Componentization of Fault Tolerance Software for Fine-Grain Adaptation

Abstract

The evolution of systems during operational lifetime is becoming a core assumption of the design. This is the case for resource constrained embedded systems. Such an evolution may be driven by environment or the execution context. The adequacy of the service delivery with respect to the current operational conditions depends on the ability to tune the software configuration accordingly. This is true for application services, but also for dependability services, in particular the fault tolerance software. This paper presents a design of fault tolerance software for its runtime adaptation. This design relies on a reflective framework and open component based software engineering (CBSE) techniques. We demonstrate in this paper the feasibility of adapting componentized fault tolerance at a meta-level of the application.