Run-Time Monitoring of Instances and Classes of Web Service Compositions

  • Authors:
  • Fabio Barbon;Paolo Traverso;Marco Pistore;Michele Trainotti

  • Affiliations:
  • ITC-IRST, Italy;ITC-IRST, Italy;DIT, University of Trento, Italy;DIT, University of Trento, Italy

  • Venue:
  • ICWS '06 Proceedings of the IEEE International Conference on Web Services
  • Year:
  • 2006

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Abstract

The run-time monitoring of web service compositions has been widely acknowledged as a significant and challenging problem. In this paper, we propose a novel solution to the problem of monitoring web services implemented in BPEL. We devise an architecture that clearly separates the business logic of a web service from its monitoring functionality. The architecture supports both "instance monitors" that deal with the execution of a single instance of BPEL process, as well as "class monitors" that report aggregated information about all the instances of a BPEL process. We also define a language for the specification of instance and class monitors. The language allows for specifying boolean, statistic, and time-related properties. Finally, we devise a technique for the automatic translation of all these kinds of monitors to Java programs.