Integrating Stateful Services in Workflow

Long running business processes require composition of services for task accomplishment. BPEL provide a mechanism to model business workflow among collaborating Web Services distributed across organizations. For effective execution and consistent outcomes from such composite services in a loosely coupled environment, management of state, transaction, notification and execution monitoring are the key requirements. After the emergence of WS-RF, stateful Web services have become integral part of Grid environment. Grid supports execution monitoring, resource sharing, integration and management of large-scale applications. Such capabilities are the backbone for any large-scale enterprise applications. Process oriented workflow execution in a grid environment with the support to manage state, transaction and notification is a challenging issue. In this paper we have proposed architecture to achieve integration of stateful services for a grid workflow. Development of stateful services is based on WS-RF specification to build services to support state management, transaction, notification and execution monitoring of a business process in a large-scale grid environment.