Using Other Data Sources for cubism.js
Cubism takes care of initialization and update for you: the initial request is the full visible window (start to stop, typically 1,440 data points), while subsequent requests are only for a few most recent metrics (7 data points).
Take a look at context.metric for how to implement a new data source. The simplest possible implementation is like this:
var foo = context.metric(function(start, stop, step, callback) { d3.json("/data", function(data) { if (!data) return callback(new Error("unable to load data")); callback(null, data); });});You would extend this to change the "/data" URL as appropriate, passing in the start, stop and step times, and whatever else you want to use to identify a metric. For example, both Cube and Graphite use a metric expression as an additional query parameter.