About me. Jesper Pedersen. Project lead for. Chairman for Boston JBoss User Group. Core developer, JBoss by Red Hat

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2 About me Jesper Pedersen Core developer, JBoss by Red Hat Project lead for IronJacamar JCA container Tattletale software quality tool JBoss Profiler 2 profiler suite Papaki high-performance annotation scanner Chairman for Boston JBoss User Group

3 Overview Why is Tattletale needed? Features Tattletale in Action! The future

4 Why is Tattletale needed? Problems You are faced with a lot of Java archives and you don't know how they relate You need to know in which archive(s) a class is located or if it is missing from the class-path You need quick access to version identifiers and the OSGi status You need help with removing illegal API usage

5 Why is Tattletale needed? And did anybody say Jar hell?!? * Number of dependencies reduced to not cause heart-attacks

6 Goals Help identify dependencies within the project on standard APIs Help getting an overview of all Java archives which classes are provided which classes are required version information Help locate class information

7 Goals Generate reports that can help you improve the software quality of your project - f.ex. splitting your project into the right number of archives removing black listed API usage And all this without having access to the source code!!

8 Features Command line tool java -jar tattletale.jar sourcedir outputdir uses Javassist for its foundation Integrates with Apache Ant <tattletale:report> Integrates with Apache Maven tattletale-maven/report

9 Features Analyzer records Archive information Archive level dependencies Package level dependencies Class level dependencies Generates reports based on this information Using a ClassLoaderStructure plugin NoopClassLoaderStructure JBossAS[4 5 6]ClassLoaderStructure

10 Features Can resolve dependencies against standard profiles JDK5, JDK6, EE5, EE6, Seam, CDI and Spring Ability to filter unwanted results from the reports Allows you to make them go Green Can exclude directories from scan

11 Reports Three categories of reports Dependency General Archive Each report focus on a specific area Severity: INFO, WARNING, ERROR Status: GREEN, YELLOW, RED Very easy to implement new reports All reports are available in HTML

12 Reports Dependency reports Dependants (Archive + Class level) Depends On (Archive + Class level) Transitive Dependants Transitive Depends On Graphical Dependencies Circular Dependency

13 Reports Dependants Shows archives that depends on a certain archive

14 Reports Depends On Shows the dependencies for an archive

15 Reports Graphical Dependencies Shows the dependencies at archive and package level

16 Reports General reports Class location OSGi status Sealed information Signed information Eliminate Jar files with different version Invalid version Multiple Jar files

17 Reports General reports Multiple locations Unused Jar files No version Blacklisted API usage

18 Reports Class location Shows in which archive(s) a class is located

19 Reports OSGi status Shows the OSGi status and provides an OSGi MANIFEST.MF template

20 Reports Blacklisted API usage List archives that uses black listed APIs

21 Reports Archive reports JAR Name Locations Manifest Requires Provides Including SerialVersionUID

22 Integration Tattletale integrates with Apache Ant xmlns:tattletale="antlib:org.jboss.tattletale.ant" Report task generates all the reports Source / Destination / Configuration / Filter Reports / ClassLoader / Profiles Excludes / BlackListed FailOnInfo / FailOnWarn / FailOnError The same for Apache Maven plugin

23 Enough already!! DEMO

24 The future Allow easier report integration Support for enterprise / custom archives WAR, EAR, RAR, ESB, SAR,... Integration with continuous build platforms Hudson And of course more reports + Your ideas :-)

25 Join our hack fest! Geek'ing out! 7.30 PM -> 2.00 AM Meet core JBoss developers and fellow hackers Get a quick introduction to several projects Start hacking on your issue of interest :) Don't worry; I have enough tasks for you all!

26 Links Tattletale Forum JIRA

27 Contact Blog