Governing Web Services using Event-driven Monitoring

In this paper we discuss the use cases for monitoring of Web services for compliance with policies and service level agreements. In particular, the quality of service associated with Web service interactions and its monitoring rely on the proper use by both parties of related Web service protocols. This monitoring is best served by an event-centric model and an extensible scripting language, such as those in the event-driven test scripting language (eTSL). The paper illustrates how it can be used for such monitoring purposes. The eTSL is designed specifically for monitoring the compliance of XML-based protocols and messages. We also discuss its advantages over other approaches.