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Using Architectural Style as a Basis for Self-repair

Shang-Wen Cheng, David Garlan, Bradley Schmerl, João Sousa, Bridget Spitznagel and Peter Steenkiste.

In Jan Bosch, Morven Gentleman, Christine Hofmeister and Juha Kuusela editors, Software Architecture: System Design, Development, and Maintenance (Proceedings of the 3rd Working IEEE/IFIP Conference on Software Architecture), Pages 45-59, Kluwer Academic Publishers, 25-31 August 2002.

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An increasingly important requirement for software systems is the capability to adapt at run time in order to accommodate varying resources, system errors, and changing requirements. For such self-repairing systems, one of the hard problems is determining when a change is needed, and knowing what kind of adaptation is required. Recently several researchers have explored the possibility of using architectural models as a basis for run time monitoring, error detection, and repair. Each of these efforts, however, has demonstrated the feasibility of using architectural models in the context of a specific style. In this paper we show how to generalize these solutions by making architectural style a parameter in the monitoring/repair framework and its supporting infrastructure. The value of this generalization is that it allows one to tailor monitoring/ repair mechanisms to match both the properties of interest (such as performance or security), and the available operators for run time adaptation.

Keywords: Architectural Analysis, Autonomic Systems, Self-Repair, Software Architecture.  
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