/// <summary>
/// Deserializes this packet from a binary stream.
/// </summary>
/// <param name="writer">PacketWriter used to deserialize the packet.</param>
/// <param name="since">The minimum version of updates to pack.</param>
public override void Write(PacketWriter writer, ReplicatedVersion since)
{
// Write the version vector only for root element
if (this.Parent == null)
{
writer.Write(this.Version.NodeId);
writer.Write(this.Version);
}
// Write a length (bookmark it)
var bookmark = writer.Position;
writer.Write(0);
// Iterate through the values matching the 'since' constraint
var count = 0;
foreach (var entry in this.Map.Values)
{
// Ignore non-matching versions
if (entry.Version < since.Of(entry.From))
{
continue;
}
// Write the header
writer.Write(entry.Version);
writer.Write(entry.Deleted);
writer.Write(entry.From);
writer.Write(entry.Key);
// Write the value only if we have it
if (!entry.Deleted)
{
// Write the prefix if required
this.WriteValuePrefix(entry.Value, writer);
// Write the value itself
writer.Write(entry.Value, since);
}
// Increment our pack count
count++;
}
// Go back and write the final count
var last = writer.Position;
writer.Position = bookmark;
writer.Write(count);
writer.Position = last;
}
/// <summary>
/// Attempts to update the version vector.
/// </summary>
/// <param name="other">The other vector.</param>
/// <returns></returns>
public bool TryUpdate(ReplicatedVersion other)
{
// Go through all the other vectors
var newer = false;
foreach (var kvp in other.Vector)
{
if (kvp.Key == this.NodeId)
{
continue;
}
var v1 = this.Of(kvp.Key);
var v2 = kvp.Value;
if (v2 > v1)
{
this.Vector[kvp.Key] = kvp.Value;
newer = true;
}
}
// We updated something
return(newer);
}
/// <summary> /// Deserializes this packet from a binary stream. /// </summary> /// <param name="writer">PacketWriter used to deserialize the packet.</param> /// <param name="since">The minimum version of updates to pack.</param> public abstract void Write(PacketWriter writer, ReplicatedVersion since);
