Add virtual bucket feature

internal/storage/models.go

@@ -43,6 +43,20 @@ func (BucketStats) TableName() string {
 	return "bucket_stats"
 }
 
+// VirtualBucketMapping 虚拟存储桶映射模型
+type VirtualBucketMapping struct {
+	ID               uint      `gorm:"primaryKey" json:"id"`
+	VirtualBucketName string    `gorm:"uniqueIndex;size:255;not null" json:"virtual_bucket_name"`
+	RealBucketName   string    `gorm:"index;size:255;not null" json:"real_bucket_name"`
+	CreatedAt        time.Time `gorm:"not null;default:CURRENT_TIMESTAMP" json:"created_at"`
+	UpdatedAt        time.Time `gorm:"not null;default:CURRENT_TIMESTAMP" json:"updated_at"`
+}
+
+// TableName 指定表名
+func (VirtualBucketMapping) TableName() string {
+	return "virtual_bucket_mappings"
+}
+
 // UploadSession 上传会话模型（用于跟踪分片上传）
 type UploadSession struct {
 	ID             uint           `gorm:"primaryKey" json:"id"`

internal/storage/service.go

@@ -348,3 +348,81 @@ func (s *Service) GetAccessLogs(filter *AccessLogFilter) ([]*AccessLog, error) {
 	
 	return logs, nil
 }
+
+// CreateVirtualBucketMapping 创建虚拟存储桶映射
+func (s *Service) CreateVirtualBucketMapping(virtualBucketName, realBucketName string) error {
+	mapping := &VirtualBucketMapping{
+		VirtualBucketName: virtualBucketName,
+		RealBucketName:   realBucketName,
+	}
+	
+	if err := s.db.Create(mapping).Error; err != nil {
+		return fmt.Errorf("failed to create virtual bucket mapping: %w", err)
+	}
+	
+	return nil
+}
+
+// GetVirtualBucketMapping 获取虚拟存储桶映射
+func (s *Service) GetVirtualBucketMapping(virtualBucketName string) (*VirtualBucketMapping, error) {
+	var mapping VirtualBucketMapping
+	if err := s.db.Where("virtual_bucket_name = ?", virtualBucketName).First(&mapping).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			return nil, fmt.Errorf("virtual bucket mapping not found: %s", virtualBucketName)
+		}
+		return nil, fmt.Errorf("failed to get virtual bucket mapping: %w", err)
+	}
+	return &mapping, nil
+}
+
+// GetVirtualBucketMappings 获取所有虚拟存储桶映射
+func (s *Service) GetVirtualBucketMappings() ([]*VirtualBucketMapping, error) {
+	var mappings []*VirtualBucketMapping
+	if err := s.db.Find(&mappings).Error; err != nil {
+		return nil, fmt.Errorf("failed to get virtual bucket mappings: %w", err)
+	}
+	return mappings, nil
+}
+
+// UpdateVirtualBucketMapping 更新虚拟存储桶映射
+func (s *Service) UpdateVirtualBucketMapping(virtualBucketName, realBucketName string) error {
+	updates := map[string]interface{}{
+		"real_bucket_name": realBucketName,
+		"updated_at":      time.Now(),
+	}
+	
+	if err := s.db.Model(&VirtualBucketMapping{}).
+		Where("virtual_bucket_name = ?", virtualBucketName).
+		Updates(updates).Error; err != nil {
+		return fmt.Errorf("failed to update virtual bucket mapping: %w", err)
+	}
+	
+	return nil
+}
+
+// DeleteVirtualBucketMapping 删除虚拟存储桶映射
+func (s *Service) DeleteVirtualBucketMapping(virtualBucketName string) error {
+	if err := s.db.Where("virtual_bucket_name = ?", virtualBucketName).
+		Delete(&VirtualBucketMapping{}).Error; err != nil {
+		return fmt.Errorf("failed to delete virtual bucket mapping: %w", err)
+	}
+	return nil
+}
+
+// GetVirtualBucketObjects 获取虚拟存储桶中的所有对象
+func (s *Service) GetVirtualBucketObjects(virtualBucketName string) ([]*Object, error) {
+	// 首先找到虚拟存储桶对应的真实存储桶
+	mapping, err := s.GetVirtualBucketMapping(virtualBucketName)
+	if err != nil {
+		return nil, err
+	}
+	
+	// 查找所有映射到该虚拟存储桶的对象
+	var objects []*Object
+	if err := s.db.Where("bucket_name = ?", mapping.RealBucketName).
+		Find(&objects).Error; err != nil {
+		return nil, fmt.Errorf("failed to get virtual bucket objects: %w", err)
+	}
+	
+	return objects, nil
+}