func()

in cmd/core_plugin/network/netplan/netplan_linux.go [310:347]

• 27 lines of code
• 10 McCabe index (conditional complexity)

func (sn *serviceNetplan) Rollback(ctx context.Context, opts *service.Options) error {
	galog.Infof("Rolling back changes for netplan.")

	// Rollback the backend's drop-in files.
	for _, backend := range backends {
		if err := backend.RollbackDropins(opts.NICConfigs, backendDropinPrefix); err != nil {
			return err
		}
	}

	// Remove the netplan drop-in file.
	if file.Exists(sn.ethernetDropinFile(), file.TypeFile) {
		if err := os.Remove(sn.ethernetDropinFile()); err != nil {
			return fmt.Errorf("error removing netplan dropin: %w", err)
		}
	}

	// Remove the netplan vlan drop-in file.
	vlanDropin := sn.vlanDropinFile()
	if file.Exists(vlanDropin, file.TypeFile) {
		if err := os.Remove(vlanDropin); err != nil {
			return fmt.Errorf("error removing netplan vlan dropin: %w", err)
		}
	}

	// Remove the routes managed by us using the "native" implementation if the
	// running system's netplan doesn't support local routes.
	if !sn.dropinRoutes {
		// Remove the routes managed by us.
		for _, nic := range opts.NICConfigs {
			if err := route.RemoveRoutes(ctx, nic.Interface.Name()); err != nil {
				return fmt.Errorf("failed to remove native routes managed by netplan manager: %w", err)
			}
		}
	}

	return nil
}