Alfresco workflow get triggered multiple times - alfresco

Question

I am facing problem in triggering workflow.
I have applied rule on a Folder
Definition of rule :
i) When Item are created on enter this folder
ii) Name End With .xml
iii)Execute Script
Script is
function startWorkflow()
{
var workflow = actions.create("start-workflow");
workflow.parameters.workflowName = "activiti$Excel_initial_service";
workflow.parameters["bpm:workflowDescription"] = "Excel initial service workflow for : " + document.name;
var futureDate = new Date();
futureDate.setDate(futureDate.getDate() + 1);
workflow.parameters["bpm:workflowDueDate"] = futureDate;
return workflow.execute(document);
}
function main()
{
startWorkflow();
}
main();
and my workflow definition is
<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
<process id="Excel_initial_service" name="Excel Initial Service" isExecutable="true">
<startEvent id="startevent1" name="Start"></startEvent>
.
.
.
.
<serviceTask id="servicetask1" name="Service Task" activiti:class="*"> </serviceTask>
.
.
.
.
The problem i am facing is service task is getting triggered multiple times for single file entered in the folder and its not getting stopped.
<?xml version="1.0" encoding="UTF-8"?>
<process id="***" name="Excel Generation Service" isExecutable="true">
<startEvent id="starteventexcel1" name="Start"></startEvent>
<intermediateCatchEvent id="timerintermediatecatcheventexcel1" name="TimerCatchEvent1">
<timerEventDefinition>
<timeDuration>PT10S</timeDuration>
</timerEventDefinition>
</intermediateCatchEvent>
<serviceTask id="servicetaskexcel1" name="Service Task" activiti:class="***"></serviceTask>
<intermediateCatchEvent id="timerintermediatecatcheventexcel2" name="TimerCatchEvent2">
<timerEventDefinition>
<timeDuration>PT10S</timeDuration>
</timerEventDefinition>
</intermediateCatchEvent>
<endEvent id="endeventexcel1" name="End"></endEvent>
<sequenceFlow id="flowexcel1" sourceRef="starteventexcel1" targetRef="timerintermediatecatcheventexcel1"></sequenceFlow>
<sequenceFlow id="flowexcel2" sourceRef="timerintermediatecatcheventexcel1" targetRef="servicetaskexcel1"></sequenceFlow>
<sequenceFlow id="flowexcel3" sourceRef="servicetaskexcel1" targetRef="timerintermediatecatcheventexcel2"></sequenceFlow>
<sequenceFlow id="flowexcel4" sourceRef="timerintermediatecatcheventexcel2" targetRef="endeventexcel1"></sequenceFlow>
</process>

Answer 1

The first intermediateCatchEvent here will execute your service task every 10 sec. Why using it?

Answer 2

this answer may this will help you.
The class to use is the ClockUtil which changes the internal clock of the engine.
That being said, I checked your test and I saw that you are using the
ProcessEngine eng = ProcessEngineConfiguration
.createStandaloneInMemProcessEngineConfiguration()
.buildProcessEngine();
To get the process engine. That will give you a default engine, with the job executor disabled. The job executor is needed for timer execution. Add following line to building the process engine to make it work:
setJobExecutorActivate(true);
You can refer this question https://community.alfresco.com/thread/219801-problem-with-intermediatecatchevent
you will find some code on github as explained in above referred question https://github.com/Activiti/Activiti/blob/master/modules/activiti-engine/src/test/java/org/activiti/engine/test/bpmn/event/timer/IntermediateTimerEventTest.java