Akka-stream D3 activity visualizer

Tim Harper

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Jan 24, 2015, 4:03:01 PM1/24/15

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Recently I gave a presentation at a local technology group about reactive-streams. In order to demonstrate back-pressure, I whipped up this project which both visualizes the graph of a stream and shows the activity as it runs. I built it on Spray (ironically) because I didn't know if a web-sockets implementation existed already for akka-http. In the front-end, I'm using Dagre (a directed graph renderer) & D3 for visualization, along with some coffee script code. I know bonus points would've been awarded for scala-js usage.

Anyway, if interested, find the code here:

https://github.com/timcharper/reactive-viz

Instructions are in the README.

The impatient can just watch the following video to get an idea of what it does:

http://screencast.com/t/0q0sIGxC4

Konrad Malawski

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Jan 24, 2015, 4:26:22 PM1/24/15

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This is really awesome, kudos Tim!

Hoping to get to play around with it a bit more soon.

Answering some in-lined questions you mention:

* We do not yet have websockets in akka-http, but they are on the roadmap :-)

* I think the lack of scala.js can be excused in this case, awesome execution!

--

Konrad 'ktoso’ Malawski
Akka @ Typesafe

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Roland Kuhn

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Jan 24, 2015, 4:35:00 PM1/24/15

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Wow that looks awesome, thanks for sharing!

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Dr. Roland Kuhn
Akka Tech Lead
Typesafe – Reactive apps on the JVM.
twitter: @rolandkuhn

Homer Quan

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Apr 14, 2015, 3:18:07 AM4/14/15

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I just have a idea to create something like this and googled this...

Good job!

Magnus Andersson

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Apr 18, 2015, 7:22:03 PM4/18/15

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Cool! A tool that would allow to instrument arbitrary flows or actor systems and then visualize them for monitoring during dev, test or even in production would be very attractive!