itca_api_sap_wms/Net.Data/LocalData.cs

using Microsoft.Extensions.Configuration;
using System;

namespace Net.Data
{
    public class LocalData
    {
        public static string ConnectionString { get; private set; }

        // Esquema HANA: por defecto la compañia del Service Layer (SapServiceLayer:company)
        public static string Schema { get; private set; }

        // Unico punto de lectura de las credenciales HANA (seccion "Hana" de appsettings.json)
        public static void Configure(IConfiguration configuration)
        {
            var server = configuration["Hana:server"];
            var user = configuration["Hana:user"];
            var password = configuration["Hana:password"];

            if (string.IsNullOrWhiteSpace(server) || string.IsNullOrWhiteSpace(user) || string.IsNullOrEmpty(password))
            {
                throw new InvalidOperationException("Falta la seccion \"Hana\" (server, user, password) en appsettings.json");
            }

            ConnectionString = $"Server={server};UserName={user};Password={password}";

            var schema = configuration["Hana:schema"];
            if (string.IsNullOrWhiteSpace(schema)) schema = configuration["SapServiceLayer:company"];
            if (string.IsNullOrWhiteSpace(schema))
            {
                throw new InvalidOperationException("Falta el esquema HANA: configure Hana:schema o SapServiceLayer:company en appsettings.json");
            }

            Schema = schema;
        }
    }
}