topic Repeating Timers Ignoring Intervals in Alfresco Archive

Repeating Timers Ignoring Intervals

ms1 — Thu, 27 Aug 2015 13:52:07 GMT

Hello All,I have a problem with a repeating timer. I want to send out a reminder email for a task at a specified interval : 3 total at 3 day intervals … so for the time cycle, I have R3/P3D.What happens is that I get the first email in 3 days (as expected) and then the 2nd and 3rd emails are trigger

Re: Repeating Timers Ignoring Intervals

vasile_dirla — Thu, 27 Aug 2015 20:22:30 GMT

Hi,
This happens only in the combination with the email task or it also happens with other taks (scripts, service…)
please provide a zip (rename it as txt before uploading) with one of your experiments (a unit test to show this behaviour)

http://forums.activiti.org/content/sticky-how-write-unit-test

Thanks.

Re: Repeating Timers Ignoring Intervals

ms1 — Wed, 02 Sep 2015 15:09:17 GMT

Hi Vasile,

I was able to try more timer scenarios and came to the conclusion that there is an issue with limited repeating intervals. An unlimited repeating interval works fine. I only tried this with a user task with a boundary timer and email task.

For example, if you use R3/P3D, the problem appears. If you use, R/P3D then there is no problem.

I didn't write a unit test, but I created a simple diagram which reproduces this issue.

Thanks,
Mark

<?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" xmlnsmgdc="http://www.omg.org/spec/DD/20100524/DC" xmlnsmgdi="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="TimerTest" name="TimerTest" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <userTask id="usertask1" name="User Task" activiti:assignee="ASSIGNEE"></userTask>
    <boundaryEvent id="boundarytimer1" name="Timer" attachedToRef="usertask1" cancelActivity="false">
      <timerEventDefinition>
        <timeCycle>R3/PT2M</timeCycle>
      </timerEventDefinition>
    </boundaryEvent>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow1" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
    <sequenceFlow id="flow2" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <serviceTask id="mailtask1" name="Mail Task" activiti:type="mail">
      <extensionElements>
        <activiti:field name="to">
          <activiti:string><![CDATA[youremail]]></activiti:string>
        </activiti:field>
        <activiti:field name="from">
          <activiti:string><![CDATA[youremail]]></activiti:string>
        </activiti:field>
        <activiti:field name="subject">
          <activiti:string><![CDATA[Timer Test]]></activiti:string>
        </activiti:field>
        <activiti:field name="charset">
          <activiti:string><![CDATA[ISO-8859-1]]></activiti:string>
        </activiti:field>
        <activiti:field name="html">
          <activiti:string><![CDATA[<HTML>
<BODY>
<DIV>
Test email.
</DIV>
</BODY>
</HTML>]]></activiti:string>
        </activiti:field>
      </extensionElements>
    </serviceTask>
    <sequenceFlow id="flow3" sourceRef="boundarytimer1" targetRef="mailtask1"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_TimerTest">
    <bpmndi:BPMNPlane bpmnElement="TimerTest" id="BPMNPlane_TimerTest">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="70.0" y="230.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
        <omgdc:Bounds height="55.0" width="105.0" x="180.0" y="220.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="boundarytimer1" id="BPMNShape_boundarytimer1">
        <omgdc:Bounds height="30.0" width="30.0" x="270.0" y="210.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="330.0" y="230.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="mailtask1" id="BPMNShape_mailtask1">
        <omgdc:Bounds height="55.0" width="105.0" x="310.0" y="140.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="285.0" y="247.0"></omgdi:waypoint>
        <omgdi:waypoint x="330.0" y="247.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="105.0" y="247.0"></omgdi:waypoint>
        <omgdi:waypoint x="180.0" y="247.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="285.0" y="210.0"></omgdi:waypoint>
        <omgdi:waypoint x="362.0" y="195.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>

Re: Repeating Timers Ignoring Intervals

trademak — Thu, 03 Sep 2015 06:57:12 GMT

How are you testing this behaviour?
We have quite a bit of testing on timer logic in our unit tests, so I'm curious how you tested it.

Best regards,

Re: Repeating Timers Ignoring Intervals

ms1 — Thu, 10 Sep 2015 20:06:22 GMT

Hi Tijs,

I created a simple diagram(xml below) and ran it with v5.17. I was able to start a process with time cycle set to R3/PT2M and reproduce this behavior. I then changed it to R/PT2M (deployed the new xml and started a new process) and it worked as expected.

Hope this helps,
Mark

<code>
<?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" xmlnsmgdc="http://www.omg.org/spec/DD/20100524/DC" xmlnsmgdi="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="TimerTest" name="TimerTest" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <userTask id="usertask1" name="User Task" activiti:assignee="ASSIGNEE"></userTask>
    <boundaryEvent id="boundarytimer1" name="Timer" attachedToRef="usertask1" cancelActivity="false">
      <timerEventDefinition>
        <timeCycle>R3/PT2M</timeCycle>
      </timerEventDefinition>
    </boundaryEvent>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow1" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
    <sequenceFlow id="flow2" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <serviceTask id="mailtask1" name="Mail Task" activiti:type="mail">
      <extensionElements>
        <activiti:field name="to">
          <activiti:string><![CDATA[youremail]]></activiti:string>
        </activiti:field>
        <activiti:field name="from">
          <activiti:string><![CDATA[youremail]]></activiti:string>
        </activiti:field>
        <activiti:field name="subject">
          <activiti:string><![CDATA[Timer Test]]></activiti:string>
        </activiti:field>
        <activiti:field name="charset">
          <activiti:string><![CDATA[ISO-8859-1]]></activiti:string>
        </activiti:field>
        <activiti:field name="html">
          <activiti:string><![CDATA[<HTML>
<BODY>
<DIV>
Test email.
</DIV>
</BODY>
</HTML>]]></activiti:string>
        </activiti:field>
      </extensionElements>
    </serviceTask>
    <sequenceFlow id="flow3" sourceRef="boundarytimer1" targetRef="mailtask1"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_TimerTest">
    <bpmndi:BPMNPlane bpmnElement="TimerTest" id="BPMNPlane_TimerTest">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="70.0" y="230.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
        <omgdc:Bounds height="55.0" width="105.0" x="180.0" y="220.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="boundarytimer1" id="BPMNShape_boundarytimer1">
        <omgdc:Bounds height="30.0" width="30.0" x="270.0" y="210.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="330.0" y="230.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="mailtask1" id="BPMNShape_mailtask1">
        <omgdc:Bounds height="55.0" width="105.0" x="310.0" y="140.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="285.0" y="247.0"></omgdi:waypoint>
        <omgdi:waypoint x="330.0" y="247.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="105.0" y="247.0"></omgdi:waypoint>
        <omgdi:waypoint x="180.0" y="247.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="285.0" y="210.0"></omgdi:waypoint>
        <omgdi:waypoint x="362.0" y="195.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
</code>

Re: Repeating Timers Ignoring Intervals

jbarrez — Tue, 15 Sep 2015 10:35:31 GMT

"I was able to start a process with time cycle set to R3/PT2M and reproduce this behavior"

So if Im understanding you correctly you are saying this fires at 2M, 4M only and not on 6M?

Re: Repeating Timers Ignoring Intervals

ms1 — Tue, 15 Sep 2015 19:06:51 GMT

Yes. What I see is it will fire at 2M, twice at 4M(so, 2 emails sent) and nothing at 6M. I also tried R4/PT2M and saw it firing multiple times at 4M also.

Thanks,
Mark