def usb_mount_point_manager_cb()

in usb_monitor_pkg/usb_monitor_pkg/usb_monitor_node.py [0:0]

• 17 lines of code
• 4 McCabe index (conditional complexity)

    def usb_mount_point_manager_cb(self, req, res):
        """Callback for the usb_mount_point_manager service. Executes increment/decrement
           actions for the mount point node name passed.

        Args:
            req (USBMountPointManagerSrv.Request): Request object with node_name(str)
                                                   identifying the mount point and the
                                                   action(int) flag.
            res (USBMountPointManagerSrv.Response): Response object with error(int) flag
                                                    to indicate if the service call was
                                                    successful.

        Returns:
            USBMountPointManagerSrv.Response: Response object with error(int) flag to
                                              indicate if the service call was successful.
        """
        node_name = req.node_name
        action = req.action
        res.error = 0
        self.get_logger().info(f"USB mount point manager callback: {node_name} {action}")
        if node_name in self.mount_point_map:
            if action == 0:
                self.mount_point_map[node_name].ref_dec()
            elif action == 1:
                self.mount_point_map[node_name].ref_inc()
            else:
                res.error = 1
                self.get_logger().error(f"Incorrect action value: {action}")
        else:
            res.error = 1
            self.get_logger().error(f"Node name not found: {node_name}")
        return res