A Model-based Design Environment for Executing Self-* Software Components

This paper describes mocas (Model Of Components for Adaptive Systems), a component model which relies on a model execution environment to create software components with self-* cabilities. A mocas component has its structure constrained by a uml profile and its behavior specified with a uml state machine. The state machine is embedded into the component at runtime and executed by an engine. The component is installed in a container to become adaptive and is endowed with a control loop to self-adapt. mocas relies on three different tools which covers the life cycle of a mocas system: a plug-in for the eclipse-based topcased platform in order to model mocas components and to generate java code; an engine, which runs on the top of the eclipse modeling framework (emf), for executing uml state machines; an administration platform for managing mocas components. We illustrate our approach by designing a self-adaptive gearbox supporting self-configuration and self-healing.