Learning developing "SDT"

Sun, 22 May 2022

In the daily life of a developer it happens that some stupid tools are needed such as encoders / decoders, string generators of various kinds, etc ...
Many rely on the various online sites where you post your content and give you the elaborate answer.
From a security point of view, however, it is an operation that cannot be considered very beautiful, even if the functioning of these online tools is only on the client side (javascript).

This is why I started, somewhat as a challenge, trying to create a CLI that would generate a series of random bytes in base64, using GoLang and cobra.

As I developed this little CLI I came up with other features that I have implemented, or that I have noted at the time.

It was an excellent test bed for some aspects that I had never tried to implement or that I had never investigated.

I called the tool SDT: Smart Developer Tools and the repository is located here.

What have I learned?

  • Create a cli in golang using cobra 🐍 and create related unit tests
  • Manage parameters from files using viper
  • Input management from different sources (Stdin, file, command line arguments)
  • Management of different types of output
  • Use of Go 1.18 generics!
  • Multi-architecture build and release using goreleaser
  • Use of UPX for the compression of the generated binary files
  • Split architecture optimized code (wasm)
  • Creation of a web app based on WebAssembly
  • Use of Vite for the creation of web apps based on Lit
  • Using Fyne to create a desktop GUI (work in progess)
  • Deploy of hybrid application golang + typescript with Netlify (first demo here)

I hope that this tool becomes useful and does not remain just a test bed, I have already been able to use it successfully in daily work.

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