Abstract
Web service orchestration is popular because the application logic is defined from a central and unique point of view, but it suffers from scalability issues. In choreography, the application is expressed as a direct communication between services without any central actor, making it scalable but also difficult to specify and implement. In this paper we present FOCAS, in which the application is described as a classic service orchestration extended by annotations expressing where activities, either atomic or composite, are to be executed. FOCAS analyzes the orchestration model and its distribution annotations and transforms the orchestration into a number of sub-orchestrations to be deployed on a set of distributed choreography servers, and then, deploys and executes the application. This approach seemingly fills the gap between “pure” orchestration (a single control server), and “pure” choreography (a server per service). The paper shows how FOCAS transforms a simple orchestration into a distributed one, fitting the distribution needs of the company, and also shows how choreography servers can be implemented using traditional orchestration engines.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Alonso, G., Casati, F., Kuno, H., Machiraju, H.: Web Services - Concepts, Architectures and Applications. Springer, Heidelberg (2003)
Papazoglou, M., van den Heuvel, W.: Service oriented architectures: approaches, technologies and research issues. The VLDB Journal 16(3), 389–415 (2007)
Peltz, C.: Web services orchestration and choreography. Computer 36(10), 46–52 (2003)
Cubera, F.e.a.: Web Services Business Process Execution Language. Specification (April 2007), http://docs.oasis-open.org/wsbpel/2.0/OS/wsbpel-v2.0-OS.pdf
Weske, M.: Business Process Management: Concepts, Languages, Architectures. Springer, Heidelberg (2007)
W3C: Web Services Choreography Interface (WSCI). Specification (August 2002), http://www.w3.org/TR/wsci/
W3C: Web services choreography description language version (November 2005), http://www.w3.org/TR/2004/WD-ws-cdl-10-20040427/
Estublier, J., Ionita, A., Nguyen, T.: Code generation for a bi-dimensional composition mechanism. In: Central and East European Conference on Software Engineering Techniques (2008)
Pedraza, G., Dieng, I., Estublier, J.: Multi-concerns composition for a process support framework. In: Proceedings of the ECMDA Workshop on Model Driven Tool and Process Integration, FOKUS, Berlin (June 2008)
Chollet, S., Lalanda, P.: Security specification at process level. In: IEEE International Conference on Services Computing (SCC 2008) (July 2008)
Koehler, J., Hauser, R., Sendall, S., Wahler, M.: Declarative techniques for model-driven business process integration. IBM Systems Journal 44(1), 47–65 (2005)
Nitzsche, J., van Lessen, T., Karastoyanova, D., Leymann, F.: Bpellight. In: Alonso, G., Dadam, P., Rosemann, M. (eds.) BPM 2007. LNCS, vol. 4714, pp. 214–229. Springer, Heidelberg (2007)
Charfi, A., Mezini, M.: Hybrid web service composition: business processes meet business rules. In: ICSOC 2004: Proceedings of the 2nd international conference on Service oriented computing, pp. 30–38. ACM Press, New York (2004)
Pedraza, G., Estublier, J.: An extensible services orchestration framework through concern composition. In: Proceedings of International Workshop on Non-functional System Properties in Domain Specific Modeling Languages, Toulouse (September 2008)
Estublier, J., Dami, S., Amiour, M.: Apel: A graphical yet executable formalism for process modeling. Automated Software Engineering: An International Journal 5(1), 61–96 (1998)
France, R., Rumpe, B.: Model-driven development of complex software: A research roadmap. In: Future of Software Engineering, 2007. FOSE 2007, pp. 37–54 (May 2007)
Montagut, F., Molva, R.: Enabling pervasive execution of workflows. In: CollaborateCom 2005, 1st IEEE International Conference on Collaborative Computing:Networking, Applications and Worksharing, p. 10. IEEE Computer Society Press, Los Alamitos (2005)
Benatallah, B., Dumas, M., Sheng, Q.Z.: Facilitating the rapid development and scalable orchestration of composite web services. Distributed and Parallel Databases 17(1), 5–37 (2005)
Chafle, G., Chandra, S., Mann, V., Nanda, M.: Decentralized orchestration of composite web services. In: WWW Alt 2004: Proceedings of the 13th international World Wide Web conference, pp. 134–143. ACM, New York (2004)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Pedraza, G., Estublier, J. (2009). Distributed Orchestration Versus Choreography: The FOCAS Approach. In: Wang, Q., Garousi, V., Madachy, R., Pfahl, D. (eds) Trustworthy Software Development Processes. ICSP 2009. Lecture Notes in Computer Science, vol 5543. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-01680-6_9
Download citation
DOI: https://doi.org/10.1007/978-3-642-01680-6_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-01679-0
Online ISBN: 978-3-642-01680-6
eBook Packages: Computer ScienceComputer Science (R0)