Microsoft.Extensions.Logging.Abstractions 8.0.1

The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org. Prefix Reserved
There is a newer prerelease 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 (8.1K)

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

Package Downloads
Microsoft.Extensions.Logging The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

Logging infrastructure default implementation for Microsoft.Extensions.Logging.

Microsoft.Extensions.Hosting.Abstractions The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

Hosting and startup abstractions for applications.

Microsoft.Extensions.Caching.Memory The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

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

Microsoft.Extensions.Logging.Configuration The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

Configuration support for Microsoft.Extensions.Logging.

Microsoft.AspNetCore.Authorization The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

ASP.NET Core authorization classes. Commonly used types: Microsoft.AspNetCore.Authorization.AllowAnonymousAttribute Microsoft.AspNetCore.Authorization.AuthorizeAttribute This package was built from the source code at https://github.com/dotnet/aspnetcore/tree/d4eca39c3fc1944b2c6431bf6b22036bdb176c0d

GitHub repositories (569)

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

Repository Stars
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9.0.0-preview.3.24172.9 62,985 4/11/2024
9.0.0-preview.2.24128.5 63,138 3/12/2024
9.0.0-preview.1.24080.9 104,128 2/13/2024
8.0.1 7,627,828 3/12/2024
8.0.0 57,681,644 11/14/2023
8.0.0-rc.2.23479.6 1,202,902 10/10/2023
8.0.0-rc.1.23419.4 853,411 9/12/2023
8.0.0-preview.7.23375.6 397,761 8/8/2023
8.0.0-preview.6.23329.7 319,644 7/11/2023
8.0.0-preview.5.23280.8 234,575 6/13/2023
8.0.0-preview.4.23259.5 358,597 5/16/2023
8.0.0-preview.3.23174.8 287,371 4/11/2023
8.0.0-preview.2.23128.3 286,368 3/14/2023
8.0.0-preview.1.23110.8 277,457 2/21/2023
7.0.1 47,812,002 6/13/2023
7.0.0 187,291,457 11/7/2022
7.0.0-rc.2.22472.3 579,150 10/11/2022
7.0.0-rc.1.22426.10 399,580 9/14/2022
7.0.0-preview.7.22375.6 404,764 8/9/2022
7.0.0-preview.6.22324.4 219,259 7/12/2022
7.0.0-preview.5.22301.12 165,110 6/14/2022
7.0.0-preview.4.22229.4 408,929 5/10/2022
7.0.0-preview.3.22175.4 175,276 4/13/2022
7.0.0-preview.2.22152.2 222,126 3/14/2022
7.0.0-preview.1.22076.8 160,430 2/17/2022
6.0.4 22,904,803 6/13/2023
6.0.3 39,803,574 11/7/2022
6.0.2 37,186,742 9/13/2022
6.0.2-mauipre.1.22102.15 139,846 2/15/2022
6.0.2-mauipre.1.22054.8 240,027 1/19/2022
6.0.1 134,747,209 3/8/2022
6.0.0 429,237,475 11/8/2021
6.0.0-rc.2.21480.5 1,697,772 10/12/2021
6.0.0-rc.1.21451.13 548,850 9/14/2021
6.0.0-preview.7.21377.19 775,024 8/10/2021
6.0.0-preview.6.21352.12 326,178 7/14/2021
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5.0.0 438,757,333 11/9/2020
5.0.0-rc.2.20475.5 1,019,654 10/13/2020
5.0.0-rc.1.20451.14 590,980 9/14/2020
5.0.0-preview.8.20407.11 467,594 8/25/2020
5.0.0-preview.7.20364.11 238,080 7/21/2020
5.0.0-preview.6.20305.6 140,292 6/25/2020
5.0.0-preview.5.20278.1 64,301 6/10/2020
5.0.0-preview.4.20251.6 304,476 5/18/2020
5.0.0-preview.3.20215.2 229,790 4/23/2020
5.0.0-preview.2.20160.3 307,428 4/2/2020
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3.1.32 12,767,781 12/13/2022
3.1.31 2,962,380 11/8/2022
3.1.30 1,944,788 10/11/2022
3.1.29 1,953,829 9/13/2022
3.1.28 5,351,980 8/9/2022
3.1.27 2,021,630 7/12/2022
3.1.26 3,736,363 6/14/2022
3.1.25 2,990,179 5/10/2022
3.1.24 3,294,056 4/11/2022
3.1.23 4,154,462 3/8/2022
3.1.22 15,289,147 12/14/2021
3.1.21 8,979,551 11/7/2021
3.1.20 4,681,006 10/11/2021
3.1.19 5,034,459 9/14/2021
3.1.18 52,399,326 8/10/2021
3.1.17 6,680,015 7/13/2021
3.1.16 14,150,188 6/8/2021
3.1.15 7,888,450 5/11/2021
3.1.14 13,126,431 4/6/2021
3.1.13 12,947,851 3/9/2021
3.1.12 11,522,924 2/9/2021
3.1.11 18,462,078 1/12/2021
3.1.10 25,807,283 11/9/2020
3.1.9 70,774,253 10/13/2020
3.1.8 217,109,118 9/8/2020
3.1.7 39,595,744 8/11/2020
3.1.6 43,872,435 7/14/2020
3.1.5 44,522,136 6/9/2020
3.1.4 49,671,356 5/12/2020
3.1.3 93,243,223 3/24/2020
3.1.2 76,056,666 2/18/2020
3.1.1 42,089,382 1/14/2020
3.1.0 147,038,591 12/3/2019
3.1.0-preview3.19553.2 1,609,665 11/13/2019
3.1.0-preview2.19525.4 104,411 11/1/2019
3.1.0-preview1.19506.1 1,199,102 10/15/2019
3.0.3 118,295,108 2/18/2020
3.0.2 1,137,918 1/14/2020
3.0.1 6,705,231 11/18/2019
3.0.0 117,459,373 9/23/2019
3.0.0-rc1.19456.10 162,814 9/16/2019
3.0.0-preview9.19423.4 1,620,117 9/4/2019
3.0.0-preview8.19405.4 587,321 8/13/2019
3.0.0-preview7.19362.4 201,519 7/23/2019
3.0.0-preview6.19304.6 424,963 6/12/2019
3.0.0-preview5.19227.9 755,724 5/6/2019
3.0.0-preview4.19216.2 52,961 4/18/2019
3.0.0-preview3.19153.1 383,494 3/6/2019
3.0.0-preview.19074.2 174,100 1/29/2019
3.0.0-preview.18572.1 159,316 12/4/2018
2.2.0 474,201,138 12/3/2018
2.2.0-preview3-35497 546,256 10/17/2018
2.2.0-preview2-35157 547,981 9/12/2018
2.2.0-preview1-35029 248,352 8/22/2018
2.1.1 374,732,940 6/18/2018
2.1.0 418,634,928 5/29/2018
2.1.0-rc1-final 626,296 5/6/2018
2.1.0-preview2-final 796,900 4/10/2018
2.1.0-preview1-final 835,305 2/26/2018
2.0.2 34,375,397 5/7/2018
2.0.1 48,710,375 3/13/2018
2.0.0 377,566,822 8/11/2017
2.0.0-preview2-final 401,375 6/28/2017
2.0.0-preview1-final 1,129,737 5/10/2017
1.1.2 27,759,526 5/9/2017
1.1.1 42,831,125 3/6/2017
1.1.0 19,253,016 11/16/2016
1.1.0-preview1-final 205,572 10/24/2016
1.0.2 121,085,172 3/6/2017
1.0.1 4,702,625 12/12/2016
1.0.0 51,789,700 6/27/2016
1.0.0-rc2-final 2,153,432 5/16/2016
1.0.0-rc1-final 873,821 11/18/2015