return &NodePodCIDRHandler{
		podCIDRs: podCIDRs,
		logger:   klog.FromContext(ctx),
	}
}

var _ config.NodeHandler = &NodePodCIDRHandler{}

// OnNodeAdd is a handler for Node creates.
func (n *NodePodCIDRHandler) OnNodeAdd(node *v1.Node) {
	n.mu.Lock()
	defer n.mu.Unlock()

	podCIDRs := node.Spec.PodCIDRs
	// initialize podCIDRs
	if len(n.podCIDRs) == 0 && len(podCIDRs) > 0 {

	proxier.ipv4Proxier.OnEndpointSlicesSynced()
	proxier.ipv6Proxier.OnEndpointSlicesSynced()
}

// OnNodeAdd is called whenever creation of new node object is observed.
func (proxier *metaProxier) OnNodeAdd(node *v1.Node) {
	proxier.ipv4Proxier.OnNodeAdd(node)
	proxier.ipv6Proxier.OnNodeAdd(node)
}

// OnNodeUpdate is called whenever modification of an existing
// node object is observed.

	}
}

// NodeHandler is an abstract interface of objects which receive
// notifications about node object changes.
type NodeHandler interface {
	// OnNodeAdd is called whenever creation of new node object
	// is observed.
	OnNodeAdd(node *v1.Node)
	// OnNodeUpdate is called whenever modification of an existing
	// node object is observed.
	OnNodeUpdate(oldNode, node *v1.Node)

				r := recover()
				if r == nil && tt.expectPanic {
					t.Errorf("The code did not panic")
				} else if r != nil && !tt.expectPanic {
					t.Errorf("The code did panic")
				}
			}()

			n.OnNodeAdd(node)
		})
	}
}

func TestNodePodCIDRHandlerUpdate(t *testing.T) {
	oldKlogOsExit := klog.OsExit
	defer func() {
		klog.OsExit = oldKlogOsExit
	}()
	klog.OsExit = customExit

	tests := []struct {

	proxier.mu.Unlock()

	// Sync unconditionally - this is called once per lifetime.
	proxier.syncProxyRules()
}

// OnNodeAdd is called whenever creation of new node object
// is observed.
func (proxier *Proxier) OnNodeAdd(node *v1.Node) {
	if node.Name != proxier.hostname {
		proxier.logger.Error(nil, "Received a watch event for a node that doesn't match the current node",

	proxier.mu.Unlock()

	// Sync unconditionally - this is called once per lifetime.
	proxier.syncProxyRules()
}

// OnNodeAdd is called whenever creation of new node object
// is observed.
func (proxier *Proxier) OnNodeAdd(node *v1.Node) {
	if node.Name != proxier.hostname {
		proxier.logger.Error(nil, "Received a watch event for a node that doesn't match the current node",

	proxier.mu.Unlock()

	// Sync unconditionally - this is called once per lifetime.
	proxier.syncProxyRules()
}

// OnNodeAdd is called whenever creation of new node object
// is observed.
func (proxier *Proxier) OnNodeAdd(node *v1.Node) {
	if node.Name != proxier.hostname {