An evolution management model for multi-level component-based software architectures

International audienceHandling evolution in component-based software archi- tectures is a non trivial task. Indeed, a series of changes ap- plied on software may alter its architecture leading to sev- eral inconsistencies. In turn, architecture inconsistencies lead to software erosion and shorten its lifetime. To avoid architectural inconsistencies and increase software reliabil- ity, architecture evolution must be handled at all steps of the software lifecycle. Moreover, changes must be treated as first class entities. In this paper, we propose an evolution management model that takes these criteria into account. The model is a support for our three-level Dedal architec- tural model. It captures and handles change at any of the Dedal abstraction levels: specification, implementation and deployment. It generates evolution plans using evolution rules proposed in previous work. The generation process is implemented using the ProB model checker and evaluated through three evolution scenarios of a Home Automation Software