Way to detect task interruption/cancel

Camunda 7 Topics Discussion & Questions
1

Is there any way I can find out from DelegateExecution object available at the time of event listeners getting fired, whether a task was interrupted/ cancelled
For example when a task is cancelled upon an interrupting timer firing

2

Hi @asarvaiya,

You can check Execution Listeners.
Hope it will help you.

Best regards,
Yana

3

Hi @asarvaiya

You could use a TaskLister and listen to DELETE Event of Task.
If a Task is completed by a user it will only fire the COMPLETE Event but if it is interrupted, for example by a timer event, it will fire the DELETE Event.

Best regards,

Markus

4

I am using Execution Listener. Is there any way to find out if the event was a DELETE from the DelegateExecution object which is passed as argument to the notify method of the ExecutionListener.

5

Hi

you could try this:

((ExecutionImpl)delegateExecution).getDeleteReason() != null

But I am not 100% sure.

You should give it a try.

Best regards,

Markus

6

This does not seem to work since the execution is not instanceof ExecutionImpl
Is there any other way to detect the task cancellations

7

Hi Yana
I am using execution listener and my question was how to detect interruptions/cancellation of a task when in the notify method of execution listener.

8

Hi @asarvaiya

Then try to cast it to org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl. See attached type hierarchy. DelegateExecution has to be type of this class.

It also supports a getDeleteReason method.

08

9

Actually I found that DelegateExecution has a function called isCanceled()
This will directly indicate if the task was cancelled

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