摘要： 针对服务等级的监控提出了一种基于Wrapper的监控机制，该机制以WSRF下有状态的Web服务(WS-Resource)为基础，用Wrapper将服务提供方提供的服务进行包装再发布，从而在客户端访问这些包装过的服务接口时能够采集监控相关的信息，执行监控操作。采用Wrapper的最大优点是可以屏蔽不同服务提供方的异质性，简化监控系统的实现，甚至可以直接编译服务等级定义得到监控程序代码，并且通过将监控信息发布为资源，简化和管理第3方之间的合作。

关键词: 服务等级, 监控, WSRF

Abstract: This paper presents a Wrapper and WSRF based mechanism for CoS monitoring. In this mechanism, every component should follow the WSRF specification and every provider’s interface is wrapped to create a new interface through which management system can gather monitoring information and perform corresponding operations. This will make the variety of providers transparent to the monitoring system, hence the implementation of the monitoring system could be much easier. Also cooperation with third parties becomes very simple by taking monitor information as resources of WS-resource.

Key words: Class of service(CoS), Monitor, WSRF