From 735a840945f761f80ee46f98dd388ccde1a4f6ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=AD=90=E9=BB=98?= <925456043@qq.com>
Date: Sun, 1 Mar 2026 20:01:31 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BB=A3=E7=A0=81=E8=8A=82=E7=82=B9?=
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- 在 CodeNode 执行前增加运行时引擎空值校验

- 避免空指针失败，错误信息包含 engine 标识
---
 .../src/main/java/com/easyagents/flow/core/node/CodeNode.java  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/easy-agents-flow/src/main/java/com/easyagents/flow/core/node/CodeNode.java b/easy-agents-flow/src/main/java/com/easyagents/flow/core/node/CodeNode.java
index 5cd2798..54f8123 100644
--- a/easy-agents-flow/src/main/java/com/easyagents/flow/core/node/CodeNode.java
+++ b/easy-agents-flow/src/main/java/com/easyagents/flow/core/node/CodeNode.java
@@ -57,6 +57,9 @@ public class CodeNode extends BaseNode {
         String newCode = TextTemplate.of(code).formatToString(variables);
 
         CodeRuntimeEngine codeRuntimeEngine = CodeRuntimeEngineManager.getInstance().getCodeRuntimeEngine(this.engine);
+        if (codeRuntimeEngine == null) {
+            throw new IllegalArgumentException("code runtime engine not found: " + this.engine);
+        }
         return codeRuntimeEngine.execute(newCode, this, chain);
     }