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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<!--
Example HTML/javascript file that display the
content of two RRD archive files in a graph
using the Flot libraries
Part of the javascriptRRD package
Copyright (c) 2010 Igor Sfiligoi, isfiligoi@ucsd.edu
Frank Wuerthwein, fkw@ucsd.edu
Original repository: http://javascriptrrd.sourceforge.net/
MIT License [http://www.opensource.org/licenses/mit-license.php]
-->
<!--
This page requires Flot.
Repository: http://www.flotcharts.org/
[Previous repository: http://code.google.com/p/flot/]
-->
<html>
<script type="text/javascript" src="../lib/binaryXHR.js"></script>
<script type="text/javascript" src="../lib/rrdFile.js"></script>
<script type="text/javascript" src="../lib/rrdMultiFile.js"></script>
<!-- rrdFlot class needs the following four include files !-->
<script type="text/javascript" src="../lib/rrdFlotSupport.js"></script>
<script type="text/javascript" src="../lib/rrdFlot.js"></script>
<script type="text/javascript" src="../../flot/jquery.js"></script>
<script type="text/javascript" src="../../flot/jquery.flot.js"></script>
<script type="text/javascript" src="../../flot/jquery.flot.selection.js"></script>
<script type="text/javascript" src="../../flot/jquery.flot.tooltip.js"></script>
<head>
<title>RRD Graphs with Flot</title>
</head>
<body>
<h1 id="title">RRD Graphs with Flot</h1>
RRD URL:
<input type="text" id="input_fname1" value="example4_s1.rrd"><br>
<input type="text" id="input_fname2" value="example4_s2.rrd"><br>
<button onclick="fname_update()">Update</button>
<hr>
<table id="infotable" border=1>
<tr><td colspan="21"><b>Javascript needed for this page to work</b></td></tr>
<tr><td><b>RRD file</b></td><td id="fname1" colspan="2">None</td><td id="fname2" colspan="3">None</td></tr>
</table>
<div id="mygraph"></div>
<script type="text/javascript">
// Remove the Javascript warning
document.getElementById("infotable").deleteRow(0);
// fname and rrd_data are the global variable used by all the functions below
fname1=document.getElementById("input_fname1").value;
rrd_data1=undefined;
fname2=document.getElementById("input_fname2").value;
rrd_data2=undefined;
// This function updates the Web Page with the data from the RRD archive header
// when a new file is selected
function update_fname() {
if ((rrd_data1==undefined) || (rrd_data2==undefined)) {
return; /* some data still missing */
}
rrd_data_sum=new RRDFileSum([rrd_data1,rrd_data2]);
// Finally, update the file name and enable the update button
document.getElementById("fname1").firstChild.data=fname1;
document.getElementById("fname2").firstChild.data=fname2;
var graph_opts={legend: { noColumns:4}};
var ds_graph_opts={'Oscilator':{ color: "#ff8000",
lines: { show: true, fill: true, fillColor:"#ffff80"} },
'Idle':{ label: 'IdleJobs', color: "#00c0c0",
lines: { show: true, fill: true} },
'Running':{color: "#000000",yaxis:2}};
// the rrdFlot object creates and handles the graph
var f=new rrdFlot("mygraph",rrd_data_sum,graph_opts,ds_graph_opts);
}
// This is the callback function that,
// given a binary file object,
// verifies that it is a valid RRD archive
// and performs the update of the Web page
function update_fname_handler1(bf) {
var i_rrd_data=undefined;
if (bf.getLength()<1) {
alert("File "+fname1+" is empty (possibly loading failed)!");
return 1;
}
try {
var i_rrd_data=new RRDFile(bf);
} catch(err) {
alert("File "+fname1+" is not a valid RRD archive!\n"+err);
}
if (i_rrd_data!=undefined) {
rrd_data1=i_rrd_data;
update_fname()
}
}
function update_fname_handler2(bf) {
var i_rrd_data=undefined;
if (bf.getLength()<1) {
alert("File "+fname2+" is empty (possibly loading failed)!");
return 1;
}
try {
var i_rrd_data=new RRDFile(bf);
} catch(err) {
alert("File "+fname2+" is not a valid RRD archive!\n"+err);
}
if (i_rrd_data!=undefined) {
rrd_data2=i_rrd_data;
update_fname()
}
}
// this function is invoked when the RRD file name changes
function fname_update() {
/* invalidate them, so we know when they are both loaded */
rrd_data1=undefined;
rrd_data2=undefined;
fname1=document.getElementById("input_fname1").value;
try {
FetchBinaryURLAsync(fname1,update_fname_handler1);
} catch (err) {
alert("Failed loading "+fname1+"\n"+err);
}
fname2=document.getElementById("input_fname2").value;
try {
FetchBinaryURLAsync(fname2,update_fname_handler2);
} catch (err) {
alert("Failed loading "+fname2+"\n"+err);
}
}
</script>
</body>
</html>
|
