/// <summary>
/// 构造函数
/// </summary>
/// <param name="options"></param>
public DefaultIDGenerator(IDGeneratorOptions options)
{
if (options == null)
{
throw new ApplicationException("options error.");
}
if (options.BaseTime < DateTime.Now.AddYears(-50) || options.BaseTime > DateTime.Now)
{
throw new ApplicationException("BaseTime error.");
}
if (options.SeqBitLength + options.WorkerIdBitLength > 22)
{
throw new ApplicationException("error：WorkerIdBitLength + SeqBitLength <= 22.");
}
var maxWorkerIdNumber = Math.Pow(2, options.WorkerIdBitLength) - 1;
if (options.WorkerId < 0 || options.WorkerId > maxWorkerIdNumber)
{
throw new ApplicationException("WorkerId error. (range:[1, " + maxWorkerIdNumber + "].");
}
if (options.SeqBitLength < 2 || options.SeqBitLength > 21)
{
throw new ApplicationException("SeqBitLength error. (range:[2, 21]).");
}
var maxSeqNumber = Math.Pow(2, options.SeqBitLength) - 1;
if (options.MaxSeqNumber < 0 || options.MaxSeqNumber > maxSeqNumber)
{
throw new ApplicationException("MaxSeqNumber error. (range:[1, " + maxSeqNumber + "].");
}
var maxValue = maxSeqNumber; // maxSeqNumber - 1;
if (options.MinSeqNumber < 1 || options.MinSeqNumber > maxValue)
{
throw new ApplicationException("MinSeqNumber error. (range:[1, " + maxValue + "].");
}
InternalSnowflakeWorker = options.Method switch
{
1 => new SnowflakeWorkerM1(options),
2 => new SnowflakeWorkerM2(options),
_ => new SnowflakeWorkerM1(options),
};
if (options.Method == 1)
{
Thread.Sleep(500);
}
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="options"></param>
public SnowflakeWorkerM2(IDGeneratorOptions options) : base(options)
{
}
/// <summary>
/// 设置参数，建议程序初始化时执行一次
/// </summary>
/// <param name="options"></param>
public static void SetIdGenerator(IDGeneratorOptions options)
{
instance = new DefaultIDGenerator(options);
}