Abstract
In the paper we consider a method for mining so-called “hybrid” UML models, that refers to software process mining. Models are built from execution traces of information systems with service-oriented architecture (SOA), given in the form of event logs. While common reverse engineering techniques usually require the source code, which is often unavailable, our approach deals with event logs which are produced by a lot of information systems, and some heuristic parameters. Since an individual type of UML diagrams shows only one perspective of a system’s model, we propose to mine a combination of various types of UML diagrams (namely, sequence and activity ), which are considered together with communication diagrams. This allows us to increase the expressive power of the individual diagram. Each type of diagram correlates with one of three levels of abstraction (workflow, interaction and operation), which are commonly used while considering web-service interaction. The proposed algorithm consists of four tasks. They include splitting an event log into several parts and building UML sequence, activity and communication diagrams. We also propose to encapsulate some insignificant or low-level implementation details (such as internal service operations) into activity diagrams and connect them with a more general sequence diagram by using interaction use semantics. To cope with a problem of immense size of synthesized UML sequence diagrams, we propose an abstraction technique based on regular expressions. The approach is evaluated by using a developed software tool as a Windows-application in C#. It produces UML models in the form of XML-files. The latter are compatible with well-known Sparx Enterprise Architect and can be further visualized and utilized by that tool.
Highlights
Unlike existing reverse engineering approaches that use source code, we propose an approach that works with system execution traces which can be extracted from event logs
This paper introduced a new concept of hybrid Unified Modeling Language (UML) models and proposed a method of mining them from event logs of service-oriented architecture (SOA) information systems using a service mining
Our method builds models by using only event logs. This is an advantage over some reverse engineering techniques because the source code is not always available
Summary
Tools, which help to obtain this knowledge in suitable form for analytics are extremely useful Different approaches, such as modeling, development within the standardized life cycle, testing, quality assurance (QA), verification, etc., are applied to improve the system quality and error correction. As almost all systems produce event logs which contain information about interesting system components, it is possible to build models including all of these components. It simplifies the process of reverse engineering and allows us to expand its application area. Our goal is to expand the applicability of UML-based models for SOA-systems by developing new approaches and tools for mining such models from event logs.
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