Publication::Publication(
ClientConductor &conductor,
const std::string &channel,
std::int64_t registrationId,
std::int32_t streamId,
std::int32_t sessionId,
UnsafeBufferPosition& publicationLimit,
LogBuffers &buffers)
:
m_conductor(conductor),
m_logMetaDataBuffer(buffers.atomicBuffer(LogBufferDescriptor::LOG_META_DATA_SECTION_INDEX)),
m_channel(channel),
m_registrationId(registrationId),
m_streamId(streamId),
m_sessionId(sessionId),
m_initialTermId(LogBufferDescriptor::initialTermId(m_logMetaDataBuffer)),
m_maxPayloadLength(LogBufferDescriptor::mtuLength(m_logMetaDataBuffer) - DataFrameHeader::LENGTH),
m_maxMessageLength(FrameDescriptor::computeMaxMessageLength(buffers.atomicBuffer(0).capacity())),
m_positionBitsToShift(util::BitUtil::numberOfTrailingZeroes(buffers.atomicBuffer(0).capacity())),
m_publicationLimit(publicationLimit),
m_headerWriter(LogBufferDescriptor::defaultFrameHeader(m_logMetaDataBuffer))
{
for (int i = 0; i < LogBufferDescriptor::PARTITION_COUNT; i++)
{
/*
* TODO:
* perhaps allow copy-construction and be able to move appenders and AtomicBuffers directly into Publication for
* locality.
*/
m_appenders[i] = std::unique_ptr<TermAppender>(new TermAppender(
buffers.atomicBuffer(i),
buffers.atomicBuffer(LogBufferDescriptor::LOG_META_DATA_SECTION_INDEX),
i));
}
}
Publication::Publication(
ClientConductor &conductor,
const std::string &channel,
std::int64_t registrationId,
std::int32_t streamId,
std::int32_t sessionId,
UnsafeBufferPosition& publicationLimit,
LogBuffers &buffers)
:
m_conductor(conductor),
m_channel(channel),
m_registrationId(registrationId),
m_streamId(streamId),
m_sessionId(sessionId),
m_publicationLimit(publicationLimit),
m_logMetaDataBuffer(buffers.atomicBuffer(LogBufferDescriptor::LOG_META_DATA_SECTION_INDEX))
{
const std::int32_t mtuLength = LogBufferDescriptor::mtuLength(m_logMetaDataBuffer);
std::int32_t capacity = buffers.atomicBuffer(0).capacity();
for (int i = 0; i < LogBufferDescriptor::PARTITION_COUNT; i++)
{
AtomicBuffer defaultFrameHeader = LogBufferDescriptor::defaultFrameHeader(m_logMetaDataBuffer, i);
/*
* TODO:
* perhaps allow copy-construction and be able to move appenders and AtomicBuffers directly into Publication for
* locality.
*/
m_appenders[i] = std::unique_ptr<TermAppender>(new TermAppender(
buffers.atomicBuffer(i),
buffers.atomicBuffer(i + LogBufferDescriptor::PARTITION_COUNT),
defaultFrameHeader,
mtuLength));
}
LogBufferDescriptor::activeTermId(m_logMetaDataBuffer, LogBufferDescriptor::initialTermId(m_logMetaDataBuffer));
m_positionBitsToShift = util::BitUtil::numberOfTrailingZeroes(capacity);
}