How does JBoss 7 check jms message in database?

[ohmygod]

In old version JBoss (4), jms_messages table is used to check the number of requests queued in database, but I cannot see this table any more in database. So how does JBoss 7 do this?

[jbertram]

JBoss AS7 uses HornetQ as its JMS implementation.  HornetQ doesn't store messages in a database, it uses a journal on local disk.  You can use the CLI to check statistics on JMS destinations.

[ohmygod]

Thanks. Can you show me more detailedly how to check the data in the journal on the disk? and where is the journal saved on disk?

[jbertram]

The HornetQ journal is stored in the data directory by default in the messaging* directories.  It uses a binary format and there are no external tools for you to "query" it like you would a database.

If, for example, you want to get the message count for the "testQueue" then connect with the CLI and execute these commands:

cd subsystem=messaging/hornetq-server=default/jms-queue=testQueue
read-attribute message-count

[ohmygod]

I donot see hornetq folder under data, but see messagingbindings, messagingjournal and messaginglargemessages folders. Are they the data folders?

And how to connect with the CLI? can you explain a little more?

[jbertram]

Re-read my last message.  I edited it after I posted it initially.

As far as the CLI goes check the documentation please - https://docs.jboss.org/author/display/AS72/Admin+Guide#AdminGuide-CommandLineInterface.

[ohmygod]

I have connected with CLI, but how to query jms stuff? Are there any commands that can be used for this purpose?

You are disconnected at the moment. Type 'connect' to connect to the server or 'help' for the list of supported commands.
[disconnected /] connect
[standalone@localhost:9999 /]

[nickarls]

[standalone@localhost:9999 /] /subsystem=messaging/hornetq-server=default/jms-queue=testQueue:read-attribute(name="message-count")

{

    "outcome" => "success",

    "result" => 0L

}

[ohmygod]

It works, thanks a lot. Are there other name attributes that I can use to query?

[nickarls]

Try starting jboss-cli -c --gui and browse around

[ohmygod]

I tried this but under extension=org.jboss.as.messaging, there are not much stuff. I also cannot find any name called "message-count" to query.

How to do with this..?

[nickarls]

what does (non-gui)

/subsystem=messaging/hornetq-server=default/jms-queue=testQueue:read-resource(include-runtime="true", include-defaults="true") give?

[ohmygod]

{

    "outcome" => "success",

    "result" => {

        "consumer-count" => 0,

        "dead-letter-address" => "jms.queue.DLQ",

        "delivering-count" => 0,

        "durable" => true,

        "entries" => [

            "queue/test",

            "java:jboss/exported/jms/queue/test"

        ],

        "expiry-address" => "jms.queue.ExpiryQueue",

        "message-count" => 0L,

        "messages-added" => 0L,

        "paused" => false,

        "queue-address" => "jms.queue.testQueue",

        "scheduled-count" => 0L,

        "selector" => undefined,

        "temporary" => false

    }

}

[ohmygod]

There is apparently jms message proceeding in my system, but I used that command and saw no any infomation associated with such MDB besides the information above.

How to check the information related to my custom MDB in my own system?

[nickarls]

You would have to read your own queue in "jms-queue=testQueue"