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<DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<!--
Example HTML/javascript file that display the
content of a RRD archive file in a graph
using the Flot libraries. This page adds two examples
to RRDJFlot.html of using RRDFilterOp to apply operations
(here, summing) to several or all of the DS in the RRD.
Part of the javascriptRRD package
Copyright (c) 2010 Frank Wuerthwein, fkw@ucsd.edu
Igor Sfiligoi, isfiligoi@ucsd.edu
Original repository: http://javascriptrrd.sourceforge.net/
MIT License [http://www.opensource.org/licenses/mit-license.php]
-->
<!--
This page requires Flot.
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>
<!-- 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="../lib/rrdFile.js"></script>
<script type="text/javascript" src="../lib/rrdFilter.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, with RRA Filter Operations</h1>
RRD URL:
<input type="text" id="input_fname" value="example3.rrd"
onchange="fname_update()">
<p>
<tr>
<th>Timezone</th>
<td valign="middle">
<select id="timezone">
<option value="3">+3 Moscow</option>
<option value="2">+2 East Eur</option>
<option value="1">+1 West Eur</option>
<option value="0" selected=true> 0 GMT</option>
<option value="-5">-5 East Coast</option>
<option value="-6">-6 Central</option>
<option value="-7">-7 Mountain</option>
<option value="-8">-8 Pacific</option>
</select>
</td>
</tr>
<p>
<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="fname" colspan="5">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
fname=document.getElementById("input_fname").value;
rrd_data=undefined;
// This function updates the Web Page with the data from the RRD archive header
// when a new file is selected
function update_fname() {
// Finally, update the file name and enable the update button
document.getElementById("fname").firstChild.data=fname;
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,graph_opts,ds_graph_opts);
}
//RRA Filter - leaves RRA alone.
function RRADoNothing(rra_idx) {
this.getIdx = function() {return rra_idx;}
this.getStep = function() {return null;}
}
/* RRA Filter - Creates a new RRA with a different step size (in seconds)
/ based on another RRA, whose data the new RRA averages.
/ rra_idx should be index of RRA with largest step size that doesn't exceed new step size.
*/
function RRA_Avg(rra_idx,new_step_in_seconds) {
this.getIdx = function() {return rra_idx;}
this.getStep = function() {return new_step_in_seconds;}
}
// 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_handler(bf) {
var i_rrd_data=undefined;
try {
var i_rrd_data=new RRDFile(bf);
} catch(err) {
alert("File "+fname+" is not a valid RRD archive!");
}
if (i_rrd_data!=undefined) {
rrd_data=i_rrd_data;
//Add RRA filters for longer averaged-out RRAs
//This pages was made to run example3.rra, with RRA steps of
//5 mins (300 seconds), 45 mins (2700s) and 8 hours (28800s).
var rra_op_list = [];
//Want to keep regular RRAs, so apply 'DoNothing" filters and push onto operator list.
//I will keep the RRAs in order by step size.
rra_op_list.push(new RRADoNothing(0)); //0th RRA, 5 min step.
//Now, we want to add a few new Averaging filters, kept in order.
//It's best to use the RRA with the next smallest step size as a basis.
//It's also best to make steps integer multiples of the original RRA step sizes.
//For istance, using a 45 minute step, a 6 hour (= 45mins x 8) step
// would be better than 4 hour step (=45 mins x 5.33...)
rra_op_list.push(new RRA_Avg(0,1800)); //30 minutes (based on 5 minutes)
rra_op_list.push(new RRADoNothing(1)); //Original 45 minutes
rra_op_list.push(new RRA_Avg(1,21600)); //6 hours (based on 45 mins)
rra_op_list.push(new RRADoNothing(2)); //Original 8 hours
rra_op_list.push(new RRA_Avg(2,86400)); //24 hours. (based on 8 hours)
rra_op_list.push(new RRA_Avg(2,259200)); //3 days. (based on 8 hours)
rra_op_list.push(new RRA_Avg(2,604800)); //1 week. (based on 8 hours)
//Now, we apply those averaging filters.
rrd_data = new RRDRRAFilterAvg(rrd_data,rra_op_list); //Adds 2 extra RRAs (averaged)
//We also want to use a timezone button so people in other timezones can
//shift the graph to their local time. So we grab the timezone and plug it in to RRAFilterShift:
var timezone_selection = document.getElementById("timezone");
timezone_num = timezone_selection.options[timezone_selection.selectedIndex].value;
rrd_data = new RRAFilterShift(rrd_data, timezone_num, [0,1,2,3,4,5,6,7]); //8 RRAs total including averaged ones
update_fname()
}
}
// this function is invoked when the RRD file name changes
function fname_update() {
fname=document.getElementById("input_fname").value;
try {
FetchBinaryURLAsync(fname,update_fname_handler);
} catch (err) {
alert("Failed loading "+fname+"\n"+err);
}
}
</script>
</body>
</html>
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