function execute_graph_command($graph_engine, $command)
{
global $debug;
// Make sure the image is not cached
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
// Date in the past
// always modified
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-cache, must-revalidate");
// HTTP/1.1
header("Pragma: no-cache");
// HTTP/1.0
if ($debug > 2) {
header("Content-type: text/html");
print "<html><body>";
switch ($graph_engine) {
case "flot":
case "rrdtool":
print htmlentities($command);
break;
case "graphite":
print $command;
break;
}
print "</body></html>";
} else {
header("Content-type: image/png");
switch ($graph_engine) {
case "flot":
case "rrdtool":
if (strlen($command) < 100000) {
my_passthru($command);
} else {
$tf = tempnam("/tmp", "ganglia-graph");
file_put_contents($tf, $command);
my_passthru("/bin/bash {$tf}");
unlink($tf);
}
break;
case "graphite":
echo file_get_contents($command);
break;
}
}
}
$command .= $total_cmd . $mean_cmd;
$command .= " COMMENT:'\\j'";
$command .= " GPRINT:'total':AVERAGE:'Avg Total\\: %5.2lf'";
$command .= " GPRINT:'total':LAST:'Current Total\\: %5.2lf\\c'";
$command .= " GPRINT:'mean':AVERAGE:'Avg Average\\: %5.2lf'";
$command .= " GPRINT:'mean':LAST:'Current Average\\: %5.2lf\\c'";
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");
if (isset($_GET['debug'])) {
header("Content-type: text/plain");
echo $command;
} else {
header("Content-type: image/png");
my_passthru($command);
}
function HSV_TO_RGB($H, $S, $V)
{
if ($S == 0) {
$R = $G = $B = $V * 255;
} else {
$var_H = $H * 6;
$var_i = floor($var_H);
$var_1 = $V * (1 - $S);
$var_2 = $V * (1 - $S * ($var_H - $var_i));
$var_3 = $V * (1 - $S * (1 - ($var_H - $var_i)));
if ($var_i == 0) {
$var_R = $V;
$var_G = $var_3;
$var_B = $var_1;
