// Copyright 2021 the Pinniped contributors. All Rights Reserved. // SPDX-License-Identifier: Apache-2.0 package impersonatorconfig import ( "context" "crypto/tls" "crypto/x509" "crypto/x509/pkix" "encoding/base64" "encoding/pem" "errors" "fmt" "io/ioutil" "net" "net/http" "reflect" "regexp" "strings" "testing" "time" "github.com/sclevine/spec" "github.com/sclevine/spec/report" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" corev1 "k8s.io/api/core/v1" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/runtime" "k8s.io/apimachinery/pkg/runtime/schema" "k8s.io/apimachinery/pkg/util/clock" kubeinformers "k8s.io/client-go/informers" kubernetesfake "k8s.io/client-go/kubernetes/fake" coretesting "k8s.io/client-go/testing" "go.pinniped.dev/generated/latest/apis/concierge/config/v1alpha1" pinnipedfake "go.pinniped.dev/generated/latest/client/concierge/clientset/versioned/fake" "go.pinniped.dev/internal/certauthority" "go.pinniped.dev/internal/controllerlib" "go.pinniped.dev/internal/kubeclient" "go.pinniped.dev/internal/testutil" ) type tlsListenerWrapper struct { listener net.Listener closeError error } func (t *tlsListenerWrapper) Accept() (net.Conn, error) { return t.listener.Accept() } func (t *tlsListenerWrapper) Close() error { if t.closeError != nil { // Really close the connection and then "pretend" that there was an error during close. _ = t.listener.Close() return t.closeError } return t.listener.Close() } func (t *tlsListenerWrapper) Addr() net.Addr { return t.listener.Addr() } func TestImpersonatorConfigControllerOptions(t *testing.T) { spec.Run(t, "options", func(t *testing.T, when spec.G, it spec.S) { const installedInNamespace = "some-namespace" const configMapResourceName = "some-configmap-resource-name" const generatedLoadBalancerServiceName = "some-service-resource-name" const tlsSecretName = "some-tls-secret-name" //nolint:gosec // this is not a credential const caSecretName = "some-ca-secret-name" var r *require.Assertions var observableWithInformerOption *testutil.ObservableWithInformerOption var observableWithInitialEventOption *testutil.ObservableWithInitialEventOption var configMapsInformerFilter controllerlib.Filter var servicesInformerFilter controllerlib.Filter var secretsInformerFilter controllerlib.Filter it.Before(func() { r = require.New(t) observableWithInformerOption = testutil.NewObservableWithInformerOption() observableWithInitialEventOption = testutil.NewObservableWithInitialEventOption() sharedInformerFactory := kubeinformers.NewSharedInformerFactory(nil, 0) configMapsInformer := sharedInformerFactory.Core().V1().ConfigMaps() servicesInformer := sharedInformerFactory.Core().V1().Services() secretsInformer := sharedInformerFactory.Core().V1().Secrets() _ = NewImpersonatorConfigController( installedInNamespace, configMapResourceName, "", nil, nil, configMapsInformer, servicesInformer, secretsInformer, observableWithInformerOption.WithInformer, observableWithInitialEventOption.WithInitialEvent, generatedLoadBalancerServiceName, tlsSecretName, caSecretName, nil, nil, nil, nil, ) configMapsInformerFilter = observableWithInformerOption.GetFilterForInformer(configMapsInformer) servicesInformerFilter = observableWithInformerOption.GetFilterForInformer(servicesInformer) secretsInformerFilter = observableWithInformerOption.GetFilterForInformer(secretsInformer) }) when("watching ConfigMap objects", func() { var subject controllerlib.Filter var target, wrongNamespace, wrongName, unrelated *corev1.ConfigMap it.Before(func() { subject = configMapsInformerFilter target = &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: configMapResourceName, Namespace: installedInNamespace}} wrongNamespace = &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: configMapResourceName, Namespace: "wrong-namespace"}} wrongName = &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: installedInNamespace}} unrelated = &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: "wrong-namespace"}} }) when("the target ConfigMap changes", func() { it("returns true to trigger the sync method", func() { r.True(subject.Add(target)) r.True(subject.Update(target, unrelated)) r.True(subject.Update(unrelated, target)) r.True(subject.Delete(target)) }) }) when("a ConfigMap from another namespace changes", func() { it("returns false to avoid triggering the sync method", func() { r.False(subject.Add(wrongNamespace)) r.False(subject.Update(wrongNamespace, unrelated)) r.False(subject.Update(unrelated, wrongNamespace)) r.False(subject.Delete(wrongNamespace)) }) }) when("a ConfigMap with a different name changes", func() { it("returns false to avoid triggering the sync method", func() { r.False(subject.Add(wrongName)) r.False(subject.Update(wrongName, unrelated)) r.False(subject.Update(unrelated, wrongName)) r.False(subject.Delete(wrongName)) }) }) when("a ConfigMap with a different name and a different namespace changes", func() { it("returns false to avoid triggering the sync method", func() { r.False(subject.Add(unrelated)) r.False(subject.Update(unrelated, unrelated)) r.False(subject.Delete(unrelated)) }) }) }) when("watching Service objects", func() { var subject controllerlib.Filter var target, wrongNamespace, wrongName, unrelated *corev1.Service it.Before(func() { subject = servicesInformerFilter target = &corev1.Service{ObjectMeta: metav1.ObjectMeta{Name: generatedLoadBalancerServiceName, Namespace: installedInNamespace}} wrongNamespace = &corev1.Service{ObjectMeta: metav1.ObjectMeta{Name: generatedLoadBalancerServiceName, Namespace: "wrong-namespace"}} wrongName = &corev1.Service{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: installedInNamespace}} unrelated = &corev1.Service{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: "wrong-namespace"}} }) when("the target Service changes", func() { it("returns true to trigger the sync method", func() { r.True(subject.Add(target)) r.True(subject.Update(target, unrelated)) r.True(subject.Update(unrelated, target)) r.True(subject.Delete(target)) }) }) when("a Service from another namespace changes", func() { it("returns false to avoid triggering the sync method", func() { r.False(subject.Add(wrongNamespace)) r.False(subject.Update(wrongNamespace, unrelated)) r.False(subject.Update(unrelated, wrongNamespace)) r.False(subject.Delete(wrongNamespace)) }) }) when("a Service with a different name changes", func() { it("returns false to avoid triggering the sync method", func() { r.False(subject.Add(wrongName)) r.False(subject.Update(wrongName, unrelated)) r.False(subject.Update(unrelated, wrongName)) r.False(subject.Delete(wrongName)) }) }) when("a Service with a different name and a different namespace changes", func() { it("returns false to avoid triggering the sync method", func() { r.False(subject.Add(unrelated)) r.False(subject.Update(unrelated, unrelated)) r.False(subject.Delete(unrelated)) }) }) }) when("watching Secret objects", func() { var subject controllerlib.Filter var target1, target2, wrongNamespace1, wrongNamespace2, wrongName, unrelated *corev1.Secret it.Before(func() { subject = secretsInformerFilter target1 = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: tlsSecretName, Namespace: installedInNamespace}} target2 = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: caSecretName, Namespace: installedInNamespace}} wrongNamespace1 = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: tlsSecretName, Namespace: "wrong-namespace"}} wrongNamespace2 = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: caSecretName, Namespace: "wrong-namespace"}} wrongName = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: installedInNamespace}} unrelated = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: "wrong-name", Namespace: "wrong-namespace"}} }) when("one of the target Secrets changes", func() { it("returns true to trigger the sync method", func() { r.True(subject.Add(target1)) r.True(subject.Update(target1, unrelated)) r.True(subject.Update(unrelated, target1)) r.True(subject.Delete(target1)) r.True(subject.Add(target2)) r.True(subject.Update(target2, unrelated)) r.True(subject.Update(unrelated, target2)) r.True(subject.Delete(target2)) }) }) when("a Secret from another namespace changes", func() { it("returns false to avoid triggering the sync method", func() { r.False(subject.Add(wrongNamespace1)) r.False(subject.Update(wrongNamespace1, unrelated)) r.False(subject.Update(unrelated, wrongNamespace1)) r.False(subject.Delete(wrongNamespace1)) r.False(subject.Add(wrongNamespace2)) r.False(subject.Update(wrongNamespace2, unrelated)) r.False(subject.Update(unrelated, wrongNamespace2)) r.False(subject.Delete(wrongNamespace2)) }) }) when("a Secret with a different name changes", func() { it("returns false to avoid triggering the sync method", func() { r.False(subject.Add(wrongName)) r.False(subject.Update(wrongName, unrelated)) r.False(subject.Update(unrelated, wrongName)) r.False(subject.Delete(wrongName)) }) }) when("a Secret with a different name and a different namespace changes", func() { it("returns false to avoid triggering the sync method", func() { r.False(subject.Add(unrelated)) r.False(subject.Update(unrelated, unrelated)) r.False(subject.Delete(unrelated)) }) }) }) when("starting up", func() { it("asks for an initial event because the ConfigMap may not exist yet and it needs to run anyway", func() { r.Equal(&controllerlib.Key{ Namespace: installedInNamespace, Name: configMapResourceName, }, observableWithInitialEventOption.GetInitialEventKey()) }) }) }, spec.Parallel(), spec.Report(report.Terminal{})) } func TestImpersonatorConfigControllerSync(t *testing.T) { spec.Run(t, "Sync", func(t *testing.T, when spec.G, it spec.S) { const installedInNamespace = "some-namespace" const configMapResourceName = "some-configmap-resource-name" const credentialIssuerResourceName = "some-credential-issuer-resource-name" const loadBalancerServiceName = "some-service-resource-name" const tlsSecretName = "some-tls-secret-name" //nolint:gosec // this is not a credential const caSecretName = "some-ca-secret-name" const localhostIP = "127.0.0.1" const httpsPort = ":443" const fakeServerResponseBody = "hello, world!" var labels = map[string]string{"app": "app-name", "other-key": "other-value"} var r *require.Assertions var subject controllerlib.Controller var kubeAPIClient *kubernetesfake.Clientset var pinnipedAPIClient *pinnipedfake.Clientset var kubeInformerClient *kubernetesfake.Clientset var kubeInformers kubeinformers.SharedInformerFactory var cancelContext context.Context var cancelContextCancelFunc context.CancelFunc var syncContext *controllerlib.Context var startTLSListenerFuncWasCalled int var startTLSListenerFuncError error var startTLSListenerUponCloseError error var httpHandlerFactoryFuncError error var startedTLSListener net.Listener var frozenNow time.Time var startTLSListenerFunc = func(network, listenAddress string, config *tls.Config) (net.Listener, error) { startTLSListenerFuncWasCalled++ r.Equal("tcp", network) r.Equal(":8444", listenAddress) r.Equal(uint16(tls.VersionTLS12), config.MinVersion) if startTLSListenerFuncError != nil { return nil, startTLSListenerFuncError } var err error startedTLSListener, err = tls.Listen(network, localhostIP+":0", config) // automatically choose the port for unit tests r.NoError(err) return &tlsListenerWrapper{listener: startedTLSListener, closeError: startTLSListenerUponCloseError}, nil } var testServerAddr = func() string { return startedTLSListener.Addr().String() } var closeTLSListener = func() { if startedTLSListener != nil { err := startedTLSListener.Close() // Ignore when the production code has already closed the server because there is nothing to // clean up in that case. if err != nil && !strings.Contains(err.Error(), "use of closed network connection") { r.NoError(err) } } } var requireTLSServerIsRunning = func(caCrt []byte, addr string, dnsOverrides map[string]string) { r.Greater(startTLSListenerFuncWasCalled, 0) realDialer := &net.Dialer{} overrideDialContext := func(ctx context.Context, network, addr string) (net.Conn, error) { replacementAddr, hasKey := dnsOverrides[addr] if hasKey { t.Logf("DialContext replacing addr %s with %s", addr, replacementAddr) addr = replacementAddr } else if dnsOverrides != nil { t.Fatal("dnsOverrides was provided but not used, which was probably a mistake") } return realDialer.DialContext(ctx, network, addr) } var tr *http.Transport if caCrt == nil { tr = &http.Transport{ TLSClientConfig: &tls.Config{InsecureSkipVerify: true}, //nolint:gosec DialContext: overrideDialContext, } } else { rootCAs := x509.NewCertPool() rootCAs.AppendCertsFromPEM(caCrt) tr = &http.Transport{ TLSClientConfig: &tls.Config{RootCAs: rootCAs}, DialContext: overrideDialContext, } } client := &http.Client{Transport: tr} url := "https://" + addr req, err := http.NewRequestWithContext(context.Background(), "GET", url, nil) r.NoError(err) var resp *http.Response assert.Eventually(t, func() bool { resp, err = client.Do(req.Clone(context.Background())) //nolint:bodyclose return err == nil }, 20*time.Second, 50*time.Millisecond) r.NoError(err) r.Equal(http.StatusOK, resp.StatusCode) body, err := ioutil.ReadAll(resp.Body) r.NoError(resp.Body.Close()) r.NoError(err) r.Equal(fakeServerResponseBody, string(body)) } var requireTLSServerIsRunningWithoutCerts = func() { r.Greater(startTLSListenerFuncWasCalled, 0) tr := &http.Transport{ TLSClientConfig: &tls.Config{InsecureSkipVerify: true}, //nolint:gosec } client := &http.Client{Transport: tr} url := "https://" + testServerAddr() req, err := http.NewRequestWithContext(context.Background(), "GET", url, nil) r.NoError(err) expectedErrorRegex := "Get .*: remote error: tls: unrecognized name" expectedErrorRegexCompiled, err := regexp.Compile(expectedErrorRegex) r.NoError(err) assert.Eventually(t, func() bool { _, err = client.Do(req.Clone(context.Background())) //nolint:bodyclose return err != nil && expectedErrorRegexCompiled.MatchString(err.Error()) }, 20*time.Second, 50*time.Millisecond) r.Error(err) r.Regexp(expectedErrorRegex, err.Error()) } var requireTLSServerIsNoLongerRunning = func() { r.Greater(startTLSListenerFuncWasCalled, 0) var err error expectedErrorRegex := "dial tcp .*: connect: connection refused" expectedErrorRegexCompiled, err := regexp.Compile(expectedErrorRegex) r.NoError(err) assert.Eventually(t, func() bool { _, err = tls.Dial( startedTLSListener.Addr().Network(), testServerAddr(), &tls.Config{InsecureSkipVerify: true}, //nolint:gosec ) return err != nil && expectedErrorRegexCompiled.MatchString(err.Error()) }, 20*time.Second, 50*time.Millisecond) r.Error(err) r.Regexp(expectedErrorRegex, err.Error()) } var requireTLSServerWasNeverStarted = func() { r.Equal(0, startTLSListenerFuncWasCalled) } // Defer starting the informers until the last possible moment so that the // nested Before's can keep adding things to the informer caches. var startInformersAndController = func() { // Set this at the last second to allow for injection of server override. subject = NewImpersonatorConfigController( installedInNamespace, configMapResourceName, credentialIssuerResourceName, kubeAPIClient, pinnipedAPIClient, kubeInformers.Core().V1().ConfigMaps(), kubeInformers.Core().V1().Services(), kubeInformers.Core().V1().Secrets(), controllerlib.WithInformer, controllerlib.WithInitialEvent, loadBalancerServiceName, tlsSecretName, caSecretName, labels, clock.NewFakeClock(frozenNow), startTLSListenerFunc, func() (http.Handler, error) { return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { _, err := fmt.Fprint(w, fakeServerResponseBody) r.NoError(err) }), httpHandlerFactoryFuncError }, ) // Set this at the last second to support calling subject.Name(). syncContext = &controllerlib.Context{ Context: cancelContext, Name: subject.Name(), Key: controllerlib.Key{ Namespace: installedInNamespace, Name: configMapResourceName, }, } // Must start informers before calling TestRunSynchronously() kubeInformers.Start(cancelContext.Done()) controllerlib.TestRunSynchronously(t, subject) } var addImpersonatorConfigMapToTracker = func(resourceName, configYAML string, client *kubernetesfake.Clientset) { impersonatorConfigMap := &corev1.ConfigMap{ ObjectMeta: metav1.ObjectMeta{ Name: resourceName, Namespace: installedInNamespace, }, Data: map[string]string{ "config.yaml": configYAML, }, } r.NoError(client.Tracker().Add(impersonatorConfigMap)) } var newSecretWithData = func(resourceName string, data map[string][]byte) *corev1.Secret { return &corev1.Secret{ ObjectMeta: metav1.ObjectMeta{ Name: resourceName, Namespace: installedInNamespace, }, Data: data, } } var newEmptySecret = func(resourceName string) *corev1.Secret { return newSecretWithData(resourceName, map[string][]byte{}) } var newCA = func() *certauthority.CA { ca, err := certauthority.New(pkix.Name{CommonName: "test CA"}, 24*time.Hour) r.NoError(err) return ca } var newCACertSecretData = func(ca *certauthority.CA) map[string][]byte { keyPEM, err := ca.PrivateKeyToPEM() r.NoError(err) return map[string][]byte{ "ca.crt": ca.Bundle(), "ca.key": keyPEM, } } var newTLSCertSecretData = func(ca *certauthority.CA, dnsNames []string, ip string) map[string][]byte { impersonationCert, err := ca.Issue(pkix.Name{}, dnsNames, []net.IP{net.ParseIP(ip)}, 24*time.Hour) r.NoError(err) certPEM, keyPEM, err := certauthority.ToPEM(impersonationCert) r.NoError(err) return map[string][]byte{ corev1.TLSPrivateKeyKey: keyPEM, corev1.TLSCertKey: certPEM, } } var newActualCASecret = func(ca *certauthority.CA, resourceName string) *corev1.Secret { return newSecretWithData(resourceName, newCACertSecretData(ca)) } var newActualTLSSecret = func(ca *certauthority.CA, resourceName string, ip string) *corev1.Secret { return newSecretWithData(resourceName, newTLSCertSecretData(ca, nil, ip)) } var newActualTLSSecretWithMultipleHostnames = func(ca *certauthority.CA, resourceName string, ip string) *corev1.Secret { return newSecretWithData(resourceName, newTLSCertSecretData(ca, []string{"foo", "bar"}, ip)) } var newLoadBalancerService = func(resourceName string, status corev1.ServiceStatus) *corev1.Service { return &corev1.Service{ ObjectMeta: metav1.ObjectMeta{ Name: resourceName, Namespace: installedInNamespace, }, Spec: corev1.ServiceSpec{ Type: corev1.ServiceTypeLoadBalancer, }, Status: status, } } // Anytime an object is added/updated/deleted in the informer's client *after* the informer is started, then we // need to wait for the informer's cache to asynchronously pick up that change from its "watch". // If an object is added to the informer's client *before* the informer is started, then waiting is // not needed because the informer's initial "list" will pick up the object. var waitForObjectToAppearInInformer = func(obj kubeclient.Object, informer controllerlib.InformerGetter) { var objFromInformer interface{} var exists bool var err error assert.Eventually(t, func() bool { objFromInformer, exists, err = informer.Informer().GetIndexer().GetByKey(installedInNamespace + "/" + obj.GetName()) return err == nil && exists && reflect.DeepEqual(objFromInformer.(kubeclient.Object), obj) }, 30*time.Second, 10*time.Millisecond) r.NoError(err) r.True(exists, "this object should have existed in informer but didn't: %+v", obj) r.Equal(obj, objFromInformer, "was waiting for expected to be found in informer, but found actual") } // See comment for waitForObjectToAppearInInformer above. var waitForObjectToBeDeletedFromInformer = func(resourceName string, informer controllerlib.InformerGetter) { var objFromInformer interface{} var exists bool var err error assert.Eventually(t, func() bool { objFromInformer, exists, err = informer.Informer().GetIndexer().GetByKey(installedInNamespace + "/" + resourceName) return err == nil && !exists }, 30*time.Second, 10*time.Millisecond) r.NoError(err) r.False(exists, "this object should have been deleted from informer but wasn't: %s", objFromInformer) } var addObjectToInformerAndWait = func(obj kubeclient.Object, informer controllerlib.InformerGetter) { r.NoError(kubeInformerClient.Tracker().Add(obj)) waitForObjectToAppearInInformer(obj, informer) } var addObjectFromCreateActionToInformerAndWait = func(action coretesting.Action, informer controllerlib.InformerGetter) { createdObject, ok := action.(coretesting.CreateAction).GetObject().(kubeclient.Object) r.True(ok, "should have been able to cast this action's object to kubeclient.Object: %v", action) addObjectToInformerAndWait(createdObject, informer) } var updateImpersonatorConfigMapInInformerAndWait = func(resourceName, configYAML string, informer controllerlib.InformerGetter) { configMapObj, err := kubeInformerClient.Tracker().Get( schema.GroupVersionResource{Version: "v1", Resource: "configmaps"}, installedInNamespace, resourceName, ) r.NoError(err) configMap := configMapObj.(*corev1.ConfigMap) configMap = configMap.DeepCopy() // don't edit the original from the tracker configMap.Data = map[string]string{ "config.yaml": configYAML, } r.NoError(kubeInformerClient.Tracker().Update( schema.GroupVersionResource{Version: "v1", Resource: "configmaps"}, configMap, installedInNamespace, )) waitForObjectToAppearInInformer(configMap, informer) } var updateLoadBalancerServiceInInformerAndWait = func(resourceName string, ingresses []corev1.LoadBalancerIngress, informer controllerlib.InformerGetter) { serviceObj, err := kubeInformerClient.Tracker().Get( schema.GroupVersionResource{Version: "v1", Resource: "services"}, installedInNamespace, resourceName, ) r.NoError(err) service := serviceObj.(*corev1.Service) service = service.DeepCopy() // don't edit the original from the tracker service.Status = corev1.ServiceStatus{LoadBalancer: corev1.LoadBalancerStatus{Ingress: ingresses}} r.NoError(kubeInformerClient.Tracker().Update( schema.GroupVersionResource{Version: "v1", Resource: "services"}, service, installedInNamespace, )) waitForObjectToAppearInInformer(service, informer) } var addLoadBalancerServiceToTracker = func(resourceName string, client *kubernetesfake.Clientset) { loadBalancerService := newLoadBalancerService(resourceName, corev1.ServiceStatus{}) r.NoError(client.Tracker().Add(loadBalancerService)) } var addLoadBalancerServiceWithIngressToTracker = func(resourceName string, ingress []corev1.LoadBalancerIngress, client *kubernetesfake.Clientset) { loadBalancerService := newLoadBalancerService(resourceName, corev1.ServiceStatus{ LoadBalancer: corev1.LoadBalancerStatus{Ingress: ingress}, }) r.NoError(client.Tracker().Add(loadBalancerService)) } var addSecretToTrackers = func(secret *corev1.Secret, clients ...*kubernetesfake.Clientset) { for _, client := range clients { secretCopy := secret.DeepCopy() r.NoError(client.Tracker().Add(secretCopy)) } } var deleteServiceFromTracker = func(resourceName string, client *kubernetesfake.Clientset) { r.NoError(client.Tracker().Delete( schema.GroupVersionResource{Version: "v1", Resource: "services"}, installedInNamespace, resourceName, )) } var deleteSecretFromTracker = func(resourceName string, client *kubernetesfake.Clientset) { r.NoError(client.Tracker().Delete( schema.GroupVersionResource{Version: "v1", Resource: "secrets"}, installedInNamespace, resourceName, )) } var addNodeWithRoleToTracker = func(role string, client *kubernetesfake.Clientset) { r.NoError(client.Tracker().Add( &corev1.Node{ ObjectMeta: metav1.ObjectMeta{ Name: "node", Labels: map[string]string{"kubernetes.io/node-role": role}, }, }, )) } var requireNodesListed = func(action coretesting.Action) { r.Equal( coretesting.NewListAction( schema.GroupVersionResource{Version: "v1", Resource: "nodes"}, schema.GroupVersionKind{Group: "", Version: "v1", Kind: "Node"}, "", metav1.ListOptions{}), action, ) } var newSuccessStrategy = func(endpoint string, ca []byte) v1alpha1.CredentialIssuerStrategy { return v1alpha1.CredentialIssuerStrategy{ Type: v1alpha1.ImpersonationProxyStrategyType, Status: v1alpha1.SuccessStrategyStatus, Reason: v1alpha1.ListeningStrategyReason, Message: "impersonation proxy is ready to accept client connections", LastUpdateTime: metav1.NewTime(frozenNow), Frontend: &v1alpha1.CredentialIssuerFrontend{ Type: v1alpha1.ImpersonationProxyFrontendType, ImpersonationProxyInfo: &v1alpha1.ImpersonationProxyInfo{ Endpoint: "https://" + endpoint, CertificateAuthorityData: base64.StdEncoding.EncodeToString(ca), }, }, } } var newAutoDisabledStrategy = func() v1alpha1.CredentialIssuerStrategy { return v1alpha1.CredentialIssuerStrategy{ Type: v1alpha1.ImpersonationProxyStrategyType, Status: v1alpha1.ErrorStrategyStatus, Reason: v1alpha1.DisabledStrategyReason, Message: "automatically determined that impersonation proxy should be disabled", LastUpdateTime: metav1.NewTime(frozenNow), Frontend: nil, } } var newManuallyDisabledStrategy = func() v1alpha1.CredentialIssuerStrategy { s := newAutoDisabledStrategy() s.Message = "impersonation proxy was explicitly disabled by configuration" return s } var newPendingStrategy = func() v1alpha1.CredentialIssuerStrategy { return v1alpha1.CredentialIssuerStrategy{ Type: v1alpha1.ImpersonationProxyStrategyType, Status: v1alpha1.ErrorStrategyStatus, Reason: v1alpha1.PendingStrategyReason, Message: "waiting for load balancer Service to be assigned IP or hostname", LastUpdateTime: metav1.NewTime(frozenNow), Frontend: nil, } } var newErrorStrategy = func(msg string) v1alpha1.CredentialIssuerStrategy { return v1alpha1.CredentialIssuerStrategy{ Type: v1alpha1.ImpersonationProxyStrategyType, Status: v1alpha1.ErrorStrategyStatus, Reason: v1alpha1.ErrorDuringSetupStrategyReason, Message: msg, LastUpdateTime: metav1.NewTime(frozenNow), Frontend: nil, } } var getCredentialIssuer = func() *v1alpha1.CredentialIssuer { credentialIssuerObj, err := pinnipedAPIClient.Tracker().Get( schema.GroupVersionResource{ Group: v1alpha1.SchemeGroupVersion.Group, Version: v1alpha1.SchemeGroupVersion.Version, Resource: "credentialissuers", }, "", credentialIssuerResourceName, ) r.NoError(err) credentialIssuer, ok := credentialIssuerObj.(*v1alpha1.CredentialIssuer) r.True(ok, "should have been able to cast this obj to CredentialIssuer: %v", credentialIssuerObj) return credentialIssuer } var requireCredentialIssuer = func(expectedStrategy v1alpha1.CredentialIssuerStrategy) { // Rather than looking at the specific API actions on pinnipedAPIClient, we just look // at the final result here. // This is because the implementation is using a helper from another package to create // and update the CredentialIssuer, and the specific API actions performed by that // implementation are pretty complex and are already tested by its own unit tests. // As long as we get the final result that we wanted then we are happy for the purposes // of this test. credentialIssuer := getCredentialIssuer() r.Equal(labels, credentialIssuer.Labels) r.Equal([]v1alpha1.CredentialIssuerStrategy{expectedStrategy}, credentialIssuer.Status.Strategies) } var requireLoadBalancerWasCreated = func(action coretesting.Action) { createAction, ok := action.(coretesting.CreateAction) r.True(ok, "should have been able to cast this action to CreateAction: %v", action) r.Equal("create", createAction.GetVerb()) createdLoadBalancerService := createAction.GetObject().(*corev1.Service) r.Equal(loadBalancerServiceName, createdLoadBalancerService.Name) r.Equal(installedInNamespace, createdLoadBalancerService.Namespace) r.Equal(corev1.ServiceTypeLoadBalancer, createdLoadBalancerService.Spec.Type) r.Equal("app-name", createdLoadBalancerService.Spec.Selector["app"]) r.Equal(labels, createdLoadBalancerService.Labels) } var requireLoadBalancerWasDeleted = func(action coretesting.Action) { deleteAction, ok := action.(coretesting.DeleteAction) r.True(ok, "should have been able to cast this action to DeleteAction: %v", action) r.Equal("delete", deleteAction.GetVerb()) r.Equal(loadBalancerServiceName, deleteAction.GetName()) r.Equal("services", deleteAction.GetResource().Resource) } var requireTLSSecretWasDeleted = func(action coretesting.Action) { deleteAction, ok := action.(coretesting.DeleteAction) r.True(ok, "should have been able to cast this action to DeleteAction: %v", action) r.Equal("delete", deleteAction.GetVerb()) r.Equal(tlsSecretName, deleteAction.GetName()) r.Equal("secrets", deleteAction.GetResource().Resource) } var requireCASecretWasCreated = func(action coretesting.Action) []byte { createAction, ok := action.(coretesting.CreateAction) r.True(ok, "should have been able to cast this action to CreateAction: %v", action) r.Equal("create", createAction.GetVerb()) createdSecret := createAction.GetObject().(*corev1.Secret) r.Equal(caSecretName, createdSecret.Name) r.Equal(installedInNamespace, createdSecret.Namespace) r.Equal(corev1.SecretTypeOpaque, createdSecret.Type) r.Equal(labels, createdSecret.Labels) r.Len(createdSecret.Data, 2) createdCertPEM := createdSecret.Data["ca.crt"] createdKeyPEM := createdSecret.Data["ca.key"] r.NotNil(createdCertPEM) r.NotNil(createdKeyPEM) _, err := tls.X509KeyPair(createdCertPEM, createdKeyPEM) r.NoError(err, "key does not match cert") // Decode and parse the cert to check some of its fields. block, _ := pem.Decode(createdCertPEM) require.NotNil(t, block) caCert, err := x509.ParseCertificate(block.Bytes) require.NoError(t, err) require.Equal(t, "Pinniped Impersonation Proxy CA", caCert.Subject.CommonName) require.WithinDuration(t, time.Now().Add(-10*time.Second), caCert.NotBefore, 10*time.Second) require.WithinDuration(t, time.Now().Add(100*time.Hour*24*365), caCert.NotAfter, 10*time.Second) return createdCertPEM } var requireTLSSecretWasCreated = func(action coretesting.Action, caCert []byte) { createAction, ok := action.(coretesting.CreateAction) r.True(ok, "should have been able to cast this action to CreateAction: %v", action) r.Equal("create", createAction.GetVerb()) createdSecret := createAction.GetObject().(*corev1.Secret) r.Equal(tlsSecretName, createdSecret.Name) r.Equal(installedInNamespace, createdSecret.Namespace) r.Equal(corev1.SecretTypeTLS, createdSecret.Type) r.Equal(labels, createdSecret.Labels) r.Len(createdSecret.Data, 2) createdCertPEM := createdSecret.Data[corev1.TLSCertKey] createdKeyPEM := createdSecret.Data[corev1.TLSPrivateKeyKey] r.NotNil(createdKeyPEM) r.NotNil(createdCertPEM) validCert := testutil.ValidateCertificate(t, string(caCert), string(createdCertPEM)) validCert.RequireMatchesPrivateKey(string(createdKeyPEM)) validCert.RequireLifetime(time.Now().Add(-10*time.Second), time.Now().Add(100*time.Hour*24*365), 10*time.Second) } var runControllerSync = func() error { return controllerlib.TestSync(t, subject, *syncContext) } it.Before(func() { r = require.New(t) cancelContext, cancelContextCancelFunc = context.WithCancel(context.Background()) kubeInformerClient = kubernetesfake.NewSimpleClientset() kubeInformers = kubeinformers.NewSharedInformerFactoryWithOptions(kubeInformerClient, 0, kubeinformers.WithNamespace(installedInNamespace), ) kubeAPIClient = kubernetesfake.NewSimpleClientset() pinnipedAPIClient = pinnipedfake.NewSimpleClientset() frozenNow = time.Date(2021, time.March, 2, 7, 42, 0, 0, time.Local) }) it.After(func() { cancelContextCancelFunc() closeTLSListener() }) when("the ConfigMap does not yet exist in the installation namespace or it was deleted (defaults to auto mode)", func() { it.Before(func() { addImpersonatorConfigMapToTracker("some-other-unrelated-configmap", "foo: bar", kubeInformerClient) }) when("there are visible control plane nodes", func() { it.Before(func() { addNodeWithRoleToTracker("control-plane", kubeAPIClient) }) it("does not start the impersonator or load balancer", func() { startInformersAndController() r.NoError(runControllerSync()) requireTLSServerWasNeverStarted() r.Len(kubeAPIClient.Actions(), 1) requireNodesListed(kubeAPIClient.Actions()[0]) requireCredentialIssuer(newAutoDisabledStrategy()) }) }) when("there are visible control plane nodes and a loadbalancer and a tls Secret", func() { it.Before(func() { addNodeWithRoleToTracker("control-plane", kubeAPIClient) addLoadBalancerServiceToTracker(loadBalancerServiceName, kubeInformerClient) addLoadBalancerServiceToTracker(loadBalancerServiceName, kubeAPIClient) addSecretToTrackers(newEmptySecret(tlsSecretName), kubeAPIClient, kubeInformerClient) }) it("does not start the impersonator, deletes the loadbalancer, deletes the Secret", func() { startInformersAndController() r.NoError(runControllerSync()) requireTLSServerWasNeverStarted() r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireLoadBalancerWasDeleted(kubeAPIClient.Actions()[1]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[2]) requireCredentialIssuer(newAutoDisabledStrategy()) }) }) when("there are not visible control plane nodes", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) startInformersAndController() r.NoError(runControllerSync()) }) it("starts the load balancer automatically", func() { requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireLoadBalancerWasCreated(kubeAPIClient.Actions()[1]) requireCASecretWasCreated(kubeAPIClient.Actions()[2]) requireCredentialIssuer(newPendingStrategy()) }) }) when("there are not visible control plane nodes and a load balancer already exists without an IP/hostname", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceToTracker(loadBalancerServiceName, kubeInformerClient) addLoadBalancerServiceToTracker(loadBalancerServiceName, kubeAPIClient) startInformersAndController() r.NoError(runControllerSync()) }) it("does not start the load balancer automatically", func() { requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 2) requireNodesListed(kubeAPIClient.Actions()[0]) requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireCredentialIssuer(newPendingStrategy()) }) }) when("there are not visible control plane nodes and a load balancer already exists with empty ingress", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: "", Hostname: ""}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: "", Hostname: ""}}, kubeAPIClient) startInformersAndController() r.NoError(runControllerSync()) }) it("does not start the load balancer automatically", func() { requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 2) requireNodesListed(kubeAPIClient.Actions()[0]) requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireCredentialIssuer(newPendingStrategy()) }) }) when("there are not visible control plane nodes and a load balancer already exists with invalid ip", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: "not-an-ip"}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: "not-an-ip"}}, kubeAPIClient) startInformersAndController() r.EqualError(runControllerSync(), "could not find valid IP addresses or hostnames from load balancer some-namespace/some-service-resource-name") }) it("does not start the load balancer automatically", func() { requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 1) requireNodesListed(kubeAPIClient.Actions()[0]) requireCredentialIssuer(newErrorStrategy("could not find valid IP addresses or hostnames from load balancer some-namespace/some-service-resource-name")) }) }) when("there are not visible control plane nodes and a load balancer already exists with multiple ips", func() { const fakeIP = "127.0.0.123" it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: fakeIP}, {IP: "127.0.0.456"}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: fakeIP}, {IP: "127.0.0.456"}}, kubeAPIClient) startInformersAndController() r.NoError(runControllerSync()) }) it("starts the impersonator with certs that match the first IP address", func() { r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) requireTLSServerIsRunning(ca, fakeIP, map[string]string{fakeIP + ":443": testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeIP, ca)) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Secrets()) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) // keeps the secret around after resync r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) // nothing changed requireCredentialIssuer(newSuccessStrategy(fakeIP, ca)) }) }) when("there are not visible control plane nodes and a load balancer already exists with multiple hostnames", func() { firstHostname := "fake-1.example.com" it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{Hostname: firstHostname}, {Hostname: "fake-2.example.com"}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{Hostname: firstHostname}, {Hostname: "fake-2.example.com"}}, kubeAPIClient) startInformersAndController() r.NoError(runControllerSync()) }) it("starts the impersonator with certs that match the first hostname", func() { r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) requireTLSServerIsRunning(ca, firstHostname, map[string]string{firstHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(firstHostname, ca)) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Secrets()) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) // keeps the secret around after resync r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) // nothing changed requireCredentialIssuer(newSuccessStrategy(firstHostname, ca)) }) }) when("there are not visible control plane nodes and a load balancer already exists with hostnames and ips", func() { firstHostname := "fake-1.example.com" it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: "127.0.0.254"}, {Hostname: firstHostname}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: "127.0.0.254"}, {Hostname: firstHostname}}, kubeAPIClient) startInformersAndController() r.NoError(runControllerSync()) }) it("starts the impersonator with certs that match the first hostname", func() { r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) requireTLSServerIsRunning(ca, firstHostname, map[string]string{firstHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(firstHostname, ca)) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Secrets()) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) // keeps the secret around after resync r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) // nothing changed requireCredentialIssuer(newSuccessStrategy(firstHostname, ca)) }) }) when("there are not visible control plane nodes, a TLS secret exists with multiple hostnames and an IP", func() { var caCrt []byte it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeAPIClient) ca := newCA() caSecret := newActualCASecret(ca, caSecretName) caCrt = caSecret.Data["ca.crt"] addSecretToTrackers(caSecret, kubeAPIClient, kubeInformerClient) addSecretToTrackers(newActualTLSSecretWithMultipleHostnames(ca, tlsSecretName, localhostIP), kubeAPIClient, kubeInformerClient) startInformersAndController() r.NoError(runControllerSync()) }) it("deletes and recreates the secret to match the IP in the load balancer without the extra hostnames", func() { r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], caCrt) requireTLSServerIsRunning(caCrt, testServerAddr(), nil) requireCredentialIssuer(newSuccessStrategy(localhostIP, caCrt)) }) }) when("the cert's name needs to change but there is an error while deleting the tls Secret", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: "127.0.0.42"}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: "127.0.0.42"}}, kubeAPIClient) ca := newCA() addSecretToTrackers(newActualCASecret(ca, caSecretName), kubeAPIClient, kubeInformerClient) addSecretToTrackers(newActualTLSSecretWithMultipleHostnames(ca, tlsSecretName, localhostIP), kubeAPIClient, kubeInformerClient) kubeAPIClient.PrependReactor("delete", "secrets", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { return true, nil, fmt.Errorf("error on delete") }) }) it("returns an error and runs the proxy without certs", func() { startInformersAndController() r.Error(runControllerSync(), "error on delete") r.Len(kubeAPIClient.Actions(), 2) requireNodesListed(kubeAPIClient.Actions()[0]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[1]) requireTLSServerIsRunningWithoutCerts() requireCredentialIssuer(newErrorStrategy("error on delete")) }) }) when("the cert's name might need to change but there is an error while determining the new name", func() { var caCrt []byte it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeAPIClient) ca := newCA() caSecret := newActualCASecret(ca, caSecretName) caCrt = caSecret.Data["ca.crt"] addSecretToTrackers(caSecret, kubeAPIClient, kubeInformerClient) tlsSecret := newActualTLSSecret(ca, tlsSecretName, localhostIP) addSecretToTrackers(tlsSecret, kubeAPIClient, kubeInformerClient) }) it("returns an error and keeps running the proxy with the old cert", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 1) requireNodesListed(kubeAPIClient.Actions()[0]) requireTLSServerIsRunning(caCrt, testServerAddr(), nil) updateLoadBalancerServiceInInformerAndWait(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: "not-an-ip"}}, kubeInformers.Core().V1().Services()) errString := "could not find valid IP addresses or hostnames from load balancer some-namespace/some-service-resource-name" r.EqualError(runControllerSync(), errString) r.Len(kubeAPIClient.Actions(), 1) // no new actions requireTLSServerIsRunning(caCrt, testServerAddr(), nil) requireCredentialIssuer(newErrorStrategy(errString)) }) }) }) when("the ConfigMap is already in the installation namespace", func() { when("the configuration is auto mode with an endpoint", func() { it.Before(func() { configMapYAML := fmt.Sprintf("{mode: auto, endpoint: %s}", localhostIP) addImpersonatorConfigMapToTracker(configMapResourceName, configMapYAML, kubeInformerClient) }) when("there are visible control plane nodes", func() { it.Before(func() { addNodeWithRoleToTracker("control-plane", kubeAPIClient) }) it("does not start the impersonator", func() { startInformersAndController() r.NoError(runControllerSync()) requireTLSServerWasNeverStarted() requireNodesListed(kubeAPIClient.Actions()[0]) r.Len(kubeAPIClient.Actions(), 1) requireCredentialIssuer(newAutoDisabledStrategy()) }) }) when("there are not visible control plane nodes", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("starts the impersonator according to the settings in the ConfigMap", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) requireTLSServerIsRunning(ca, testServerAddr(), nil) requireCredentialIssuer(newSuccessStrategy(localhostIP, ca)) }) }) }) when("the configuration is disabled mode", func() { it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "mode: disabled", kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("does not start the impersonator", func() { startInformersAndController() r.NoError(runControllerSync()) requireTLSServerWasNeverStarted() requireNodesListed(kubeAPIClient.Actions()[0]) r.Len(kubeAPIClient.Actions(), 1) requireCredentialIssuer(newManuallyDisabledStrategy()) }) }) when("the configuration is enabled mode", func() { when("no load balancer", func() { it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "mode: enabled", kubeInformerClient) addNodeWithRoleToTracker("control-plane", kubeAPIClient) }) it("starts the impersonator and creates a load balancer", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireLoadBalancerWasCreated(kubeAPIClient.Actions()[1]) requireCASecretWasCreated(kubeAPIClient.Actions()[2]) requireTLSServerIsRunningWithoutCerts() requireCredentialIssuer(newPendingStrategy()) }) it("returns an error when the tls listener fails to start", func() { startTLSListenerFuncError = errors.New("tls error") startInformersAndController() r.EqualError(runControllerSync(), "tls error") requireCredentialIssuer(newErrorStrategy("tls error")) }) }) when("a loadbalancer already exists", func() { it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "mode: enabled", kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) addLoadBalancerServiceToTracker(loadBalancerServiceName, kubeInformerClient) addLoadBalancerServiceToTracker(loadBalancerServiceName, kubeAPIClient) }) it("starts the impersonator without creating a load balancer", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 2) requireNodesListed(kubeAPIClient.Actions()[0]) requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSServerIsRunningWithoutCerts() requireCredentialIssuer(newPendingStrategy()) }) it("returns an error when the tls listener fails to start", func() { startTLSListenerFuncError = errors.New("tls error") startInformersAndController() r.EqualError(runControllerSync(), "tls error") requireCredentialIssuer(newErrorStrategy("tls error")) }) }) when("a load balancer and a secret already exists", func() { var caCrt []byte it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "mode: enabled", kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) ca := newCA() caSecret := newActualCASecret(ca, caSecretName) caCrt = caSecret.Data["ca.crt"] addSecretToTrackers(caSecret, kubeAPIClient, kubeInformerClient) tlsSecret := newActualTLSSecret(ca, tlsSecretName, localhostIP) addSecretToTrackers(tlsSecret, kubeAPIClient, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeAPIClient) }) it("starts the impersonator with the existing tls certs, does not start loadbalancer or make tls secret", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 1) requireNodesListed(kubeAPIClient.Actions()[0]) requireTLSServerIsRunning(caCrt, testServerAddr(), nil) requireCredentialIssuer(newSuccessStrategy(localhostIP, caCrt)) }) }) when("the configmap has a hostname specified for the endpoint", func() { const fakeHostname = "fake.example.com" it.Before(func() { configMapYAML := fmt.Sprintf("{mode: enabled, endpoint: %s}", fakeHostname) addImpersonatorConfigMapToTracker(configMapResourceName, configMapYAML, kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("starts the impersonator, generates a valid cert for the specified hostname", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) // Check that the server is running and that TLS certs that are being served are are for fakeHostname. requireTLSServerIsRunning(ca, fakeHostname, map[string]string{fakeHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeHostname, ca)) }) }) when("the configmap has a endpoint which is an IP address with a port", func() { const fakeIPWithPort = "127.0.0.1:3000" it.Before(func() { configMapYAML := fmt.Sprintf("{mode: enabled, endpoint: %s}", fakeIPWithPort) addImpersonatorConfigMapToTracker(configMapResourceName, configMapYAML, kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("starts the impersonator, generates a valid cert for the specified IP address", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) // Check that the server is running and that TLS certs that are being served are are for fakeIPWithPort. requireTLSServerIsRunning(ca, fakeIPWithPort, map[string]string{fakeIPWithPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeIPWithPort, ca)) }) }) when("the configmap has a endpoint which is a hostname with a port", func() { const fakeHostnameWithPort = "fake.example.com:3000" it.Before(func() { configMapYAML := fmt.Sprintf("{mode: enabled, endpoint: %s}", fakeHostnameWithPort) addImpersonatorConfigMapToTracker(configMapResourceName, configMapYAML, kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("starts the impersonator, generates a valid cert for the specified hostname", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) // Check that the server is running and that TLS certs that are being served are are for fakeHostnameWithPort. requireTLSServerIsRunning(ca, fakeHostnameWithPort, map[string]string{fakeHostnameWithPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeHostnameWithPort, ca)) }) }) when("switching the configmap from ip address endpoint to hostname endpoint and back to ip address", func() { const fakeHostname = "fake.example.com" const fakeIP = "127.0.0.42" var hostnameYAML = fmt.Sprintf("{mode: enabled, endpoint: %s}", fakeHostname) var ipAddressYAML = fmt.Sprintf("{mode: enabled, endpoint: %s}", fakeIP) it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, ipAddressYAML, kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("regenerates the cert for the hostname, then regenerates it for the IP again", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) // Check that the server is running and that TLS certs that are being served are are for fakeIP. requireTLSServerIsRunning(ca, fakeIP, map[string]string{fakeIP + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeIP, ca)) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Secrets()) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) // Switch the endpoint config to a hostname. updateImpersonatorConfigMapInInformerAndWait(configMapResourceName, hostnameYAML, kubeInformers.Core().V1().ConfigMaps()) r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 5) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[3]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[4], ca) // reuses the old CA // Check that the server is running and that TLS certs that are being served are are for fakeHostname. requireTLSServerIsRunning(ca, fakeHostname, map[string]string{fakeHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeHostname, ca)) // Simulate the informer cache's background update from its watch. deleteSecretFromTracker(tlsSecretName, kubeInformerClient) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[4], kubeInformers.Core().V1().Secrets()) // Switch the endpoint config back to an IP. updateImpersonatorConfigMapInInformerAndWait(configMapResourceName, ipAddressYAML, kubeInformers.Core().V1().ConfigMaps()) r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 7) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[5]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[6], ca) // reuses the old CA again // Check that the server is running and that TLS certs that are being served are are for fakeIP. requireTLSServerIsRunning(ca, fakeIP, map[string]string{fakeIP + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeIP, ca)) }) }) when("the TLS cert goes missing and needs to be recreated, e.g. when a user manually deleted it", func() { const fakeHostname = "fake.example.com" it.Before(func() { configMapYAML := fmt.Sprintf("{mode: enabled, endpoint: %s}", fakeHostname) addImpersonatorConfigMapToTracker(configMapResourceName, configMapYAML, kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) startInformersAndController() }) it("uses the existing CA cert the make a new TLS cert", func() { r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) // Check that the server is running and that TLS certs that are being served are are for fakeHostname. requireTLSServerIsRunning(ca, fakeHostname, map[string]string{fakeHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeHostname, ca)) // Simulate the informer cache's background update from its watch for the CA Secret. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Secrets()) // Delete the TLS Secret that was just created from the Kube API server. Note that we never // simulated it getting added to the informer cache, so we don't need to remove it from there. deleteSecretFromTracker(tlsSecretName, kubeAPIClient) // Run again. It should create a new TLS cert using the old CA cert. r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 4) requireTLSSecretWasCreated(kubeAPIClient.Actions()[3], ca) // Check that the server is running and that TLS certs that are being served are are for fakeHostname. requireTLSServerIsRunning(ca, fakeHostname, map[string]string{fakeHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeHostname, ca)) }) }) when("the CA cert goes missing and needs to be recreated, e.g. when a user manually deleted it", func() { const fakeHostname = "fake.example.com" it.Before(func() { configMapYAML := fmt.Sprintf("{mode: enabled, endpoint: %s}", fakeHostname) addImpersonatorConfigMapToTracker(configMapResourceName, configMapYAML, kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) startInformersAndController() }) it("makes a new CA cert, deletes the old TLS cert, and makes a new TLS cert using the new CA", func() { r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) // Check that the server is running and that TLS certs that are being served are are for fakeHostname. requireTLSServerIsRunning(ca, fakeHostname, map[string]string{fakeHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeHostname, ca)) // Simulate the informer cache's background update from its watch for the CA Secret. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) // Delete the CA Secret that was just created from the Kube API server. Note that we never // simulated it getting added to the informer cache, so we don't need to remove it from there. deleteSecretFromTracker(caSecretName, kubeAPIClient) // Run again. It should create both a new CA cert and a new TLS cert using the new CA cert. r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 6) ca = requireCASecretWasCreated(kubeAPIClient.Actions()[3]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[4]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[5], ca) // created using the new CA // Check that the server is running and that TLS certs that are being served are are for fakeHostname. requireTLSServerIsRunning(ca, fakeHostname, map[string]string{fakeHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeHostname, ca)) }) }) when("the CA cert is overwritten by another valid CA cert", func() { const fakeHostname = "fake.example.com" var caCrt []byte it.Before(func() { configMapYAML := fmt.Sprintf("{mode: enabled, endpoint: %s}", fakeHostname) addImpersonatorConfigMapToTracker(configMapResourceName, configMapYAML, kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) // Check that the server is running and that TLS certs that are being served are are for fakeHostname. requireTLSServerIsRunning(ca, fakeHostname, map[string]string{fakeHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeHostname, ca)) // Simulate the informer cache's background update from its watch for the CA Secret. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) // Simulate someone updating the CA Secret out of band, e.g. when a human edits it with kubectl. // Delete the CA Secret that was just created from the Kube API server. Note that we never // simulated it getting added to the informer cache, so we don't need to remove it from there. // Then add a new one. Delete + new = update, since only the final state is observed. deleteSecretFromTracker(caSecretName, kubeAPIClient) anotherCA := newCA() newCASecret := newActualCASecret(anotherCA, caSecretName) caCrt = newCASecret.Data["ca.crt"] addSecretToTrackers(newCASecret, kubeAPIClient) addObjectToInformerAndWait(newCASecret, kubeInformers.Core().V1().Secrets()) }) it("deletes the old TLS cert and makes a new TLS cert using the new CA", func() { // Run again. It should use the updated CA cert to create a new TLS cert. r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 5) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[3]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[4], caCrt) // created using the updated CA // Check that the server is running and that TLS certs that are being served are are for fakeHostname. requireTLSServerIsRunning(caCrt, fakeHostname, map[string]string{fakeHostname + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeHostname, caCrt)) }) when("deleting the TLS cert due to mismatched CA results in an error", func() { it.Before(func() { kubeAPIClient.PrependReactor("delete", "secrets", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { if action.(coretesting.DeleteAction).GetName() == tlsSecretName { return true, nil, fmt.Errorf("error on tls secret delete") } return false, nil, nil }) }) it("returns an error", func() { r.Error(runControllerSync(), "error on tls secret delete") r.Len(kubeAPIClient.Actions(), 4) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[3]) // tried to delete cert but failed requireCredentialIssuer(newErrorStrategy("error on tls secret delete")) }) }) }) }) when("the configuration switches from enabled to disabled mode", func() { it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "mode: enabled", kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("starts the impersonator and loadbalancer, then shuts it down, then starts it again", func() { startInformersAndController() r.NoError(runControllerSync()) requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireLoadBalancerWasCreated(kubeAPIClient.Actions()[1]) requireCASecretWasCreated(kubeAPIClient.Actions()[2]) requireCredentialIssuer(newPendingStrategy()) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Services()) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) // Update the configmap. updateImpersonatorConfigMapInInformerAndWait(configMapResourceName, "mode: disabled", kubeInformers.Core().V1().ConfigMaps()) r.NoError(runControllerSync()) requireTLSServerIsNoLongerRunning() r.Len(kubeAPIClient.Actions(), 4) requireLoadBalancerWasDeleted(kubeAPIClient.Actions()[3]) requireCredentialIssuer(newManuallyDisabledStrategy()) deleteServiceFromTracker(loadBalancerServiceName, kubeInformerClient) waitForObjectToBeDeletedFromInformer(loadBalancerServiceName, kubeInformers.Core().V1().Services()) // Update the configmap again. updateImpersonatorConfigMapInInformerAndWait(configMapResourceName, "mode: enabled", kubeInformers.Core().V1().ConfigMaps()) r.NoError(runControllerSync()) requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 5) requireLoadBalancerWasCreated(kubeAPIClient.Actions()[4]) requireCredentialIssuer(newPendingStrategy()) }) when("there is an error while shutting down the server", func() { it.Before(func() { startTLSListenerUponCloseError = errors.New("fake server close error") }) it("returns the error from the sync function", func() { startInformersAndController() r.NoError(runControllerSync()) requireTLSServerIsRunningWithoutCerts() // Update the configmap. updateImpersonatorConfigMapInInformerAndWait(configMapResourceName, "mode: disabled", kubeInformers.Core().V1().ConfigMaps()) r.EqualError(runControllerSync(), "fake server close error") requireTLSServerIsNoLongerRunning() requireCredentialIssuer(newErrorStrategy("fake server close error")) }) }) }) when("the endpoint switches from specified, to not specified, to specified again", func() { it.Before(func() { configMapYAML := fmt.Sprintf("{mode: enabled, endpoint: %s}", localhostIP) addImpersonatorConfigMapToTracker(configMapResourceName, configMapYAML, kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("doesn't create, then creates, then deletes the load balancer", func() { startInformersAndController() // Should have started in "enabled" mode with an "endpoint", so no load balancer is needed. r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) // created immediately because "endpoint" was specified requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) requireTLSServerIsRunning(ca, testServerAddr(), nil) requireCredentialIssuer(newSuccessStrategy(localhostIP, ca)) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Secrets()) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) // Switch to "enabled" mode without an "endpoint", so a load balancer is needed now. updateImpersonatorConfigMapInInformerAndWait(configMapResourceName, "mode: enabled", kubeInformers.Core().V1().ConfigMaps()) r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 5) requireLoadBalancerWasCreated(kubeAPIClient.Actions()[3]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[4]) // the Secret was deleted because it contained a cert with the wrong IP requireTLSServerIsRunningWithoutCerts() requireCredentialIssuer(newPendingStrategy()) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[3], kubeInformers.Core().V1().Services()) deleteSecretFromTracker(tlsSecretName, kubeInformerClient) waitForObjectToBeDeletedFromInformer(tlsSecretName, kubeInformers.Core().V1().Secrets()) // The controller should be waiting for the load balancer's ingress to become available. r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 5) // no new actions while it is waiting for the load balancer's ingress requireTLSServerIsRunningWithoutCerts() requireCredentialIssuer(newPendingStrategy()) // Update the ingress of the LB in the informer's client and run Sync again. fakeIP := "127.0.0.123" updateLoadBalancerServiceInInformerAndWait(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: fakeIP}}, kubeInformers.Core().V1().Services()) r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 6) requireTLSSecretWasCreated(kubeAPIClient.Actions()[5], ca) // reuses the existing CA // Check that the server is running and that TLS certs that are being served are are for fakeIP. requireTLSServerIsRunning(ca, fakeIP, map[string]string{fakeIP + httpsPort: testServerAddr()}) requireCredentialIssuer(newSuccessStrategy(fakeIP, ca)) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[5], kubeInformers.Core().V1().Secrets()) // Now switch back to having the "endpoint" specified, so the load balancer is not needed anymore. configMapYAML := fmt.Sprintf("{mode: enabled, endpoint: %s}", localhostIP) updateImpersonatorConfigMapInInformerAndWait(configMapResourceName, configMapYAML, kubeInformers.Core().V1().ConfigMaps()) r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 9) requireLoadBalancerWasDeleted(kubeAPIClient.Actions()[6]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[7]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[8], ca) // recreated because the endpoint was updated, reused the old CA requireTLSServerIsRunning(ca, testServerAddr(), nil) requireCredentialIssuer(newSuccessStrategy(localhostIP, ca)) }) }) }) when("sync is called more than once", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("only starts the impersonator once and only lists the cluster's nodes once", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireLoadBalancerWasCreated(kubeAPIClient.Actions()[1]) requireCASecretWasCreated(kubeAPIClient.Actions()[2]) requireTLSServerIsRunningWithoutCerts() requireCredentialIssuer(newPendingStrategy()) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Services()) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) r.NoError(runControllerSync()) r.Equal(1, startTLSListenerFuncWasCalled) // wasn't started a second time requireTLSServerIsRunningWithoutCerts() // still running requireCredentialIssuer(newPendingStrategy()) r.Len(kubeAPIClient.Actions(), 3) // no new API calls }) it("creates certs from the ip address listed on the load balancer", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireLoadBalancerWasCreated(kubeAPIClient.Actions()[1]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[2]) requireTLSServerIsRunningWithoutCerts() requireCredentialIssuer(newPendingStrategy()) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Services()) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) updateLoadBalancerServiceInInformerAndWait(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeInformers.Core().V1().Services()) r.NoError(runControllerSync()) r.Equal(1, startTLSListenerFuncWasCalled) // wasn't started a second time r.Len(kubeAPIClient.Actions(), 4) requireTLSSecretWasCreated(kubeAPIClient.Actions()[3], ca) // uses the ca from last time requireTLSServerIsRunning(ca, testServerAddr(), nil) // running with certs now requireCredentialIssuer(newSuccessStrategy(localhostIP, ca)) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[3], kubeInformers.Core().V1().Secrets()) r.NoError(runControllerSync()) r.Equal(1, startTLSListenerFuncWasCalled) // wasn't started again r.Len(kubeAPIClient.Actions(), 4) // no more actions requireTLSServerIsRunning(ca, testServerAddr(), nil) // still running requireCredentialIssuer(newSuccessStrategy(localhostIP, ca)) }) it("creates certs from the hostname listed on the load balancer", func() { hostname := "fake.example.com" startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireLoadBalancerWasCreated(kubeAPIClient.Actions()[1]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[2]) requireTLSServerIsRunningWithoutCerts() requireCredentialIssuer(newPendingStrategy()) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[1], kubeInformers.Core().V1().Services()) addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[2], kubeInformers.Core().V1().Secrets()) updateLoadBalancerServiceInInformerAndWait(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP, Hostname: hostname}}, kubeInformers.Core().V1().Services()) r.NoError(runControllerSync()) r.Equal(1, startTLSListenerFuncWasCalled) // wasn't started a second time r.Len(kubeAPIClient.Actions(), 4) requireTLSSecretWasCreated(kubeAPIClient.Actions()[3], ca) // uses the ca from last time requireTLSServerIsRunning(ca, hostname, map[string]string{hostname + httpsPort: testServerAddr()}) // running with certs now requireCredentialIssuer(newSuccessStrategy(hostname, ca)) // Simulate the informer cache's background update from its watch. addObjectFromCreateActionToInformerAndWait(kubeAPIClient.Actions()[3], kubeInformers.Core().V1().Secrets()) r.NoError(runControllerSync()) r.Equal(1, startTLSListenerFuncWasCalled) // wasn't started a third time r.Len(kubeAPIClient.Actions(), 4) // no more actions requireTLSServerIsRunning(ca, hostname, map[string]string{hostname + httpsPort: testServerAddr()}) // still running requireCredentialIssuer(newSuccessStrategy(hostname, ca)) }) }) when("getting the control plane nodes returns an error, e.g. when there are no nodes", func() { it("returns an error", func() { startInformersAndController() r.EqualError(runControllerSync(), "no nodes found") requireCredentialIssuer(newErrorStrategy("no nodes found")) requireTLSServerWasNeverStarted() }) }) when("the http handler factory function returns an error", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) httpHandlerFactoryFuncError = errors.New("some factory error") }) it("returns an error", func() { startInformersAndController() r.EqualError(runControllerSync(), "some factory error") requireCredentialIssuer(newErrorStrategy("some factory error")) requireTLSServerWasNeverStarted() }) }) when("the configmap is invalid", func() { it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "not yaml", kubeInformerClient) }) it("returns an error", func() { startInformersAndController() errString := "invalid impersonator configuration: decode yaml: error unmarshaling JSON: while decoding JSON: json: cannot unmarshal string into Go value of type impersonator.Config" r.EqualError(runControllerSync(), errString) requireCredentialIssuer(newErrorStrategy(errString)) requireTLSServerWasNeverStarted() }) }) when("there is an error creating the load balancer", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) kubeAPIClient.PrependReactor("create", "services", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { return true, nil, fmt.Errorf("error on create") }) }) it("returns an error", func() { startInformersAndController() r.EqualError(runControllerSync(), "error on create") requireCredentialIssuer(newErrorStrategy("error on create")) requireTLSServerIsRunningWithoutCerts() }) }) when("there is an error creating the tls secret", func() { it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "{mode: enabled, endpoint: example.com}", kubeInformerClient) addNodeWithRoleToTracker("control-plane", kubeAPIClient) kubeAPIClient.PrependReactor("create", "secrets", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { createdSecret := action.(coretesting.CreateAction).GetObject().(*corev1.Secret) if createdSecret.Name == tlsSecretName { return true, nil, fmt.Errorf("error on tls secret create") } return false, nil, nil }) }) it("starts the impersonator without certs and returns an error", func() { startInformersAndController() r.EqualError(runControllerSync(), "error on tls secret create") requireCredentialIssuer(newErrorStrategy("error on tls secret create")) requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], ca) }) }) when("there is an error creating the CA secret", func() { it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "{mode: enabled, endpoint: example.com}", kubeInformerClient) addNodeWithRoleToTracker("control-plane", kubeAPIClient) kubeAPIClient.PrependReactor("create", "secrets", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { createdSecret := action.(coretesting.CreateAction).GetObject().(*corev1.Secret) if createdSecret.Name == caSecretName { return true, nil, fmt.Errorf("error on ca secret create") } return false, nil, nil }) }) it("starts the impersonator without certs and returns an error", func() { startInformersAndController() r.EqualError(runControllerSync(), "error on ca secret create") requireCredentialIssuer(newErrorStrategy("error on ca secret create")) requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 2) requireNodesListed(kubeAPIClient.Actions()[0]) requireCASecretWasCreated(kubeAPIClient.Actions()[1]) }) }) when("the CA secret exists but is invalid while the TLS secret needs to be created", func() { it.Before(func() { addNodeWithRoleToTracker("control-plane", kubeAPIClient) addImpersonatorConfigMapToTracker(configMapResourceName, "{mode: enabled, endpoint: example.com}", kubeInformerClient) addSecretToTrackers(newEmptySecret(caSecretName), kubeAPIClient, kubeInformerClient) }) it("starts the impersonator without certs and returns an error", func() { startInformersAndController() errString := "could not load CA: tls: failed to find any PEM data in certificate input" r.EqualError(runControllerSync(), errString) requireCredentialIssuer(newErrorStrategy(errString)) requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 1) requireNodesListed(kubeAPIClient.Actions()[0]) }) }) when("there is an error deleting the tls secret", func() { it.Before(func() { addNodeWithRoleToTracker("control-plane", kubeAPIClient) addLoadBalancerServiceToTracker(loadBalancerServiceName, kubeInformerClient) addLoadBalancerServiceToTracker(loadBalancerServiceName, kubeAPIClient) addSecretToTrackers(newEmptySecret(tlsSecretName), kubeAPIClient, kubeInformerClient) startInformersAndController() kubeAPIClient.PrependReactor("delete", "secrets", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { return true, nil, fmt.Errorf("error on delete") }) }) it("does not start the impersonator, deletes the loadbalancer, returns an error", func() { r.EqualError(runControllerSync(), "error on delete") requireCredentialIssuer(newErrorStrategy("error on delete")) requireTLSServerWasNeverStarted() r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireLoadBalancerWasDeleted(kubeAPIClient.Actions()[1]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[2]) }) }) when("the PEM formatted data in the TLS Secret is not a valid cert", func() { it.Before(func() { configMapYAML := fmt.Sprintf("{mode: enabled, endpoint: %s}", localhostIP) addImpersonatorConfigMapToTracker(configMapResourceName, configMapYAML, kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) tlsSecret := &corev1.Secret{ ObjectMeta: metav1.ObjectMeta{ Name: tlsSecretName, Namespace: installedInNamespace, }, Data: map[string][]byte{ // "aGVsbG8gd29ybGQK" is "hello world" base64 encoded which is not a valid cert corev1.TLSCertKey: []byte("-----BEGIN CERTIFICATE-----\naGVsbG8gd29ybGQK\n-----END CERTIFICATE-----\n"), }, } addSecretToTrackers(tlsSecret, kubeAPIClient, kubeInformerClient) }) it("deletes the invalid certs, creates new certs, and starts the impersonator", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 4) requireNodesListed(kubeAPIClient.Actions()[0]) ca := requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[2]) // deleted the bad cert requireTLSSecretWasCreated(kubeAPIClient.Actions()[3], ca) requireTLSServerIsRunning(ca, testServerAddr(), nil) requireCredentialIssuer(newSuccessStrategy(localhostIP, ca)) }) when("there is an error while the invalid cert is being deleted", func() { it.Before(func() { kubeAPIClient.PrependReactor("delete", "secrets", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { return true, nil, fmt.Errorf("error on delete") }) }) it("tries to delete the invalid cert, starts the impersonator without certs, and returns an error", func() { startInformersAndController() errString := "PEM data represented an invalid cert, but got error while deleting it: error on delete" r.EqualError(runControllerSync(), errString) requireCredentialIssuer(newErrorStrategy(errString)) requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireCASecretWasCreated(kubeAPIClient.Actions()[1]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[2]) // tried deleted the bad cert, which failed requireTLSServerIsRunningWithoutCerts() }) }) }) when("a tls secret already exists but it is not valid", func() { var caCrt []byte it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "mode: enabled", kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) ca := newCA() caSecret := newActualCASecret(ca, caSecretName) caCrt = caSecret.Data["ca.crt"] addSecretToTrackers(caSecret, kubeAPIClient, kubeInformerClient) addSecretToTrackers(newEmptySecret(tlsSecretName), kubeAPIClient, kubeInformerClient) // secret exists but lacks certs addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeAPIClient) }) it("deletes the invalid certs, creates new certs, and starts the impersonator", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[1]) // deleted the bad cert requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], caCrt) requireTLSServerIsRunning(caCrt, testServerAddr(), nil) requireCredentialIssuer(newSuccessStrategy(localhostIP, caCrt)) }) when("there is an error while the invalid cert is being deleted", func() { it.Before(func() { kubeAPIClient.PrependReactor("delete", "secrets", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { return true, nil, fmt.Errorf("error on delete") }) }) it("tries to delete the invalid cert, starts the impersonator without certs, and returns an error", func() { startInformersAndController() errString := "found missing or not PEM-encoded data in TLS Secret, but got error while deleting it: error on delete" r.EqualError(runControllerSync(), errString) requireCredentialIssuer(newErrorStrategy(errString)) requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 2) requireNodesListed(kubeAPIClient.Actions()[0]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[1]) // tried deleted the bad cert, which failed requireTLSServerIsRunningWithoutCerts() }) }) }) when("a tls secret already exists but the private key is not valid", func() { var caCrt []byte it.Before(func() { addImpersonatorConfigMapToTracker(configMapResourceName, "mode: enabled", kubeInformerClient) addNodeWithRoleToTracker("worker", kubeAPIClient) ca := newCA() caSecret := newActualCASecret(ca, caSecretName) caCrt = caSecret.Data["ca.crt"] addSecretToTrackers(caSecret, kubeAPIClient, kubeInformerClient) tlsSecret := newActualTLSSecret(ca, tlsSecretName, localhostIP) tlsSecret.Data["tls.key"] = nil addSecretToTrackers(tlsSecret, kubeAPIClient, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeInformerClient) addLoadBalancerServiceWithIngressToTracker(loadBalancerServiceName, []corev1.LoadBalancerIngress{{IP: localhostIP}}, kubeAPIClient) }) it("deletes the invalid certs, creates new certs, and starts the impersonator", func() { startInformersAndController() r.NoError(runControllerSync()) r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[1]) // deleted the bad cert requireTLSSecretWasCreated(kubeAPIClient.Actions()[2], caCrt) requireTLSServerIsRunning(caCrt, testServerAddr(), nil) requireCredentialIssuer(newSuccessStrategy(localhostIP, caCrt)) }) when("there is an error while the invalid cert is being deleted", func() { it.Before(func() { kubeAPIClient.PrependReactor("delete", "secrets", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { return true, nil, fmt.Errorf("error on delete") }) }) it("tries to delete the invalid cert, starts the impersonator without certs, and returns an error", func() { startInformersAndController() errString := "cert had an invalid private key, but got error while deleting it: error on delete" r.EqualError(runControllerSync(), errString) requireCredentialIssuer(newErrorStrategy(errString)) requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 2) requireNodesListed(kubeAPIClient.Actions()[0]) requireTLSSecretWasDeleted(kubeAPIClient.Actions()[1]) // tried deleted the bad cert, which failed requireTLSServerIsRunningWithoutCerts() }) }) }) when("there is an error while creating or updating the CredentialIssuer status", func() { it.Before(func() { addNodeWithRoleToTracker("worker", kubeAPIClient) pinnipedAPIClient.PrependReactor("create", "credentialissuers", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { return true, nil, fmt.Errorf("error on create") }) }) it("returns the error", func() { startInformersAndController() r.EqualError(runControllerSync(), "could not create or update credentialissuer: create failed: error on create") }) when("there is also a more fundamental error while starting the impersonator", func() { it.Before(func() { kubeAPIClient.PrependReactor("create", "services", func(action coretesting.Action) (handled bool, ret runtime.Object, err error) { return true, nil, fmt.Errorf("error on service creation") }) }) it("returns the more fundamental error instead of the CredentialIssuer error", func() { startInformersAndController() r.EqualError(runControllerSync(), "error on service creation") }) }) }) when("there is already a CredentialIssuer", func() { preExistingStrategy := v1alpha1.CredentialIssuerStrategy{ Type: v1alpha1.KubeClusterSigningCertificateStrategyType, Status: v1alpha1.SuccessStrategyStatus, Reason: v1alpha1.FetchedKeyStrategyReason, Message: "happy other unrelated strategy", LastUpdateTime: metav1.NewTime(frozenNow), Frontend: &v1alpha1.CredentialIssuerFrontend{ Type: v1alpha1.TokenCredentialRequestAPIFrontendType, }, } it.Before(func() { r.NoError(pinnipedAPIClient.Tracker().Add(&v1alpha1.CredentialIssuer{ ObjectMeta: metav1.ObjectMeta{Name: credentialIssuerResourceName}, Status: v1alpha1.CredentialIssuerStatus{Strategies: []v1alpha1.CredentialIssuerStrategy{preExistingStrategy}}, })) addNodeWithRoleToTracker("worker", kubeAPIClient) }) it("merges into the existing strategy array on the CredentialIssuer", func() { startInformersAndController() r.NoError(runControllerSync()) requireTLSServerIsRunningWithoutCerts() r.Len(kubeAPIClient.Actions(), 3) requireNodesListed(kubeAPIClient.Actions()[0]) requireLoadBalancerWasCreated(kubeAPIClient.Actions()[1]) requireCASecretWasCreated(kubeAPIClient.Actions()[2]) credentialIssuer := getCredentialIssuer() r.Equal([]v1alpha1.CredentialIssuerStrategy{preExistingStrategy, newPendingStrategy()}, credentialIssuer.Status.Strategies) }) }) }, spec.Parallel(), spec.Report(report.Terminal{})) }