[LibreQoS] Integration system, aka fun with graph theory

[Dave Taht]

Not necessarily useful in this context, but one of my all time
favorite graphing tools was the gource animations for commit logs and
developer interest. You think that's kind of a boring subject, yes?
Well, play one of these animations back...

https://gource.io/

I've always kind of wanted to see a network evolve over time, in much
the same way.



On Thu, Oct 27, 2022 at 2:33 PM Herbert Wolverson via LibreQoS
<libreqos at lists.bufferbloat.net> wrote:
>
> So I've been doing some work on getting UISP integration (and integrations in general) to work a bit more smoothly.
>
> I started by implementing a graph structure that mirrors both the networks and sites system. It's not done yet, but the basics are coming together nicely. You can see my progress so far at: https://github.com/thebracket/LibreQoS/tree/integration-common-graph
>
> Our UISP instance is a great testcase for torturing the system. I even found a case of UISP somehow auto-generating a circular portion of the tree. We have:
>
> Non Ubiquiti devices as "other devices"
> Sections that need shaping by subnet (e.g. "all of 192.168.1.0/24 shared 100 mbit")
> Bridge mode devices using Option 82 to always allocate the same IP, with a "service IP" entry
> Various bits of infrastructure mapped
> Sites that go to client sites, which go to other client sites
>
> In other words, over the years we've unleashed a bit of a monster. Cleaning it up is a useful talk, but I wanted the integration to be able to handle pathological cases like us!
>
> So I fed our network into the current graph generator, and used graphviz to spit out a directed graph:
>
> That doesn't include client sites! Legend:
>
> Green = the root site.
> Red = a site
> Blue = an access point
> Magenta = a client site that has children
>
> So the part in "common" is designed heavily to reduce repetition. When it's done, you should be able to feed in sites, APs, clients, devices, etc. in a pretty flexible manner. Given how much code is shared between the UISP and Splynx integration code, I'm pretty sure both will be cut to a tiny fraction of the total code. :-)
>
> I can't post the full tree, it's full of client names.
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-- 
This song goes out to all the folk that thought Stadia would work:
https://www.linkedin.com/posts/dtaht_the-mushroom-song-activity-6981366665607352320-FXtz
Dave Täht CEO, TekLibre, LLC