Je suis donc tombé sur cette solution, inspirée par la réponse acceptée:
Program.cs
public class Program
{
public static void Main(string[] args)
{
IServiceCollection services = new ServiceCollection();
// Startup.cs finally :)
Startup startup = new Startup();
startup.ConfigureServices(services);
IServiceProvider serviceProvider = services.BuildServiceProvider();
//configure console logging
serviceProvider
.GetService<ILoggerFactory>()
.AddConsole(LogLevel.Debug);
var logger = serviceProvider.GetService<ILoggerFactory>()
.CreateLogger<Program>();
logger.LogDebug("Logger is working!");
// Get Service and call method
var service = serviceProvider.GetService<IMyService>();
service.MyServiceMethod();
}
}
Startup.cs
public class Startup
{
IConfigurationRoot Configuration { get; }
public Startup()
{
var builder = new ConfigurationBuilder()
.AddJsonFile("appsettings.json");
Configuration = builder.Build();
}
public void ConfigureServices(IServiceCollection services)
{
services.AddLogging();
services.AddSingleton<IConfigurationRoot>(Configuration);
services.AddSingleton<IMyService, MyService>();
}
}
appsettings.json
{
"SomeConfigItem": {
"Token": "8201342s223u2uj328",
"BaseUrl": "http://localhost:5000"
}
}
MyService.cs
public class MyService : IMyService
{
private readonly string _baseUrl;
private readonly string _token;
private readonly ILogger<MyService> _logger;
public MyService(ILoggerFactory loggerFactory, IConfigurationRoot config)
{
var baseUrl = config["SomeConfigItem:BaseUrl"];
var token = config["SomeConfigItem:Token"];
_baseUrl = baseUrl;
_token = token;
_logger = loggerFactory.CreateLogger<MyService>();
}
public async Task MyServiceMethod()
{
_logger.LogDebug(_baseUrl);
_logger.LogDebug(_token);
}
}
IMyService.cs
public interface IMyService
{
Task MyServiceMethod();
}