【摘要】 为实现应用型服务网格资源的协同共享,提出了基于动态服务合成的应用型服务网格实现框架。该框架通过将网格内多个简单服务有效集成为复杂的服务,将分散孤立的资源连通成逻辑上的整体,使其协同为用户提供更丰富的服务和更好的服务质量。以动态服务合成为中心,按照从具体资源到用户请求自下而上的顺序,将动态服务合成框架划分为信息基础层、资源层、基本服务层、抽象服务层和任务层5个层次。通过对各层次子问题模型的逐个求解,实现底层资源协同共享。最后,给出了该框架在全国高校仪器设备和优质教育资源共享系统项目中的原型实例。更多还原

【Abstract】 In order to improve the network resource sharing and the collaboration in Practical Service Grid(PSG),the concept of Dynamic Service Composition(DSC) based framework was brought forward.By integrating simple services into one complicated service,the distributed autonomous resources could be regarded as one logical unit so that more services could be provided and Quality of Service(QoS) could also be improved.From the actual resources level to user requests level,the DSC framework was partitioned into five layers: information infrastructure layer,resource layer,basic-service layer,abstract-service layer and task layer.Each layer presented a set of implementation issues.By resolving these issues,resources collaboration could be achieved.Finally,an application example based on the DSC framework,China Equipments and Education Resource Sharing System was given.更多还原