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/*
Copyright 2020 The Flux 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 controller
import (
"context"
"fmt"
"sync"
"testing"
"time"
"github.com/stretchr/testify/require"
"go.uber.org/zap"
appsv1 "k8s.io/api/apps/v1"
hpav2 "k8s.io/api/autoscaling/v2beta2"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/fake"
"k8s.io/client-go/tools/record"
"k8s.io/client-go/util/workqueue"
flaggerv1 "github.com/fluxcd/flagger/pkg/apis/flagger/v1beta1"
istiov1alpha1 "github.com/fluxcd/flagger/pkg/apis/istio/common/v1alpha1"
istiov1alpha3 "github.com/fluxcd/flagger/pkg/apis/istio/v1alpha3"
"github.com/fluxcd/flagger/pkg/canary"
clientset "github.com/fluxcd/flagger/pkg/client/clientset/versioned"
fakeFlagger "github.com/fluxcd/flagger/pkg/client/clientset/versioned/fake"
informers "github.com/fluxcd/flagger/pkg/client/informers/externalversions"
"github.com/fluxcd/flagger/pkg/logger"
"github.com/fluxcd/flagger/pkg/metrics"
"github.com/fluxcd/flagger/pkg/metrics/observers"
"github.com/fluxcd/flagger/pkg/notifier"
"github.com/fluxcd/flagger/pkg/router"
)
type fixture struct {
canary *flaggerv1.Canary
kubeClient kubernetes.Interface
meshClient clientset.Interface
flaggerClient clientset.Interface
deployer canary.Controller
ctrl *Controller
logger *zap.SugaredLogger
router router.Interface
}
func (f fixture) makePrimaryReady(t *testing.T) {
primaryName := fmt.Sprintf("%s-primary", f.canary.Spec.TargetRef.Name)
f.makeReady(t, primaryName)
}
func (f fixture) makeCanaryReady(t *testing.T) {
f.makeReady(t, f.canary.Spec.TargetRef.Name)
}
func (f fixture) makeReady(t *testing.T, name string) {
p, err := f.kubeClient.AppsV1().
Deployments("default").
Get(context.TODO(), name, metav1.GetOptions{})
require.NoError(t, err)
p.Status = appsv1.DeploymentStatus{Replicas: 1, UpdatedReplicas: 1,
ReadyReplicas: 1, AvailableReplicas: 1}
_, err = f.kubeClient.AppsV1().Deployments("default").Update(context.TODO(), p, metav1.UpdateOptions{})
require.NoError(t, err)
}
func newDeploymentFixture(c *flaggerv1.Canary) fixture {
if c == nil {
c = newDeploymentTestCanary()
}
// init Flagger clientset and register objects
flaggerClient := fakeFlagger.NewSimpleClientset(
c,
newDeploymentTestMetricTemplate(),
newDeploymentTestAlertProvider(),
)
// init Kubernetes clientset and register objects
kubeClient := fake.NewSimpleClientset(
newDeploymentTestDeployment(),
newDeploymentTestService(),
newDeploymentTestHPA(),
newDeploymentTestConfigMap(),
newDeploymentTestConfigMapEnv(),
newDeploymentTestConfigMapVol(),
newDeploymentTestSecret(),
newDeploymentTestSecretEnv(),
newDeploymentTestSecretVol(),
newDeploymentTestAlertProviderSecret(),
)
logger, _ := logger.NewLogger("debug")
// init controller
flaggerInformerFactory := informers.NewSharedInformerFactory(flaggerClient, 0)
fi := Informers{
CanaryInformer: flaggerInformerFactory.Flagger().V1beta1().Canaries(),
MetricInformer: flaggerInformerFactory.Flagger().V1beta1().MetricTemplates(),
AlertInformer: flaggerInformerFactory.Flagger().V1beta1().AlertProviders(),
}
// init router
rf := router.NewFactory(nil, kubeClient, flaggerClient, "annotationsPrefix", "", logger, flaggerClient, true)
// init observer
observerFactory, _ := observers.NewFactory(testMetricsServerURL)
// init canary factory
configTracker := &canary.ConfigTracker{
Logger: logger,
KubeClient: kubeClient,
FlaggerClient: flaggerClient,
}
canaryFactory := canary.NewFactory(kubeClient, flaggerClient, configTracker, []string{"app", "name"}, []string{""}, logger)
ctrl := &Controller{
kubeClient: kubeClient,
flaggerClient: flaggerClient,
flaggerInformers: fi,
flaggerSynced: fi.CanaryInformer.Informer().HasSynced,
workqueue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), controllerAgentName),
eventRecorder: &record.FakeRecorder{},
logger: logger,
canaries: new(sync.Map),
flaggerWindow: time.Second,
canaryFactory: canaryFactory,
observerFactory: observerFactory,
recorder: metrics.NewRecorder(controllerAgentName, false),
routerFactory: rf,
notifier: &notifier.NopNotifier{},
}
ctrl.flaggerSynced = alwaysReady
ctrl.flaggerInformers.CanaryInformer.Informer().GetIndexer().Add(c)
ctrl.flaggerInformers.MetricInformer.Informer().GetIndexer().Add(newDeploymentTestMetricTemplate())
ctrl.flaggerInformers.AlertInformer.Informer().GetIndexer().Add(newDeploymentTestAlertProvider())
meshRouter := rf.MeshRouter("istio", "")
return fixture{
canary: c,
deployer: canaryFactory.Controller("Deployment"),
logger: logger,
flaggerClient: flaggerClient,
meshClient: flaggerClient,
kubeClient: kubeClient,
ctrl: ctrl,
router: meshRouter,
}
}
func newDeploymentTestConfigMap() *corev1.ConfigMap {
return &corev1.ConfigMap{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo-config-env",
},
Data: map[string]string{
"color": "red",
},
}
}
func newDeploymentTestConfigMapV2() *corev1.ConfigMap {
return &corev1.ConfigMap{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo-config-env",
},
Data: map[string]string{
"color": "blue",
"output": "console",
},
}
}
func newDeploymentTestConfigMapEnv() *corev1.ConfigMap {
return &corev1.ConfigMap{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo-config-all-env",
},
Data: map[string]string{
"color": "red",
},
}
}
func newDeploymentTestConfigMapVol() *corev1.ConfigMap {
return &corev1.ConfigMap{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo-config-vol",
},
Data: map[string]string{
"color": "red",
},
}
}
func newDeploymentTestSecret() *corev1.Secret {
return &corev1.Secret{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo-secret-env",
},
Type: corev1.SecretTypeOpaque,
Data: map[string][]byte{
"apiKey": []byte("test"),
"username": []byte("test"),
"password": []byte("test"),
},
}
}
func newDeploymentTestSecretV2() *corev1.Secret {
return &corev1.Secret{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo-secret-env",
},
Type: corev1.SecretTypeOpaque,
Data: map[string][]byte{
"apiKey": []byte("test2"),
"username": []byte("test"),
"password": []byte("test"),
},
}
}
func newDeploymentTestSecretEnv() *corev1.Secret {
return &corev1.Secret{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo-secret-all-env",
},
Type: corev1.SecretTypeOpaque,
Data: map[string][]byte{
"apiKey": []byte("test"),
},
}
}
func newDeploymentTestSecretVol() *corev1.Secret {
return &corev1.Secret{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo-secret-vol",
},
Type: corev1.SecretTypeOpaque,
Data: map[string][]byte{
"apiKey": []byte("test"),
},
}
}
func newDeploymentTestCanary() *flaggerv1.Canary {
cd := &flaggerv1.Canary{
TypeMeta: metav1.TypeMeta{APIVersion: flaggerv1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo",
},
Spec: flaggerv1.CanarySpec{
TargetRef: flaggerv1.LocalObjectReference{
Name: "podinfo",
APIVersion: "apps/v1",
Kind: "Deployment",
},
AutoscalerRef: &flaggerv1.AutoscalerRefernce{
Name: "podinfo",
APIVersion: "autoscaling/v2beta2",
Kind: "HorizontalPodAutoscaler",
}, Service: flaggerv1.CanaryService{
Port: 9898,
}, Analysis: &flaggerv1.CanaryAnalysis{
Threshold: 10,
StepWeight: 10,
MaxWeight: 50,
Metrics: []flaggerv1.CanaryMetric{
{
Name: "request-success-rate",
Threshold: 99,
Interval: "1m",
},
{
Name: "request-duration",
ThresholdRange: &flaggerv1.CanaryThresholdRange{
Min: toFloatPtr(0),
Max: toFloatPtr(500000),
},
Interval: "1m",
},
{
Name: "custom",
ThresholdRange: &flaggerv1.CanaryThresholdRange{
Min: toFloatPtr(0),
Max: toFloatPtr(100),
},
Interval: "1m",
TemplateRef: &flaggerv1.CrossNamespaceObjectReference{
Name: "envoy",
Namespace: "default",
},
},
},
},
},
}
return cd
}
func newDeploymentTestCanaryMirror() *flaggerv1.Canary {
cd := newDeploymentTestCanary()
cd.Spec.Analysis.Mirror = true
return cd
}
func newDeploymentTestCanaryAB() *flaggerv1.Canary {
cd := &flaggerv1.Canary{
TypeMeta: metav1.TypeMeta{APIVersion: flaggerv1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo",
},
Spec: flaggerv1.CanarySpec{
TargetRef: flaggerv1.LocalObjectReference{
Name: "podinfo",
APIVersion: "apps/v1",
Kind: "Deployment",
},
AutoscalerRef: &flaggerv1.AutoscalerRefernce{
Name: "podinfo",
APIVersion: "autoscaling/v2beta2",
Kind: "HorizontalPodAutoscaler",
}, Service: flaggerv1.CanaryService{
Port: 9898,
}, Analysis: &flaggerv1.CanaryAnalysis{
Threshold: 10,
Iterations: 10,
Match: []istiov1alpha3.HTTPMatchRequest{
{
Headers: map[string]istiov1alpha1.StringMatch{
"x-user-type": {
Exact: "test",
},
},
},
},
Metrics: []flaggerv1.CanaryMetric{
{
Name: "request-success-rate",
ThresholdRange: &flaggerv1.CanaryThresholdRange{
Min: toFloatPtr(99),
Max: toFloatPtr(100),
},
Interval: "1m",
},
{
Name: "request-duration",
Threshold: 500000,
Interval: "1m",
},
{
Name: "custom",
ThresholdRange: &flaggerv1.CanaryThresholdRange{
Min: toFloatPtr(0),
Max: toFloatPtr(500000),
},
Interval: "1m",
Query: "fake",
},
},
},
},
}
return cd
}
func newDeploymentTestDeployment() *appsv1.Deployment {
d := &appsv1.Deployment{
TypeMeta: metav1.TypeMeta{APIVersion: appsv1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo",
},
Spec: appsv1.DeploymentSpec{
Selector: &metav1.LabelSelector{
MatchLabels: map[string]string{
"app": "podinfo",
},
},
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"app": "podinfo",
},
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "podinfo",
Image: "quay.io/stefanprodan/podinfo:1.2.0",
Command: []string{
"./podinfo",
"--port=9898",
},
Args: nil,
WorkingDir: "",
Ports: []corev1.ContainerPort{
{
Name: "http",
ContainerPort: 9898,
Protocol: corev1.ProtocolTCP,
},
{
Name: "http-metrics",
ContainerPort: 8080,
Protocol: corev1.ProtocolTCP,
},
{
ContainerPort: 8888,
},
},
Env: []corev1.EnvVar{
{
Name: "PODINFO_UI_COLOR",
ValueFrom: &corev1.EnvVarSource{
ConfigMapKeyRef: &corev1.ConfigMapKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: "podinfo-config-env",
},
Key: "color",
},
},
},
{
Name: "API_KEY",
ValueFrom: &corev1.EnvVarSource{
SecretKeyRef: &corev1.SecretKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: "podinfo-secret-env",
},
Key: "apiKey",
},
},
},
},
EnvFrom: []corev1.EnvFromSource{
{
ConfigMapRef: &corev1.ConfigMapEnvSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: "podinfo-config-all-env",
},
},
},
{
SecretRef: &corev1.SecretEnvSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: "podinfo-secret-all-env",
},
},
},
},
VolumeMounts: []corev1.VolumeMount{
{
Name: "config",
MountPath: "/etc/podinfo/config",
ReadOnly: true,
},
{
Name: "secret",
MountPath: "/etc/podinfo/secret",
ReadOnly: true,
},
},
},
},
Volumes: []corev1.Volume{
{
Name: "config",
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: "podinfo-config-vol",
},
},
},
},
{
Name: "secret",
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: "podinfo-secret-vol",
},
},
},
},
},
},
},
}
return d
}
func newDeploymentTestDeploymentV2() *appsv1.Deployment {
d := &appsv1.Deployment{
TypeMeta: metav1.TypeMeta{APIVersion: appsv1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo",
},
Spec: appsv1.DeploymentSpec{
Selector: &metav1.LabelSelector{
MatchLabels: map[string]string{
"app": "podinfo",
},
},
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"app": "podinfo",
},
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "podinfo",
Image: "quay.io/stefanprodan/podinfo:1.2.1",
Ports: []corev1.ContainerPort{
{
Name: "http",
ContainerPort: 9898,
Protocol: corev1.ProtocolTCP,
},
},
Command: []string{
"./podinfo",
"--port=9898",
},
Env: []corev1.EnvVar{
{
Name: "PODINFO_UI_COLOR",
ValueFrom: &corev1.EnvVarSource{
ConfigMapKeyRef: &corev1.ConfigMapKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: "podinfo-config-env",
},
Key: "color",
},
},
},
{
Name: "API_KEY",
ValueFrom: &corev1.EnvVarSource{
SecretKeyRef: &corev1.SecretKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: "podinfo-secret-env",
},
Key: "apiKey",
},
},
},
},
EnvFrom: []corev1.EnvFromSource{
{
ConfigMapRef: &corev1.ConfigMapEnvSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: "podinfo-config-all-env",
},
},
},
},
VolumeMounts: []corev1.VolumeMount{
{
Name: "config",
MountPath: "/etc/podinfo/config",
ReadOnly: true,
},
{
Name: "secret",
MountPath: "/etc/podinfo/secret",
ReadOnly: true,
},
},
},
},
Volumes: []corev1.Volume{
{
Name: "config",
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: "podinfo-config-vol",
},
},
},
},
{
Name: "secret",
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: "podinfo-secret-vol",
},
},
},
},
},
},
},
}
return d
}
func newDeploymentTestService() *corev1.Service {
d := &corev1.Service{
TypeMeta: metav1.TypeMeta{APIVersion: appsv1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo",
},
Spec: corev1.ServiceSpec{
Selector: map[string]string{
"app": "podinfo",
},
Type: corev1.ServiceTypeClusterIP,
Ports: []corev1.ServicePort{
{
Name: "http",
Port: 9898,
Protocol: corev1.ProtocolTCP,
TargetPort: intstr.FromString("http"),
},
},
},
}
return d
}
func newDeploymentTestServiceV2() *corev1.Service {
d := &corev1.Service{
TypeMeta: metav1.TypeMeta{APIVersion: appsv1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo",
},
Spec: corev1.ServiceSpec{
Selector: map[string]string{
"app": "podinfo-v2",
},
Type: corev1.ServiceTypeClusterIP,
Ports: []corev1.ServicePort{
{
Name: "http",
Port: 9898,
Protocol: corev1.ProtocolTCP,
TargetPort: intstr.FromString("http"),
},
},
},
}
return d
}
func newDeploymentTestHPA() *hpav2.HorizontalPodAutoscaler {
h := &hpav2.HorizontalPodAutoscaler{
TypeMeta: metav1.TypeMeta{APIVersion: hpav2.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "podinfo",
},
Spec: hpav2.HorizontalPodAutoscalerSpec{
ScaleTargetRef: hpav2.CrossVersionObjectReference{
Name: "podinfo",
APIVersion: "apps/v1",
Kind: "Deployment",
},
Metrics: []hpav2.MetricSpec{
{
Type: "Resource",
Resource: &hpav2.ResourceMetricSource{
Name: "cpu",
Target: hpav2.MetricTarget{
AverageUtilization: int32p(99),
},
},
},
},
},
}
return h
}
func newDeploymentTestMetricTemplate() *flaggerv1.MetricTemplate {
provider := flaggerv1.MetricTemplateProvider{
Type: "prometheus",
Address: testMetricsServerURL,
SecretRef: &corev1.LocalObjectReference{
Name: "podinfo-secret-env",
},
}
template := &flaggerv1.MetricTemplate{
TypeMeta: metav1.TypeMeta{APIVersion: flaggerv1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "envoy",
},
Spec: flaggerv1.MetricTemplateSpec{
Provider: provider,
Query: `sum(envoy_cluster_upstream_rq{envoy_cluster_name=~"{{ namespace }}_{{ target }}"})`,
},
}
return template
}
func newDeploymentTestAlertProviderSecret() *corev1.Secret {
return &corev1.Secret{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "alert-secret",
},
Type: corev1.SecretTypeOpaque,
Data: map[string][]byte{
"address": []byte("http://mock.slack"),
},
}
}
func newDeploymentTestAlertProvider() *flaggerv1.AlertProvider {
return &flaggerv1.AlertProvider{
TypeMeta: metav1.TypeMeta{APIVersion: flaggerv1.SchemeGroupVersion.String()},
ObjectMeta: metav1.ObjectMeta{
Namespace: "default",
Name: "slack",
},
Spec: flaggerv1.AlertProviderSpec{
Type: "slack",
Address: "http://fake.slack",
SecretRef: &corev1.LocalObjectReference{
Name: "alert-secret",
},
},
}
}
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