public void ShouldFragmentMessageOverTwoFrames()
{
int msgLength = MaxPayloadLength + 1;
int headerLength = _defaultHeader.Capacity;
int frameLength = headerLength + 1;
int requiredCapacity = BitUtil.Align(headerLength + 1, FrameDescriptor.FRAME_ALIGNMENT) + MaxFrameLength;
UnsafeBuffer buffer = new UnsafeBuffer(new byte[msgLength]);
int tail = 0;
_logMetaDataBuffer.PutLong(TermTailCounterOffset, LogBufferDescriptor.PackTail(TermID, tail));
Assert.That(_termAppender.AppendFragmentedMessage(_headerWriter, buffer, 0, msgLength, MaxPayloadLength, RVS, TermID), Is.EqualTo(requiredCapacity));
Assert.AreEqual(LogBufferDescriptor.RawTailVolatile(_logMetaDataBuffer, PartionIndex), LogBufferDescriptor.PackTail(TermID, tail + requiredCapacity));
A.CallTo(() => _headerWriter.Write(_termBuffer, tail, MaxFrameLength, TermID)).MustHaveHappened()
.Then(A.CallTo(() => _termBuffer.PutBytes(tail + headerLength, buffer, 0, MaxPayloadLength)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutByte(FrameDescriptor.FlagsOffset(tail), FrameDescriptor.BEGIN_FRAG_FLAG)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutLong(tail + DataHeaderFlyweight.RESERVED_VALUE_OFFSET, RV, ByteOrder.LittleEndian)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutIntOrdered(tail, MaxFrameLength)).MustHaveHappened())
.Then(A.CallTo(() => _headerWriter.Write(_termBuffer, MaxFrameLength, frameLength, TermID)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutBytes(MaxFrameLength + headerLength, buffer, MaxPayloadLength, 1)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutByte(FrameDescriptor.FlagsOffset(MaxFrameLength), FrameDescriptor.END_FRAG_FLAG)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutLong(MaxFrameLength + DataHeaderFlyweight.RESERVED_VALUE_OFFSET, RV, ByteOrder.LittleEndian)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutIntOrdered(MaxFrameLength, frameLength)).MustHaveHappened());
}
public void ShouldFragmentMessageOverTwoFrames()
{
int msgLength = MaxPayloadLength + 1;
int headerLength = _defaultHeader.Capacity;
int frameLength = headerLength + 1;
int requiredCapacity = BitUtil.Align(headerLength + 1, FrameDescriptor.FRAME_ALIGNMENT) + MaxFrameLength;
UnsafeBuffer buffer = new UnsafeBuffer(new byte[msgLength]);
int tail = 0;
A.CallTo(() => _metaDataBuffer.GetAndAddLong(LogBufferDescriptor.TERM_TAIL_COUNTER_OFFSET, requiredCapacity)).Returns(TermAppender.Pack(TermID, tail));
Assert.That(_termAppender.AppendFragmentedMessage(_headerWriter, buffer, 0, msgLength, MaxPayloadLength, RVS), Is.EqualTo((long)requiredCapacity));
A.CallTo(() => _metaDataBuffer.GetAndAddLong(LogBufferDescriptor.TERM_TAIL_COUNTER_OFFSET, requiredCapacity)).MustHaveHappened()
.Then(A.CallTo(() => _headerWriter.Write(_termBuffer, tail, MaxFrameLength, TermID)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutBytes(tail + headerLength, buffer, 0, MaxPayloadLength)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutByte(FrameDescriptor.FlagsOffset(tail), FrameDescriptor.BEGIN_FRAG_FLAG)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutLong(tail + DataHeaderFlyweight.RESERVED_VALUE_OFFSET, RV)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutIntOrdered(tail, MaxFrameLength)).MustHaveHappened())
.Then(A.CallTo(() => _headerWriter.Write(_termBuffer, MaxFrameLength, frameLength, TermID)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutBytes(MaxFrameLength + headerLength, buffer, MaxPayloadLength, 1)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutByte(FrameDescriptor.FlagsOffset(MaxFrameLength), FrameDescriptor.END_FRAG_FLAG)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutLong(MaxFrameLength + DataHeaderFlyweight.RESERVED_VALUE_OFFSET, RV)).MustHaveHappened())
.Then(A.CallTo(() => _termBuffer.PutIntOrdered(MaxFrameLength, 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);
}