I would like to generate process instance diagram (image) with active tasks and flows highlighted.How can we do that programmatically in Activiti 5.21.0? Most examples in the forums are 3+ years old and somewhat deprecated.Process Diagram Generator code sample in most examples reports 'Cannot make a static reference to the non-static method generateDiagram(model …) from the type ProcessDiagramGenerator'.How can we get an instance of class that implements ProcessDiagramGenerator interface? Is there another approach you would recommend?
String processInstanceId = …
String processDefinitionId = …
ProcessDefinition pde = repositoryService.getProcessDefinition(processDefinitionId);
if (pde != null && pde.hasGraphicalNotation()) {
BpmnModel model = repositoryService.getBpmnModel(pde.getId());
List<String> activities = runtimeService.getActiveActivityIds(processInstanceId);
List<String> flows = new ArrayList<String>();
InputStream stream = ProcessDiagramGenerator.generateDiagram(model, "PNG", activities, flows);
}
