public void AbortsCleanly(int concurrency)
{
string result = "";
var mgr = Factory.DistributedMemoryManager;
using (var q = CreateQueue(mgr))
using (CountdownEvent evt = new CountdownEvent(1))
{
Action <string> action = (s) =>
{
lock (this)
{
result += s;
}
// ReSharper disable once AccessToDisposedClosure
evt.Signal( );
};
using (var actioner = new QueueActioner <string>(q, action, concurrency))
{
actioner.Start( );
q.Enqueue("a");
evt.Wait(Timeout);
evt.Reset( );
actioner.Stop( );
Assert.That(result, Is.EqualTo("a"));
}
}
}
public void ExceptionInActionOk( )
{
var mgr = Factory.DistributedMemoryManager;
using (var q = CreateQueue(mgr))
using (CountdownEvent evt = new CountdownEvent(2))
{
Action <string> action = (s) =>
{
// ReSharper disable once AccessToDisposedClosure
evt.Signal( );
};
using (var actioner = new QueueActioner <string>(q, action, 1))
{
actioner.Start( );
q.Enqueue("a");
q.Enqueue("b");
evt.Wait(Timeout);
evt.Reset( );
Assert.That(q.Length, Is.EqualTo(0));
}
}
}
public void ConcurrencyQueueTester(IListeningQueue <string> q, int machineCount, int threadCount, int messagesPerThread)
{
int runCount = 0;
int sentCount = 0;
var actionerList = new List <QueueActioner <string> >(threadCount);
var counter = new CountdownEvent(threadCount * messagesPerThread);
try
{
for (int i = 0; i < machineCount; i++)
{
var actioner = new QueueActioner <string>(q, (s) =>
{
counter.Signal( );
Interlocked.Increment(ref runCount);
}, threadCount);
actionerList.Add(actioner);
actioner.Start( );
Thread.Sleep(500);
}
for (int i = 0; i < messagesPerThread * threadCount; i++)
{
q.Enqueue("");
sentCount++;
}
counter.Wait( );
foreach (var actioner in actionerList)
{
actioner.Stop(1000);
}
if (runCount != sentCount)
{
Debugger.Launch( );
}
Assert.That(runCount, Is.EqualTo(sentCount));
}
finally
{
Debug.WriteLine($"SendCount: {sentCount} - RunCount: {runCount} - Counter: {counter.CurrentCount}");
foreach (var actioner in actionerList)
{
actioner.Dispose();
}
}
}
public void CanRestart(int concurrency)
{
string result = "";
object syncRoot = new object( );
var mgr = Factory.DistributedMemoryManager;
using (var q = CreateQueue(mgr))
using (CountdownEvent evt = new CountdownEvent(1))
{
Action <string> action = (s) =>
{
lock ( syncRoot )
{
Debug.WriteLine($"result: {result}, s: {s}");
result += s;
}
// ReSharper disable once AccessToDisposedClosure
evt.Signal( );
};
using (var actioner = new QueueActioner <string>(q, action, concurrency))
{
actioner.Start( );
q.Enqueue("a");
evt.Wait(Timeout);
evt.Reset( );
var stopped = actioner.Stop(500);
Assert.That(stopped, Is.True);
q.Enqueue("b");
actioner.Start( );
evt.Wait(Timeout);
evt.Reset( );
q.Enqueue("c");
evt.Wait(Timeout);
evt.Reset( );
Assert.That(result, Is.EqualTo("abc"));
}
}
}
public void StoppingStateCorrect(int concurrency)
{
string result = "";
object syncRoot = new object( );
var mgr = Factory.DistributedMemoryManager;
using (var q = CreateQueue(mgr))
using (CountdownEvent evt = new CountdownEvent(1))
{
Action <string> action = (s) =>
{
lock ( syncRoot )
{
result += s;
}
// ReSharper disable once AccessToDisposedClosure
evt.Signal( );
};
using (var actioner = new QueueActioner <string>(q, action, concurrency))
{
actioner.Start( );
q.Enqueue("a");
evt.Wait(Timeout);
evt.Reset( );
var retVal = actioner.Stop(0);
if (!retVal)
{
/////
// By the time we evaluate this statement, the state may have transitioned from Stopping to Stopped.
/////
Assert.IsTrue(actioner.State == ActionerState.Stopping || actioner.State == ActionerState.Stopped);
}
Assert.That(actioner.Stop(200), Is.True);
Assert.That(actioner.State, Is.EqualTo(ActionerState.Stopped));
Assert.That(result, Is.EqualTo("a"));
}
}
}
public void ProcessInitialEntries(int concurrency)
{
string result = "";
object syncRoot = new object( );
var mgr = Factory.DistributedMemoryManager;
using (var q = CreateQueue(mgr))
using (CountdownEvent evt = new CountdownEvent(6))
{
Action <string> action = (s) =>
{
lock ( syncRoot )
{
result += s;
}
// ReSharper disable once AccessToDisposedClosure
evt.Signal( );
};
using (var actioner = new QueueActioner <string>(q, action, concurrency))
{
q.Enqueue("a");
q.Enqueue("b");
q.Enqueue("c");
q.Enqueue("d");
q.Enqueue("e");
q.Enqueue("f");
actioner.Start( );
evt.Wait( );
Assert.That(q.Length, Is.EqualTo(0));
Assert.That(result.Length, Is.EqualTo(6));
Assert.That(result, Is.StringContaining("a"));
Assert.That(result, Is.StringContaining("b"));
Assert.That(result, Is.StringContaining("c"));
Assert.That(result, Is.StringContaining("d"));
Assert.That(result, Is.StringContaining("e"));
Assert.That(result, Is.StringContaining("f"));
}
}
}
public void DoubleStartDoesNothing(int concurrency)
{
var mgr = Factory.DistributedMemoryManager;
using (var q = CreateQueue(mgr))
{
Action <string> action = (s) =>
{
};
using (var actioner = new QueueActioner <string>(q, action, concurrency))
{
actioner.Start( );
actioner.Start( );
}
}
}
public void EnqueuingStoppedDoesNothing(int concurrency)
{
string test = null;
var mgr = Factory.DistributedMemoryManager;
using (var q = CreateQueue(mgr))
{
Action <string> action = (s) =>
{
test = s;
};
using (var actioner = new QueueActioner <string>(q, action, concurrency))
{
actioner.Queue.Enqueue("dummy");
Thread.Sleep(50);
Assert.That(test == null);
}
}
}
public void GoldenPath(int concurrency)
{
string result = "";
object syncRoot = new object( );
var mgr = Factory.DistributedMemoryManager;
using (var q = CreateQueue(mgr))
using (CountdownEvent evt = new CountdownEvent(1))
{
Action <string> action = (s) =>
{
lock ( syncRoot )
{
result += s;
}
// ReSharper disable once AccessToDisposedClosure
evt.Signal( );
};
using (var actioner = new QueueActioner <string>(q, action, concurrency))
{
Assert.That(actioner.State, Is.EqualTo(ActionerState.Stopped));
q.Enqueue("a"); // wont be processed until started
Thread.Sleep(50);
Assert.That(result, Is.Empty);
actioner.Start( );
evt.Wait(Timeout);
evt.Reset( );
Assert.That(result, Is.EqualTo("a"));
q.Enqueue("b");
evt.Wait(Timeout);
evt.Reset( );
Assert.That(result, Is.EqualTo("ab"));
q.Enqueue("c");
evt.Wait(Timeout);
evt.Reset( );
Assert.That(result, Is.EqualTo("abc"));
var stopped = actioner.Stop(500);
Assert.That(stopped, Is.True);
Assert.That(actioner.State, Is.EqualTo(ActionerState.Stopped));
q.Enqueue("d"); // wont be processed
Thread.Sleep(50);
Assert.That(result, Is.EqualTo("abc"));
}
}
}
