using Microsoft.Extensions.Logging;
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using SqlSugar;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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using WIDESEA_Core.Helper;
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namespace WIDESEA_Core.BaseRepository
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{
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public class UnitOfWorkManage : IUnitOfWorkManage
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{
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// 定义日志记录器
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private readonly ILogger<UnitOfWorkManage> _logger;
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// 定义SqlSugarClient
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private readonly ISqlSugarClient _sqlSugarClient;
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// 定义事务计数器
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private int _tranCount { get; set; }
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// 定义事务计数器的只读属性
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public int TranCount => _tranCount;
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// 定义事务栈
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public readonly ConcurrentStack<string> TranStack = new();
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// 构造函数，初始化日志记录器和SqlSugarClient
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public UnitOfWorkManage(ISqlSugarClient sqlSugarClient, ILogger<UnitOfWorkManage> logger)
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{
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_sqlSugarClient = sqlSugarClient;
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_logger = logger;
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_tranCount = 0;
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}
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/// <summary>
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/// 获取DB，保证唯一性
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/// </summary>
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/// <returns></returns>
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public SqlSugarClient GetDbClient()
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{
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// 必须要as，后边会用到切换数据库操作
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return _sqlSugarClient as SqlSugarClient;
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}
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// 创建UnitOfWork
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public UnitOfWork CreateUnitOfWork()
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{
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UnitOfWork uow = new UnitOfWork();
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uow.Logger = _logger;
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uow.Db = _sqlSugarClient;
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uow.Tenant = (ITenant)_sqlSugarClient;
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uow.IsTran = true;
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uow.Db.Open();
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uow.Tenant.BeginTran();
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_logger.LogDebug("UnitOfWork Begin");
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return uow;
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}
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// 开始事务
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public void BeginTran()
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{
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lock (this)
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{
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_tranCount++;
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GetDbClient().BeginTran();
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}
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}
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// 开始事务，并记录方法名
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public void BeginTran(MethodInfo method)
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{
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lock (this)
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{
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GetDbClient().BeginTran();
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TranStack.Push(method.GetFullName());
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_tranCount = TranStack.Count;
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}
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}
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// 开始事务，并执行函数，根据函数返回值决定是否提交事务
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public WebResponseContent BeginTran(Func<WebResponseContent> func)
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{
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lock (this)
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{
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BeginTran();
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try
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{
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WebResponseContent content = func();
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if (content.Status)
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{
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CommitTran();
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}
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else
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{
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RollbackTran();
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}
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return content;
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}
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catch(Exception ex)
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{
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RollbackTran();
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return WebResponseContent.Instance.Error(ex.Message);
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}
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}
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}
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// 提交事务
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public void CommitTran()
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{
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lock (this)
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{
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_tranCount--;
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if (_tranCount == 0)
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{
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try
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{
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GetDbClient().CommitTran();
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}
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catch (Exception ex)
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{
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Console.WriteLine(ex.Message);
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GetDbClient().RollbackTran();
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}
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}
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}
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}
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// 提交事务，并记录方法名
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public void CommitTran(MethodInfo method)
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{
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lock (this)
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{
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string result = "";
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while (!TranStack.IsEmpty && !TranStack.TryPeek(out result))
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{
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Thread.Sleep(1);
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}
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if (result == method.GetFullName())
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{
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try
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{
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GetDbClient().CommitTran();
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_logger.LogDebug($"Commit Transaction");
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Console.WriteLine($"Commit Transaction");
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}
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catch (Exception ex)
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{
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Console.WriteLine(ex.Message);
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GetDbClient().RollbackTran();
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_logger.LogDebug($"Commit Error , Rollback Transaction");
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}
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finally
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{
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while (!TranStack.TryPop(out _))
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{
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Thread.Sleep(1);
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}
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_tranCount = TranStack.Count;
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}
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}
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}
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}
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// 回滚事务
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public void RollbackTran()
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{
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lock (this)
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{
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_tranCount--;
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GetDbClient().RollbackTran();
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}
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}
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// 回滚事务，并记录方法名
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public void RollbackTran(MethodInfo method)
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{
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lock (this)
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{
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string result = "";
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while (!TranStack.IsEmpty && !TranStack.TryPeek(out result))
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{
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Thread.Sleep(1);
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}
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if (result == method.GetFullName())
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{
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GetDbClient().RollbackTran();
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_logger.LogDebug($"Rollback Transaction");
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Console.WriteLine($"Rollback Transaction");
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while (!TranStack.TryPop(out _))
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{
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Thread.Sleep(1);
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}
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_tranCount = TranStack.Count;
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}
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}
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}
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}
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}
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