source: trunk/web/addons/toga/toga-functions.php @ 103

<?php
$GANGLIA_PATH = "/var/www/ganglia";

include_once "$GANGLIA_PATH/conf.php";
include_once "$GANGLIA_PATH/functions.php";

if ( !empty( $_GET ) ) {
        extract( $_GET );
}

class HTTPVariables {

        var $clustername, $metricname;

        function HTTPVariables() {

                global $HTTP_GET_VARS;

                $this->clustername = $HTTP_GET_VARS["c"] ? $HTTP_GET_VARS["c"] : null;
                $this->metricname = $HTTP_GET_VARS["m"] ? $HTTP_GET_VARS["m"] : null;
        }

        function getClusterName() {
                return $this->clustername;
        }

        function getMetricName() {
                return $this->metricname;
        }
}

class DataSource {

        var $data, $ip, $port;

        function DataSource( $ip = '127.0.0.1', $port = 8649 ) {
                $this->ip = $ip;
                $this->port = $port;
        }

        function getData() {

                $errstr;
                $errno = 0;
                $timeout = 3;

                $fp = fsockopen( $this->ip, $this->port, &$errno, &$errstr, $timeout );

                if( ! $fp ) {
                        echo 'Unable to connect to '.$this->ip.':'.$this->port; // printf( 'Unable to connect to [%s:%.0f]', $this->ip, $this->port );
                        return;
                }

                while ( !feof( $fp ) ) {
                        
                        $data .= fread( $fp, 16384 );
                }

                fclose( $fp );

                return $data;
        }
}

class DataGatherer {

        var $xmlhandler, $data;

        function DataGatherer() {

                $this->parser = xml_parser_create();
                $this->source = new DataSource();
                $this->xmlhandler = new TorqueXMLHandler();
                xml_set_element_handler( $this->parser, array( &$this->xmlhandler, 'startElement' ), array( &$this->xmlhandler, 'stopElement' ) );
        }

        function parseXML() {

                $src = &$this->source;
                $this->data = $src->getData();

                if ( !xml_parse( &$this->parser, $this->data ) ) {
                        $error = sprintf( 'XML error: %s at %d', xml_error_string( xml_get_error_code( &$this->parser ) ), xml_get_current_line_number( &$this->parser ) );
                        // die( $error );
                }
        }

}

class TorqueXMLHandler {

        function TorqueXMLHandler() {
        }

        function startElement( $parser, $name, $attrs ) {

                if ( $attrs[TN] ) {

                        // Ignore dead metrics. Detect and mask failures.
                        if ( $attrs[TN] > $attrs[TMAX] * 4 )
                                return;
                }

                $jobs = array();
                $jobid = null;

                printf( '%s=%s', $attrs[NAME], $attrs[VAL] );

                sscanf( $attrs[NAME], 'TOGA-JOB-%d', $jobid );

                if( $jobid ) {

                        if( !isset( $jobs[$jobid] ) )
                                $jobs[$jobid] = array();

                        $fields = explode( ' ', $attrs[VAL] );

                        foreach( $fields as $f ) {
                                $togavalues = explode( '=', $f );

                                foreach( $togavalues as $toganame => $togavalue ) {

                                        if( $toganame == 'nodes' ) {

                                                $nodes = explode( ';', $togavalue );

                                                foreach( $nodes as $node ) {

                                                        // Doe iets koels met $node
                                                }

                                        }

                                        $jobs[$toganame] = $togavalue;

                                }
                        }

                }
        }

        function stopElement( $parser, $name ) {
        }
}

class Node {

        var $img;

        function Node() {

                $this->img = new NodeImg();
        }
}

class NodeImg {

        var $image;

        function NodeImg( $image = null ) {

                $imageWidth = 100;
                $imageHeight = 100;

                if( !$image ) {
                        $this->image = imageCreate( $imageWidth, $imageHeight );
                                // or die( 'Cannot initialize new image stream: is GD installed?' );
                } else {
                        $this->image = $image;
                }

                $background_color = imageColorAllocate( $this->image, 255, 255, 255 );
                $black_color = imageColorAllocate( $this->image, 0, 0, 0 );
                imageRectangle( $this->image, 0, 0, $imageWidth-1, $imageHeight-1, $black_color );
        }

        function colorHex( $color ) {
        
                $my_color = imageColorAllocate( $this->image, hexdec( substr( $color, 0, 2 )), hexdec( substr( $color, 2, 4 )), hexdec( substr( $color, 4, 6 )) );

                return $my_color;
        }

        function drawNode( $x, $y, &$queuecolor, $load, &$jobcolor ) {

                // Convert Ganglias Hexadecimal load color to a Decimal one
                $my_loadcolor = $this->colorHex( load_color($load) );

                imageFilledRectangle( $this->image, $x, $y, $x+12, $y+12, $queuecolor );
                imageFilledRectangle( $this->image, $x+2, $y+2, $x+10, $y+10, $my_loadcolor );
                //imageFilledEllipse( $this->image, ($x+9)/2, ($y+9)/2, 6, 6, $jobcolor );
        }

        function drawImage() {

                $queue_color = imageColorAllocate( $this->image, 0, 102, 304 );
                $job_color = imageColorAllocate( $this->image, 204, 204, 0 );

                $this->drawNode( 1, 1, $queue_color, 0.1, $job_color );
                header( 'Content-type: image/png' );
                imagePNG( $this->image );
                imageDestroy( $this->image );
        }
}

//$my_node = new NodeImg();
//$my_node->drawImage();

$my_data = new DataGatherer();
$my_data->parseXML();
?>