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clusterapi_controller_test.go
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clusterapi_controller_test.go
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/*
Copyright 2020 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package clusterapi
import (
"context"
"fmt"
"math/rand"
"path"
"reflect"
"sort"
"testing"
"time"
autoscalingv1 "k8s.io/api/autoscaling/v1"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/wait"
fakediscovery "k8s.io/client-go/discovery/fake"
"k8s.io/client-go/dynamic"
fakedynamic "k8s.io/client-go/dynamic/fake"
"k8s.io/client-go/informers"
fakekube "k8s.io/client-go/kubernetes/fake"
fakescale "k8s.io/client-go/scale/fake"
clientgotesting "k8s.io/client-go/testing"
klog "k8s.io/klog/v2"
"k8s.io/autoscaler/cluster-autoscaler/cloudprovider"
)
type testControllerShutdownFunc func()
type testConfig struct {
spec *testSpec
clusterName string
namespace string
machineDeployment *unstructured.Unstructured
machineSet *unstructured.Unstructured
machineTemplate *unstructured.Unstructured
machinePool *unstructured.Unstructured
machines []*unstructured.Unstructured
nodes []*corev1.Node
}
type testSpec struct {
annotations map[string]string
capacity map[string]string
machineDeploymentName string
machineSetName string
machinePoolName string
clusterName string
namespace string
nodeCount int
rootIsMachineDeployment bool
}
const customCAPIGroup = "custom.x-k8s.io"
const fifteenSecondDuration = time.Second * 15
func mustCreateTestController(t *testing.T, testConfigs ...*testConfig) (*machineController, testControllerShutdownFunc) {
t.Helper()
nodeObjects := make([]runtime.Object, 0)
machineObjects := make([]runtime.Object, 0)
for _, config := range testConfigs {
for i := range config.nodes {
nodeObjects = append(nodeObjects, config.nodes[i])
}
for i := range config.machines {
machineObjects = append(machineObjects, config.machines[i])
}
machineObjects = append(machineObjects, config.machineSet)
if config.machineDeployment != nil {
machineObjects = append(machineObjects, config.machineDeployment)
}
if config.machineTemplate != nil {
machineObjects = append(machineObjects, config.machineTemplate)
}
}
kubeclientSet := fakekube.NewSimpleClientset(nodeObjects...)
dynamicClientset := fakedynamic.NewSimpleDynamicClientWithCustomListKinds(
runtime.NewScheme(),
map[schema.GroupVersionResource]string{
{Group: "cluster.x-k8s.io", Version: "v1alpha3", Resource: "machinedeployments"}: "kindList",
{Group: "cluster.x-k8s.io", Version: "v1alpha3", Resource: "machines"}: "kindList",
{Group: "cluster.x-k8s.io", Version: "v1alpha3", Resource: "machinesets"}: "kindList",
{Group: "cluster.x-k8s.io", Version: "v1alpha3", Resource: "machinepools"}: "kindList",
{Group: "cluster.x-k8s.io", Version: "v1beta1", Resource: "machinedeployments"}: "kindList",
{Group: "cluster.x-k8s.io", Version: "v1beta1", Resource: "machines"}: "kindList",
{Group: "cluster.x-k8s.io", Version: "v1beta1", Resource: "machinesets"}: "kindList",
{Group: "custom.x-k8s.io", Version: "v1beta1", Resource: "machinepools"}: "kindList",
{Group: "custom.x-k8s.io", Version: "v1beta1", Resource: "machinedeployments"}: "kindList",
{Group: "custom.x-k8s.io", Version: "v1beta1", Resource: "machines"}: "kindList",
{Group: "custom.x-k8s.io", Version: "v1beta1", Resource: "machinesets"}: "kindList",
{Group: "infrastructure.cluster.x-k8s.io", Version: "v1beta1", Resource: "machinetemplates"}: "kindList",
},
machineObjects...,
)
discoveryClient := &fakediscovery.FakeDiscovery{
Fake: &clientgotesting.Fake{
Resources: []*metav1.APIResourceList{
{
GroupVersion: "infrastructure.cluster.x-k8s.io/v1beta1",
APIResources: []metav1.APIResource{
{
Name: "machinetemplates",
},
},
},
{
GroupVersion: fmt.Sprintf("%s/v1beta1", customCAPIGroup),
APIResources: []metav1.APIResource{
{
Name: resourceNameMachineDeployment,
},
{
Name: resourceNameMachineSet,
},
{
Name: resourceNameMachine,
},
{
Name: resourceNameMachinePool,
},
},
},
{
GroupVersion: fmt.Sprintf("%s/v1alpha3", defaultCAPIGroup),
APIResources: []metav1.APIResource{
{
Name: resourceNameMachineDeployment,
},
{
Name: resourceNameMachineSet,
},
{
Name: resourceNameMachine,
},
{
Name: resourceNameMachinePool,
},
},
},
},
},
}
scaleClient := &fakescale.FakeScaleClient{Fake: clientgotesting.Fake{}}
scaleReactor := func(action clientgotesting.Action) (bool, runtime.Object, error) {
resource := action.GetResource().Resource
if resource != resourceNameMachineSet && resource != resourceNameMachineDeployment && resource != resourceNameMachinePool {
// Do not attempt to react to resources that are not MachineSet, MachineDeployment, or MachinePool
return false, nil, nil
}
subresource := action.GetSubresource()
if subresource != "scale" {
// Handle a bug in the client-go fakeNamespaceScaleClient, where the action namespace and subresource are
// switched for update actions
if action.GetVerb() != "update" || action.GetNamespace() != "scale" {
// Do not attempt to respond to anything but scale subresource requests
return false, nil, nil
}
}
gvr := schema.GroupVersionResource{
Group: action.GetResource().Group,
Version: "v1alpha3",
Resource: resource,
}
switch action.GetVerb() {
case "get":
action, ok := action.(clientgotesting.GetAction)
if !ok {
return true, nil, fmt.Errorf("failed to convert Action to GetAction: %T", action)
}
u, err := dynamicClientset.Resource(gvr).Namespace(action.GetNamespace()).Get(context.TODO(), action.GetName(), metav1.GetOptions{})
if err != nil {
return true, nil, err
}
replicas, found, err := unstructured.NestedInt64(u.UnstructuredContent(), "spec", "replicas")
if err != nil {
return true, nil, err
}
if !found {
replicas = 0
}
result := &autoscalingv1.Scale{
ObjectMeta: metav1.ObjectMeta{
Name: u.GetName(),
Namespace: u.GetNamespace(),
},
Spec: autoscalingv1.ScaleSpec{
Replicas: int32(replicas),
},
}
return true, result, nil
case "update":
action, ok := action.(clientgotesting.UpdateAction)
if !ok {
return true, nil, fmt.Errorf("failed to convert Action to UpdateAction: %T", action)
}
s, ok := action.GetObject().(*autoscalingv1.Scale)
if !ok {
return true, nil, fmt.Errorf("failed to convert Resource to Scale: %T", s)
}
u, err := dynamicClientset.Resource(gvr).Namespace(s.Namespace).Get(context.TODO(), s.Name, metav1.GetOptions{})
if err != nil {
return true, nil, fmt.Errorf("failed to fetch underlying %s resource: %s/%s", resource, s.Namespace, s.Name)
}
if err := unstructured.SetNestedField(u.Object, int64(s.Spec.Replicas), "spec", "replicas"); err != nil {
return true, nil, err
}
_, err = dynamicClientset.Resource(gvr).Namespace(s.Namespace).Update(context.TODO(), u, metav1.UpdateOptions{})
if err != nil {
return true, nil, err
}
return true, s, nil
default:
return true, nil, fmt.Errorf("unknown verb: %v", action.GetVerb())
}
}
scaleClient.AddReactor("*", "*", scaleReactor)
stopCh := make(chan struct{})
controller, err := newMachineController(dynamicClientset, kubeclientSet, discoveryClient, scaleClient, cloudprovider.NodeGroupDiscoveryOptions{}, stopCh)
if err != nil {
t.Fatal("failed to create test controller")
}
if err := controller.run(); err != nil {
t.Fatalf("failed to run controller: %v", err)
}
return controller, func() {
close(stopCh)
}
}
func createMachineSetTestConfig(namespace, clusterName, namePrefix string, nodeCount int, annotations map[string]string, capacity map[string]string) *testConfig {
return createTestConfigs(createTestSpecs(namespace, clusterName, namePrefix, 1, nodeCount, false, annotations, capacity)...)[0]
}
func createMachineSetTestConfigs(namespace, clusterName, namePrefix string, configCount, nodeCount int, annotations map[string]string, capacity map[string]string) []*testConfig {
return createTestConfigs(createTestSpecs(namespace, clusterName, namePrefix, configCount, nodeCount, false, annotations, capacity)...)
}
func createMachineDeploymentTestConfig(namespace, clusterName, namePrefix string, nodeCount int, annotations map[string]string, capacity map[string]string) *testConfig {
return createTestConfigs(createTestSpecs(namespace, clusterName, namePrefix, 1, nodeCount, true, annotations, capacity)...)[0]
}
func createMachineDeploymentTestConfigs(namespace, clusterName, namePrefix string, configCount, nodeCount int, annotations map[string]string, capacity map[string]string) []*testConfig {
return createTestConfigs(createTestSpecs(namespace, clusterName, namePrefix, configCount, nodeCount, true, annotations, capacity)...)
}
func createTestSpecs(namespace, clusterName, namePrefix string, scalableResourceCount, nodeCount int, isMachineDeployment bool, annotations map[string]string, capacity map[string]string) []testSpec {
var specs []testSpec
for i := 0; i < scalableResourceCount; i++ {
specs = append(specs, createTestSpec(namespace, clusterName, fmt.Sprintf("%s-%d", namePrefix, i), nodeCount, isMachineDeployment, annotations, capacity))
}
return specs
}
func createTestSpec(namespace, clusterName, name string, nodeCount int, isMachineDeployment bool, annotations map[string]string, capacity map[string]string) testSpec {
return testSpec{
annotations: annotations,
capacity: capacity,
machineDeploymentName: name,
machineSetName: name,
clusterName: clusterName,
namespace: namespace,
nodeCount: nodeCount,
rootIsMachineDeployment: isMachineDeployment,
}
}
func createTestConfigs(specs ...testSpec) []*testConfig {
result := make([]*testConfig, 0, len(specs))
for i, spec := range specs {
config := &testConfig{
spec: &specs[i],
namespace: spec.namespace,
clusterName: spec.clusterName,
nodes: make([]*corev1.Node, spec.nodeCount),
machines: make([]*unstructured.Unstructured, spec.nodeCount),
}
machineSetLabels := map[string]string{
"clusterName": spec.clusterName,
"machineSetName": spec.machineSetName,
}
config.machineSet = &unstructured.Unstructured{
Object: map[string]interface{}{
"kind": machineSetKind,
"apiVersion": "cluster.x-k8s.io/v1alpha3",
"metadata": map[string]interface{}{
"name": spec.machineSetName,
"namespace": spec.namespace,
"uid": spec.machineSetName,
},
"spec": map[string]interface{}{
"clusterName": spec.clusterName,
"replicas": int64(spec.nodeCount),
"template": map[string]interface{}{
"spec": map[string]interface{}{
"infrastructureRef": map[string]interface{}{
"apiVersion": "infrastructure.cluster.x-k8s.io/v1beta1",
"kind": machineTemplateKind,
"name": "TestMachineTemplate",
},
},
},
},
"status": map[string]interface{}{},
},
}
config.machineSet.SetAnnotations(make(map[string]string))
if !spec.rootIsMachineDeployment {
config.machineSet.SetAnnotations(spec.annotations)
} else {
machineSetLabels["machineDeploymentName"] = spec.machineDeploymentName
machineDeploymentLabels := map[string]string{
"clusterName": spec.clusterName,
"machineDeploymentName": spec.machineDeploymentName,
}
config.machineDeployment = &unstructured.Unstructured{
Object: map[string]interface{}{
"kind": machineDeploymentKind,
"apiVersion": "cluster.x-k8s.io/v1alpha3",
"metadata": map[string]interface{}{
"name": spec.machineDeploymentName,
"namespace": spec.namespace,
"uid": spec.machineDeploymentName,
},
"spec": map[string]interface{}{
"clusterName": spec.clusterName,
"replicas": int64(spec.nodeCount),
"template": map[string]interface{}{
"spec": map[string]interface{}{
"infrastructureRef": map[string]interface{}{
"apiVersion": "infrastructure.cluster.x-k8s.io/v1beta1",
"kind": machineTemplateKind,
"name": "TestMachineTemplate",
},
},
},
},
"status": map[string]interface{}{},
},
}
config.machineDeployment.SetAnnotations(spec.annotations)
config.machineDeployment.SetLabels(machineDeploymentLabels)
if err := unstructured.SetNestedStringMap(config.machineDeployment.Object, machineDeploymentLabels, "spec", "selector", "matchLabels"); err != nil {
panic(err)
}
ownerRefs := []metav1.OwnerReference{
{
Name: config.machineDeployment.GetName(),
Kind: config.machineDeployment.GetKind(),
UID: config.machineDeployment.GetUID(),
},
}
config.machineSet.SetOwnerReferences(ownerRefs)
}
config.machineSet.SetLabels(machineSetLabels)
if err := unstructured.SetNestedStringMap(config.machineSet.Object, machineSetLabels, "spec", "selector", "matchLabels"); err != nil {
panic(err)
}
machineOwner := metav1.OwnerReference{
Name: config.machineSet.GetName(),
Kind: config.machineSet.GetKind(),
UID: config.machineSet.GetUID(),
}
if spec.capacity != nil {
klog.V(4).Infof("adding capacity to machine template")
config.machineTemplate = &unstructured.Unstructured{
Object: map[string]interface{}{
"apiVersion": "infrastructure.cluster.x-k8s.io/v1beta1",
"kind": machineTemplateKind,
"metadata": map[string]interface{}{
"name": "TestMachineTemplate",
"namespace": spec.namespace,
"uid": "TestMachineTemplate",
},
},
}
if err := unstructured.SetNestedStringMap(config.machineTemplate.Object, spec.capacity, "status", "capacity"); err != nil {
panic(err)
}
} else {
klog.V(4).Infof("not adding capacity")
}
for j := 0; j < spec.nodeCount; j++ {
config.nodes[j], config.machines[j] = makeLinkedNodeAndMachine(j, spec.namespace, spec.clusterName, machineOwner, machineSetLabels)
}
result = append(result, config)
}
return result
}
// makeLinkedNodeAndMachine creates a node and machine. The machine
// has its NodeRef set to the new node and the new machine's owner
// reference is set to owner.
func makeLinkedNodeAndMachine(i int, namespace, clusterName string, owner metav1.OwnerReference, machineLabels map[string]string) (*corev1.Node, *unstructured.Unstructured) {
node := &corev1.Node{
TypeMeta: metav1.TypeMeta{
Kind: "Node",
},
ObjectMeta: metav1.ObjectMeta{
Name: fmt.Sprintf("%s-%s-node-%d", namespace, owner.Name, i),
Annotations: map[string]string{
machineAnnotationKey: fmt.Sprintf("%s/%s-%s-machine-%d", namespace, namespace, owner.Name, i),
},
},
Spec: corev1.NodeSpec{
ProviderID: fmt.Sprintf("test:////%s-%s-nodeid-%d", namespace, owner.Name, i),
},
}
machine := &unstructured.Unstructured{
Object: map[string]interface{}{
"kind": machineKind,
"apiVersion": "cluster.x-k8s.io/v1alpha3",
"metadata": map[string]interface{}{
"name": fmt.Sprintf("%s-%s-machine-%d", namespace, owner.Name, i),
"namespace": namespace,
},
"spec": map[string]interface{}{
"clusterName": clusterName,
"providerID": fmt.Sprintf("test:////%s-%s-nodeid-%d", namespace, owner.Name, i),
},
"status": map[string]interface{}{
"nodeRef": map[string]interface{}{
"kind": node.Kind,
"name": node.Name,
},
},
},
}
machine.SetOwnerReferences([]metav1.OwnerReference{owner})
machine.SetLabels(machineLabels)
return node, machine
}
func addTestConfigs(t *testing.T, controller *machineController, testConfigs ...*testConfig) error {
t.Helper()
for _, config := range testConfigs {
if config.machineDeployment != nil {
if err := createResource(controller.managementClient, controller.machineDeploymentInformer, controller.machineDeploymentResource, config.machineDeployment); err != nil {
return err
}
}
if err := createResource(controller.managementClient, controller.machineSetInformer, controller.machineSetResource, config.machineSet); err != nil {
return err
}
if config.machinePool != nil {
if err := createResource(controller.managementClient, controller.machinePoolInformer, controller.machinePoolResource, config.machinePool); err != nil {
return err
}
}
for i := range config.machines {
if err := createResource(controller.managementClient, controller.machineInformer, controller.machineResource, config.machines[i]); err != nil {
return err
}
}
for i := range config.nodes {
if err := controller.nodeInformer.GetStore().Add(config.nodes[i]); err != nil {
return err
}
}
}
return nil
}
func createResource(client dynamic.Interface, informer informers.GenericInformer, gvr schema.GroupVersionResource, resource *unstructured.Unstructured) error {
if _, err := client.Resource(gvr).Namespace(resource.GetNamespace()).Create(context.TODO(), resource, metav1.CreateOptions{}); err != nil {
return err
}
return wait.PollImmediate(time.Microsecond, fifteenSecondDuration, func() (bool, error) {
_, err := informer.Lister().ByNamespace(resource.GetNamespace()).Get(resource.GetName())
if err != nil {
if apierrors.IsNotFound(err) {
return false, nil
}
return false, err
}
return true, nil
})
}
func updateResource(client dynamic.Interface, informer informers.GenericInformer, gvr schema.GroupVersionResource, resource *unstructured.Unstructured) error {
updateResult, err := client.Resource(gvr).Namespace(resource.GetNamespace()).Update(context.TODO(), resource, metav1.UpdateOptions{})
if err != nil {
return err
}
return wait.PollImmediate(time.Microsecond, fifteenSecondDuration, func() (bool, error) {
result, err := informer.Lister().ByNamespace(resource.GetNamespace()).Get(resource.GetName())
if err != nil {
return false, err
}
return reflect.DeepEqual(updateResult, result), nil
})
}
func deleteResource(client dynamic.Interface, informer informers.GenericInformer, gvr schema.GroupVersionResource, resource *unstructured.Unstructured) error {
if err := client.Resource(gvr).Namespace(resource.GetNamespace()).Delete(context.TODO(), resource.GetName(), metav1.DeleteOptions{}); err != nil {
return err
}
return wait.PollImmediate(time.Microsecond, fifteenSecondDuration, func() (bool, error) {
_, err := informer.Lister().ByNamespace(resource.GetNamespace()).Get(resource.GetName())
if err != nil && apierrors.IsNotFound(err) {
return true, nil
}
return false, err
})
}
func deleteTestConfigs(t *testing.T, controller *machineController, testConfigs ...*testConfig) error {
t.Helper()
for _, config := range testConfigs {
for i := range config.nodes {
if err := controller.nodeInformer.GetStore().Delete(config.nodes[i]); err != nil {
return err
}
}
for i := range config.machines {
if err := deleteResource(controller.managementClient, controller.machineInformer, controller.machineResource, config.machines[i]); err != nil {
return err
}
}
if err := deleteResource(controller.managementClient, controller.machineSetInformer, controller.machineSetResource, config.machineSet); err != nil {
return err
}
if config.machineDeployment != nil {
if err := deleteResource(controller.managementClient, controller.machineDeploymentInformer, controller.machineDeploymentResource, config.machineDeployment); err != nil {
return err
}
}
}
return nil
}
func TestControllerFindMachine(t *testing.T) {
type testCase struct {
description string
name string
namespace string
useAnnotation bool
lookupSucceeds bool
}
var testCases = []testCase{{
description: "lookup fails",
lookupSucceeds: false,
useAnnotation: false,
name: "machine-does-not-exist",
namespace: "namespace-does-not-exist",
}, {
description: "lookup fails in valid namespace",
lookupSucceeds: false,
useAnnotation: false,
name: "machine-does-not-exist-in-existing-namespace",
}, {
description: "lookup succeeds",
lookupSucceeds: true,
useAnnotation: false,
}, {
description: "lookup succeeds with annotation",
lookupSucceeds: true,
useAnnotation: true,
}}
test := func(t *testing.T, tc testCase, testConfig *testConfig) {
controller, stop := mustCreateTestController(t, testConfig)
defer stop()
machine, err := controller.findMachine(path.Join(tc.namespace, tc.name))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if tc.lookupSucceeds && machine == nil {
t.Error("expected success, findMachine failed")
}
if tc.lookupSucceeds && machine != nil {
if machine.GetName() != tc.name {
t.Errorf("expected %q, got %q", tc.name, machine.GetName())
}
if machine.GetNamespace() != tc.namespace {
t.Errorf("expected %q, got %q", tc.namespace, machine.GetNamespace())
}
}
}
for _, tc := range testCases {
t.Run(tc.description, func(t *testing.T) {
testConfig := createMachineSetTestConfig(RandomString(6), RandomString(6), RandomString(6), 1, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
if tc.name == "" {
tc.name = testConfig.machines[0].GetName()
}
if tc.namespace == "" {
tc.namespace = testConfig.machines[0].GetNamespace()
}
if tc.useAnnotation {
for i := range testConfig.machines {
n := testConfig.nodes[i]
annotations := n.GetAnnotations()
_, ok := annotations[machineAnnotationKey]
if !ok {
t.Fatal("node did not contain machineAnnotationKey")
}
delete(annotations, machineAnnotationKey)
n.SetAnnotations(annotations)
}
}
test(t, tc, testConfig)
})
}
}
func TestControllerFindMachineOwner(t *testing.T) {
testConfig := createMachineSetTestConfig(RandomString(6), RandomString(6), RandomString(6), 1, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
controller, stop := mustCreateTestController(t, testConfig)
defer stop()
// Test #1: Lookup succeeds
testResult1, err := controller.findMachineOwner(testConfig.machines[0].DeepCopy())
if err != nil {
t.Fatalf("unexpected error, got %v", err)
}
if testResult1 == nil {
t.Fatal("expected non-nil result")
}
if testConfig.spec.machineSetName != testResult1.GetName() {
t.Errorf("expected %q, got %q", testConfig.spec.machineSetName, testResult1.GetName())
}
// Test #2: Lookup fails as the machine ownerref Name != machineset Name
testMachine2 := testConfig.machines[0].DeepCopy()
ownerRefs := testMachine2.GetOwnerReferences()
ownerRefs[0].Name = "does-not-match-machineset"
testMachine2.SetOwnerReferences(ownerRefs)
testResult2, err := controller.findMachineOwner(testMachine2)
if err != nil {
t.Fatalf("unexpected error, got %v", err)
}
if testResult2 != nil {
t.Fatal("expected nil result")
}
// Test #3: Delete the MachineSet and lookup should fail
if err := deleteResource(controller.managementClient, controller.machineSetInformer, controller.machineSetResource, testConfig.machineSet); err != nil {
t.Fatalf("unexpected error, got %v", err)
}
testResult3, err := controller.findMachineOwner(testConfig.machines[0].DeepCopy())
if err != nil {
t.Fatalf("unexpected error, got %v", err)
}
if testResult3 != nil {
t.Fatal("expected lookup to fail")
}
}
func TestControllerFindMachineByProviderID(t *testing.T) {
testConfig := createMachineSetTestConfig(RandomString(6), RandomString(6), RandomString(6), 1, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
controller, stop := mustCreateTestController(t, testConfig)
defer stop()
// Remove all the "machine" annotation values on all the
// nodes. We want to force findMachineByProviderID() to only
// be successful by searching on provider ID.
for _, node := range testConfig.nodes {
delete(node.Annotations, machineAnnotationKey)
if err := controller.nodeInformer.GetStore().Update(node); err != nil {
t.Fatalf("unexpected error updating node, got %v", err)
}
}
// Test #1: Verify underlying machine provider ID matches
machine, err := controller.findMachineByProviderID(normalizedProviderString(testConfig.nodes[0].Spec.ProviderID))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if machine == nil {
t.Fatal("expected to find machine")
}
if !reflect.DeepEqual(machine, testConfig.machines[0]) {
t.Fatalf("expected machines to be equal - expected %+v, got %+v", testConfig.machines[0], machine)
}
// Test #2: Verify machine returned by fake provider ID is correct machine
fakeProviderID := fmt.Sprintf("%s$s/%s", testConfig.machines[0].GetNamespace(), testConfig.machines[0].GetName())
machine, err = controller.findMachineByProviderID(normalizedProviderID(fakeProviderID))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if machine != nil {
t.Fatal("expected find to fail")
}
// Test #3: Verify machine is not found if it has a
// non-existent or different provider ID.
machine = testConfig.machines[0].DeepCopy()
if err := unstructured.SetNestedField(machine.Object, "does-not-match", "spec", "providerID"); err != nil {
t.Fatalf("unexpected error: %v", err)
}
if err := updateResource(controller.managementClient, controller.machineInformer, controller.machineResource, machine); err != nil {
t.Fatalf("unexpected error updating machine, got %v", err)
}
machine, err = controller.findMachineByProviderID(normalizedProviderString(testConfig.nodes[0].Spec.ProviderID))
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if machine != nil {
t.Fatal("expected find to fail")
}
}
func TestControllerFindNodeByNodeName(t *testing.T) {
testConfig := createMachineSetTestConfig(RandomString(6), RandomString(6), RandomString(6), 1, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
controller, stop := mustCreateTestController(t, testConfig)
defer stop()
// Test #1: Verify known node can be found
node, err := controller.findNodeByNodeName(testConfig.nodes[0].Name)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if node == nil {
t.Fatal("expected lookup to be successful")
}
// Test #2: Verify non-existent node cannot be found
node, err = controller.findNodeByNodeName(testConfig.nodes[0].Name + "non-existent")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if node != nil {
t.Fatal("expected lookup to fail")
}
}
func TestControllerListMachinesForScalableResource(t *testing.T) {
test := func(t *testing.T, testConfig1 *testConfig, testConfig2 *testConfig) {
controller, stop := mustCreateTestController(t, testConfig1)
defer stop()
if err := addTestConfigs(t, controller, testConfig2); err != nil {
t.Fatalf("unexpected error: %v", err)
}
scalableResource1 := testConfig1.machineSet
if testConfig1.machineDeployment != nil {
scalableResource1 = testConfig1.machineDeployment
}
scalableResource2 := testConfig2.machineSet
if testConfig2.machineDeployment != nil {
scalableResource2 = testConfig2.machineDeployment
}
machinesInScalableResource1, err := controller.listMachinesForScalableResource(scalableResource1)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
machinesInScalableResource2, err := controller.listMachinesForScalableResource(scalableResource2)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
actual := len(machinesInScalableResource1) + len(machinesInScalableResource2)
expected := len(testConfig1.machines) + len(testConfig2.machines)
if actual != expected {
t.Fatalf("expected %d machines, got %d", expected, actual)
}
// Sort results as order is not guaranteed.
sort.Slice(machinesInScalableResource1, func(i, j int) bool {
return machinesInScalableResource1[i].GetName() < machinesInScalableResource1[j].GetName()
})
sort.Slice(machinesInScalableResource2, func(i, j int) bool {
return machinesInScalableResource2[i].GetName() < machinesInScalableResource2[j].GetName()
})
for i, m := range machinesInScalableResource1 {
if m.GetName() != testConfig1.machines[i].GetName() {
t.Errorf("expected %q, got %q", testConfig1.machines[i].GetName(), m.GetName())
}
if m.GetNamespace() != testConfig1.machines[i].GetNamespace() {
t.Errorf("expected %q, got %q", testConfig1.machines[i].GetNamespace(), m.GetNamespace())
}
}
for i, m := range machinesInScalableResource2 {
if m.GetName() != testConfig2.machines[i].GetName() {
t.Errorf("expected %q, got %q", testConfig2.machines[i].GetName(), m.GetName())
}
if m.GetNamespace() != testConfig2.machines[i].GetNamespace() {
t.Errorf("expected %q, got %q", testConfig2.machines[i].GetNamespace(), m.GetNamespace())
}
}
// Finally everything in the respective objects should be equal.
if !reflect.DeepEqual(testConfig1.machines, machinesInScalableResource1) {
t.Fatalf("expected %+v, got %+v", testConfig1.machines, machinesInScalableResource2)
}
if !reflect.DeepEqual(testConfig2.machines, machinesInScalableResource2) {
t.Fatalf("expected %+v, got %+v", testConfig2.machines, machinesInScalableResource2)
}
}
t.Run("MachineSet", func(t *testing.T) {
namespace := RandomString(6)
clusterName := RandomString(6)
testConfig1 := createMachineSetTestConfig(namespace, clusterName, RandomString(6), 5, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
// Construct a second set of objects and add the machines,
// nodes and the additional machineset to the existing set of
// test objects in the controller. This gives us two
// machinesets, each with their own machines and linked nodes.
testConfig2 := createMachineSetTestConfig(namespace, clusterName, RandomString(6), 5, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
test(t, testConfig1, testConfig2)
})
t.Run("MachineDeployment", func(t *testing.T) {
namespace := RandomString(6)
clusterName := RandomString(6)
testConfig1 := createMachineDeploymentTestConfig(namespace, clusterName, RandomString(6), 5, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
// Construct a second set of objects and add the machines,
// nodes, machineset, and the additional machineset to the existing set of
// test objects in the controller. This gives us two
// machinedeployments, each with their own machineSet, machines and linked nodes.
testConfig2 := createMachineDeploymentTestConfig(namespace, clusterName, RandomString(6), 5, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
test(t, testConfig1, testConfig2)
})
}
func TestControllerLookupNodeGroupForNonExistentNode(t *testing.T) {
test := func(t *testing.T, testConfig *testConfig) {
controller, stop := mustCreateTestController(t, testConfig)
defer stop()
node := testConfig.nodes[0].DeepCopy()
node.Spec.ProviderID = "does-not-exist"
ng, err := controller.nodeGroupForNode(node)
// Looking up a node that doesn't exist doesn't generate an
// error. But, equally, the ng should actually be nil.
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if ng != nil {
t.Fatalf("unexpected nodegroup: %v", ng)
}
}
t.Run("MachineSet", func(t *testing.T) {
testConfig := createMachineSetTestConfig(RandomString(6), RandomString(6), RandomString(6), 1, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
test(t, testConfig)
})
t.Run("MachineDeployment", func(t *testing.T) {
testConfig := createMachineDeploymentTestConfig(RandomString(6), RandomString(6), RandomString(6), 1, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
test(t, testConfig)
})
}
func TestControllerNodeGroupForNodeWithMissingMachineOwner(t *testing.T) {
test := func(t *testing.T, testConfig *testConfig) {
controller, stop := mustCreateTestController(t, testConfig)
defer stop()
machine := testConfig.machines[0].DeepCopy()
machine.SetOwnerReferences([]metav1.OwnerReference{})
if err := updateResource(controller.managementClient, controller.machineInformer, controller.machineResource, machine); err != nil {
t.Fatalf("unexpected error updating machine, got %v", err)
}
ng, err := controller.nodeGroupForNode(testConfig.nodes[0])
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if ng != nil {
t.Fatalf("unexpected nodegroup: %v", ng)
}
}
t.Run("MachineSet", func(t *testing.T) {
testConfig := createMachineSetTestConfig(RandomString(6), RandomString(6), RandomString(6), 1, map[string]string{
nodeGroupMinSizeAnnotationKey: "1",
nodeGroupMaxSizeAnnotationKey: "10",
}, nil)
test(t, testConfig)
})