feat: 添加多租户模块

Yi.Framework.Net6/src/framework/Yi.Framework.MultiTenancy/CurrentTenant.cs

@@ -0,0 +1,60 @@
+using Yi.Framework.Core.Utils;
+
+namespace Yi.Framework.MultiTenancy;
+
+/// <summary>
+/// 当前租户实现
+/// </summary>
+public class CurrentTenant : ICurrentTenant
+{
+    private readonly ICurrentTenantAccessor _currentTenantAccessor;
+
+    /// <summary/>
+    public CurrentTenant(ICurrentTenantAccessor currentTenantAccessor)
+    {
+        _currentTenantAccessor = currentTenantAccessor;
+    }
+
+    /// <summary>
+    /// 是否有效
+    /// </summary>
+    public virtual bool IsAvailable => Id != Guid.Empty;
+
+    /// <summary>
+    /// 租户ID
+    /// </summary>
+    public virtual Guid Id => _currentTenantAccessor.Current?.TenantId ?? Guid.Empty;
+
+    /// <summary>
+    /// 租户名称
+    /// </summary>
+    public string? Name => _currentTenantAccessor.Current?.Name;
+
+    /// <summary>
+    /// 替换租户
+    /// </summary>
+    /// <param name="id"></param>
+    /// <param name="name"></param>
+    /// <returns></returns>
+    public IDisposable Change(Guid? id, string? name = null)
+    {
+        return SetCurrent(id, name);
+    }
+
+    /// <summary>
+    /// 设置当前租户
+    /// </summary>
+    /// <returns></returns>
+    private IDisposable SetCurrent(Guid? tenantId, string? name = null)
+    {
+        BasicTenantInfo? parentScope = _currentTenantAccessor.Current;
+        _currentTenantAccessor.Current = new BasicTenantInfo(tenantId, name);
+
+        return new DisposeAction<ValueTuple<ICurrentTenantAccessor, BasicTenantInfo>>(static ((ICurrentTenantAccessor, BasicTenantInfo) state) =>
+        {
+            (ICurrentTenantAccessor currentTenantAccessor, BasicTenantInfo parentScope) = state;
+            currentTenantAccessor.Current = parentScope;
+        },
+        (_currentTenantAccessor, parentScope));
+    }
+}