// constructors
/// <summary>
/// Initializes a new instance of the <see cref="TaskItem" /> class.
/// </summary>
/// <param name="recurrence">The recurrence</param>
/// <param name="action">The action</param>
/// <param name="lifetime">The lifetime</param>
public TaskItem(Action<TaskActionParameters> action)
{
this.status = TaskItemStatus.NotStarted;
this.lastRun = DateTimeOffset.MinValue;
this.recurrence = Recurrence.Once;
this.repeat = 1;
this.action = action;
this.lifetime = TimeSpan.Zero;
this.activeActions = new Collection<TaskActionParameters>();
}
/// <summary>
/// Initializes this instance.
/// </summary>
public void Init()
{
this.Status = TaskItemStatus.Running;
this.LastRun = DateTimeOffset.UtcNow;
}
/// <summary>
/// Runs the specified date time.
/// </summary>
/// <param name="dateTime">The date time</param>
public void Run(DateTimeOffset? dateTime = null)
{
DateTimeOffset now = dateTime.GetValueOrDefault(DateTimeOffset.UtcNow);
if (now > this.Recurrence.DateEnd)
{
this.Status = TaskItemStatus.Stopped;
return;
}
if (!this.Recurrence.CheckDate(now))
{
return;
}
if (this.Status != TaskItemStatus.Running)
{
return;
}
else if (now.Subtract(this.LastRun) < this.Recurrence.Interval)
{
return;
}
this.LastRun = now;
CancellationTokenSource cancellationTokenSource;
if (this.Lifetime != TimeSpan.Zero)
{
cancellationTokenSource = new CancellationTokenSource(this.Lifetime);
}
else
{
cancellationTokenSource = new CancellationTokenSource();
}
TaskActionParameters cronActionParameters = new TaskActionParameters(this, now, cancellationTokenSource);
this.ActiveActions.Add(cronActionParameters);
Action actionToRun = () =>
{
for (int i = this.Repeat; i > 0; i--) {
this.Action(cronActionParameters);
}
this.ActiveActions.Remove(cronActionParameters);
};
Task lastTask = Task.Run(actionToRun, cancellationTokenSource.Token);
if (this.Recurrence.Interval == TimeSpan.Zero)
{
this.Status = TaskItemStatus.Stopped;
}
}
public string GetTaskStatusUIElement(TaskItemStatus taskStatus)
{
return(_taskStatusUIElement[taskStatus]);
}
