From a089ba7ed0ef853f897a9109da62dba0329b77de Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Thu, 27 Jul 2023 19:06:22 +0800
Subject: [PATCH] Snowflake ID time rollback process

---
 .../SqlSugar/DistributedSystem/Snowflake/IdWorker.cs        | 6 +++++-
 Src/Asp.NetCore2/SqlSugar/Infrastructure/StaticConfig.cs    | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Src/Asp.NetCore2/SqlSugar/DistributedSystem/Snowflake/IdWorker.cs b/Src/Asp.NetCore2/SqlSugar/DistributedSystem/Snowflake/IdWorker.cs
index 347b4efda..bf2aa5d84 100644
--- a/Src/Asp.NetCore2/SqlSugar/DistributedSystem/Snowflake/IdWorker.cs
+++ b/Src/Asp.NetCore2/SqlSugar/DistributedSystem/Snowflake/IdWorker.cs
@@ -81,10 +81,14 @@ namespace SqlSugar.DistributedSystem.Snowflake
 
                 if (timestamp < _lastTimestamp) 
                 {
+                    if (StaticConfig.CustomSnowFlakeTimeErrorFunc != null) 
+                    {
+                        return StaticConfig.CustomSnowFlakeTimeErrorFunc();
+                    } 
                     //exceptionCounter.incr(1);
                     //log.Error("clock is moving backwards.  Rejecting requests until %d.", _lastTimestamp);
                     throw new InvalidSystemClock(String.Format(
-                        "Clock moved backwards.  Refusing to generate id for {0} milliseconds", _lastTimestamp - timestamp));
+                        "服务器时间出现回退你可以使用StaticConfig.CustomSnowFlakeTimeErrorFunc=【自定义方法】处理让他不报错返回新ID,Clock moved backwards.  Refusing to generate id for {0} milliseconds", _lastTimestamp - timestamp));
                 }
 
                 if (_lastTimestamp == timestamp) 
diff --git a/Src/Asp.NetCore2/SqlSugar/Infrastructure/StaticConfig.cs b/Src/Asp.NetCore2/SqlSugar/Infrastructure/StaticConfig.cs
index f9819ef2c..a42aaecb0 100644
--- a/Src/Asp.NetCore2/SqlSugar/Infrastructure/StaticConfig.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Infrastructure/StaticConfig.cs
@@ -13,6 +13,7 @@ namespace SqlSugar
 
         public const string CodeFirst_BigString = "varcharmax,longtext,text,clob";
         public static Func<long> CustomSnowFlakeFunc;
+        public static Func<long> CustomSnowFlakeTimeErrorFunc;
 
         public static Action<object> CompleteQueryableFunc;
         public static Action<object> CompleteInsertableFunc;