1. Problem Context SODA: A Tool Support for the Detection of SOA Antipatterns Mathieu Nayrolles1,3, Francis Palma 1,2, Naouel Moha1, Yann-Gaël Guéhéneuc2 1 LATECE , Département d'informatique, Université du Québec à Montréal, Canada 2 Ptidej Team, DGIGL, École Polytechnique de Montréal, Canada 3 CESI.eXia, Ecole Superieur d'Informatique, France 2. Problem Context (1/2) Service-based System Service Requester HTTP, SOAP, WSDL, UDDI, WS-Technologies Service Provider Service Based Systems (SBSs) evolve to fit new user requirements, execution contexts: - may degrade design and quality of service (QoS) - may cause the appearance of common poor solutions: Antipatterns - Antipatterns hinder the future maintenance and evolution of SBSs 2 Francis Palma, Specification and Detection of SOA Antipatterns 3. Problem Context (2/2) Tiny Service Multiservice Examples of SOA Antipatterns: Tiny Service: Small service with few methods which requires several coupled services to complete an abstraction. Multiservice: Implements a multitude of methods, is not easily reusable because of low cohesion of its methods, is often unavailable due to overload 3 Francis Palma, Specification and Detection of SOA Antipatterns 4. Introduction: Contribution With the goal to detect SOA Antipatterns in SBSs: - SODA (Service Oriented Detection for Antipatterns), a SODA Tool novel and innovative approach. - SOFA (Service Oriented Framework for Antipatterns), a SODA Approach framework, - to specify SOA antipatterns and detect them automatically - to perform static and dynamic analysis SOFA Framework - SODA tool to perform detection using a Graphical User Interface (GUI). 4 Francis Palma, Specification and Detection of SOA Antipatterns 5. SODA: Our Approach Rule Card SBS Detection Algorithm 3. Detection Templat e 2. Generation Textual Description of Antipatterns 1. Specifications SODA: Service Oriented Detection for Antipatterns Suspicious Services 5 Francis Palma, Specification and Detection of SOA Antipatterns 6. SOFA: Underlying Framework Main Components: (1) Automated generation of detection algorithms (2) Computation of static and dynamic metrics (3) Specification of rules 6 Francis Palma, Specification and Detection of SOA Antipatterns 7. SODA Tool 7 Francis Palma, Specification and Detection of SOA Antipatterns 8. SODA Tool: Principal Features - Direct import of an SBS as a Jar package. - Straight forward detection interface for the users, handy both for beginners and experts. - Expose all the detection details, i.e., metric values, corresponding rule cards, textual descriptions of antipatterns etc. - Supports both well-known metric based and execution trace based analysis of SBSs. - Exposes all the execution traces, association rules generated from those traces, and relations among them, that is also useful to the users to better understand the SBS analyzed. 8 Francis Palma, Specification and Detection of SOA Antipatterns 9. SODA Tool (1/7) Enlists the SOA antipatterns that can be detected. 9 Francis Palma, Specification and Detection of SOA Antipatterns 10. SODA Tool (2/7) Textual description for selected antipattern. 10 Francis Palma, Specification and Detection of SOA Antipatterns 11. SODA Tool (3/7) Corresponding rule card. 11 Francis Palma, Specification and Detection of SOA Antipatterns 12. SODA Tool (4/7) Results, i.e., suspicious service(s) 12 Francis Palma, Specification and Detection of SOA Antipatterns 13. SODA Tool (5/7) Values for all metrics (from the associated rule card), for each service 13 Francis Palma, Specification and Detection of SOA Antipatterns 14. SODA Tool (6/7) Exposes the generated association rules. 14 Francis Palma, Specification and Detection of SOA Antipatterns 15. SODA Tool (7/7) Helps to visualize the suspicious service(s) within the analyzed SBS. 15 Francis Palma, Specification and Detection of SOA Antipatterns 16. Results (1/3): Detection Detection of Bottleneck Service: Mediator and Patient DAO 16 Francis Palma, Specification and Detection of SOA Antipatterns 17. Results (2/3): Detection Detection of Duplicated Service: Mediator and Communication 17 Francis Palma, Specification and Detection of SOA Antipatterns 18. Results (3/3): Detection Detection of Multiservice: Mediator 18 Francis Palma, Specification and Detection of SOA Antipatterns 19. Conclusion 19 Francis Palma, Specification and Detection of SOA Antipatterns 20. Future Work - Add more SOA antipatterns to SOFA - Develop an Eclipse plugin to support SOA antipatterns detection - Adapt other technologies, e.g., RESTful services, SOAP services in the SODA tool - Introduce refactoring module in SODA 20 Francis Palma, Specification and Detection of SOA Antipatterns