Question about durable subscription setup

[hchirino]

Original post by : Brian Weaver <[e-mail]>


Hi All,

I've been trying to come up to speed on JBoss, espicially the MQ
part of JBoss. To that end I've actually downloaded the source from
CVS, built it, attempted to configure it, and made RPMs to install
it for testing.

The main problem I'm having right now it a lack of documentation.
I'm working from the HEAD of the CVS tree and I cannot seem to get
queue persistance working for some reason. I've gotten JBossMQ running
and passing messages for both a queue and two topics, however the queue
connection should be setup with persistance. I'm not seening anything
written to the file system for the queue in the db directory or
any of its subdirectories.

I started trying to figure out the format of the jbossmq-state.xml
file, and as best I can figure it has the following tag hierarchy:

StateManager
|
- User
|
|- Name
|- Password
|- Id
- DurableSubscription
|
|- Name
- TopicName

From the manual that I've read at
http://www.jboss.org/online-manual/HTML/ch08s07.html
I'm left in the dark about just what the fields are and/or how their used. For
example
if I create a user with a password, how do I pass that information to JBossMQ
when
opening a connection to the MQ server.

And I'm really clueless about the DurableSubscription and child fields. I could
probably
figuer it out an a week or two by going through the code, but I'd prefer to keep
testing
my application, while learning jboss instead of having to do a mental context
switch to
JBossMQ and/or search for another MQ server.

In Short.... "Help!"

Thanks

Weave

[hchirino]

> From the manual that I've read at
> http://www.jboss.org/online-manual/HTML/ch08s07.html
> I'm left in the dark about just what the fields are
> and/or how their used. For
> example
> if I create a user with a password, how do I pass
> that information to JBossMQ
> when
> opening a connection to the MQ server.
>

To connect the MQ server with a userid/password, you use the TopicConnectionFactory.createTopicConnection(String userid, String password) method.

> And I'm really clueless about the DurableSubscription
> and child fields. I could

Once connected as a user id, he may have multiple durable subscriptions that map to different topics. So in otherwords, each user has his own mapping of subscription names to topics. So if the client sets up a new subscription, it will get added as a durable subscription entry under his userid. This is how we keep track of the fact that we need to store all the message on a topic for a specific user.

Make senese???


Regards,
Hiram