Well, it really depends on what you what to do with the destination
information.
You could use the ObjectName to query the mbeanserver to obtain stat
info about that particular destination.
I think the Destination Object Name contains the Destination attribute,
which is actually the destination name. So you can easily extract that
and create an actual destination object to send messages to:
String name = // Get destination name via ObjectName;
ActiveMQQueue q = new ActiveMQQeuue(name);
// Send message to q
Destinations are really just routing information anyways.
Hope this helps.
new2activemq wrote:
I was able to access the getTopics method of BrokerViewMBean by using the
"invoke" method on a MBeanServerObject. However, the problem now is that the
getTopics() method returns an ObjectName[] however the "invoke" method I
used does not expect an ObjectName[]. If I try simple casting the error goes
away, but the information is not useful anymore. Is there a workaround for
this? Thanks for all the help!
Adrian Co wrote:
You have to use JMX to access it and enable JMX in activemq.
http://java.sun.com/j2se/1.5.0/docs/guide/jmx/tutorial/tutorialTOC.html
new2activemq wrote:
Thanks! That really helps me in putting the effort in the right
direction. I
think in my environment we fall under the second cateogory mentioned
below -
we are accessing remote broker. Also, in my JMX console window... under
"org.apache.activemq" --> "localhost" --> "Broker" --> "Info" I can see
the
MBean Java Class = org.apache.activemq.broker.jmx.BrokerView. The
BrokerView
implements BrokerViewMBean. The problem that I am having now is that I
don't
know how access the BrokerView object? Am I missing something obviously
simple here? Any guidance on this will be very helpful. Thanks!
Adrian Co wrote:
IMO, using BrokerService.getDestinations() will only work when you are
using embedded brokers. I.e. you are deploying the JMS broker inside
your app and you have access to the BrokerService object.
If you want to access a remote broker (i.e. if you run it via
./activemq), you need to use JMX and call the getTopics, getQueues, etc
of the BrokerViewMBean.
Hope that helps.
new2activemq wrote:
James,
thanks a lot for your help below. i was actually able to try the list()
method and it lists everything that's in my jndi.properties file. i
think
the reason is that my InitalContext in the first place does a 'lookup'
in
the jndi.properties file.
however, lets say my activemq broker is running and thru the jmx
console
i
add a new topic on the fly - this new topic name will NOT be in my
jndi.properties. however, yes - it does now exist on the broker. so to
work
in this scenario, i'm trying to get a list of destinations that are
active
directly from the broker.
in interface Broker there is a method called getDestinations() - some
of
the
classes that implement this interface, for example BrokerBroadcaster,
RegionBroker, etc. "may help" me in doing what i want to do... but i'm
not
sure exactly how to use them... any ideas? class BrokerService also has
a
getDestinations() method.
the problem i'm having is that when invoke the getBrokerName() method
of
class BrokerService, it returns a "null". because its a null i am not
sure
how to proceed further.
on the other hand, when i invoke the getBrokerURL() method of class
ActiveMQConnectionFactory - it does return the expected result:
"tcp://localhost:61616
any further guidance from you on how i may accomplish my task with the
above
information (or any other which i may be missing) will be highly
appreciated.
Thanks!
James.Strachan wrote:
try the JNDI javadoc
http://java.sun.com/j2se/1.5.0/docs/api/javax/naming/InitialContext.html#list(java.lang.String)
or a Sun tutorial on JNDI
On 3/22/07, new2activemq <[EMAIL PROTECTED]> wrote:
Hi,
I am trying to write a debug tool where as a user, I do not know the
topicNames that exist. Normally, if I knew the topic name, I could
just
do
this:
myContext.lookup(jndiName)
where jndiName is the topicName
Is there a way I can pass in an argument, or a wildcard argument that
will
look up all the topicNames that exist? Or is it possible that there
is
an
all different way to do this?
Any help will be greatly appreciated.
Thanks!
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