feat(uow): add uow

persistence/repositories/uow.go

@@ -0,0 +1,34 @@
+package repositories
+
+import (
+	"context"
+	"database/sql"
+)
+
+type UnitOfWork struct {
+	db *sql.DB
+}
+
+func NewUnitOfWork(db *sql.DB) *UnitOfWork {
+	return &UnitOfWork{db: db}
+}
+
+func (u *UnitOfWork) Execute(ctx context.Context, fn func(tx *sql.Tx) error) error {
+	tx, err := u.db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+
+	defer func() {
+		if err != nil {
+			_ = tx.Rollback()
+		}
+	}()
+
+	if err := fn(tx); err != nil {
+		tx.Rollback()
+		return err
+	}
+
+	return tx.Commit()
+}