package pods import ( "context" "fmt" "os" "strings" "text/tabwriter" "github.com/containers/podman/v2/cmd/podman/common" "github.com/containers/podman/v2/cmd/podman/registry" "github.com/containers/podman/v2/cmd/podman/validate" "github.com/containers/podman/v2/pkg/domain/entities" "github.com/containers/podman/v2/pkg/util" "github.com/pkg/errors" "github.com/spf13/cobra" ) var ( topDescription = `Specify format descriptors to alter the output. You may run "podman pod top -l pid pcpu seccomp" to print the process ID, the CPU percentage and the seccomp mode of each process of the latest pod.` topOptions = entities.PodTopOptions{} topCommand = &cobra.Command{ Use: "top [options] POD [FORMAT-DESCRIPTORS|ARGS...]", Short: "Display the running processes of containers in a pod", Long: topDescription, RunE: top, Args: cobra.ArbitraryArgs, ValidArgsFunction: common.AutocompleteTopCmd, Example: `podman pod top podID podman pod top --latest podman pod top podID pid seccomp args %C podman pod top podID -eo user,pid,comm`, } ) func init() { registry.Commands = append(registry.Commands, registry.CliCommand{ Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode}, Command: topCommand, Parent: podCmd, }) descriptors, err := util.GetContainerPidInformationDescriptors() if err == nil { topDescription = fmt.Sprintf("%s\n\n Format Descriptors:\n %s", topDescription, strings.Join(descriptors, ",")) topCommand.Long = topDescription } flags := topCommand.Flags() flags.SetInterspersed(false) flags.BoolVar(&topOptions.ListDescriptors, "list-descriptors", false, "") _ = flags.MarkHidden("list-descriptors") // meant only for bash completion validate.AddLatestFlag(topCommand, &topOptions.Latest) } func top(_ *cobra.Command, args []string) error { if topOptions.ListDescriptors { descriptors, err := util.GetContainerPidInformationDescriptors() if err != nil { return err } fmt.Println(strings.Join(descriptors, "\n")) return nil } if len(args) < 1 && !topOptions.Latest { return errors.Errorf("you must provide the name or id of a running pod") } if topOptions.Latest { topOptions.Descriptors = args } else { topOptions.NameOrID = args[0] topOptions.Descriptors = args[1:] } topResponse, err := registry.ContainerEngine().PodTop(context.Background(), topOptions) if err != nil { return err } w := tabwriter.NewWriter(os.Stdout, 5, 1, 3, ' ', 0) for _, proc := range topResponse.Value { if _, err := fmt.Fprintln(w, proc); err != nil { return err } } return w.Flush() }