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W-JAX 2011: OSGi with Apache Karaf
- 1. OSGI with Apache Karaf
- 4. Consultant & Architect Talend ESB CXF
- 5. Camel
- 6. Karaf
- 7. ActiveMQ
- 8. Talend Open Studio [email_address] Document Identifier
- 10. What is Apache Karaf?
- 11. How can I develop for Apache Karaf?
- 12. What are the advanced features?
- 13. What is coming? Document Identifier
- 14. Why OSGI? Component-based modularity
- 15. SOA in the small
- 16. Standard services Document Identifier
- 17. Component-based modularity An individual component is a bundle A bundle is a jar file with additional metadata Imports Exports Dependency management is enabled through metadata Imports Exports Bundle lifecycle is controlled by the OSGI container Classloading environments are separated between bundles Multiple bundles can be combined into a feature Feature Document Identifier Bundle Classes & Ressources Metadata Classes & Ressources Metadata
- 18. Component-based modularity Metadata is located in MANIFEST.MF Can be created manually Peter Krien's bnd tools and derived utilities provide a convenient way to create it automagically ManifestVersion: 1.0 BundleManifestVersion: 2 BundleVersion: 2.1.6 BundleName: Talend Logger BundleSymbolicName: t_logger ExportPackage: org.talend.osgi.logger;version=2.1 ImportPackage: org.apache.log4j;version=”[1.2,2)” PrivatePackage: org.talend.osgi.logger.internal Document Identifier
- 19. SOA in the small ● OSGi Service Registry allows a bundle to expose or use services ● A service is specified by an interface ● A provider bundle registers an interface implementation Service Registry Bundle Bundle register get listen ● A consumer bundle searches and uses a service Document Identifier B A Interface Impl Interface
- 20. Standardized Utility Services Service Description Configuration Admin set and get the configuration information of deployed bundles Logging receives log entries and then dispatches these entries to other bundles Event Admin inter-bundle communication mechanism based on a publish-and-subscribe model User Admin database with user information (private and public) for authentication and authorization purposes ... Source : Wikipedia
- 21. What is Karaf? - Sits “on top” of an OSGI container - Adds additional functionality via add-on features - Control of container via direct shell, ssh or web console - Provisioning and deployment via filesystem, Maven repository, archive, OBR - Administration and management via JMX - Configuration via filesystem, web console, JMX - Dependency injection with Spring DM or Blueprint Document Identifier OSGI Container Console Provisioning & Deployment Admin Management Configuration Blueprint ….
- 22. How can I develop for Apache Karaf? Document Identifier
- 23. Use the standard Maven project structure Organize sources and resources as usual
- 24. No OSGI-specific configuration required For OSGI-services use Blueprint configuration Use the Maven Bundle plugin to generate your OSGI configuration Document Identifier
- 25. Deploy locally Container Repository mvn package mvn install bundle:install file:// ... bundle:install mvn: ... Document Identifier
- 26. Get your dependencies Bundles for 3rd party dependencies are easily available Use a pre-packaged bundle Maven Central
- 27. Apache ServiceMix Bundle Repository
- 28. SpringSource Enterprise Bundle Repository Wrap an existing JAR file By adding the MANIFEST.MF
- 29. Using bnd or other tools Document Identifier
- 30. Use Karaf WebConsole to control your container Provides a remote admin gui with similar capabilities like the local shell View and control bundles and features
- 31. View and edit bundle configuration
- 32. Access logs
- 33. Use a web-based shell
- 35. Dynamically configure your application Imports Exports Configuration source ConfigAdmin service monitor inject Document Identifier Bundle Classes & Ressources Metadata Container
- 36. Package your feature for deployment Container mvn package deploy Document Identifier Karaf Archive (KAR)
- 37. Integrate Karaf with CXF and Camel CXF Provide WebService based applications as OSGi bundles
- 38. Simple deployment for Camel routes
- 40. Or use pre-packaged distribution, e.g., Talend ESB Document Identifier Container
- 41. Advanced features Child instances Provide multiple container instances from one installation Karaf Cellar Clustering for Karaf Karaf Cave (incubation) Better support for OSGi Bundle Repository ... Document Identifier
- 42. Where to go from here? Karaf homepage karaf.apache.org Blogs Christian Schneider www.liquid-reality.de/ Dan Kulp www.dankulp.com/blog/ Jean-Baptiste Onofre blog.nanthrax.net/ Talend Forum www.talendforge.org/forum/ Document Identifier