public static IIdentityGenerator Generator(this IdentityGeneratorType type)
{
switch (type)
{
case IdentityGeneratorType.NameBased:
return(new NameBasedIdentityGenerator());
case IdentityGeneratorType.Random:
return(new RandomIdentityGenerator());
case IdentityGeneratorType.TimeBased:
return(new TimeBasedIdentityGenerator());
default:
throw new ArgumentException($"Cannot find a UUID generatator for type {Enum.GetName(typeof(IdentityGeneratorType), type)}");
}
}
public static Guid NewSequentialGuid(IdentityGeneratorType guidType)
{
var randomBytes = new byte[10];
Rng.GetBytes(randomBytes);
var timestamp = DateTime.UtcNow.Ticks / 10000L;
var timestampBytes = BitConverter.GetBytes(timestamp);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(timestampBytes);
}
var guidBytes = new byte[16];
switch (guidType)
{
case IdentityGeneratorType.SequentialAsString:
case IdentityGeneratorType.SequentialAsBinary:
Buffer.BlockCopy(timestampBytes, 2, guidBytes, 0, 6);
Buffer.BlockCopy(randomBytes, 0, guidBytes, 6, 10);
if (guidType == IdentityGeneratorType.SequentialAsString && BitConverter.IsLittleEndian)
{
Array.Reverse(guidBytes, 0, 4);
Array.Reverse(guidBytes, 4, 2);
}
break;
case IdentityGeneratorType.SequentialAtEnd:
Buffer.BlockCopy(randomBytes, 0, guidBytes, 0, 10);
Buffer.BlockCopy(timestampBytes, 2, guidBytes, 10, 6);
break;
}
return(new Guid(guidBytes));
}
public GuidAddressFactory(IdentityGeneratorType type)
{
_type = type;
_generator = type.Generator();
_highId = new AtomicLong(World.HighRootId);
}
public GridAddressFactory(IdentityGeneratorType type) : base(type)
{
}
