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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Suggestions for reprocessing MQTT messages

Suggestions for reprocessing MQTT messages

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dean

Posted: Fri Jun 05, 2009 11:53 am Post subject: Suggestions for reprocessing MQTT messages

Novice

Joined: 29 May 2009
Posts: 15

I'm looking for suggestions on how to save ScadaInput (MQTT) messages to a text file and then have a way to run them through the workflow again later. One thought I had was to route the ScadaInput node to a queue and then feed the workflow from the queue. The workflow would need to save messages to a file. Then to reprocess the messages, I would need a way to load the messages back from the file into the queue.

Any suggestions or examples would be helpful. Is there a better way?

mqjeff

Posted: Fri Jun 05, 2009 12:03 pm Post subject:

Grand Master

Joined: 25 Jun 2008
Posts: 17447

Why do they need to go to a file first? Why can't you put them on a queue instead?

Why can't you use TimeoutControl/TimeoutNotification to retry?

dean

Posted: Fri Jun 05, 2009 12:18 pm Post subject:

Novice

Joined: 29 May 2009
Posts: 15

I'm used to troubleshooting with log files. I could just as easily view the messages from a queue and then move them to another queue to be reprocessed.

Is there a way to archive queue data to a file? I would like to keep at least 1 month of data available to reprocess if necessary.

mqjeff

Posted: Fri Jun 05, 2009 12:22 pm Post subject:

Grand Master

Joined: 25 Jun 2008
Posts: 17447

You really don't want to write data to files.

You really want to archive your messages into a database, with an automatic management policy to clean up old rows.

Then it will be much cleaner to extract a specific message, and replay it specifically.

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