serilog-log-levels: update for .NET 10 rewrite

Retarget sample and tests to net10.0, bump Serilog to 4.4.0 and
Serilog.AspNetCore to 10.0.0, and add a LoggingLevelSwitch example
with a runtime admin endpoint to flip the minimum level without a
redeploy.

Author: vladimir-pecanac-main

dotnet-logging/LogLevelsWithSerilog/LogLevelsWithSerilog/LogLevelsWithSerilog.csproj

@@ -1,18 +1,18 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
 	<PropertyGroup>
-		<TargetFramework>net7.0</TargetFramework>
+		<TargetFramework>net10.0</TargetFramework>
 		<Nullable>enable</Nullable>
 		<ImplicitUsings>enable</ImplicitUsings>
 	</PropertyGroup>
 
 	<ItemGroup>
-		<PackageReference Include="Serilog" Version="2.12.0" />
-		<PackageReference Include="Serilog.AspNetCore" Version="7.0.0" />
-		<PackageReference Include="Serilog.Extensions.Hosting" Version="7.0.0" />
-		<PackageReference Include="Serilog.Sinks.File" Version="5.0.0" />
+		<PackageReference Include="Serilog" Version="4.4.0" />
+		<PackageReference Include="Serilog.AspNetCore" Version="10.0.0" />
+		<PackageReference Include="Serilog.Extensions.Hosting" Version="10.0.0" />
+		<PackageReference Include="Serilog.Sinks.File" Version="7.0.0" />
+
 
-		
 	</ItemGroup>
 
 </Project>

dotnet-logging/LogLevelsWithSerilog/LogLevelsWithSerilog/Program.cs

@@ -1,4 +1,5 @@
 using Serilog;
+using Serilog.Core;
 using Serilog.Events;
 
 var configuration = new ConfigurationBuilder()
@@ -10,13 +11,17 @@
 Log.Information("Web Host started");
 var builder = WebApplication.CreateBuilder(args);
 
+// Wrapping the minimum level in a LoggingLevelSwitch lets us change it at
+// runtime -- e.g. from an admin endpoint -- with no redeploy and no restart.
+var levelSwitch = new LoggingLevelSwitch(LogEventLevel.Information);
+
 builder.Services.AddSerilog(options =>
 {
     //we can configure serilog from configuration
     options.ReadFrom.Configuration(configuration);
 
     //or we can configure serilog via fluent api
-    options.MinimumLevel.Information()
+    options.MinimumLevel.ControlledBy(levelSwitch)
            .MinimumLevel.Override("Microsoft", LogEventLevel.Warning)
            .MinimumLevel.Override("System", LogEventLevel.Warning)
            .WriteTo.Console(restrictedToMinimumLevel: LogEventLevel.Information,
@@ -44,4 +49,12 @@
     name: "default",
     pattern: "{controller=Home}/{action=Index}/{id?}");
 
+// e.g. POST /admin/log-level/Debug -- flips the minimum level on every sink
+// immediately, with no restart.
+app.MapPost("/admin/log-level/{level}", (LogEventLevel level) =>
+{
+    levelSwitch.MinimumLevel = level;
+    return Results.Ok($"Minimum log level set to {level}.");
+});
+
 app.Run();

dotnet-logging/LogLevelsWithSerilog/Tests/LogLevelsWithSerilogTests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
-		<TargetFramework>net7.0</TargetFramework>
+		<TargetFramework>net10.0</TargetFramework>
 		<ImplicitUsings>enable</ImplicitUsings>
 		<Nullable>enable</Nullable>