unit uIdGeneratorOptions; interface uses System.DateUtils, System.SysUtils; type TIdGeneratorOptions = class private FMethod: SmallInt; // FBaseTime: TDateTime; FBaseTime: Int64; FWorkerId: Word; FWorkerIdBitLength: Byte; FSeqBitLength: Byte; FMaxSeqNumber: Integer; FMinSeqNumber: Word; FTopOverCostCount: Integer; FDataCenterId: Cardinal; FDataCenterIdBitLength: Byte; FTimestampType: Byte; public /// /// 雪花计算方法 /// (1-漂移算法|2-传统算法),默认1 /// property Method: SmallInt read FMethod write FMethod default 1; /// /// 基础时间(UTC格式) /// 不能超过当前系统时间 /// // property BaseTime: TDateTime read FBaseTime write FBaseTime; property BaseTime: Int64 read FBaseTime write FBaseTime; /// /// 机器码 /// 必须由外部设定,最大值 2^WorkerIdBitLength-1 /// property WorkerId: Word read FWorkerId write FWorkerId default 0; /// /// 机器码位长 /// 默认值6,取值范围 [1, 15](要求:序列数位长+机器码位长不超过22) /// property WorkerIdBitLength: Byte read FWorkerIdBitLength write FWorkerIdBitLength default 6; // 10; /// /// 序列数位长 /// 默认值6,取值范围 [3, 21](要求:序列数位长+机器码位长不超过22) /// property SeqBitLength: Byte read FSeqBitLength write FSeqBitLength default 6; // 10; /// /// 最大序列数(含) /// 设置范围 [MinSeqNumber, 2^SeqBitLength-1],默认值0,表示最大序列数取最大值(2^SeqBitLength-1]) /// property MaxSeqNumber: Integer read FMaxSeqNumber write FMaxSeqNumber default 0; /// /// 最小序列数(含) /// 默认值5,取值范围 [5, MaxSeqNumber],每毫秒的前5个序列数对应编号0-4是保留位,其中1-4是时间回拨相应预留位,0是手工新值预留位 /// property MinSeqNumber: Word read FMinSeqNumber write FMinSeqNumber default 5; /// /// 最大漂移次数(含), /// 默认2000,推荐范围500-10000(与计算能力有关) /// property TopOverCostCount: Integer read FTopOverCostCount write FTopOverCostCount default 2000; /// /// 数据中心ID(默认0) /// property DataCenterId: Cardinal read FDataCenterId write FDataCenterId default 0; /// /// 数据中心ID长度(默认0) /// property DataCenterIdBitLength: Byte read FDataCenterIdBitLength write FDataCenterIdBitLength default 0; /// /// 时间戳类型(0-毫秒,1-秒),默认0 /// property TimestampType: Byte read FTimestampType write FTimestampType default 0; constructor Create(); overload; constructor Create(WorkerId: Word); overload; end; implementation { TIdGeneratorOptions } constructor TIdGeneratorOptions.Create(WorkerId: Word); begin FBaseTime := 1582136402000; // EncodeDateTime(2020, 2, 20, 2, 20, 2, 20); FWorkerId := WorkerId; end; constructor TIdGeneratorOptions.Create(); begin FBaseTime := 1582136402000; // EncodeDateTime(2020, 2, 20, 2, 20, 2, 20); end; end.