[优化] 重构数据库迁移逻辑，添加版本管理和验证功能

openflare_server/model/migrate/v15.go

@@ -0,0 +1,42 @@
+package migrate
+
+import (
+	"fmt"
+
+	"gorm.io/gorm"
+)
+
+type nodeV15 struct {
+	IPManualOverride bool `gorm:"column:ip_manual_override;not null;default:false"`
+}
+
+func init() {
+	Register(V15())
+}
+
+func V15() Migration {
+	return Migration{
+		FromVersion: 14,
+		ToVersion:   15,
+		Migrate:     migrateV15,
+		Validate:    validateV15,
+	}
+}
+
+func (nodeV15) TableName() string {
+	return "nodes"
+}
+
+func migrateV15(ctx Context, db *gorm.DB, backend string) error {
+	return ctx.ApplyCurrentSchema(db, backend)
+}
+
+func validateV15(ctx Context, db *gorm.DB, backend string) error {
+	if err := ctx.ValidateDatabaseSchemaVersion(db, backend, 14); err != nil {
+		return err
+	}
+	if db == nil || !db.Migrator().HasColumn(&nodeV15{}, "ip_manual_override") {
+		return fmt.Errorf("column nodes.ip_manual_override is missing")
+	}
+	return nil
+}