From 1293daeb8825af2d8c312f8ae904c4c7fec7008e Mon Sep 17 00:00:00 2001
From: catcherwong <catcher_hwq@outlook.com>
Date: Thu, 3 Feb 2022 22:11:45 +0800
Subject: [PATCH] feat: bb support sqlserver

---
 src/Dtmcli.Tests/DbSpecialTests.cs |  6 +++
 src/Dtmcli/Constant.cs             |  2 +
 src/Dtmcli/DtmImp/IDbSpecial.cs    | 59 ++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+)

diff --git a/src/Dtmcli.Tests/DbSpecialTests.cs b/src/Dtmcli.Tests/DbSpecialTests.cs
index a019042..8edd590 100644
--- a/src/Dtmcli.Tests/DbSpecialTests.cs
+++ b/src/Dtmcli.Tests/DbSpecialTests.cs
@@ -18,6 +18,12 @@ public void TestDbSpecial()
             var postgres = DtmImp.DbSpecialDelegate.Instance.GetDBSpecial();
             Assert.Equal("begin", postgres.GetXaSQL("start", "xa1"));
             Assert.Equal("insert into a(f) values(@f) on conflict ON CONSTRAINT c do nothing", postgres.GetInsertIgnoreTemplate("a(f) values(@f)", "c"));
+
+            DtmImp.DbSpecialDelegate.Instance.SetCurrentDBType("sqlserver");
+
+            var sqlserver = DtmImp.DbSpecialDelegate.Instance.GetDBSpecial();
+            Assert.Equal("insert into a(f) values(@f)", sqlserver.GetInsertIgnoreTemplate("a(f) values(@f)", "c"));
+            Assert.Throws<DtmcliException>(() => sqlserver.GetXaSQL("", ""));
         }
     }
 }
\ No newline at end of file
diff --git a/src/Dtmcli/Constant.cs b/src/Dtmcli/Constant.cs
index 816531d..ccd0883 100644
--- a/src/Dtmcli/Constant.cs
+++ b/src/Dtmcli/Constant.cs
@@ -121,6 +121,8 @@ internal class Barrier
 
             internal static readonly string DBTYPE_POSTGRES = "postgres";
 
+            internal static readonly string DBTYPE_SQLSERVER = "sqlserver";
+
             internal static readonly string PG_CONSTRAINT = "uniq_barrier";
 
             internal static readonly string MSG_BARRIER_REASON = "rollback";
diff --git a/src/Dtmcli/DtmImp/IDbSpecial.cs b/src/Dtmcli/DtmImp/IDbSpecial.cs
index 701a4df..daab353 100644
--- a/src/Dtmcli/DtmImp/IDbSpecial.cs
+++ b/src/Dtmcli/DtmImp/IDbSpecial.cs
@@ -63,6 +63,64 @@ public string GetXaSQL(string command, string xid)
         }
     }
 
+    public class SqlServerDBSpecial : IDbSpecial
+    {
+        private SqlServerDBSpecial()
+        { }
+
+        private static readonly Lazy<SqlServerDBSpecial> Instancelock =
+                    new Lazy<SqlServerDBSpecial>(() => new SqlServerDBSpecial());
+
+        public static SqlServerDBSpecial Instance => Instancelock.Value;
+
+        /*
+
+IF NOT EXISTS(SELECT * FROM sys.databases WHERE name = 'dtm_barrier')
+BEGIN
+    CREATE DATABASE dtm_barrier
+    USE dtm_barrier
+END
+
+GO
+
+IF EXISTS (SELECT * FROM sysobjects WHERE id = object_id(N’[dbo].[barrier]’) and OBJECTPROPERTY(id, N’IsUserTable’) = 1)  
+BEGIN
+  DROP TABLE [dbo].[barrier]
+END
+
+GO
+
+CREATE TABLE [dbo].[barrier]
+(
+    [id] bigint NOT NULL IDENTITY(1,1) PRIMARY KEY,
+    [trans_type] varchar(45) NOT NULL DEFAULT(''),
+    [gid] varchar(128) NOT NULL DEFAULT(''),
+    [branch_id] varchar(128) NOT NULL DEFAULT(''),
+    [op] varchar(45) NOT NULL DEFAULT(''),
+    [barrier_id] varchar(45) NOT NULL DEFAULT(''),
+    [reason] varchar(45) NOT NULL DEFAULT(''),
+    [create_time] datetime NOT NULL DEFAULT(getdate()) ,
+    [update_time] datetime NOT NULL DEFAULT(getdate())
+)
+
+GO
+
+CREATE UNIQUE INDEX[ix_uniq_barrier] ON[dbo].[barrier]
+        ([gid] ASC, [branch_id] ASC, [op] ASC, [barrier_id] ASC)
+WITH(IGNORE_DUP_KEY = ON)
+
+GO
+         */
+        public string GetInsertIgnoreTemplate(string tableAndValues, string pgConstraint)
+            => string.Format("insert into {0}", tableAndValues);
+
+        public string GetPlaceHoldSQL(string sql)
+            => sql;
+
+        public string GetXaSQL(string command, string xid)
+            => throw new DtmcliException("not support xa now!!!");
+    }
+
     public class DbSpecialDelegate
     {
         private DbSpecialDelegate()
@@ -77,6 +135,7 @@ private DbSpecialDelegate()
         {
             { Constant.Barrier.DBTYPE_MYSQL, MysqlDBSpecial.Instance },
             { Constant.Barrier.DBTYPE_POSTGRES, PostgresDBSpecial.Instance },
+            { Constant.Barrier.DBTYPE_SQLSERVER, SqlServerDBSpecial.Instance },
         };
         private string _currentDBType = Constant.Barrier.DBTYPE_MYSQL;