getting notification when JMS clients disconnects ?

[fillg1]

Hi folks

We have an JEE application running von EAP 6 / Jboss 7. Our clients are communicating with the JBoss by JMS only.

Is it possible to get a kind of server notification when a client is disconnecting or crashes ?

In the JBoss server.log we see some information

2013-08-21 14:33:45,490 ERROR [org.jboss.remoting.remote.connection] [] (Remoting "NodeHW0786" read-1) JBREM000200: Remote connection failed: java.io.IOException: Eine vorhandene Verbindung wurde vom Remotehost geschlossen

2013-08-21 14:33:45,525 INFO  [org.jboss.as.naming] [] (Remoting "NodeHW0786" task-4) JBAS011806: Channel-Endbenachrichtigung erhalten, schließe Channel Channel ID 61a98314 (inbound) of Remoting connection 200da416 to null

2013-08-21 14:35:25,360 WARN  [org.hornetq.core.protocol.core.impl.RemotingConnectionImpl] [] (hornetq-failure-check-thread) Connection failure has been detected: Did not receive data from /10.10.2.76:65408. It is likely the client has exited or crashed without closing its connection, or the network between the server and client has failed. You also might have configured connection-ttl and client-failure-check-period incorrectly. Please check user manual for more information. The connection will now be closed. [code=3]

2013-08-21 14:35:25,363 WARN  [org.hornetq.core.server.impl.ServerSessionImpl] [] (hornetq-failure-check-thread) Client connection failed, clearing up resources for session bbd39aa9-0a5d-11e3-902b-c5ad31cc537e

2013-08-21 14:35:25,365 WARN  [org.hornetq.core.server.impl.ServerSessionImpl] [] (hornetq-failure-check-thread) Cleared up resources for session bbd39aa9-0a5d-11e3-902b-c5ad31cc537e

2013-08-21 14:35:25,366 WARN  [org.hornetq.core.server.impl.ServerSessionImpl] [] (hornetq-failure-check-thread) Client connection failed, clearing up resources for session bbd3e8cb-0a5d-11e3-902b-c5ad31cc537e

2013-08-21 14:35:25,375 WARN  [org.hornetq.core.server.impl.ServerSessionImpl] [] (hornetq-failure-check-thread) Cleared up resources for session bbd3e8cb-0a5d-11e3-902b-c5ad31cc537e

Is it possible to get this information programmatically ?

Regards

Michael

[mnovak]

Hi Michael,

check HornetQ user guide [1] and management notification example [2] which is in HornetQ project on github [3]. There is notification when consumer or producer is closed:

Received notification:
  _HQ_NotifType: CONSUMER_CLOSED
  JMSXDeliveryCount: 1
  _HQ_RemoteAddress: /127.0.0.1:48974
  _HQ_Address: jms.queue.exampleQueue
  _HQ_Distance: 0
  _HQ_FilterString: null
  _HQ_ConsumerCount: 0
  _HQ_SessionName: e91d06f3-0a72-11e3-bcaf-89f578305d0e
  _HQ_RoutingName: jms.queue.exampleQueue
  _HQ_NotifTimestamp: 1377097615492
  _HQ_User: null
  _HQ_ClusterName: jms.queue.exampleQueue75993875-0a6f-11e3-98eb-619d8159ae8f

It's possible to read such notification as messages from notificationsTopic in MDB/EJB deployed in server or standalone JMS client.

Cheers,

Mirek

[1] http://docs.jboss.org/hornetq/2.3.0.Final/docs/user-manual/html_single/index.html#management.notifications

[2] http://docs.jboss.org/hornetq/2.3.0.Final/docs/user-manual/html_single/index.html#examples.management-notifications

[3] https://github.com/hornetq