/// <summary>
/// Append pre-formatted block of message fragments into the term buffer.
/// <para>
/// <em>WARNING: This is internal API used by {@code ExclusivePublication#offerBlock} method.</em>
/// </para>
/// </summary>
/// <param name="termId"> for the current term. </param>
/// <param name="termOffset"> in the term at which to append. </param>
/// <param name="buffer"> which contains block of messages. </param>
/// <param name="offset"> within the buffer at which the block begins. </param>
/// <param name="length"> of the block in bytes (always aligned). </param>
/// <returns> the resulting offset of the term after success otherwise <seealso cref="FAILED"/>. </returns>
public int AppendBlock(int termId, int termOffset, IMutableDirectBuffer buffer, int offset, int length)
{
int resultingOffset = termOffset + length;
int lengthOfFirstFrame = buffer.GetInt(offset, ByteOrder.LittleEndian);
buffer.PutInt(offset, 0, ByteOrder.LittleEndian);
_termBuffer.PutBytes(termOffset, buffer, offset, length);
FrameDescriptor.FrameLengthOrdered(_termBuffer, termOffset, lengthOfFirstFrame);
PutRawTailOrdered(termId, resultingOffset);
return(resultingOffset);
}
private void CheckFirstFrame(IMutableDirectBuffer buffer, int offset)
{
int frameType = HeaderFlyweight.HDR_TYPE_DATA;
int blockTermOffset = buffer.GetInt(offset + DataHeaderFlyweight.TERM_OFFSET_FIELD_OFFSET,
ByteOrder.LittleEndian);
int blockSessionId =
buffer.GetInt(offset + DataHeaderFlyweight.SESSION_ID_FIELD_OFFSET, ByteOrder.LittleEndian);
int blockStreamId =
buffer.GetInt(offset + DataHeaderFlyweight.STREAM_ID_FIELD_OFFSET, ByteOrder.LittleEndian);
int blockTermId = buffer.GetInt(offset + DataHeaderFlyweight.TERM_ID_FIELD_OFFSET, ByteOrder.LittleEndian);
int blockFrameType = buffer.GetShort(offset + HeaderFlyweight.TYPE_FIELD_OFFSET, ByteOrder.LittleEndian) &
0xFFFF;
if (blockTermOffset != _termOffset || blockSessionId != SessionId || blockStreamId != StreamId ||
blockTermId != _termId || frameType != blockFrameType)
{
throw new ArgumentException("improperly formatted block:" + " termOffset=" + blockTermOffset +
" (expected=" + _termOffset + ")," + " sessionId=" + blockSessionId +
" (expected=" + SessionId + ")," + " streamId=" + blockStreamId +
" (expected=" + StreamId + ")," + " termId=" + blockTermId +
" (expected=" + _termId + ")," + " frameType=" + blockFrameType +
" (expected=" + frameType + ")");
}
}
/// <summary>
/// return session id field
/// </summary>
/// <returns> session id field </returns>
public int SessionId()
{
return(_buffer.GetInt(_offset + SESSION_ID_OFFSET));
}
/// <summary>
/// return stream id field
/// </summary>
/// <returns> stream id field </returns>
public int StreamId()
{
return(buffer.GetInt(offset + STREAM_ID_FIELD_OFFSET));
}
/// <summary>
/// Error code for the command.
/// </summary>
/// <returns> error code for the command </returns>
public ErrorCode ErrorCode()
{
return((ErrorCode)_buffer.GetInt(_offset + ERROR_CODE_OFFSET));
}
/// <summary>
/// The counter id
/// </summary>
/// <returns> counter id </returns>
public int CounterId()
{
return(buffer.GetInt(offset + COUNTER_ID_OFFSET));
}
/// <summary>
/// The channel status counter id
/// </summary>
/// <returns> channel status counter id </returns>
public int ChannelStatusCounterId()
{
return(buffer.GetInt(offset + CHANNEL_STATUS_INDICATOR_ID_OFFSET));
}