protected override void WriteFramingExtras(OperationBuilder builder)
{
if (PreserveTtl)
{
Span <byte> preserveTtlByte = stackalloc byte[1];
preserveTtlByte[0] = 5 << 4;
builder.Write(preserveTtlByte);
}
if (DurabilityLevel == DurabilityLevel.None)
{
return;
}
// TODO: omit timeout bytes if no timeout provided
Span <byte> bytes = stackalloc byte[2];
var framingExtra = new FramingExtraInfo(RequestFramingExtraType.DurabilityRequirements, (byte)(bytes.Length - 1));
bytes[0] = framingExtra.Byte;
bytes[1] = (byte)DurabilityLevel;
// TODO: improve timeout, coerce to 1500ms, etc
//var timeout = DurabilityTimeout.HasValue ? DurabilityTimeout.Value.TotalMilliseconds : 0;
//Converter.FromUInt16((ushort)timeout, bytes, 2);
builder.Write(bytes);
}
public override void WriteFramingExtras(OperationBuilder builder)
{
if (DurabilityLevel == DurabilityLevel.None)
{
return;
}
// TODO: omit timeout bytes if no timeout provided
Span <byte> bytes = stackalloc byte[4];
var framingExtra = new FramingExtraInfo(RequestFramingExtraType.DurabilityRequirements, (byte)(bytes.Length - 1));
bytes[0] = (byte)(framingExtra.Byte | (byte)0x03);
bytes[1] = (byte)DurabilityLevel;
var userTimeout = DurabilityTimeout.Value.TotalMilliseconds;
ushort deadline;
if (userTimeout >= ushort.MaxValue)
{
// -1 because 0xffff is going to be reserved by the cluster. 1ms less doesn't matter.
deadline = ushort.MaxValue - 1;
}
else
{
// per spec 90% of the timeout is used as the deadline
deadline = (ushort)(userTimeout * 0.9);
}
if (deadline < SyncReplicationTimeoutFloorMs)
{
// we need to ensure a floor value
deadline = SyncReplicationTimeoutFloorMs;
}
ByteConverter.FromUInt16(deadline, bytes);
builder.Write(bytes);
}
