Coding Conventions and Guidelines

Here you find an overview of our conventions on coding and version control.



We use Black with default settings, enforced by Flake8.

We use the default settings, except for a maximal line-length of 99 characters. If you are using a Black IDE integration, think about adapting its settings.

For code documentation we use the Flake8 Docstrings extension with Google-style formatting enabled (docstring-convention=google).

ECMAScript and TypeScript

We use ESLint as the common Linter. When your code is based on VueJS or Svelte, install the official IDE extensions. These extensions provide additional style checks and auto-formatting options.


We utilize an API-first approach. APIs are specified using OpenAPI 3. Find the API at

All the main aspects are documented within the spec. In some cases you may need some additional documentation in the docs. For example the API: Schedules and conflict resolution document can be found in “Developer Guide -> Misc”.


At the moment only Engine API is based on API-first. Steering API and Tank API are momentarily generated out of the code base.


The general documentation is located in meta/docs and hosted at When working on any component, also check if this documentation has to be updated or extended.

Developer Installation

For Development the native installation as outlined in the README of individual repositories recommended.

Docker Compose Deployments

For production we highly recommend to run AURA using Docker and Docker Compose as outlined in the Administration Guide. But also as a developer you can benefit from the ease of an Docker Compose installation. For example when developing some Engine feature, you may want to run AURA Web with Docker Compose while testing.

Prepare your Development Environment

It is recommended to clone all projects for example in such folder structure:


Order of configuration

After that, you need to configure the projects in following order:

Web Projects

  1. Steering - Administration interface for schedules and programme information.

  2. Dashboard - Frontend to manage schedules, program info and audio files.

  3. Tank - Upload, pre-processing and storage of the audio files.

Play-out Projects

  1. Engine Core - Playout-engine to deliver the actual radio to the audience.

  2. Engine API - API Server to provide playlogs and information for the studio clock.

  3. Engine - Scheduling and remote control for the playout-engine.

Configuring the OpenID Clients

Dashboard and Tank authenticate against Steering using OpenID. We use OpenID Connect (OIDC) to implement OpenID.

Check out the OIDC configuration page, on how to get them talk to each other.

Component Documentation

For more detailed documentation read the README files in the individual repositories.

You get an overview of all repositories at