On Wed, Sep 23, 2009 at 08:25, David Jencks <[email protected]> wrote: > > On Sep 22, 2009, at 10:50 PM, Ivan wrote: > > After reading some code changes of the geronimo-kenel in the sanbox, I found > that we keep the Geronimo kenel as an OSGI service, and each Configuration ( > or a bundle) will search it and start the configuration as we do in the past > while starting. > > There's a difference in lifecycles between osgi bundles and geronimo > configurations. > OSGI: > bundles can be installed, in which case the classes are not available, or > started, in which case the classes are all available and the bundle > activator has been started. AFAICT there is no other built in > "no-really-start-it" state beyond "started". There might be more > less-started states I'm not aware of.
OSGi has the following states for bundles: * Installed * Resolved * Started Resolved means the classes are available and Started means the activator has been started. Of course, we have Started > Resolved. But Resolved might be what you were looking for. > Geronimo: > A Configuration is a gbean. You can't get much usefaul data out of it until > its started. Once it is started the classes are available and you can find > out what services (gbeans) are in the configuration and look at their > attributes. There's a further state of "all gbeans started". The > configuration manager treats these states as "loaded" and "started" > So far it seems to work to do something similar in the osgi environment but > it doesn't really fit very well yet. I'm not sure where we will end up with > this. > > I have a feeling that, if we do that, Geronimo is still a part of OSGI env, > could we make the Geronimo is an OSGI env? > > I don't understand what you are asking here. In the sandbox, geronimo > plugins are running in an osgi enviroment, and all the classes are loaded > from osgi bundles. Could you explain more what you are asking about? > > Could we publish GBeans as OSGI service via a ConfigurationActivator, or > though a GBean-OSGI adapter ? > > I'm pretty sure we could, but I'd like to get more stuff working before we > decide if its a good idea. IIUC blueprint doesn't publish every blueprint > bean as an osgi service, but only ones you configure to be published. I > suspect we may want to, similarly, only publish some gbeans as osgi > services. > My current approach is to try to modify the existing geronimo architecture > relatively little where possible to get it to run in osgi, respecting osgi > architecture. So, I am trying to get stuff working with the kernel as an > osgi service, get the deployers working, etc etc. I think after we have > done this we will have a much better idea what other work we want to try. > For instance, we might not need a kernel at all: possibly gbeans can just > be osgi services with a few extra attributes. > thanks > david jencks > > Thanks ! > > 2009/9/22 Rex Wang <[email protected]> >> >> Yes! hope for detail sharing :-) >> -Rex >> >> 2009/9/22 Jack Cai <[email protected]> >>> >>> David, that's exciting work! >>> >>> It'll be great if you can share some more details. There are a few >>> puzzles that flow around my mind - >>> * Are we just taking OSGi framework in as another plug-in to let it host >>> OSGi applications? Or, vice-versa, we are converting Geronimo into an OSGi >>> application? >>> >>> * If the latter case, will GBean go away? >>> * If yes, how much code changes are required? I'd say a lot ... >>> >>> -Jack >>> >>> On Tue, Sep 22, 2009 at 8:25 AM, David Jencks <[email protected]> >>> wrote: >>>> >>>> Over the weekend I got my sandbox osgi framework to build and generate >>>> all the plugins as osgi bundles. This involves running some of the >>>> geronimo >>>> server on osgi/felix inside maven. The dependency management system seems >>>> to work OK at least for starting bundles. I also started doing a little >>>> bit >>>> of code cleanup. >>>> >>>> I think the next step will be to get the framework server running in >>>> standalone karaf or felix. Hopefully this will be no harder than getting >>>> it >>>> running in embedded felix in maven. >>>> >>>> thanks >>>> david jencks >>>> >>> >> > > > > -- > Ivan > > -- Cheers, Guillaume Nodet ------------------------ Blog: http://gnodet.blogspot.com/ ------------------------ Open Source SOA http://fusesource.com
