I have started to contribute a set of interfaces that describe runtime metadata exposed by a portlet.

The word portlet here is to take with care as it can be a portlet container or an instance that points to a portlet container and is exposed. In particular an instance would return the same data as the portlet container it points to would but with a specialization (preferences).

The package is org/jboss/portal/portlet/info/*

Then later this information will be exposed by the portlet invocation bus.