Examples with TaskInstanceAverageInfo org.wso2.carbon.bpmn.rest.model.stats.TaskInstanceAverageInfo used on opensource projects

Example 1 with TaskInstanceAverageInfo

use of org.wso2.carbon.bpmn.rest.model.stats.TaskInstanceAverageInfo in project carbon-business-process by wso2.

the class ProcessStatisticsService method avgTaskTimeDurationForCompletedProcesses.

/**
 * Average task duration for completed processes
 *
 * @param pId processDefintionId of the process selected to view the average time duration for each task
 * @return list of completed tasks with the average time duration for the selected process
 */
@GET
@Path("/task-instances/duration/avarage/{pid}")
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
public ResponseHolder avgTaskTimeDurationForCompletedProcesses(@PathParam("pid") String pId) {
    RepositoryService repositoryService = BPMNOSGIService.getRepositoryService();
    HistoryService historyService = BPMNOSGIService.getHistoryService();
    long processCount = repositoryService.createProcessDefinitionQuery().processDefinitionTenantId(getTenantIdStr()).processDefinitionId(pId).count();
    if (processCount == 0) {
        throw new ActivitiObjectNotFoundException("Count not find a matching process with PID '" + pId + "'.");
    }
    ResponseHolder response = new ResponseHolder();
    List<Object> taskListForProcess = new ArrayList<>();
    HashMap<String, Long> map = new HashMap<>();
    // Get the number of completed/finished process instance for each process definition
    HistoricProcessInstanceQuery historicProcessInstanceQuery = historyService.createHistoricProcessInstanceQuery().processInstanceTenantId(getTenantIdStr()).processDefinitionId(pId).finished();
    // Get the count of the complete process instances
    long noOfHistoricInstances = historicProcessInstanceQuery.count();
    // If the deployed process does not have any completed process instances --> Ignore
    if (noOfHistoricInstances == 0) {
        response.setData(taskListForProcess);
    } else // If the deployed process has completed process instances --> then
    {
        TaskInstanceAverageInfo tInstance;
        // Get the list of completed tasks/activities in the completed process instance by passing the
        // process definition id of the process
        List<HistoricTaskInstance> taskList = BPMNOSGIService.getHistoryService().createHistoricTaskInstanceQuery().taskTenantId(getTenantIdStr()).processDefinitionId(pId).processFinished().list();
        // Iterate through each completed task/activity and get the task name and duration
        for (HistoricTaskInstance taskInstance : taskList) {
            // Get the task name
            String taskKey = taskInstance.getTaskDefinitionKey();
            // Get the time duration taken for the task to be completed
            long taskDuration = taskInstance.getDurationInMillis();
            if (map.containsKey(taskKey)) {
                long tt = map.get(taskKey);
                map.put(taskKey, taskDuration + tt);
            } else {
                map.put(taskKey, taskDuration);
            }
        // Iterating Task List finished
        }
        Iterator iterator = map.keySet().iterator();
        while (iterator.hasNext()) {
            String key = iterator.next().toString();
            double value = map.get(key) / noOfHistoricInstances;
            tInstance = new TaskInstanceAverageInfo();
            tInstance.setTaskDefinitionKey(key);
            tInstance.setAverageTimeForCompletion(value);
            taskListForProcess.add(tInstance);
        }
        response.setData(taskListForProcess);
    }
    return response;
}