User audit on process variable change

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wdefik

Hi everybody. Thanks the activiti developer team for their great job!
My question is: I want to know what user have changed my process's variable. How it can be done?

For example (activiti-engine v5.13):
1) in activiti.cfg.xml - <property name="history" value="full" />

2) Java code

RuntimeService runtimeSvc = activitiRule.getRuntimeService();
TaskService taskSvc = activitiRule.getTaskService();
HistoryService historySvc = activitiRule.getHistoryService();

Map<String, String> vars = new HashMap<String, String>();
vars.put("myVar", "Test");

ProcessInstance processInstance = runtimeSvc.startProcessInstanceByKey("myprocess", vars)

vars.put("myVar", "new value");
taskSvc.complete(taskSvc.createTaskQuery().singleResult().getId(), vars);

Then i can retrieve all variable changes by
historySvc.createHistoricDetailQuery().variableUpdates().processInstanceId(processInstance.getProcessInstanceId()).list()

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But an HistoricDetailVariableInstanceUpdateEntity does not have a user id property. Could you tell me any approach how i can get an actor user?
Thanks in advance.

martin_grofcik

This information is not recorded.
Possibilities:

1. use task assignee to determine to whom task was assigned. I think it is not what you want to.
2. extend TaskService.complete method implementation.
3. put the information (who did the change) into task variables. It will be recorded.