balena-cdsl

balena cdsl

_{an open source :satellite: project by balena.io}

A configuration DSL.

Provides facilities to:

• transform configuration DSL into the JSON Schema & UI Object Schema with custom extensions
• parse configuration DSL

Current crate status is experimental. It's because the API is evolving, we're not fully using it yet and we will probably move the transformation functionality to another crate in the future. This crate will become a simple configuration DSL parser and nothing else.

Goal

balena-cdsl crate is one small piece of the balena.io configuration project. This project has no public / open specification yet, but we're working on it and it will be public once finished.

Supported platforms

This library is written in the Rust language and can be used:

• directly, as a Rust crate
• as an isomorphic NPM package (NodeJS & browser)

Documentation

• API documentation
• Changelog
• Maintainer documentation

Usage

Rust

Add as a dependency to your Cargo.toml:

[dependencies]
balena-cdsl = "0"

Evaluate simple JSON:

let input_schema: serde_yaml::Value = serde_yaml::from_str(
    include_str!("configuration.yml")).
    unwrap();

let (json_schema, ui_object) = Generator::with(input_schema)?.generate();

Javascript

Install via npm

npm install --save balena-cdsl

Generate simple JSON Schema & UI Object Schema:

const cdsl = require('balena-cdsl');

const initialValue = `
title: demo
version: 1
properties:
  - network:
      title: Network
      properties:
        - ssid:
            title: Network SSID
            type: string
            minLength: 1
            maxLength: 32
        - passphrase:
            title: Network Key
            type: password
            minLength: 8
`;

console.log(cdsl.generate_ui(initialValue));

An example of using this module in nodeJS is available in the examples/node folder:

cd examples/node
npm install
npm start

An example of using this module in the browser is available in the examples/browser folder:

cd examples/browser
npm install
npm start

Open localhost:8080 in your browser.

Support

If you're having any problem, please raise an issue on GitHub or contact us, and the balena.io team will be happy to help.

License

balena-cdsl is open source software, and may be redistributed under the terms specified in the license.