Function WithTaskCheckpoint

client/task_opts.go:74–95

WithTaskCheckpoint allows a task to be created with live runtime and memory data from a previous checkpoint. Additional software such as CRIU may be required to restore a task from a checkpoint

(im Image)

// previous checkpoint. Additional software such as CRIU may be required to
// restore a task from a checkpoint
func WithTaskCheckpoint(im Image) NewTaskOpts {
	return func(ctx context.Context, c *Client, info *TaskInfo) error {
		desc := im.Target()
		id := desc.Digest
		index, err := decodeIndex(ctx, c.ContentStore(), desc)
		if err != nil {
			return err
		}
		for _, m := range index.Manifests {
			if m.MediaType == images.MediaTypeContainerd1Checkpoint {
				info.Checkpoint = &types.Descriptor{
					MediaType:   m.MediaType,
					Size:        m.Size,
					Digest:      m.Digest.String(),
					Annotations: m.Annotations,
				}
				return nil
			}
		}
		return fmt.Errorf("checkpoint not found in index %s", id)
	}
}

// WithCheckpointName sets the image name for the checkpoint
func WithCheckpointName(name string) CheckpointTaskOpts {