IoT data in JavaScript

Introduction

In my previous post Displaying real-time IoT data in IBM DOORS, I displayed IoT data in the DOORS Web Access hover over. This involved an investigation into how I would access IBM Foundation IoT data from JavaScript. My initial thoughts were this would be very easy, I will just use the Paho Js utility, though it didn't end up as straight forward as anticipated. Therefore the aim of this post is to make the process a little easier and highlight the gotchas I encountered.

Displaying real-time IoT data in IBM DOORS (Doors Web Access)

There are many ways in which we could imagine surfacing IoT data in the IBM DOORS interface.

One way that I would propose is to extend the rich hover so that you could see IoT data in real-time, displayed when you hover over an IBM DOORS link-end point. Imagine being an IBM RQM user looking at a defect and being able to hover over a link to a requirement and see the history of a thing displayed.

Extending the rich hover to display IoT data in IBM DOORS Web Access

Extending the rich hover to display IBM DOORS IoT data in IBM RQM

Showing display of real-time data in hover over

As part of the technical investigation I looked into the implementation of a JavaScript client which listens for data from a device in the IoT Foundation. And then display that real-time data in the UI. The functioning graphing component is shown in the examples above. I will blog about the JavaScript / IoT implementation in a future post.