First Commit

Helpers/ADS.Helpers.Data/ADS.Helpers.Data.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Dapper" Version="2.1.66" />
+    <PackageReference Include="Microsoft.Data.SqlClient" Version="6.1.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ADS.Helpers.MultiTenant\ADS.Helpers.MultiTenant.csproj" />
+  </ItemGroup>
+
+</Project>

Helpers/ADS.Helpers.Data/Abstractions/ITenantDbConnectionFactory.cs

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+using System.Data;
+
+namespace ADS.Helpers.Data.Abstractions;
+
+public interface ITenantDbConnectionFactory
+{
+    IDbConnection Create();
+}

Helpers/ADS.Helpers.Data/Extensions/ServiceCollectionExtensions.cs

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+using ADS.Helpers.Data.Abstractions;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace ADS.Helpers.Data.Extensions;
+
+public static class ServiceCollectionExtensions
+{
+    public static IServiceCollection AddAdsTenantDb(this IServiceCollection services)
+    {
+        services.AddScoped<ITenantDbConnectionFactory, TenantDbConnectionFactory>();
+        return services;
+    }
+}

Helpers/ADS.Helpers.Data/TenantDbConnectionFactory.cs

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+using System.Data;
+using ADS.Helpers.Data.Abstractions;
+using ADS.Helpers.MultiTenant.Context; // o .Abstractions (según donde esté tu interfaz)
+using Microsoft.Data.SqlClient;
+
+namespace ADS.Helpers.Data;
+
+public sealed class TenantDbConnectionFactory : ITenantDbConnectionFactory
+{
+    private readonly ITenantContextAccessor _tenantAccessor;
+
+    public TenantDbConnectionFactory(ITenantContextAccessor tenantAccessor)
+        => _tenantAccessor = tenantAccessor;
+
+    public IDbConnection Create()
+    {
+        var tenant = _tenantAccessor.Current
+            ?? throw new InvalidOperationException("TENANT_NOT_RESOLVED");
+
+        var cs = tenant.Database?.ConnectionString;
+        if (string.IsNullOrWhiteSpace(cs))
+            throw new InvalidOperationException("TENANT_CONNECTION_STRING_MISSING");
+
+        return new SqlConnection(cs);
+    }
+}

Helpers/ADS.Helpers.Data/readme.md

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+7) Usarlo en cualquier micro (GPS incluido)
+
+En el Program.cs del micro:
+
+using ADS.Helpers.Data.Extensions;
+
+builder.Services.AddAdsMiddlewares(builder.Configuration); // tu pipeline tenant
+builder.Services.AddAdsTenantDb();
+
+
+Y en repositorios (Dapper):
+
+using ADS.Helpers.Data.Abstractions;
+
+using var cn = _dbFactory.Create();