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|
package pods
import (
"context"
"fmt"
"io"
"os"
"strings"
"text/tabwriter"
"text/template"
"time"
"github.com/containers/libpod/cmd/podman/registry"
"github.com/containers/libpod/pkg/domain/entities"
"github.com/docker/go-units"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
var (
psDescription = "List all pods on system including their names, ids and current state."
// Command: podman pod _ps_
psCmd = &cobra.Command{
Use: "ps",
Aliases: []string{"ls", "list"},
Short: "list pods",
Long: psDescription,
RunE: pods,
}
)
var (
defaultHeaders string = "POD ID\tNAME\tSTATUS\tCREATED"
inputFilters string
noTrunc bool
psInput entities.PodPSOptions
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: psCmd,
Parent: podCmd,
})
flags := psCmd.Flags()
flags.BoolVar(&psInput.CtrNames, "ctr-names", false, "Display the container names")
flags.BoolVar(&psInput.CtrIds, "ctr-ids", false, "Display the container UUIDs. If no-trunc is not set they will be truncated")
flags.BoolVar(&psInput.CtrStatus, "ctr-status", false, "Display the container status")
// TODO should we make this a [] ?
flags.StringVarP(&inputFilters, "filter", "f", "", "Filter output based on conditions given")
flags.StringVar(&psInput.Format, "format", "", "Pretty-print pods to JSON or using a Go template")
flags.BoolVarP(&psInput.Latest, "latest", "l", false, "Act on the latest pod podman is aware of")
flags.BoolVar(&psInput.Namespace, "namespace", false, "Display namespace information of the pod")
flags.BoolVar(&psInput.Namespace, "ns", false, "Display namespace information of the pod")
flags.BoolVar(&noTrunc, "no-trunc", false, "Do not truncate pod and container IDs")
flags.BoolVarP(&psInput.Quiet, "quiet", "q", false, "Print the numeric IDs of the pods only")
flags.StringVar(&psInput.Sort, "sort", "created", "Sort output by created, id, name, or number")
if registry.IsRemote() {
_ = flags.MarkHidden("latest")
}
}
func pods(cmd *cobra.Command, args []string) error {
var (
w io.Writer = os.Stdout
row string
lpr []ListPodReporter
)
if cmd.Flag("filter").Changed {
for _, f := range strings.Split(inputFilters, ",") {
split := strings.Split(f, "=")
if len(split) < 2 {
return errors.Errorf("filter input must be in the form of filter=value: %s is invalid", f)
}
psInput.Filters[split[0]] = append(psInput.Filters[split[0]], split[1])
}
}
responses, err := registry.ContainerEngine().PodPs(context.Background(), psInput)
if err != nil {
return err
}
if psInput.Format == "json" {
b, err := json.MarshalIndent(responses, "", " ")
if err != nil {
return err
}
fmt.Println(string(b))
return nil
}
for _, r := range responses {
lpr = append(lpr, ListPodReporter{r})
}
headers, row := createPodPsOut()
if psInput.Quiet {
if noTrunc {
row = "{{.Id}}\n"
} else {
row = "{{slice .Id 0 12}}\n"
}
}
if cmd.Flag("format").Changed {
row = psInput.Format
if !strings.HasPrefix(row, "\n") {
row += "\n"
}
}
format := "{{range . }}" + row + "{{end}}"
if !psInput.Quiet && !cmd.Flag("format").Changed {
format = headers + format
}
tmpl, err := template.New("listPods").Parse(format)
if err != nil {
return err
}
if !psInput.Quiet {
w = tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0)
}
if err := tmpl.Execute(w, lpr); err != nil {
return err
}
if flusher, ok := w.(interface{ Flush() error }); ok {
return flusher.Flush()
}
return nil
}
func createPodPsOut() (string, string) {
var row string
headers := defaultHeaders
if noTrunc {
row += "{{.Id}}"
} else {
row += "{{slice .Id 0 12}}"
}
row += "\t{{.Name}}\t{{.Status}}\t{{.Created}}"
if psInput.CtrIds {
headers += "\tIDS"
row += "\t{{.ContainerIds}}"
}
if psInput.CtrNames {
headers += "\tNAMES"
row += "\t{{.ContainerNames}}"
}
if psInput.CtrStatus {
headers += "\tSTATUS"
row += "\t{{.ContainerStatuses}}"
}
if psInput.Namespace {
headers += "\tCGROUP\tNAMESPACES"
row += "\t{{.Cgroup}}\t{{.Namespace}}"
}
if !psInput.CtrStatus && !psInput.CtrNames && !psInput.CtrIds {
headers += "\t# OF CONTAINERS"
row += "\t{{.NumberOfContainers}}"
}
headers += "\tINFRA ID\n"
if noTrunc {
row += "\t{{.InfraId}}\n"
} else {
row += "\t{{slice .InfraId 0 12}}\n"
}
return headers, row
}
// ListPodReporter is a struct for pod ps output
type ListPodReporter struct {
*entities.ListPodsReport
}
// Created returns a human readable created time/date
func (l ListPodReporter) Created() string {
return units.HumanDuration(time.Since(l.ListPodsReport.Created)) + " ago"
}
// NumberofContainers returns an int representation for
// the number of containers belonging to the pod
func (l ListPodReporter) NumberOfContainers() int {
return len(l.Containers)
}
// Added for backwards compatibility with podmanv1
func (l ListPodReporter) InfraID() string {
return l.InfraId()
}
// InfraId returns the infra container id for the pod
// depending on trunc
func (l ListPodReporter) InfraId() string {
if noTrunc {
return l.ListPodsReport.InfraId
}
return l.ListPodsReport.InfraId[0:12]
}
func (l ListPodReporter) ContainerIds() string {
var ctrids []string
for _, c := range l.Containers {
id := c.Id
if !noTrunc {
id = id[0:12]
}
ctrids = append(ctrids, id)
}
return strings.Join(ctrids, ",")
}
func (l ListPodReporter) ContainerNames() string {
var ctrNames []string
for _, c := range l.Containers {
ctrNames = append(ctrNames, c.Names)
}
return strings.Join(ctrNames, ",")
}
func (l ListPodReporter) ContainerStatuses() string {
var statuses []string
for _, c := range l.Containers {
statuses = append(statuses, c.Status)
}
return strings.Join(statuses, ",")
}
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