package main import ( "fmt" "os" "strings" "text/tabwriter" "github.com/containers/libpod/cmd/podman/cliconfig" "github.com/containers/libpod/pkg/adapter" "github.com/containers/libpod/pkg/util" "github.com/pkg/errors" "github.com/spf13/cobra" ) func getDescriptorString() string { descriptors, err := util.GetContainerPidInformationDescriptors() if err == nil { return fmt.Sprintf(` Format Descriptors: %s`, strings.Join(descriptors, ",")) } return "" } var ( topCommand cliconfig.TopValues topDescription = fmt.Sprintf(`Similar to system "top" command. Specify format descriptors to alter the output. Running "podman top -l pid pcpu seccomp" will print the process ID, the CPU percentage and the seccomp mode of each process of the latest container. %s`, getDescriptorString()) _topCommand = &cobra.Command{ Use: "top [flags] CONTAINER [FORMAT-DESCRIPTORS|ARGS]", Short: "Display the running processes of a container", Long: topDescription, RunE: func(cmd *cobra.Command, args []string) error { topCommand.InputArgs = args topCommand.GlobalFlags = MainGlobalOpts topCommand.Remote = remoteclient return topCmd(&topCommand) }, Args: cobra.ArbitraryArgs, Example: `podman top ctrID podman top --latest podman top ctrID pid seccomp args %C podman top ctrID -eo user,pid,comm`, } ) func init() { topCommand.Command = _topCommand topCommand.SetHelpTemplate(HelpTemplate()) topCommand.SetUsageTemplate(UsageTemplate()) flags := topCommand.Flags() flags.SetInterspersed(false) flags.BoolVar(&topCommand.ListDescriptors, "list-descriptors", false, "") flags.MarkHidden("list-descriptors") flags.BoolVarP(&topCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of") markFlagHiddenForRemoteClient("latest", flags) } func topCmd(c *cliconfig.TopValues) error { var err error args := c.InputArgs if c.ListDescriptors { descriptors, err := util.GetContainerPidInformationDescriptors() if err != nil { return err } fmt.Println(strings.Join(descriptors, "\n")) return nil } if len(args) < 1 && !c.Latest { return errors.Errorf("you must provide the name or id of a running container") } runtime, err := adapter.GetRuntime(getContext(), &c.PodmanCommand) if err != nil { return errors.Wrapf(err, "error creating libpod runtime") } defer runtime.Shutdown(false) psOutput, err := runtime.Top(c) if err != nil { return err } w := tabwriter.NewWriter(os.Stdout, 5, 1, 3, ' ', 0) for _, proc := range psOutput { fmt.Fprintln(w, proc) } w.Flush() return nil }