/// <summary>
/// Append a padding record log of a given length to make up the log to a position.
/// </summary>
/// <param name="length"> of the range to claim, in bytes.. </param>
/// <returns> The new stream position, otherwise a negative error value of <seealso cref="Publication.NOT_CONNECTED"/>,
/// <seealso cref="Publication.BACK_PRESSURED"/>, <seealso cref="Publication.ADMIN_ACTION"/>, <seealso cref="Publication.CLOSED"/>, or <seealso cref="Publication.MAX_POSITION_EXCEEDED"/>. </returns>
/// <exception cref="ArgumentException"> if the length is greater than <seealso cref="Publication.MaxMessageLength"/>. </exception>
public long AppendPadding(int length)
{
CheckMaxMessageLength(length);
long newPosition = CLOSED;
if (!_isClosed)
{
long limit = _positionLimit.GetVolatile();
ExclusiveTermAppender termAppender = _termAppenders[_activePartitionIndex];
long position = _termBeginPosition + _termOffset;
if (position < limit)
{
CheckPositiveLength(length);
int result = termAppender.AppendPadding(_termId, _termOffset, _headerWriter, length);
newPosition = NewPosition(result);
}
else
{
newPosition = BackPressureStatus(position, length);
}
}
return(newPosition);
}
/// <summary>
/// Offer a block of pre-formatted message fragments directly into the current term.
/// </summary>
/// <param name="buffer"> containing the pre-formatted block of message fragments. </param>
/// <param name="offset"> offset in the buffer at which the first fragment begins. </param>
/// <param name="length"> in bytes of the encoded block. </param>
/// <returns> The new stream position, otherwise a negative error value of <seealso cref="Publication.NOT_CONNECTED"/>,
/// <seealso cref="Publication.BACK_PRESSURED"/>, <seealso cref="Publication.ADMIN_ACTION"/>, <seealso cref="Publication.CLOSED"/>,
/// or <seealso cref="Publication.MAX_POSITION_EXCEEDED"/>. </returns>
/// <exception cref="ArgumentException"> if the length is greater than remaining size of the current term. </exception>
/// <exception cref="ArgumentException"> if the first frame within the block is not properly formatted, i.e. if the
/// <code>streamId</code> is not equal to the value returned by the <seealso cref="Publication.StreamId"/>
/// method or if the <code>sessionId</code> is not equal to the value returned by the
/// <seealso cref="Publication.SessionId"/> method or if the frame type is not equal to the
/// <seealso cref="HeaderFlyweight.HDR_TYPE_DATA"/>. </exception>
public long OfferBlock(IMutableDirectBuffer buffer, int offset, int length)
{
if (IsClosed)
{
return(CLOSED);
}
if (_termOffset >= TermBufferLength)
{
RotateTerm();
}
long limit = _positionLimit.GetVolatile();
long position = _termBeginPosition + _termOffset;
if (position < limit)
{
CheckBlockLength(length);
CheckFirstFrame(buffer, offset);
ExclusiveTermAppender termAppender = _termAppenders[_activePartitionIndex];
int result = termAppender.AppendBlock(_termId, _termOffset, buffer, offset, length);
return(NewPosition(result));
}
else
{
return(BackPressureStatus(position, length));
}
}
public long TryClaim(int length, ExclusiveBufferClaim bufferClaim)
{
CheckForMaxPayloadLength(length);
var newPosition = CLOSED;
if (!_isClosed)
{
var limit = _positionLimit.Volatile;
ExclusiveTermAppender termAppender = _termAppenders[_activePartitionIndex];
long position = _termBeginPosition + _termOffset;
if (position < limit)
{
int result = termAppender.Claim(_termId, _termOffset, _headerWriter, length, bufferClaim);
newPosition = NewPosition(result);
}
else if (_conductor.IsPublicationConnected(LogBufferDescriptor.TimeOfLastStatusMessage(_logMetaDataBuffer)))
{
newPosition = BACK_PRESSURED;
}
else
{
newPosition = NOT_CONNECTED;
}
}
return(newPosition);
}
/// <inheritdoc />
public override long Offer(IDirectBuffer bufferOne, int offsetOne, int lengthOne, IDirectBuffer bufferTwo,
int offsetTwo, int lengthTwo, ReservedValueSupplier reservedValueSupplier = null)
{
long newPosition = CLOSED;
if (!_isClosed)
{
long limit = _positionLimit.GetVolatile();
ExclusiveTermAppender termAppender = _termAppenders[_activePartitionIndex];
long position = _termBeginPosition + _termOffset;
int length = ValidateAndComputeLength(lengthOne, lengthTwo);
if (position < limit)
{
int result;
if (length <= MaxPayloadLength)
{
CheckPositiveLength(length);
result = termAppender.AppendUnfragmentedMessage(
_termId,
_termOffset,
_headerWriter,
bufferOne,
offsetOne,
lengthOne,
bufferTwo,
offsetTwo,
lengthTwo,
reservedValueSupplier);
}
else
{
CheckMaxMessageLength(length);
result = termAppender.AppendFragmentedMessage(
_termId,
_termOffset,
_headerWriter,
bufferOne,
offsetOne,
lengthOne,
bufferTwo,
offsetTwo,
lengthTwo,
MaxPayloadLength,
reservedValueSupplier);
}
newPosition = NewPosition(result);
}
else
{
newPosition = BackPressureStatus(position, length);
}
}
return(newPosition);
}
internal ExclusivePublication(
ClientConductor clientConductor,
string channel,
int streamId,
int sessionId,
IReadablePosition positionLimit,
LogBuffers logBuffers,
long originalRegistrationId,
long registrationId)
{
var buffers = logBuffers.TermBuffers();
var logMetaDataBuffer = logBuffers.MetaDataBuffer();
for (var i = 0; i < LogBufferDescriptor.PARTITION_COUNT; i++)
{
_termAppenders[i] = new ExclusiveTermAppender(buffers[i], logMetaDataBuffer, i);
}
var termLength = logBuffers.TermLength();
_termBufferLength = termLength;
MaxPayloadLength = LogBufferDescriptor.MtuLength(logMetaDataBuffer) - DataHeaderFlyweight.HEADER_LENGTH;
MaxMessageLength = FrameDescriptor.ComputeExclusiveMaxMessageLength(termLength);
_maxPossiblePosition = termLength * (1L << 31);
_conductor = clientConductor;
Channel = channel;
StreamId = streamId;
SessionId = sessionId;
_logMetaDataBuffer = logMetaDataBuffer;
_originalRegistrationId = originalRegistrationId;
RegistrationId = registrationId;
_positionLimit = positionLimit;
_logBuffers = logBuffers;
_positionBitsToShift = IntUtil.NumberOfTrailingZeros(termLength);
_headerWriter = new HeaderWriter(LogBufferDescriptor.DefaultFrameHeader(logMetaDataBuffer));
InitialTermId = LogBufferDescriptor.InitialTermId(logMetaDataBuffer);
var activeIndex = LogBufferDescriptor.ActivePartitionIndex(logMetaDataBuffer);
_activePartitionIndex = activeIndex;
long rawTail = LogBufferDescriptor.RawTail(_logMetaDataBuffer, activeIndex);
_termId = LogBufferDescriptor.TermId(rawTail);
_termOffset = LogBufferDescriptor.TermOffset(rawTail, termLength);
_termBeginPosition =
LogBufferDescriptor.ComputeTermBeginPosition(_termId, _positionBitsToShift, InitialTermId);
}
internal ExclusivePublication(
ClientConductor clientConductor,
string channel,
int streamId,
int sessionId,
IReadablePosition positionLimit,
int channelStatusId,
LogBuffers logBuffers,
long originalRegistrationId,
long registrationId)
: base(
clientConductor,
channel,
streamId,
sessionId,
positionLimit,
channelStatusId,
logBuffers,
originalRegistrationId,
registrationId,
FrameDescriptor.ComputeExclusiveMaxMessageLength(logBuffers.TermLength())
)
{
var buffers = logBuffers.DuplicateTermBuffers();
var logMetaDataBuffer = logBuffers.MetaDataBuffer();
for (var i = 0; i < LogBufferDescriptor.PARTITION_COUNT; i++)
{
_termAppenders[i] = new ExclusiveTermAppender(buffers[i], logMetaDataBuffer, i);
}
var termCount = LogBufferDescriptor.ActiveTermCount(logMetaDataBuffer);
var index = LogBufferDescriptor.IndexByTermCount(termCount);
_activePartitionIndex = index;
var rawTail = LogBufferDescriptor.RawTail(_logMetaDataBuffer, index);
_termId = LogBufferDescriptor.TermId(rawTail);
_termOffset = LogBufferDescriptor.TermOffset(rawTail);
_termBeginPosition =
LogBufferDescriptor.ComputeTermBeginPosition(_termId, _positionBitsToShift, InitialTermId);
}
/// <inheritdoc />
public override long Offer(DirectBufferVector[] vectors, ReservedValueSupplier reservedValueSupplier = null)
{
int length = DirectBufferVector.ValidateAndComputeLength(vectors);
var newPosition = CLOSED;
if (!_isClosed)
{
var limit = _positionLimit.GetVolatile();
ExclusiveTermAppender termAppender = _termAppenders[_activePartitionIndex];
long position = _termBeginPosition + _termOffset;
if (position < limit)
{
int result;
if (length <= MaxPayloadLength)
{
result = termAppender.AppendUnfragmentedMessage(
_termId, _termOffset, _headerWriter, vectors, length, reservedValueSupplier);
}
else
{
CheckMaxMessageLength(length);
result = termAppender.AppendFragmentedMessage(
_termId,
_termOffset,
_headerWriter,
vectors,
length,
MaxPayloadLength,
reservedValueSupplier);
}
newPosition = NewPosition(result);
}
else
{
newPosition = BackPressureStatus(position, length);
}
}
return(newPosition);
}
public long Offer(
UnsafeBuffer buffer,
int offset,
int length,
ReservedValueSupplier reservedValueSupplier = null)
{
var newPosition = CLOSED;
if (!_isClosed)
{
var limit = _positionLimit.Volatile;
ExclusiveTermAppender termAppender = _termAppenders[_activePartitionIndex];
long position = _termBeginPosition + this._termOffset;
if (position < limit)
{
int result;
if (length <= MaxPayloadLength)
{
result = termAppender.AppendUnfragmentedMessage(_termId, _termOffset, _headerWriter, buffer, offset, length, reservedValueSupplier);
}
else
{
CheckForMaxMessageLength(length);
result = termAppender.AppendFragmentedMessage(_termId, _termOffset, _headerWriter, buffer, offset, length, MaxPayloadLength, reservedValueSupplier);
}
newPosition = NewPosition(result);
}
else if (_conductor.IsPublicationConnected(LogBufferDescriptor.TimeOfLastStatusMessage(_logMetaDataBuffer)))
{
newPosition = BACK_PRESSURED;
}
else
{
newPosition = NOT_CONNECTED;
}
}
return(newPosition);
}
public long Offer(
UnsafeBuffer buffer,
int offset,
int length,
ReservedValueSupplier reservedValueSupplier = null)
{
var newPosition = CLOSED;
if (!_isClosed)
{
var limit = _positionLimit.Volatile;
ExclusiveTermAppender termAppender = _termAppenders[_activePartitionIndex];
long position = _termBeginPosition + _termOffset;
if (position < limit)
{
int result;
if (length <= MaxPayloadLength)
{
result = termAppender.AppendUnfragmentedMessage(_termId, _termOffset, _headerWriter, buffer,
offset, length, reservedValueSupplier);
}
else
{
CheckForMaxMessageLength(length);
result = termAppender.AppendFragmentedMessage(_termId, _termOffset, _headerWriter, buffer,
offset, length, MaxPayloadLength, reservedValueSupplier);
}
newPosition = NewPosition(result);
}
else
{
newPosition = BackPressureStatus(position, length);
}
}
return(newPosition);
}
public override long TryClaim(int length, BufferClaim bufferClaim)
{
CheckPayloadLength(length);
var newPosition = CLOSED;
if (!_isClosed)
{
var limit = _positionLimit.GetVolatile();
ExclusiveTermAppender termAppender = _termAppenders[_activePartitionIndex];
long position = _termBeginPosition + _termOffset;
if (position < limit)
{
int result = termAppender.Claim(_termId, _termOffset, _headerWriter, length, bufferClaim);
newPosition = NewPosition(result);
}
else
{
newPosition = BackPressureStatus(position, length);
}
}
return(newPosition);
}
