private void PutLabel(int recordOffset, string label)
{
if (Encoding.ASCII.Equals(LabelCharset))
{
int length = MetaDataBuffer.PutStringWithoutLengthAscii(recordOffset + LABEL_OFFSET + BitUtil.SIZE_OF_INT, label, 0, MAX_LABEL_LENGTH);
MetaDataBuffer.PutInt(recordOffset + LABEL_OFFSET, length);
}
else
{
byte[] bytes = LabelCharset.GetBytes(label);
int length = Math.Min(bytes.Length, MAX_LABEL_LENGTH);
MetaDataBuffer.PutInt(recordOffset + LABEL_OFFSET, length);
MetaDataBuffer.PutBytes(recordOffset + LABEL_OFFSET + BitUtil.SIZE_OF_INT, bytes, 0, length);
}
}
/// <summary>
/// Allocate a counter with the minimum of allocation by allowing the label an key to be provided and copied.
/// <para>
/// If the keyBuffer is null then a copy of the key is not attempted.
///
/// </para>
/// </summary>
/// <param name="typeId"> for the counter. </param>
/// <param name="keyBuffer"> containing the optional key for the counter. </param>
/// <param name="keyOffset"> within the keyBuffer at which the key begins. </param>
/// <param name="keyLength"> of the key in the keyBuffer. </param>
/// <param name="labelBuffer"> containing the mandatory label for the counter. </param>
/// <param name="labelOffset"> within the labelBuffer at which the label begins. </param>
/// <param name="labelLength"> of the label in the labelBuffer. </param>
/// <returns> the id allocated for the counter. </returns>
public int Allocate(int typeId, IDirectBuffer keyBuffer, int keyOffset, int keyLength, IDirectBuffer labelBuffer, int labelOffset, int labelLength)
{
int counterId = NextCounterId();
if ((CounterOffset(counterId) + COUNTER_LENGTH) > ValuesBuffer.Capacity)
{
throw new InvalidOperationException("Unable to allocated counter, values buffer is full");
}
int recordOffset = MetaDataOffset(counterId);
if ((recordOffset + METADATA_LENGTH) > MetaDataBuffer.Capacity)
{
throw new InvalidOperationException("Unable to allocate counter, labels buffer is full");
}
try
{
MetaDataBuffer.PutInt(recordOffset + TYPE_ID_OFFSET, typeId);
int length;
if (null != keyBuffer)
{
length = Math.Min(keyLength, MAX_KEY_LENGTH);
MetaDataBuffer.PutBytes(recordOffset + KEY_OFFSET, keyBuffer, keyOffset, length);
}
length = Math.Min(labelLength, MAX_LABEL_LENGTH);
MetaDataBuffer.PutInt(recordOffset + LABEL_OFFSET, length);
MetaDataBuffer.PutBytes(recordOffset + LABEL_OFFSET + BitUtil.SIZE_OF_INT, labelBuffer, labelOffset, length);
MetaDataBuffer.PutIntOrdered(recordOffset, RECORD_ALLOCATED);
}
catch (Exception)
{
_freeList.Enqueue(counterId);
throw;
}
return(counterId);
}
private void PutLabel(int recordOffset, string label)
{
if (Encoding.ASCII.Equals(LabelCharset))
{
MetaDataBuffer.PutStringAscii(recordOffset + LABEL_OFFSET, label.Length > MAX_LABEL_LENGTH ? label.Substring(0, MAX_LABEL_LENGTH) : label);
}
else
{
byte[] bytes = LabelCharset.GetBytes(label);
if (bytes.Length > MAX_LABEL_LENGTH)
{
MetaDataBuffer.PutInt(recordOffset + LABEL_OFFSET, MAX_LABEL_LENGTH);
MetaDataBuffer.PutBytes(recordOffset + LABEL_OFFSET + BitUtil.SIZE_OF_INT, bytes, 0, MAX_LABEL_LENGTH);
}
else
{
MetaDataBuffer.PutInt(recordOffset + LABEL_OFFSET, bytes.Length);
MetaDataBuffer.PutBytes(recordOffset + LABEL_OFFSET + BitUtil.SIZE_OF_INT, bytes);
}
}
}
/// <summary>
/// Allocate a counter with the minimum of allocation by allowing the label an key to be provided and copied.
/// <para>
/// If the keyBuffer is null then a copy of the key is not attempted.
///
/// </para>
/// </summary>
/// <param name="typeId"> for the counter. </param>
/// <param name="keyBuffer"> containing the optional key for the counter. </param>
/// <param name="keyOffset"> within the keyBuffer at which the key begins. </param>
/// <param name="keyLength"> of the key in the keyBuffer. </param>
/// <param name="labelBuffer"> containing the mandatory label for the counter. </param>
/// <param name="labelOffset"> within the labelBuffer at which the label begins. </param>
/// <param name="labelLength"> of the label in the labelBuffer. </param>
/// <returns> the id allocated for the counter. </returns>
public int Allocate(int typeId, IDirectBuffer keyBuffer, int keyOffset, int keyLength, IDirectBuffer labelBuffer, int labelOffset, int labelLength)
{
int counterId = NextCounterId();
CheckCountersCapacity(counterId);
int recordOffset = MetaDataOffset(counterId);
CheckMetaDataCapacity(recordOffset);
try
{
MetaDataBuffer.PutInt(recordOffset + TYPE_ID_OFFSET, typeId);
MetaDataBuffer.PutLong(recordOffset + FREE_FOR_REUSE_DEADLINE_OFFSET, NOT_FREE_TO_REUSE);
int length;
if (null != keyBuffer)
{
length = Math.Min(keyLength, MAX_KEY_LENGTH);
MetaDataBuffer.PutBytes(recordOffset + KEY_OFFSET, keyBuffer, keyOffset, length);
}
length = Math.Min(labelLength, MAX_LABEL_LENGTH);
MetaDataBuffer.PutInt(recordOffset + LABEL_OFFSET, length);
MetaDataBuffer.PutBytes(recordOffset + LABEL_OFFSET + BitUtil.SIZE_OF_INT, labelBuffer, labelOffset, length);
MetaDataBuffer.PutIntOrdered(recordOffset, RECORD_ALLOCATED);
}
catch (Exception)
{
_freeList.Add(counterId);
throw;
}
return(counterId);
}
