/// <summary>
/// Merges two receive buffers. Merging preserves sequencing of messages, and drops all messages that has been
/// safely acknowledged by any of the participating buffers. Also updates the expected sequence numbers.
/// </summary>
/// <param name="other">The receive buffer to merge with</param>
/// <returns>The merged receive buffer</returns>
public AckedReceiveBuffer <T> MergeFrom(AckedReceiveBuffer <T> other)
{
var mergedLastDelivered = SeqNo.Max(this.LastDelivered, other.LastDelivered);
Buf.UnionWith(other.Buf);
Buf.RemoveWhere(x => x.Seq < mergedLastDelivered);
return(Copy(mergedLastDelivered, SeqNo.Max(this.CumulativeAck, other.CumulativeAck), Buf));
}
/// <summary>
/// Puts a sequenced message in the receive buffer returning a new buffer.
/// </summary>
/// <param name="arrivedMsg">Message to be put into the buffer</param>
/// <returns>The updated buffer containing the message</returns>
public AckedReceiveBuffer <T> Receive(T arrivedMsg)
{
if (arrivedMsg.Seq > LastDelivered && !Buf.Contains(arrivedMsg))
{
Buf.Add(arrivedMsg);
}
return(Copy(cumulativeAck: SeqNo.Max(arrivedMsg.Seq, CumulativeAck),
buffer: Buf));
}
/// <summary>
/// Merges two receive buffers. Merging preserves sequencing of messages, and drops all messages that has been
/// safely acknowledged by any of the participating buffers. Also updates the expected sequence numbers.
/// </summary>
/// <param name="other">The receive buffer to merge with</param>
/// <returns>The merged receive buffer</returns>
public AckedReceiveBuffer <T> MergeFrom(AckedReceiveBuffer <T> other)
{
var mergedLastDelivered = SeqNo.Max(this.LastDelivered, other.LastDelivered);
return(Copy(mergedLastDelivered, SeqNo.Max(this.CumulativeAck, other.CumulativeAck), Buf.Union(other.Buf).Where(x => x.Seq > mergedLastDelivered).ToImmutableSortedSet(Comparer)));
}