基于BPEL的网格工作流系统

BPEL-based grid workflow system

设计并实现了一个基于业务流程执行语言(business process execution language,BPEL)的网格工作流管理系统.针对满足网格环境中的特殊需求,如状态的交互、动态服务绑定、高吞吐量和可扩展性、界面友好的工作流定义工具等,分别提出了BPEL与Web服务资源框架(Web service resource framework,WSRF)整合方法、BPEL的简单集群架构和面向应用组件的工作流定义等.最后,给出了在中国教育科研网格公共支撑平台(ChinaGrid supporting platform,CGSP)中网格工作流系统的原型实现.实验结果表明,原型系统支持负载均衡是正确、可行和有效的.

The purpose of this paper is to design and implement a workflow management system based on BPEL in grid environment.The approach to integrating BPEL with WSRF,simple cluster model of BPEL engines and application component oriented workflow defining are put forward respectively to satisfy the specific requirements in Grid environment,such as stateful interactions,dynamic service binding,high throughput and scalability,friendly workflow defining and so on.At last,a prototype of workflow system implemented in ChinaGrid Supporting Platform(CGSP) is also given.The experiment result suggests that,the prototype of workflow system of this paper which supports load balancing is correct,feasible and valid.