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On Fault Tolerance Reuse during Refinement

Lookup NU author(s): Dr Ilya Lopatkin, Dr Alexei Iliasov, Professor Alexander Romanovsky

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Abstract

Complex modern applications have to be developed to be dependable to meet their requirements and the expectations of their users. An important part of this is their ability to deal with various threats (such as faults in the system environment, operator's mistakes, underlying hardware and software support problems). Development of modern applications is complicated by the need for systematic and rigorous integration of fault tolerance measures. The paper focuses on reuse of fault tolerance modelling. First, it introduces the idea of general modelling templates, reflecting abstract views on system behaviour with respect to faults. These templates are used during system detalisation (refinement) to capture the user's view on system external behaviour. Secondly, it proposes to use a library of concrete modelling patterns allowing the developers to systematically integrate specific fault tolerance mechanisms (e.g. recovery blocks, checkpoints, exception handling) into the models. The proposed solutions are linked to the Event-B method and demonstrated using a case study.


Publication metadata

Author(s): Lopatkin I, Iliasov A, Romanovsky A

Publication type: Report

Series Title: School of Computing Science Technical Report Series

Year: 2010

Pages: 13

Source Publication Date: February 2010

Report Number: 1188

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/1188.pdf


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