105 lines
3.6 KiB
C#
105 lines
3.6 KiB
C#
// Admin.NET 项目的版权、商标、专利和其他相关权利均受相应法律法规的保护。使用本项目应遵守相关法律法规和许可证的要求。
|
||
//
|
||
// 本项目主要遵循 MIT 许可证和 Apache 许可证（版本 2.0）进行分发和使用。许可证位于源代码树根目录中的 LICENSE-MIT 和 LICENSE-APACHE 文件。
|
||
//
|
||
// 不得利用本项目从事危害国家安全、扰乱社会秩序、侵犯他人合法权益等法律法规禁止的活动！任何基于本项目二次开发而产生的一切法律纠纷和责任，我们不承担任何责任！
|
||
|
||
using System.Security.Claims;
|
||
|
||
namespace Admin.NET.Core;
|
||
|
||
/// <summary>
|
||
/// 防止重复请求过滤器特性
|
||
/// </summary>
|
||
[SuppressSniffer]
|
||
[AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = true)]
|
||
public class IdempotentAttribute : Attribute, IAsyncActionFilter
|
||
{
|
||
/// <summary>
|
||
/// 请求间隔时间/秒
|
||
/// </summary>
|
||
public int IntervalTime { get; set; } = 5;
|
||
|
||
/// <summary>
|
||
/// 错误提示内容
|
||
/// </summary>
|
||
public string Message { get; set; } = "你操作频率过快，请稍后重试！";
|
||
|
||
/// <summary>
|
||
/// 缓存前缀: Key+请求路由+用户Id+请求参数
|
||
/// </summary>
|
||
public string CacheKey { get; set; }
|
||
|
||
/// <summary>
|
||
/// 是否直接抛出异常：Ture是，False返回上次请求结果
|
||
/// </summary>
|
||
public bool ThrowBah { get; set; }
|
||
|
||
public IdempotentAttribute()
|
||
{
|
||
}
|
||
|
||
public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
|
||
{
|
||
var httpContext = context.HttpContext;
|
||
var path = httpContext.Request.Path.Value.ToString();
|
||
var userId = httpContext.User?.FindFirstValue(ClaimConst.UserId);
|
||
var cacheExpireTime = TimeSpan.FromSeconds(IntervalTime);
|
||
|
||
var parameters = "";
|
||
foreach (var parameter in context.ActionDescriptor.Parameters)
|
||
{
|
||
parameters += parameter.Name;
|
||
parameters += context.ActionArguments[parameter.Name].ToJson();
|
||
}
|
||
|
||
var cacheKey = MD5Encryption.Encrypt($"{CacheKey}{path}{userId}{parameters}");
|
||
var sysCacheService = App.GetRequiredService<SysCacheService>();
|
||
if (sysCacheService.ExistKey(cacheKey))
|
||
{
|
||
if (ThrowBah) throw Oops.Oh(Message);
|
||
|
||
try
|
||
{
|
||
var cachedResult = sysCacheService.Get<ResponseData>(cacheKey);
|
||
context.Result = new ObjectResult(cachedResult.Value);
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
throw Oops.Oh($"{Message}-{ex}");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
// 先加入一个空缓存，防止第一次请求结果没回来导致连续请求
|
||
sysCacheService.Set(cacheKey, "", cacheExpireTime);
|
||
var resultContext = await next();
|
||
if (resultContext.Result is ObjectResult objectResult)
|
||
{
|
||
var valueType = objectResult.Value.GetType();
|
||
var responseData = new ResponseData
|
||
{
|
||
Type = valueType.Name,
|
||
Value = objectResult.Value
|
||
};
|
||
sysCacheService.Set(cacheKey, responseData, cacheExpireTime);
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 请求结果数据
|
||
/// </summary>
|
||
private class ResponseData
|
||
{
|
||
/// <summary>
|
||
/// 结果类型
|
||
/// </summary>
|
||
public string Type { get; set; }
|
||
|
||
/// <summary>
|
||
/// 请求结果
|
||
/// </summary>
|
||
public dynamic Value { get; set; }
|
||
}
|
||
} |