diff options
| author | alisonjm <alisonjm> | 2011-04-07 21:42:56 +0000 |
|---|---|---|
| committer | alisonjm <alisonjm> | 2011-04-07 21:42:56 +0000 |
| commit | 7d709b4130bed175dba0821be44d91039cbde97c (patch) | |
| tree | 916d1a655f0e0ca25807b9329ecf3d8e8c9c960c | |
| parent | bbce65d227a4fba1e618c9a64bb2b27726be86c5 (diff) | |
Added examples of using RRDFilterOp to sum two or more DSs
| -rw-r--r-- | src/examples/rrdJFlotFilter.html | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/examples/rrdJFlotFilter.html b/src/examples/rrdJFlotFilter.html new file mode 100644 index 0000000..a7bffd7 --- /dev/null +++ b/src/examples/rrdJFlotFilter.html @@ -0,0 +1,175 @@ +<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> + <head> + <title>RRD Graphs with Flot</title> + </head> + + <body> + <h1 id="title">RRD Graphs with Flot, with Filter Operations</h1> + + RRD URL: + <input type="text" id="input_fname" value="example1.rrd" + onchange="fname_update()"> + <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); + } + + // Next three functions are for use in RRDFilterOp, + // which requires a list of functions, one for each DS + + //Do nothing to the DS + function DoNothing(ds) { + this.getName = function() {return ds;} + this.getDSNames = function() {return [ds];} + this.computeResult = function(val_list) {return val_list;} + } + + //Sum two DSs + function SumDS(ds1,ds2) { + this.getName = function() {return ds1+"+"+ds2;} + this.getDSNames = function() {return [ds1,ds2];} + this.computeResult = function(val_list) {return val_list[0]+val_list[1];} + } + + //Sums multiple DSs from a given list + function MultiSumDS(list) { + this.getName = function() {return "SumTotal";} + this.getDSNames = function() { + var i = 0; + var name_list=[]; + for(i=0;i<list.length;i++){ + name_list.push(list[i].getName()); + } + return name_list;} + this.computeResult = function(val_list) { + var val_sum=0; + var i=0; + for(i=0;i<val_list.length;i++){ + val_sum+=val_list[i]; + } + return val_sum; + } + } + + // 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; + + //If only one DS, cannot sum anything + if (rrd_data.getNrDSs()<2) { + alert("Not enough elements ("+rrd_data.getNrDSs()+") in RRD to sum!"); + } + + + var op_list = []; //list of operations + var DS_list = []; //list of DSs to sum in MultiSumDS + var i = 0; + + //create a new rrdlist, which contains all original elements + // (kept the same by DoNothing()) + // plus additional operated-on DSs from RRDFilterOp + for (i=0;i<rrd_data.getNrDSs();i++) { + op_list.push(new DoNothing(rrd_data.getDS(i).getName())); + DS_list.push(rrd_data.getDS(i)) + } + op_list.push(new MultiSumDS(DS_list)); + op_list.push(new SumDS(rrd_data.getDS(0).getName(),rrd_data.getDS(1).getName())); + + rrd_data = new RRDFilterOp(rrd_data,op_list); + + 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> |