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| Gideon |
 Posted: Mon Dec 03, 2012 8:44 am Post subject: WMQ and SCADA |
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Chevalier
Joined: 18 Aug 2009
Posts: 403
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I understand that SCADA is not supported in WMB 7 and higher, but requires WMQ to handle that.
IF so, how can WMB be used to transform a MQTT message ? |
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| lancelotlinc |
| Posted: Mon Dec 03, 2012 8:54 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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| Gideon |
| Posted: Mon Dec 03, 2012 9:41 am Post subject: |
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Chevalier
Joined: 18 Aug 2009
Posts: 403
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Thanks. I read the scenario and it basically says upgrade everything, and use an MQInput instead of a SCADA input node.
How does that work uord. Does MQInput determine if the message is in JMS or MQTT format and proceed. Is the v3 MQTT the same as a JMS message (highly doubtful). Any ideas |
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| mqjeff |
| Posted: Mon Dec 03, 2012 9:44 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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The MQTT functions in the queue manager convert the incoming messages into MQ messages and put them on real MQ queues, where they can be read by MQInput node as MQ messages.
Alternately you can configure a JMSInput node to use the MQTT client libraries and make an MQTT connection to the MQTT infrastructure and receive messages that way - as JMS messages. |
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| lancelotlinc |
| Posted: Mon Dec 03, 2012 9:53 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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| mqjeff |
| Posted: Mon Dec 03, 2012 9:56 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| lancelotlinc wrote: |
| mqjeff wrote: |
| MQInput node as MQ messages. |
WORD ! |
At least, as I understand it. I could entirely be wrong. |
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| andypiper |
| Posted: Tue Dec 04, 2012 6:28 am Post subject: |
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Acolyte
Joined: 29 Oct 2001
Posts: 59
Location: London
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| Ensure that your MQTT topic is mapped to deliver messages to an MQ queue and point your MQInput node at it. Your message flow will receive an MQ message (the body will be a bitstream) |
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| Gideon |
| Posted: Wed Dec 05, 2012 1:35 pm Post subject: |
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Chevalier
Joined: 18 Aug 2009
Posts: 403
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| Can WMQ messages be sent to MQTT messages ? |
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| mqjeff |
| Posted: Wed Dec 05, 2012 1:58 pm Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| I believe an MQ application can publish a message to a topic that has an MQTT destination. |
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| andypiper |
| Posted: Thu Dec 06, 2012 1:17 am Post subject: |
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Acolyte
Joined: 29 Oct 2001
Posts: 59
Location: London
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| Gideon wrote: |
| Can WMQ messages be sent to MQTT messages ? |
Yes.
If you have the MQXR component / MQTT configured on your queue managers, any WMQ messages published to a topic will be available to MQTT clients subscribed to the same topic. |
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