package main import ( "fmt" "os" "strings" "text/tabwriter" "github.com/containers/libpod/cmd/podman/libpodruntime" "github.com/containers/libpod/cmd/podman/shared" "github.com/containers/libpod/libpod" "github.com/pkg/errors" "github.com/urfave/cli" ) var ( podTopFlags = []cli.Flag{ LatestFlag, cli.BoolFlag{ Name: "list-descriptors", Hidden: true, }, } podTopDescription = fmt.Sprintf(`Display the running processes containers in a pod. 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. %s `, getDescriptorString()) podTopCommand = cli.Command{ Name: "top", Usage: "Display the running processes of containers in a pod", Description: podTopDescription, Flags: sortFlags(podTopFlags), Action: podTopCmd, ArgsUsage: "POD-NAME [format descriptors]", SkipArgReorder: true, OnUsageError: usageErrorHandler, } ) func podTopCmd(c *cli.Context) error { var pod *libpod.Pod var err error args := c.Args() if c.Bool("list-descriptors") { descriptors, err := libpod.GetContainerPidInformationDescriptors() if err != nil { return err } fmt.Println(strings.Join(descriptors, "\n")) return nil } if len(args) < 1 && !c.Bool("latest") { return errors.Errorf("you must provide the name or id of a running pod") } if err := validateFlags(c, podTopFlags); err != nil { return err } runtime, err := libpodruntime.GetRuntime(c) if err != nil { return errors.Wrapf(err, "error creating libpod runtime") } defer runtime.Shutdown(false) var descriptors []string if c.Bool("latest") { descriptors = args pod, err = runtime.GetLatestPod() } else { descriptors = args[1:] pod, err = runtime.LookupPod(args[0]) } if err != nil { return errors.Wrapf(err, "unable to lookup requested container") } podStatus, err := shared.GetPodStatus(pod) if err != nil { return err } if podStatus != "Running" { return errors.Errorf("pod top can only be used on pods with at least one running container") } psOutput, err := pod.GetPodPidInformation(descriptors) 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 }