public SnowflakeIdState(String idString, ISnowflakeId idGen)
{
IdString = idString;
_idGen = idGen;
MachineIdLength = _idGen.MaxMachineMask.ToString().Length;
SequenceLength = _idGen.SequenceMask.ToString().Length;
#region UTC Convert
var year = int.Parse(idString.Substring(0, 4));
var month = int.Parse(idString.Substring(4, 2));
var day = int.Parse(idString.Substring(6, 2));
var hour = int.Parse(idString.Substring(8, 2));
var minute = int.Parse(idString.Substring(10, 2));
var second = int.Parse(idString.Substring(12, 2));
var millisecond = int.Parse(idString.Substring(14, 3));
UtcTime = new DateTimeOffset(year, month, day, hour, minute, second, millisecond, TimeSpan.Zero);
#endregion
var machineIdString = idString.Substring(17, MachineIdLength);
MachineId = long.Parse(machineIdString);
if (MachineId != _idGen.MachineId)
{
throw new ArgumentException($"MachineId:[{MachineId}] not Equal IdGen.MachineId:[{_idGen.MachineId}]",
nameof(MachineId));
}
var sequenceString = idString.Substring(17 + MachineIdLength, SequenceLength);
Sequence = long.Parse(sequenceString);
var timestamp = UtcTime.ToUnixTimeMilliseconds();
Id = ((timestamp - _idGen.Epoch) << _idGen.TimestampShift) | (MachineId << _idGen.SequenceBits) | Sequence;
}
public SnowflakeIdState(long id, ISnowflakeId idGen)
{
Id = id;
_idGen = idGen;
MachineIdLength = _idGen.MaxMachineMask.ToString().Length;
SequenceLength = _idGen.SequenceMask.ToString().Length;
Sequence = Id & _idGen.SequenceMask;
MachineId = (Id >> _idGen.SequenceBits) & _idGen.MaxMachineMask;
if (MachineId != _idGen.MachineId)
{
throw new ArgumentException($"MachineId:[{MachineId}] not Equal IdGen.MachineId:[{_idGen.MachineId}]",
nameof(MachineId));
}
UtcTime = _idGen.EpochTime.AddMilliseconds((Id >> _idGen.TimestampShift) & _idGen.TimestampMask);
var machineIdFormat = $"D{MachineIdLength}";
var sequenceFormat = $"D{SequenceLength}";
IdString =
$"{UtcTime.ToString(TIME_FORMAT)}{MachineId.ToString(machineIdFormat)}{Sequence.ToString(sequenceFormat)}";
}
