parr_api/PARR.Master/ParrMasterInstaller.cs

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using PARR.BLL;
using PARR.DAL;

namespace PARR.Master
{
    public static class ParrMasterInstaller
    {
        public static void InstallMasterServices(this IServiceCollection services, IConfiguration configuration)
        {
            services.InstallBllServices(configuration);
            services.InstallDalServices(configuration);

            // settings
            //SettingsFromDb configuration
            //var settingsFromDb = new SettingsFromDb();
            //configuration.GetSection(nameof(SettingsFromDb)).Bind(settingsFromDb);
            //services.AddSingleton(settingsFromDb);

            //add other services
            //services.AddTransient<IEsppApiService, EsppApiService>();
        }

        public static IConfigurationBuilder AddMasterConfigurations(this IConfigurationBuilder builder, IServiceCollection services)
        {
            builder.AddDalConfigurations(services);

            return builder;
        }

        public static void AddMasterSettings(this IServiceCollection services, IConfiguration configuration)
        {
            services.AddDallSettings(configuration);
        }
    }
}