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QoS-Aware Web Service Compositions Using Non-intrusive Policy Attachment to BPEL

  • Anis Charfi
  • Rania Khalaf
  • Nirmal Mukhi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4749)

Abstract

Supporting Quality of Service properties in BPEL processes is essential to enable Web Service based production workflows. In fact, when implementing a Web Service composition with a BPEL process, appropriate means are needed to express and enforce various QoS properties such as security, reliable messaging, and transactions.

In this paper, we present a generic and non-proprietary approach to express QoS properties in BPEL processes using policies. This approach uses XPath, WS-Policy, and the external policy attachment mechanism of WS-PolicyAttachment to enable a separate and non-intrusive specification of both the messaging-level and process-level QoS requirements in BPEL processes. We also present a prototype implementation on top of the Colombo BPEL engine, which supports the enforcement of policies that are attached to BPEL activities.

Keywords

Messaging Activity XPath Expression BPEL Process Reliable Messaging Partner Link 
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

  • Anis Charfi
    • 1
  • Rania Khalaf
    • 2
  • Nirmal Mukhi
    • 2
  1. 1.SAP Research CEC Darmstadt, DarmstadtGermany
  2. 2.IBM TJ Watson Research Center, Hawthorne, New YorkUSA

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