137 lines
3.5 KiB
Go
137 lines
3.5 KiB
Go
package network
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
"text/tabwriter"
|
|
"text/template"
|
|
|
|
"github.com/containers/common/pkg/report"
|
|
"github.com/containers/podman/v2/cmd/podman/parse"
|
|
"github.com/containers/podman/v2/cmd/podman/registry"
|
|
"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/spf13/cobra"
|
|
"github.com/spf13/pflag"
|
|
)
|
|
|
|
var (
|
|
networklistDescription = `List networks`
|
|
networklistCommand = &cobra.Command{
|
|
Use: "ls [options]",
|
|
Args: validate.NoArgs,
|
|
Short: "network list",
|
|
Long: networklistDescription,
|
|
RunE: networkList,
|
|
Example: `podman network list`,
|
|
}
|
|
)
|
|
|
|
var (
|
|
networkListOptions entities.NetworkListOptions
|
|
)
|
|
|
|
func networkListFlags(flags *pflag.FlagSet) {
|
|
// TODO enable filters based on something
|
|
// flags.StringSliceVarP(&networklistCommand.Filter, "filter", "f", []string{}, "Pause all running containers")
|
|
flags.StringVarP(&networkListOptions.Format, "format", "f", "", "Pretty-print networks to JSON or using a Go template")
|
|
flags.BoolVarP(&networkListOptions.Quiet, "quiet", "q", false, "display only names")
|
|
flags.StringVarP(&networkListOptions.Filter, "filter", "", "", "Provide filter values (e.g. 'name=podman')")
|
|
}
|
|
|
|
func init() {
|
|
registry.Commands = append(registry.Commands, registry.CliCommand{
|
|
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
|
|
Command: networklistCommand,
|
|
Parent: networkCmd,
|
|
})
|
|
flags := networklistCommand.Flags()
|
|
networkListFlags(flags)
|
|
}
|
|
|
|
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)
|
|
}
|
|
}
|
|
|
|
responses, err := registry.ContainerEngine().NetworkList(registry.Context(), networkListOptions)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
switch {
|
|
case report.IsJSON(networkListOptions.Format):
|
|
return jsonOut(responses)
|
|
case networkListOptions.Quiet:
|
|
// quiet means we only print the network names
|
|
return quietOut(responses)
|
|
}
|
|
|
|
nlprs := make([]ListPrintReports, 0, len(responses))
|
|
for _, r := range responses {
|
|
nlprs = append(nlprs, ListPrintReports{r})
|
|
}
|
|
|
|
headers := report.Headers(ListPrintReports{}, map[string]string{
|
|
"CNIVersion": "version",
|
|
"Plugins": "plugins",
|
|
})
|
|
renderHeaders := true
|
|
row := "{{.Name}}\t{{.Version}}\t{{.Plugins}}\n"
|
|
if cmd.Flags().Changed("format") {
|
|
renderHeaders = parse.HasTable(networkListOptions.Format)
|
|
row = report.NormalizeFormat(networkListOptions.Format)
|
|
}
|
|
format := parse.EnforceRange(row)
|
|
|
|
tmpl, err := template.New("listNetworks").Parse(format)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
w := tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0)
|
|
defer w.Flush()
|
|
|
|
if renderHeaders {
|
|
if err := tmpl.Execute(w, headers); err != nil {
|
|
return err
|
|
}
|
|
|
|
}
|
|
return tmpl.Execute(w, nlprs)
|
|
}
|
|
|
|
func quietOut(responses []*entities.NetworkListReport) error {
|
|
for _, r := range responses {
|
|
fmt.Println(r.Name)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func jsonOut(responses []*entities.NetworkListReport) error {
|
|
b, err := json.MarshalIndent(responses, "", " ")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fmt.Println(string(b))
|
|
return nil
|
|
}
|
|
|
|
type ListPrintReports struct {
|
|
*entities.NetworkListReport
|
|
}
|
|
|
|
func (n ListPrintReports) Version() string {
|
|
return n.CNIVersion
|
|
}
|
|
|
|
func (n ListPrintReports) Plugins() string {
|
|
return network.GetCNIPlugins(n.NetworkConfigList)
|
|
}
|