55 lines
1.1 KiB
Go
55 lines
1.1 KiB
Go
package main
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import (
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"fmt"
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"github.com/containerd/containerd"
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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 checkpointCommand = cli.Command{
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Name: "checkpoint",
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Usage: "checkpoint a container",
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ArgsUsage: "CONTAINER",
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "exit",
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Usage: "stop the container after the checkpoint",
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},
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},
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Action: func(context *cli.Context) error {
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var (
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ctx, cancel = appContext(context)
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id = context.Args().First()
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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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var opts []containerd.CheckpointTaskOpts
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if context.Bool("exit") {
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opts = append(opts, containerd.WithExit)
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}
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checkpoint, err := task.Checkpoint(ctx, opts...)
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if err != nil {
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return err
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}
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fmt.Println(checkpoint.Digest.String())
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return nil
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},
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}
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