/// <summary>
/// Applies Capacity+1 times the same test to the same buffer "logical" content but with
/// different internal offsets each time.
/// The "logical" initial buffer content is restored each time and at the end of the test.
/// </summary>
static void TestWithInternalOffsets <T>(FIFOBuffer <T> f, Action <FIFOBuffer <T> > testPredicate)
{
var saved = f.ToArray();
for (int iTry = 0; iTry <= f.Capacity; ++iTry)
{
f.Clear();
for (int i = 0; i < iTry; ++i)
{
f.Push(default(T));
}
foreach (var i in saved)
{
f.Push(i);
}
while (f.Count > saved.Length)
{
f.Pop();
}
f.SequenceEqual(saved).Should().BeTrue();
testPredicate(f);
}
foreach (var i in saved)
{
f.Push(i);
}
f.Truncate(saved.Length);
}
static void CheckOneValueType <T>(FIFOBuffer <T> f, T value, T otherValue) where T : struct
{
CheckOnlyOneValueType <T>(f, value, otherValue);
f.Pop().Should().Be(value);
AssertEmpty(f);
f.Push(value);
CheckOnlyOneValueType <T>(f, value, otherValue);
}
static void CheckOneValueType <T>(FIFOBuffer <T> f, T value, T otherValue) where T : struct
{
CheckOnlyOneValueType <T>(f, value, otherValue);
Assert.That(f.Pop(), Is.EqualTo(value));
AssertEmpty(f);
f.Push(value);
CheckOnlyOneValueType <T>(f, value, otherValue);
}
private static void AssertEmpty <T>(FIFOBuffer <T> f)
{
Assert.Throws <IndexOutOfRangeException>(() => Console.WriteLine(f[-1]));
Assert.Throws <IndexOutOfRangeException>(() => Console.WriteLine(f[0]));
Assert.Throws <IndexOutOfRangeException>(() => Console.WriteLine(f[1]));
Assert.Throws <InvalidOperationException>(() => f.Pop());
Assert.That(f.Count, Is.EqualTo(0));
Assert.That(f, Is.Empty);
AssertContains(f);
}
/// <summary>
/// Sends the log entry: creates the sender if necessary and manages the buffer.
/// </summary>
/// <param name="monitor">The monitor to use.</param>
/// <param name="logEvent">The log entry to send.</param>
/// <returns>The awaitable.</returns>
/// <exception cref="CKException">
/// If the sender has not been created yet and the application identity is ready
/// but CreateSenderAsync returned null: the exception will remove this handler from the sink's handler list.
/// </exception>
public virtual async ValueTask HandleAsync(IActivityMonitor monitor, IMulticastLogEntry logEvent)
{
if (_sender == null && SenderCanBeCreated)
{
_sender = await CreateSenderAsync(monitor);
if (_sender == null)
{
throw new CKException($"Unable to create the sender.");
}
}
if (_sender != null)
{
if (_buffer.Count > 0)
{
while (_buffer.Count > 0)
{
if (!_sender.IsActuallyConnected || !await _sender.TrySendAsync(monitor, _buffer.Peek()))
{
_buffer.Push(logEvent);
return;
}
_buffer.Pop();
}
}
if (!_sender.IsActuallyConnected || !await _sender.TrySendAsync(monitor, logEvent))
{
_buffer.Push(logEvent);
}
else if (!_firstSuccess)
{
_firstSuccess = true;
if (_buffer.Capacity != _config.LostBufferSize)
{
monitor.Info($"Successfully sent the first logs: resizing buffer from '{_buffer.Capacity}' to '{_config.LostBufferSize}'.");
_buffer.Capacity = _config.LostBufferSize;
}
}
}
else
{
_buffer.Push(logEvent);
}
}
public void FIFO_with_one_and_only_one_Value_Type()
{
FIFOBuffer <int> f = new FIFOBuffer <int>(1);
AssertEmpty(f);
f.Push(5);
CheckOneValueType(f, 5, 50);
f.Pop();
f.Push(0);
CheckOneValueType(f, 0, 5);
f.Push(1);
CheckOneValueType(f, 1, 0);
f.Push(2);
CheckOneValueType(f, 2, 0);
int iType = f.IndexOf(2);
int iBoxed = f.IndexOf((object)2);
iType.Should().Be(iBoxed);
}
public void FIFOOneValueType()
{
FIFOBuffer <int> f = new FIFOBuffer <int>(1);
AssertEmpty(f);
f.Push(5);
CheckOneValueType(f, 5, 50);
f.Pop();
f.Push(0);
CheckOneValueType(f, 0, 5);
f.Push(1);
CheckOneValueType(f, 1, 0);
f.Push(2);
CheckOneValueType(f, 2, 0);
int iType = f.IndexOf(2);
int iBoxed = f.IndexOf((object)2);
Assert.That(iType == iBoxed);
}
