public void ShouldAppendFrameToEmptyLog()
{
int headerLength = _defaultHeader.Capacity;
UnsafeBuffer buffer = new UnsafeBuffer(new byte[128]);
const int msgLength = 20;
int frameLength = msgLength + headerLength;
int alignedFrameLength = BitUtil.Align(frameLength, FrameDescriptor.FRAME_ALIGNMENT);
const int tail = 0;
A.CallTo(() => _metaDataBuffer.GetAndAddLong(LogBufferDescriptor.TERM_TAIL_COUNTER_OFFSET, alignedFrameLength)).Returns(TermAppender.Pack(TermID, tail));
Assert.That(_termAppender.AppendUnfragmentedMessage(_headerWriter, buffer, 0, msgLength), Is.EqualTo((long)alignedFrameLength));
A.CallTo(() => _metaDataBuffer.GetAndAddLong(LogBufferDescriptor.TERM_TAIL_COUNTER_OFFSET, alignedFrameLength)).MustHaveHappened()
.Then(A.CallTo(() => _headerWriter.Write(_termBuffer, tail, frameLength, TermID)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutBytes(headerLength, buffer, 0, msgLength)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutIntOrdered(tail, frameLength)).MustHaveHappened());
}
/// <inheritdoc />
public override long Offer(IDirectBuffer buffer, int offset, int length, ReservedValueSupplier reservedValueSupplier = null)
{
long newPosition = CLOSED;
if (!_isClosed)
{
long limit = _positionLimit.GetVolatile();
int termCount = LogBufferDescriptor.ActiveTermCount(_logMetaDataBuffer);
TermAppender termAppender = _termAppenders[LogBufferDescriptor.IndexByTermCount(termCount)];
long rawTail = termAppender.RawTailVolatile();
long termOffset = rawTail & 0xFFFF_FFFFL;
int termId = LogBufferDescriptor.TermId(rawTail);
long position = LogBufferDescriptor.ComputeTermBeginPosition(termId, PositionBitsToShift, InitialTermId) + termOffset;
if (termCount != (termId - InitialTermId))
{
return(ADMIN_ACTION);
}
if (position < limit)
{
int resultingOffset;
if (length <= MaxPayloadLength)
{
CheckPositiveLength(length);
resultingOffset = termAppender.AppendUnfragmentedMessage(
_headerWriter,
buffer,
offset,
length,
reservedValueSupplier,
termId);
}
else
{
CheckMaxMessageLength(length);
resultingOffset = termAppender.AppendFragmentedMessage(
_headerWriter,
buffer,
offset,
length,
MaxPayloadLength,
reservedValueSupplier,
termId);
}
newPosition = NewPosition(termCount, (int)termOffset, termId, position, resultingOffset);
}
else
{
newPosition = BackPressureStatus(position, length);
}
}
return(newPosition);
}
public void ShouldAppendFrameToEmptyLog()
{
int headerLength = _defaultHeader.Capacity;
UnsafeBuffer buffer = new UnsafeBuffer(new byte[128]);
const int msgLength = 20;
int frameLength = msgLength + headerLength;
int alignedFrameLength = BitUtil.Align(frameLength, FrameDescriptor.FRAME_ALIGNMENT);
const int tail = 0;
_logMetaDataBuffer.PutLong(TermTailCounterOffset, LogBufferDescriptor.PackTail(TermID, tail));
Assert.That(_termAppender.AppendUnfragmentedMessage(_headerWriter, buffer, 0, msgLength, RVS), Is.EqualTo((long)alignedFrameLength));
Assert.AreEqual(LogBufferDescriptor.RawTailVolatile(_logMetaDataBuffer, PartionIndex), LogBufferDescriptor.PackTail(TermID, tail + alignedFrameLength));
A.CallTo(() => _headerWriter.Write(_termBuffer, tail, frameLength, TermID)).MustHaveHappened()
.Then(A.CallTo(() => _termBuffer.PutBytes(headerLength, buffer, 0, msgLength)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutLong(tail + DataHeaderFlyweight.RESERVED_VALUE_OFFSET, RV)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutIntOrdered(tail, frameLength)).MustHaveHappened());
}
