public static int GetEstimatedSize(BackplaneMessage msg, bool skipOwner)
{
// this is only a rough size multiplied by two for getting a roughly sized buffer
int size = 2; // two enums
if (!skipOwner)
{
size += msg.OwnerIdentity.Length * 4;
}
size += msg.Key?.Length * 4 ?? 0;
size += msg.Region?.Length * 4 ?? 0;
return(size * 2);
}
private static void SerializeMessage(MessageWriter writer, BackplaneMessage message, bool skipOwner)
{
if (!skipOwner)
{
writer.WriteInt(message.OwnerIdentity.Length);
writer.WriteBytes(message.OwnerIdentity);
}
writer.WriteByte((byte)message.Action);
switch (message.Action)
{
case Changed:
writer.WriteByte((byte)message.ChangeAction);
if (!string.IsNullOrEmpty(message.Region))
{
writer.WriteByte(2);
writer.WriteString(message.Region);
}
else
{
writer.WriteByte(1);
}
writer.WriteString(message.Key);
break;
case Removed:
if (!string.IsNullOrEmpty(message.Region))
{
writer.WriteByte(2);
writer.WriteString(message.Region);
}
else
{
writer.WriteByte(1);
}
writer.WriteString(message.Key);
break;
case ClearRegion:
writer.WriteString(message.Region);
break;
case Clear:
break;
}
}
private void PublishMessage(BackplaneMessage message)
{
var msg = message.Serialize();
lock (this.messageLock)
{
if (message.Action == BackplaneAction.Clear)
{
Interlocked.Exchange(ref this.skippedMessages, this.messages.Count);
this.messages.Clear();
}
if (!this.messages.Add(msg))
{
Interlocked.Increment(ref this.skippedMessages);
if (this.logger.IsEnabled(LogLevel.Trace))
{
this.logger.LogTrace("Skipped duplicate message: {0}.", msg);
}
}
this.SendMessages();
}
}
