A Declarative Approach for QoS-Aware Web Service Compositions

Authors:
Fabien Baligand;Nicolas Rivierre;Thomas Ledoux
Affiliations:
France Telecom - R&D / MAPS / AMS, 38-40 rue du general Leclerc, 92794 Issy les Moulineaux, France and OBASCO Group, EMN / INRIA, Lina, Ecole des Mines de Nantes, 4, rue Alfred Kastler, F - 44307 ...;France Telecom - R&D / MAPS / AMS, 38-40 rue du general Leclerc, 92794 Issy les Moulineaux, France;OBASCO Group, EMN / INRIA, Lina, Ecole des Mines de Nantes, 4, rue Alfred Kastler, F - 44307 Nantes cedex 3, France
Venue:
ICSOC '07 Proceedings of the 5th international conference on Service-Oriented Computing
Year:
2007

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Abstract

While BPEL language has emerged to allow the specification of Web Service compositions from a functional point of view, it is still left to the architects to find proper means to handle the Quality of Service (QoS) concerns of their compositions. Typically, they use ad-hoc technical solutions, at the message level, that significantly reduce flexibility and require costly developments. In this paper, we propose a policy-based language aiming to provide expressivity for QoS behavioural logic specification in Web Service orchestrations, as well as a non-intrusive platform in charge of its execution both at pre-deployment time and at runtime.