Dear Liferay community,
since version 6.2 Liferay features OSGi support, which i am trying to make use of. I don't need to deploy my portlets as OSGi bundles (even though that would be the best), but i do need to access an OSGi service from my (non-OSGi) portlets.
As i am pretty new to both Liferay and OSGi, i started out with this
OSGi tutorial. This left me with three very basic OSGi bundles, that i want to try to reach from my portlet. First, i installed and started the bundles using the Liferay OSGi shell:
START LEVEL 20
ID|State |Level|Name
0|Active | 0|OSGi System Bundle (3.8.0.v20120529-1548)
1|Active | 6|Apache Felix File Install (3.1.10)
2|Active | 1|Apache Felix Declarative Services (1.6.2)
3|Active | 1|osgi.enterprise (4.2.0.201003190513)
4|Active | 1|OSGi Release 4.2.0 Utility Classes (3.2.300.v20120522-1822)
5|Active | 1|Gemini Management (1.0.1.RELEASE)
6|Active | 1|OSGi Release 4.2.0 Services (3.3.100.v20120522-1822)
10|Active | 6|Apache Felix Gogo Command (0.12.0)
11|Active | 6|Apache Felix Gogo Runtime (0.10.0)
12|Active | 6|Apache Felix Gogo Shell (0.10.0)
13|Active | 6|Console plug-in (1.0.0.v20120522-1841)
15|Active | 1|org.example.api (0.0.0)
16|Active | 1|org.example.impls.provider (0.0.0)
18|Active | 1|org.example.impls.command (0.0.0)
But how can i call the service defined in org.example.api from a portlet now? After some searching i found this approach:
BundleContext ctx = FrameworkUtil.getBundle(Greeting.class).getBundleContext();
ServiceReference serviceReference = ctx.getServiceReference(PackageAdmin.class.getName());
PackageAdmin adm = PackageAdmin.class.cast(ctx.getService(serviceReference));
which unfortunately only seems to work within the OSGi context. Now my thought was to call some Liferay service (as they are reachable from the OSGi context) to register the BundleContext, and obtain it within the portlet from the same Liferay service. However, i have no idea if there is some liferay service to do this, or if i could write one myself (how are liferay services made available in the OSGi context?), or if my problem can be solved in a totally different way in the first place.
Any help is much appreciated!
Chris
