On Oct 23, 2005, at 8:10 PM, Sachin Patel wrote:
David Jencks wrote:
On Oct 22, 2005, at 7:05 PM, Sachin Patel wrote:
Is there a way to load a "loaded configuration's" gbeans' without
starting the configuration? I'm basically wanting query a gbean's
persistent attribute value on a loaded but not started
configuration. Looking through the code the configuration's gbeans
are loaded only after its containing configuration is started
kernel.startGBean(configName);
kernel.invoke(configName, "loadGBeans", new Object[]
{attributeStore}, new String[]
{ManageableAttributeStore.class.getName()});
This makes sense, but I'm wondering if there is an alternate way to
get the gbeans attribute values on an already deployed and
serialized configuration.
I don't think we can do better at this point. There is no limit on
the complexity of attribute values, and the only restriction other
than serializablitly is that classes used must be loadable by the
configuration's classloader. This classloader is only available when
the configuration gbean is started.
If you're willing to use the kernel methods directly rather than the
methods on ConfigurationManager (I recommend sticking to using the
ConfigurationManager) you could pass your own
ManageableAttributeStore in that gets all the gbean datas and return
an empty list. This would result in you getting the gbean datas and
no gbeans getting loaded.
Why do you want to avoid loading the gbeans?
Well I was looking into the shutdown script a little this weekend and
we need to be able to shutdown the correct kernel if multiple server
instances are running. In order to do so we need to get the correct
port number from the RMIRegistry gbean in order to be able to connect
to and shutdown the correct kernel. So I launched a temp kernel and
loaded the RMINamingConfiguration. From there, starting that
configuration fails since the RMIRegistry gbean's port number is
already in use. So I was looking a way to bypass starting the
configuration and to just be able to load that particular gbean and
get its "port" attribute. From there I can put togather the correct
uri, create a kernel delegate and shut it down.
thanks
david jencks
???
Sachin
