56 lines
1.0 KiB
Go
56 lines
1.0 KiB
Go
package main
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import (
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"fmt"
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"os"
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"text/tabwriter"
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"github.com/pkg/errors"
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"github.com/urfave/cli"
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)
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var psCommand = cli.Command{
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Name: "ps",
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Usage: "list processes for container",
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ArgsUsage: "CONTAINER",
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Action: func(context *cli.Context) error {
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var (
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id = context.Args().First()
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ctx, cancel = appContext(context)
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)
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defer cancel()
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if id == "" {
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return errors.New("container id must be provided")
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}
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client, err := newClient(context)
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if err != nil {
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return err
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}
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container, err := client.LoadContainer(ctx, id)
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if err != nil {
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return err
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}
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task, err := container.Task(ctx, nil)
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if err != nil {
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return err
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}
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processes, err := task.Processes(ctx)
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if err != nil {
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return err
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}
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w := tabwriter.NewWriter(os.Stdout, 10, 1, 3, ' ', 0)
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fmt.Fprintln(w, "PID")
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for _, ps := range processes {
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if _, err := fmt.Fprintf(w, "%d\n", ps); err != nil {
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return err
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}
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}
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if err := w.Flush(); err != nil {
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return err
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}
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return nil
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},
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}
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