Thanks again. These articles are very clear and simple.
They do raise a couple questions, though.
In the first article, no mention is made of an mbeans-descriptor.xml
file. It's all done programatically in the first article - which might
be fine for my needs. The Tomcat documentation does make it sound as
though you can drop the xml file into your MBean package directory and
something provided by Tomcat picks it up and makes the MBean accessible,
but it now seems that this is not the case.
The second article shows code to read these XML files (
CommonsModelMBeanDemonstrator.applyCommonsModeler() ) which leads me to
ask whether Tomcat comes with commons-modeler support built-in or
whether this must be added manually as in this sample.
Anyway, it appears that there are two approaches here
1 - do everything programatically, in which case the .xml file isn't needed
2 - use the commons-modeler xml-file approach (question remains what
support, if any, Tomcat provides for this).
Do I have this right?
H. Hall wrote:
Steve Cohen wrote:
Let me ask my question a little more directly:
Does the presence of a descriptor cause instantiation of an instance
of an MBean
or do I have to write code to create a server-side instance of my
MBean and if so, where should this code reside
or is there some configuration artifact that causes this
instantiation to happen?
Why don't you take a look at these two articles:
http://today.java.net/pub/a/today/2005/11/15/using-jmx-to-manage-web-applications.html?page=1
http://marxsoftware.blogspot.com/2008/07/jmx-model-mbeans-with-apache-commons.html
If you use the NetBeans IDE you might be interested in the JMX plugin
for NB. Here is a link to a tutorial "Getting Started with JMX
Monitoring in NetBeans IDE 6.0"
http://www.netbeans.org/kb/60/java/jmx-getstart.html
cheers,
HH
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