Process instance start/end listener

Camunda 7 Topics Discussion & Questions
1

Hi,
Is it possible to create a engine plugin to add listeners on all process instances’ start/complete event?

2

Hi @xuesong_yang,

Here’s an example that shows how to programmatically register an execution listener for a certain type of element: https://github.com/camunda/camunda-bpm-examples/tree/master/process-engine-plugin/bpmn-parse-listener

You can adapt it to register a listener on process start/end.

Cheers,
Thorben

3

Thanks, It helps a lot.

One more question:
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In this simple process’s end execution event listener(DelegateListener#notify(ExecutionEntity entity)), I can NOT query out current HistoricProcessInstance by ExecutionEntity#getProcessEngineServices()#getHistoryService()#createHistoricProcessInstanceQuery()
#processInstanceId(#ExecutionEntity#getProcessInstanceId())#singleResult(). It’s because there is no safepoint to save process state into DB before reach the end event. What I can query out is current ProcessInstance object, whose type is ExecutionEntity. But it does NOT contains #getStartTime and #getStartUserId methods(while the HistoricProcessInstance has). How can I obtain process startTime under this circumstance.

Thanks in advance.

4