Microsoft.Extensions.Logging.Abstractions 8.0.1

Prefix Reserved
There is a newer version of this package available.
See the version list below for details.
dotnet add package Microsoft.Extensions.Logging.Abstractions --version 8.0.1                
NuGet\Install-Package Microsoft.Extensions.Logging.Abstractions -Version 8.0.1                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.1" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Microsoft.Extensions.Logging.Abstractions --version 8.0.1                
#r "nuget: Microsoft.Extensions.Logging.Abstractions, 8.0.1"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Microsoft.Extensions.Logging.Abstractions as a Cake Addin
#addin nuget:?package=Microsoft.Extensions.Logging.Abstractions&version=8.0.1

// Install Microsoft.Extensions.Logging.Abstractions as a Cake Tool
#tool nuget:?package=Microsoft.Extensions.Logging.Abstractions&version=8.0.1                

About

Microsoft.Extensions.Logging.Abstractions provides abstractions of logging. Interfaces defined in this package are implemented by classes in Microsoft.Extensions.Logging and other logging packages.

This package includes a logging source generator that produces highly efficient and optimized code for logging message methods.

Key Features

  • Define main logging abstraction interfaces like ILogger, ILoggerFactory, ILoggerProvider, etc.

How to Use

Custom logger provider implementation example
using Microsoft.Extensions.Logging;

public sealed class ColorConsoleLogger : ILogger
{
    private readonly string _name;
    private readonly Func<ColorConsoleLoggerConfiguration> _getCurrentConfig;

    public ColorConsoleLogger(
        string name,
        Func<ColorConsoleLoggerConfiguration> getCurrentConfig) =>
        (_name, _getCurrentConfig) = (name, getCurrentConfig);

    public IDisposable? BeginScope<TState>(TState state) where TState : notnull => default!;

    public bool IsEnabled(LogLevel logLevel) =>
        _getCurrentConfig().LogLevelToColorMap.ContainsKey(logLevel);

    public void Log<TState>(
        LogLevel logLevel,
        EventId eventId,
        TState state,
        Exception? exception,
        Func<TState, Exception?, string> formatter)
    {
        if (!IsEnabled(logLevel))
        {
            return;
        }

        ColorConsoleLoggerConfiguration config = _getCurrentConfig();
        if (config.EventId == 0 || config.EventId == eventId.Id)
        {
            ConsoleColor originalColor = Console.ForegroundColor;

            Console.ForegroundColor = config.LogLevelToColorMap[logLevel];
            Console.WriteLine($"[{eventId.Id,2}: {logLevel,-12}]");

            Console.ForegroundColor = originalColor;
            Console.Write($"     {_name} - ");

            Console.ForegroundColor = config.LogLevelToColorMap[logLevel];
            Console.Write($"{formatter(state, exception)}");

            Console.ForegroundColor = originalColor;
            Console.WriteLine();
        }
    }
}

Create logs

// Worker class that uses logger implementation of teh interface ILogger<T>

public sealed class Worker : BackgroundService
{
    private readonly ILogger<Worker> _logger;

    public Worker(ILogger<Worker> logger) =>
        _logger = logger;

    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
    {
        while (!stoppingToken.IsCancellationRequested)
        {
            _logger.LogInformation("Worker running at: {time}", DateTimeOffset.UtcNow);
            await Task.Delay(1_000, stoppingToken);
        }
    }
}

Use source generator
public static partial class Log
{
    [LoggerMessage(
        EventId = 0,
        Level = LogLevel.Critical,
        Message = "Could not open socket to `{hostName}`")]
    public static partial void CouldNotOpenSocket(this ILogger logger, string hostName);
}

public partial class InstanceLoggingExample
{
    private readonly ILogger _logger;

    public InstanceLoggingExample(ILogger logger)
    {
        _logger = logger;
    }

    [LoggerMessage(
        EventId = 0,
        Level = LogLevel.Critical,
        Message = "Could not open socket to `{hostName}`")]
    public partial void CouldNotOpenSocket(string hostName);
}

Main Types

The main types provided by this library are:

  • Microsoft.Extensions.Logging.ILogger
  • Microsoft.Extensions.Logging.ILoggerProvider
  • Microsoft.Extensions.Logging.ILoggerFactory
  • Microsoft.Extensions.Logging.ILogger<TCategoryName>
  • Microsoft.Extensions.Logging.LogLevel
  • Microsoft.Extensions.Logging.Logger<T>
  • Microsoft.Extensions.Logging.LoggerMessage
  • Microsoft.Extensions.Logging.Abstractions.NullLogger

Additional Documentation

Microsoft.Extensions.Logging Microsoft.Extensions.Logging.Console Microsoft.Extensions.Logging.Debug Microsoft.Extensions.Logging.EventSource Microsoft.Extensions.Logging.EventLog Microsoft.Extensions.Logging.TraceSource

Feedback & Contributing

Microsoft.Extensions.Logging.Abstractions is released as open source under the MIT license. Bug reports and contributions are welcome at the GitHub repository.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 is compatible.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 is compatible.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (9.2K)

Showing the top 5 NuGet packages that depend on Microsoft.Extensions.Logging.Abstractions:

Package Downloads
Microsoft.Extensions.Logging

Logging infrastructure default implementation for Microsoft.Extensions.Logging.

Microsoft.Extensions.Hosting.Abstractions

Hosting and startup abstractions for applications.

Microsoft.Extensions.Caching.Memory

In-memory cache implementation of Microsoft.Extensions.Caching.Memory.IMemoryCache.

Microsoft.Extensions.Logging.Configuration

Configuration support for Microsoft.Extensions.Logging.

Microsoft.Extensions.Http

The HttpClient factory is a pattern for configuring and retrieving named HttpClients in a composable way. The HttpClient factory provides extensibility to plug in DelegatingHandlers that address cross-cutting concerns such as service location, load balancing, and reliability. The default HttpClient factory provides built-in diagnostics and logging and manages the lifetimes of connections in a performant way. Commonly Used Types: System.Net.Http.IHttpClientFactory

GitHub repositories (646)

Showing the top 5 popular GitHub repositories that depend on Microsoft.Extensions.Logging.Abstractions:

Repository Stars
microsoft/PowerToys
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jellyfin/jellyfin
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DevToys-app/DevToys
A Swiss Army knife for developers.
dotnet/maui
.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
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Integrate cutting-edge LLM technology quickly and easily into your apps
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9.0.0-rc.2.24473.5 347,952 10/8/2024
9.0.0-rc.1.24431.7 266,569 9/10/2024
9.0.0-preview.7.24405.7 153,193 8/13/2024
9.0.0-preview.6.24327.7 212,617 7/9/2024
9.0.0-preview.5.24306.7 162,501 6/11/2024
9.0.0-preview.4.24266.19 122,385 5/21/2024
9.0.0-preview.3.24172.9 280,396 4/11/2024
9.0.0-preview.2.24128.5 168,496 3/12/2024
9.0.0-preview.1.24080.9 179,737 2/13/2024
8.0.2 18,495,996 10/8/2024
8.0.1 66,149,692 3/12/2024
8.0.0 191,010,740 11/14/2023
8.0.0-rc.2.23479.6 1,898,741 10/10/2023
8.0.0-rc.1.23419.4 1,182,943 9/12/2023
8.0.0-preview.7.23375.6 625,096 8/8/2023
8.0.0-preview.6.23329.7 418,843 7/11/2023
8.0.0-preview.5.23280.8 282,932 6/13/2023
8.0.0-preview.4.23259.5 502,640 5/16/2023
8.0.0-preview.3.23174.8 409,034 4/11/2023
8.0.0-preview.2.23128.3 328,885 3/14/2023
8.0.0-preview.1.23110.8 317,591 2/21/2023
7.0.1 75,098,694 6/13/2023
7.0.0 251,675,953 11/7/2022
7.0.0-rc.2.22472.3 1,451,085 10/11/2022
7.0.0-rc.1.22426.10 435,610 9/14/2022
7.0.0-preview.7.22375.6 431,997 8/9/2022
7.0.0-preview.6.22324.4 264,434 7/12/2022
7.0.0-preview.5.22301.12 176,646 6/14/2022
7.0.0-preview.4.22229.4 492,474 5/10/2022
7.0.0-preview.3.22175.4 191,572 4/13/2022
7.0.0-preview.2.22152.2 242,388 3/14/2022
7.0.0-preview.1.22076.8 185,510 2/17/2022
6.0.4 43,310,336 6/13/2023
6.0.3 49,986,362 11/7/2022
6.0.2 45,939,551 9/13/2022
6.0.1 160,341,733 3/8/2022
6.0.0 563,392,621 11/8/2021
6.0.0-rc.2.21480.5 1,851,101 10/12/2021
6.0.0-rc.1.21451.13 610,254 9/14/2021
6.0.0-preview.7.21377.19 820,557 8/10/2021
6.0.0-preview.6.21352.12 344,800 7/14/2021
6.0.0-preview.5.21301.5 281,074 6/15/2021
6.0.0-preview.4.21253.7 183,169 5/24/2021
6.0.0-preview.3.21201.4 590,296 4/8/2021
6.0.0-preview.2.21154.6 228,942 3/11/2021 6.0.0-preview.2.21154.6 is deprecated because it is no longer maintained.
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5.0.0 505,782,653 11/9/2020 5.0.0 is deprecated because it is no longer maintained.
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5.0.0-preview.4.20251.6 307,999 5/18/2020 5.0.0-preview.4.20251.6 is deprecated because it is no longer maintained.
5.0.0-preview.3.20215.2 235,375 4/23/2020 5.0.0-preview.3.20215.2 is deprecated because it is no longer maintained.
5.0.0-preview.2.20160.3 316,116 4/2/2020 5.0.0-preview.2.20160.3 is deprecated because it is no longer maintained.
5.0.0-preview.1.20120.4 166,591 3/16/2020 5.0.0-preview.1.20120.4 is deprecated because it is no longer maintained.
3.1.32 21,901,860 12/13/2022
3.1.31 3,635,190 11/8/2022
3.1.30 2,465,402 10/11/2022
3.1.29 2,591,463 9/13/2022
3.1.28 6,325,343 8/9/2022
3.1.27 2,377,566 7/12/2022
3.1.26 4,124,265 6/14/2022
3.1.25 3,284,910 5/10/2022
3.1.24 3,817,218 4/11/2022
3.1.23 4,690,871 3/8/2022
3.1.22 18,671,129 12/14/2021
3.1.21 10,033,464 11/7/2021
3.1.20 5,297,830 10/11/2021
3.1.19 5,488,836 9/14/2021
3.1.18 61,394,433 8/10/2021
3.1.17 7,369,208 7/13/2021
3.1.16 16,674,746 6/8/2021
3.1.15 8,419,218 5/11/2021
3.1.14 14,381,413 4/6/2021
3.1.13 13,917,057 3/9/2021
3.1.12 12,457,565 2/9/2021
3.1.11 20,058,839 1/12/2021
3.1.10 27,921,587 11/9/2020
3.1.9 78,911,711 10/13/2020
3.1.8 246,414,624 9/8/2020
3.1.7 42,790,203 8/11/2020
3.1.6 47,035,045 7/14/2020
3.1.5 47,828,434 6/9/2020
3.1.4 54,887,280 5/12/2020
3.1.3 114,505,808 3/24/2020
3.1.2 80,864,546 2/18/2020
3.1.1 44,728,933 1/14/2020
3.1.0 180,386,638 12/3/2019
3.1.0-preview3.19553.2 1,992,829 11/13/2019 3.1.0-preview3.19553.2 is deprecated because it is no longer maintained.
3.1.0-preview2.19525.4 106,974 11/1/2019 3.1.0-preview2.19525.4 is deprecated because it is no longer maintained.
3.1.0-preview1.19506.1 1,266,854 10/15/2019 3.1.0-preview1.19506.1 is deprecated because it is no longer maintained.
3.0.3 162,341,525 2/18/2020 3.0.3 is deprecated because it is no longer maintained.
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3.0.1 7,446,128 11/18/2019 3.0.1 is deprecated because it is no longer maintained.
3.0.0 135,304,099 9/23/2019 3.0.0 is deprecated because it is no longer maintained.
3.0.0-rc1.19456.10 171,304 9/16/2019 3.0.0-rc1.19456.10 is deprecated because it is no longer maintained.
3.0.0-preview9.19423.4 1,672,254 9/4/2019 3.0.0-preview9.19423.4 is deprecated because it is no longer maintained.
3.0.0-preview8.19405.4 611,342 8/13/2019 3.0.0-preview8.19405.4 is deprecated because it is no longer maintained.
3.0.0-preview7.19362.4 206,432 7/23/2019 3.0.0-preview7.19362.4 is deprecated because it is no longer maintained.
3.0.0-preview6.19304.6 468,458 6/12/2019 3.0.0-preview6.19304.6 is deprecated because it is no longer maintained.
3.0.0-preview5.19227.9 782,674 5/6/2019 3.0.0-preview5.19227.9 is deprecated because it is no longer maintained.
3.0.0-preview4.19216.2 53,865 4/18/2019 3.0.0-preview4.19216.2 is deprecated because it is no longer maintained.
3.0.0-preview3.19153.1 394,894 3/6/2019 3.0.0-preview3.19153.1 is deprecated because it is no longer maintained.
3.0.0-preview.19074.2 178,175 1/29/2019 3.0.0-preview.19074.2 is deprecated because it is no longer maintained.
3.0.0-preview.18572.1 164,435 12/4/2018 3.0.0-preview.18572.1 is deprecated because it is no longer maintained.
2.2.0 556,970,766 12/3/2018 2.2.0 is deprecated because it is no longer maintained.
2.2.0-preview3-35497 559,115 10/17/2018 2.2.0-preview3-35497 is deprecated because it is no longer maintained.
2.2.0-preview2-35157 564,197 9/12/2018 2.2.0-preview2-35157 is deprecated because it is no longer maintained.
2.2.0-preview1-35029 252,886 8/22/2018 2.2.0-preview1-35029 is deprecated because it is no longer maintained.
2.1.1 468,586,476 6/18/2018
2.1.0 489,374,477 5/29/2018
2.1.0-rc1-final 657,184 5/6/2018 2.1.0-rc1-final is deprecated because it is no longer maintained.
2.1.0-preview2-final 833,263 4/10/2018 2.1.0-preview2-final is deprecated because it is no longer maintained.
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2.0.0 440,688,501 8/11/2017 2.0.0 is deprecated because it is no longer maintained.
2.0.0-preview2-final 427,310 6/28/2017 2.0.0-preview2-final is deprecated because it is no longer maintained.
2.0.0-preview1-final 1,159,600 5/10/2017 2.0.0-preview1-final is deprecated because it is no longer maintained.
1.1.2 29,574,262 5/9/2017 1.1.2 is deprecated because it is no longer maintained.
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1.1.0 21,229,472 11/16/2016 1.1.0 is deprecated because it is no longer maintained.
1.1.0-preview1-final 207,681 10/24/2016 1.1.0-preview1-final is deprecated because it is no longer maintained.
1.0.2 125,582,688 3/6/2017 1.0.2 is deprecated because it is no longer maintained.
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1.0.0-rc2-final 2,192,532 5/16/2016 1.0.0-rc2-final is deprecated because it is no longer maintained.
1.0.0-rc1-final 889,677 11/18/2015 1.0.0-rc1-final is deprecated because it is no longer maintained.