地理空间信息网格中间件功能设计与组件模型

Functional Design and Component Model of Grid Middleware in Geospatial Information

中间件是地理空间信息网格的关键技术之一。研究的目的是为用户提供具有统一编程接口的虚拟机器,支持复杂应用问题的求解和广域网上各类资源的共享。设计地理空间信息网格中间件要具备资源动态监测、屏蔽节点异构、优化资源选择和协同计算等功能。地理空间信息网格中间件的组建模型包括:资源监测组件、计算服务组件、网格安全组件、容错服务组件、信息服务组件和应用调度组件。

The middleware is one of the important key technologies of the Geospatial Information Grid. The propose of the research is to provide the users with the virtual machines which have the same programming interface, and support to solve complex application problem and various resources sharing on lntemet. The grid middleware of geospatial information needs to be designed to have the functions such as resource dynamic monitor, heterogeneous node shield, optimizing the resource selection and working in coordination with calculations. The component model of grid middleware in geospatial information include resource-monitoring modules, calculation service modules, grid security modules, fault tolerance modules, information service modules and application dispatching modules.