kubernetes/staging/src/k8s.io/kubectl/pkg/drain/cordon.go

type CordonHelper …

// NewCordonHelper returns a new CordonHelper
func NewCordonHelper(node *corev1.Node) *CordonHelper { … }

// NewCordonHelperFromRuntimeObject returns a new CordonHelper, or an error if given object is not a
// node or cannot be encoded as JSON
func NewCordonHelperFromRuntimeObject(nodeObject runtime.Object, scheme *runtime.Scheme, gvk schema.GroupVersionKind) (*CordonHelper, error) { … }

// UpdateIfRequired returns true if c.node.Spec.Unschedulable isn't already set,
// or false when no change is needed
func (c *CordonHelper) UpdateIfRequired(desired bool) bool { … }

// PatchOrReplace uses given clientset to update the node status, either by patching or
// updating the given node object; it may return error if the object cannot be encoded as
// JSON, or if either patch or update calls fail; it will also return a second error
// whenever creating a patch has failed
func (c *CordonHelper) PatchOrReplace(clientset kubernetes.Interface, serverDryRun bool) (error, error) { … }

// PatchOrReplaceWithContext provides the option to pass a custom context while updating
// the node status
func (c *CordonHelper) PatchOrReplaceWithContext(clientCtx context.Context, clientset kubernetes.Interface, serverDryRun bool) (error, error) { … }