restore

type FileSystem interface {
	TempDir(dir, prefix string) (string, error)
	MkdirAll(path string, perm os.FileMode) error
	Create(name string) (io.WriteCloser, error)
	RemoveAll(path string) error
	ReadDir(dirname string) ([]os.FileInfo, error)
	ReadFile(filename string) ([]byte, error)
	DirExists(path string) (bool, error)
}

type ItemAction interface {
	// AppliesTo returns information about which resources this action should be invoked for.
	// An ItemAction's Execute function will only be invoked on items that match the returned
	// selector. A zero-valued ResourceSelector matches all resources.
	AppliesTo() (ResourceSelector, error)

	// Execute allows the ItemAction to perform arbitrary logic with the item being restored,
	// including mutating the item itself prior to restore. The item (unmodified or modified)
	// should be returned, along with a warning (which will be logged but will not prevent
	// the item from being restored) or error (which will be logged and will prevent the item
	// from being restored) if applicable.
	Execute(obj runtime.Unstructured, restore *api.Restore) (res runtime.Unstructured, warning error, err error)
}

type ResourceSelector struct {
	// IncludedNamespaces is a slice of namespace names to match. All
	// namespaces in this slice, except those in ExcludedNamespaces,
	// will be matched. A nil/empty slice matches all namespaces.
	IncludedNamespaces []string
	// ExcludedNamespaces is a slice of namespace names to exclude.
	// All namespaces in IncludedNamespaces, *except* those in
	// this slice, will be matched.
	ExcludedNamespaces []string
	// IncludedResources is a slice of resources to match. Resources
	// may be specified as full names (e.g. "services") or abbreviations
	// (e.g. "svc"). All resources in this slice, except those in
	// ExcludedResources, will be matched. A nil/empty slice matches
	// all resources.
	IncludedResources []string
	// ExcludedResources is a slice of resources to exclude.
	// Resources may be specified as full names (e.g. "services") or
	// abbreviations (e.g. "svc"). All resources in IncludedResources,
	// *except* those in this slice, will be matched.
	ExcludedResources []string
	// LabelSelector is a string representation of a selector to apply
	// when matching resources. See "k8s.io/apimachinery/pkg/labels".Parse()
	// for details on syntax.
	LabelSelector string
}

type Restorer interface {
	// Restore restores the backup data from backupReader, returning warnings and errors.
	Restore(restore *api.Restore, backup *api.Backup, backupReader io.Reader, logFile io.Writer, actions []ItemAction) (api.RestoreResult, api.RestoreResult)
}