From 8494bcb866f1c0978cbe35c62c1e3312a91040b4 Mon Sep 17 00:00:00 2001 From: Paul Holzinger Date: Fri, 27 Nov 2020 18:02:27 +0100 Subject: podman network label support Add label support for podman network create. Use the `args` field in the cni config file to store the podman labels. Use `podman_labels` as key name and store the labels as map[string]string. For reference: https://github.com/containernetworking/cni/blob/master/CONVENTIONS.md#args-in-network-config https://github.com/containernetworking/cni/blob/spec-v0.4.0/SPEC.md#network-configuration Example snippet: ``` ... "args": { "podman_labels": { "key1":"value1", "key2":"value2" } } ... ``` Make podman network list support several filters. Supported filters are name, plugin, driver and label. Filters with different keys work exclusive. Several label filters work exclusive and the other filter keys are working inclusive. Also adjust the compat api to support labels in network create and list. Breaking changes: - podman network ls -f shortform is used for --filter instead --format This matches docker and other podman commands (container ps, volume ps) - libpod network list endpoint filter parameter is removed. Instead the filters paramter should be used as json encoded map[string][]string. Signed-off-by: Paul Holzinger --- cmd/podman/networks/create.go | 12 ++++++++++++ cmd/podman/networks/list.go | 27 +++++++++++++++++++-------- 2 files changed, 31 insertions(+), 8 deletions(-) (limited to 'cmd/podman') diff --git a/cmd/podman/networks/create.go b/cmd/podman/networks/create.go index 17de2c95d..938b8da77 100644 --- a/cmd/podman/networks/create.go +++ b/cmd/podman/networks/create.go @@ -6,9 +6,11 @@ import ( "github.com/containers/common/pkg/completion" "github.com/containers/podman/v2/cmd/podman/common" + "github.com/containers/podman/v2/cmd/podman/parse" "github.com/containers/podman/v2/cmd/podman/registry" "github.com/containers/podman/v2/libpod/define" "github.com/containers/podman/v2/pkg/domain/entities" + "github.com/pkg/errors" "github.com/spf13/cobra" ) @@ -27,6 +29,7 @@ var ( var ( networkCreateOptions entities.NetworkCreateOptions + labels []string ) func networkCreateFlags(cmd *cobra.Command) { @@ -50,6 +53,10 @@ func networkCreateFlags(cmd *cobra.Command) { flags.StringVar(&networkCreateOptions.MacVLAN, macvlanFlagName, "", "create a Macvlan connection based on this device") _ = cmd.RegisterFlagCompletionFunc(macvlanFlagName, completion.AutocompleteNone) + labelFlagName := "label" + flags.StringArrayVar(&labels, labelFlagName, nil, "set metadata on a network") + _ = cmd.RegisterFlagCompletionFunc(labelFlagName, completion.AutocompleteNone) + // TODO not supported yet // flags.StringVar(&networkCreateOptions.IPamDriver, "ipam-driver", "", "IP Address Management Driver") @@ -81,6 +88,11 @@ func networkCreate(cmd *cobra.Command, args []string) error { } name = args[0] } + var err error + networkCreateOptions.Labels, err = parse.GetAllLabels([]string{}, labels) + if err != nil { + return errors.Wrap(err, "failed to parse labels") + } response, err := registry.ContainerEngine().NetworkCreate(registry.Context(), name, networkCreateOptions) if err != nil { return err diff --git a/cmd/podman/networks/list.go b/cmd/podman/networks/list.go index dcba3f186..6e6bbb07d 100644 --- a/cmd/podman/networks/list.go +++ b/cmd/podman/networks/list.go @@ -16,6 +16,7 @@ import ( "github.com/containers/podman/v2/cmd/podman/validate" "github.com/containers/podman/v2/libpod/network" "github.com/containers/podman/v2/pkg/domain/entities" + "github.com/pkg/errors" "github.com/spf13/cobra" "github.com/spf13/pflag" ) @@ -35,17 +36,18 @@ var ( var ( networkListOptions entities.NetworkListOptions + filters []string ) func networkListFlags(flags *pflag.FlagSet) { formatFlagName := "format" - flags.StringVarP(&networkListOptions.Format, formatFlagName, "f", "", "Pretty-print networks to JSON or using a Go template") + flags.StringVar(&networkListOptions.Format, formatFlagName, "", "Pretty-print networks to JSON or using a Go template") _ = networklistCommand.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteJSONFormat) flags.BoolVarP(&networkListOptions.Quiet, "quiet", "q", false, "display only names") filterFlagName := "filter" - flags.StringVarP(&networkListOptions.Filter, filterFlagName, "", "", "Provide filter values (e.g. 'name=podman')") + flags.StringArrayVarP(&filters, filterFlagName, "f", nil, "Provide filter values (e.g. 'name=podman')") _ = networklistCommand.RegisterFlagCompletionFunc(filterFlagName, common.AutocompleteNetworkFilters) } @@ -61,14 +63,14 @@ func init() { } func networkList(cmd *cobra.Command, args []string) error { - // validate the filter pattern. - if len(networkListOptions.Filter) > 0 { - tokens := strings.Split(networkListOptions.Filter, "=") - if len(tokens) != 2 { - return fmt.Errorf("invalid filter syntax : %s", networkListOptions.Filter) + networkListOptions.Filters = make(map[string][]string) + for _, f := range filters { + split := strings.SplitN(f, "=", 2) + if len(split) == 1 { + return errors.Errorf("invalid filter %q", f) } + networkListOptions.Filters[split[0]] = append(networkListOptions.Filters[split[0]], split[1]) } - responses, err := registry.ContainerEngine().NetworkList(registry.Context(), networkListOptions) if err != nil { return err @@ -93,6 +95,7 @@ func networkList(cmd *cobra.Command, args []string) error { "CNIVersion": "version", "Version": "version", "Plugins": "plugins", + "Labels": "labels", }) renderHeaders := true row := "{{.Name}}\t{{.Version}}\t{{.Plugins}}\n" @@ -144,3 +147,11 @@ func (n ListPrintReports) Version() string { func (n ListPrintReports) Plugins() string { return network.GetCNIPlugins(n.NetworkConfigList) } + +func (n ListPrintReports) Labels() string { + list := make([]string, 0, len(n.NetworkListReport.Labels)) + for k, v := range n.NetworkListReport.Labels { + list = append(list, k+"="+v) + } + return strings.Join(list, ",") +} -- cgit v1.2.3-54-g00ecf