source: trunk/web/addons/toga/toga-functions.php @ 109

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

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

// Set cluster context so that Ganglia will
// provide us with the correct metrics array
//
global $context;
$context = 'cluster';

include_once "$GANGLIA_PATH/get_ganglia.php";

// If php is compiled without globals
//
if ( !empty( $_GET ) ) {
        extract( $_GET );
}

// Ganglia's array of host metrics
//
global $metrics;

//print_r($metrics);

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, $httpvars;

        function DataGatherer() {

                $this->parser = xml_parser_create();
                $this->source = new DataSource();
                $this->httpvars = new HTTPVariables();
                $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 );
                }
        }

        function printInfo() {
                $handler = $this->xmlhandler;
                $handler->printInfo();
        }

        function getNodes() {
                $handler = $this->xmlhandler;
                return $handler->getNodes();
        }

        function getJobs() {
                $handler = $this->xmlhandler;
                return $handler->getJobs();
        }

}

class TorqueXMLHandler {

        var $clusters, $heartbeat, $nodes, $jobs;

        function TorqueXMLHandler() {
                $jobs = array();
                $clusters = array();
                $nodes = array();
                $heartbeat = array();
        }

        function gotNode( $hostname, $location = 'unspecified', $jobid = null ) {

                $nodes = &$this->nodes;

                if( !isset( $nodes[$hostname] ) ) {

                        $nodes[$hostname] = new Node( $hostname );
                }

                if( $location ) {

                        $nodes[$hostname]->setLocation( $location );
                }

                if( $jobid ) {
                        $nodes[$hostname]->addJob( $jobid );
                }
        }

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

                $jobs = &$this->jobs;

                if ( $attrs[TN] ) {

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

                $jobid = null;

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

                if( $name == 'CLUSTER' ) {

                        $clustername = $attrs[VAL];

                        if( !isset( $clusters[$clustername] ) )
                                $clusters[$clustername] = array();

                } else if( $name == 'HOST' ) {

                        $hostname = $attrs[NAME];
                        $location = $attrs[LOCATION];

                        $this->gotNode( $hostname, $location, null );

                } else if( $name == 'METRIC' and strstr( $attrs[NAME], 'TOGA' ) ) {

                        if( strstr( $attrs[NAME], 'TOGA-HEARTBEAT' ) ) {

                                $heartbeat['time'] = $attrs[VAL];
                                //printf( "heartbeat %s\n", $heartbeat['time'] );

                        } else if( strstr( $attrs[NAME], 'TOGA-JOB' ) ) {

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

                                //printf( "jobid %s\n", $jobid );

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

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

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

                                        $toganame = $togavalues[0];
                                        $togavalue = $togavalues[1];

                                        //printf( "\t%s\t= %s\n", $toganame, $togavalue );

                                        if( $toganame == 'nodes' ) {

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

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

                                                foreach( $nodes as $node ) {

                                                        $hostname = $node.'.'.$jobs[$jobid][domain];
                                                        $jobs[$jobid][$toganame][] = $hostname;
                                                        $this->gotNode( $hostname, null, $jobid );
                                                }

                                        } else {

                                                $jobs[$jobid][$toganame] = $togavalue;
                                        }
                                }
                        }
                }
        }

        function stopElement( $parser, $name ) {
        }

        function printInfo() {

                $jobs = &$this->jobs;

                printf( "---jobs---\n" );

                foreach( $jobs as $jobid => $job ) {

                        printf( "job %s\n", $jobid );

                        if( isset( $job[nodes] ) ) {

                                foreach( $job[nodes] as $node ) {

                                        $mynode = $this->nodes[$node];
                                        $hostname = $mynode->getHostname();
                                        $location = $mynode->getLocation();

                                        printf( "\t- node %s\tlocation %s\n", $hostname, $location );
                                        //$this->nodes[$hostname]->setLocation( "hier draait job ".$jobid );
                                }
                        }
                }

                printf( "---nodes---\n" );

                $nodes = &$this->nodes;

                foreach( $nodes as $node ) {

                        $hostname = $node->getHostname();
                        $location = $node->getLocation();
                        $jobs = implode( ' ', $node->getJobs() );
                        printf( "* node %s\tlocation %s\tjobs %s\n", $hostname, $location, $jobs );
                }
        }

        function getNodes() {
                return $this->nodes;
        }

        function getJobs() {
                return $this->jobs;
        }
}

class Node {

        var $img, $hostname, $location, $jobs;
        var $x, $y;

        function Node( $hostname ) {

                $this->hostname = $hostname;
                //$this->img = new NodeImg();
                $this->jobs = array();
        }

        function addJob( $jobid ) {
                $jobs = &$this->jobs;

                $jobs[] = $jobid;
        }

        function setLocation( $location ) {
                $this->location = $location;
        }

        function setHostname( $hostname ) {
                $this->hostname = $hostname;
        }

        function setCpus( $cpus ) {
                $this->cpus = $cpus;
        }

        function getHostname() {
                return $this->hostname;
        }

        function getLocation() {
                return $this->location;
        }

        function getCpus() {
                return $this->cpus;
        }

        function getJobs() {
                return $this->jobs;
        }

        function setCoords( $x, $y ) {
                $myimg = $this->img;
                $myimg->setCoords( $x, $y );
        }

        function setImage( $image ) {
                $myimg = $this->img;
                $myimg->setImage( &$image );
        }

        function draw() {
                global $metrics;
        
                $myimg = $this->img;

                $cpus = $metrics[$this->hostname]["cpu_num"][VAL];
                if (!$cpus) $cpus=1;
                $load_one = $metrics[$this->hostname]["load_one"][VAL];
                $load = ((float) $load_one)/$cpus;

                $myimg->setLoad( $load );
                $myimg->draw();
        }
}

class NodeImage {

        var $image, $x, $y, $hostname;

        function NodeImage( $image, $x, $y ) {

                $this->image = $image;
                $this->x = $x;
                $this->y = $y;
        }

        function setCoords( $x, $y ) {

                $this->x = $x;
                $this->y = $y;
        }

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

                return $my_color;
        }

        function setImage( $image ) {
                $this->image = $image;
        }

        function setLoad( $load ) {
                $this->load = $load;
        }

        function setHostname( $hostname ) {
                $this->hostname = $hostname;
        }

        function drawNode( $load ) {

                if( !isset( $this->x ) or !isset( $this->y ) or !isset( $load ) ) {
                        printf( "aborting\n" );
                        printf( "x %d y %d load %f\n", $this->x, $this->y, $load );
                        return;
                }

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

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

                imageFilledRectangle( $this->image, $this->x, $this->y, $this->x+11, $this->y+11, $queuecolor );
                imageFilledRectangle( $this->image, $this->x+1, $this->y+1, $this->x+10, $this->y+10, $my_loadcolor );

                // Een job markering?
                //imageFilledEllipse( $this->image, ($this->x+9)/2, ($this->y+9)/2, 6, 6, $jobcolor );
        }

        function draw() {

                global $metrics;

                $cpus = $metrics[$this->hostname][cpu_num][VAL];
                if (!$cpus) $cpus=1;
                $load_one = $metrics[$this->hostname][load_one][VAL];
                $load = ((float) $load_one)/$cpus;
                //printf( "hostname %s cpus %s load_one %s load %f\n", $this->hostname, $cpus, $load_one, $load );

                $this->drawNode( $load );
        }
}

class ClusterImage {

        var $dataget, $image;

        function ClusterImage() {
                $this->dataget = new DataGatherer();
        }

        function draw() {
                $mydatag = $this->dataget;
                $mydatag->parseXML();

                $max_width = 250;
                $node_width = 11;

                $nodes = $mydatag->getNodes();

                $nodes_nr = count( $nodes );
                $node_keys = array_keys( $nodes );

                $nodes_size = $nodes_nr*$node_width;
                $node_rows = 0;

                if( $nodes_size > $max_width ) {
                        $nodes_per_row = ( (int) ($max_width/$node_width) );
                } else {
                        $nodes_per_row = $nodes_size;
                        $node_rows = 1;
                }

                if( $nodes_per_row < $nodes_nr ) {
                        $node_rows = ( (int) ($nodes_nr/$nodes_per_row) );
                        $node_rest = fmod( $nodes_nr, $nodes_per_row );
                        //printf( "nodesnr %d noderest %f\n", $nodes_nr, $node_rest );
                        if( $node_rest > 0 ) {
                                $node_rows++;
                                //printf( "noderows %d\n", $node_rows );
                        }
                }

                //printf( "imagecreate: %dx%d", ($nodes_per_row*$node_width), ($node_rows*$node_width) );
                $image = imageCreateTrueColor( ($nodes_per_row*$node_width)+1, ($node_rows*$node_width)+1 );
                $colorwhite = imageColorAllocate( $image, 255, 255, 255 );
                imageFill( $image, 0, 0, $colorwhite );

                for( $n = 0; $n < $node_rows; $n++ ) {
                        
                        for( $m = 0; $m < $nodes_per_row; $m++ ) {
                        
                                $x = ($m * $node_width);
                                $y = ($n * $node_width);

                                $cur_node = ($n * $nodes_per_row) + ($m);
                                $host = $node_keys[$cur_node];

                                //printf( "host %s curnode %s ", $host, $cur_node );

                                if( isset( $nodes[$host] ) and ($cur_node < $nodes_nr) ) {
                                        //printf( "image %s\n", $host );
                                        $node = new NodeImage( $image, $x, $y );
                                        $node->setHostname( $host );
                                        $node->draw();
                                        //$nodes[$host]->setCoords( $x, $y );
                                        //$nodes[$host]->setImage( &$image );
                                        //$nodes[$host]->draw();
                                        //$cur_node++;
                                }
                        }
                }
                
                header( 'Content-type: image/png' );
                imagePNG( $image );
                imageDestroy( $image );
        }
}

//$my_data = new DataGatherer();
//$my_data->parseXML();
//$my_data->printInfo();

$ic = new ClusterImage();
$ic->draw();
?>