first pass at synchronous backend

examples/rrdContent.js

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+/*
+ Example HTML/javascript file that display the
+ content of a RRD archive file
+ Part of the javascriptRRD package
+ Copyright (c) 2009 Frank Wuerthwein, fkw@ucsd.edu
+
+ Original repository: http://javascriptrrd.sourceforge.net/
+ 
+ MIT License [http://www.opensource.org/licenses/mit-license.php]
+*/
+
+/*
+ This example will print out RRD content in integer format.
+ Make sure all RRD values can fit in an integer
+*/
+var bf = require('../lib/binaryFile.js')
+var rrf = require('../lib/rrdFile.js')
+
+console.log('RRD Raw Content')
+var fname = 'example1.rrd'
+
+bf.FetchBinaryURLAsync(fname, function(binfile){
+  var rrd_data = new rrf.RRDFile(binfile)
+  var nrDSs=rrd_data.getNrDSs()
+
+  for (var i=0; i<nrDSs; i++) {
+    var ds=rrd_data.getDS(i)
+    var rra=rrd_data.getRRA(i)
+    console.log(ds.getName())
+    for(var j=0; j<rra.getNrRows(); j++) {
+      console.log(Math.round(rra.getElFast(j, i)))
+    }
+  }
+})