mirror of https://github.com/docker/cli.git
58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package container
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import (
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"fmt"
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"strings"
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"text/tabwriter"
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"github.com/docker/docker/cli"
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"github.com/docker/docker/cli/command"
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"github.com/spf13/cobra"
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"golang.org/x/net/context"
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)
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type topOptions struct {
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container string
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args []string
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}
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// NewTopCommand creates a new cobra.Command for `docker top`
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func NewTopCommand(dockerCli *command.DockerCli) *cobra.Command {
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var opts topOptions
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cmd := &cobra.Command{
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Use: "top CONTAINER [ps OPTIONS]",
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Short: "Display the running processes of a container",
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Args: cli.RequiresMinArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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opts.container = args[0]
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opts.args = args[1:]
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return runTop(dockerCli, &opts)
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},
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}
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flags := cmd.Flags()
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flags.SetInterspersed(false)
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return cmd
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}
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func runTop(dockerCli *command.DockerCli, opts *topOptions) error {
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ctx := context.Background()
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procList, err := dockerCli.Client().ContainerTop(ctx, opts.container, opts.args)
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if err != nil {
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return err
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}
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w := tabwriter.NewWriter(dockerCli.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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