Function Remove

pkg/cmd/network/remove.go:31–90

(ctx context.Context, client *containerd.Client, options types.NetworkRemoveOptions)

)

func Remove(ctx context.Context, client *containerd.Client, options types.NetworkRemoveOptions) error {
	cniEnv, err := netutil.NewCNIEnv(options.GOptions.CNIPath, options.GOptions.CNINetConfPath, netutil.WithNamespace(options.GOptions.Namespace))
	if err != nil {
		return err
	}

	usedNetworkInfo, err := netutil.UsedNetworks(ctx, client)
	if err != nil {
		return err
	}

	var result []string
	netLists, errs := cniEnv.ListNetworksMatch(options.Networks, false)

	for req, netList := range netLists {
		if len(netList) > 1 {
			errs = append(errs, fmt.Errorf("multiple IDs found with provided prefix: %s", req))
			continue
		}
		if len(netList) == 0 {
			errs = append(errs, fmt.Errorf("no network found matching: %s", req))
			continue
		}
		network := netList[0]
		if value, ok := usedNetworkInfo[network.Name]; ok {
			errs = append(errs, fmt.Errorf("network %q is in use by container %q", req, value))
			continue
		}
		if network.Name == "bridge" {
			errs = append(errs, errors.New("cannot remove pre-defined network bridge"))
			continue
		}
		if network.File == "" {
			errs = append(errs, fmt.Errorf("%s is a pre-defined network and cannot be removed", req))
			continue
		}
		if network.NerdctlID == nil {
			errs = append(errs, fmt.Errorf("%s is managed outside nerdctl and cannot be removed", req))
			continue
		}
		if err := cniEnv.RemoveNetwork(network); err != nil {
			errs = append(errs, err)
		} else {
			result = append(result, req)
		}
	}
	for _, unErr := range errs {
		log.G(ctx).Error(unErr)
	}
	if len(result) > 0 {
		for _, id := range result {
			fmt.Fprintln(options.Stdout, id)
		}
		err = nil
	} else {
		err = errors.New("no network could be removed")
	}