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https://issues.apache.org/jira/browse/JSPWIKI-452?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Jaquith closed JSPWIKI-452.
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Resolution: Fixed
Fix Version/s: 3.0
Fixed in 3.0.0-svn build 41.
We now register JMX beans using the jspwiki.applicationName as part of the
name. If a JMX bean with that name is already registered, we throw a
RuntimeException.
Not the most graceful thing to do, but then, having more than 1 webapp with
duplicate applicationNames is a recipe for problems anyway. This, at least,
provides a way for the admin to catch this problem and fix it.
> JMX implementation does not support More than one JSPWiki instance
> ------------------------------------------------------------------
>
> Key: JSPWIKI-452
> URL: https://issues.apache.org/jira/browse/JSPWIKI-452
> Project: JSPWiki
> Issue Type: Bug
> Components: Core & storage
> Affects Versions: 3.0
> Environment: JSPWiki 3.0
> Reporter: Harry Metske
> Assignee: Harry Metske
> Priority: Minor
> Fix For: 3.0
>
>
> The current JMX implementation does not handle multiple JSPWiki instances per
> JVM very well.
> This is true for both the new LoggerMBeans as for the other Admin type MBeans.
> The problem is that the ObjectName does not make the MBeans unique.
> Example names:
> JSPWiki:component=Core,name=Core bean
> JSPWiki:component=Loggers,name=com.ecyrd.jspwiki.WikiEngine
> So, depending on the order of startup, JSPWikiA or JSPWwikiB gets the MBean.
> This can be a bit dangerous, you think you reload the Search manager for A,
> but B gets it.
> But apparently we don't have that many users that use both multiple wiki's
> and the JMX.
> I think we need something that makes the MBean names unique. Question is what
> do we use :
> 1. property jspwiki.applicationName ? (still no guarantee)
> 2. context root of webapp (also no guarantee)
> 3. a random string appended, so this would make it like :
> JSPWiki-BGJSKIR:component=Core,name=Core bean, not very elegant
> 4. something perfect, any idea's ?
> The current AdminBeanManager also has a minor bug, saying it registers an
> MBean while it didn't, I'll fix that soon.
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