

    } else {

        $removed = ( $with_str == true ) ? substr( $html, 0, $pos+strlen($str) ) : substr( $html, 0, $pos );

        $html = substr( $html, $pos + strlen($str) );

        return $removed;

    }

}

function get_cache()

{

    if( !file_exists(CACHE_FILE) ) {

        return false;

    } else {

        $cache_time = @filemtime( CACHE_FILE );

        $cache_age = ( time() - $cache_time ) / 3600;

        if( $cache_age <= CACHE_UPTIME ) {

            $content = @file_get_contents( CACHE_FILE );

            if( !$content ) throw new Exception( 'Erreur lecture cache '.CACHE_FILE, 3 );

            return array(

                'datas' => explode( '|', $content ),

                'date' => $cache_time

            );

        } else {

            @unlink( CACHE_FILE );

            return false;

        }

    }

}

function set_cache( $MIRRORS, $BW_RATE, $BW_UNIT )

{

    $content = $MIRRORS . '|' . $BW_RATE . '|' . $BW_UNIT;

    $write = @file_put_contents( CACHE_FILE, $content );

    if( !$write ) throw new Exception( 'erreur ecriture cache '.CACHE_FILE, 4 );

}

function get_from_launchpad()

{

    $html = @file_get_contents( URL );

    if( !$html ) throw new Exception( 'Error connecting to launchpad', 1 );

    $str1 = COUNTRY.'</th>';

    $str2 = '<th style="text-align: left">';

    $str3 = '</th>';

    $str4 = '<span>mirrors</span>';

    find_and_short( $str1, $html );

    find_and_short( $str2, $html );

    $BW = find_and_short( $str3, $html, false );

    list( $BW_RATE, $BW_UNIT ) = explode( ' ', $BW );

    $rest = find_and_short( $str4, $html, false );

    $rest = str_replace( "\n", '', $rest );

    find_and_short( '<th style="text-align: left">', $rest );

    $MIRRORS = trim( $rest );

    return array( $MIRRORS, $BW_RATE, $BW_UNIT  );

}

try

{

    $CACHE = get_cache();

    if( $CACHE != false ) {

        list( $MIRRORS, $BW_RATE, $BW_UNIT ) = $CACHE['datas'];

        $CACHE_DATE = date('d/m/y H:i', $CACHE['date'] );

    }

    if( isset($_SERVER['argv'][1]) && $_SERVER['argv'][1] != '' ) {

        switch( $_SERVER['argv'][1] ) {

			case 'autoconf':

				echo "yes\n";

				exit( 0 );

				break;

			case 'config':

				echo "graph_title Ubuntu Mirrors in ".COUNTRY."\n";

				echo "graph_category other\n";

				echo "graph_args --base 1000 -l 0\n";

				echo "graph_scale no\n";

				echo "graph_vlabel Bandwidth / Mirrors\n";

				$graph_info = 'This graph shows the available bandwidth and mirrors for ubuntu';

				if( $CACHE != false ) $graph_info .= ' (cache: '.CACHE_UPTIME.'h - last: '.$CACHE_DATE.')';

				echo "graph_info ".$graph_info.")\n";

				echo "nbm.label Mirrors number\n";

				$bwUnit = ( $CACHE == false ) ? '' : ' in '.$BW_UNIT;

				echo "bw.label Bandwidth".$bwUnit."\n";

				exit( 0 );

				break;

			default:

				echo "Unknown arg: ".$arg."\n";

				exit( 2 );

        }

    }

    if( $CACHE == false ) {

        list( $MIRRORS, $BW_RATE, $BW_UNIT ) = get_from_launchpad();

        set_cache( $MIRRORS, $BW_RATE, $BW_UNIT );

    }

    echo "nbm.value ".$MIRRORS."\n";

    echo "bw.value ".$BW_RATE."\n";

    exit( 0 );

}

catch( Exception $ex )

{

    echo 'Exception '.$ex->getCode() . ' ('.$ex->getMessage() . ")\n";

    exit( $ex->getCode() );

}

?>