增加雪花算法https://gitee.com/yitter/idgenerator

增加对数据库主键为numberic的支持

Infrastructure/Snowflake/YitIdGenerator.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+
+namespace Yitter.IdGenerator
+{
+    public class YitIdGenerator : IIdGenerator
+    {
+        private ISnowWorker _SnowWorker { get; set; }
+
+        public Action<OverCostActionArg> GenIdActionAsync
+        {
+            get => _SnowWorker.GenAction;
+            set => _SnowWorker.GenAction = value;
+        }
+
+        public YitIdGenerator(IdGeneratorOptions options)
+        {
+            if (options == null)
+            {
+                throw new ApplicationException("options error.");
+            }
+
+            if (options.StartTime > DateTime.Now)
+            {
+                throw new ApplicationException("StartTime 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 < 1 || options.WorkerId > maxWorkerIdNumber)
+            {
+                throw new ApplicationException("WorkerId is error. (range:[1, " + maxWorkerIdNumber + "]");
+            }
+
+            if (options.SeqBitLength < 2 || options.SeqBitLength > 21)
+            {
+                throw new ApplicationException("SeqBitLength is error. (range:[2, 21])");
+            }
+
+            var maxSeqNumber = Math.Pow(2, options.SeqBitLength) - 1;
+            if (options.MaxSeqNumber < 0 || options.MaxSeqNumber > maxSeqNumber)
+            {
+                throw new ApplicationException("MaxSeqNumber is error. (range:[1, " + maxSeqNumber + "]");
+            }
+
+            var maxValue = maxSeqNumber - 2;
+            if (options.MinSeqNumber < 5 || options.MinSeqNumber > maxValue)
+            {
+                throw new ApplicationException("MinSeqNumber is error. (range:[5, " + maxValue + "]");
+            }
+
+            switch (options.Method)
+            {
+                case 1:
+                    _SnowWorker = new SnowWorkerM1(options);
+                    break;
+                case 2:
+                    _SnowWorker = new SnowWorkerM2(options);
+                    break;
+                default:
+                    _SnowWorker = new SnowWorkerM1(options);
+                    break;
+            }
+
+            if (options.Method == 1)
+            {
+                Thread.Sleep(500);
+            }
+        }
+
+
+        public long NewLong()
+        {
+            return _SnowWorker.NextId();
+        }
+    }
+}