An ontological architecture for principled and automated system of systems composition (original) (raw)
2020, Proceedings of the IEEE/ACM 15th International Symposium on Software Engineering for Adaptive and Self-Managing Systems
A distributed system's functionality must continuously evolve, especially when environmental context changes. Such required evolution imposes unbearable complexity on system development. An alternative is to make systems able to self-adapt by opportunistically composing at runtime to generate systems of systems (SoSs) that offer value-added functionality. The success of such an approach calls for abstracting the heterogeneity of systems and enabling the programmatic construction of SoSs with minimal developer intervention. We propose a general ontology-based approach to describe distributed systems, seeking to achieve abstraction and enable runtime reasoning between systems. We also propose an architecture for systems that utilize such ontologies to enable systems to discover and 'understand' each other, and potentially compose, all at runtime. We detail features of the ontology and the architecture through two contrasting case studies: one on controlling multiple systems in smart home environment, and another on the management of dynamic computing clusters. We also quantitatively evaluate the scalability and validity of our approach through experiments and simulations. Our approach enables system developers to focus on high-level SoS composition without being constrained by deployment-specific implementation details. CCS CONCEPTS • Computer systems organization → Architectures; • Computer systems organization Self-organizing autonomic computing; KEYWORDS
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