Initial commit: SWP.Core enterprise framework with multi-tenant architecture, configuration management, security, telemetry and comprehensive test suite

Core/Database/ConnectionFactory/IDbConnectionFactory.cs

@@ -0,0 +1,8 @@
+namespace SWP.Core.Database.ConnectionFactory
+{
+	public interface IDbConnectionFactory
+	{
+		System.Data.IDbConnection Create();
+		System.Data.IDbConnection Create(ConnectionStringParameters connectionStringTemplateParameters);
+	}
+}

Core/Database/ConnectionFactory/PostgresConnectionFactory.cs

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+using System.Data;
+using Npgsql;
+
+namespace SWP.Core.Database.ConnectionFactory
+{
+
+	public record ConnectionStringParameters(string User, string Pwd);
+
+	public class PostgresConnectionFactory : IDbConnectionFactory, IAsyncDisposable
+	{
+		private readonly NpgsqlDataSource _baseDataSource;
+		private readonly Action<NpgsqlDataSourceBuilder> _configureDataSource;
+		private readonly Microsoft.Extensions.Logging.ILoggerFactory _loggerFactory; //this is not tested nor implemented, I just created it as an idea
+
+		public PostgresConnectionFactory(
+			string connectionString,
+			Microsoft.Extensions.Logging.ILoggerFactory loggerFactory = null,
+			Action<NpgsqlDataSourceBuilder> configureDataSource = null)
+		{
+			_loggerFactory = loggerFactory;
+			_configureDataSource = configureDataSource ?? (builder => { });
+
+			// Opret base data source med konfiguration
+			var dataSourceBuilder = new NpgsqlDataSourceBuilder(connectionString);
+			ConfigureDataSourceBuilder(dataSourceBuilder);
+			_baseDataSource = dataSourceBuilder.Build();
+		}
+
+		public IDbConnection Create()
+		{
+			return _baseDataSource.CreateConnection();
+		}
+
+		public IDbConnection Create(ConnectionStringParameters param)
+		{
+			var connectionStringBuilder = new NpgsqlConnectionStringBuilder(
+				_baseDataSource.ConnectionString)
+			{
+				Username = param.User,
+				Password = param.Pwd
+			};
+
+			var tempDataSourceBuilder = new NpgsqlDataSourceBuilder(
+				connectionStringBuilder.ToString());
+
+			ConfigureDataSourceBuilder(tempDataSourceBuilder);
+
+			var tempDataSource = tempDataSourceBuilder.Build();
+			return tempDataSource.CreateConnection();
+		}
+
+		private void ConfigureDataSourceBuilder(NpgsqlDataSourceBuilder builder)
+		{
+			if (_loggerFactory != null)
+				builder.UseLoggerFactory(_loggerFactory);
+
+			_configureDataSource?.Invoke(builder);
+		}
+
+		public async ValueTask DisposeAsync()
+		{
+			await _baseDataSource.DisposeAsync();
+		}
+	}
+}