[incubator-kie#7147] NullPointerException in embedded job service whe…

[abhijithumbe]

…n sladuedate format is not correct for the usertask node

Issue: (#7147)

[martinweiler]

Thanks for the PR @abhijithumbe ! I have a couple of questions:

1. I understand we are not trying to address the NPE directly, but rather eliminate the conditions when it could happen, correct?
2. The fix targets Human Tasks / workItemNodes - what about other node types?
3. What about process level SLAs?
4. What happens if user provide an incorrectly formatted date via #{slaVariable}?

[abhijithumbe]

Hi @martinweiler,

1. yes.
2. Added SLA validation for other nodes.
3. Added SLA validation for process level SLA
4. If expression resolution failed I can see a clear SLA parsing error instead of NPE while starting process instance.

|ERROR||io.undertow.request.io|Exception handling request 2216f728-17e9-46e7-94a4-a4667430567a-1 to /TestProcess: org.jboss.resteasy.spi.UnhandledException: java.lang.RuntimeException: Error parsing time string: [ 2026-10-01T18:00:00Z ]
	at org.jboss.resteasy.core.ExceptionHandler.handleApplicationException(ExceptionHandler.java:107)
	at org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java:344)
....
Caused by: java.lang.RuntimeException: Error parsing time string: [ 2026-10-01T18:00:00Z ]
	at org.drools.base.time.TimeUtils.parseTimeString(TimeUtils.java:127)
	at org.jbpm.process.core.timer.DateTimeUtils.parseDuration(DateTimeUtils.java:84)
	at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.configureSLATimer(WorkflowProcessInstanceImpl.java:594)