Camunda Executionlistener implementation with timestamp

Question

hey guys im very new to camunda, i want to measure the execution time for my process from start to end but i can't find a proper coding example for the listener. All i could come up with is

public void notify (DelegateExecution execution) throws Exception {

    // What happens when Start Event is executed
    long startTime = System.currentTimeMillis();

    // What happens when token has reached End Event
    long stopTime = System.currentTimeMillis();
    long elapsedTime = stopTime - startTime;
    System.out.println(elapsedTime);
    }

i set the class in the modeler for the start and end event which i hope is right.

Thanks in advance :)

Answer 1

The engine measure for you. But you can't print the duration of a process instance with a listener into the process, because the process instance is still running. You can check the duration in the database table act_hi_procinst.

Also you can use the HistoryService from the engine:

public class ProcessInstanceHistory {

@Inject
HistoryService historyService;

public List<HistoricProcessInstance> historicProcessInstances() {
    return historyService.createHistoricProcessInstanceQuery().list();
}

public void printDurations() {
    for (HistoricProcessInstance historicProcessInstance : historicProcessInstances()) {
        System.out.println("elapsedTime :" + historicProcessInstance.getDurationInMillis());
    }
}
}