Nuxeo Runtime 2: OSGi, Glassfish support, etc

Nuxeo Runtime 2 recent and future work Bogdan Stefanescu |

Overview ● What's Nuxeo Runtime? ● Requirements ● Components ● Extensions ● What's next? ● HK2 adoption ● Dependency injection ● More Annotations ● Hot Deployment ?

What's Nuxeo Runtime? ● Nuxeo Runtime is the Nuxeo micro kernel. ● The foundation of all Nuxeo applications ● Nuxeo EP, Nuxeo RCP, Nuxeo WebEngine, Nuxeo Shell etc. ● Provides a modules subsystem ● OSGI compatible modules (aka bundles) ● Provides a component model ● Inspired from OSGI descriptive components ● Provides an extension point model ● Provides a service model

Nuxeo Runtime - Requirements ● Nuxeo Runtime was designed to fulfill the following requirements: ● Applications are made from components. ● Be able to assemble new applications from specific set of components. ● Be able to add / remove components into an (optionally running) application. ● Be able to deploy and run modules in any OSGi framework. ● Provide an extension mechanism for components.

Nuxeo Runtime - Components ● Modules are implemented as OSGi bundles ● A module may provide zero or more components ● Nuxeo Components are very similar to OSGi components ● Components are described through XML files. ● Components are declared in the module MANIFEST file ● Components provides zero or more services

Nuxeo Runtime – Extensions ● Components may expose multiple extension points to let other components extend it ● Components may contribute any number of extensions to other components ● An Extension Point is an abstract concept ● You can see it as a registry of things ● Extensions are declared using XML ● XML fragments are mapped to real Java Objects and registered against the target extension point

Nuxeo Runtime – Deployment

Nuxeo Runtime – Extensibility Editors Actions Views Serializers MyExtensionPoint

What's next? ● Rewriting Nuxeo Runtime on top of HK2 ● HK2 is the micro kernel of GlassFish v3 ● HK2 is very similar with Nuxeo Runtime ● HK2 cool features: ● Able to run in any OSGi framework ● Provide dependency injection through annotations ● Services are declared using annotations ● HK2 missing features: ● Extension Points are missing from HK2! :-(

Nuxeo Runtime - HK2 ● How extension point issue can be solved? ● Already in contact with Sun HK2 developers ● We will contribute to HK2 an extension point mechanism ● Nuxeo Runtime will be an HK2 module ● That will add an extension points mechanism ● That will preserve compatibility with existing model ● Nuxeo Modules will still be packaged as OSGi bundles

Nuxeo Runtime - Future So, what Nuxeo Runtime 2 will provide? ● OSGi compatible modules ● Extension Points declared through annotations ● Extensions declared as XML fragments ● Services declared through annotations ● Dependency injection through annotations ● No more XML to declare things ● Only pure configuration will be stored as XML ● An HK2 micro kernel

Nuxeo Runtime – Is that all? ● ● ● ● Hot Deployment of Modules?

Thank you!

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Nuxeo Runtime 2: OSGi, Glassfish support, etc

by Nuxeo - Open Source ECM on Dec 02, 2008

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Nuxeo Runtime 2: OSGi, Glassfish support, etc — Presentation Transcript