public static void Do()
{
var @continue = File.Exists(@"./timer.txt");
if (@continue)
{
Continue();
return;
}
var storageEngine = new SimpleFileStorageEngine(@"./timer.txt", false);
var scheduler = new PoormansExecutionEngine();
scheduler.Start(storageEngine, false);
scheduler.Schedule(() => Console.WriteLine("Hello From Anonymous Function"));
var cw = new ConsoleWriter("Hello From Console Writer");
new PersistentTimer(
DateTime.Now + TimeSpan.FromSeconds(10),
cw.Do,
false,
scheduler
);
}
public PersistentTimer(DateTime expiration, Action action, bool hasBeenExecuted, PoormansExecutionEngine executionEngine)
{
_expiration = expiration;
_action = action;
_hasBeenExecuted = hasBeenExecuted;
_executionEngine = executionEngine;
if (!_hasBeenExecuted)
{
executionEngine.Schedule(Start);
}
}
private void Start()
{
_executionEngine.Entangle(this);
var now = DateTime.Now;
var delay = _expiration - now;
if (delay.Ticks < 0)
{
delay = TimeSpan.Zero;
}
Task.Delay(delay).ContinueWith(_ =>
{
_executionEngine.Schedule(() =>
{
_action();
_hasBeenExecuted = true;
_executionEngine.Untangle(this);
});
});
}