public void Wait_ThrowsOperationCanceledException_OnStop()
{
var fail = true;
using (var controller = new ThreadController())
{
controller.Add(c =>
{
try
{
Thread.Sleep(100);
c.Wait();
}
catch (OperationCanceledException)
{
fail = false;
}
});
controller.Start();
controller.Stop();
Assert.That(fail, Is.False, "Expected OperationCanceledException");
}
}
public void Stop_DoesNotPropagate_OperationCanceledExceptions()
{
using (var controller = new ThreadController())
{
controller.Add(c => { Thread.Sleep(50); c.Wait(); });
controller.Add(c => { Thread.Sleep(50); c.Wait(); });
controller.Add(c => { Thread.Sleep(50); throw new OperationCanceledException(); });
controller.Start();
controller.Stop();
}
}
public void Add_DoesNotStartTasks()
{
var token = "Token";
using(var controller = new ThreadController())
{
controller.Add(c => { token = "Changed"; });
Thread.Sleep(50);
Assert.That(token, Is.EqualTo("Token"));
controller.Stop();
}
}
public void StartAction_StartsTaskImmediately()
{
var token = "Token";
using(var controller = new ThreadController())
{
controller.Start(c => { token = "Changed"; });
Thread.Sleep(50);
Assert.That(token, Is.EqualTo("Changed"));
controller.Stop();
}
}
public void Add_DoesNotStartTasks()
{
var token = "Token";
using (var controller = new ThreadController())
{
controller.Add(c => { token = "Changed"; });
Thread.Sleep(50);
Assert.That(token, Is.EqualTo("Token"));
controller.Stop();
}
}
public void StartAction_StartsTaskImmediately()
{
var token = "Token";
using (var controller = new ThreadController())
{
controller.Start(c => { token = "Changed"; });
Thread.Sleep(50);
Assert.That(token, Is.EqualTo("Changed"));
controller.Stop();
}
}
public void Pause_PausesWaitingTasks()
{
long[] token = { 0 };
using (var controller = new ThreadController())
{
controller.Add(c => { Thread.Sleep(50); c.Wait(); Interlocked.Increment(ref token[0]); });
controller.Add(c => { Thread.Sleep(50); c.Wait(); Interlocked.Increment(ref token[0]); });
controller.Add(c => { Thread.Sleep(50); c.Wait(); Interlocked.Increment(ref token[0]); });
controller.Start();
controller.Pause();
Thread.Sleep(100);
Assert.That(Interlocked.Read(ref token[0]), Is.EqualTo(0));
controller.Stop();
}
}
public void Pause_PausesWaitingTasks()
{
long[] token = { 0 };
using(var controller = new ThreadController())
{
controller.Add(c => { Thread.Sleep(50); c.Wait(); Interlocked.Increment(ref token[0]); });
controller.Add(c => { Thread.Sleep(50); c.Wait(); Interlocked.Increment(ref token[0]); });
controller.Add(c => { Thread.Sleep(50); c.Wait(); Interlocked.Increment(ref token[0]); });
controller.Start();
controller.Pause();
Thread.Sleep(100);
Assert.That(Interlocked.Read(ref token[0]), Is.EqualTo(0));
controller.Stop();
}
}
public void Start_StartsAllPendingTasks()
{
long[] token = { 0 };
using (var controller = new ThreadController())
{
controller.Add(c => Interlocked.Increment(ref token[0]));
controller.Add(c => Interlocked.Increment(ref token[0]));
controller.Add(c => Interlocked.Increment(ref token[0]));
Assert.That(Interlocked.Read(ref token[0]), Is.EqualTo(0));
controller.Start();
Thread.Sleep(50);
Assert.That(Interlocked.Read(ref token[0]), Is.EqualTo(3));
controller.Stop();
}
}
public void Stop_PropagatesExceptions()
{
using (var controller = new ThreadController())
{
controller.Add(c => { throw new InvalidOperationException(); });
controller.Add(c => { Thread.Sleep(50); c.Wait(); throw new ArgumentOutOfRangeException(); });
controller.Add(c => { throw new ArgumentNullException(); });
controller.Start();
try
{
controller.Stop();
Assert.Fail("Expected AggregateException.");
}
catch (AggregateException)
{
}
}
}
public void Wait_WithTimeout_BlocksExecution()
{
var fail = false;
using (var controller = new ThreadController())
{
controller.Add(c =>
{
c.Wait(TimeSpan.FromMilliseconds(100));
fail = true;
});
controller.Add(c => c.Wait());
controller.Start();
Thread.Sleep(50);
controller.Stop();
Assert.That(fail, Is.False);
}
}
public void Execute(ScheduledTask task, ThreadController controller)
{
controller.Wait();
task.Status = TaskStatus.Running;
_repository.Save(task);
var client = CreateClient(task);
controller.Wait();
try
{
client.Open();
var result = client.Execute();
client.Close();
RecordResult(task, result.Result, result.Message);
}
catch (TimeoutException te)
{
RecordResult(task, TaskResult.RecoverableFault, te.Message, te);
client.Abort();
}
catch (CommunicationException ce)
{
RecordResult(task, TaskResult.RecoverableFault, ce.Message, ce);
client.Abort();
}
catch (Exception ex)
{
RecordResult(task, TaskResult.FatalError, ex.Message, ex);
client.Abort();
throw;
}
}
public void Execute(ScheduledTask task, ThreadController controller)
{
controller.Wait();
task.Status = TaskStatus.Running;
_repository.Save(task);
var client = CreateClient(task);
controller.Wait();
try
{
client.Open();
var result = client.Execute();
client.Close();
RecordResult(task, result.Result, result.Message);
}
catch(TimeoutException te)
{
RecordResult(task, TaskResult.RecoverableFault, te.Message, te);
client.Abort();
}
catch(CommunicationException ce)
{
RecordResult(task, TaskResult.RecoverableFault, ce.Message, ce);
client.Abort();
}
catch(Exception ex)
{
RecordResult(task, TaskResult.FatalError, ex.Message, ex);
client.Abort();
throw;
}
}
public void Poll(ThreadController controller)
{
controller.Wait(); // check for pause/abort
while (true)
{
try
{
var tasks = _repository.GetPendingTasks();
foreach (var task in tasks)
{
var taskToRun = task;
controller.Start(c => _executor.Execute(taskToRun, controller));
}
}
finally
{
// TODO: configurable polling interval
controller.Wait(TimeSpan.FromMinutes(1));
}
}
}
public void Poll(ThreadController controller)
{
controller.Wait(); // check for pause/abort
while(true)
{
try
{
var tasks = _repository.GetPendingTasks();
foreach(var task in tasks)
{
var taskToRun = task;
controller.Start(c => _executor.Execute(taskToRun, controller));
}
}
finally
{
// TODO: configurable polling interval
controller.Wait(TimeSpan.FromMinutes(1));
}
}
}
public void Wait_OnNonTaskThread_BlocksForActivity()
{
var fail = true;
using (var controller = new ThreadController())
{
controller.Start();
controller.Pause();
Action func = () =>
{
controller.Wait(TimeSpan.FromMilliseconds(50));
fail = true;
};
fail = false;
var result = func.BeginInvoke(null, null);
controller.Stop();
result.AsyncWaitHandle.WaitOne();
Assert.That(fail, Is.False, "Task did not wait properly.");
}
}
public void Stop_PropagatesExceptions()
{
using(var controller = new ThreadController())
{
controller.Add(c => { throw new InvalidOperationException(); });
controller.Add(c => { Thread.Sleep(50); c.Wait(); throw new ArgumentOutOfRangeException(); });
controller.Add(c => { throw new ArgumentNullException(); });
controller.Start();
try
{
controller.Stop();
Assert.Fail("Expected AggregateException.");
}
catch(AggregateException)
{
}
}
}
public void Wait_ThrowsOperationCanceledException_OnStop()
{
var fail = true;
using(var controller = new ThreadController())
{
controller.Add(c =>
{
try
{
Thread.Sleep(100);
c.Wait();
}
catch(OperationCanceledException)
{
fail = false;
}
});
controller.Start();
controller.Stop();
Assert.That(fail, Is.False, "Expected OperationCanceledException");
}
}
public void Wait_WithTimeout_BlocksExecution()
{
var fail = false;
using(var controller = new ThreadController())
{
controller.Add(c =>
{
c.Wait(TimeSpan.FromMilliseconds(100));
fail = true;
});
controller.Add(c => c.Wait());
controller.Start();
Thread.Sleep(50);
controller.Stop();
Assert.That(fail, Is.False);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Scheduler"/> class.
/// </summary>
public Scheduler()
{
_controller = new ThreadController();
_poller = new SchedulePoller();
}
public void Stop_DoesNotPropagate_OperationCanceledExceptions()
{
using(var controller = new ThreadController())
{
controller.Add(c => { Thread.Sleep(50); c.Wait(); });
controller.Add(c => { Thread.Sleep(50); c.Wait(); });
controller.Add(c => { Thread.Sleep(50); throw new OperationCanceledException(); });
controller.Start();
controller.Stop();
}
}
public void Wait_OnNonTaskThread_BlocksForActivity()
{
var fail = true;
using(var controller = new ThreadController())
{
controller.Start();
controller.Pause();
Action func = () =>
{
controller.Wait(TimeSpan.FromMilliseconds(50));
fail = true;
};
fail = false;
var result = func.BeginInvoke(null, null);
controller.Stop();
result.AsyncWaitHandle.WaitOne();
Assert.That(fail, Is.False, "Task did not wait properly.");
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Scheduler"/> class.
/// </summary>
public Scheduler()
{
_controller = new ThreadController();
_poller = new SchedulePoller();
}
public void Start_StartsAllPendingTasks()
{
long[] token = { 0 };
using(var controller = new ThreadController())
{
controller.Add(c => Interlocked.Increment(ref token[0]));
controller.Add(c => Interlocked.Increment(ref token[0]));
controller.Add(c => Interlocked.Increment(ref token[0]));
Assert.That(Interlocked.Read(ref token[0]), Is.EqualTo(0));
controller.Start();
Thread.Sleep(50);
Assert.That(Interlocked.Read(ref token[0]), Is.EqualTo(3));
controller.Stop();
}
}