private void ApplyTaskStatus(TaskDescriptor descriptor)
{
if (descriptor.TaskType == TaskType.Scheduled)
{
if (descriptor.TaskState != TaskState.Suspended)
{
descriptor.TaskState = TaskState.Finished;
descriptor.Timer.Dispose();
RemoveTask(descriptor.TaskId);
}
}
else if (descriptor.TaskType == TaskType.Interval)
{
if (descriptor.TaskState != TaskState.Suspended && descriptor.TaskState != TaskState.Paused && descriptor.TaskState != TaskState.Aborted && descriptor.TaskState != TaskState.Finished)
{
descriptor.TaskState = TaskState.Pending;
}
}
}
private bool FinishTaskIfRequired(TaskDescriptor descriptor)
{
if (descriptor.TaskType == TaskType.Interval &&
(descriptor.EndDate.HasValue && DateTime.Now > descriptor.EndDate))
{
// NOTE: check this case for long frequent tasks.
descriptor.TaskState = TaskState.Finished;
descriptor.Timer.Dispose();
RemoveTask(descriptor.TaskId);
return true;
}
bool result = false;
if (descriptor.TaskType == TaskType.Interval &&
(descriptor.ExecuteTimesLimit.HasValue && descriptor.ExecuteTimesLimit <= descriptor.ExecutingTimes))
{
descriptor.Timer.Dispose();
result = true;
}
if (descriptor.TaskType == TaskType.Interval &&
(descriptor.ExecuteTimesLimit.HasValue && descriptor.ExecuteTimesLimit <= descriptor.ExecutedTimes))
{
//logger.Info("Finished task " + descriptor.TaskId);
descriptor.TaskState = TaskState.Finished;
RemoveTask(descriptor.TaskId);
result= true;
}
return result;
}
private string AddTimerTask(ITask task, DateTime? startDate, long interval, DateTime? endDate, int? repeatTimes)
{
// AssertUtils.Check(!startDate.HasValue || startDate > DateTime.Now, "Start date should be greater then now.", "startDate");
if (interval == 0) interval = -1;
DateTime now = DateTime.Now;
//if (startDate.HasValue)
//{
// startDate = startDate.Value;
// if (startDate <= now)
// {
// startDate = startDate.Value.Add(now.Date.AddDays(startDate.Value.TimeOfDay <= now.TimeOfDay ? 1 : 0) - startDate.Value.Date);
// }
// }
// This check required for Scheduled tasks only.
AssertUtils.Check(interval != -1 || !startDate.HasValue || !endDate.HasValue || startDate <= endDate,
"Start date should be less then end date.", "startDate, endDate");
long startOffset = startDate.HasValue ? (long) startDate.Value.Subtract(now).TotalMilliseconds : 0;
if (startOffset <= 0 && interval > 0)
{
// If start date is in past, we'll add interval * min number to make start offset > 0. Previous logic with adding days is not valid.
var multiplier = (int) Math.Floor(Math.Abs(startOffset)/(double) interval) + 1;
startOffset += multiplier*interval;
}
else if(startOffset <= 0 && startOffset > -120000 && interval == -1)
{
startOffset = 0;
}
string taskId = GenerateTaskId();
if (startOffset > int.MaxValue ) throw new ArgumentOutOfRangeException("startDate", "The start date {0:dd MMM yyyy} is too far from now.".F(startDate));
if (startOffset <= -120000 && interval <= 0)
{
logger.WarnFormat("The task {0} is obsolete, skipped. Type: {1}. Start date: {2}. Interval: {3} ms.", task.Description,
TaskType.Scheduled, now.AddMilliseconds(startOffset), 0);
return "";
}
var taskDescriptor = new TaskDescriptor(taskId)
{
Task = task,
TaskType = interval == -1 ? TaskType.Scheduled : TaskType.Interval,
Interval = interval,
EndDate = endDate,
ExecuteTimesLimit = repeatTimes
};
taskDescriptor.Timer = new Timer(TimerCallBack, taskDescriptor, startOffset, interval);
tasks[taskId] = taskDescriptor;
logger.InfoFormat("Adding {0} task. Type: {1}. Start date: {2}. Interval: {3} ms.", task.Description,
taskDescriptor.TaskType, now.AddMilliseconds(startOffset),
taskDescriptor.Interval);
return taskId;
}
