.Net Core Utilities

 Audit Filter 

 public class AuditFilter : IAsyncActionFilter
    {
        /// <summary>
        /// The Logger
        /// </summary>
        private readonly ILogger<AuditFilter> logger;


        /// <summary>
        /// Constructs an Audit Filter
        /// </summary>
        /// <param name="logger"></param>
        public AuditFilter(ILogger<AuditFilter> logger)
        {
            this.logger = logger;
        }


        /// <summary>
        /// This method is called just before an action is invoked
        /// </summary>
        public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
        {
            LogRequest(context);
            await next();
        }


        /// <summary>
        /// Logs the request information about the request 
        /// </summary>
        /// <param name="context">The Action Executing Context</param>
        private void LogRequest(ActionExecutingContext context)
        {
            Dictionary<string, object> routeData = null;

            if (context.HttpContext.Request.ContentType == null
                || !context.HttpContext.Request.ContentType.Contains("multipart/form-data"))
                routeData = context.ActionArguments?.ToDictionary(kv => kv.Key, kv => kv.Value);

            var request = new
            {
                RequestId = context.HttpContext.TraceIdentifier, // Request identifier ({ConnectionId:RequestNumber}) generated by Kestrel
                RouteData = routeData, // Route parameters (including anything taken from request body)
                UserId = context.HttpContext.User?.FindFirst(ClaimTypes.NameIdentifier)?.Value, // User Id
                Name = context.HttpContext.User?.FindFirst(ClaimTypes.Name)?.Value, // User Name
                Date = DateTime.UtcNow, // Date and time in UTC
                Operation = $"{context.HttpContext.Request.Path}-{context.HttpContext.Request.Method}", // Endpoint - HTTP verb
            };

            logger.LogInformation(JsonConvert.SerializeObject(request));
        }
    }