// Placed object message payload into a segment from a buffer pool. When this get's too big, older blocks will be purged
private ArraySegment <byte> SerializeMessageIntoPooledSegment(MemoryMessageData queueMessage)
{
// serialize payload
int size = SegmentBuilder.CalculateAppendSize(queueMessage.Payload);
// get segment from current block
ArraySegment <byte> segment;
if (currentBuffer == null || !currentBuffer.TryGetSegment(size, out segment))
{
// no block or block full, get new block and try again
currentBuffer = bufferPool.Allocate();
//call EvictionStrategy's OnBlockAllocated method
this.evictionStrategy.OnBlockAllocated(currentBuffer);
// if this fails with clean block, then requested size is too big
if (!currentBuffer.TryGetSegment(size, out segment))
{
string errmsg = String.Format(CultureInfo.InvariantCulture,
"Message size is too big. MessageSize: {0}", size);
throw new ArgumentOutOfRangeException(nameof(queueMessage), errmsg);
}
}
// encode namespace, offset, partitionkey, properties and payload into segment
int writeOffset = 0;
SegmentBuilder.Append(segment, ref writeOffset, queueMessage.Payload);
return(segment);
}
// Placed object message payload into a segment from a buffer pool. When this get's too big, older blocks will be purged
private ArraySegment <byte> SerializeMessageIntoPooledSegment(GeneratedBatchContainer queueMessage)
{
byte[] serializedPayload = this.serializationManager.SerializeToByteArray(queueMessage.Payload);
// get size of namespace, offset, partitionkey, properties, and payload
int size = SegmentBuilder.CalculateAppendSize(serializedPayload);
// get segment
ArraySegment <byte> segment;
if (currentBuffer == null || !currentBuffer.TryGetSegment(size, out segment))
{
// no block or block full, get new block and try again
currentBuffer = bufferPool.Allocate();
//call EvictionStrategy's OnBlockAllocated method
this.evictionStrategy.OnBlockAllocated(currentBuffer);
// if this fails with clean block, then requested size is too big
if (!currentBuffer.TryGetSegment(size, out segment))
{
string errmsg = $"Message size is to big. MessageSize: {size}";
throw new ArgumentOutOfRangeException(nameof(queueMessage), errmsg);
}
}
// encode namespace, offset, partitionkey, properties and payload into segment
int writeOffset = 0;
SegmentBuilder.Append(segment, ref writeOffset, serializedPayload);
return(segment);
}