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An Online Monitoring Approach for Web Service Requirements

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7 Author(s)
Qianxiang Wang ; Sch. of Electron. Eng. & Comput. Sci., Peking Univ., Beijing, China ; Jin Shao ; Fang Deng ; Yonggang Liu
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Web service technology aims to enable the interoperation of heterogeneous systems and the reuse of distributed functions in an unprecedented scale and has achieved significant success. There are still, however, challenges to realize its full potential. One of these challenges is to ensure the behavior of Web services consistent with their requirements. Monitoring events that are relevant to Web service requirements is, thus, an important technique. This paper introduces an online monitoring approach for Web service requirements. It includes a pattern-based specification of service constraints that correspond to service requirements, and a monitoring model that covers five kinds of system events relevant to client request, service response, application, resource, and management, and a monitoring framework in which different probes and agents collect events and data that are sensitive to requirements. The framework analyzes the collected information against the prespecified constraints, so as to evaluate the behavior and use of Web services. The prototype implementation and experiments with a case study shows that our approach is effective and flexible, and the monitoring cost is affordable.

Published in:

Services Computing, IEEE Transactions on  (Volume:2 ,  Issue: 4 )

Date of Publication:

Oct.-Dec. 2009

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