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Eclipse Virgo
- 1. Eclipse Virgo Glyn Normington 1
- 2. Agenda • What is Virgo? • Externals • Concepts • How can I get involved? 2
- 3. What is Virgo? • “Dynamic Enterprise Application Platform” • Based on SpringSource dm Server 2.0 • Not to be confused with Spring DM • Objectives: • Better OSGi platform • Migration of Java EE apps • Modular and extensible 3
- 4. Problems Virgo Solves • Groups bundles into manageable units • Enables the use of existing open source libraries • TCCL, LTW, implicit package use • Provisions from repositories • Extensive diagnostics • resolution failure, deadlock, delayed services 4
- 5. Virgo and EclipseRT Virgo Gemini web web container kernel blueprint ... ... Equinox Spring 5
- 6. Virgo Externals Admin startup.sh -clean console service wrapper JMX client /pickup Virgo Shell /config /serviceability 6
- 7. Artifacts Regions Plans Virgo Concepts Pipelines Repositories 7
- 8. Artifacts 8
- 9. Artifacts • Identified by type, name, version • Types: • bundle - OSGi bundle • configuration - properties file • plan - list of artifacts • ... 9
- 10. Plans 10
- 11. Plans • XML • List artifacts by type, name, version range • Scoping • Atomicity • PARs • Contain artifacts • Scoped, atomic 11
- 12. Scoping Synthetic Context A B A B Y X 12
- 13. Repositories 13
- 14. Repositories • Artifacts indexed by type, name, version • Supports queries e.g. by version range • Repository types: • External • Watched • Remote • Repositories may be chained 14
- 15. Repository Chaining remote 15
- 16. Pipelines 16
- 17. Pipelines install transform quasiInstall resolve quasiResolve commit 17
- 18. Regions 18
- 19. Regions User Region services packages services Kernel Region 19
- 20. How can I get involved? 20
- 21. Current Status • Renaming & relicensing underway • IP scrutiny ready to begin • Baseline release is the goal 21
- 22. Roles • Casual user • Expert user • Contributor • Committer 22
- 23. Committer Skills • Know or willing to learn: • Clean architecture & code • Unit and integration testing • Concurrency • (Deep) OSGi • git, ant, ivy, etc. 23
- 24. Work Areas • Developer docs & wiki • Jetty adapter • Regions and nested frameworks • p2 integration • More server types • Integration, batch, ECF, ... 24
- 25. Further Information • Virgo Community Launch BoF • Today 7.15pm in Tasman • Application Models for OSGi BoF - Wed. • http://www.eclipse.org/virgo • Join us in the forum and dev list • #VirgoRT • http://www.springsource.org/dmserver • Download dm Server 2.0 and try it out 25
Editor's Notes
- dm Server open source project at v2.0 Associated Eclipse tooling: Plugin Development Environment Web Tools Platform
- Server runtime for EclipseRT Kernel for application deployment and management
- Compare Equinox shell /pickup deployed and started Interesting events Method entry/exit (via aspect) Asserts Unchecked exceptions (via aspect) Deadlocks Resolution failures - N.B. RFD JMX dump request Event log messages: Component, number, severity. I18N Log messages: Global and per-application logging Dumps: Resolver state, thread stacks, heap, in-memory log, ...
- Fluffy thought-bubbles - nothing to do with cloud computing!
- Bundles include WARs Configuration artifacts mapped into Config. Admin. deploy: install and start
- Prevent interference between applications Scopes bundles, packages, and services Synthetic context bundle acts as TCCL for library calls Scope acts as boundary for LTW Y cannot access A and B
- External repo: deep, configurable pattern Watched repo: flat
- Remote refers to repo hosted by Virgo web server Remote repo caches index Chain defines a search order (query)
- transform stage drives Transformer extensions Transform tree of artifacts (metadata, file content) InstallArtifactLifecycleListener driven for each artifact lifecycle event
- Built on Equinox nested frameworks Enables different versions of Spring
- Tooling -> WTP, PDE