refac: atomic merge, lost-update race, RunPurge cost, duplicated walks

internal/infrastructure/persistence/repositories/transactor.go

@@ -0,0 +1,30 @@
+package persistence
+
+import (
+	domain "RenewCMS/internal/domain/transaction"
+	"context"
+
+	"gorm.io/gorm"
+)
+
+var _ domain.Transactor = &Transactor{}
+
+type Transactor struct {
+	db *gorm.DB
+}
+
+func NewTransactor(db *gorm.DB) *Transactor {
+	return &Transactor{db}
+}
+
+func (t *Transactor) Run(ctx context.Context, work func(domain.Repositories) error) error {
+	return t.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		return work(domain.Repositories{
+			Articles: NewArticleRepository(tx),
+			Sites:    NewSiteRepository(tx),
+			Authors:  NewAuthorRepository(tx),
+			Entries:  NewEntryRepository(tx),
+			Images:   NewImageRepository(tx),
+		})
+	})
+}