feat: 将LLM配置主存储迁移到MySQL

变更项: 1) 新增 t_llm_config 数据访问层与建表逻辑。 2) Robot 启动时自动初始化并在空库时从 YAML 导入。 3) 后台 system LLM API 改为读写 MySQL。 4) LLMRegistry 改为优先 MySQL 读取并回退 YAML。 5) DashboardServer 挂载 llm_config_db 提供后台访问。

admin/dashboard/blueprints/system.py

@@ -39,6 +39,43 @@ def _save_system_yaml(config_obj: dict) -> None:
         yaml.safe_dump(config_obj, f, allow_unicode=True, sort_keys=False)
 
 
+def _load_llm_config_runtime() -> dict:
+    """读取运行时 LLM 配置。
+
+    读取优先级：
+    1. 优先从机器人挂载的 MySQL 配置读取（主数据源）；
+    2. 若数据库对象不可用或读取异常，回退到 config.yaml（兜底）。
+    """
+    try:
+        server = current_app.dashboard_server
+        llm_config_db = getattr(server, "llm_config_db", None)
+        if llm_config_db:
+            row = llm_config_db.get_config() or {}
+            if row:
+                return {
+                    "default_backend": row.get("default_backend", ""),
+                    "backends": row.get("backends", {}) or {},
+                    "scenes": row.get("scenes", {}) or {},
+                }
+    except Exception as e:
+        logger.warning(f"从 MySQL 读取 LLM 配置失败，回退 YAML: {e}")
+
+    config_obj = _load_system_yaml()
+    llm_config = config_obj.get("llm", {}) or {}
+    return llm_config if isinstance(llm_config, dict) else {}
+
+
+def _save_llm_config_runtime(llm_config: dict) -> None:
+    """保存运行时 LLM 配置到主数据源（MySQL）。"""
+    server = current_app.dashboard_server
+    llm_config_db = getattr(server, "llm_config_db", None)
+    if not llm_config_db:
+        raise RuntimeError("llm_config_db 未初始化，无法保存 LLM 配置到 MySQL")
+    ok = llm_config_db.save_config(llm_config or {}, source="admin")
+    if not ok:
+        raise RuntimeError("保存 LLM 配置到 MySQL 失败")
+
+
 def _plugins_root_path() -> str:
     """返回插件根目录绝对路径。"""
     return os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..', 'plugins'))
@@ -105,8 +142,7 @@ def _scan_plugin_llm_usage() -> list:
 
 def _build_llm_topology() -> dict:
     """构建 LLM 拓扑视图（供后台页面直观展示依赖关系）。"""
-    config_obj = _load_system_yaml()
-    llm_config = config_obj.get("llm", {}) or {}
+    llm_config = _load_llm_config_runtime()
     scenes = llm_config.get("scenes", {}) or {}
     backends = llm_config.get("backends", {}) or {}
     default_backend = str(llm_config.get("default_backend", "") or "").strip()
@@ -287,12 +323,11 @@ def get_current_user_info():
 @login_required
 def get_system_config_raw():
     try:
-        server = current_app.dashboard_server
         config_path = _system_config_path()
         with open(config_path, 'r', encoding='utf-8') as f:
             config_text = f.read()
-        robot_config = getattr(getattr(server, "robot", None), "config", None)
-        llm_config = getattr(robot_config, "llm", {}) if robot_config else {}
+        # 这里展示“运行时有效”的 LLM 后端列表（优先 MySQL），避免与 YAML 展示不一致。
+        llm_config = _load_llm_config_runtime()
         llm_backends = (llm_config or {}).get("backends", {})
         return jsonify({
             "success": True,
@@ -333,8 +368,7 @@ def update_system_config():
 @login_required
 def get_system_llm_config():
     try:
-        config_obj = _load_system_yaml()
-        llm_config = config_obj.get("llm", {}) or {}
+        llm_config = _load_llm_config_runtime()
         backends = llm_config.get("backends", {}) or {}
         scenes = llm_config.get("scenes", {}) or {}
         backend_list = []
@@ -368,7 +402,8 @@ def get_system_llm_config():
                 "scenes": scene_list,
                 "topology_rows": topology.get("topology_rows", []),
                 "plugin_usages": topology.get("plugin_usages", []),
-                "config_path": _system_config_path(),
+                # 配置来源改为 MySQL；保留 YAML 路径用于排障与一次性导入核对。
+                "config_path": f"mysql:t_llm_config (fallback yaml: {_system_config_path()})",
             }
         })
     except Exception as e:
@@ -428,13 +463,12 @@ def update_system_llm_config():
                 return jsonify({"success": False, "message": f"场景 {scene_name} 绑定的后端不存在"}), 400
             normalized_scenes[scene_name] = backend_name
 
-        config_obj = _load_system_yaml()
-        config_obj["llm"] = {
+        llm_config = {
             "default_backend": default_backend,
             "backends": normalized_backends,
             "scenes": normalized_scenes,
         }
-        _save_system_yaml(config_obj)
+        _save_llm_config_runtime(llm_config)
 
         if getattr(server, "robot", None) and getattr(server.robot, "config", None):
             server.robot.config.reload()

admin/dashboard/server.py

@@ -51,6 +51,7 @@ class DashboardServer:
             self.plugin_schedule_db = robot_instance.plugin_schedule_db
             self.plugin_schedule_manager = robot_instance.plugin_schedule_manager
             self.group_plugin_config_db = robot_instance.group_plugin_config_db
+            self.llm_config_db = robot_instance.llm_config_db
             self.group_plugin_config_service = robot_instance.group_plugin_config_service
             # 获取联系人管理器实例
             self.contact_manager = robot_instance.contact_manager