constellation/operators/constellation-node-operator/controllers/nodeversion_controller_test.go
2023-01-09 12:16:54 +01:00

883 lines
24 KiB
Go

/*
Copyright (c) Edgeless Systems GmbH
SPDX-License-Identifier: AGPL-3.0-only
*/
package controllers
import (
"context"
"errors"
"sync"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/version"
mainconstants "github.com/edgelesssys/constellation/v2/internal/constants"
updatev1alpha1 "github.com/edgelesssys/constellation/v2/operators/constellation-node-operator/v2/api/v1alpha1"
)
func TestAnnotateNodes(t *testing.T) {
testCases := map[string]struct {
getScalingGroupErr error
getNodeImageErr error
patchErr error
node corev1.Node
nodeAfterPatch corev1.Node
wantAnnotated *corev1.Node
}{
"node is not annotated": {
node: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "node-name",
},
Spec: corev1.NodeSpec{ProviderID: "provider-id"},
},
nodeAfterPatch: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "node-name",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
nodeImageAnnotation: "node-image",
},
},
Spec: corev1.NodeSpec{ProviderID: "provider-id"},
},
wantAnnotated: &corev1.Node{
TypeMeta: metav1.TypeMeta{
Kind: "Node",
APIVersion: "v1",
},
ObjectMeta: metav1.ObjectMeta{
Name: "node-name",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
nodeImageAnnotation: "node-image",
},
},
Spec: corev1.NodeSpec{ProviderID: "provider-id"},
},
},
"node is already annotated": {
node: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
nodeImageAnnotation: "node-image",
},
},
Spec: corev1.NodeSpec{ProviderID: "provider-id"},
},
wantAnnotated: &corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
nodeImageAnnotation: "node-image",
},
},
Spec: corev1.NodeSpec{ProviderID: "provider-id"},
},
},
"node is missing providerID": {},
"unable to retrieve scaling group": {
getScalingGroupErr: errors.New("error"),
node: corev1.Node{
Spec: corev1.NodeSpec{ProviderID: "provider-id"},
},
},
"unable to retrieve node image": {
getNodeImageErr: errors.New("error"),
node: corev1.Node{
Spec: corev1.NodeSpec{ProviderID: "provider-id"},
},
},
"unable to patch node annotations": {
patchErr: errors.New("error"),
node: corev1.Node{
Spec: corev1.NodeSpec{ProviderID: "provider-id"},
},
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
reconciler := NodeVersionReconciler{
nodeReplacer: &stubNodeReplacerReader{
nodeImage: "node-image",
scalingGroupID: "scaling-group-id",
scalingGroupIDErr: tc.getScalingGroupErr,
nodeImageErr: tc.getNodeImageErr,
},
Client: &stubReadWriterClient{
stubReaderClient: *newStubReaderClient(t, []runtime.Object{&tc.nodeAfterPatch}, nil, nil),
stubWriterClient: stubWriterClient{
patchErr: tc.patchErr,
},
},
}
annotated, invalid := reconciler.annotateNodes(context.Background(), []corev1.Node{tc.node})
if tc.wantAnnotated == nil {
assert.Len(annotated, 0)
assert.Len(invalid, 1)
return
}
assert.Len(annotated, 1)
assert.Len(invalid, 0)
assert.Equal(*tc.wantAnnotated, annotated[0])
})
}
}
func TestPairDonorsAndHeirs(t *testing.T) {
testCases := map[string]struct {
outdatedNode corev1.Node
mintNode mintNode
wantPair *replacementPair
}{
"nodes have same scaling group": {
outdatedNode: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "outdated-name",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
},
},
},
mintNode: mintNode{
pendingNode: updatev1alpha1.PendingNode{
Spec: updatev1alpha1.PendingNodeSpec{
ScalingGroupID: "scaling-group-id",
},
},
node: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "mint-name",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
},
},
},
},
wantPair: &replacementPair{
donor: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "outdated-name",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
heirAnnotation: "mint-name",
},
},
},
heir: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "mint-name",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
donorAnnotation: "outdated-name",
},
},
},
},
},
"nodes have different scaling groups": {
outdatedNode: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "outdated-name",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-1",
},
},
},
mintNode: mintNode{
pendingNode: updatev1alpha1.PendingNode{
Spec: updatev1alpha1.PendingNodeSpec{
ScalingGroupID: "scaling-group-2",
},
},
node: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "mint-name",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-2",
},
},
},
},
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
reconciler := NodeVersionReconciler{
nodeReplacer: &stubNodeReplacerReader{},
Client: &stubReadWriterClient{
stubReaderClient: *newStubReaderClient(t, []runtime.Object{&tc.outdatedNode, &tc.mintNode.node}, nil, nil),
},
}
nodeImage := updatev1alpha1.NodeVersion{}
pairs := reconciler.pairDonorsAndHeirs(context.Background(), &nodeImage, []corev1.Node{tc.outdatedNode}, []mintNode{tc.mintNode})
if tc.wantPair == nil {
assert.Len(pairs, 0)
return
}
assert.Len(pairs, 1)
assert.Equal(*tc.wantPair, pairs[0])
})
}
}
func TestMatchDonorsAndHeirs(t *testing.T) {
testCases := map[string]struct {
donor, heir corev1.Node
wantPair *replacementPair
}{
"nodes match": {
donor: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "donor",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
heirAnnotation: "heir",
},
},
},
heir: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "heir",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
donorAnnotation: "donor",
},
},
},
wantPair: &replacementPair{
donor: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "donor",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
heirAnnotation: "heir",
},
},
},
heir: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "heir",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
donorAnnotation: "donor",
},
},
},
},
},
"nodes do not match": {
donor: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "donor",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
heirAnnotation: "other-heir",
},
},
},
heir: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "heir",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group-id",
donorAnnotation: "other-donor",
},
},
},
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
reconciler := NodeVersionReconciler{
nodeReplacer: &stubNodeReplacerReader{},
Client: &stubReadWriterClient{
stubReaderClient: *newStubReaderClient(t, []runtime.Object{&tc.donor, &tc.heir}, nil, nil),
},
}
pairs := reconciler.matchDonorsAndHeirs(context.Background(), nil, []corev1.Node{tc.donor}, []corev1.Node{tc.heir})
if tc.wantPair == nil {
assert.Len(pairs, 0)
return
}
assert.Len(pairs, 1)
assert.Equal(*tc.wantPair, pairs[0])
})
}
}
func TestCreateNewNodes(t *testing.T) {
testCases := map[string]struct {
outdatedNodes []corev1.Node
pendingNodes []updatev1alpha1.PendingNode
scalingGroupByID map[string]updatev1alpha1.ScalingGroup
budget int
wantCreateCalls []string
}{
"no outdated nodes": {
scalingGroupByID: map[string]updatev1alpha1.ScalingGroup{
"scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "image",
},
},
},
budget: 1,
},
"single outdated node": {
outdatedNodes: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group",
},
},
},
},
scalingGroupByID: map[string]updatev1alpha1.ScalingGroup{
"scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "image",
},
},
},
budget: 1,
wantCreateCalls: []string{"scaling-group"},
},
"budget larger than needed": {
outdatedNodes: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group",
},
},
},
},
scalingGroupByID: map[string]updatev1alpha1.ScalingGroup{
"scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "image",
},
},
},
budget: 2,
wantCreateCalls: []string{"scaling-group"},
},
"no budget": {
outdatedNodes: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group",
},
},
},
},
scalingGroupByID: map[string]updatev1alpha1.ScalingGroup{
"scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "image",
},
},
},
},
"scaling group image is outdated": {
outdatedNodes: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group",
},
},
},
},
scalingGroupByID: map[string]updatev1alpha1.ScalingGroup{
"scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "outdated-image",
},
},
},
budget: 1,
},
"pending node exists": {
outdatedNodes: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group",
},
},
},
},
pendingNodes: []updatev1alpha1.PendingNode{
{
Spec: updatev1alpha1.PendingNodeSpec{
Goal: updatev1alpha1.NodeGoalJoin,
ScalingGroupID: "scaling-group",
},
},
},
scalingGroupByID: map[string]updatev1alpha1.ScalingGroup{
"scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "image",
},
},
},
budget: 1,
},
"leaving pending node is ignored": {
outdatedNodes: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group",
},
},
},
},
pendingNodes: []updatev1alpha1.PendingNode{
{
Spec: updatev1alpha1.PendingNodeSpec{
Goal: updatev1alpha1.NodeGoalLeave,
ScalingGroupID: "scaling-group",
},
},
},
scalingGroupByID: map[string]updatev1alpha1.ScalingGroup{
"scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "image",
},
},
},
budget: 1,
wantCreateCalls: []string{"scaling-group"},
},
"freshly chosen donor node is skipped": {
outdatedNodes: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group",
heirAnnotation: "heir",
},
},
},
},
scalingGroupByID: map[string]updatev1alpha1.ScalingGroup{
"scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "image",
},
},
},
budget: 1,
},
"scaling group exists without outdated nodes": {
outdatedNodes: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group",
},
},
},
},
scalingGroupByID: map[string]updatev1alpha1.ScalingGroup{
"scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "image",
},
},
"other-scaling-group": {
Spec: updatev1alpha1.ScalingGroupSpec{
GroupID: "other-scaling-group",
},
Status: updatev1alpha1.ScalingGroupStatus{
ImageReference: "image",
},
},
},
budget: 2,
wantCreateCalls: []string{"scaling-group"},
},
"scaling group does not exist": {
outdatedNodes: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "node",
Annotations: map[string]string{
scalingGroupAnnotation: "scaling-group",
},
},
},
},
budget: 1,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
require := require.New(t)
desiredNodeImage := updatev1alpha1.NodeVersion{
Spec: updatev1alpha1.NodeVersionSpec{
ImageReference: "image",
},
}
reconciler := NodeVersionReconciler{
nodeReplacer: &stubNodeReplacerWriter{},
Client: &stubReadWriterClient{
stubReaderClient: *newStubReaderClient(t, []runtime.Object{}, nil, nil),
},
Scheme: getScheme(t),
}
newNodeConfig := newNodeConfig{desiredNodeImage, tc.outdatedNodes, tc.pendingNodes, tc.scalingGroupByID, tc.budget}
err := reconciler.createNewNodes(context.Background(), newNodeConfig)
require.NoError(err)
assert.Equal(tc.wantCreateCalls, reconciler.nodeReplacer.(*stubNodeReplacerWriter).createCalls)
})
}
}
func TestGroupNodes(t *testing.T) {
latestImageReference := "latest-image"
latestK8sComponentsReference := "latest-k8s-components-ref"
scalingGroup := "scaling-group"
wantNodeGroups := nodeGroups{
Outdated: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "outdated",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
mainconstants.NodeKubernetesComponentsAnnotationKey: latestK8sComponentsReference,
nodeImageAnnotation: "old-image",
},
},
},
{
ObjectMeta: metav1.ObjectMeta{
Name: "outdated",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
mainconstants.NodeKubernetesComponentsAnnotationKey: "old-ref",
nodeImageAnnotation: latestImageReference,
},
},
},
},
UpToDate: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "uptodate",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
nodeImageAnnotation: latestImageReference,
mainconstants.NodeKubernetesComponentsAnnotationKey: latestK8sComponentsReference,
},
},
},
},
Donors: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "donor",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
nodeImageAnnotation: "old-image",
mainconstants.NodeKubernetesComponentsAnnotationKey: latestK8sComponentsReference,
heirAnnotation: "heir",
},
},
},
{
ObjectMeta: metav1.ObjectMeta{
Name: "donor",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
nodeImageAnnotation: latestImageReference,
mainconstants.NodeKubernetesComponentsAnnotationKey: "old-ref",
heirAnnotation: "heir",
},
},
},
},
Heirs: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "heir",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
nodeImageAnnotation: latestImageReference,
mainconstants.NodeKubernetesComponentsAnnotationKey: latestK8sComponentsReference,
donorAnnotation: "donor",
},
},
},
},
AwaitingAnnotation: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "awaiting-annotation-missing-components-ref",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
nodeImageAnnotation: latestImageReference,
donorAnnotation: "donor",
},
},
},
{
ObjectMeta: metav1.ObjectMeta{
Name: "awaiting-annotation-missing-image-ref",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
mainconstants.NodeKubernetesComponentsAnnotationKey: latestK8sComponentsReference,
donorAnnotation: "donor",
},
},
},
},
Obsolete: []corev1.Node{
{
ObjectMeta: metav1.ObjectMeta{
Name: "obsolete",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
nodeImageAnnotation: latestImageReference,
mainconstants.NodeKubernetesComponentsAnnotationKey: latestK8sComponentsReference,
obsoleteAnnotation: "true",
},
},
},
},
Mint: []mintNode{
{
node: corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "mint",
Annotations: map[string]string{
scalingGroupAnnotation: scalingGroup,
nodeImageAnnotation: latestImageReference,
mainconstants.NodeKubernetesComponentsAnnotationKey: latestK8sComponentsReference,
},
},
},
pendingNode: updatev1alpha1.PendingNode{
Spec: updatev1alpha1.PendingNodeSpec{
NodeName: "mint",
Goal: updatev1alpha1.NodeGoalJoin,
},
Status: updatev1alpha1.PendingNodeStatus{
CSPNodeState: updatev1alpha1.NodeStateReady,
},
},
},
},
}
nodes := []corev1.Node{}
nodes = append(nodes, wantNodeGroups.Outdated...)
nodes = append(nodes, wantNodeGroups.UpToDate...)
nodes = append(nodes, wantNodeGroups.Donors...)
nodes = append(nodes, wantNodeGroups.Heirs...)
nodes = append(nodes, wantNodeGroups.AwaitingAnnotation...)
nodes = append(nodes, wantNodeGroups.Obsolete...)
nodes = append(nodes, wantNodeGroups.Mint[0].node)
pendingNodes := []updatev1alpha1.PendingNode{
wantNodeGroups.Mint[0].pendingNode,
}
assert := assert.New(t)
groups := groupNodes(nodes, pendingNodes, latestImageReference, latestK8sComponentsReference)
assert.Equal(wantNodeGroups, groups)
}
type stubNodeReplacer struct {
sync.RWMutex
nodeImages map[string]string
scalingGroups map[string]string
createNodeName string
createProviderID string
nodeImageErr error
scalingGroupIDErr error
createErr error
deleteErr error
}
func (r *stubNodeReplacer) GetNodeImage(ctx context.Context, providerID string) (string, error) {
r.RLock()
defer r.RUnlock()
return r.nodeImages[providerID], r.nodeImageErr
}
func (r *stubNodeReplacer) GetScalingGroupID(ctx context.Context, providerID string) (string, error) {
r.RLock()
defer r.RUnlock()
return r.scalingGroups[providerID], r.scalingGroupIDErr
}
func (r *stubNodeReplacer) CreateNode(ctx context.Context, scalingGroupID string) (nodeName, providerID string, err error) {
r.RLock()
defer r.RUnlock()
return r.createNodeName, r.createProviderID, r.createErr
}
func (r *stubNodeReplacer) DeleteNode(ctx context.Context, providerID string) error {
r.RLock()
defer r.RUnlock()
return r.deleteErr
}
// thread safe methods to update the stub while in use
func (r *stubNodeReplacer) setNodeImage(providerID, image string) {
r.Lock()
defer r.Unlock()
if r.nodeImages == nil {
r.nodeImages = make(map[string]string)
}
r.nodeImages[providerID] = image
}
func (r *stubNodeReplacer) setScalingGroupID(providerID, scalingGroupID string) {
r.Lock()
defer r.Unlock()
if r.scalingGroups == nil {
r.scalingGroups = make(map[string]string)
}
r.scalingGroups[providerID] = scalingGroupID
}
func (r *stubNodeReplacer) setCreatedNode(nodeName, providerID string, err error) {
r.Lock()
defer r.Unlock()
r.createNodeName = nodeName
r.createProviderID = providerID
r.createErr = err
}
type stubKubernetesServerVersionGetter struct {
version string
err error
}
func (g *stubKubernetesServerVersionGetter) ServerVersion() (*version.Info, error) {
return &version.Info{GitVersion: g.version}, g.err
}
type stubNodeReplacerReader struct {
nodeImage string
scalingGroupID string
nodeImageErr error
scalingGroupIDErr error
unimplementedNodeReplacer
}
func (r *stubNodeReplacerReader) GetNodeImage(ctx context.Context, providerID string) (string, error) {
return r.nodeImage, r.nodeImageErr
}
func (r *stubNodeReplacerReader) GetScalingGroupID(ctx context.Context, providerID string) (string, error) {
return r.scalingGroupID, r.scalingGroupIDErr
}
type stubNodeReplacerWriter struct {
createNodeName string
createProviderID string
createErr error
deleteErr error
createCalls []string
deleteCalls []string
unimplementedNodeReplacer
}
func (r *stubNodeReplacerWriter) CreateNode(ctx context.Context, scalingGroupID string) (nodeName, providerID string, err error) {
r.createCalls = append(r.createCalls, scalingGroupID)
return r.createNodeName, r.createProviderID, r.createErr
}
func (r *stubNodeReplacerWriter) DeleteNode(ctx context.Context, providerID string) error {
r.deleteCalls = append(r.deleteCalls, providerID)
return r.deleteErr
}
type unimplementedNodeReplacer struct{}
func (*unimplementedNodeReplacer) GetNodeImage(ctx context.Context, providerID string) (string, error) {
panic("unimplemented")
}
func (*unimplementedNodeReplacer) GetScalingGroupID(ctx context.Context, providerID string) (string, error) {
panic("unimplemented")
}
func (*unimplementedNodeReplacer) CreateNode(ctx context.Context, scalingGroupID string) (nodeName, providerID string, err error) {
panic("unimplemented")
}
func (*unimplementedNodeReplacer) DeleteNode(ctx context.Context, providerID string) error {
panic("unimplemented")
}