Towards Self-healing Service Compositions

Service-oriented architectures are emerging as a solution to integrate components in unstable and evolving contexts. The discovery phase supports flexible and dynamic component bindings. Bindings can occur either at deployment time or at run-time. Because of dynamicity, however, bindings can fail. The paper identifies and classifies the main faults of service-oriented systems and sketches some solutions to make compositions self-healing. We propose service compositions to be reorganized in such a way that they can be suitably monitored and reorganized according to changing contexts. Proposed solutions are exemplified on a simple case study.