YAML As Architecture (YAAA)
Domain-specific language (DSL) for ADAS / AD systems
YAAA (YAML As Architecture) is a grammar and meta model for the entities and relationships in the ETAS DMS meta model.
YAAA is designed to model systems in the automated driving (AD) as well as driver assistance (DA) domain. It supports the decomposition of complex systems into sub components and describes all relevant details, from software components, to code geneneration and target deployment utilizing a middleware.
The main aspects for YAAA modelling are:
- Functional components: the building blocks of the AD application to describe the function behavior. Available components are e.g. Gateways, Runnables, Activities, Partitions, Operating System, SoCs
- Communication: The connections and interfaces between the functional components
- Deployment: Information on the distribution of the functional components to the hardware
YAAA: Modeling concepts and workflow
YAAA provides a set of YAML-based templates for modeling the software architecture of ADAS / AD systems. Learn more
Benefits of YAAA
- The language is designed to fit into modern Git-based software development workflows. This is achieved by capturing architecture desciption in plain text YAML files, resulting in an efficient architecture-as-code approach.
- The YAAA architecture desciption is based on YAML and hence is human and machine readable. This eases file diffs and as such enables an efficient software development workflow based on a version control system (e.g. Git).
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For YAAA, a similar pattern as in object oriented programming languages is applied: defining
types and instantiating them.
Each YAAA type definition lives in it's own .yaml file which allows for a great modularity of the system and allows for a clear separation of concerns and definition of code ownership.
Tools supporting YAAA
- The YAAA Code Generator (YAAAC) is a command line tool to generate all middleware related source code and configuration files which are required to build and deploy a YAAA application described by the YAAA model and the functional user code.
- YAAA-Vis is a web-based viewer providing interactive graphical views of the architecture model designed in YAAA.
- YAAA-Code is a Visual Studio Code extension that eases developing YAAA projects. It provides code completion, code suggestions and validations for YAAA files.
- YAAA-Vis Code is a Visual Studio Code extension that helps deveoping YAAA projects. It provides code completion suggestions and validations for YAAA models.
The YAAA development tools are part of the ETAS DMS SDK.