PerformanceCounters.cs

using Serilog;
using System;
using System.IO;
namespace DBADash
{
    static class PerformanceCounters
    {

        static string countersXML;
        static readonly string defaultFileName = "PerformanceCounters.xml";
        static readonly string userFileName = "PerformanceCountersCustom.xml";

        public static string PerformanceCountersXML
        {
            get
            {
                if (countersXML != null) return countersXML;
                try
                {

                    if (File.Exists(userFileName))
                    {
                        Log.Information("Read performance counters from {filename} (user)", userFileName);
                        countersXML = File.ReadAllText(userFileName);
                    }
                    else if (File.Exists(defaultFileName))
                    {
                        Log.Information("Read performance counters from {filename} (default)", defaultFileName);
                        countersXML = File.ReadAllText(defaultFileName);
                    }
                    else
                    {
                        Log.Warning("Performance counters file '{filename}' not found.  Performance counter collection disabled", defaultFileName);
                        countersXML = "";
                        return countersXML;
                    }
                }
                catch (Exception ex)
                {
                    Log.Error(ex, "Error reading performance counters file '{filename}'.  Performance counter collection disabled", defaultFileName);
                    countersXML = "";
                }

                return countersXML;
            }
        }

    }
}