tbf/AppDiagnostic.Logging/AppDiagnosticConnector.cs

using NLog;
using NLog.Config;
using NLog.Layouts;

namespace AppDiagnostic.Logging
{
    public static class AppDiagnosticConnector
    {
        private static readonly object syncRoot = new object();

        public static void Register()
        {
            lock (syncRoot)
            {
                LoggingConfiguration configuration = LogManager.Configuration ?? new LoggingConfiguration();
                NLog.Targets.Target existingTarget = configuration.FindTargetByName("appDiagnostic");

                if (existingTarget != null)
                {
                    return;
                }

                var target = new AppDiagnosticTarget
                {
                    Name = "appDiagnostic",
                    PipeName = DiagnosticProtocol.DefaultPipeName,
                    QueueLimit = DiagnosticProtocol.DefaultQueueLimit,
                    ReconnectDelayMilliseconds = DiagnosticProtocol.DefaultReconnectDelayMilliseconds,
                    ConnectTimeoutMilliseconds = DiagnosticProtocol.DefaultConnectTimeoutMilliseconds,
                    Layout = new SimpleLayout("${message}")
                };

                configuration.AddTarget(target.Name, target);
                configuration.AddRule(LogLevel.Trace, LogLevel.Fatal, target, "*");

                LogManager.Configuration = configuration;
                LogManager.ReconfigExistingLoggers();
            }
        }
    }
}