On 8/23/07, lightbulb432 <[EMAIL PROTECTED]> wrote:
>
>
> What is the preferred API for accessing MBeans from within servlets or
> JSPs?
>
> MBeanServerConnection jmxServerConnection = JMXConnectorFactory.connect
> (new
> JMXServiceURL(urlForJMX),null).getMBeanServerConnection();
> jmxServerConnection.getAttribute(new
> ObjectName("Application:Name=Server,Type=Server"),"myAttribute");
This code can connect to an MBeanServer which need not be in the same JVM
as your Servlet and you may need to provide authorization credentials to get
connected.
OR
>
> MBeanServer server = (MBeanServer)
> MBeanServerFactory.findMBeanServer(null).get(0);
> AttributeList list = server.getAttributes(new
> ObjectName("Application:Name=Server,Type=Server"),"myAttribute");
This code looks up MBeanServers in the same JVM as your Servlet.
They both have roughly the same amount of code and do the same thing, so I'm
> wondering which is the preferred way. Unfortunately, you can't really
> abstract away the mechanism of getting the MBeanServer because one uses a
> MBeanServer while the other way uses the MBeanServerConnection object from
> which to perform other methods.
>
> The only tradeoff I can see is that the first way requires knowing the JMX
> connection URL which may need to be changed if, for example, the JXM port
> number is changed. However, the second way may return multiple
> MBeanServers,
> right?
>
> In the second way, would you ever expect a List with more than one
> MBeanServer to be returned? If so, how would that happen, and how would
> your
> code deal with it?
>
> Thanks.
>
>
>
> lightbulb432 wrote:
> >
> > How, from a web application deployed to Tomcat, can you customize the
> > behavior of your web application based on attributes specified in an
> > MBean? The link http://tomcat.apache.org/tomcat-6.0-doc/monitoring.html
> > talks a lot about Ant tasks, but that's not really what I'm looking to
> do.
> >
> > How can you get programmatic access to MBeans? And how do you deploy
> > MBeans to Tomcat?
> >
> > I'm pretty confused here...hopefully someone can clarify. Thanks.
> >
>
> --
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> http://www.nabble.com/Use-JMX-to-manage-applications-tf3978363.html#a12297804
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>
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