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BlogTranAOP.cs
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91 lines (77 loc) · 2.53 KB
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using Blog.Core.Common;
using Blog.Core.IRepository.UnitOfWork;
using Castle.DynamicProxy;
using System;
using System.Linq;
using System.Reflection;
using System.Threading.Tasks;
namespace Blog.Core.AOP
{
/// <summary>
/// 事务拦截器BlogTranAOP 继承IInterceptor接口
/// </summary>
public class BlogTranAOP : IInterceptor
{
private readonly IUnitOfWork _unitOfWork;
public BlogTranAOP(IUnitOfWork unitOfWork)
{
_unitOfWork = unitOfWork;
}
/// <summary>
/// 实例化IInterceptor唯一方法
/// </summary>
/// <param name="invocation">包含被拦截方法的信息</param>
public void Intercept(IInvocation invocation)
{
var method = invocation.MethodInvocationTarget ?? invocation.Method;
//对当前方法的特性验证
//如果需要验证
if (method.GetCustomAttributes(true).FirstOrDefault(x => x.GetType() == typeof(UseTranAttribute)) is UseTranAttribute)
{
try
{
Console.WriteLine($"Begin Transaction");
_unitOfWork.BeginTran();
invocation.Proceed();
// 异步获取异常，先执行
if (IsAsyncMethod(invocation.Method))
{
var result = invocation.ReturnValue;
if (result is Task)
{
Task.WaitAll(result as Task);
}
}
_unitOfWork.CommitTran();
}
catch (Exception)
{
Console.WriteLine($"Rollback Transaction");
_unitOfWork.RollbackTran();
}
}
else
{
invocation.Proceed();//直接执行被拦截方法
}
}
private async Task SuccessAction(IInvocation invocation)
{
await Task.Run(() =>
{
//...
});
}
public static bool IsAsyncMethod(MethodInfo method)
{
return (
method.ReturnType == typeof(Task) ||
(method.ReturnType.IsGenericType && method.ReturnType.GetGenericTypeDefinition() == typeof(Task<>))
);
}
private async Task TestActionAsync(IInvocation invocation)
{
await Task.Run(null);
}
}
}