Implementing DI in a RemObjects DataAbstract .Net Core 8 app

Data Abstract
1

I am trying to implement DI into a RemObjects DataAbstract .NET Core app. I have found a couple of articles that helped me understand:

It appears to be a bit incomplete. Here is what I am trying to implement (something like this):

public static int Main(string[] args)
{
    var host = CreateHostBuilder(args).Build();
    // Access IConfiguration from the host
    var configuration = host.Services.GetRequiredService<IConfiguration>();
    var serverSetting = configuration.GetSection("System");
    var database = configuration.GetSection("Databases");
    var monitor = host.Services.GetRequiredService<IOptionsMonitor<SystemSettings>>();
    monitor.OnChange(OnSettingsChanged);
  
  //Additional code here

}

public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
    .ConfigureAppConfiguration((context, config) =>
    {
        config.SetBasePath(Directory.GetCurrentDirectory());
        config.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
        config.AddJsonFile($"appsettings.{currentEnvironment}.json", optional: true);
    })
    .ConfigureServices((context, services) =>
    {
        services.Configure<SystemSettings>(context.Configuration.GetSection("Chronicle:System"));
        services.AddSingleton(resolver => resolver.GetRequiredService<IOptions<SystemSettings>>().Value);
        services.AddSingleton<IOptionsMonitor<SystemSettings>, OptionsMonitor<SystemSettings>>();
    });
private static void OnSettingsChanged(SystemSettings systemSettings)
{
    Console.WriteLine("Settings changed:");
    Console.WriteLine($"CDN Enabled: {systemSettings.CDN}");
    // Handle other settings as needed
}

This allows me to monitor the changes made to the appsettings.json and track changes made the the appsettings.json reacting to those changes in program.cs file.
I am not sure how I would implement that in the DI for the ApplicationServer.

appSvr = new ApplicationServer(“DataAccess.Remote2”);
appSvr.DependencyResolver.RegisterSingleton(typeof(IConfiguration), configuration);

Not sure how to implement the event model. Any help is appreciated.

3

Hi,

I’m not sure that you can mix ApplicationHost Infrastucture (.NET) with Dependency Injection support (.NET) implementations.

but your DI implementation can be something like

var server := new ApplicationServer('ServerApp2');

var container := new SimpleContainer();
// not sure that you can use IConfiguration outside of ApplicationHost's infrastructure
// container.RegisterSingleton(typeof(IConfiguration), configuration);      
container.RegisterSDK(server.NetworkServer);
container.RegisterDataAbstract();
container.RegisterServices();
server.DependencyResolver := container;