G-ode, an extension of the apache ode for grid services

In our previous work [1], this problem was deeply analysed and from that a clean solution was proposed allowing BPEL-ODE invocation of Grid services. This paper aims to combine the previous result with new complete implementation for the proposed solution. The meaning of our solution will be explained more clearly through a BPEL workflow example. Our implementation called G-ODE, is an extension of the ODE enabling both Web Services and Grid Services invocation. | Journal of Computer Science and Cybernetics, , (2012), 245 259 G-ODE, AN EXTENSION OF THE APACHE ODE FOR GRID SERVICES BINH THANH NGUYEN1 , DUC HUU NGUYEN1 , THUY THANH NGUYEN2 1 Hanoi University of Science and Technology 2 University of Engineering and Technoloty Tóm t t. G¦n ¥y, dàch vö l÷îi v c¡c h» thèng luçng cæng vi»c sû döng BPEL ang thu hót nhi·u sü quan t¥m nghi¶n cùu trong mæi tr÷íng t½nh to¡n l÷îi, bði v¼ chóng cho ph²p c¡c cæng vi»c húu döng câ c§u tróc câ thº ÷ñc t¤o düng v ÷ñc gåi mët c¡ch tü ëng trong mæi tr÷íng l÷îi. Vîi c¡c dàch vö Web (Web services) thæng th÷íng (c¡c dàch vö khæng câ tr¤ng th¡i), vi»c t¤o düng v gåi chóng câ thº ÷ñc thüc hi»n b¬ng BPEL v c¡c engine (l ch÷ìng tr¼nh dàch v thi h nh) cõa nâ nh÷ ActiveBPEL v Apache ODE. Tuy nhi¶n, vi»c gåi c¡c dàch vö l÷îi (Grid services) (c¡c dàch vö câ tr¤ng th¡i) l¤i g¥y ra mët v§n · cho BPEL v c¡c engine cõa nâ, bði v¼ chóng thi¸u c¡c °c iºm hé trñ c¡c dàch vö câ tr¤ng th¡i. Trong mët nghi¶n cùu tr÷îc ¥y cõa nhâm t¡c gi£ [1], v§n · n y ¢ ÷ñc ph¥n t½ch kÿ l÷ïng, v tø â mët gi£i ph¡p ìn gi£n v ng­n gån ¢ ÷ñc · xu§t nh¬m cho ph²p vi»c gåi c¡c dàch vö l÷îi tø Apache ODE engine. B i b¡o nh¬m têng hñp c¡c k¸t qu£ tr÷îc ¥y, còng vîi k¸t qu£ c i °t mîi ho n ch¿nh cho gi£i ph¡p ¢ ÷ñc · xu§t tr¶n. Þ ngh¾a thüc ti¹n cõa gi£i ph¡p ¢ · xu§t s³ ÷ñc minh håa rã r ng hìn thæng qua mët v½ dö luçng cæng vi»c sû döng BPEL. C i °t cõa chóng tæi, ÷ñc gåi l G-ODE, l mët sü mð rëng cõa Apache ODE, nh¬m cho ph²p vi»c gåi d¹ d ng c£ hai lo¤i dàch vö l Web v L÷îi. Abstract. Grid services and workflows using BPEL have gained much interest in Grid computing recently as they allow useful structured tasks to be composed and invoked automatically within a Grid environment. With normal Web services (stateless ones), the composition and invocation can be done with BPEL and its engines such as ActiveBPEL and Apache ODE. However, the invocation of Grid services (stateful ones) .