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moby--moby/api/client/top.go

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package client
import (
"fmt"
"strings"
"text/tabwriter"
Cli "github.com/docker/docker/cli"
flag "github.com/docker/docker/pkg/mflag"
)
// CmdTop displays the running processes of a container.
//
// Usage: docker top CONTAINER
func (cli *DockerCli) CmdTop(args ...string) error {
cmd := Cli.Subcmd("top", []string{"CONTAINER [ps OPTIONS]"}, Cli.DockerCommands["top"].Description, true)
cmd.Require(flag.Min, 1)
cmd.ParseFlags(args, true)
var arguments []string
if cmd.NArg() > 1 {
arguments = cmd.Args()[1:]
}
procList, err := cli.client.ContainerTop(cmd.Arg(0), arguments)
if err != nil {
return err
}
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
fmt.Fprintln(w, strings.Join(procList.Titles, "\t"))
for _, proc := range procList.Processes {
fmt.Fprintln(w, strings.Join(proc, "\t"))
}
w.Flush()
return nil
}