How Things Work - IPS and GF v3 Packages (GlassFish à la Carte)

You probably know that the new, modular, GlassFish v3 is built from (OSGi) components that can be updated using IPS. We assemble these pieces into ready-to-go JavaEE 6 Web Profile and full JavaEE 6 bundles but they can also be used to create à la carte distributions, as Alexis shows in his latest posts.

I recommend you to at least try the first example to get a better understanding of how all these technologies work together. The beauty of GFv3 is that everything is very small and fast - I'm writing this entry from a public WiFi site with pretty moderate connectivity and I'm spending more time waiting on BSC than running the example.

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Part I starts with a IPS toolkit image from IPS Best Practices. The toolkit image is 5MB (most of it is the python 2.4 runtime) and has no GlassFish in it. From there, the next step is to download the GF v3 nucleus (2.41MB), which automatically brings in Felix (564KB), Grizzly (943KB) and HK2 (565KB); the IPS packages include the relevant OSGi modules.

The rest of that entry shows how to install the updatecenter IPS pkg (that is the biggest package because of python graphical toolkit) and how to use it to add the management pkg, and then creates and starts a domain.

Part II in the series shows first how to install the GFv3 Web Container; then it mirrors Jerome's recent entry on GF v3, OSGi and Spring (that portion gets a bit complex and I see that Jerome already published a simpler version). Part III will continue the main theme of creating an a la carte GF v3 that has the components you want and is yet extensible.

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