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Descripción
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| Abstract. Service compositions put together loosely-coupled component ser-vices to perform more complex, higher level, or cross-organizational tasks in a platform-independent manner. Quality-of-Service (QoS) properties, such as execution time, availability, or cost, are critical for their usability, and permissible boundaries for their values are defined in Service Level Agreements (SLAs). We propose a method whereby constraints that model SLA conformance and violation are derived at any given point of the execution of a service composition. These constraints are generated using the structure of the composition and properties of the component services, which can be either known or empirically measured. Violation of these constraints means that the corresponding scenario is unfeasible, while satisfaction gives values for the constrained variables (start / end times for activities, or number of loop iterations) which make the scenario possible. These results can be used to perform optimized service matching or trigger preventive adaptation or healing. | |
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Internacional
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Si |
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Nombre congreso
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Service-Oriented Computing - ICSOC 2011 |
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Tipo de participación
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960 |
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Lugar del congreso
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Paphos, Chipre |
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Revisores
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Si |
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ISBN o ISSN
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978-3-642-25534-2 |
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DOI
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10.1007/978-3-642-25535-9_5 |
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Fecha inicio congreso
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05/12/2011 |
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Fecha fin congreso
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08/12/2011 |
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Desde la página
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62 |
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Hasta la página
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76 |
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Título de las actas
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Service-Oriented Computing - 9th International Conference, ICSOC 2011, Paphos, Cyprus, December 5-8, 2011 Proceedings |