JMS trigger is not suspended

Rajkumar_Pannnerselvam · March 24, 2015, 10:31am

Hi All,

I have set the Trigger property, PFB the snapshot.

The service is retried for 3 times siuccessfully and logs are wrriten.
But Trigger needs to be suspended for the above condition but it is enabled.
Kindly help us on this regard.

Note: Resource Monitoring service is set in the trigger (isAvailable = True/False). But Resource monitoring also not invoked here.

Thanks,
Raj

Monica_Sheshanarayana · January 5, 2017, 10:11am

Hi,

Did this issue resolved?
Can you please let us know the what changes done to resolve this.

Thanks,
Monica

Mahesh_K_Sreenivas · January 8, 2017, 6:56pm

Can I have a outline of your trigger flow service. Make sure your flow service follows the service outline described in #41 Building Services that Retry in 9-12_Service_Development_Help.pdf

Monica_Sheshanarayana · January 9, 2017, 8:18am

Hi Mahesh,

I have a jms trigger pointing to queue with some filter condition. The subscribing service mentioned in the trigger will do a http call

Messages are picked and lost if the server is down - i.e. http call returns server down.

I’m trying to build a retry mechanism for trigger along with resource monitoring service. Attached is the screenshot of trigger properties.
The service is successfully retrying but trigger is not suspended at the end.
In the resource monitoring service I’m just setting the isAvailable to ‘false’.

Please suggest if I’m missing anything. why trigger is not suspending?

Sasanka · January 9, 2017, 9:23am

Hello

Could you please share the logic for your trigger service. I hope you have provided sufficient hint for Integration server to retry for the transient errors. if not, please use, pub.flow:throwExceptionForRetry to mark an exception as ISRunTimeException.

Note: IS treats all the exception as serviceException.

Regards
Sasa

Monica_Sheshanarayana · January 9, 2017, 9:53am

Hi ,

Logic of my trigger service.

system · January 9, 2017, 10:11am

Hi,
Change the comparison as retryCount<=maxRetryCount as the count will be 0 for both the values in first run.

Thanks,
Sathya

Monica_Sheshanarayana · January 9, 2017, 10:18am

Thanks Satya. That worked.

system · January 9, 2017, 10:19am

I tired this scenario . But , when i try to activate the trigger I get the below error.

Trigger is locked. Change not permitted

Any idea

Monica_Sheshanarayana · January 9, 2017, 10:25am

Hi,

Now if i change the value of isAvailable=‘true’ and then tried testing it.
It retried and trigger got suspended. For isAvailable=‘true’ trigger should not be suspended?
Is my understanding right?

Thanks,
Monica

Monica_Sheshanarayana · January 9, 2017, 10:26am

Hi Satya,

Trigger locking could be because of ACL issue.

system · January 9, 2017, 10:35am

I guess the service is not avaialble again so it got suspended. Are you hardcoding it as true ?

Sasanka · January 9, 2017, 10:40am

Hello

The resource monitoring service is custom built and is optional.
The resource monitoring service provides output (isAvailable=true) when the required resources for processing are up and running.
Once the resouce monitoring service provides the necessary hint for the Integration Server to resume(isAvailable=true), IS changes the trigger state from Suspended to Active.
Trigger State ( suspended) happened on account of retry mechanism is temporary.
In cluster environment, suspension of trigger in node has no impact on another node…

HTH,
Sasa

Monica_Sheshanarayana · January 9, 2017, 12:26pm

Hi,

I had harcoded ‘isAvailable’. Yes Sasanka you are right, the suspension was temporary which was from retry.
How to delete the resource monitoring thread.
I had removed the entry from trigger properties, but still i could see the task running under system tasks and also could see messages on server log.

Thanks,
Monica

Nitisha_Tambe · May 21, 2018, 1:34pm

I tried to implement same logic but getting below error.

[178]2018-05-21 16:59:06 IST [ISS.0134.0042E] JMS Trigger fOLDER:jms_trigger failed: com.wm.lang.flow.FlowException: [ISC.0049.9009] Missing required property switch at ‘unlabeled BRANCH’

Nitisha_Tambe · May 21, 2018, 1:35pm

Any help will be appreciated.

Yogesh_Bhandari · May 21, 2018, 3:23pm

Check your BRANCH evaluate label property. Set it to true if you want branch on the expressions. Else set it to false, if you want to branch on switch value.

Please check Service development guide for details.

Thanks,
Yogesh

Nitisha_Tambe · May 21, 2018, 3:42pm

Now that error is resolved but i cannot see trigger is suspended. This is my resource monitoring service and configured in trigger. In this service i have configured pub.trigger.resourcemonitoringspec that returns true/false. I make a 3rd party service call and timing out and then bringing up to see if trigger is suspending or not.

Nitisha_Tambe · May 21, 2018, 3:49pm

Also no system task is created in scheduler.