47 lines
1.5 KiB
C#
47 lines
1.5 KiB
C#
using System.Net;
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using System.Text.Json;
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using Serilog;
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namespace LctMonolith.Application.Middleware;
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/// <summary>
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/// Global error handling middleware capturing unhandled exceptions and converting to standardized JSON response.
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/// </summary>
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public class ErrorHandlingMiddleware
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{
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private readonly RequestDelegate _next;
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public ErrorHandlingMiddleware(RequestDelegate next) => _next = next;
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public async Task Invoke(HttpContext ctx)
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{
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try
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{
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await _next(ctx);
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}
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catch (OperationCanceledException)
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{
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// Client aborted request (non-standard 499 code used by some proxies)
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if (!ctx.Response.HasStarted)
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{
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ctx.Response.StatusCode = 499; // Client Closed Request (custom)
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}
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}
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catch (Exception ex)
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{
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Log.Error(ex, "Unhandled exception");
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if (ctx.Response.HasStarted) throw;
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ctx.Response.ContentType = "application/json";
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ctx.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
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var payload = new { error = new { message = ex.Message, traceId = ctx.TraceIdentifier } };
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await ctx.Response.WriteAsync(JsonSerializer.Serialize(payload));
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}
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}
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}
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public static class ErrorHandlingMiddlewareExtensions
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{
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/// <summary>Adds global error handling middleware.</summary>
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public static IApplicationBuilder UseErrorHandling(this IApplicationBuilder app) => app.UseMiddleware<ErrorHandlingMiddleware>();
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}
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