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Yep, just the few
lines of code should do.
.peter
There is already an example of accessing the
MBeanServer via the RMIAdaptor.
You are looking for a non-external usage example
of the MBeanServer?
xxxxxxxxxxxxxxxxxxxxxxxx
Scott Stark
Chief Technology
Officer
JBoss Group, LLC
xxxxxxxxxxxxxxxxxxxxxxxx
----- Original Message -----
Sent: Thursday, November 14, 2002 3:31
PM
Subject: RE: [JBoss-user] Lookup
MBean
Cool,
Thanks.
We should
probably see about weaving that into the jboss3 book.
.peter
Peter,
For use in
your apps, the correct way is to get a reference to the MBeanServer and
invoke methods on the MBean by passing object name, method name, method
signature stuff to MBeanServer ref.
#1 for use when the calling
code is running in same JVM as MBeanServer: This is some simple code
I wrote to access one of my own MBean from a servlet:
public class
FileSystem {
public static void deleteFilesFromDirectory (String
path, String[] excludedExtentions) {
try
{
Object[] args = new
Object[2];
args[0] =
path;
args[1] =
excludedExtentions;
String[] argClasses
= new String[2];
argClasses[0] =
"java.lang.String";
argClasses[1] =
"java.lang.String[]";
getServer().invoke
(getObjectName(), "deleteFilesFromDirectory", args,
argClasses);
}
catch
(Exception ex) {
}
}
private
static ObjectName getObjectName () throws Exception
{
return new ObjectName
("Tes:service=FileSystemService");
}
private static
MBeanServer getServer () throws Exception {
return
(MBeanServer)MBeanServerFactory.findMBeanServer(null).iterator().next();
}
}
#2 for use when the calling code is running in a different
JVM from the MBeanServer This is an example I wrote to access MBean
from main.
public class Client {
public static void
main (String[] args) throws Exception {
try
{
// Set up jndi
properties
Properties props = new
Properties();
props.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
props.put(Context.URL_PKG_PREFIXES,
"org.jboss.naming:org.jnp.interfaces");
props.put(Context.PROVIDER_URL,
"jnp://localhost:1099");
InitialContext
ctx = new InitialContext(props);
System.out.println ("Got context");
// Retrieve the RMI adaptor, can see this in jmx
console
Object obj =
ctx.lookup("jmx:<machine
name>:rmi");
System.out.println ("Got
RMI Adapter");
ctx.close();
// Wrap it in a
connector
RemoteMBeanServer server = new
RMIConnectorImpl((RMIAdaptor)obj);
// add your code here to call invoke method on server just like
above.
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
}
#3
for calling simple methods on MBeanServer from html. See
implementation of jmx-console.
Hope this
helps.
Greg
Luttrell, Peter wrote:
I have a
custom JMX MBean.
What is
the 'correct' way to look it up for use in my apps (webapps if it
matters)?
I know i
could manually bind it the jndi tree, or create a singleton like
accessor method, but what is considered the 'correct' way to access the
bean?
thanks.
.peter
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information has been obtained or derived from sources believed by us to be
reliable, but we do not represent that it is accurate or complete. Any
opinions or estimates contained in this information constitute our judgment
as of this date and are subject to change without notice. Any information
you share with us will be used in the operation of our business, and we do
not request and do not want any material, nonpublic information. Absent an
express prior written agreement, we are not agreeing to treat any
information confidentially and will use any and all information and reserve
the right to publish or disclose any information you share with
us.
This transmission contains information solely for intended recipient and may be privileged, confidential and/or otherwise protect from disclosure. If you are not the intended recipient, please contact the sender and delete all copies of this transmission. This message and/or the materials contained herein are not an offer to sell, or a solicitation of an offer to buy, any securities or other instruments. The information has been obtained or derived from sources believed by us to be reliable, but we do not represent that it is accurate or complete. Any opinions or estimates contained in this information constitute our judgment as of this date and are subject to change without notice. Any information you share with us will be used in the operation of our business, and we do not request and do not want any material, nonpublic information. Absent an express prior written agreement, we are not agreeing to treat any information confidentially and
will use any and all information and reserve the right to publish or disclose any information you share with us.
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