基于发布/订阅系统的事件服务体系结构

An Event Service Architecture Based on Publish /Subscribe System

网格环境下软硬设施的异构性、通信的异步性以及协同工作的特点使得基于事件的交互成为虚拟组织成员交互的自然抽象。适用于网格环境下的事件服务是发布/订阅系统。该文结合科学数据网格的特点,采用基于内容的发布/订阅系统实现事件服务。并且提出科学数据网格的事件服务体系结构,给出了系统框架及实现中的核心算法———路由算法和匹配算法。该方案已经应用于科学数据网格项目中,结果表明它能够很好地适用于数据网格环境中。

The heterogeneous,asynchronous and collaborative aspects of grid environment make event-based interaction become a nature abstraction of interaction among members of virtual organization.The event service that adapts to grid environment is publish/subscribe system.Combined with the characters of Science Data Grid,authors adopt content-based publish/subscribe system to implement event service.This paper provides an event service architecture in the Science Data Grid and describes the frame and the most important core algorithms ,routing algorithm and matching algorithm.This scenario has been applied in Science Data Grid and the result shows that it is appropriate for data grid.