Initial project snapshot

backend/internal/platform/postgres/postgres.go

@@ -0,0 +1,33 @@
+package postgres
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"github.com/example/remote-access-platform/backend/internal/platform/config"
+)
+
+func Open(ctx context.Context, cfg config.PostgresConfig) (*pgxpool.Pool, error) {
+	poolConfig, err := pgxpool.ParseConfig(cfg.DSN)
+	if err != nil {
+		return nil, fmt.Errorf("parse postgres dsn: %w", err)
+	}
+
+	poolConfig.MaxConns = cfg.MaxConns
+	poolConfig.MinConns = cfg.MinConns
+	poolConfig.ConnConfig.ConnectTimeout = cfg.ConnectTimeout
+
+	pool, err := pgxpool.NewWithConfig(ctx, poolConfig)
+	if err != nil {
+		return nil, fmt.Errorf("create postgres pool: %w", err)
+	}
+
+	if err := pool.Ping(ctx); err != nil {
+		pool.Close()
+		return nil, fmt.Errorf("ping postgres: %w", err)
+	}
+
+	return pool, nil
+}