Golang exercises

I'm trying to sharpen my Golang knowledge for $WORK. To do so, I've been building small one-off projects whenever I get a few hours free time. I'm also taking a lot of assistance from ChatGPT.

SAML metadata parser

I was struggling with coming up with a good exercise when this idea occurred to me. One of the goals was to get myself familiar with writing tests in Go. This turned out to be the perfect exercise for that. I also got to play with https://github.com/beevik/etree library for this. I'm sure simpler XMLs can be directly parsed using the built in encoding package as well.

Later down the line, I got curious about how the module system works and how packages are published in the open. So I decided to make this into a published library.

This also uses a github action to build and run tests when changes are merged to the main branch. Of course, this is not a very useful library. It's only an experiment.

Websocket server

The idea behind this was to get myself comfortable with channels. The goal is very simple: use go channels and websocket to continuously update something on the browser.

Initial version has a websocket handler that wrote the current time every second to the client. I started replaced that with currently available RAM using gopsutil.

The package is here.