mirror of
https://github.com/containers/podman.git
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25a3923b61
We intend to migrate to the cobra cli from urfave/cli because the project is more well maintained. There are also some technical reasons as well which extend into our remote client work. Signed-off-by: baude <bbaude@redhat.com>
106 lines
2.6 KiB
Go
106 lines
2.6 KiB
Go
package main
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import (
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"fmt"
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"os"
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"strings"
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"text/tabwriter"
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"github.com/containers/libpod/cmd/podman/cliconfig"
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"github.com/containers/libpod/cmd/podman/libpodruntime"
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"github.com/containers/libpod/cmd/podman/shared"
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"github.com/containers/libpod/libpod"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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)
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var (
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podTopCommand cliconfig.PodTopValues
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podTopDescription = fmt.Sprintf(`Display the running processes containers in a pod. Specify format descriptors
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to alter the output. You may run "podman pod top -l pid pcpu seccomp" to print
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the process ID, the CPU percentage and the seccomp mode of each process of
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the latest pod.
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%s
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`, getDescriptorString())
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_podTopCommand = &cobra.Command{
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Use: "top",
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Short: "Display the running processes of containers in a pod",
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Long: podTopDescription,
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RunE: func(cmd *cobra.Command, args []string) error {
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podTopCommand.InputArgs = args
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podTopCommand.GlobalFlags = MainGlobalOpts
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return podTopCmd(&podTopCommand)
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},
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Example: "POD-NAME [format descriptors]",
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}
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)
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func init() {
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podTopCommand.Command = _podTopCommand
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flags := podTopCommand.Flags()
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flags.BoolVarP(&podTopCommand.Latest, "latest,", "l", false, "Act on the latest pod podman is aware of")
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flags.BoolVar(&podTopCommand.ListDescriptors, "list-descriptors", false, "")
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flags.MarkHidden("list-descriptors")
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}
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func podTopCmd(c *cliconfig.PodTopValues) error {
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var pod *libpod.Pod
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var err error
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args := c.InputArgs
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if c.ListDescriptors {
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descriptors, err := libpod.GetContainerPidInformationDescriptors()
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if err != nil {
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return err
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}
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fmt.Println(strings.Join(descriptors, "\n"))
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return nil
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}
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if len(args) < 1 && !c.Latest {
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return errors.Errorf("you must provide the name or id of a running pod")
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}
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runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
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if err != nil {
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return errors.Wrapf(err, "error creating libpod runtime")
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}
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defer runtime.Shutdown(false)
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var descriptors []string
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if c.Latest {
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descriptors = args
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pod, err = runtime.GetLatestPod()
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} else {
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descriptors = args[1:]
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pod, err = runtime.LookupPod(args[0])
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}
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if err != nil {
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return errors.Wrapf(err, "unable to lookup requested container")
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}
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podStatus, err := shared.GetPodStatus(pod)
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if err != nil {
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return err
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}
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if podStatus != "Running" {
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return errors.Errorf("pod top can only be used on pods with at least one running container")
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}
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psOutput, err := pod.GetPodPidInformation(descriptors)
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if err != nil {
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return err
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}
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w := tabwriter.NewWriter(os.Stdout, 5, 1, 3, ' ', 0)
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for _, proc := range psOutput {
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fmt.Fprintln(w, proc)
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}
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w.Flush()
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return nil
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}
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