[jboss-jira] [JBoss JIRA] Created: (JBCACHE-1392) Use the correct MBeanServer if multiple MBeanServers are present.
Use the correct MBeanServer if multiple MBeanServers are present.
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Key: JBCACHE-1392
URL: https://jira.jboss.org/jira/browse/JBCACHE-1392
Project: JBoss Cache
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: JMX
Reporter: Robert Buck
Assignee: Manik Surtani
The prior bug did not fix the issue of running the cache under jboss when the following
options are present:
set JAVA_OPTS=%JAVA_OPTS% -Dcom.sun.management.jmxremote
The code is presently as follows (which is incorrect, by the way):
{code}
157 List servers=MBeanServerFactory.findMBeanServer(null);
158 if(servers == null || servers.size() == 0)
159 throw new Exception("TreeCacheView.init(): no MBeanServers found");
{code}
TreeCacheView fails to deploy because it is using the wrong MBeanServer. Rather than doing
the above, you should either do something like:
{code}
import org.jboss.mx.util.MBeanServerLocator;
...
// find the local MBeanServer
MBeanServer server = MBeanServerLocator.locateJBoss();
{code}
, or you should do something like this:
{code}
public static MBeanServer getDefaultMBeanServer() {
return findMBeanServer("jboss");
}
private static MBeanServer findMBeanServer(String agentId) {
List servers = MBeanServerFactory.findMBeanServer(null);
if (servers != null && servers.size() > 0) {
for (Object object : servers) {
MBeanServer server = (MBeanServer) object;
if (server.getDefaultDomain().equals(agentId)) {
return server;
}
}
}
return null;
}
{code}
The reason is because with Java 5, when the "-Dcom.sun.management.jmxremote"
switch is turned on, the default platform MBeanServer is the zeroth instance rather than
"jboss".
See:
http://fisheye.jboss.com/browse/JBossCache/core/support-branches/1.4.1.SP...
To test, deploy the tree cache view, and start JBoss with the JAVA_OPTS mentioned above.
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