Monitoring requirements-based method for runtime monitoring of Web services

A Web service runtime monitoring method based on client's monitoring requirements is proposed, and a novel end-to-end monitoring prototype framework is also given. Firstly, WS-Policy is used to express client's various monitoring requirements. Then AOP (aspect oriented programming) monitoring logic is generated in order to capture important runtime information of the service. Finally, a special checking algorithm according to MREG (monitoring requirement expression graph) is utilized to get the monitoring results. The results indicate that WS-Policy can express client's monitoring requirements in a unified way. Simulated experiment on the travel reservation sample service shows that AOP monitoring logic derived from WS-Policy can carry out dynamic service monitoring effectively. The proposed method improves the efficiency of monitoring execution and decreases the side-effect on the original service system. The monitoring method is effective on both implementing the runtime monitoring smartly and improving the quality of the service.