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utils_test.go
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/*
Copyright 2019 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 endpointslice
import (
"fmt"
"reflect"
"testing"
"time"
"github.com/stretchr/testify/assert"
v1 "k8s.io/api/core/v1"
discovery "k8s.io/api/discovery/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/rand"
"k8s.io/client-go/kubernetes/fake"
k8stesting "k8s.io/client-go/testing"
"k8s.io/klog/v2/ktesting"
"k8s.io/utils/pointer"
)
func TestNewEndpointSlice(t *testing.T) {
ipAddressType := discovery.AddressTypeIPv4
portName := "foo"
protocol := v1.ProtocolTCP
endpointMeta := endpointMeta{
ports: []discovery.EndpointPort{{Name: &portName, Protocol: &protocol}},
addressType: ipAddressType,
}
service := v1.Service{
ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "test"},
Spec: v1.ServiceSpec{
ClusterIP: "1.1.1.1",
Ports: []v1.ServicePort{{Port: 80}},
Selector: map[string]string{"foo": "bar"},
},
}
gvk := schema.GroupVersionKind{Version: "v1", Kind: "Service"}
ownerRef := metav1.NewControllerRef(&service, gvk)
testCases := []struct {
name string
updateSvc func(svc v1.Service) v1.Service // given basic valid services, each test case can customize them
expectedSlice *discovery.EndpointSlice
}{
{
name: "Service without labels",
updateSvc: func(svc v1.Service) v1.Service {
return svc
},
expectedSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
GenerateName: fmt.Sprintf("%s-", service.Name),
OwnerReferences: []metav1.OwnerReference{*ownerRef},
Namespace: service.Namespace,
},
Ports: endpointMeta.ports,
AddressType: endpointMeta.addressType,
Endpoints: []discovery.Endpoint{},
},
},
{
name: "Service with labels",
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{"foo": "bar"}
svc.Labels = labels
return svc
},
expectedSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
"foo": "bar",
},
GenerateName: fmt.Sprintf("%s-", service.Name),
OwnerReferences: []metav1.OwnerReference{*ownerRef},
Namespace: service.Namespace,
},
Ports: endpointMeta.ports,
AddressType: endpointMeta.addressType,
Endpoints: []discovery.Endpoint{},
},
},
{
name: "Headless Service with labels",
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{"foo": "bar"}
svc.Labels = labels
svc.Spec.ClusterIP = v1.ClusterIPNone
return svc
},
expectedSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
v1.IsHeadlessService: "",
"foo": "bar",
},
GenerateName: fmt.Sprintf("%s-", service.Name),
OwnerReferences: []metav1.OwnerReference{*ownerRef},
Namespace: service.Namespace,
},
Ports: endpointMeta.ports,
AddressType: endpointMeta.addressType,
Endpoints: []discovery.Endpoint{},
},
},
{
name: "Service with multiple labels",
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{"foo": "bar", "foo2": "bar2"}
svc.Labels = labels
return svc
},
expectedSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
"foo": "bar",
"foo2": "bar2",
},
GenerateName: fmt.Sprintf("%s-", service.Name),
OwnerReferences: []metav1.OwnerReference{*ownerRef},
Namespace: service.Namespace,
},
Ports: endpointMeta.ports,
AddressType: endpointMeta.addressType,
Endpoints: []discovery.Endpoint{},
},
},
{
name: "Evil service hijacking endpoint slices labels",
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{
discovery.LabelServiceName: "bad",
discovery.LabelManagedBy: "actor",
"foo": "bar",
}
svc.Labels = labels
return svc
},
expectedSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
"foo": "bar",
},
GenerateName: fmt.Sprintf("%s-", service.Name),
OwnerReferences: []metav1.OwnerReference{*ownerRef},
Namespace: service.Namespace,
},
Ports: endpointMeta.ports,
AddressType: endpointMeta.addressType,
Endpoints: []discovery.Endpoint{},
},
},
{
name: "Service with annotations",
updateSvc: func(svc v1.Service) v1.Service {
annotations := map[string]string{"foo": "bar"}
svc.Annotations = annotations
return svc
},
expectedSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
GenerateName: fmt.Sprintf("%s-", service.Name),
OwnerReferences: []metav1.OwnerReference{*ownerRef},
Namespace: service.Namespace,
},
Ports: endpointMeta.ports,
AddressType: endpointMeta.addressType,
Endpoints: []discovery.Endpoint{},
},
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
logger, _ := ktesting.NewTestContext(t)
svc := tc.updateSvc(service)
generatedSlice := newEndpointSlice(logger, &svc, &endpointMeta, controllerName)
assert.EqualValues(t, tc.expectedSlice, generatedSlice)
})
}
}
func TestPodToEndpoint(t *testing.T) {
ns := "test"
svc, _ := newServiceAndEndpointMeta("foo", ns)
svcPublishNotReady, _ := newServiceAndEndpointMeta("publishnotready", ns)
svcPublishNotReady.Spec.PublishNotReadyAddresses = true
readyPod := newPod(1, ns, true, 1, false)
readyTerminatingPod := newPod(1, ns, true, 1, true)
readyPodHostname := newPod(1, ns, true, 1, false)
readyPodHostname.Spec.Subdomain = svc.Name
readyPodHostname.Spec.Hostname = "example-hostname"
unreadyPod := newPod(1, ns, false, 1, false)
unreadyTerminatingPod := newPod(1, ns, false, 1, true)
multiIPPod := newPod(1, ns, true, 1, false)
multiIPPod.Status.PodIPs = []v1.PodIP{{IP: "1.2.3.4"}, {IP: "1234::5678:0000:0000:9abc:def0"}}
node1 := &v1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: readyPod.Spec.NodeName,
Labels: map[string]string{
"topology.kubernetes.io/zone": "us-central1-a",
"topology.kubernetes.io/region": "us-central1",
},
},
}
testCases := []struct {
name string
pod *v1.Pod
node *v1.Node
svc *v1.Service
expectedEndpoint discovery.Endpoint
publishNotReadyAddresses bool
}{
{
name: "Ready pod",
pod: readyPod,
svc: &svc,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.5"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(true),
Serving: pointer.Bool(true),
Terminating: pointer.Bool(false),
},
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
},
},
},
{
name: "Ready pod + publishNotReadyAddresses",
pod: readyPod,
svc: &svcPublishNotReady,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.5"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(true),
Serving: pointer.Bool(true),
Terminating: pointer.Bool(false),
},
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
},
},
},
{
name: "Unready pod",
pod: unreadyPod,
svc: &svc,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.5"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(false),
Serving: pointer.Bool(false),
Terminating: pointer.Bool(false),
},
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
},
},
},
{
name: "Unready pod + publishNotReadyAddresses",
pod: unreadyPod,
svc: &svcPublishNotReady,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.5"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(true),
Serving: pointer.Bool(false),
Terminating: pointer.Bool(false),
},
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
},
},
},
{
name: "Ready pod + node labels",
pod: readyPod,
node: node1,
svc: &svc,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.5"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(true),
Serving: pointer.Bool(true),
Terminating: pointer.Bool(false),
},
Zone: pointer.String("us-central1-a"),
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
},
},
},
{
name: "Multi IP Ready pod + node labels",
pod: multiIPPod,
node: node1,
svc: &svc,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.4"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(true),
Serving: pointer.Bool(true),
Terminating: pointer.Bool(false),
},
Zone: pointer.String("us-central1-a"),
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
},
},
},
{
name: "Ready pod + hostname",
pod: readyPodHostname,
node: node1,
svc: &svc,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.5"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(true),
Serving: pointer.Bool(true),
Terminating: pointer.Bool(false),
},
Hostname: &readyPodHostname.Spec.Hostname,
Zone: pointer.String("us-central1-a"),
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPodHostname.Name,
UID: readyPodHostname.UID,
},
},
},
{
name: "Ready pod",
pod: readyPod,
svc: &svc,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.5"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(true),
Serving: pointer.Bool(true),
Terminating: pointer.Bool(false),
},
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
},
},
},
{
name: "Ready terminating pod",
pod: readyTerminatingPod,
svc: &svc,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.5"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(false),
Serving: pointer.Bool(true),
Terminating: pointer.Bool(true),
},
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
},
},
},
{
name: "Not ready terminating pod",
pod: unreadyTerminatingPod,
svc: &svc,
expectedEndpoint: discovery.Endpoint{
Addresses: []string{"1.2.3.5"},
Conditions: discovery.EndpointConditions{
Ready: pointer.Bool(false),
Serving: pointer.Bool(false),
Terminating: pointer.Bool(true),
},
NodeName: pointer.String("node-1"),
TargetRef: &v1.ObjectReference{
Kind: "Pod",
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
},
},
},
}
for _, testCase := range testCases {
t.Run(testCase.name, func(t *testing.T) {
endpoint := podToEndpoint(testCase.pod, testCase.node, testCase.svc, discovery.AddressTypeIPv4)
if !reflect.DeepEqual(testCase.expectedEndpoint, endpoint) {
t.Errorf("Expected endpoint: %+v, got: %+v", testCase.expectedEndpoint, endpoint)
}
})
}
}
func TestServiceControllerKey(t *testing.T) {
testCases := map[string]struct {
endpointSlice *discovery.EndpointSlice
expectedKey string
expectedErr error
}{
"nil EndpointSlice": {
endpointSlice: nil,
expectedKey: "",
expectedErr: fmt.Errorf("nil EndpointSlice passed to ServiceControllerKey()"),
},
"empty EndpointSlice": {
endpointSlice: &discovery.EndpointSlice{},
expectedKey: "",
expectedErr: fmt.Errorf("EndpointSlice missing kubernetes.io/service-name label"),
},
"valid EndpointSlice": {
endpointSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Namespace: "ns",
Labels: map[string]string{
discovery.LabelServiceName: "svc",
},
},
},
expectedKey: "ns/svc",
expectedErr: nil,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
actualKey, actualErr := ServiceControllerKey(tc.endpointSlice)
if !reflect.DeepEqual(actualErr, tc.expectedErr) {
t.Errorf("Expected %s, got %s", tc.expectedErr, actualErr)
}
if actualKey != tc.expectedKey {
t.Errorf("Expected %s, got %s", tc.expectedKey, actualKey)
}
})
}
}
func TestGetEndpointPorts(t *testing.T) {
protoTCP := v1.ProtocolTCP
restartPolicyAlways := v1.ContainerRestartPolicyAlways
testCases := map[string]struct {
service *v1.Service
pod *v1.Pod
expectedPorts []*discovery.EndpointPort
}{
"service with AppProtocol on one port": {
service: &v1.Service{
Spec: v1.ServiceSpec{
Ports: []v1.ServicePort{{
Name: "http",
Port: 80,
TargetPort: intstr.FromInt32(80),
Protocol: protoTCP,
AppProtocol: pointer.String("example.com/custom-protocol"),
}},
},
},
pod: &v1.Pod{
Spec: v1.PodSpec{
Containers: []v1.Container{{
Ports: []v1.ContainerPort{},
}},
},
},
expectedPorts: []*discovery.EndpointPort{{
Name: pointer.String("http"),
Port: pointer.Int32(80),
Protocol: &protoTCP,
AppProtocol: pointer.String("example.com/custom-protocol"),
}},
},
"service with named port and AppProtocol on one port": {
service: &v1.Service{
Spec: v1.ServiceSpec{
Ports: []v1.ServicePort{{
Name: "http",
Port: 80,
TargetPort: intstr.FromInt32(80),
Protocol: protoTCP,
}, {
Name: "https",
Protocol: protoTCP,
TargetPort: intstr.FromString("https"),
AppProtocol: pointer.String("https"),
}},
},
},
pod: &v1.Pod{
Spec: v1.PodSpec{
Containers: []v1.Container{{
Ports: []v1.ContainerPort{{
Name: "https",
ContainerPort: int32(443),
Protocol: protoTCP,
}},
}},
},
},
expectedPorts: []*discovery.EndpointPort{{
Name: pointer.String("http"),
Port: pointer.Int32(80),
Protocol: &protoTCP,
}, {
Name: pointer.String("https"),
Port: pointer.Int32(443),
Protocol: &protoTCP,
AppProtocol: pointer.String("https"),
}},
},
"service with named port for restartable init container": {
service: &v1.Service{
Spec: v1.ServiceSpec{
Ports: []v1.ServicePort{{
Name: "http-sidecar",
Port: 8080,
TargetPort: intstr.FromInt32(8080),
Protocol: protoTCP,
}, {
Name: "http",
Port: 8090,
TargetPort: intstr.FromString("http"),
Protocol: protoTCP,
}},
},
},
pod: &v1.Pod{
Spec: v1.PodSpec{
InitContainers: []v1.Container{{
Ports: []v1.ContainerPort{{
Name: "http-sidecar",
ContainerPort: int32(8080),
Protocol: protoTCP,
}},
RestartPolicy: &restartPolicyAlways,
}},
Containers: []v1.Container{{
Ports: []v1.ContainerPort{{
Name: "http",
ContainerPort: int32(8090),
Protocol: protoTCP,
}},
}},
},
},
expectedPorts: []*discovery.EndpointPort{{
Name: pointer.String("http-sidecar"),
Port: pointer.Int32(8080),
Protocol: &protoTCP,
}, {
Name: pointer.String("http"),
Port: pointer.Int32(8090),
Protocol: &protoTCP,
}},
},
"service with same named port for regular and restartable init container": {
service: &v1.Service{
Spec: v1.ServiceSpec{
Ports: []v1.ServicePort{
{
Name: "http",
Port: 80,
TargetPort: intstr.FromString("http"),
Protocol: protoTCP,
}},
},
},
pod: &v1.Pod{
Spec: v1.PodSpec{
InitContainers: []v1.Container{{
Ports: []v1.ContainerPort{{
Name: "http",
ContainerPort: int32(8080),
Protocol: protoTCP,
}},
RestartPolicy: &restartPolicyAlways,
}},
Containers: []v1.Container{{
Ports: []v1.ContainerPort{{
Name: "http",
ContainerPort: int32(8090),
Protocol: protoTCP,
}},
}},
},
},
expectedPorts: []*discovery.EndpointPort{{
Name: pointer.String("http"),
Port: pointer.Int32(8090),
Protocol: &protoTCP,
}},
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
logger, _ := ktesting.NewTestContext(t)
actualPorts := getEndpointPorts(logger, tc.service, tc.pod)
if len(actualPorts) != len(tc.expectedPorts) {
t.Fatalf("Expected %d ports, got %d", len(tc.expectedPorts), len(actualPorts))
}
for i, actualPort := range actualPorts {
if !reflect.DeepEqual(&actualPort, tc.expectedPorts[i]) {
t.Errorf("Expected port: %+v, got %+v", tc.expectedPorts[i], &actualPort)
}
}
})
}
}
func TestSetEndpointSliceLabels(t *testing.T) {
service := v1.Service{
ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "test"},
Spec: v1.ServiceSpec{
Ports: []v1.ServicePort{{Port: 80}},
Selector: map[string]string{"foo": "bar"},
ClusterIP: "1.1.1.1",
},
}
testCases := []struct {
name string
epSlice *discovery.EndpointSlice
updateSvc func(svc v1.Service) v1.Service // given basic valid services, each test case can customize them
expectedLabels map[string]string
expectedUpdate bool
}{
{
name: "Service without labels and empty endpoint slice",
epSlice: &discovery.EndpointSlice{},
updateSvc: func(svc v1.Service) v1.Service {
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
expectedUpdate: false,
},
{
name: "Headless service with labels and empty endpoint slice",
epSlice: &discovery.EndpointSlice{},
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{"foo": "bar"}
svc.Spec.ClusterIP = v1.ClusterIPNone
svc.Labels = labels
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
v1.IsHeadlessService: "",
"foo": "bar",
},
expectedUpdate: true,
},
{
name: "Headless service without labels and empty endpoint slice",
epSlice: &discovery.EndpointSlice{},
updateSvc: func(svc v1.Service) v1.Service {
svc.Spec.ClusterIP = v1.ClusterIPNone
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
v1.IsHeadlessService: "",
},
expectedUpdate: false,
},
{
name: "Non Headless service with Headless label and empty endpoint slice",
epSlice: &discovery.EndpointSlice{},
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{v1.IsHeadlessService: ""}
svc.Labels = labels
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
expectedUpdate: false,
},
{
name: "Headless Service change to ClusterIP Service with headless label",
epSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
v1.IsHeadlessService: "",
},
},
},
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{v1.IsHeadlessService: ""}
svc.Labels = labels
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
expectedUpdate: false,
},
{
name: "Headless Service change to ClusterIP Service",
epSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
v1.IsHeadlessService: "",
},
},
},
updateSvc: func(svc v1.Service) v1.Service {
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
expectedUpdate: false,
},
{
name: "Headless service and endpoint slice with same labels",
epSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
"foo": "bar",
},
},
}, updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{"foo": "bar"}
svc.Spec.ClusterIP = v1.ClusterIPNone
svc.Labels = labels
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
v1.IsHeadlessService: "",
"foo": "bar",
},
expectedUpdate: false,
},
{
name: "Service with labels and empty endpoint slice",
epSlice: &discovery.EndpointSlice{},
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{"foo": "bar"}
svc.Labels = labels
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
"foo": "bar",
},
expectedUpdate: true,
},
{
name: "Slice with labels and service without labels",
epSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
"foo": "bar",
},
},
},
updateSvc: func(svc v1.Service) v1.Service {
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
expectedUpdate: true,
},
{
name: "Slice with headless label and service with ClusterIP",
epSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
v1.IsHeadlessService: "",
},
},
},
updateSvc: func(svc v1.Service) v1.Service {
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
expectedUpdate: false,
},
{
name: "Slice with reserved labels and service with labels",
epSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
},
},
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{"foo": "bar"}
svc.Labels = labels
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
"foo": "bar",
},
expectedUpdate: true,
},
{
name: "Evil service trying to hijack slice labels only well-known slice labels",
epSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
},
},
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{
discovery.LabelServiceName: "bad",
discovery.LabelManagedBy: "actor",
v1.IsHeadlessService: "invalid",
}
svc.Labels = labels
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
expectedUpdate: false,
},
{
name: "Evil service trying to hijack slice labels with updates",
epSlice: &discovery.EndpointSlice{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
},
},
},
updateSvc: func(svc v1.Service) v1.Service {
labels := map[string]string{
discovery.LabelServiceName: "bad",
discovery.LabelManagedBy: "actor",
"foo": "bar",
}
svc.Labels = labels
return svc
},
expectedLabels: map[string]string{
discovery.LabelServiceName: service.Name,
discovery.LabelManagedBy: controllerName,
"foo": "bar",
},
expectedUpdate: true,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
logger, _ := ktesting.NewTestContext(t)
svc := tc.updateSvc(service)
labels, updated := setEndpointSliceLabels(logger, tc.epSlice, &svc, controllerName)
assert.EqualValues(t, tc.expectedUpdate, updated)
assert.EqualValues(t, tc.expectedLabels, labels)
})
}
}
// Test helpers
func newPod(n int, namespace string, ready bool, nPorts int, terminating bool) *v1.Pod {
status := v1.ConditionTrue
if !ready {
status = v1.ConditionFalse
}
var deletionTimestamp *metav1.Time
if terminating {
deletionTimestamp = &metav1.Time{
Time: time.Now(),
}
}
p := &v1.Pod{
TypeMeta: metav1.TypeMeta{APIVersion: "v1"},
ObjectMeta: metav1.ObjectMeta{
Namespace: namespace,
Name: fmt.Sprintf("pod%d", n),
Labels: map[string]string{"foo": "bar"},
DeletionTimestamp: deletionTimestamp,
ResourceVersion: fmt.Sprint(n),
},
Spec: v1.PodSpec{
Containers: []v1.Container{{
Name: "container-1",