103 lines
2.3 KiB
Go
103 lines
2.3 KiB
Go
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
|
|
}
|