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From Gary Tully <gary.tu...@gmail.com>
Subject Re: Default JMX Connectors Failover for JDBC Master Slave
Date Wed, 05 Sep 2012 11:11:49 GMT
hmm. I see we already have an issue for the RemoteJMXBrokerFacade  at
https://issues.apache.org/jira/browse/AMQ-2785
vote it up I guess or if you can, submit a patch. All contributions
most welcome.

On 5 September 2012 12:00, Gary Tully <gary.tully@gmail.com> wrote:
> There is no easy solution for this at the moment.
>
> Since https://issues.apache.org/jira/browse/AMQ-2306 both the master
> and slave expose them selves over JMX so both urls will be valid.
> The difference is that only one will report isSlave==false
>
> There is a jmx facade used by the web console that could be useful if
> your client has java code, but it needs some additional smarts to be
> aware of the isSlave attribute on a broker.
>
> Currently it is happy if it finds a broker MBean.
>
> Have a peek at:
> org.apache.activemq.web.RemoteJMXBrokerFacade#createConnection in [1]
>
> Seems like that facade needs to be able to iterate through the list of
> urls or restrict access to just the master. I think it would make a
> sensible enhancement.
>
> [1] http://svn.apache.org/viewvc/activemq/trunk/activemq-web/src/main/java/org/apache/activemq/web/RemoteJMXBrokerFacade.java?view=markup
>
> On 5 September 2012 06:18, Gaurav Sharma <gaurav.cs.sharma@gmail.com> wrote:
>> For the JDBC Master Slave config, just like there exists the Failover
>> Transport for the broker url, what is the best way to specify the JMX
>> hosts in a properties file:
>> jmxUrl=service:jmx:rmi:///jndi/rmi://<host1>:1616/jmxrmi, \
>>            service:jmx:rmi:///jndi/rmi://<host2>:1616/jmxrmi, \
>>            service:jmx:rmi:///jndi/rmi://<host3>:1616/jmxrmi
>>
>> so that I don't have to worry about managing 3 MBeanServerConnection's
>> in my code and then trying to figure which one is the master or which
>> one is alive, re-election, etc? The alternative of managing the three
>> references and error-handling, is just messier.
>>
>> Thanks in advance for the help.
>>
>> -gaurav
>
>
>
> --
> http://fusesource.com
> http://blog.garytully.com



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