企业云服务体系结构的参考模型与开发方法

Reference Model and Development Methodology for Enterprise Cloud Service Architecture

服务与云计算范型的融合有助于大规模分布式软件的开发和应用,同时也为面向服务的软件工程带来了新的挑战。云计算的最大挑战是缺少事实上的标准或单一的体系结构方法,以满足企业将关键产品作为Internet上的云服务发布的应用需求。首先,针对企业云计算的业务特点,提出了一种企业云服务体系结构(Enterprise Cloud Service Architecture,ECSA)风格的通用和抽象参考模型,分析了该模型中的云服务、服务模式、服务消费者、管理、流程、质量属性、服务构件模型、服务匹配和交互模式匹配9个组件及其之间的关系,并讨论了它们中的角色。然后,提出了一个四阶段的ECSA迭代改进过程,该过程把云服务视为首要的类建模元素,通过解除云服务模型和来自目标构件配置之间的耦合,可实现相同云服务集的多种不同体系结构。最后,给出了一种基于该模型的期货程序化交易的私有云服务应用实例,用以展示该方法的可行性和有效性。

Service-oriented software engineering with the fusion of the services and cloud computing paradigms not only offers many advantages for large-scale distributed software development and applications,but also brings new challenges.The biggest challenge in cloud computing is the lack of a de facto standard or single architectural design method,which can meet the requirements of an enterprise cloud approach to help deliver software as a service over the Internet.First,according to the business cha-racteristics of enterprise cloud computing,a generic and abstract model for Enterprise Cloud Service Architecture(ECSA) is proposed.The model consists of nine components,including the cloud services,service mode,service consumers,management,processes,quality attributes,service matching and interactive matching.The model components and their relationships are analysed,and their roles are discussed.Then,a four-phase software architecture improvement process that considers cloud services as the first class modeling elements is also presented.By decoupling the cloud service mode from their implementation on target component configurations,the process supports exploration of multiple architectures utilizing the same set of services.Finally,the application instance of ECSA is introduced,which hopes to provide recommendations and reference for enterprise cloud service system development and application integration.