using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.Extensions.Logging;
using System;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;

namespace Dynamics.WebApi.Filters
{
public class CustomerActionFilter : ActionFilterAttribute
{
/// <summary>
///
/// </summary>
private const string key = "enterTime";
/// <summary>
///
/// </summary>
private readonly ILogger _logger;
/// <summary>
///
/// </summary>
/// <param name="loggerFactory"></param>
public CustomerActionFilter(ILoggerFactory loggerFactory)
{
_logger = loggerFactory.CreateLogger<CustomerActionFilter>();
}
/// <summary>
/// 执行前拦截记录请求参数
/// </summary>
/// <param name="context"></param>
public override void OnActionExecuting(ActionExecutingContext context)
{
var actionDescriptor = string.Empty;
try
{
#region 记录请求日志
string requestBody = "";
Stream stream = context.HttpContext.Request.Body;
long contentLen = context.HttpContext.Request.ContentLength == null ? 0 : context.HttpContext.Request.ContentLength.Value;
if (stream != null)
{
stream.Position = 0;
byte[] buffer = new byte[contentLen];
stream.Read(buffer, 0, buffer.Length);
// 转化为字符串
requestBody = Encoding.UTF8.GetString(buffer);
}
long enterTime = DateTime.Now.Ticks;
context.ActionDescriptor.Properties[key] = enterTime;
context.HttpContext.Request.Headers.Append(key, new Microsoft.Extensions.Primitives.StringValues(enterTime.ToString()));
//[POST_Request] {requestid} http://dev.localhost/messagr/api/message/send {data}
actionDescriptor = ((Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor)context.ActionDescriptor).ControllerName + "/" + ((Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor)context.ActionDescriptor).ActionName;
var url = context.HttpContext.Request.Host + context.HttpContext.Request.Path + context.HttpContext.Request.QueryString;
_logger.LogDebug(string.Format("[{0}_Request] [{1}] {2} {3}\r\n{4}"
, actionDescriptor
, context.HttpContext.Request.Method
, enterTime
, url, requestBody));
#endregion

#region 请求参数验证
if (!context.ModelState.IsValid)
{
context.HttpContext.Response.StatusCode = (int)HttpStatusCode.BadRequest;
var errors = context.ModelState.Values.Select(s => s.Errors.Select(t => t.ErrorMessage));
context.Result = new JsonResult(errors);
}
#endregion
}
catch (Exception e)
{
_logger.LogError(e.Message + e.StackTrace);
}
finally
{
base.OnActionExecuting(context);
}
}
/// <summary>
/// 执行后拦截记录返回结果耗时
/// </summary>
/// <param name="context"></param>
public override void OnActionExecuted(ActionExecutedContext context)
{
string responseBody = string.Empty;
try
{
long enterTime = 0;
var costTime = string.Empty;
if (context.HttpContext.Request.Headers.TryGetValue(key, out var request_entertime))
{
enterTime = Convert.ToInt64(request_entertime);
costTime = new TimeSpan(DateTime.Now.Ticks - enterTime).ToString();
}
dynamic result = context.Result.GetType().Name == "EmptyResult" ? new { Value = "无返回结果" } : context.Result as dynamic;
if (result != null)
{
responseBody = Newtonsoft.Json.JsonConvert.SerializeObject(result.Value);
}
var actionDescriptor = ((Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor)context.ActionDescriptor).ControllerName + "/" + ((Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor)context.ActionDescriptor).ActionName;
_logger.LogDebug(string.Format("[{0}_Response] {1} CostTime:{2}\r\n{3}"
, actionDescriptor
, enterTime
, costTime
, responseBody));
}
catch (Exception e)
{
_logger.LogError(e.Message + e.StackTrace);
}
finally
{
base.OnActionExecuted(context);
}
}
}
}