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Cover image for Set up Serilog in .NET 6 as logging provider
Ricardo
Ricardo

Posted on • Originally published at rmauro.dev on

Set up Serilog in .NET 6 as logging provider

#csharp #dotnet #net6

Serilog is a robust API for logging with many configurations and sinks (outputs) and it is straightforward to get started in any .NET version.

Originally posted at https://rmauro.dev/setup-serilog-in-net6-as-logging-provider/

With .NET 6 the way we used to configure Serilog as a logging provider in .NET 5 it is gonne (no more, no way sir, no no, good bye), it's no longer there.

Bootstraping a .NET 6 application is difference from older version but still pretty easy.

Like many other libraries for .NET, Serilog provides diagnostic logging to files, the console, and elsewhere. It is easy to set up, has a clean API, and is portable between recent .NET platforms. Unlike other logging libraries, Serilog is built with powerful structured event data in mind.

Words from https://serilog.net/

Let's set up Serilog as Logging Provider in the native logging system in .NET so you can use the Microsoft ILogger interface.

namespace Microsoft.Extensions.Logging
{
    public interface ILogger<out TCategoryName> : ILogger
    {
    }
}
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Microsoft ILogger interface

Enough with the words - show me the code

In the Program.csadd these code changes.

using Serilog;

//create the logger and setup your sinks, filters and properties
Log.Logger = new LoggerConfiguration()
    .WriteTo.Console()
    .CreateBootstrapLogger();

var builder = WebApplication.CreateBuilder();
//after create the builder - UseSerilog

builder.Host.UseSerilog();

//redacted code
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Program implementation with Serilog

With the changes made until here we can inject the ILoggerinterface and use Serilog as a log provider.

Breaf Explanation

Set up the global variable Serilog.Logger with the sink Console and bootstrap a logger.

//create the logger and setup your sinks, filters and properties
Log.Logger = new LoggerConfiguration()
    .WriteTo.Console()
    .CreateBootstrapLogger();
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Them we have added Serilog as Logging Provider in native logging system.

builder.Host.UseSerilog();
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Output

Set up Serilog in .NET 6 as logging provider
Serilog Output Sample

Again - All done here. If you like it Subscribe for more.

Originally posted at https://rmauro.dev/setup-serilog-in-net6-as-logging-provider/

Top comments (2)

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stphnwlsh profile image
Stephen Walsh •

Nice one @rmaurodev!!

You could expand this to show how you can use appsettings.json to configure the logger too. Makes it an even easier setup and then in a container it's overridable by environment variables per deployment environment. I have a project with the local dev to console and docker to Seq in a container.

Program.cs

_ = builder.Host.UseSerilog((hostContext, loggerConfiguration) =>
            _ = loggerConfiguration.ReadFrom.Configuration(builder.Configuration));
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appsettings.json

{
  "Serilog": {
    "MinimumLevel": {
      "Default": "Debug",
      "Override": {
        "Microsoft": "Information",
        "Microsoft.AspNetCore": "Warning",
        "System": "Error"
      }
    },
    "Enrich": [
      "FromLogContext",
      "WithEnvironmentName",
      "WithMachineName"
    ],
    "WriteTo": [
      {
        "Name": "Console",
        "Args": {
          "outputTemplate": "{Timestamp:HH:mm:ss.fff zzz} [{Level}] [{SourceContext}] {Message}{NewLine}{Exception}"
        }
      }
    ],
    "Properties": {
      "ApplicationName": "MinimalApi-Local"
    }
  },
  "Logging": {
    "LogLevel": {
      "Default": "None"
    }
  },
  "AllowedHosts": "*"
}
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rmaurodev profile image
Ricardo •

Nice. Thanks for the feedback.
Wait for the next one on this subject. I'll include that.

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