Dynamic event subscriptions in distributed event based architectures
Expert Systems with Applications: An International Journal
RPC automation: making legacy code relevant
Proceedings of the 8th International Symposium on Software Engineering for Adaptive and Self-Managing Systems
Requirements-driven software evolution
Computer Science - Research and Development
Uncertainty handling in goal-driven self-optimization - Limiting the negative effect on adaptation
Journal of Systems and Software
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Service compositions need to continuously self- adapt to cope with unexpected failures. In this context adaptation becomes a fundamental requirement that must be elicited along with the other functional and non functional requirements. Beside modelling, effective adaptation also demands means to trigger it at runtime as soon as the actual behavior of the composition deviates from stated requirements. This paper extends traditional goal models with adaptive goals to support continuous adaptation. Goals become live, runtime entities whose satisfaction level is dynamically updated. Furthermore, boundary infringement triggers adaptation capabilities. The paper also provides a methodology to trace goals onto the underlying composition, assess goals satisfaction at runtime, and activate adaptation consequently. All the key elements are demonstrated on the definition of the process to control an advanced washing machine.