/// <summary>
/// Initializes the task manager with the property values specified in the configuration file.
/// </summary>
public void Initialize()
{
this._taskThreads.Clear();
var taskService = EngineContext.Current.Resolve<IScheduleTaskService>();
var scheduleTasks = taskService
.GetAllTasks()
.OrderBy(x => x.Seconds)
.ToList();
//group by threads with the same seconds
foreach (var scheduleTaskGrouped in scheduleTasks.GroupBy(x => x.Seconds))
{
//create a thread
var taskThread = new TaskThread
{
Seconds = scheduleTaskGrouped.Key
};
foreach (var scheduleTask in scheduleTaskGrouped)
{
var task = new Task(scheduleTask);
taskThread.AddTask(task);
}
this._taskThreads.Add(taskThread);
}
//sometimes a task period could be set to several hours (or even days).
//in this case a probability that it'll be run is quite small (an application could be restarted)
//we should manually run the tasks which weren't run for a long time
var notRunTasks = scheduleTasks
//find tasks with "run period" more than 30 minutes
.Where(x => x.Seconds >= _notRunTasksInterval)
.Where(x => !x.LastStartUtc.HasValue || x.LastStartUtc.Value.AddSeconds(x.Seconds) < DateTime.UtcNow)
.ToList();
//create a thread for the tasks which weren't run for a long time
if (notRunTasks.Count > 0)
{
var taskThread = new TaskThread
{
RunOnlyOnce = true,
Seconds = 60 * 5 //let's run such tasks in 5 minutes after application start
};
foreach (var scheduleTask in notRunTasks)
{
var task = new Task(scheduleTask);
taskThread.AddTask(task);
}
this._taskThreads.Add(taskThread);
}
}
public ActionResult RunNow(int id) {
if (!_permissionService.Authorize(StandardPermissionProvider.ManageScheduleTasks))
return AccessDeniedView();
try {
var scheduleTask = _scheduleTaskService.GetTaskById(id);
if (scheduleTask == null)
throw new Exception("Schedule task cannot be loaded");
var task = new Task(scheduleTask);
//ensure that the task is enabled
task.Enabled = true;
//do not dispose. otherwise, we can get exception that DbContext is disposed
task.Execute(true, false);
SuccessNotification(_localizationService.GetResource("Admin.System.ScheduleTasks.RunNow.Done"));
} catch (Exception exc) {
ErrorNotification(exc);
}
return RedirectToAction("List");
}