CODEWITHSUNDEEP
mulemule-studio
CAB
CAB

Reputation: 1045

Mule 3 Quartz timer alignment for near real-time processing

I have a processing chain that needs to output data at the top of the second, i.e.

System.currentTimeMillis() % 1000 == 0

within +/- 100 milliseconds. So, I set a Quartz timer as follows;

<quartz:inbound-endpoint repeatInterval="1000" responseTimeout="10000" doc:name="Quartz" jobName="publisher" startDelay="900">
    <quartz:event-generator-job/>
</quartz:inbound-endpoint>

I notice that the time intervals are fairly steady at 1 second spacing, but the alignment within the second is random, probably depending on when the timer first starts. For example, my last test run output times where

System.currentTimeMillis() % 1000 == 449

I surmise the startDelay applies only to the very first interval. I'm also guessing I might tweak timer alignment if I insert a custom interceptor that uses Thread.sleep to occassionaly tweak it. I.e., if it wakes at 449, Thread.sleep(451). Or, I might set quartz to trigger every 50 milliseconds, and use the custom-interceptor to filter out events out of my desired time range.

Is there a cleaner 'purist' approach to getting Mule to do this?

Upvotes: 0

Views: 369

Answers (1)

David Dossot
David Dossot

Reputation: 33413

Replace repeatInterval with a Cron expression that fires every seconds.

According to the syntax supported by Quartz described in the user guide, the following should work: 0/1 * * ? * *

Upvotes: 2

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