From e3816791658b8d79747310615affcbb7dbc3454c Mon Sep 17 00:00:00 2001
From: nav <nav@mgr.hangman-lab.top>
Date: Tue, 12 May 2026 08:49:34 +0000
Subject: [PATCH] feat(center-nodes): enforce nodeId and endpoint uniqueness

---
 .../src/nodes/nodes.controller.ts                 | 15 +++++++++++++++
 docs/TODO-backend-center-guild.md                 |  2 +-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/Fabric.Backend.Center/src/nodes/nodes.controller.ts b/Fabric.Backend.Center/src/nodes/nodes.controller.ts
index 433c466..77577e6 100644
--- a/Fabric.Backend.Center/src/nodes/nodes.controller.ts
+++ b/Fabric.Backend.Center/src/nodes/nodes.controller.ts
@@ -1,5 +1,6 @@
 import {
   Body,
+  ConflictException,
   Controller,
   ForbiddenException,
   Get,
@@ -23,6 +24,20 @@ export class NodesController {
       throw new ForbiddenException('invalid shared secret');
     }
 
+    const existedByNodeId = await this.nodeRepo.findOne({
+      where: { nodeId: body.nodeId },
+    });
+    if (existedByNodeId) {
+      throw new ConflictException('nodeId already exists');
+    }
+
+    const existedByEndpoint = await this.nodeRepo.findOne({
+      where: { endpoint: body.endpoint },
+    });
+    if (existedByEndpoint) {
+      throw new ConflictException('endpoint already exists');
+    }
+
     const node = this.nodeRepo.create({
       nodeId: body.nodeId,
       name: body.name,
diff --git a/docs/TODO-backend-center-guild.md b/docs/TODO-backend-center-guild.md
index b1a7861..c197bcb 100644
--- a/docs/TODO-backend-center-guild.md
+++ b/docs/TODO-backend-center-guild.md
@@ -24,7 +24,7 @@
 
 ### 1.2 Guild Node 注册与握手
 - [x] `POST /nodes/register` shared-secret 校验
-- [ ] node 唯一性校验（nodeId/endpoint）
+- [x] node 唯一性校验（nodeId/endpoint）
 - [ ] node 状态模型（active/offline/revoked）
 - [ ] `GET /nodes` 列表 + 分页
 - [ ] node 心跳接口（可选）