Efficient online monitoring of web-service SLAs

Raimondi, Franco and Skene, James and Emmerich, Wolfgang (2008) Efficient online monitoring of web-service SLAs. In: Proceedings of the 16th ACM SIGSOFT International Symposium on Foundations of Software Engineering. Harrold, Jean and Murphy, Gail, eds. Association for Computing Machinery, pp. 170-180. ISBN 9781595939951


Official URL: http://dx.doi.org/10.1145/1453101.1453125


If an organization depends on the service quality provided by another organization it often enters into a bilateral service level agreement (SLA), which mitigates outsourcing risks by associating penalty payments with poor service quality. Once these agreements are entered into, it becomes necessary to monitor their conditions, which will commonly relate to timeliness, reliability and request throughput, at runtime. We show how these conditions can be translated into timed automata. Acceptance of a timed word by a timed automaton can be decided in quadratic time and because the timed automata can operate while messages are exchanged at runtime there is effectively only a linear run-time overhead. We present an implementation to derive on-line monitors for web services automatically from SLAs using an Eclipse plugin. We evaluate the efficiency and scalability of this approach using a large-scale case study in a service-oriented computational grid.

Item Type:Book Section
Research Areas:School of Science and Technology > Science & Technology
ID Code:5278
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Deposited On:29 Apr 2010 15:57
Last Modified:31 Jul 2014 14:37

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