public void StopTask(Int64 taskId, bool waitResponse = false)
{
if (taskManagerState == TaskManagerState.ServerOnly)
{
throw new InvalidOperationException("taskManagerState == TaskManagerState.ServerOnly");
}
logger.WriteDebug("Preparing for stopping task... Updating the task in the database...");
taskDataContext.SetTaskState(taskId, TaskStates.Cancel);
logger.WriteDebug("The task has been marked as cancelled. Task identifier = {0}", taskId);
if (waitResponse)
{
//TODO: Wait response from the task if needed.
}
}
private void OnCompletedEventHandler(object sender, RunningTaskEventArg eventArg)
{
IRunningTask currentTask = (IRunningTask)sender;
currentTask.OnCompletedEventHandler -= OnCompletedEventHandler;
TaskStates taskState;
Int64 taskId = currentTask.TaskModel.Id;
switch (eventArg)
{
case RunningTaskEventArg.Completed:
logger.WriteTrace("The task has been completed: {0}", taskId);
taskState = TaskStates.Successed;
break;
case RunningTaskEventArg.Cancelled:
logger.WriteTrace("The task has been canceled: {0}", taskId);
taskState = TaskStates.Cancelled;
break;
case RunningTaskEventArg.Failed:
logger.WriteTrace("The task has been failed: {0}", taskId);
taskState = TaskStates.Failed;
break;
default:
throw new NotImplementedException();
}
if (taskState == TaskStates.Successed || taskState == TaskStates.Cancelled)
{
lock (activeTasks)
{
if (activeTasks.ContainsKey(taskId) == false)
{
return;
}
activeTasks.Remove(taskId);
}
TaskStateModel taskStateModel = new TaskStateModel(taskId, currentTask.TaskModel.QueueId, currentTask.TaskModel.ServerId, taskState);
taskDataContext.SetTaskState(taskStateModel);
}
else
{
//TODO: correct message and details.
RestartTask(currentTask.TaskModel, "Exception inside", new Exception("TODO"));
}
}