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<?php
//////////////////////////////////////////////////////////////////////////////
// Authors: Cal Henderson and Gilad Raphaelli
//////////////////////////////////////////////////////////////////////////////
session_start();
$conf['gweb_root'] = dirname(__FILE__);
include_once $conf['gweb_root'] . "/eval_conf.php";
include_once $conf['gweb_root'] . "/functions.php";
$clustername = $_REQUEST['c'];
$metricname = $_REQUEST['m'];
$range = $_REQUEST['r'];
$cs = isset($_GET["cs"]) ?
sanitize(htmlentities($_REQUEST["cs"])) : NULL;
$ce = isset($_GET["ce"]) ?
sanitize(htmlentities($_REQUEST["ce"])) : NULL;
$start = ($cs and (is_numeric($cs) or strtotime($cs))) ?
$cs : '-' . $conf['time_ranges'][$range] . 's';
$end = ($ce and (is_numeric($ce) or strtotime($ce))) ? $ce : 'N';
$command = '';
if (isset($_SESSION['tz']) && ($_SESSION['tz'] != ''))
$command .= "TZ='" . sanitize($_SESSION['tz']) . "' ";
$command .= $conf['rrdtool'] . " graph - $rrd_options -E";
$command .= " --start '" . sanitize($start) . "'";
$command .= " --end '" . sanitize($end) . "'";
$command .= " --width 700";
$command .= " --height 300";
$title .= isset($_GET['title']) ?
$_GET['title'] : "$clustername aggregated $metricname last $range";
$command .= " --title " . escapeshellarg($title);
if (isset($_GET['x']))
$command .= " --upper-limit " . sanitize($_GET[x]);
if (isset($_GET['n']))
$command .= " --lower-limit " . sanitize($_GET[n]);
if (isset($_GET['x']) || isset($_GET['n'])) {
$command .= " --rigid";
} else {
$command .= " --upper-limit '0'";
$command .= " --lower-limit '0'";
}
if (isset($_GET['vl']))
$command .= " --vertical-label " . sanitize($_GET['vl']);
$total_cmd = " CDEF:total=0";
# The total,POP sequence is a workaround to meet the requirement that CDEFS
# must contain a DEF or CDEF
$last_total_cmd = " CDEF:last_total=total,POP,0";
# We'll get the list of hosts from here
retrieve_metrics_cache();
#####################################################################
# Keep track of maximum host length so we can neatly stack metrics
$max_len = 0;
$hosts = array();
foreach ($index_array['cluster'] as $host => $cluster_array ) {
foreach ($cluster_array as $cluster) {
// Check cluster name
if ($cluster == $clustername &&
file_exists($conf['rrds'] . "/$clustername/$host/$metricname.rrd")) {
// If host regex is specified make sure it matches
$add_host = (isset($_REQUEST["host_regex"]) &&
!preg_match("/" . $_REQUEST["host_regex"] . "/", $host)) ?
FALSE : TRUE;
if ($add_host) {
$hosts[] = $host;
$host_len = ($conf['strip_domainname']) ?
strlen(strip_domainname($host)) : strlen($host);
$max_len = max($host_len, $max_len);
}
}
}
}
// Force all hosts to be in name order
sort($hosts);
foreach ($hosts as $index => $host) {
$rrd = $conf['rrds'] . "/$clustername/$host/$metricname.rrd";
$command .= " DEF:a$index='$rrd':sum:AVERAGE";
$command .= " VDEF:l$index=a$index,LAST";
$total_cmd .= ",a$index,ADDNAN";
$last_total_cmd .= ",l$index,ADDNAN";
}
$num_hosts = count($hosts);
$mean_cmd = " CDEF:mean=total,$num_hosts,/";
$last_mean_cmd = " CDEF:last_mean=last_total,$num_hosts,/";
foreach ($hosts as $index => $host) {
if ($index == 0) {
$gtype = "AREA";
$color = get_col(0);
} else {
$gtype = "STACK";
$cx = $index / (1 + count($hosts));
$color = get_col($cx);
}
if ($conf['strip_domainname'])
$host = strip_domainname($host);
$command .= " $gtype:a$index#$color:'" .
str_pad($host, $max_len + 1, ' ', STR_PAD_RIGHT) . "'";
}
$command .= $total_cmd . $mean_cmd . $last_total_cmd . $last_mean_cmd;
$command .= " COMMENT:'\\j'";
$command .= " GPRINT:'total':AVERAGE:'Avg Total\: %5.2lf'";
$command .= " GPRINT:'last_total':LAST:'Current Total\: %5.2lf\\c'";
$command .= " GPRINT:'mean':AVERAGE:'Avg Average\: %5.2lf'";
$command .= " GPRINT:'last_mean':AVERAGE:'Current Average\: %5.2lf\\c'";
header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header ("Cache-Control: no-cache, must-revalidate");
header ("Pragma: no-cache");
if (isset($_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 = $var_1;
} else if ($var_i == 1) {
$var_R = $var_2;
$var_G = $V;
$var_B = $var_1;
} else if ($var_i == 2) {
$var_R = $var_1;
$var_G = $V;
$var_B = $var_3;
} else if ($var_i == 3) {
$var_R = $var_1;
$var_G = $var_2;
$var_B = $V;
} else if ($var_i == 4) {
$var_R = $var_3;
$var_G = $var_1;
$var_B = $V;
} else if ($var_i == 5) {
$var_R = $V;
$var_G = $var_1;
$var_B = $var_2;
} else {
return array(255, 255, 255);
}
$R = $var_R * 255;
$G = $var_G * 255;
$B = $var_B * 255;
}
return array($R, $G, $B);
}
function get_col($value) {
list($r, $g, $b) = HSV_TO_RGB($value, 1, 0.9);
return sprintf('%02X%02X%02X', $r, $g, $b);
}
?>
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