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<?php
/*
* graph_cpu.php
*
* part of pfSense (https://www.pfsense.org)
* Copyright (c) 2004-2016 Rubicon Communications, LLC (Netgate)
* Copyright (c) 2004-2006 T. Lechat <dev@lechat.org>
* Copyright (c) 2004-2006 Jonathan Watt <jwatt@jwatt.org>
* All rights reserved.
*
* originally based on m0n0wall (http://m0n0.ch/wall)
* Copyright (c) 2003-2004 Manuel Kasper <mk@neon1.net>.
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
##|+PRIV
##|*IDENT=page-diagnostics-cpuutilization
##|*NAME=Diagnostics: CPU Utilization
##|*DESCR=Allow access to the 'Diagnostics: CPU Utilization' page.
##|*MATCH=graph_cpu.php*
##|*MATCH=stats.php*
##|-PRIV
require_once("guiconfig.inc");
header("Last-Modified: " . gmdate("D, j M Y H:i:s") . " GMT");
header("Expires: " . gmdate("D, j M Y H:i:s", time()) . " GMT");
header("Cache-Control: no-cache, no-store, must-revalidate"); // HTTP/1.1
header("Pragma: no-cache"); // HTTP/1.0
header("Content-type: image/svg+xml");
/********* Other conf *******/
$nb_plot = 120; // maximum number of data points to plot in the graph
$fetch_link = "stats.php?stats=cpu";
//SVG attributes
$attribs['axis']='fill="black" stroke="black"';
$attribs['cpu']='fill="#FF0000" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="7"';
$attribs['graph_cpu']='fill="none" stroke="#FF0000" stroke-opacity="0.8"';
$attribs['legend']='fill="black" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="4"';
$attribs['grid_txt']='fill="gray" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="6"';
$attribs['grid']='stroke="gray" stroke-opacity="0.5"';
$attribs['error']='fill="blue" font-family="Arial" font-size="4"';
$attribs['collect_initial']='fill="gray" font-family="Tahoma, Verdana, Arial, Helvetica, sans-serif" font-size="4"';
$height=100; // SVG internal height : do not modify
$width=200; // SVG internal width : do not modify
/********* Graph DATA **************/
print('<?xml version="1.0" encoding="UTF-8"?>' . "\n");?>
<svg width="100%" height="100%" viewBox="0 0 <?=$width?> <?=$height?>" preserveAspectRatio="none" xml:space="preserve" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" onload="init(evt);">
<g id="graph">
<rect id="bg" x1="0" y1="0" width="100%" height="100%" fill="white"/>
<line id="axis_x" x1="0" y1="0" x2="0" y2="100%" <?=$attribs['axis']?>/>
<line id="axis_y" x1="0" y1="100%" x2="100%" y2="100%" <?=$attribs['axis']?>/>
<polygon id="axis_arrow_x" <?=$attribs['axis']?> points="<?=($width) . "," . ($height)?> <?=($width-2) . "," . ($height-2)?> <?=($width-2) . "," . $height?>"/>
<path id="graph_cpu" d="" <?=$attribs['graph_cpu']?>/>
<path id="grid" d="M0 <?=$height/4*1?> L <?=$width?> <?=$height/4*1?> M0 <?=$height/4*2?> L <?=$width?> <?=$height/4*2?> M0 <?=$height/4*3?> L <?=$width?> <?=$height/4*3?>" <?=$attribs['grid']?>/>
<text id="grid_txt1" x="100%" y="25%" <?=$attribs['grid_txt']?> text-anchor="end">75%</text>
<text id="grid_txt2" x="100%" y="50%" <?=$attribs['grid_txt']?> text-anchor="end">50%</text>
<text id="grid_txt3" x="100%" y="75%" <?=$attribs['grid_txt']?> text-anchor="end">25%</text>
<text id="graph_cpu_txt" x="4" y="8" <?=$attribs['cpu']?>> </text>
<text id="error" x="50%" y="50%" visibility="hidden" <?=$attribs['error']?> text-anchor="middle"><?=gettext("Cannot get CPU load"); ?></text>
<text id="collect_initial" x="50%" y="50%" visibility="hidden" <?=$attribs['collect_initial']?> text-anchor="middle"><?=gettext("Collecting initial data, please wait"); ?>...</text>
</g>
<script type="text/ecmascript">
<![CDATA[
/**
* getURL is a proprietary Adobe function, but it's simplicity has made it very
* popular. If getURL is undefined we spin our own by wrapping XMLHttpRequest.
*/
if (typeof getURL == 'undefined') {
getURL = function(url, callback) {
if (!url) {
throw '<?=gettext("No URL for getURL"); ?>';
}
try {
if (typeof callback.operationComplete == 'function') {
callback = callback.operationComplete;
}
} catch (e) {}
if (typeof callback != 'function') {
throw '<?=gettext("No callback function for getURL"); ?>';
}
var http_request = null;
if (typeof XMLHttpRequest != 'undefined') {
http_request = new XMLHttpRequest();
} else if (typeof ActiveXObject != 'undefined') {
try {
http_request = new ActiveXObject('Msxml2.XMLHTTP');
} catch (e) {
try {
http_request = new ActiveXObject('Microsoft.XMLHTTP');
} catch (e) {}
}
}
if (!http_request) {
throw '<?=gettext("Both getURL and XMLHttpRequest are undefined"); ?>';
}
http_request.onreadystatechange = function() {
if (http_request.readyState == 4) {
callback( { success : true,
content : http_request.responseText,
contentType : http_request.getResponseHeader("Content-Type") } );
}
}
http_request.open('GET', url, true);
http_request.send(null);
}
}
var SVGDoc = null;
var last_cpu_total = 0;
var last_cpu_idle = 0;
var diff_cpu_total = 0;
var diff_cpu_idle = 0;
var cpu_data = new Array();
var max_num_points = <?=$nb_plot?>; // maximum number of plot data points
var step = <?=$width?> / max_num_points; // plot X division size
var scale = <?=$height?> / 100;
function init(evt) {
SVGDoc = evt.target.ownerDocument;
fetch_data();
}
function fetch_data() {
getURL('<?=$fetch_link?>', plot_cpu_data);
}
function plot_cpu_data(obj) {
if (!obj.success) {
return handle_error(); // getURL failed to get current CPU load data
}
var cpu = parseInt(obj.content);
if (!isNumber(cpu)) {
return handle_error();
}
switch (cpu_data.length) {
case 0:
SVGDoc.getElementById("collect_initial").setAttributeNS(null, 'visibility', 'visible');
cpu_data[0] = cpu;
fetch_data();
return;
case 1:
SVGDoc.getElementById("collect_initial").setAttributeNS(null, 'visibility', 'hidden');
break;
case max_num_points:
// shift plot to left if the maximum number of plot points has been reached
var i = 0;
while (i < max_num_points) {
cpu_data[i] = cpu_data[++i];
}
--cpu_data.length;
}
cpu_data[cpu_data.length] = cpu;
var path_data = "M 0 " + (<?=$height?> - (cpu_data[0] * scale));
for (var i = 1; i < cpu_data.length; ++i) {
var x = step * i;
var y_cpu = <?=$height?> - (cpu_data[i] * scale);
path_data += " L" + x + " " + y_cpu;
}
SVGDoc.getElementById("error").setAttributeNS(null, 'visibility', 'hidden');
SVGDoc.getElementById('graph_cpu_txt').firstChild.data = cpu + '%';
SVGDoc.getElementById('graph_cpu').setAttributeNS(null, "d", path_data);
fetch_data();
}
function handle_error() {
SVGDoc.getElementById("error").setAttributeNS(null, 'visibility', 'visible');
fetch_data();
}
function isNumber(a) {
return typeof a == 'number' && isFinite(a);
}
]]>
</script>
</svg>
|
