Exception Handling in Context-Aware Agent Systems: A Case Study

Authors:
Nelio Cacho;Karla Damasceno;Alessandro Garcia;Alexander Romanovsky;Carlos Lucena
Affiliations:
Computing Department, Lancaster University, UK;Computer Science Department, Pontifical Catholic University of Rio de Janeiro, Brazil;Computing Department, Lancaster University, UK;Computer Science School, Newcastle University, UK;Computer Science Department, Pontifical Catholic University of Rio de Janeiro, Brazil
Venue:
Software Engineering for Multi-Agent Systems V
Year:
2007

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Abstract

Handling erroneous conditions in context-aware mobile agent systems is challenging due to their intrinsic characteristics: openness, lack of structuring, mobility, asynchrony and increased unpredictability. Even though several context-aware middleware systems now support the development of mobile agent-based applications, they rarely provide explicit and adequate features for context-aware exception handling. This paper reports our experience in implementing error handling strategies in some prototype context-aware collaborative applications built with the MoCA (Mobile Collaboration Architecture) system. MoCA is a publish-subscribe middleware supporting the development of collaborative mobile applications by providing explicit services that empower software agents with context-awareness. We propose a novel context-aware exception handling mechanism and discuss some lessons learned during its integration in the MoCA infrastructure.