Consistent Error Logging - Application Exception Middleware

ApplicationExceptionMiddleware.cs

using System;
using System.Net.Mime;
using System.Text.Json;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;

public class ApplicationExceptionMiddleware
{
    private readonly RequestDelegate _next;
    private readonly IExceptionHandler _exceptionHandler;
    private readonly ILogger<ApplicationExceptionMiddleware> _logger;

    public ApplicationExceptionMiddleware(
        RequestDelegate next,
        IExceptionHandler exceptionHandler,
        ILogger<ApplicationExceptionMiddleware> logger)
    {
        _next = next;
        _exceptionHandler = exceptionHandler;
        _logger = logger;
    }

    public async Task InvokeAsync(HttpContext httpContext)
    {
        try
        {
            await _next(httpContext);
        }
        catch (Exception ex)
        {
            var errorDocument = _exceptionHandler.HandleException(ex);
            if (!httpContext.Response.HasStarted)
            {
                httpContext.Response.Clear();
                httpContext.Response.ContentType = MediaTypeNames.Application.Json;
                httpContext.Response.StatusCode = (int) errorDocument.StatusCode;
                await httpContext.Response.WriteAsync(JsonSerializer.Serialize(
                    errorDocument));
            }
        }
    }
}