Expert Systems with Applications: An International Journal
BPEL4Job: A Fault-Handling Design for Job Flow Management
ICSOC '07 Proceedings of the 5th international conference on Service-Oriented Computing
An Orchestration as a Service Infrastructure Using Grid Technologies and WS-BPEL
ICSOC-ServiceWave '09 Proceedings of the 7th International Joint Conference on Service-Oriented Computing
Secure workflow execution in grid environments
NTMS'09 Proceedings of the 3rd international conference on New technologies, mobility and security
Parallelizing XML data-streaming workflows via MapReduce
Journal of Computer and System Sciences
Pre-execution security policy assessment of remotely defined BPEL-based grid processes
TrustBus'07 Proceedings of the 4th international conference on Trust, Privacy and Security in Digital Business
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Workflow has been considered as a crucial component in several Grid projects. Among many workflow standards, BPEL, Business Process Execution Language, is emerging as a de-facto workflow standard in Grid and Web services communities. In this paper, we present the adoption of standard BPEL to orchestrate Grid services based on OGSI specification. Our approach is based on proxy services, which enable user to interact with OGSI Grid services supporting GSI security mechanisms, OGSI factory mechanism, and notification mechanism. Our proposed architecture is platform-neutral as it does not depend on any specific security architecture. With our implementation, the proxy services will be generated automatically for each target Grid service. Thus, they are not limited to pre-defined Grid services. In addition, our proxy services also remove designtime binding limitations of BPEL and allow user to define the binding information of proxy services in run-time. As our approach utilizes original BPEL specification without special modification, we believe that developing Grid applications on our architecture will benefit from standard BPEL-compliant tools and generic Web services tools. We illustrate the example of using our proposed framework by orchestrating drug discovery processes using BPEL and Grid services.