I have a simple BPMN that has a Service Task followed by a User Task.
The Service Task references an instantiable JavaDelegate, that simply logs a message.
When I start an instance of the definition, the JavaDelegate is executed, but the instance immediately ends. The User Task never appears in the Tasklist.
What am I doing wrong here?
Can you upload you bpmn model.
If i where to guess i would say you’re using a Manual Task
When you intention is better served by using a User Task
<bpmn:definitions xmlns:bpmn=“http://www.omg.org/spec/BPMN/20100524/MODEL” xmlns:bpmndi=“http://www.omg.org/spec/BPMN/20100524/DI” xmlns:di=“http://www.omg.org/spec/DD/20100524/DI” xmlns:dc=“http://www.omg.org/spec/DD/20100524/DC” xmlns:camunda=“http://camunda.org/schema/1.0/bpmn” xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance” id=“Definitions_1” targetNamespace=“http://bpmn.io/schema/bpmn” exporter=“Camunda Modeler” exporterVersion=“1.11.3”>
<bpmn:process id=“Service_Task_Delegate” name=“Service Task Delegate” isExecutable=“true”>
<bpmn:startEvent id=“StartEvent”>
bpmn:outgoingSequenceFlow_1</bpmn:outgoing>
</bpmn:startEvent>
<bpmn:sequenceFlow id=“SequenceFlow_1” sourceRef=“StartEvent” targetRef=“Service_Task” />
<bpmn:endEvent id=“EndEvent”>
bpmn:incomingSequenceFlow_3</bpmn:incoming>
</bpmn:endEvent>
<bpmn:sequenceFlow id=“SequenceFlow_2” sourceRef=“Service_Task” targetRef=“User_Task” />
<bpmn:serviceTask id=“Service_Task” name=“Service Task” camunda:class=“com.autodesk.workflow.delegates.ServiceActionDelegate”>
bpmn:incomingSequenceFlow_1</bpmn:incoming>
bpmn:outgoingSequenceFlow_2</bpmn:outgoing>
</bpmn:serviceTask>
<bpmn:sequenceFlow id=“SequenceFlow_3” sourceRef=“User_Task” targetRef=“EndEvent” />
<bpmn:userTask id=“User_Task” name=“User Task”>
bpmn:extensionElements
<camunda:formData />
</bpmn:extensionElements>
bpmn:incomingSequenceFlow_2</bpmn:incoming>
bpmn:outgoingSequenceFlow_3</bpmn:outgoing>
</bpmn:userTask>
</bpmn:process>
<bpmndi:BPMNDiagram id=“BPMNDiagram_1”>
<bpmndi:BPMNPlane id=“BPMNPlane_1” bpmnElement=“Service_Task_Delegate”>
<bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement=“StartEvent”>
<dc:Bounds x=“173” y=“102” width=“36” height=“36” />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id=“SequenceFlow_08j65hc_di” bpmnElement=“SequenceFlow_1”>
<di:waypoint xsi:type=“dc:Point” x=“209” y=“120” />
<di:waypoint xsi:type=“dc:Point” x=“317” y=“120” />
bpmndi:BPMNLabel
<dc:Bounds x=“218” y=“98.5” width=“90” height=“13” />
</bpmndi:BPMNLabel>
</bpmndi:BPMNEdge>
<bpmndi:BPMNShape id=“EndEvent_1ffuz1t_di” bpmnElement=“EndEvent”>
<dc:Bounds x=“672” y=“102” width=“36” height=“36” />
bpmndi:BPMNLabel
<dc:Bounds x=“645” y=“141” width=“90” height=“13” />
</bpmndi:BPMNLabel>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id=“SequenceFlow_1ht1rky_di” bpmnElement=“SequenceFlow_2”>
<di:waypoint xsi:type=“dc:Point” x=“417” y=“120” />
<di:waypoint xsi:type=“dc:Point” x=“485” y=“120” />
bpmndi:BPMNLabel
<dc:Bounds x=“406” y=“98.5” width=“90” height=“13” />
</bpmndi:BPMNLabel>
</bpmndi:BPMNEdge>
<bpmndi:BPMNShape id=“ServiceTask_0ktkftf_di” bpmnElement=“Service_Task”>
<dc:Bounds x=“317” y=“80” width=“100” height=“80” />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id=“SequenceFlow_1w0so3r_di” bpmnElement=“SequenceFlow_3”>
<di:waypoint xsi:type=“dc:Point” x=“585” y=“120” />
<di:waypoint xsi:type=“dc:Point” x=“672” y=“120” />
bpmndi:BPMNLabel
<dc:Bounds x=“628.5” y=“98.5” width=“0” height=“13” />
</bpmndi:BPMNLabel>
</bpmndi:BPMNEdge>
<bpmndi:BPMNShape id=“UserTask_0o2gcsb_di” bpmnElement=“User_Task”>
<dc:Bounds x=“485” y=“80” width=“100” height=“80” />
</bpmndi:BPMNShape>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</bpmn:definitions>
And here’s the JavaDelegate:
package com.autodesk.workflow.delegates;
import org.camunda.bpm.engine.delegate.DelegateExecution;
import org.camunda.bpm.engine.delegate.JavaDelegate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ServiceActionDelegate implements JavaDelegate {
private static final Logger logger = LoggerFactory.getLogger(ServiceActionDelegate.class);
public void execute(DelegateExecution execution) throws Exception {
logger.info("ProcessInstanceId [" + execution.getProcessInstanceId() + "] ProcessDefinitionId [" +
execution.getProcessDefinitionId() + "]");
}
}
The XML you posted is not rendering into a BPMN model. Could you upload the file itself.
I can’t see any reason from the picture that it wouldn’t wait at the user task so i’m going to need to run it locally to find out.
Hi Niall, Thank you for looking at this. I’ll upload the file right now.
I deployed that model and it ran as expected and stopped at the user task - you can see the token waiting in cockpit:
Since renaming the delegate, I too see what you do, that the User Task is created and waiting to be claimed. I cannot explain why this was not working before, but I am glad it is working as I would expect. Thank you for confirmed what I expected!
