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Active events on completed tasks

leonhardtdavid

Hi!!

I'm new in Activiti, but I'm having a problem on a single task in my process.

I can't finish a process instance because I have active events belonging to finished execution.
I'm using activiti 5.11 and the activiti designer.

Thank you very much,
David.

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Comments

jbarrez

'active events' … i have no clue what you mean with that.
Could you describe your problem a bit better?

leonhardtdavid

Sorry.

I have two rows in ACT_RU_EVENT_SUBSCR with an execution id and that id is not in ACT_RU_EXECUTION or ACT_RU_TASK.

Thanks.

frederikherema1

What's the error stack trace?

leonhardtdavid

This is the link to the error stack trace:

http://pastebin.com/Dy9e5R6R

jbarrez

Really strange issue … can't directly see how it could be caused.
Is there any way you can create a reproducable unit test?

leonhardtdavid

It is quite difficult to do, since I've seen happening in a particular task and not always.

jbarrez

well, can't you use that particular task in a unit test 😉

Otherwise it's pretty hard to validate for us.

leonhardtdavid

Hello again,.

I understood when I have the problem, so there is de unit test (I used a boundary event signal, is the same for a timer):

I use this template: https://github.com/Activiti/activiti-unit-test-template

Process:
<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:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns

mgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns

mgdi="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">
<signal id="signal" name="Signal"></signal>
<process id="my-process" name="My process" isExecutable="true">
    <startEvent id="startevent1" name="Start"></startEvent>
    <userTask id="usertask1" name="User Task 1"></userTask>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow2" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
    <boundaryEvent id="boundarysignal1" name="Signal" attachedToRef="usertask1" cancelActivity="false">
      <signalEventDefinition signalRef="signal"></signalEventDefinition>
    </boundaryEvent>
    <userTask id="usertask2" name="User Task 2"></userTask>
    <sequenceFlow id="flow3" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
    <endEvent id="endevent2" name="End"></endEvent>
    <sequenceFlow id="flow4" sourceRef="usertask2" targetRef="endevent2"></sequenceFlow>
    <subProcess id="subprocess1" name="Sub Process">
      <startEvent id="startevent2" name="Start"></startEvent>
      <userTask id="usertask3" name="User Task 3"></userTask>
      <sequenceFlow id="flow6" sourceRef="startevent2" targetRef="usertask3"></sequenceFlow>
      <endEvent id="endevent3" name="End"></endEvent>
      <sequenceFlow id="flow7" sourceRef="usertask3" targetRef="endevent3"></sequenceFlow>
    </subProcess>
    <sequenceFlow id="flow5" sourceRef="boundarysignal1" targetRef="subprocess1"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_my-process">
    <bpmndi:BPMNPlane bpmnElement="my-process" id="BPMNPlane_my-process">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="120.0" y="130.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask1" id="BPMNShape_usertask1">
        <omgdc:Bounds height="55.0" width="105.0" x="200.0" y="120.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="boundarysignal1" id="BPMNShape_boundarysignal1">
        <omgdc:Bounds height="30.0" width="30.0" x="275.0" y="160.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="360.0" y="130.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask2" id="BPMNShape_usertask2">
        <omgdc:Bounds height="55.0" width="105.0" x="360.0" y="120.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent2" id="BPMNShape_endevent2">
        <omgdc:Bounds height="35.0" width="35.0" x="520.0" y="130.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="subprocess1" id="BPMNShape_subprocess1">
        <omgdc:Bounds height="101.0" width="291.0" x="144.0" y="240.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="startevent2" id="BPMNShape_startevent2">
        <omgdc:Bounds height="35.0" width="35.0" x="174.0" y="280.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="usertask3" id="BPMNShape_usertask3">
        <omgdc:Bounds height="55.0" width="105.0" x="244.0" y="270.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent3" id="BPMNShape_endevent3">
        <omgdc:Bounds height="35.0" width="35.0" x="374.0" y="280.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="155.0" y="147.0"></omgdi:waypoint>
        <omgdi:waypoint x="200.0" y="147.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="305.0" y="147.0"></omgdi:waypoint>
        <omgdi:waypoint x="360.0" y="147.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
        <omgdi:waypoint x="305.0" y="147.0"></omgdi:waypoint>
        <omgdi:waypoint x="360.0" y="147.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
        <omgdi:waypoint x="465.0" y="147.0"></omgdi:waypoint>
        <omgdi:waypoint x="520.0" y="147.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">
        <omgdi:waypoint x="209.0" y="297.0"></omgdi:waypoint>
        <omgdi:waypoint x="244.0" y="297.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow7" id="BPMNEdge_flow7">
        <omgdi:waypoint x="349.0" y="297.0"></omgdi:waypoint>
        <omgdi:waypoint x="374.0" y="297.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
        <omgdi:waypoint x="290.0" y="190.0"></omgdi:waypoint>
        <omgdi:waypoint x="289.0" y="240.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>
</code>

Unit test:
<java>
package org.activiti;
import java.util.List;

import org.activiti.engine.RuntimeService;
import org.activiti.engine.TaskService;
import org.activiti.engine.runtime.Execution;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.activiti.engine.test.ActivitiRule;
import org.activiti.engine.test.Deployment;
import org.junit.Rule;
import org.junit.Test;

import static org.junit.Assert.*;

public class MyUnitTest {

@Rule
public ActivitiRule activitiRule = new ActivitiRule();

@Test
@Deployment(resources = {"org/activiti/test/my-process.bpmn20.xml"})
public void test() {
RuntimeService runtimeService = activitiRule.getRuntimeService();
TaskService taskService = activitiRule.getTaskService();

String signalName = "Signal";

ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("my-process");
assertNotNull(processInstance);

runtimeService.signalEventReceived(signalName);

Task task1 = taskService.createTaskQuery().taskName("User Task 1").singleResult();

if (task1 != null) {
   taskService.complete(task1.getId());
}

List<Execution> signals = runtimeService.createExecutionQuery()
    .signalEventSubscriptionName(signalName)
    .list();

assertTrue(signals.size() == 0);
}

}

</java>

Thank you.

jbarrez

Thanks, excellent unit test.

I tried your unit test (on 5.15-SNAPSHOT), however it only failes on

<code>
assertTrue(signals.size() == 0);
</code>

which is logical, since the signal is global and not process instance scoped (activiti:scope="processInstance").

So it seems your issue is fixed in a later version of Activiti.

leonhardtdavid

So, there is no way to solve the problem until you fix this?

Another way to do this, without the signals problem?

Thank you very much.

jbarrez

> So, there is no way to solve the problem until you fix this?

No, the problem you stated above is not happening. The error i'm seeing is caused by an incorrect test

leonhardtdavid

I solve the problem changing the process. Now I use a intermediate event instead of a boundary event.
I need that <java>assertTrue(signals.size() == 0);</java> pass, not fail.

Is this problem your decision or an bpm standard?

Thank you very much!

jbarrez

The BPM standard only has global signals (so you can fire a signal from one process instance to other process instance with a different process definition even). That is what the spec defines.

We added the process-instance scoped signal ourselves, to only fire the signal event within the same process instance.
If I recall correctly, this was the reason why that assertion failed in your unit test.