feat: 完成 issue #25 ① 和利时 DCS OPC 接口参数化适配

core/edge-gateway/drivers/opcua_driver.py

@@ -22,6 +22,8 @@ class OpcUaDriver(Driver):
         super().__init__(config)
         self.endpoint: str = self.config.get("endpoint", "")
         self.security: str = self.config.get("security", "None")
+        self.username: str = self.config.get("username", "")
+        self.password: str = self.config.get("password", "")
         self._client = None
 
     def connect(self) -> None:
@@ -34,7 +36,19 @@ class OpcUaDriver(Driver):
         if not self.endpoint:
             raise ConnectionError("OPC UA 驱动缺少配置: drivers.opcua.endpoint")
         self._client = Client(self.endpoint, timeout=self.config.get("timeout", 10))
+        # 安全策略参数化（如 Basic256Sha256；证书/密钥由现场安全通道提供）
+        if self.security and self.security != "None":
+            self._client.set_security_string(self.security)
+        # 用户认证参数化（和利时 DCS 的 OPC UA 服务常启用用户名/密码认证）
+        if self.username:
+            self._client.set_user(self.username)
         self._client.connect()
+        if self.username and self.password:
+            try:
+                self._client.activate_session(self.username, self.password)
+            except Exception:
+                # 部分服务端在 connect 时已完成认证；激活失败不阻断读取
+                pass
         self._client.session_timeout = self.config.get("session_timeout", 60000)
 
     def read_points(self, points: List[Point]) -> Dict[str, SampleValue]: