[Springframework-developer] Using MBeans with JmxMBeanAdapter

[Seth L. <set...@gm...>]

Hello,

What's nice about JmxMBeanAdapter is that it's an easy way to say
"Please take this bean and register it with the MBean Server".  For
normal beans, it's also nice because it'll make a ModelMBean out of
the normal bean, before registration.

This could be a bit more flexible, though.  JmxMBeanAdapter should
recognize if the bean is already a DynamicMBean.  If it is, it should
not get wrapped in a ModelMBean (since it already is an MBean).

The act of turning Spring Beans into MBeans and the act of registering
MBeans with the server (and unregistering at shutdown) might be
decoupled.  This way, one chunk of code creates MBeans from non
mbeans, and another chunk of code does all the registering and
unregistering of MBeans (including those that didn't need to get
converted in the first place).

I added a quick if (bean instanceof DynamicMBean) check in
JmxMBeanAdapter, but the refactoring seems like it'll help split these
two concerns.

The JMX code is going to be a real killer feature for Spring!
Seth