MQTTnet/Samples/Shared/ConsoleLogger.cs

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using MQTTnet.Diagnostics;

namespace MQTTnet.Samples.Shared;

public sealed class ConsoleLogger : IMqttNetLogger
{
    readonly object _consoleSyncRoot = new();

    public bool IsEnabled => true;

    public void Publish(MqttNetLogLevel logLevel, string source, string message, object[]? parameters, Exception? exception)
    {
        var foregroundColor = ConsoleColor.White;
        switch (logLevel)
        {
            case MqttNetLogLevel.Verbose:
                foregroundColor = ConsoleColor.White;
                break;

            case MqttNetLogLevel.Info:
                foregroundColor = ConsoleColor.Green;
                break;

            case MqttNetLogLevel.Warning:
                foregroundColor = ConsoleColor.DarkYellow;
                break;

            case MqttNetLogLevel.Error:
                foregroundColor = ConsoleColor.Red;
                break;
        }

        if (parameters?.Length > 0)
        {
            message = string.Format(message, parameters);
        }

        lock (_consoleSyncRoot)
        {
            Console.ForegroundColor = foregroundColor;
            Console.WriteLine(message);

            if (exception != null)
            {
                Console.WriteLine(exception);
            }
        }
    }
}