source: trunk/web/addons/job_monarch/libtoga.php @ 332

<?php
/*
 *
 * This file is part of Jobmonarch
 *
 * Copyright (C) 2006  Ramon Bastiaans
 *
 * Jobmonarch is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Jobmonarch is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * SVN $Id: libtoga.php 332 2007-04-22 20:32:52Z bastiaans $
 *
 */


class HTTPVariables {

        var $clustername, $metricname;
        var $restvars, $httpvars;

        function HTTPVariables( $httpvars, $getvars ) {

                $this->restvars = array();

                $this->clustername = $httpvars["c"] ? $httpvars["c"] : $getvars["c"];
                $this->metricname = $httpvars["m"] ? $httpvars["m"] : $getvars["m"];

                foreach( $httpvars as $httpvar => $httpval ) {
                        
                        if( $httpval ) {
                                $this->restvars[$httpvar] = $httpval;
                        }
                }

                foreach( $getvars as $getvar => $getval ) {

                        if( $getval ) {
                                $this->restvars[$getvar] = $getval;
                        }
                }
        }

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

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

        function getHttpVar( $var ) {
                if( isset( $this->restvars[$var] ) )
                        return $this->restvars[$var];
                else
                        return null;
        }
}

// Toga's conf
//
include_once "./conf.php";
include_once "./version.php";

global $GANGLIA_PATH;
global $RRDTOOL;
global $JOB_ARCHIVE_DIR;
global $JOB_ARCHIVE_DBASE;
global $SORTBY_HOSTNAME;
global $SORT_ORDER;
global $skan_str;
global $x_first, $y_first;
global $SORT_XLABEL, $SORT_YLABEL;

$my_dir = getcwd();

// Load Ganglia's PHP
chdir( $GANGLIA_PATH );

include_once "./conf.php";
include_once "./functions.php";
include_once "./ganglia.php";
include_once "./get_context.php";
unset( $start );
$context = 'cluster';
include_once "./get_ganglia.php";

// Back to our PHP
chdir( $my_dir );

global $SMALL_CLUSTERIMAGE_MAXWIDTH, $SMALL_CLUSTERIMAGE_NODEWIDTH, $DATA_SOURCE, $HTTP_GET_VARS, $_GET;
$httpvars = new HTTPVariables( $HTTP_GET_VARS, $_GET );

// Set cluster context so that Ganglia will
// provide us with the correct metrics array
//
global $context, $clustername, $reports;

//$clustername = $httpvars->getClusterName();

global $default_metric;

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

global $DATETIME_FORMAT;

function makeDate( $time ) {
        global $DATETIME_FORMAT;
        return strftime( $DATETIME_FORMAT, $time );
}

class TarchDbase {

        var $ip, $dbase, $conn;

        function TarchDbase( $ip = null, $dbase = null ) {

                global $JOB_ARCHIVE_DBASE;

                $db_fields = explode( '/', $JOB_ARCHIVE_DBASE );

                $this->ip = $db_fields[0];
                $this->dbase = $db_fields[1];
                $this->conn = null;
        }

        function connect() {

                if( $this->ip == null )
                        $this->conn = pg_connect( "dbname=".$this->dbase );
                else
                        $this->conn = pg_connect( "host=".$this->ip." dbname=".$this->dbase );
        }

        function searchDbase( $id = null, $queue = null, $user = null, $name = null, $start_from_time = null, $start_to_time = null, $end_from_time = null, $end_to_time = null ) {

                global $SEARCH_RESULT_LIMIT;

                if( $id ) {
                        $select_query = "SELECT job_id FROM jobs WHERE job_id = '$id' AND job_status = 'F'";
                        $this->resultcount = 1;
                } else {
                        $query_args = array();
                        
                        if( $queue )
                                $query_args[] = "job_queue ='$queue'";
                        if( $user )
                                $query_args[] = "job_owner ='$user'";
                        if( $name )
                                $query_args[] = "job_name = '$name'";
                        if( $start_from_time )
                                $query_args[] = "job_start_timestamp >= $start_from_time";
                        if( $start_to_time )
                                $query_args[] = "job_start_timestamp <= $start_to_time";
                        if( $end_from_time )
                                $query_args[] = "job_stop_timestamp >= $end_from_time";
                        if( $end_to_time )
                                $query_args[] = "job_stop_timestamp <= $end_to_time";

                        $query = "FROM jobs WHERE job_status = 'F' AND ";
                        $extra_query_args = '';

                        foreach( $query_args as $myquery ) {

                                if( $extra_query_args == '' )
                                        $extra_query_args = $myquery;
                                else
                                        $extra_query_args .= " AND ".$myquery;
                        }
                        $query .= $extra_query_args;

                        $count_result_idname = "COUNT(job_id)";
                        $select_result_idname = "job_id";

                        $count_query = "SELECT " . $count_result_idname . " " . $query;

                        $count_result = $this->queryDbase( $count_query );
                        $this->resultcount = (int) $count_result[0][count];

                        $select_query = "SELECT " . $select_result_idname . " " . $query . " ORDER BY job_id LIMIT " . $SEARCH_RESULT_LIMIT;
                }

                $ids = $this->queryDbase( $select_query );

                $ret = array();

                foreach( $ids as $crow)
                        $ret[] = $crow[job_id];

                return $ret;
        }

        function getNodesForJob( $jobid ) {

                $result = $this->queryDbase( "SELECT node_id FROM job_nodes WHERE job_id = '$jobid'" );

                $nodes = array();

                foreach( $result as $result_row ) 

                        $nodes[] = $this->getNodeArray( $result_row[node_id] );

                return $nodes;
        }

        function getJobsForNode( $nodeid ) {

                $result = $this->queryDbase( "SELECT job_id FROM job_nodes WHERE node_id = '$nodeid'" );

                $jobs = array();

                foreach( $result as $result_row )

                        $jobs[] = $this->getJobArray( $result_row[job_id] );

                return $jobs;
        }

        function getJobArray( $id ) {
                $result = $this->queryDbase( "SELECT * FROM jobs WHERE job_id = '$id'" );

                return ( $this->makeArray( $result[0] ) );
        }

        function getNodeArray( $id ) {

                $result = $this->queryDbase( "SELECT * FROM nodes WHERE node_id = '$id'" );

                return ( $this->makeArray( $result[0] ) );
        }

        function makeArray( $result_row ) {

                $myar = array();

                foreach( $result_row as $mykey => $myval ) {

                        $map_key = explode( '_', $mykey );

                        $rmap_key = array_reverse( $map_key );
                        array_pop( $rmap_key );
                        $map_key = array_reverse( $rmap_key );
                        
                        $newkey = implode( '_', $map_key );
                        
                        $myar[$newkey] = $result_row[$mykey];
                }

                return $myar;
        }

        function queryDbase( $query ) {

                $result_rows = array();
        
                if( !$this->conn )
                        $this->connect();

                //printf( "query = [%s]\n", $query );
                $result = pg_query( $this->conn, $query );

                while ($row = pg_fetch_assoc($result))
                        $result_rows[] = $row;

                return $result_rows;
        }
}

class TarchRrdGraph {
        var $rrdbin, $rrdvalues, $clustername, $hostname, $tempdir, $tarchdir, $metrics;

        function TarchRrdGraph( $clustername, $hostname ) {

                global $RRDTOOL;
                global $JOB_ARCHIVE_DIR;

                $this->rrdbin = $RRDTOOL;
                $this->rrdvalues = array();
                $this->tarchdir = $JOB_ARCHIVE_DIR;
                $this->clustername = $clustername;
                $this->hostname = $hostname;
        }

        function doCmd( $command ) {

                printf( "command = %s\n", $command );
                $pipe = popen( $command . ' 2>&1', 'r' );

                if (!$pipe) {
                        print "pipe failed.";
                        return "";
                }

                $output = '';
                while(!feof($pipe))
                        $output .= fread($pipe, 1024);

                pclose($pipe);

                $output = explode( "\n", $output );
                //print_r( $output );
                return $output;
        }

        function dirList( $dir ) {

                $dirlist = array();

                if ($handle = opendir( $dir )) {
                        while (false !== ($file = readdir($handle))) {
                                if ($file != "." && $file != "..") {
                                        $dirlist[] = $file;
                                }
                        }
                        closedir($handle);
                }

                return $dirlist;
        }

        function getTimePeriods( $start, $end ) {

                //printf("start = %s end = %s\n", $start, $end );
                $times = array();
                $dirlist = $this->dirList( $this->tarchdir . '/' . $this->clustername . '/' . $this->hostname );

                //print_r( $dirlist );

                $first = 0;
                $last = 9999999999999;

                foreach( $dirlist as $dir ) {

                        if( $dir > $first and $dir <= $start )
                                $first = $dir;
                        if( $dir < $last and $dir >= $end )
                                $last = $dir;
                }

                //printf( "first = %s last = %s\n", $first, $last );

                foreach( $dirlist as $dir ) {

                        //printf( "dir %s ", $dir );

                        if( $dir >= $first and $dir <= $last and !array_key_exists( $dir, $times ) ) {
                        
                                $times[] = $dir;
                                //printf("newtime %s ", $dir );

                        }
                }

                //print_r( $times );

                sort( $times );

                //print_r( $times );

                return $times;
        }

        function getRrdDirs( $start, $stop ) {

                //printf( "tarchdir = %s\n", $this->tarchdir );
                $timess = $this->getTimePeriods( $start, $stop );
                //print_r( $timess );

                $rrd_files = array();

                foreach( $timess as $time ) {

                        $rrd_files[] = $this->tarchdir . '/' . $this->clustername . '/' . $this->hostname. '/'.$time;
                }

                return $rrd_files;
        }

        function getRrdFiles( $metric, $start, $stop ) {

                $times = $this->getTimePeriods( $start, $stop );

                $rrd_files = array();

                foreach( $times as $time ) {

                        $rrd_files[] = $this->tarchdir . '/' . $this->clustername . '/' . $this->hostname . '/' .$time. '/' . $metric. '.rrd';
                }

                return $rrd_files;
        }

        function graph( $descr ) {
//      monitor2:/data/toga/rrds/LISA Cluster/gb-r15n11.irc.sara.nl# rrdtool graph /var/www/ganglia/test1.png --start 1118683231 --end 1118750431 --width 300 --height 400 DEF:'1'='./1118647515/load_one.rrd':'sum':AVERAGE DEF:'2'='./1118690723/load_one.rrd':'sum':AVERAGE DEF:'3'='./1118733925/load_one.rrd':'sum':AVERAGE AREA:1#555555:"load_one" AREA:2#555555 AREA:3#555555
//      380x461
//      monitor2:/data/toga/rrds/LISA Cluster/gb-r15n11.irc.sara.nl#
                //$command = $this->rrdbin . " graph - --start $start --end $end ".
                        "--width $width --height $height $upper_limit $lower_limit ".
                        "--title '$title' $vertical_label $extras $background ". $series;

                //$graph = $this->doCmd( $command );

                //return $graph;
                return 0;
        }
}

class DataSource {

        var $data, $ip, $port;

        //function DataSource( $ip = '127.0.0.1', $port = 8649 ) {
        function DataSource() {

                global $DATA_SOURCE;

                $ds_fields      = explode( ':', $DATA_SOURCE );

                $ds_ip          = $ds_fields[0];
                $ds_port        = $ds_fields[1];

                $this->ip       = $ds_ip;
                $this->port     = $ds_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;
                }

                stream_set_timeout( $fp, 30 );

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

                fclose( $fp );

                return $data;
        }
}

class DataGatherer {

        var $xmlhandler, $data, $httpvars;

        function DataGatherer( $cluster ) {

                //global $DATA_SOURCE;
        
                //printf("dg cluster = %s\n", $cluster );
                //$ds_fields = explode( ':', $DATA_SOURCE );
                //$ds_ip = $ds_fields[0];
                //$ds_port = $ds_fields[1];

                //$this->source = new DataSource( $ds_ip, $ds_port );

                $this->cluster  = $cluster;
                $this->httpvars = $httpvars;
        }

        function parseXML( $data ) {

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

                $this->parser           = xml_parser_create();
                $this->xmlhandler       = new TorqueXMLHandler( $this->cluster );

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

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

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

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

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

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

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

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

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

class TorqueXMLHandler {

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

        function TorqueXMLHandler( $clustername ) {
                $jobs = array();
                $clusters = array();
                $this->nodes = array();
                $heartbeat = array();
                $this->clustername = $clustername;
                //printf(" cluster set to %s \n", $this->clustername );
        }

        function getCpus() {

                $cpus = 0;

                if( isset( $this->jobs ) && count( $this->jobs ) > 0 ) {

                        foreach( $this->jobs as $jobid=>$jobattrs ) {

                                $nodes = count( $jobattrs[nodes] );
                                $ppn = (int) $jobattrs[ppn] ? $jobattrs[ppn] : 1;
                                $mycpus = $nodes * $ppn;

                                $cpus = $cpus + $mycpus;
                        }
                }
        }

        function isJobmonRunning() {

                if (isset( $this->heartbeat['time'] ))
                        return 1;
                else
                        return 0;
        }

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

                $jobs = $this->jobs;
                $nodes = $this->nodes;

                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] );

                //printf( "clustername = %s proc_cluster = %s\n", $this->clustername, $this->proc_cluster );

                if( $name == 'CLUSTER' ) {

                        $this->proc_cluster = $attrs[NAME];
                        //printf( "Found cluster %s\n", $attrs[NAME] );
                        //print_r( $attrs );

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

                } else if( $name == 'HOST' and $this->proc_cluster == $this->clustername) {

                        $hostname = $attrs[NAME];
                        $location = $attrs[LOCATION];
                        //printf( "Found node %s\n", $hostname );

                        if( !isset( $nodes[$hostname] ) )
                                $nodes[$hostname] = new NodeImage( $this->proc_cluster, $hostname );

                } else if( $name == 'METRIC' and strstr( $attrs[NAME], 'MONARCH' ) and $this->proc_cluster == $this->clustername ) {

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

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

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

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

                                //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( $jobs[$jobid][status] == 'R' ) {
                                                
                                                        if( !isset( $jobs[$jobid][$toganame] ) )
                                                                $jobs[$jobid][$toganame] = array();

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

                                                        //print_r($mynodes);

                                                        foreach( $mynodes as $node ) {

                                                                if( !in_array( $node, $jobs[$jobid][$toganame] ) ) {
                                                                        $jobs[$jobid][$toganame][] = $node;
                                                                }
                                                        }

                                                } else if( $jobs[$jobid][status] == 'Q' ) {

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

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

                                if( isset( $jobs[$jobid][domain] ) and isset( $jobs[$jobid][nodes] ) ) {
                        
                                        $nr_nodes = count( $jobs[$jobid][nodes] );
                
                                        if( $jobs[$jobid][status] == 'R' ) {

                                                foreach( $jobs[$jobid][nodes] as $node ) {

                                                        $domain = $jobs[$jobid][domain];
                                                        $domain_len = 0 - strlen( $domain );

                                                        if( substr( $node, $domain_len ) != $domain ) {
                                                                $host = $node. '.'.$domain;
                                                        } else {
                                                                $host = $node;
                                                        }

                                                        //$host = $node.'.'.$jobs[$jobid][domain];
                                
                                                        if( !isset( $nodes[$host] ) )
                                                                $my_node = new NodeImage( $this->proc_cluster, $host );
                                                        else
                                                                $my_node = $nodes[$host];

                                                        if( !$my_node->hasJob( $jobid ) )

                                                                if( isset( $jobs[$jobid][ppn] ) )
                                                                        $my_node->addJob( $jobid, ((int) $jobs[$jobid][ppn]) );
                                                                else
                                                                        $my_node->addJob( $jobid, 1 );

                                                        $nodes[$host] = $my_node;
                                                }
                                        }
                                }
                        }
                }
                $this->jobs = $jobs;
                //print_r( $nodes );
                $this->nodes = $nodes;
                //print_r( $this->nodes );
        }

        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() {
                //print_r( $this->nodes );
                return $this->nodes;
        }

        function getNode( $node ) {

                $nodes = &$this->nodes;
                if( isset( $nodes[$node] ) )
                        return $nodes[$node];
                else
                        return NULL;
        }

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

        function getJob( $job ) {

                $jobs = &$this->jobs;
                if( isset( $jobs[$job] ) )
                        return $jobs[$job];
                else
                        return NULL;
        }

        function getHeartbeat() {
                return $this->heartbeat['time'];
        }
}

class NodeImage {

        var $image, $x, $y, $hostname, $jobs, $tasks, $showinfo;

        function NodeImage( $cluster, $hostname ) {

                global $SMALL_CLUSTERIMAGE_NODEWIDTH;

                $this->jobs = array();
                //$this->image = $image;
                //$this->x = $x;
                //$this->y = $y;
                $this->tasks = 0;
                $this->hostname = $hostname;
                $this->cpus = $this->determineCpus();
                $this->clustername = $cluster;
                $this->showinfo = 1;
                $this->size = $SMALL_CLUSTERIMAGE_NODEWIDTH;
        }

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

                $jobs[] = $jobid;
                $this->jobs = $jobs;

                $this->addTask( $cpus );
        }

        function hasJob( $jobid ) {

                $jobfound = 0;

                if( count( $this->jobs ) > 0 )
                        foreach( $this->jobs as $job )

                                if( $job == $jobid )
                                        $jobfound = 1;

                return $jobfound;
        }

        function addTask( $cpus ) {

                $this->tasks = $this->tasks + $cpus;
        }

        function setImage( $image ) {

                $this->image = $image;
        }

        function setCoords( $x, $y ) {

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

        function getImagemapArea() {

                $area_topleft           = $this->x . "," . $this->y;
                $area_bottomright       = ($this->x + $this->size) . "," . ($this->y + $this->size);
                $area_coords            = $area_topleft . "," . $area_bottomright;

                $area_href              = "./?c=" . $this->clustername . "&h=" . $this->hostname;
                $area_tooltip           = $this->hostname . ": " . implode( " ", $this->jobs );

                $tag_href               = "HREF=\"" . $area_href . "\"";
                $tag_coords             = "COORDS=\"" . $area_coords . "\"";
                $tag_tooltip1           = "ALT=\"" . $area_tooltip . "\"";
                $tag_tooltip2           = "TITLE=\"" . $area_tooltip . "\"";

                return ("<AREA SHAPE=\"RECT\" " . $tag_coords . " " . $tag_href . " " . $tag_tooltip1 . " " . $tag_tooltip2 . ">");
        }

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

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

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

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

        function setShowinfo( $showinfo ) {
                $this->showinfo = $showinfo;
        }

        function drawSmall() {

                global $SMALL_CLUSTERIMAGE_NODEWIDTH;

                $this->size     = $SMALL_CLUSTERIMAGE_NODEWIDTH;

                $this->draw();
        }

        function drawBig() {

                global $BIG_CLUSTERIMAGE_NODEWIDTH;

                $this->size     = $BIG_CLUSTERIMAGE_NODEWIDTH;

                $this->draw();
        }

        function draw() {

                global $JOB_NODE_MARKING;

                $black_color = imageColorAllocate( $this->image, 0, 0, 0 );
                $size = $this->size;

                imageFilledRectangle( $this->image, $this->x, $this->y, $this->x+($size), $this->y+($size), $black_color );

                if( $this->showinfo) {
                
                        $this->load = $this->determineLoad();

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


                        // Convert Ganglias Hexadecimal load color to a Decimal one
                        //
                        $load = $this->determineLoad(); 
                        $usecolor = $this->colorHex( load_color($load) );
                        imageFilledRectangle( $this->image, $this->x+1, $this->y+1, $this->x+($size-1), $this->y+($size-1), $usecolor );
                        if( count( $this->jobs ) > 0 )
                                imageString( $this->image, 1, $this->x+(($size/2)-1), $this->y+(($size/2)-4), $JOB_NODE_MARKING, $black_color );

                } else {

                        // White
                        $usecolor = imageColorAllocate( $this->image, 255, 255, 255 );
                        imageFilledRectangle( $this->image, $this->x+1, $this->y+1, $this->x+($size-1), $this->y+($size-1), $usecolor );
                }


        }

        function determineCpus() {

                global $metrics;

                $cpus = $metrics[$this->hostname][cpu_num][VAL];
                if (!$cpus) $cpus=1;

                return $cpus;
        }

        function determineLoad() {

                global $metrics;

                $load_one = $metrics[$this->hostname][load_one][VAL];
                $load = ((float) $load_one)/$this->cpus;

                return $load;
        }
}

class ClusterImage {

        var $dataget, $image, $clustername;
        var $filtername, $filters;

        //function ClusterImage( $clustername ) {
        function ClusterImage( $data, $clustername ) {

                //$this->dataget                = $dataget;
                $this->dataget          = new DataGatherer( $clustername );
                $this->data             = $data;
                $this->clustername      = $clustername;
                $this->filters          = array();
                $this->size             = 's';
                $this->width            = 0;
                $this->height           = 0;
                $this->output           = 1;
        }

        function getWidth() {
                return $this->width;
        }
        function getHeight() {
                return $this->height;
        }

        function setSmall() {
                $this->size     = 's';
        }

        function setBig() {
                $this->size     = 'b';
        }

        function setNoimage() {
                $this->output   = 0;
        }

        function isSmall() {
                return ($this->size == 's');
        }

        function isBig() {
                return ($this->size == 'b');
        }

        function setFilter( $filtername, $filtervalue ) {

                $this->filters[$filtername] = $filtervalue;
        }

        function filterNodes( $jobs, $nodes ) {

                $filtered_nodes = array();

                foreach( $nodes as $node ) {

                        $hostname = $node->getHostname();

                        $addhost = 1;

                        if( count( $this->filters ) > 0 ) {

                                $mynjobs = $node->getJobs();

                                if( count( $mynjobs ) > 0 ) {

                                        foreach( $mynjobs as $myjob ) {

                                                foreach( $this->filters as $filtername => $filtervalue ) {

                                                        if( $filtername!=null && $filtername!='' ) {

                                                                if( $filtername == 'jobid' && !$node->hasJob( $filtervalue) ) {
                                                                        $addhost = 0;
                                                                } else if( $filtername != 'jobid' ) {
                                                                        if( $jobs[$myjob][$filtername] != $filtervalue ) {
                                                                                $addhost = 0;
                                                                        }
                                                                }
                                                        }
                                                }
                                        }
                                } else
                                        $addhost = 0;
                        }

                        if( $addhost )
                                $filtered_nodes[] = $hostname;
                }

                return $filtered_nodes;
        }

        function draw() {

                global $SMALL_CLUSTERIMAGE_MAXWIDTH, $SMALL_CLUSTERIMAGE_NODEWIDTH;
                global $BIG_CLUSTERIMAGE_MAXWIDTH, $BIG_CLUSTERIMAGE_NODEWIDTH;

                global $SORTBY_HOSTNAME, $SORT_ORDER, $skan_str;
                global $x_first, $y_first;

                global $SORT_XLABEL, $SORT_YLABEL;
        
                $mydatag = $this->dataget;
                $mydatag->parseXML( $this->data );

                if( $this->isSmall() ) {
                        $max_width = $SMALL_CLUSTERIMAGE_MAXWIDTH;
                        $node_width = $SMALL_CLUSTERIMAGE_NODEWIDTH;
                } else if( $this->isBig() ) {
                        $max_width = $BIG_CLUSTERIMAGE_MAXWIDTH;
                        $node_width = $BIG_CLUSTERIMAGE_NODEWIDTH;
                }

                $nodes = $mydatag->getNodes();
                $nodes_hosts = array_keys( $nodes );

                $nodes_nr = count( $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 );
                        }
                }

                $y_offset       = 0;
                $font           = 2;
                $fontwidth      = ImageFontWidth( $font );
                $fontheight     = ImageFontHeight( $font );
                $fontspaceing   = 2;
                $y_offset       = $fontheight + (2 * $fontspaceing);

                $this->width    = $max_width;
                $this->height   = ($y_offset + (($node_rows*$node_width)+1) );

                //$image = imageCreateTrueColor( $max_width, ($y_offset + (($node_rows*$node_width)+1) ) );
                //$colorwhite = imageColorAllocate( $image, 255, 255, 255 );
                //imageFill( $image, 0, 0, $colorwhite );

                //if( $this->isSmall() ) {

                //      $colorblue      = imageColorAllocate( $image, 0, 0, 255 );

                //      imageString( $image, $font, 2, 2, "Monarch Joblist - cluster: ".$this->clustername, $colorblue );
                //}

                $jobs = $mydatag->getJobs();
                //printf("filtername = %s\n", $filtername );
                $filtered_nodes = $this->filterNodes( $jobs, $nodes );

                //print_r($filtered_nodes);

                if( $SORTBY_HOSTNAME != "" )
                {

                        $sorted         = array();

                        $x_first        = 0;
                        $y_first        = 0;


                        if( strpos( $SORTBY_HOSTNAME, "{x}" ) < strpos( $SORTBY_HOSTNAME, "{y}" ) )
                        {
                        
                                $x_first        = 1;
                        }
                        else
                        {
                                $y_first        = 1;
                
                        }

                        $skan_str       = str_replace( "{x}", "%d", $SORTBY_HOSTNAME );
                        $skan_str       = str_replace( "{y}", "%d", $skan_str );

                        $x_min          = null;
                        $x_max          = null;
                        $y_min          = null;
                        $y_max          = null;

                        foreach( $nodes as $hostname => $node )
                        {
                                //$n    = sscanf( $hostname, $skan_str, $i, $j );
                                if( $x_first )
                                {
                                        $n = sscanf( $hostname, $skan_str, $x, $y );
                                }
                                else if( $y_first )
                                {
                                        $n = sscanf( $hostname, $skan_str, $y, $x );
                                }

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

                                // Remove nodes that don't match
                                //
                                if( $n < 2 )
                                {
                                        unset( $nodes[$hostname] );
                                }

                                if( !$x_min )
                                {
                                        $x_min  = $x;
                                }
                                else if( $x < $x_min )
                                {
                                        $x_min  = $x;
                                }
                                if( !$x_max )
                                {
                                        $x_max  = $x;
                                }
                                else if( $x > $x_max )
                                {
                                        $x_max  = $x;
                                }
                                if( !$y_min )
                                {
                                        $y_min  = $y;
                                }
                                else if( $y < $y_min )
                                {
                                        $y_min  = $y;
                                }
                                if( !$y_max )
                                {
                                        $y_max  = $y;
                                }
                                else if( $y > $y_max )
                                {
                                        $y_max  = $y;
                                }
                        }

                        //printf( "ss %s\n", $skan_str);
                        $sorted_nodes   = usort( $nodes, "cmp" );

                        $cur_node       = 0;

                        $x_offset       = 0;
                        $y_offset       = 0;
                        $font           = 2;
                        $fontwidth      = ImageFontWidth( $font );
                        $fontheight     = ImageFontHeight( $font );
                        $fontspaceing   = 2;

                        if( $this->isBig() ) 
                        {

                                $y_offset       = ($fontheight * (1 + strlen( $x_max) ) ) + ((2 + strlen( $x_max)) * $fontspaceing);
                                $x_offset       = ($fontwidth * (1 + strlen( $y_max) ) ) + ((2 + strlen( $y_max)) * $fontspaceing);

                        }
                        //$x_offset     = ($fontwidth * 3) + (5 * $fontspaceing);

                        //printf( "xmin %s xmax %s\n", $x_min, $x_max );
                        //printf( "ymin %s ymax %s\n", $y_min, $y_max );

                        // werkt
                        //print_r( $nodes );

                        $image_width    = $x_offset + ($node_width * ($x_max-$x_min+2));
                        $image_width    = ($image_width < $this->width) ? $image_width : $this->width;
                        $image_height   = $y_offset + ($node_width * ($y_max-$y_min+2));

                        $this->width    = $image_width;
                        $this->heigth   = $image_heigth;

                        $image          = imageCreateTrueColor( $image_width, $image_height );
                        $colorwhite     = imageColorAllocate( $image, 255, 255, 255 );

                        imageFill( $image, 0, 0, $colorwhite );

                        if( $this->isBig() ) 
                        {
                                $colorblue      = imageColorAllocate( $image, 0, 0, 255 );

                                imageString( $image, $font, $x_offset, $fontspaceing, $SORT_XLABEL, $colorblue );

                                // Stupid php without imageStringDown function
                                //
                                imageStringDown( $image, $font, $fontspaceing, $y_offset, $SORT_YLABEL, $colorblue );
                        }

                        for( $n = $x_min; $n <= $x_max; $n++ )
                        {
                                for( $m = $y_min; $m <= $y_max; $m++ )
                                {
                                        if( $x_min > 0 )
                                        {
                                                $x      = $x_offset + ( ($n-$x_min) * $node_width );
                                        }
                                        if( $y_min > 0 )
                                        {
                                                $y      = $y_offset + ( ($m-$y_min) * $node_width );
                                        }

                                        if( isset( $nodes[$cur_node] ) ) 
                                        {
                                                $host   = $nodes[$cur_node]->getHostname();

                                                if( $x_first )
                                                {
                                                        $nn = sscanf( $host, $skan_str, $rx, $ry );
                                                }
                                                else if( $y_first )
                                                {
                                                        $nn = sscanf( $host, $skan_str, $ry, $rx );
                                                }
                                                if ( $nn < 2 )
                                                {
                                                        continue;
                                                }
                                                if( ( $rx ) > $n )
                                                {
                                                        $m      = $y_max + 1;
                                                        continue;
                                                }

                                                if( !in_array( $host, $filtered_nodes ) )
                                                        $nodes[$cur_node]->setShowinfo( 0 );

                                                $nodes[$cur_node]->setCoords( $x, $y );
                                                $nodes[$cur_node]->setImage( $image );

                                                //print_r( $nodes[$cur_node] );

                                                if( $this->isSmall() )
                                                        $nodes[$cur_node]->drawSmall();
                                                else if( $this->isBig() )
                                                        $nodes[$cur_node]->drawBig();
                                        }
                                        if( $n == $x_min )
                                        {
                                                $mfontspacing   = 1;
                                                $ylabel_x       = $x - ( $fontwidth * strlen( $y_max ) ) - $mfontspacing;
                                                $ylabel_y       = $y;

                                                imageString( $image, $font, $ylabel_x, $ylabel_y, strval( $m ), $colorblue );
                                        }
                                        if( $m == $y_min )
                                        {
                                                $mfontspacing   = 2;
                                                $xlabel_y       = $y - ( $fontheight * strlen( $x_max ) );
                                                $xlabel_x       = $x + $mfontspacing; 

                                                imageStringDown( $image, $font, $xlabel_x, $xlabel_y, strval( $n ), $colorblue );
                                        }

                                        $cur_node++;
                                }
                        }

                }
                else
                {
                        $image          = imageCreateTrueColor( $max_width, ($y_offset + (($node_rows*$node_width)+1) ) );
                        $colorwhite     = imageColorAllocate( $image, 255, 255, 255 );

                        imageFill( $image, 0, 0, $colorwhite );

                        if( $this->isSmall() ) {

                                $colorblue      = imageColorAllocate( $image, 0, 0, 255 );

                                imageString( $image, $font, 2, 2, "Monarch Joblist - cluster: ".$this->clustername, $colorblue );
                        }

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

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

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

                                                $nodes[$host]->setCoords( $x, $y );
                                                $nodes[$host]->setImage( $image );

                                                if( !in_array( $host, $filtered_nodes ) )
                                                        $nodes[$host]->setShowinfo( 0 );

                                                if( $this->isSmall() )
                                                        $nodes[$host]->drawSmall();
                                                else if( $this->isBig() )
                                                        $nodes[$host]->drawBig();
                                        }
                                }
                        }
                }
        
                $this->nodes    = &$nodes;

                if ($this->output) {
                        header( 'Content-type: image/png' );
                        imagePNG( $image );
                        imageDestroy( $image );
                }
        }

        function getImagemapArea() {

                $clusterimage_map       = "";

                foreach( $this->nodes as $hostname => $node ) {

                        $node_map               = $node->getImagemapArea();
                        $clusterimage_map       .= $node_map;
                }

                return $clusterimage_map;
        }
}

class EmptyImage {

        function draw() {
                $image          = imageCreateTrueColor( 1, 1 );
                $colorwhite     = imageColorAllocate( $image, 255, 255, 255 );
                imageFill( $image, 0, 0, $colorwhite );                         

                header( 'Content-type: image/png' );
                imagePNG( $image );
                imageDestroy( $image );
        }
}

class HostImage {

        var $data_gather, $cluster, $host, $node, $image;
        var $headerstrlen;

        function HostImage( $data_gather, $cluster, $host ) {

                $this->data_gather      = $data_gather;
                $this->cluster          = $cluster;
                $this->host             = $host;
                $this->y_offset         = 0;
                $this->font             = 2;
                $this->fontspaceing     = 2;
                $this->headerstrlen     = array();

                $this->fontheight       = ImageFontHeight( $this->font );
                $this->fontwidth        = ImageFontWidth( $this->font );

                $dg                     = &$this->data_gather;
                $this->node             = &$dg->getNode( $this->host );
                $n                      = &$this->node;
                $this->njobs            = $n->getJobs();
        }

        function drawJobs() {

                $dg                     = &$this->data_gather;
                $colorblack             = imageColorAllocate( $this->image, 0, 0, 0 );

                for( $n = 0; $n < count( $this->njobs ); $n++ ) {

                        $jobid                  = $this->njobs[$n];
                        $jobinfo                = $dg->getJob( $jobid );

                        $xoffset                = 5;
                        imageString( $this->image, $this->font, $xoffset, $this->y_offset, strval( $jobid ), $colorblack );

                        foreach( $this->headerstrlen as $headername => $headerlen ) {

                                if( $headername == 'nodes' ) {
                                        $attrval        = strval( count( $jobinfo[nodes] ) );
                                } else if( $headername == 'cpus' ) {

                                        if( !isset( $jobinfo[ppn] ) )
                                                $jobinfo[ppn] = 1;

                                        $attrval        = strval( count( $jobinfo[nodes] ) * intval( $jobinfo[ppn] ) );

                                } else if( $headername == 'runningtime' ) {
                                        $attrval        = makeTime( intval( $jobinfo[reported] ) - intval( $jobinfo[start_timestamp] ) );
                                } else {
                                        $attrval        = strval( $jobinfo[$headername] );
                                }

                                imageString( $this->image, $this->font, $xoffset, $this->y_offset, $attrval, $colorblack );
                
                                $xoffset        = $xoffset + ($this->fontwidth * ( $headerlen + 1 ) );

                        }
                        
                        $this->newLineOffset();
                }
        }

        function drawHeader() {

                $dg                     = &$this->data_gather;

                for( $n = 0; $n < count( $this->njobs ); $n++ ) {

                        $jobid                  = $this->njobs[$n];
                        $jobinfo                = $dg->getJob( $jobid );

                        if( !isset( $this->headerstrlen[id] ) )
                                $this->headerstrlen[id] = strlen( strval( $jobid ) );
                        else
                                if( strlen( strval( $jobid ) ) > $this->headerstrlen[id] )
                                        $this->headerstrlen[id] = strlen( strval( $jobid ) );

                        if( !isset( $this->headerstrlen[owner] ) )
                                $this->headerstrlen[owner]      = strlen( strval( $jobinfo[owner] ) );
                        else
                                if( strlen( strval( $jobinfo[owner] ) ) > $this->headerstrlen[owner] )
                                        $this->headerstrlen[owner]      = strlen( strval( $jobinfo[owner] ) );

                        if( !isset( $this->headerstrlen[queue] ) )
                                $this->headerstrlen[queue]      = strlen( strval( $jobinfo[queue] ) );
                        else
                                if( strlen( strval( $jobinfo[queue] ) ) > $this->headerstrlen[queue] )
                                        $this->headerstrlen[queue]      = strlen( strval( $jobinfo[queue] ) );

                        if( !isset( $jobinfo[ppn] ) )
                                $jobinfo[ppn] = 1;

                        $cpus                   = count( $jobinfo[nodes] ) * intval( $jobinfo[ppn] );

                        if( !isset( $this->headerstrlen[cpus] ) )
                                $this->headerstrlen[cpus]       = strlen( strval( $cpus ) );
                        else
                                if( strlen( strval( $cpus ) ) > $this->headerstrlen[cpus] )
                                        $this->headerstrlen[cpus]       = strlen( strval( $cpus ) );

                        $nodes                  = count( $jobinfo[nodes] );

                        if( !isset( $this->headerstrlen[nodes] ) )
                                $this->headerstrlen[nodes]      = strlen( strval( $nodes ) );
                        else
                                if( strlen( strval( $nodes) ) > $this->headerstrlen[nodes] )
                                        $this->headerstrlen[nodes]      = strlen( strval( $nodes ) );

                        $runningtime            = makeTime( intval( $jobinfo[reported] ) - intval( $jobinfo[start_timestamp] ) );

                        if( !isset( $this->headerstrlen[runningtime] ) )
                                $this->headerstrlen[runningtime]        = strlen( strval( $runningtime) );
                        else
                                if( strlen( strval( $runningtime) ) > $this->headerstrlen[runningtime] )
                                        $this->headerstrlen[runningtime]        = strlen( strval( $runningtime) );

                        if( !isset( $this->headerstrlen[name] ) )
                                $this->headerstrlen[name]       = strlen( strval( $jobinfo[name] ) );
                        else
                                if( strlen( strval( $jobinfo[name] ) ) > $this->headerstrlen[name] )
                                        $this->headerstrlen[name]       = strlen( strval( $jobinfo[name] ) );

                }

                $xoffset        = 5;

                foreach( $this->headerstrlen as $headername => &$headerlen ) {

                        $colorgreen     = imageColorAllocate( $this->image, 0, 200, 0 );

                        imageString( $this->image, $this->font, $xoffset, $this->y_offset, ucfirst( $headername ), $colorgreen );
                
                        if( $headerlen < strlen( $headername ) )
                                $headerlen      = strlen( $headername );

                        $xoffset        = $xoffset + ($this->fontwidth * ( $headerlen + 1 ) );

                }
                $this->newLineOffset();
        }

        function newLineOffset() {

                $this->y_offset         = $this->y_offset + $this->fontheight + $this->fontspaceing;
        }

        function draw() {

                $xlen           = 450;
                $ylen           = ( count( $this->njobs ) * ( $this->fontheight + $this->fontspaceing ) ) + (3 * $this->fontheight);

                $this->image    = imageCreateTrueColor( $xlen, $ylen );
                $colorwhite     = imageColorAllocate( $this->image, 255, 255, 255 );
                imageFill( $this->image, 0, 0, $colorwhite );                         

                $colorblue      = imageColorAllocate( $this->image, 0, 0, 255 );

                imageString( $this->image, $this->font, 1, $this->y_offset, "Monarch Joblist - host: ".$this->host, $colorblue );
                $this->newLineOffset();

                $this->drawHeader();
                $this->drawJobs();

                header( 'Content-type: image/png' );
                imagePNG( $this->image );
                imageDestroy( $this->image );
        }
}

function imageStringDown( &$image, $font, $x, $y, &$s, &$col )
{
        $fw     = imagefontwidth( $font);
        $fh     = imagefontheight( $font);
        
        $fontspacing = 0;

        $fx     = $x;
        $fy     = $y;

        for( $n=0; $n<strlen( $s ); $n++ )
        {
                $myc    = $s{$n};

                imagestring( $image, $font, $fx, $fy, $myc, $col );

                $fy     += ($fontspacing + $fh );
        }
}

function array_rem( $val, &$arr )
{
        // Delete val from arr
        //
        $i      = array_search( $val, $arr );

        if( $i == false ) return false;

        $arr    = array_merge( array_slice( $arr, 0, $i ), array_slice( $arr, $i+1, count( $arr ) ) );

        return true;
}

function cmp( $a, $b ) 
{
        global $SORT_ORDER;
        global $skan_str;
        global $x_first, $y_first;

        $a_node         = $a;
        $b_node         = $b;
        $a              = $a_node->getHostname();
        $b              = $b_node->getHostname();

        if( $a == $b ) return 0;

        if( $x_first )
        {
                $n = sscanf( $a, $skan_str, $a_x, $a_y );
                $n = sscanf( $b, $skan_str, $b_x, $b_y );
        }
        else if( $y_first )
        {
                $n = sscanf( $a, $skan_str, $a_y, $a_x );
                $n = sscanf( $b, $skan_str, $b_y, $b_x );
        }

        if ( $SORT_ORDER=="desc" )
        {

                // 1  = a < b
                // -1 = a > b
                //
                if ($a_x == $b_x)
                {
                        if ($a_y < $b_y)
                        {
                                return 1;
                        }
                        else if ($a_y > $b_y)
                        {
                                return -1;
                        }
                }
                else if ($a_x < $b_x)
                {
                        return 1;
                }
                else if ($a_x > $b_x)
                {
                        return -1;
                }
        }
        else if ( $SORT_ORDER == "asc" )
        {

                // 1  = a > b
                // -1 = a < b
                //
                if ($a_x == $b_x)
                {
                        if ($a_y > $b_y)
                        {
                                return 1;
                        }
                        else if ($a_y < $b_y)
                        {
                                return -1;
                        }
                }
                else if ($a_x > $b_x)
                {
                        return 1;
                }
                else if ($a_x < $b_x)
                {
                        return -1;
                }
        }
}
function makeTime( $time ) {

        $days = intval( $time / 86400 );
        $time = ($days>0) ? $time % ($days * 86400) : $time;

        //printf( "time = %s, days = %s\n", $time, $days );

        $date_str = '';
        $day_str = '';

        if( $days > 0 ) {
                if( $days > 1 )
                        $day_str .= $days . ' days';
                else
                        $day_str .= $days . ' day';
        }

        $hours = intval( $time / 3600 );
        $time = $hours ? $time % ($hours * 3600) : $time;

        //printf( "time = %s, days = %s, hours = %s\n", $time, $days, $hours );
        if( $hours > 0 ) {
                $date_str .= $hours . ':';
                $date_unit = 'hours'; 
        }

        $minutes = intval( $time / 60 );
        $seconds = $minutes ? $time % ($minutes * 60) : $time;

        if( $minutes > 0 ) {

                if( $minutes >= 10 )
                        $date_str .= $minutes . ':';
                else
                        $date_str .= '0' . $minutes . ':';

                $date_unit = (!isset($date_unit)) ? 'minutes' : $date_unit;
        } else {
                if($hours > 0 ) {
                        $date_str .= '00:';
                        $date_unit = (!isset($date_unit)) ? 'minutes' : $date_unit;
                }
        }


        $date_unit = (!isset($date_unit)) ? 'seconds' : $date_unit;

        if( $seconds > 0 ) {

                if( $seconds >= 10 )
                        $date_str .= $seconds . ' ' . $date_unit;
                else
                        $date_str .= '0' . $seconds . ' ' . $date_unit;

        } else if ( $hours > 0 or $minutes > 0 )

                $date_str .= '00 ' . $date_unit;

        if( $days > 0) {

                if( $hours > 0 or $minutes > 0 or $seconds > 0 )
                        $date_str = $day_str . ' - ' . $date_str;
                else
                        $date_str = $day_str;
        }

        return $date_str;
}
?>