The challenging nature of error handling constantly escalates as a growing number of environments consists of networked devices and software components. In these environments, errors cover a uniquely large spectrum of situations related to each layer ranging from hardware to distributed platforms, to software components. Handling errors becomes a daunting task for programmers, whose outcome is unpredictable. Scaling up error handling requires to raise the level of abstraction beyond the code level and the try-catch construct, approaching error handling at the software architecture level.We propose a novel approach that relies on an Architecture Description Language (ADL), which is extended with error-handling declarations. To further raise the level of abstraction, our approach revolves around a domain-specific architectural pattern commonly used in pervasive computing. Error handling is decomposed into components dedicated to platform-wide, error-recovery strategies. At the application level, descriptions of functional components include declarations dedicated to error handling.We have implemented a compiler for an ADL extended with error-handling declarations. It produces customized programming frameworks that drive and support the programming of error handling. Our approach has been validated with a variety of applications for building automation.
This poster presents a design language and a tool suite covering the development life-cycle of a Sense/Compute/Control (SCC) application. This language makes it possible to define the architecture of an application, following an architectural pattern commonly used in SCC applications. Our underlying methodology assigns roles to the stakeholders, providing separation of concerns. Our tool suite includes a compiler that takes design artifacts written in our language as input. The compiler generates customized support for subsequent development stages, namely implementation and test. In doing so, it ensures the conformance between the architecture and the code. Our tool suite also includes a simulator for testing SCC applications, without requiring code modification. Our methodology has been applied to a wide spectrum of areas, such as building automation, advanced telecommunications, and health-care.
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