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Formal development of cooperative exception handling for mobile agent systems

Lookup NU author(s): Dr Elena Troubitsyna, Dr Alexei Iliasov, Professor Alexander Romanovsky

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Abstract

Mobile agent systems often require sophisticated cooperation and coordination during error detection and recovery. In this paper we propose novel fault tolerance mechanisms that support co-operative exception handling in such systems. The paper demonstrates how mechanisms like these can be formally developed and analysed. We start with identifying the typical modes of failures in agents and analysing possible failure and recovery scenarios in mobile systems. Stepwise refinement is used as our formal framework for top-down development and verification. Using the framework we formally verify the essential model properties, such as interoperability, local and global state consistency and termination of error recovery. Our approach provides developers with formal generic patterns for incorporating fault- tolerance mechanisms into mobile agent systems. We also demonstrate how the results of our formal development can be instantiated and reused in developing real-world agent software.


Publication metadata

Author(s): Laibinis L, Troubitsyna E, Iliasov A, Romanovsky A

Publication type: Report

Publication status: Published

Series Title: School of Computing Science Technical Report Series

Year: 2008

Pages: 13

Print publication date: 01/10/2008

Source Publication Date: October 2008

Report Number: 1123

Institution: School of Computing Science, University of Newcastle upon Tyne

Place Published: Newcastle upon Tyne

URL: http://www.cs.ncl.ac.uk/publications/trs/papers/1123.pdf


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