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Article

Mining Hierarchical UML Sequence Diagrams from Event Logs of SOA Systems while Balancing between Abstracted and Detailed Models

Davydova K. V., Shershakov S. A.

In this paper, we consider an approach to reverse engineering of UML sequence  diagrams from event logs of information systems with a service-oriented architecture (SOA).  UML sequence diagrams are graphical models quite suitable for representing interactions in  heterogeneous component systems; in particular, the latter include increasingly popular SOA- based  information  systems.  The  approach  deals  with  execution  traces  of  SOA  systems,  represented  in  the  form  of  event  logs.  Event  logs  are  created  by  almost  all  modern  information  systems  primarily  for  debug  purposes.  In  contrast  with  conventional  reverse  engineering techniques that require source code for analysis, our approach for inferring UML  sequence diagrams deals only with available logs and some heuristic knowledge. Our method  consists  of  several  stages  of  building  UML  sequence  diagrams  according  to  different  perspectives  set by  the analyst.  They include mapping  log attributes  to diagram  elements,  thereby determining a level of abstraction, grouping several components of a diagram and  building hierarchical diagrams. We propose to group some of diagram components (messages  and  lifelines)  based  on  regular  expressions  and  build  hierarchical  diagrams  using  nested  fragments. The approach is evaluated in a software prototype implemented as a Microsoft  Visio add-in. The add-in builds a UML sequence diagram from a given event log according  to a set of customizable settings.