1. A structured legacy to SOA migration process and its evaluation in practice Method Engineering 2014 Presentation by Casper van Schuppen

2. Background paper “A structured legacy to SOA migration process and its evaluation in practice” By Khadka, R., Saeidi, A., Jansen, S., & Hage, J. Conference proceedings; September 2013 Department of Information and Computing sciences at Utrecht University ServiciFi project

3. Purpose Legacy systems: potential reuse Migration of legacy to SOA migration Deal with multiple perspectives – Technological – Organizational – Business Both planning and excecution Overall process

4. Six phases 1. LSU: Legacy System Understanding 2. TSU: Target System Understanding 3. MFD: Migration Feasibility Determination 4. CSI: Candidate Service Identification 5. Implementation 6. D&P: Deployment & Provisioning

5. Related literature Bennett, 1995: one of first reporting on Legacy to SOA migration Much published on approaches and techniques – SMART method by Lewis, Morris & Smith (2005) – SOAMIG method by Zillman et al. (2011) Prior a SLR by the authors was published resulting in this structured process No citations of this paper, because of recency

6. PDD Phases clearly visible 15 sub-activities 23 concepts Additional rules But now let’s zoom in!

7. PDD

9. Example Legacy system at a bank – COBOL based 1.Use tool to extract features from COBOL code 2.Features and QA’s: transaction handling & security 3.Cost Benefit Analysis: proposed migration realistic? If so: 4.Similar techniques as 1 to extract candidate services 5.Architectural appraoch: produce a redeveloped arch. 6.WSDL: specify discovery and how to interoperate

10. References (1/2) Almonaies, A., Cordy, J. R., & Dean, T. R. (2010). Legacy system evolution towards service-oriented architecture. Proceedings of the International Workshop on SOA Migration and Evolution, Madrid, Spain, 53-62. Bennett, K. (1995). Legacy systems: coping with stress. IEEE Software, 12(1), 19-23. Binkley, D. (2007). Source code analysis: A road map. In L.C. Briand and A.L. Wolf (Eds.), 2007 Future of Software Engineering (pp. 104-119). IEEE Computer Society. Brodie, M. L., & Stonebraker, M. (1995). Migrating legacy systems: gateways, interfaces & the incremental approach. San Francisco: Morgan Kaufmann Publishers Inc.. Brown, A., Johnston, S., & Kelly, K. (2002). Using service-oriented architecture and component-based development to build web service applications. Santa Clara, CA: Rational Software Corporation. Cuadrado, F., García, B., Dueas, J. C., & Parada & H. A. (2008). A case study on software evolution towards service-oriented architecture. In Mens, T, Kanellopoulos, Y, Winter, A. (Eds), 2008. AINAW 2008. 22nd International Conference on Advanced Information Networking and Applications-Workshops, (pp. 1399-1404). Glinz, M. (2007). On non-functional requirements. In A.T. Borgida, V.K. Chaudhri, P. Giorgini & E.S. Yu (Eds.), Requirements Engineering Conference, 2007. RE'07. 15th IEEE International (pp. 21-26). Berlin, Germany: Springer-Verlag. Khadka, R., Saeidi, A., Idu, A., Hage, J., & Jansen, S. (2012). Legacy to SOA Evolution: A Systematic Literature Review. In A. D. Ionita, M. Litoiu, & G. Lewis (Eds.), Migrating to SOA and Cloud Environments: Challenges in Service Oriented Architecture and Cloud Computing Environments, (pp. 40 – 70), Hershey: IGI Global. Khadka, R., Saeidi, A., Jansen, S., & Hage, J. (2013a). A structured legacy to SOA migration process and its evaluation in practice. Proceedings of the 2013 IEEE 7th International Symposium on the Maintenance and Evolution of Service-Oriented and Cloud-Based Systems (MESOCA), Eindhoven, The Netherlands, 2-11.

11. References (2/2) Khadka, R., Saeidi, A., Jansen, S., Hage, J., & Haas, G. P. (2013b). Migrating a large scale legacy application to SOA: Challenges and lessons learned. Proceedings of the 2013 20th Working Conference on Reverse Engineering (WCRE), 2013. Koblenz, Germany, 425-432. Lewis, G., Morris, E., O'Brien, L., Smith, D., & Wrage, L. (2005). SMART: The service-oriented migration and reuse technique (No. CMU/SEI-2005-TN-029). Pittsburgh: Software Engineering Institute. Lewis, G., Morris, E., & Smith, D. (2006). Analyzing the reuse potential of migrating legacy components to a service-oriented architecture. Proceedings of the 10th European Conference on the Software Maintenance and Reengineering, 2006. Bari, Italy, 9- 23. Nasr, K. A., Gross, H. G., & van Deursen, A. (2013). Realizing service migration in industry—lessons learned. Journal of Software: Evolution and Process, 25(6), 639-661. Razavian, M., & Lago, P. (2010a). Towards a conceptual framework for legacy to soa migration. In Dan, A., Gittler, F., Toumani, F. (Eds.), Service-Oriented Computing. ICSOC/ServiceWave 2009 Workshops (pp. 445-455). Springer Berlin Heidelberg. Razavian, M., & Lago, P. (2010b). A frame of reference for SOA migration. In Di Nitto, E., Yahyapour, R. (Eds.), Towards a service-based internet (pp. 150-162). Springer Berlin Heidelberg. Sneed, H. M. (1995). Planning the reengineering of legacy systems. IEEE software, 12(1), 24-34. Weerd, I. van de, Brinkkemper, S. (2008). Meta-modeling for situational analysis and design methods. In M.R. Syed and S.N. Syed (Eds.), Handbook of Research on Modern Systems Analysis and Design Technologies and Applications (pp. 38-58). Hershey: Idea Group Publishing. Zillmann, C., Winter, A., Herget, A., Teppe, W., Theurer, M., Fuhr, A., Horn, T., Riediger, V., Erdmenger, U., Kaiser, U., Uhlig, D. & Zimmermann, Y. (2011). The SOAMIG Process Model in Industrial Applications. Proceedings of the 2011 15th European Conference on Software Maintenance and Reengineering, Oldenburg, Germany, 339-342.