This document discusses using Jython for embedded software validation. It describes using a runtime plugin model with Jython to provide a platform-independent and extensible test automation framework. The runtime plugin model allows plugins to be dynamically loaded and unloaded at runtime, enabling parallel development and execution of plugins. Jython is embedded in Eclipse to provide an interface between test execution on devices under test and remote test reporting. This approach provides benefits like reusable and extensible test code through the plugin model while avoiding some risks through careful architecture and test planning.

1. Jython for Embedded Software ValidationRaniero VirgilioIAG/ECG/PPD SW Pycon Quattro, 8/5/2010

2. Raniero VirgilioMy Job Software Engineer in Intel Shannon, IrelandResponsible for Test Automation infrastructureMy TeamPPD (Performance Product Division)Embedded SoftwareComplete SOCs for security, communications, storage and embedded designshttp://www.intel.com/embedded/index.htm

3. AgendaValidation in embedded systemsRuntime Plug-in modelRuntime Plug-in model with JythonJython and EclipseResults

4. Validation in embedded systemsA challenging environmentTypical scenarioRequirements and solutions

5. A challenging environmentMultiple hw/sw deploymentsConfiguration set up needs to be fast and reliableSupport for different OS types and versionsConsistent cooperationSeveral teams working on the same infrastructureSynchronization with overseas groups

6. Test Automation scenarioTest CodeXML-RPC sessionServer1 (Windows)Traffic Generator 1XML-RPC sessionTraffic Generator 2Server2 (Windows)Telnet sessionTest DriverDUT1 (Linux/Windows/FreeBSD)Test ExecutionReportsXML-RPC sessionTelnet sessionTest SuitesDUT2(Linux/Windows/FreeBSD)Telnet sessionDUT3(Linux/Windows/FreeBSD)

7. Test Automation requirementsProgramming languagePlatform-independentLibraries for connectivity and string manipulationTest Framework designOOP to maximize reusability of test codePlatform runtime extendibilitySustainable implementationAn effective interface between test execution (local to DUT) and test reporting (distributed)Customizable open source solution

8. Proposed solutionProgramming languagePythontelnetlib, xmlrpclib, SimpleXMLRPCServerre,xml.dom.minidomTest Framework designRuntime plug-in modelSustainable implementationJython embedded in EclipseJython is a Python interpreter written in 100% pure Java

9. Runtime plug-in modelDefinitionDesign Pattern

10. Runtime Plug-in ModelThe term plug-in refers to a type of program that contributes code to the system and adds a special capability to it.The plug-in is unknown at compile-time of the application for which the plug-in is designed.Plug-ins are dynamically plugged into the application they are designed for at runtimeThe key for this model is Dynamic Code Loading

11. Design PatternExtendibility

12. Application capabilities are defined by the supported Plug-in

13. Plug-in can be loaded and unloaded at runtime

14. Plug-in development

15. Each Plug-in shall implement a specified interface

16. The plug-in delegates the Application for high-level services

17. Parallel life-cycle

18. Application and Plug-ins can be developed independently Runtime Plug-in Model with JythonDynamic code loading in Java and JythonMultithreading

19. Dynamic code loading in JavaRuntime source compilation

20. StandardJavaFileManager handles the source code

21. JavaCompiler executes the compilation and creates a class file

22. DiagnosticCollector gathers compilation information

23. Class file deployment

24. A new Classloader has to be defined

25. It need to extend the previous one with the new class fileClient

26. Dynamic code loading in JythonOne step task