Question: How do you create a push-based metric source?

[eric]

Do you have an example of how to create a metric source that receives it's datapoints from a websocket?

[mbostock]

No examples yet, but I have been thinking about about a streaming metrics API for Cube. To implement it, the metric needs to cache the current window internally, so that it can callback immediately on request with whatever's available. So it's not too dissimilar from the random walk example on the website. On the other hand if the new metric arrives via push after the context "beforechange" event is dispatched, then the metric might need to wait for the new data to arrive.

[mbostock]

Closing this because it's neither a defect or a feature request. Please followup on Stack Overflow if you have more questions. Thanks!

[caub]

I'd actually be very interested in such a feature, since I've already a 'pubsub'-like push server for getting data

[cuadue]

Not sure if there's any interest left floating around, but here's a little demo I've whipped up.

https://gist.github.com/cuadue/6427101