OSGi in the TK: The Bundle Maker - Nils Hartmann & Gerd Wuetherich
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OSGi in the TK - The BundleMaker Nils Hartmann, Techniker Krankenkasse Gerd Wütherich, Freelancer Page 1
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BundleMaker is a tool to modularize huge existing Java-based applications. While it was originally developed to support the OSGi migration process of the Techniker Krankenkasse's Java application, it is now an open-source tool hosted at http://www.bundlemaker.org. With BundleMaker you can analyze the structure and dependencies of your Java application including its required third party libraries. In addition, you can define various transformations to restructure your system according to your new modularized target architecture. BundleMaker is able to export the whole restructured system into several output formats such as OSGi binary bundles or projects for the Eclipse PDE development tools. Developed as an OSGi/Eclipse-based application itself, BundleMaker is highly customizable to make it a perfect match for a variety of usage scenarios. In this session we will give you an introduction into BundleMaker's ideas and its underlying concepts.
Transcript of OSGi in the TK: The Bundle Maker - Nils Hartmann & Gerd Wuetherich
OSGi in the TK - The BundleMaker
Nils Hartmann, Techniker Krankenkasse Gerd Wütherich, Freelancer
Page 1
Initial Situation
» Main application at Techniker Krankenkasse (TK) » One of Germany‘s largest health insurance funds
» 3-Tier architecture
» Started in 1998
» More than 100 applications
» 65.000 Java classes
» 6500 packages
» 5 mio lines of code
» 100 active developers
The Project TKeasy
Dependency problems
» Need to modularize the application
» Current focus: the module layer
» Easier maintanance
» Reuse of components in other contexts
Why Modularity?
Why OSGi? » „The“ module system for Java
» Open infrastructure: Extender Pattern, Hooks
» Future: introduce service layer
The Migration Path
The Development Cycle
Continuous Migration I
Continuous Migration II
Continuous Migration III
Continuous Migration IV
The „Final Transformation“
The BundleMaker
» Alpha Version
» http://www.bundlemaker.org
» Source code available » http://github.com/wuetherich/bundlemaker
» EPL
» Goal: Open platform for software analysis applications
BundleMaker „Open Source Edition“
BundleMaker Concepts
BundleMaker - Analyze
BundleMaker – Transform
BundleMaker - Export
Thank you very much!
