OperationLogger

OperationLogger.cs

using System;
using System.Diagnostics;

namespace Profiler
{
    using Serilog;
    using Serilog.Events;

    public class OperationLogger : Stopwatch, IDisposable
    {
        private readonly string _operationName;
        private readonly LogEventLevel _logEventLevel;
        private readonly ILogger _logger;

        public const string OperationStarted = "{operationName}:Operation started.";
        public const string OperationFinished = "{operationName}:Operation finished. Elapsed={elapsedMilliseconds} ms";

        public OperationLogger(string operationName, ILogger logger, LogEventLevel logEventLevel = LogEventLevel.Information)
        {
            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
            _operationName = operationName ?? throw new ArgumentNullException(nameof(operationName));

            _logEventLevel = logEventLevel;

            this.Start();

            _logger.Write(_logEventLevel, OperationStarted, _operationName);
        }


        public void Dispose()
        {
            this.Stop();
            _logger.Write(_logEventLevel, OperationFinished, _operationName, this.ElapsedMilliseconds);

            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (disposing)
            {
                // Free managed resources
            }
            // Free native resources if there are any.
        }

        ~OperationLogger()
        {
            Dispose(false);
        }
    }

}