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Visualization of running process instance

jvanhent

Hi,

I'm new to Activiti, so sorry if this question has been answered/asked before.
Is there a way of visualizing a process instance that is running?

Before claiming a user task, it would help to see 'where' the process currently is, graphically I mean.

Thanks for helping.

John

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Comments

ronald_van_kuij

Welcome, great choice to use activiti. I'd suggest to use the webapps a little and you'll soon encounter the functionality you describe. If you want it right before e.g. Claiming a task, you have to develop a custom webapp.

heymjo

the probe tool has such functionality where it generates an image and highlights in red the current state of the workflow. It would be great if the RuntimeService had a method like "InputStream generateCurrentStateAsImage(String processInstance)" that returns this image

jvanhent

the probe tool has such functionality where it generates an image and highlights in red the current state of the workflow. It would be great if the RuntimeService had a method like "InputStream generateCurrentStateAsImage(String processInstance)" that returns this image

Thanks a lot.
I found it in the actions of probes Active process instances.
This is exactly what I needed.

heymjo

so you're saying there is something we can reuse to extract the image ? Can you be more precise where to find the relevant code, very much interested in this as well !

Jorg

frederikherema1

see org.activiti.engine.impl.bpmn.diagram.ProcessDiagramGenerator
and org.activiti.rest.api.process.ProcessInstanceDiagramGet for example usage

gant

Hi,

I try to visualize a process as described above. But get the following exception:

Caused by: java.awt.image.RasterFormatException: (x + width) is outside raster<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at sun.awt.image.IntegerInterleavedRaster.createWritableChild(IntegerInterleavedRaster.java:450)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at java.awt.image.BufferedImage.getSubimage(BufferedImage.java:1156)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.bpmn.diagram.ProcessDiagramCanvas.generateImage(ProcessDiagramCanvas.java:164)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.activiti.engine.impl.bpmn.diagram.ProcessDiagramGenerator.generateDiagram(ProcessDiagramGenerator.java:220)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at ch.itartis.taskmanagement.visualization.ProcessVisualizerServiceImpl.generateImage(ProcessVisualizerServiceImpl.java:25)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at java.lang.reflect.Method.invoke(Method.java:597)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.expression.spel.support.ReflectiveMethodExecutor.execute(ReflectiveMethodExecutor.java:69)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.expression.spel.ast.MethodReference.getValueInternal(MethodReference.java:104)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal(CompoundExpression.java:57)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.expression.spel.ast.SpelNodeImpl.getTypedValue(SpelNodeImpl.java:102)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:97)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.binding.expression.spel.SpringELExpression.getValue(SpringELExpression.java:78)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.webflow.action.EvaluateAction.doExecute(EvaluateAction.java:75)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.webflow.action.AbstractAction.execute(AbstractAction.java:188)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.webflow.execution.AnnotatedAction.execute(AnnotatedAction.java:145)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; at org.springframework.webflow.execution.ActionExecutor.execute(ActionExecutor.java:51)

The code to generate is:

public class ProcessVisualizerServiceImpl implements ProcessVisualizerService {<br><br> private RuntimeService runtimeService;<br><br> private RepositoryService repositoryService;<br><br> public InputStream generateImage(String processInstanceId) {<br><br>&nbsp; ExecutionEntity pi = (ExecutionEntity) runtimeService.createProcessInstanceQuery()<br>&nbsp;&nbsp;&nbsp; .processInstanceId(processInstanceId).singleResult();<br><br>&nbsp; ProcessDefinitionEntity pde = (ProcessDefinitionEntity) repositoryService.createProcessDefinitionQuery()<br>&nbsp;&nbsp;&nbsp; .processDefinitionId(pi.getProcessDefinitionId()).singleResult();<br><br>&nbsp; return (InputStream) ProcessDiagramGenerator.generateDiagram(pde, "png",<br>&nbsp;&nbsp;&nbsp; runtimeService.getActiveActivityIds(processInstanceId));<br><br> }<br>&hellip;

The image of the process looks quite normal in Activiti Designer…

Any ideas, what I'm doing wrong?

Regards,

frederikherema1

<br>ProcessDefinitionEntity pde = (ProcessDefinitionEntity) repositoryService.createProcessDefinitionQuery()<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .processDefinitionId(pi.getProcessDefinitionId()).singleResult();<br>

The above returns an unitiatialized definition, use this instead (see org.activiti.rest.api.process.ProcessInstanceDiagramGet).

<br> ProcessDefinitionEntity pde = (ProcessDefinitionEntity) ((RepositoryServiceImpl) getRepositoryService())<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; .getDeployedProcessDefinition(pi.getProcessDefinitionId());<br>

Not sure this is causing the issue, but you can try…

gant

This no works. Thx.

frederikherema1

Do you mean it 'now' works, or 'not' working?