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A Language for Quality of Service Requirements Specification in Web Services Orchestrations

  • Fabien Baligand
  • Didier Le Botlan
  • Thomas Ledoux
  • Pierre Combes
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4652)

Abstract

Service Oriented Architectures industry aims to deliver agile service infrastructures. In this context, solutions to specify service compositions (mostly BPEL language) and Quality of Service (QoS) of individual services have emerged. However, architects still lack adapted means to specify and implement QoS in service compositions. Typically, they use ad-hoc technical solutions that significantly reduce flexibility and require cost-effective development. Our approach aims to overcome this shortcoming by introducing both a new language and tool for QoS specification and implementation in service compositions. More specifically, our language is a declarative domain-specific language that allows the architect to specify QoS constraints and mechanisms in Web Service orchestrations. Our tool is responsible for the QoS constraints processing and for QoS mechanisms injection into the orchestration. A key property of our approach is to preserve compatibility with existing languages and standards. In this paper, we present our language and tool, as well as an illustrative scenario dealing with multiple QoS concerns.

Keywords

Service Composition Service Level Agreement Composite Service Service Level Agreement Violation Grapher Service 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Fabien Baligand
    • 1
  • Didier Le Botlan
    • 2
  • Thomas Ledoux
    • 2
  • Pierre Combes
    • 1
  1. 1.France Telecom - R&D / MAPS / AMS, 38-40 rue du general Leclerc, 92794 Issy les MoulineauxFrance
  2. 2.OBASCO Group, EMN / INRIA, Lina, Ecole des Mines de Nantes, 4, rue Alfred Kastler, F - 44307 Nantes cedex 3France

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