445 lines
15 KiB
Go
445 lines
15 KiB
Go
// Copyright 2020-2021 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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package issuerconfig
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import (
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"context"
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"errors"
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"testing"
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"time"
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"github.com/sclevine/spec"
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"github.com/sclevine/spec/report"
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"github.com/stretchr/testify/require"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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kubeinformers "k8s.io/client-go/informers"
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kubernetesfake "k8s.io/client-go/kubernetes/fake"
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coretesting "k8s.io/client-go/testing"
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configv1alpha1 "go.pinniped.dev/generated/1.20/apis/concierge/config/v1alpha1"
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pinnipedfake "go.pinniped.dev/generated/1.20/client/concierge/clientset/versioned/fake"
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"go.pinniped.dev/internal/controllerlib"
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"go.pinniped.dev/internal/here"
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"go.pinniped.dev/internal/testutil"
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)
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func TestInformerFilters(t *testing.T) {
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spec.Run(t, "informer filters", func(t *testing.T, when spec.G, it spec.S) {
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const credentialIssuerResourceName = "some-resource-name"
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var r *require.Assertions
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var observableWithInformerOption *testutil.ObservableWithInformerOption
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var configMapInformerFilter controllerlib.Filter
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it.Before(func() {
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r = require.New(t)
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observableWithInformerOption = testutil.NewObservableWithInformerOption()
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configMapInformer := kubeinformers.NewSharedInformerFactory(nil, 0).Core().V1().ConfigMaps()
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_ = NewKubeConfigInfoPublisherController(
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credentialIssuerResourceName,
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map[string]string{},
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nil,
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nil,
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configMapInformer,
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observableWithInformerOption.WithInformer, // make it possible to observe the behavior of the Filters
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)
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configMapInformerFilter = observableWithInformerOption.GetFilterForInformer(configMapInformer)
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})
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when("watching ConfigMap objects", func() {
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var subject controllerlib.Filter
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var target, wrongNamespace, wrongName, unrelated *corev1.ConfigMap
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it.Before(func() {
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subject = configMapInformerFilter
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target = &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: "cluster-info", Namespace: "kube-public"}}
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wrongNamespace = &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: "cluster-info", Namespace: "wrong-namespace"}}
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wrongName = &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: "kube-public"}}
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unrelated = &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: "wrong-namespace"}}
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})
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when("the target ConfigMap changes", func() {
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it("returns true to trigger the sync method", func() {
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r.True(subject.Add(target))
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r.True(subject.Update(target, unrelated))
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r.True(subject.Update(unrelated, target))
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r.True(subject.Delete(target))
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})
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})
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when("a ConfigMap from another namespace changes", func() {
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it("returns false to avoid triggering the sync method", func() {
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r.False(subject.Add(wrongNamespace))
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r.False(subject.Update(wrongNamespace, unrelated))
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r.False(subject.Update(unrelated, wrongNamespace))
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r.False(subject.Delete(wrongNamespace))
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})
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})
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when("a ConfigMap with a different name changes", func() {
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it("returns false to avoid triggering the sync method", func() {
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r.False(subject.Add(wrongName))
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r.False(subject.Update(wrongName, unrelated))
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r.False(subject.Update(unrelated, wrongName))
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r.False(subject.Delete(wrongName))
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})
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})
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when("a ConfigMap with a different name and a different namespace changes", func() {
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it("returns false to avoid triggering the sync method", func() {
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r.False(subject.Add(unrelated))
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r.False(subject.Update(unrelated, unrelated))
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r.False(subject.Delete(unrelated))
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})
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})
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})
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}, spec.Parallel(), spec.Report(report.Terminal{}))
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}
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func TestSync(t *testing.T) {
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spec.Run(t, "Sync", func(t *testing.T, when spec.G, it spec.S) {
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const credentialIssuerResourceName = "some-resource-name"
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var r *require.Assertions
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var subject controllerlib.Controller
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var serverOverride *string
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var kubeInformerClient *kubernetesfake.Clientset
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var kubeInformers kubeinformers.SharedInformerFactory
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var pinnipedAPIClient *pinnipedfake.Clientset
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var timeoutContext context.Context
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var timeoutContextCancel context.CancelFunc
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var syncContext *controllerlib.Context
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var expectedCredentialIssuer = func(expectedServerURL, expectedCAData string) (schema.GroupVersionResource, *configv1alpha1.CredentialIssuer, *configv1alpha1.CredentialIssuer) {
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expectedCredentialIssuerGVR := schema.GroupVersionResource{
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Group: configv1alpha1.GroupName,
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Version: "v1alpha1",
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Resource: "credentialissuers",
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}
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expectedCreateCredentialIssuer := &configv1alpha1.CredentialIssuer{
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ObjectMeta: metav1.ObjectMeta{
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Name: credentialIssuerResourceName,
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Labels: map[string]string{
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"myLabelKey1": "myLabelValue1",
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"myLabelKey2": "myLabelValue2",
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},
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},
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}
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expectedCredentialIssuer := &configv1alpha1.CredentialIssuer{
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ObjectMeta: metav1.ObjectMeta{
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Name: credentialIssuerResourceName,
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Labels: map[string]string{
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"myLabelKey1": "myLabelValue1",
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"myLabelKey2": "myLabelValue2",
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},
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},
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Status: configv1alpha1.CredentialIssuerStatus{
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KubeConfigInfo: &configv1alpha1.CredentialIssuerKubeConfigInfo{
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Server: expectedServerURL,
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CertificateAuthorityData: expectedCAData,
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},
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},
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}
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return expectedCredentialIssuerGVR, expectedCreateCredentialIssuer, expectedCredentialIssuer
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}
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// Defer starting the informers until the last possible moment so that the
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// nested Before's can keep adding things to the informer caches.
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var startInformersAndController = func() {
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// Set this at the last second to allow for injection of server override.
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subject = NewKubeConfigInfoPublisherController(
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credentialIssuerResourceName,
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map[string]string{
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"myLabelKey1": "myLabelValue1",
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"myLabelKey2": "myLabelValue2",
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},
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serverOverride,
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pinnipedAPIClient,
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kubeInformers.Core().V1().ConfigMaps(),
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controllerlib.WithInformer,
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)
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// Set this at the last second to support calling subject.Name().
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syncContext = &controllerlib.Context{
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Context: timeoutContext,
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Name: subject.Name(),
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Key: controllerlib.Key{
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Namespace: "kube-public",
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Name: "cluster-info",
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},
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}
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// Must start informers before calling TestRunSynchronously()
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kubeInformers.Start(timeoutContext.Done())
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controllerlib.TestRunSynchronously(t, subject)
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}
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it.Before(func() {
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r = require.New(t)
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timeoutContext, timeoutContextCancel = context.WithTimeout(context.Background(), time.Second*3)
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kubeInformerClient = kubernetesfake.NewSimpleClientset()
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kubeInformers = kubeinformers.NewSharedInformerFactory(kubeInformerClient, 0)
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pinnipedAPIClient = pinnipedfake.NewSimpleClientset()
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})
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it.After(func() {
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timeoutContextCancel()
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})
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when("there is a cluster-info ConfigMap in the kube-public namespace", func() {
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const caData = "c29tZS1jZXJ0aWZpY2F0ZS1hdXRob3JpdHktZGF0YQo=" // "some-certificate-authority-data" base64 encoded
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const kubeServerURL = "https://some-server"
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when("the ConfigMap has the expected `kubeconfig` top-level data key", func() {
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it.Before(func() {
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clusterInfoConfigMap := &corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{Name: "cluster-info", Namespace: "kube-public"},
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// Note that go fmt puts tabs in our file, which we must remove from our configmap yaml below.
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Data: map[string]string{
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"kubeconfig": here.Docf(`
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kind: Config
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apiVersion: v1
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clusters:
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- name: ""
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cluster:
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certificate-authority-data: "%s"
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server: "%s"`,
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caData, kubeServerURL),
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"uninteresting-key": "uninteresting-value",
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},
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}
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err := kubeInformerClient.Tracker().Add(clusterInfoConfigMap)
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r.NoError(err)
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})
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when("the CredentialIssuer does not already exist", func() {
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it("creates a CredentialIssuer", func() {
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startInformersAndController()
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err := controllerlib.TestSync(t, subject, *syncContext)
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r.NoError(err)
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expectedCredentialIssuerGVR, expectedCreateCredentialIssuer, expectedCredentialIssuer := expectedCredentialIssuer(
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kubeServerURL,
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caData,
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)
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r.Equal(
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[]coretesting.Action{
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coretesting.NewRootGetAction(expectedCredentialIssuerGVR, expectedCreateCredentialIssuer.Name),
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coretesting.NewRootCreateAction(
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expectedCredentialIssuerGVR,
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expectedCreateCredentialIssuer,
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),
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coretesting.NewRootUpdateSubresourceAction(
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expectedCredentialIssuerGVR,
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"status",
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expectedCredentialIssuer,
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),
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},
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pinnipedAPIClient.Actions(),
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)
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})
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when("creating the CredentialIssuer fails", func() {
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it.Before(func() {
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pinnipedAPIClient.PrependReactor(
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"create",
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"credentialissuers",
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func(_ coretesting.Action) (bool, runtime.Object, error) {
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return true, nil, errors.New("create failed")
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},
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)
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})
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it("returns the create error", func() {
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startInformersAndController()
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err := controllerlib.TestSync(t, subject, *syncContext)
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r.EqualError(err, "could not create or update credentialissuer: create failed: create failed")
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})
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})
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when("a server override is passed to the controller", func() {
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it("uses the server override field", func() {
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serverOverride = new(string)
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*serverOverride = "https://some-server-override"
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startInformersAndController()
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err := controllerlib.TestSync(t, subject, *syncContext)
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r.NoError(err)
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expectedCredentialIssuerGVR, expectedCreateCredentialIssuer, expectedCredentialIssuer := expectedCredentialIssuer(
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kubeServerURL,
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caData,
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)
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expectedCredentialIssuer.Status.KubeConfigInfo.Server = "https://some-server-override"
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r.Equal(
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[]coretesting.Action{
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coretesting.NewRootGetAction(expectedCredentialIssuerGVR, expectedCreateCredentialIssuer.Name),
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coretesting.NewRootCreateAction(
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expectedCredentialIssuerGVR,
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expectedCreateCredentialIssuer,
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),
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coretesting.NewRootUpdateSubresourceAction(
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expectedCredentialIssuerGVR,
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"status",
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expectedCredentialIssuer,
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),
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},
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pinnipedAPIClient.Actions(),
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)
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})
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})
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})
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when("the CredentialIssuer already exists", func() {
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when("the CredentialIssuer is already up to date according to the data in the ConfigMap", func() {
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var credentialIssuerGVR schema.GroupVersionResource
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var credentialIssuer *configv1alpha1.CredentialIssuer
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it.Before(func() {
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credentialIssuerGVR, _, credentialIssuer = expectedCredentialIssuer(
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kubeServerURL,
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caData,
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)
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err := pinnipedAPIClient.Tracker().Add(credentialIssuer)
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r.NoError(err)
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})
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it("does not update the CredentialIssuer to avoid unnecessary etcd writes/api calls", func() {
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startInformersAndController()
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err := controllerlib.TestSync(t, subject, *syncContext)
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r.NoError(err)
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r.Equal(
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[]coretesting.Action{
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coretesting.NewRootGetAction(credentialIssuerGVR, credentialIssuer.Name),
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},
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pinnipedAPIClient.Actions(),
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)
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})
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})
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when("the CredentialIssuer is stale compared to the data in the ConfigMap", func() {
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it.Before(func() {
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_, _, expectedCredentialIssuer := expectedCredentialIssuer(
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kubeServerURL,
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caData,
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)
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expectedCredentialIssuer.Status.KubeConfigInfo.Server = "https://some-other-server"
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r.NoError(pinnipedAPIClient.Tracker().Add(expectedCredentialIssuer))
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})
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it("updates the existing CredentialIssuer", func() {
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startInformersAndController()
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err := controllerlib.TestSync(t, subject, *syncContext)
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r.NoError(err)
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expectedCredentialIssuerGVR, _, expectedCredentialIssuer := expectedCredentialIssuer(
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kubeServerURL,
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caData,
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)
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expectedActions := []coretesting.Action{
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coretesting.NewRootGetAction(expectedCredentialIssuerGVR, expectedCredentialIssuer.Name),
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coretesting.NewRootUpdateSubresourceAction(
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expectedCredentialIssuerGVR,
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"status",
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expectedCredentialIssuer,
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),
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}
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r.Equal(expectedActions, pinnipedAPIClient.Actions())
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})
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when("updating the CredentialIssuer fails", func() {
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it.Before(func() {
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pinnipedAPIClient.PrependReactor(
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"update",
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"credentialissuers",
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func(_ coretesting.Action) (bool, runtime.Object, error) {
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return true, nil, errors.New("update failed")
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},
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)
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})
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it("returns the update error", func() {
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startInformersAndController()
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err := controllerlib.TestSync(t, subject, *syncContext)
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r.EqualError(err, "could not create or update credentialissuer: update failed")
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})
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})
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})
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})
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})
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when("the ConfigMap is missing the expected `kubeconfig` top-level data key", func() {
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it.Before(func() {
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clusterInfoConfigMap := &corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{Name: "cluster-info", Namespace: "kube-public"},
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Data: map[string]string{
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"these are not the droids you're looking for": "uninteresting-value",
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},
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}
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err := kubeInformerClient.Tracker().Add(clusterInfoConfigMap)
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r.NoError(err)
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})
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it("keeps waiting for it to exist", func() {
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startInformersAndController()
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err := controllerlib.TestSync(t, subject, *syncContext)
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r.NoError(err)
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r.Empty(pinnipedAPIClient.Actions())
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})
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})
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when("the ConfigMap does not have a valid kubeconfig", func() {
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it.Before(func() {
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clusterInfoConfigMap := &corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{Name: "cluster-info", Namespace: "kube-public"},
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Data: map[string]string{
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"kubeconfig": "this is an invalid kubeconfig",
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},
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}
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err := kubeInformerClient.Tracker().Add(clusterInfoConfigMap)
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r.NoError(err)
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})
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it("keeps waiting for it to be properly formatted", func() {
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startInformersAndController()
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err := controllerlib.TestSync(t, subject, *syncContext)
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r.NoError(err)
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r.Empty(pinnipedAPIClient.Actions())
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})
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})
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})
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when("there is not a cluster-info ConfigMap in the kube-public namespace", func() {
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it.Before(func() {
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unrelatedConfigMap := &corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{
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Name: "oops this is not the cluster-info ConfigMap",
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Namespace: "kube-public",
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},
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}
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err := kubeInformerClient.Tracker().Add(unrelatedConfigMap)
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r.NoError(err)
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})
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it("keeps waiting for one", func() {
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startInformersAndController()
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err := controllerlib.TestSync(t, subject, *syncContext)
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r.NoError(err)
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r.Empty(pinnipedAPIClient.Actions())
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})
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})
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}, spec.Parallel(), spec.Report(report.Terminal{}))
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}
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