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/*
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* 版权属于：yitter(yitter@126.com)
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* 开源地址：https://gitee.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 Common;
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using Common.Extensions;
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using System;
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using System.Threading;
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namespace Common.Snowflake
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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 ApplicationException("options error.");
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}
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if (options.BaseTime < DateTimeExtension.GetUtcDateTime().AddYears(-50) || options.BaseTime > DateTimeExtension.GetUtcDateTime())
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{
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throw new ApplicationException("BaseTime error.");
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}
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if (options.WorkerIdBitLength <= 0)
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{
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throw new ApplicationException("WorkerIdBitLength error.(range:[1, 21])");
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}
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if (options.SeqBitLength + options.WorkerIdBitLength > 22)
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{
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throw new ApplicationException("error：WorkerIdBitLength + SeqBitLength <= 22");
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}
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var maxWorkerIdNumber = (1 << options.WorkerIdBitLength) - 1;
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if (options.WorkerId < 0 || options.WorkerId > maxWorkerIdNumber)
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{
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throw new ApplicationException("WorkerId error. (range:[0, " + (maxWorkerIdNumber > 0 ? maxWorkerIdNumber : 63) + "]");
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}
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if (options.SeqBitLength < 2 || options.SeqBitLength > 21)
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{
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throw new ApplicationException("SeqBitLength error. (range:[2, 21])");
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}
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var maxSeqNumber = (1 << options.SeqBitLength) - 1;
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if (options.MaxSeqNumber < 0 || options.MaxSeqNumber > maxSeqNumber)
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{
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throw new ApplicationException("MaxSeqNumber error. (range:[1, " + maxSeqNumber + "]");
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}
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var maxValue = maxSeqNumber;
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if (options.MinSeqNumber < 1 || options.MinSeqNumber > maxValue)
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{
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throw new ApplicationException("MinSeqNumber error. (range:[1, " + maxValue + "]");
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}
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switch (options.Method)
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{
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case 1:
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_SnowWorker = new SnowWorkerM1(options);
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break;
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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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_SnowWorker = new SnowWorkerM1(options);
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break;
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}
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if (options.Method == 1)
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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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