[优化] 更新数据库迁移逻辑，添加 v19 版本验证，重构隧道相关表结构

openflare_server/model/migrations.go

@@ -82,6 +82,8 @@ func (databaseSchemaMigrationContext) ValidateDatabaseSchemaVersion(db *gorm.DB,
 		return validateDatabaseSchemaV17(db, backend)
 	case 18:
 		return validateDatabaseSchemaV18(db, backend)
+	case 19:
+		return validateDatabaseSchemaV19(db, backend)
 	default:
 		return fmt.Errorf("database schema validation for v%d is not defined", version)
 	}
@@ -1164,8 +1166,13 @@ func validateDatabaseSchemaV16(db *gorm.DB, backend string) error {
 	if err := validateDatabaseSchemaV15(db, backend); err != nil {
 		return err
 	}
-	if !db.Migrator().HasTable("tunnels") {
-		return fmt.Errorf("table tunnels is missing")
+	if !db.Migrator().HasColumn(&ProxyRoute{}, "tunnel_node_id") {
+		if !db.Migrator().HasTable("tunnels") {
+			return fmt.Errorf("table tunnels is missing")
+		}
+		if !db.Migrator().HasColumn(&ProxyRoute{}, "tunnel_id") {
+			return fmt.Errorf("column proxy_routes.tunnel_id is missing")
+		}
 	}
 	if !db.Migrator().HasColumn(&Node{}, "node_type") {
 		return fmt.Errorf("column nodes.node_type is missing")
@@ -1202,6 +1209,22 @@ func validateDatabaseSchemaV18(db *gorm.DB, backend string) error {
 	return nil
 }
 
+func validateDatabaseSchemaV19(db *gorm.DB, backend string) error {
+	if err := validateDatabaseSchemaV18(db, backend); err != nil {
+		return err
+	}
+	if db.Migrator().HasTable("tunnels") {
+		return fmt.Errorf("table tunnels should be dropped in v19")
+	}
+	if !db.Migrator().HasColumn(&ProxyRoute{}, "tunnel_node_id") {
+		return fmt.Errorf("column proxy_routes.tunnel_node_id is missing")
+	}
+	if db.Migrator().HasColumn(&ProxyRoute{}, "tunnel_id") {
+		return fmt.Errorf("column proxy_routes.tunnel_id should be dropped in v19")
+	}
+	return nil
+}
+
 func databaseSchemaMigrations() []databaseSchemaMigration {
 	ctx := databaseSchemaMigrationContext{}
 	migrations := []databaseSchemaMigration{}