73 lines
2.7 KiB
C#
73 lines
2.7 KiB
C#
|
using System;
|
|||
|
|
using System.Net;
|
|||
|
|
using System.Threading.Tasks;
|
|||
|
|
using Microsoft.AspNetCore.Http;
|
|||
|
|
using Newtonsoft.Json;
|
|||
|
|
using OnlineAssessment.Common;
|
|||
|
|
|
|||
|
|
namespace OnlineAssessment
|
|||
|
|
{
|
|||
|
|
public class ErrorHandlingMiddleware
|
|||
|
|
{
|
|||
|
|
private readonly RequestDelegate next;
|
|||
|
|
public ErrorHandlingMiddleware(RequestDelegate next)
|
|||
|
|
{
|
|||
|
|
this.next = next;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public async Task Invoke(HttpContext context /* other dependencies */)
|
|||
|
|
{
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
await next(context);
|
|||
|
|
}
|
|||
|
|
catch (Exception ex)
|
|||
|
|
{
|
|||
|
|
await HandleExceptionAsync(context, ex);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private static Task HandleExceptionAsync(HttpContext context, Exception ex)
|
|||
|
|
{
|
|||
|
|
var code = HttpStatusCode.InternalServerError; // 500 if unexpected
|
|||
|
|
|
|||
|
|
if (ex is FormatException) code = HttpStatusCode.BadRequest;
|
|||
|
|
else if (ex is InvalidOperationException) code = HttpStatusCode.BadRequest;
|
|||
|
|
else if (ex is UriFormatException) code = HttpStatusCode.RequestUriTooLong;
|
|||
|
|
else if (ex is UnauthorizedAccessException) code = HttpStatusCode.Unauthorized;
|
|||
|
|
else if (ex is ArgumentNullException) code = HttpStatusCode.BadRequest;
|
|||
|
|
else if (ex is ArgumentException) code = HttpStatusCode.BadRequest;
|
|||
|
|
else if (ex is WebException) code = HttpStatusCode.BadRequest;
|
|||
|
|
else if (ex is EntryPointNotFoundException) code = HttpStatusCode.NotFound;
|
|||
|
|
|
|||
|
|
//else if (ex is ValueNotAcceptedException) code = HttpStatusCode.NotAcceptable;
|
|||
|
|
//else if (ex is UnauthorizedException) code = HttpStatusCode.Unauthorized;
|
|||
|
|
|
|||
|
|
string retStatusMessage = string.Empty;
|
|||
|
|
string retStatusCode = (((int)code) * -1).ToString();
|
|||
|
|
|
|||
|
|
if (ex.InnerException != null && ex.InnerException.Message.Length > 0)
|
|||
|
|
{
|
|||
|
|
retStatusMessage = string.Concat(ex.Message, " InnerException :- ", ex.InnerException.Message);
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
retStatusMessage = ex.Message;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
ReturnResponse returnResponse = new ReturnResponse();
|
|||
|
|
ReturnStatus retStatus = new ReturnStatus(retStatusCode, retStatusMessage);
|
|||
|
|
|
|||
|
|
returnResponse.Result = new object();
|
|||
|
|
returnResponse.Status = retStatus;
|
|||
|
|
|
|||
|
|
//var result = JsonConvert.SerializeObject(new { code, error = ex.Message });
|
|||
|
|
var result = JsonConvert.SerializeObject(returnResponse);
|
|||
|
|
|
|||
|
|
context.Response.ContentType = "application/json";
|
|||
|
|
context.Response.StatusCode = (int)code;
|
|||
|
|
return context.Response.WriteAsync(result);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|