/// <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_supports_Peek_and_PeekLast()
{
FIFOBuffer <int> f = new FIFOBuffer <int>(0);
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(f[-1]));
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(f[0]));
Assert.Throws <InvalidOperationException>(() => f.Peek());
Assert.Throws <InvalidOperationException>(() => f.PeekLast());
f.Push(5);
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(f[0]));
Assert.Throws <InvalidOperationException>(() => f.Peek());
Assert.Throws <InvalidOperationException>(() => f.PeekLast());
f.Capacity = 1;
TestWithInternalOffsets(f, b =>
{
b.Push(5);
Assert.That(b[0], Is.EqualTo(5));
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(b[1]));
Assert.That(b.Peek(), Is.EqualTo(5));
Assert.That(b.PeekLast(), Is.EqualTo(5));
b.Push(6);
Assert.That(b[0], Is.EqualTo(6), "Only one item in it.");
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(b[1]));
Assert.That(b.Peek(), Is.EqualTo(6));
Assert.That(b.PeekLast(), Is.EqualTo(6));
});
f.Clear();
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(f[0]));
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(f[1]));
Assert.Throws <InvalidOperationException>(() => f.Peek());
Assert.Throws <InvalidOperationException>(() => f.PeekLast());
f.Capacity = 2;
TestWithInternalOffsets(f, b =>
{
b.Push(5);
Assert.That(b[0], Is.EqualTo(5));
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(b[1]));
Assert.That(b.Peek(), Is.EqualTo(5));
Assert.That(b.PeekLast(), Is.EqualTo(5));
b.Push(6);
Assert.That(b[0], Is.EqualTo(5));
Assert.That(b[1], Is.EqualTo(6));
Assert.That(b.Peek(), Is.EqualTo(5));
Assert.That(b.PeekLast(), Is.EqualTo(6));
b.Pop();
Assert.That(b[0], Is.EqualTo(6));
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(b[1]));
Assert.That(b.Peek(), Is.EqualTo(6));
Assert.That(b.PeekLast(), Is.EqualTo(6));
b.Pop();
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(b[0]));
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(b[1]));
Assert.Throws <InvalidOperationException>(() => b.Peek());
Assert.Throws <InvalidOperationException>(() => b.PeekLast());
b.Push(7);
b.Push(8);
b.Push(9);
Assert.That(b[0], Is.EqualTo(8));
Assert.That(b[1], Is.EqualTo(9));
CollectionAssert.AreEqual(b.ToArray(), new int[] { 8, 9 });
Assert.That(b.Peek(), Is.EqualTo(8));
Assert.That(b.PeekLast(), Is.EqualTo(9));
Assert.That(b.Pop(), Is.EqualTo(8));
Assert.That(b.Pop(), Is.EqualTo(9));
AssertEmpty(b);
b.Push(10);
b.Push(11);
b.Push(12);
Assert.That(b[0], Is.EqualTo(11));
Assert.That(b[1], Is.EqualTo(12));
Assert.That(b.Peek(), Is.EqualTo(11));
Assert.That(b.PeekLast(), Is.EqualTo(12));
Assert.That(b.PopLast(), Is.EqualTo(12));
Assert.That(b.Peek(), Is.EqualTo(11));
Assert.That(b.PeekLast(), Is.EqualTo(11));
Assert.That(b.PopLast(), Is.EqualTo(11));
AssertEmpty(b);
});
f.Capacity = 3;
TestWithInternalOffsets(f, b =>
{
b.Push(11);
b.Push(12);
b.Push(13);
Assert.That(b[0], Is.EqualTo(11));
Assert.That(b[1], Is.EqualTo(12));
Assert.That(b[2], Is.EqualTo(13));
});
f.Capacity = 4;
f.Push(11);
f.Push(12);
f.Push(13);
TestWithInternalOffsets(f, b =>
{
b.Push(14);
Assert.That(b[0], Is.EqualTo(11));
Assert.That(b[1], Is.EqualTo(12));
Assert.That(b[2], Is.EqualTo(13));
Assert.That(b[3], Is.EqualTo(14));
b.Push(15);
Assert.That(b[0], Is.EqualTo(12));
Assert.That(b[1], Is.EqualTo(13));
Assert.That(b[2], Is.EqualTo(14));
Assert.That(b[3], Is.EqualTo(15));
b.Push(16);
Assert.That(b[0], Is.EqualTo(13));
Assert.That(b[1], Is.EqualTo(14));
Assert.That(b[2], Is.EqualTo(15));
Assert.That(b[3], Is.EqualTo(16));
});
f.Capacity = 5;
AssertContains(f, 11, 12, 13);
TestWithInternalOffsets(f, b =>
{
b.Push(14);
b.Push(15);
b.Push(16);
b.Push(17);
Assert.That(b[0], Is.EqualTo(13));
Assert.That(b[1], Is.EqualTo(14));
Assert.That(b[2], Is.EqualTo(15));
Assert.That(b[3], Is.EqualTo(16));
Assert.That(b[4], Is.EqualTo(17));
Assert.Throws <IndexOutOfRangeException>(() => Console.Write(f[5]));
});
}