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<?php
# Collectd Default type
class Type_Default {
var $datadir;
var $args;
var $data_sources;
var $order;
var $ds_names;
var $colors;
var $rrd_title;
var $rrd_vertical;
var $rrd_format;
var $scale;
var $width;
var $heigth;
function validate_color($color) {
if (!preg_match('/^[0-9a-f]{6}$/', $color))
return '000000';
else
return $color;
}
function get_faded_color($fgc, $bgc='ffffff', $percent=0.25) {
$fgc = $this->validate_color($fgc);
if (!is_numeric($percent))
$percent=0.25;
$rgb = array('r', 'g', 'b');
$fg[r] = hexdec(substr($fgc,0,2));
$fg[g] = hexdec(substr($fgc,2,2));
$fg[b] = hexdec(substr($fgc,4,2));
$bg[r] = hexdec(substr($bgc,0,2));
$bg[g] = hexdec(substr($bgc,2,2));
$bg[b] = hexdec(substr($bgc,4,2));
foreach ($rgb as $pri) {
$c[$pri] = dechex(round($percent * $fg[$pri]) + ((1.0 - $percent) * $bg[$pri]));
if ($c[$pri] == '0')
$c[$pri] = '00';
}
return $c[r].$c[g].$c[b];
}
function get_filename($tinstance=NULL) {
if (!is_array($this->args['tinstance']) && $tinstance == NULL)
$tinstance = $this->args['tinstance'];
$search = array('{host}', '{plugin}', '{pinstance}', '{type}', '{tinstance}');
$replace = array($this->args['host'], $this->args['plugin'], $this->args['pinstance'], $this->args['type'], $tinstance);
$f = $this->datadir . '/' . str_replace($search, $replace, $this->path_format);
return $f;
}
function rrd_graph($debug=false) {
$graphdata = $this->rrd_gen_graph();
if(!$debug) {
# caching
header("Expires: " . date(DATE_RFC822,strtotime("90 seconds")));
header("content-type: image/png");
$graphdata = implode(' ', $graphdata);
echo `$graphdata`;
} else {
print '<pre>';
print_r($graphdata);
print '</pre>';
}
}
function rrd_gen_graph() {
$filename = $this->get_filename();
$rrdgraph[] = '/usr/bin/rrdtool graph - -a PNG';
$rrdgraph[] = sprintf('-w %d', is_numeric($this->width) ? $this->width : 400);
$rrdgraph[] = sprintf('-h %d', is_numeric($this->heigth) ? $this->heigth : 175);
$rrdgraph[] = '-l 0';
$rrdgraph[] = sprintf('-t "%s"', $this->rrd_title);
$rrdgraph[] = sprintf('-v "%s"', $this->rrd_vertical);
$rrdgraph[] = sprintf('-s -%d', is_numeric($this->seconds) ? $this->seconds : 86400);
if (is_array($this->args['tinstance']))
$array = is_array($this->order) ? $this->order : $this->args['tinstance'];
else
$array = $this->data_sources;
$i=0;
foreach ($array as $value) {
if (is_array($this->args['tinstance'])) {
$filename = $this->get_filename($value);
$ds = $this->data_sources[0];
} else {
$filename = $this->get_filename();
$ds = $value;
}
$rrdgraph[] = sprintf('DEF:min%s=%s:%s:MIN', $i, $filename, $ds);
$rrdgraph[] = sprintf('DEF:avg%s=%s:%s:AVERAGE', $i, $filename, $ds);
$rrdgraph[] = sprintf('DEF:max%s=%s:%s:MAX', $i, $filename, $ds);
$i++;
}
if (!is_array($this->args['tinstance'])) {
$rrdgraph[] = sprintf('AREA:max0#%s', $this->get_faded_color($this->colors[$this->data_sources[0]]));
$rrdgraph[] = sprintf('AREA:min0#%s', 'ffffff');
}
$i=0;
foreach ($array as $value) {
$dsname = $this->ds_names[$value] != '' ? $this->ds_names[$value] : $value;
$color = is_array($this->colors) ? $this->colors[$value]: $this->colors;
$rrdgraph[] = sprintf('LINE1:avg%d#%s:\'%s\'', $i, $this->validate_color($color), $dsname);
$rrdgraph[] = sprintf('GPRINT:min%d:MIN:\'%s Min,\'', $i, $this->rrd_format);
$rrdgraph[] = sprintf('GPRINT:avg%d:AVERAGE:\'%s Avg,\'', $i, $this->rrd_format);
$rrdgraph[] = sprintf('GPRINT:max%d:MAX:\'%s Max,\'', $i, $this->rrd_format);
$rrdgraph[] = sprintf('GPRINT:avg%d:LAST:\'%s Last\\l\'', $i, $this->rrd_format);
$i++;
}
return $rrdgraph;
}
}
?>
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