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synced 2022-11-09 12:21:53 -05:00
46 lines
1 KiB
Go
46 lines
1 KiB
Go
package client
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import (
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"encoding/json"
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"fmt"
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"net/url"
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"strings"
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"text/tabwriter"
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"github.com/docker/docker/api/types"
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flag "github.com/docker/docker/pkg/mflag"
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)
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// CmdTop displays the running processes of a container.
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//
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// Usage: docker top CONTAINER
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func (cli *DockerCli) CmdTop(args ...string) error {
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cmd := cli.Subcmd("top", []string{"CONTAINER [ps OPTIONS]"}, "Display the running processes of a container", true)
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cmd.Require(flag.Min, 1)
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cmd.ParseFlags(args, true)
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val := url.Values{}
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if cmd.NArg() > 1 {
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val.Set("ps_args", strings.Join(cmd.Args()[1:], " "))
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}
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stream, _, _, err := cli.call("GET", "/containers/"+cmd.Arg(0)+"/top?"+val.Encode(), nil, nil)
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if err != nil {
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return err
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}
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procList := types.ContainerProcessList{}
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if err := json.NewDecoder(stream).Decode(&procList); err != nil {
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return err
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}
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w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
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fmt.Fprintln(w, strings.Join(procList.Titles, "\t"))
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for _, proc := range procList.Processes {
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fmt.Fprintln(w, strings.Join(proc, "\t"))
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}
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w.Flush()
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return nil
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}
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