Smart Event Models and Architectures

提案编号0203876标题：“智能事件模型和体系结构”哥伦比亚大学的Gail E.Kaiser这个项目研究广域发布/订阅事件系统模型和体系结构。重点介绍了智能事件和主动事件两种新模型，以及一种称为虚拟专用事件网络(VPEN)的事件总线体系结构。智能事件与一个结构类型模型(语法或模式)和一个语义模型相关联，该模型定义了对结构子组件执行的处理。智能事件通过基于内容的消息发送，其中订阅可以指定指示感兴趣的事件的复杂模式。活动事件将其语义模型直接作为移动代码包含在内。活动事件作为移动代理运行，(从概念上讲)依靠其自身的力量点对点地传输。智能事件可以可选地包括活动事件子结构，从而使基于内容的消息能够应用于活动事件的这一子集。VPEN将多协议标签交换(MPLS)协议和机制扩展到应用层，通过在发布者广告以及消费者订阅可用时预先规划标签交换路径来提高基于内容的路由的性能。VPEN还以虚拟专用网络(VPN)的方式增加了基于加密的安全性和保密性。

Proposal Number 0203876Title: "Smart Event Models and Architectures"Gail E. Kaiser, Columbia UniversityThis project investigates wide-area publish/subscribe event system models and architectures. The focus is on two new models called Smart Events and Active Events, and an event bus architecture called Virtual Private Event Networks (VPENs).Smart events are associated with a structural type model (a grammar or schema), and a semantic model that defines the processing to be performed on the structural subcomponents. Smart events are routed via content-based messaging, where subscriptions may specify complex patterns indicating the events of interest. Active events include their semantic model directly as mobile code. Active events operate asmobile agents transported (conceptually) under their own power point-to-point. Smart events may optionally include active event substructures, enabling content-based messaging to be applied to this subset of active events.VPENs extend multi-protocol label switching (MPLS) protocols and mechanisms to the application layer, to improve the performance of content-based routing by preplanning label switched paths when publisher advertisements as well as consumer subscriptions are available. VPENs also add encryption-based security and privacy in the style of virtual private networks (VPNs).