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From "Claus Ibsen (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CAMEL-5187) JMX issues on WebSphere
Date Wed, 18 Apr 2012 08:01:03 GMT

     [ https://issues.apache.org/jira/browse/CAMEL-5187?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Claus Ibsen resolved CAMEL-5187.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 2.10.0
                   2.9.3

Thanks for the patch. I updated the doc as well.
                
> JMX issues on WebSphere
> -----------------------
>
>                 Key: CAMEL-5187
>                 URL: https://issues.apache.org/jira/browse/CAMEL-5187
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>    Affects Versions: 2.9.1
>         Environment: WebSphere 7
>            Reporter: christian ohr
>            Assignee: Claus Ibsen
>            Priority: Minor
>             Fix For: 2.9.3, 2.10.0
>
>         Attachments: CAMEL-5178.patch
>
>
> While setting up a Camel web application for WebSphere (7) I encountered two issues
> 1. Documentation: the Camel JMX docs proposes the following settings for WebSphere:
> {code}
> <camel:jmxAgent id="agent" createConnector="true" mbeanObjectDomainName="org.yourname"
mbeanServerDefaultDomain="WebSphere"/>
> {code}
> This registers the beans with the PlatformMbeanServer instead of the WebSphere MBean
server. The following setup works better:
> {code}
> <camel:jmxAgent id="agent" createConnector="false" mbeanObjectDomainName="org.yourname"
usePlatformMBeanServer="false" mbeanServerDefaultDomain="WebSphere"/>
> {code}
> 2. For each Camel route, the same Tracer and DefaultErrorHandler MBeans are tried to
be registered over and over again. Because WebSphere changes the ObjectNames on registration,

> {{server.isRegistered(name);}} in {{DefaultManagementAgent#registerMBeanWithServer}}
always returns false, which causes the MBean to be re-registered, which again cause Exceptions,
e.g.
> {code}
> 14:35:48,198 [WebContainer : 4] [] WARN  - DefaultManagementLifecycleStrategy.onErrorHandlerAdd(485)
| Could not register error handler builder: ErrorHandlerBuilderRef[CamelDefaultErrorHandlerBuilder]
as ErrorHandler MBean.
> javax.management.InstanceAlreadyExistsException: org.apache.camel:cell=wdf-lap-0319Node01Cell,name="DefaultErrorHandlerBuilder(ref:CamelDefaultErrorHandlerBuilder)",context=wdf-lap-0319/camelContext,type=errorhandlers,node=wdf-lap-0319Node01,process=server1
> 	at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:465)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.internal_addObject(DefaultMBeanServerInterceptor.java:1496)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:975)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:929)
> 	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
> 	at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:494)
> 	at com.ibm.ws.management.PlatformMBeanServer.registerMBean(PlatformMBeanServer.java:484)
> 	at org.apache.camel.management.DefaultManagementAgent.registerMBeanWithServer(DefaultManagementAgent.java:320)
> 	at org.apache.camel.management.DefaultManagementAgent.register(DefaultManagementAgent.java:236)
> ...
> {code}
> The web application starts up, but with a lot of exceptions in the log.
> Proposal:
> Instead of using a Set<ObjectName> for mbeansRegistered, use a Map<ObjectName,
ObjectName> where the key is the "Camel" ObjectName and the value is the actually deployed
ObjectName.
> I will provide a patch that illustrates the idea.

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