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| mquser925 |
 Posted: Fri Jun 06, 2008 6:50 am Post subject: QALIAS in the header? |
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Acolyte
Joined: 22 Apr 2008
Posts: 61
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Hi all,
I am creating qaliases to reference a local Q and I ma wondering if the qalias that was used is located anywhere in the message header. I looked at the message with amqsbcg but I did not see the qalias anywhere. Is it possible to get the qalias used once the message is on the local queue? I am trying to cut back on the number of queues needed.
Reason that I am asking is that I've got 1000 queue managers connecting to my cluster and 10 queues per QM so I am trying to lighten the load by aliasing all 10 to the same queue. But I need to be able to distinguish which queue alias the message came from. |
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| Gaya3 |
| Posted: Fri Jun 06, 2008 8:10 am Post subject: Re: QALIAS in the header? |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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| mquser925 wrote: |
I am creating qaliases to reference a local Q and I ma wondering if the qalias that was used is located anywhere in the message header.
I looked at the message with amqsbcg but I did not see the qalias anywhere. Is it possible to get the qalias used once the message is on the local queue? I am trying to cut back on the number of queues needed.
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QALIAS is just a nick name and its not a real queue, it can point to another queue which should be a Real queue
it wont present in the Message header.
mainly QALIAS is used to hide the details of main business/application queues (in order to avoid Accidental deletion or corruption of the queues)
AFIK you wont get the QALIAS name from the local queue
Regards
Gayathri
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Gayathri
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| mquser925 |
| Posted: Fri Jun 06, 2008 8:29 am Post subject: |
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Acolyte
Joined: 22 Apr 2008
Posts: 61
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| What about when the application is putting the message to the queue? Do they have the option of specifying any additional information in the header like message format? |
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| Michael Dag |
| Posted: Fri Jun 06, 2008 9:26 am Post subject: |
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Jedi Knight
Joined: 13 Jun 2002
Posts: 2607
Location: The Netherlands (Amsterdam)
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| mquser925 wrote: |
| What about when the application is putting the message to the queue? Do they have the option of specifying any additional information in the header like message format? |
Today you could do that from an application by using an RFH2 header, but not all receiving applications can properly handle an RFH2 header.
If you hold on a little longer, 2-3 weeks from now...
V7 will be available and this can be addressed but still needs to be explicitly coded in the application by using Message Properties 
I have not tested this yet, but I believe message properties will be "lost" when mixing of V7 with V6 environments occur.
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Michael
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| fjb_saper |
| Posted: Fri Jun 06, 2008 2:24 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20768
Location: LI,NY
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| Michael Dag wrote: |
V7 will be available and this can be addressed but still needs to be explicitly coded in the application by using Message Properties
I have not tested this yet, but I believe message properties will be "lost" when mixing of V7 with V6 environments occur. |
You can configure it so that it automatically converts the properties into an RFH2 when downshifting to V6. 
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