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From "Gary Tully" <gary.tu...@gmail.com>
Subject Re: when building a broker in java, having issues with ManagementContext and NetworkConnector
Date Wed, 10 Sep 2008 15:17:20 GMT
there may well be an ordering problem here but also consider
 BrokerService broker = ...
 broker.getManagementContext().setCreateConnector(false);

to see the call in context, check out a unit test that configures
multiple brokers, eg:
http://svn.apache.org/viewvc/activemq/trunk/activemq-core/src/test/java/org/apache/activemq/network/NetworkLoadTest.java?view=markup

2008/9/9 Thomas R. Corbin <thomas.corbin@gmail.com>:
>
> It seems like I have to create the NetworkConnector first or it messes up the
> ManagementContext.
>
> But if I do create the NetworkConnector first, it *seems* like it creates a
> ManagementContext on it's own and it uses the default port (1099).  But I
> already have another broker on the machine using 1099 for the jmx port.
>
> I'm kind of confused at how I get these two objects constructed in the right
> way, since they both *seem* to depend on each other.
>
> Or maybe it's not the port, maybe it's the broker name?
>
> java.rmi.server.ExportException: internal error: ObjID already in use
>        at sun.rmi.transport.ObjectTable.putTarget(ObjectTable.java:169)
>        at sun.rmi.transport.Transport.exportObject(Transport.java:74)
>        at
> sun.rmi.transport.tcp.TCPTransport.exportObject(TCPTransport.java:229)
>        at
> sun.rmi.transport.tcp.TCPEndpoint.exportObject(TCPEndpoint.java:393)
>        at sun.rmi.transport.LiveRef.exportObject(LiveRef.java:129)
>        at
> sun.rmi.server.UnicastServerRef.exportObject(UnicastServerRef.java:190)
>        at sun.rmi.registry.RegistryImpl.setup(RegistryImpl.java:92)
>        at sun.rmi.registry.RegistryImpl.<init>(RegistryImpl.java:78)
>        at
> java.rmi.registry.LocateRegistry.createRegistry(LocateRegistry.java:186)
>        at
> org.apache.activemq.broker.jmx.ManagementContext.createConnector(ManagementContext.java:365)
>        at
> org.apache.activemq.broker.jmx.ManagementContext.findMBeanServer(ManagementContext.java:293)
>        at
> org.apache.activemq.broker.jmx.ManagementContext.getMBeanServer(ManagementContext.java:148)
>        at
> org.apache.activemq.broker.BrokerService.registerNetworkConnectorMBean(BrokerService.java:1442)
>        at
> org.apache.activemq.broker.BrokerService.addNetworkConnector(BrokerService.java:328)
>        at
> org.apache.activemq.broker.BrokerService.addNetworkConnector(BrokerService.java:280)
>        at
> org.apache.activemq.broker.BrokerService.addNetworkConnector(BrokerService.java:256)
>
> --
> Card #1. Uncle Bob's Three Laws
>
> • Write no production code except to pass a failing test.
> • Write only enough of a test to demonstrate a failure.
> • Write only enough production code to pass the test.
>
>

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