BRUE Behavioral Reverseengineering in UML as Eclipse plugin

BRUE Behavioral Reverse-engineering in UML as Eclipse plug-in PRESENTATION 2 SRI RAGURAMAN CIS 895 KANSAS STATE UNIVERSITY

Overview of Presentation Overview Architecture Artifacts Demo • Overall flow • Critical use-cases • Overall structural view • Detailed view of each module • Implemented as Eclipse plug-ins • Formal specification • Project plan and Test Plan • Demo

Overall flow • Launch application Analyze trace • Analyze trace xml • Collect execution trace • XML format Collect trace • Generate UML model files • Visualize UML model. Visualize files as UML diagrams

Critical use-cases

Core functionalities Collector Collect execution trace from running application Analyzer Generate UML model files Visualizer Ui Render model files as UML diagrams Each Core functionality is implemented as an Eclipse plug-in. Interface between plug-ins is through extension-points.

Plug-ins and their dependencies

Use-Case 1

Plug-in Collector Responsibilities Defining BRUE Launch configuration Can specify which packages/classes/methods to instrument Instrumenting application Uses Eclipse Probekit to instrument class files Launching application Uses Eclipse launch configuration delegates to launch Java applications.

Plug-in Collector Package Diagram

Plug-in Collector Launch configuration

Plug-in Collector Interaction between launcher and instrumenter

Plug-in Collector Instrumentation Instruments class files Uses Eclipse Probekit for instrumentation. Probekits Snippet of code to be run at method entry/exit events. Records Method Entry and Method Exit events Method exit event includes actual return type, and any exception thrown.

Plug-in Collector Launching Java application

Use-case 2 Need to control when to start or stop trace data collection. Need a way for BRUE plug-in to “talk” to the launched application.

Plug-in Collector Controlling when to collect trace data A lightweight Agent class is attached to application On a thread, from within the launched application, listen for requests from BRUE plug-in. Maintain flags for enabling or disabling trace data collection.

Controlling trace data collection

Trace XML Structure A “Scenario” contains a trace of method entry and method exit events. The events references an id that describes the method details (method name, signature, return type, its class name, package name).

Trace XML Structure

Generating UML 2 Model files Parse trace xml file. Extract packages and classes from trace xml file Build UML 2 based package model Build UML 2 based class model Build UML 2 based interaction model

Building UML 2 Models Use of Builder pattern

Use-case 3

Package diagram and class diagram Eclipse GMF used to draw packages and classes Model – UML 2 model generated from analyzer Graphical definition file Contains properties for graphical notations (rectangle, polyline) Graphical mapping definition Maps UML 2 model elements with graphical notations. Eclipse GMF builds a editor based on the mapping.

Viewing Interaction Diagrams Use of Eclipse GEF Sequence diagrams is not freeform and should conform to UML 2 specifications. GEF applications follow MVC paradigm Ø Ø Ø Model Edit. Part (Controller) Figure (View)

Sequence diagram Models

Sequence Diagrams Editparts One Edit part per Model

Sequence Diagram Figures

Drawing a sequence diagram Sequence. Diagram. Editor

Deployment Deployed as Eclipse plug-in Dependencies Java 5 or later Eclipse 3. 2 (or later) with these plug-ins GMF 2. 0 GEF 3. 2 UML 2 2. 0

Artifacts Test Plan Use of JUnit Planned to use Eclipse TPTP for measuring test coverage Formal specification Positioning of sequence diagram model elements Project Planning for Presentation 3 in September third week.

Demo