131 lines
4.4 KiB
C#
131 lines
4.4 KiB
C#
/*
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* 版权属于：yitter(yitter@126.com)
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* 开源地址：https://github.com/yitter/idgenerator
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* 版权协议：MIT
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* 版权说明：只要保留本版权，你可以免费使用、修改、分发本代码。
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* 免责条款：任何因为本代码产生的系统、法律、政治、宗教问题，均与版权所有者无关。
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*
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*/
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Threading;
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namespace Yitter.IdGenerator
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{
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/// <summary>
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/// 默认实现
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/// </summary>
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public class DefaultIdGenerator : IIdGenerator
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{
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private ISnowWorker _SnowWorker { get; set; }
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//public Action<OverCostActionArg> GenIdActionAsync
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//{
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// get => _SnowWorker.GenAction;
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// set => _SnowWorker.GenAction = value;
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//}
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public DefaultIdGenerator(IdGeneratorOptions options)
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{
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if (options == null)
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{
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throw new ArgumentException("options error.");
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}
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// 1.BaseTime
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if (options.BaseTime < DateTime.Now.AddYears(-50) || options.BaseTime > DateTime.Now)
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{
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throw new ArgumentException("BaseTime error.");
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}
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// 2.WorkerIdBitLength
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int maxLength = options.TimestampType == 0 ? 22 : 31; // （秒级时间戳时放大到31位）
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if (options.WorkerIdBitLength <= 0)
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{
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throw new ArgumentException("WorkerIdBitLength error.(range:[1, 21])");
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}
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if (options.DataCenterIdBitLength + options.WorkerIdBitLength + options.SeqBitLength > maxLength)
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{
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throw new ArgumentException("error：DataCenterIdBitLength + WorkerIdBitLength + SeqBitLength <= " + maxLength);
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}
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// 3.WorkerId & DataCenterId
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var maxWorkerIdNumber = (1 << options.WorkerIdBitLength) - 1;
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if (maxWorkerIdNumber == 0)
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{
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maxWorkerIdNumber = 63;
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}
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if (options.WorkerId < 0 || options.WorkerId > maxWorkerIdNumber)
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{
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throw new ArgumentException("WorkerId error. (range:[0, " + maxWorkerIdNumber + "]");
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}
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var maxDataCenterIdNumber = (1 << options.DataCenterIdBitLength) - 1;
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if (options.DataCenterId < 0 || options.DataCenterId > maxDataCenterIdNumber)
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{
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throw new ArgumentException("DataCenterId error. (range:[0, " + maxDataCenterIdNumber + "]");
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}
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// 4.SeqBitLength
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if (options.SeqBitLength < 2 || options.SeqBitLength > 21)
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{
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throw new ArgumentException("SeqBitLength error. (range:[2, 21])");
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}
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// 5.MaxSeqNumber
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var maxSeqNumber = (1 << options.SeqBitLength) - 1;
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if (maxSeqNumber == 0)
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{
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maxSeqNumber = 63;
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}
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if (options.MaxSeqNumber < 0 || options.MaxSeqNumber > maxSeqNumber)
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{
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throw new ArgumentException("MaxSeqNumber error. (range:[1, " + maxSeqNumber + "]");
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}
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// 6.MinSeqNumber
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if (options.MinSeqNumber < 5 || options.MinSeqNumber > maxSeqNumber)
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{
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throw new ArgumentException("MinSeqNumber error. (range:[5, " + maxSeqNumber + "]");
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}
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// 7.TopOverCostCount
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if (options.TopOverCostCount < 0 || options.TopOverCostCount > 10000)
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{
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throw new ArgumentException("TopOverCostCount error. (range:[0, 10000]");
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}
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switch (options.Method)
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{
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case 2:
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_SnowWorker = new SnowWorkerM2(options);
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break;
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default:
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if (options.DataCenterIdBitLength == 0 && options.TimestampType == 0)
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{
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_SnowWorker = new SnowWorkerM1(options);
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}
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else
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{
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_SnowWorker = new SnowWorkerM3(options);
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}
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break;
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}
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if (options.Method != 2)
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{
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Thread.Sleep(500);
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}
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}
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public long NewLong()
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{
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return _SnowWorker.NextId();
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}
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}
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}
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