100 lines
2.6 KiB
Go
100 lines
2.6 KiB
Go
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, "")
|
|
markFlagHidden(flags, "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.DeferredShutdown(false)
|
|
|
|
psOutput, err := runtime.Top(c)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
w := tabwriter.NewWriter(os.Stdout, 5, 1, 3, ' ', 0)
|
|
for _, proc := range psOutput {
|
|
if _, err := fmt.Fprintln(w, proc); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return w.Flush()
|
|
}
|