Function NewSnapshotter

plugins/snapshots/native/native.go:40–57

NewSnapshotter returns a Snapshotter which copies layers on the underlying file system. A metadata file is stored under the root.

(root string)

// NewSnapshotter returns a Snapshotter which copies layers on the underlying
// file system. A metadata file is stored under the root.
func NewSnapshotter(root string) (snapshots.Snapshotter, error) {
	if err := os.MkdirAll(root, 0700); err != nil {
		return nil, err
	}
	ms, err := storage.NewMetaStore(filepath.Join(root, "metadata.db"))
	if err != nil {
		return nil, err
	}

	if err := os.Mkdir(filepath.Join(root, "snapshots"), 0700); err != nil && !os.IsExist(err) {
		return nil, err
	}

	return &snapshotter{
		root: root,
		ms:   ms,
	}, nil
}

// Stat returns the info for an active or committed snapshot by name or
// key.