Prefactor: Move updating of APIService to a separate controller

- The certs manager controller, along with its sibling certs expirer
  and certs observer controllers, are generally useful for any process
  that wants to create its own CA and TLS certs, but only if the
  updating of the APIService is not included in those controllers
- So that functionality for updating APIServices is moved to a new
  controller which watches the same Secret which is used by those
  other controllers
- Also parameterize `NewCertsManagerController` with the service name
  and the CA common name to make the controller more reusable
This commit is contained in:
Ryan Richard 2020-09-08 16:36:49 -07:00
parent 3d09afbfb3
commit 20b21e8639
10 changed files with 460 additions and 151 deletions

12
go.sum
View File

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@ -435,6 +438,7 @@ github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWb
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@ -490,6 +494,7 @@ github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40T
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@ -784,11 +793,13 @@ golang.org/x/tools v0.0.0-20200626171337-aa94e735be7f/go.mod h1:EkVYQZoAsY45+roY
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golang.org/x/tools v0.0.0-20200724022722-7017fd6b1305/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA= golang.org/x/tools v0.0.0-20200724022722-7017fd6b1305/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
golang.org/x/tools v0.0.0-20200812195022-5ae4c3c160a0 h1:SQvH+DjrwqD1hyyQU+K7JegHz1KEZgEwt17p9d6R2eg=
golang.org/x/tools v0.0.0-20200812195022-5ae4c3c160a0/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA= golang.org/x/tools v0.0.0-20200812195022-5ae4c3c160a0/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4= golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE= google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M= google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
@ -872,6 +883,7 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg= honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
honnef.co/go/tools v0.0.1-2020.1.4 h1:UoveltGrhghAA7ePc+e+QYDHXrBps2PqFZiHkGR/xK8= honnef.co/go/tools v0.0.1-2020.1.4 h1:UoveltGrhghAA7ePc+e+QYDHXrBps2PqFZiHkGR/xK8=
honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k= honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
honnef.co/go/tools v0.0.1-2020.1.5 h1:nI5egYTGJakVyOryqLs1cQO5dO0ksin5XXs2pspk75k=
honnef.co/go/tools v0.0.1-2020.1.5/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k= honnef.co/go/tools v0.0.1-2020.1.5/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
k8s.io/api v0.19.0 h1:XyrFIJqTYZJ2DU7FBE/bSPz7b1HvbVBuBf07oeo6eTc= k8s.io/api v0.19.0 h1:XyrFIJqTYZJ2DU7FBE/bSPz7b1HvbVBuBf07oeo6eTc=
k8s.io/api v0.19.0/go.mod h1:I1K45XlvTrDjmj5LoM5LuP/KYrhWbjUKT/SoPG0qTjw= k8s.io/api v0.19.0/go.mod h1:I1K45XlvTrDjmj5LoM5LuP/KYrhWbjUKT/SoPG0qTjw=

View File

@ -0,0 +1,69 @@
/*
Copyright 2020 VMware, Inc.
SPDX-License-Identifier: Apache-2.0
*/
package apicerts
import (
"fmt"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
corev1informers "k8s.io/client-go/informers/core/v1"
"k8s.io/klog/v2"
aggregatorclient "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset"
pinnipedcontroller "github.com/suzerain-io/pinniped/internal/controller"
"github.com/suzerain-io/pinniped/internal/controllerlib"
)
type apiServiceUpdaterController struct {
namespace string
aggregatorClient aggregatorclient.Interface
secretInformer corev1informers.SecretInformer
}
func NewAPIServiceUpdaterController(
namespace string,
aggregatorClient aggregatorclient.Interface,
secretInformer corev1informers.SecretInformer,
withInformer pinnipedcontroller.WithInformerOptionFunc,
) controllerlib.Controller {
return controllerlib.New(
controllerlib.Config{
Name: "certs-manager-controller",
Syncer: &apiServiceUpdaterController{
namespace: namespace,
aggregatorClient: aggregatorClient,
secretInformer: secretInformer,
},
},
withInformer(
secretInformer,
pinnipedcontroller.NameAndNamespaceExactMatchFilterFactory(certsSecretName, namespace),
controllerlib.InformerOption{},
),
)
}
func (c *apiServiceUpdaterController) Sync(ctx controllerlib.Context) error {
// Try to get the secret from the informer cache.
certSecret, err := c.secretInformer.Lister().Secrets(c.namespace).Get(certsSecretName)
notFound := k8serrors.IsNotFound(err)
if err != nil && !notFound {
return fmt.Errorf("failed to get %s/%s secret: %w", c.namespace, certsSecretName, err)
}
if notFound {
// The secret does not exist yet, so nothing to do.
klog.Info("apiServiceUpdaterController Sync found that the secret does not exist yet or was deleted")
return nil
}
// Update the APIService to give it the new CA bundle.
if err := UpdateAPIService(ctx.Context, c.aggregatorClient, certSecret.Data[caCertificateSecretKey]); err != nil {
return fmt.Errorf("could not update the API service: %w", err)
}
klog.Info("apiServiceUpdaterController Sync successfully updated API service")
return nil
}

View File

@ -0,0 +1,277 @@
/*
Copyright 2020 VMware, Inc.
SPDX-License-Identifier: Apache-2.0
*/
package apicerts
import (
"context"
"errors"
"testing"
"time"
"github.com/sclevine/spec"
"github.com/sclevine/spec/report"
"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"
kubeinformers "k8s.io/client-go/informers"
kubernetesfake "k8s.io/client-go/kubernetes/fake"
coretesting "k8s.io/client-go/testing"
apiregistrationv1 "k8s.io/kube-aggregator/pkg/apis/apiregistration/v1"
aggregatorfake "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/fake"
pinnipedv1alpha1 "github.com/suzerain-io/pinniped/generated/1.19/apis/pinniped/v1alpha1"
"github.com/suzerain-io/pinniped/internal/controllerlib"
"github.com/suzerain-io/pinniped/internal/testutil"
)
func TestAPIServiceUpdaterControllerOptions(t *testing.T) {
spec.Run(t, "options", func(t *testing.T, when spec.G, it spec.S) {
const installedInNamespace = "some-namespace"
var r *require.Assertions
var observableWithInformerOption *testutil.ObservableWithInformerOption
var secretsInformerFilter controllerlib.Filter
it.Before(func() {
r = require.New(t)
observableWithInformerOption = testutil.NewObservableWithInformerOption()
secretsInformer := kubeinformers.NewSharedInformerFactory(nil, 0).Core().V1().Secrets()
_ = NewAPIServiceUpdaterController(
installedInNamespace,
nil,
secretsInformer,
observableWithInformerOption.WithInformer, // make it possible to observe the behavior of the Filters
)
secretsInformerFilter = observableWithInformerOption.GetFilterForInformer(secretsInformer)
})
when("watching Secret objects", func() {
var subject controllerlib.Filter
var target, wrongNamespace, wrongName, unrelated *corev1.Secret
it.Before(func() {
subject = secretsInformerFilter
target = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: "api-serving-cert", Namespace: installedInNamespace}}
wrongNamespace = &corev1.Secret{ObjectMeta: metav1.ObjectMeta{Name: "api-serving-cert", 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("the target Secret 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 Secret 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 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))
})
})
})
}, spec.Parallel(), spec.Report(report.Terminal{}))
}
func TestAPIServiceUpdaterControllerSync(t *testing.T) {
spec.Run(t, "Sync", func(t *testing.T, when spec.G, it spec.S) {
const installedInNamespace = "some-namespace"
var r *require.Assertions
var subject controllerlib.Controller
var aggregatorAPIClient *aggregatorfake.Clientset
var kubeInformerClient *kubernetesfake.Clientset
var kubeInformers kubeinformers.SharedInformerFactory
var timeoutContext context.Context
var timeoutContextCancel context.CancelFunc
var syncContext *controllerlib.Context
// 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 = NewAPIServiceUpdaterController(
installedInNamespace,
aggregatorAPIClient,
kubeInformers.Core().V1().Secrets(),
controllerlib.WithInformer,
)
// Set this at the last second to support calling subject.Name().
syncContext = &controllerlib.Context{
Context: timeoutContext,
Name: subject.Name(),
Key: controllerlib.Key{
Namespace: installedInNamespace,
Name: "api-serving-cert",
},
}
// Must start informers before calling TestRunSynchronously()
kubeInformers.Start(timeoutContext.Done())
controllerlib.TestRunSynchronously(t, subject)
}
it.Before(func() {
r = require.New(t)
timeoutContext, timeoutContextCancel = context.WithTimeout(context.Background(), time.Second*3)
kubeInformerClient = kubernetesfake.NewSimpleClientset()
kubeInformers = kubeinformers.NewSharedInformerFactory(kubeInformerClient, 0)
aggregatorAPIClient = aggregatorfake.NewSimpleClientset()
})
it.After(func() {
timeoutContextCancel()
})
when("there is not yet an api-serving-cert Secret in the installation namespace or it was deleted", func() {
it.Before(func() {
unrelatedSecret := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: "some other secret",
Namespace: installedInNamespace,
},
}
err := kubeInformerClient.Tracker().Add(unrelatedSecret)
r.NoError(err)
})
it("does not need to make any API calls with its API client", func() {
startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext)
r.NoError(err)
r.Empty(aggregatorAPIClient.Actions())
})
})
when("there is an api-serving-cert Secret already in the installation namespace", func() {
it.Before(func() {
apiServingCertSecret := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: "api-serving-cert",
Namespace: installedInNamespace,
},
Data: map[string][]byte{
"caCertificate": []byte("fake CA cert"),
"tlsPrivateKey": []byte("fake private key"),
"tlsCertificateChain": []byte("fake cert chain"),
},
}
err := kubeInformerClient.Tracker().Add(apiServingCertSecret)
r.NoError(err)
})
when("the APIService exists", func() {
it.Before(func() {
apiService := &apiregistrationv1.APIService{
ObjectMeta: metav1.ObjectMeta{
Name: pinnipedv1alpha1.SchemeGroupVersion.Version + "." + pinnipedv1alpha1.GroupName,
},
Spec: apiregistrationv1.APIServiceSpec{
CABundle: nil,
VersionPriority: 1234,
},
}
err := aggregatorAPIClient.Tracker().Add(apiService)
r.NoError(err)
})
it("updates the APIService's ca bundle", func() {
startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext)
r.NoError(err)
// Make sure we updated the APIService caBundle and left it otherwise unchanged
r.Len(aggregatorAPIClient.Actions(), 2)
r.Equal("get", aggregatorAPIClient.Actions()[0].GetVerb())
expectedAPIServiceName := pinnipedv1alpha1.SchemeGroupVersion.Version + "." + pinnipedv1alpha1.GroupName
expectedUpdateAction := coretesting.NewUpdateAction(
schema.GroupVersionResource{
Group: apiregistrationv1.GroupName,
Version: "v1",
Resource: "apiservices",
},
"",
&apiregistrationv1.APIService{
ObjectMeta: metav1.ObjectMeta{
Name: expectedAPIServiceName,
Namespace: "",
},
Spec: apiregistrationv1.APIServiceSpec{
VersionPriority: 1234, // only the CABundle is updated, this other field is left unchanged
CABundle: []byte("fake CA cert"),
},
},
)
r.Equal(expectedUpdateAction, aggregatorAPIClient.Actions()[1])
})
when("updating the APIService fails", func() {
it.Before(func() {
aggregatorAPIClient.PrependReactor(
"update",
"apiservices",
func(_ coretesting.Action) (bool, runtime.Object, error) {
return true, nil, errors.New("update failed")
},
)
})
it("returns the update error", func() {
startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext)
r.EqualError(err, "could not update the API service: could not update API service: update failed")
})
})
})
when("the APIService does not exist", func() {
it.Before(func() {
unrelatedAPIService := &apiregistrationv1.APIService{
ObjectMeta: metav1.ObjectMeta{Name: "some other api service"},
Spec: apiregistrationv1.APIServiceSpec{},
}
err := aggregatorAPIClient.Tracker().Add(unrelatedAPIService)
r.NoError(err)
})
it("returns an error", func() {
startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext)
r.Error(err)
r.Regexp("could not get existing version of API service: .* not found", err.Error())
})
})
})
}, spec.Parallel(), spec.Report(report.Terminal{}))
}

View File

@ -69,7 +69,7 @@ func (c *certsExpirerController) Sync(ctx controllerlib.Context) error {
return fmt.Errorf("failed to get %s/%s secret: %w", c.namespace, certsSecretName, err) return fmt.Errorf("failed to get %s/%s secret: %w", c.namespace, certsSecretName, err)
} }
if notFound { if notFound {
klog.Info("certsExpirerController Sync() found that the secret does not exist yet or was deleted") klog.Info("certsExpirerController Sync found that the secret does not exist yet or was deleted")
return nil return nil
} }
@ -78,13 +78,13 @@ func (c *certsExpirerController) Sync(ctx controllerlib.Context) error {
// If we can't read the cert, then really all we can do is log something, // If we can't read the cert, then really all we can do is log something,
// since if we returned an error then the controller lib would just call us // since if we returned an error then the controller lib would just call us
// again and again, which would probably yield the same results. // again and again, which would probably yield the same results.
klog.Warningf("certsExpirerController Sync() found that the secret is malformed: %s", err.Error()) klog.Warningf("certsExpirerController Sync found that the secret is malformed: %s", err.Error())
return nil return nil
} }
certAge := time.Since(notBefore) certAge := time.Since(notBefore)
renewDelta := certAge - c.renewBefore renewDelta := certAge - c.renewBefore
klog.Infof("certsExpirerController Sync() found a renew delta of %s", renewDelta) klog.Infof("certsExpirerController Sync found a renew delta of %s", renewDelta)
if renewDelta >= 0 || time.Now().After(notAfter) { if renewDelta >= 0 || time.Now().After(notAfter) {
err := c.k8sClient. err := c.k8sClient.
CoreV1(). CoreV1().

View File

@ -16,7 +16,6 @@ import (
corev1informers "k8s.io/client-go/informers/core/v1" corev1informers "k8s.io/client-go/informers/core/v1"
"k8s.io/client-go/kubernetes" "k8s.io/client-go/kubernetes"
"k8s.io/klog/v2" "k8s.io/klog/v2"
aggregatorclient "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset"
"github.com/suzerain-io/pinniped/internal/certauthority" "github.com/suzerain-io/pinniped/internal/certauthority"
pinnipedcontroller "github.com/suzerain-io/pinniped/internal/controller" pinnipedcontroller "github.com/suzerain-io/pinniped/internal/controller"
@ -34,22 +33,24 @@ const (
type certsManagerController struct { type certsManagerController struct {
namespace string namespace string
k8sClient kubernetes.Interface k8sClient kubernetes.Interface
aggregatorClient aggregatorclient.Interface
secretInformer corev1informers.SecretInformer secretInformer corev1informers.SecretInformer
// certDuration is the lifetime of both the serving certificate and its CA // certDuration is the lifetime of both the serving certificate and its CA
// certificate that this controller will use when issuing the certificates. // certificate that this controller will use when issuing the certificates.
certDuration time.Duration certDuration time.Duration
generatedCACommonName string
serviceNameForGeneratedCertCommonName string
} }
func NewCertsManagerController( func NewCertsManagerController(namespace string,
namespace string,
k8sClient kubernetes.Interface, k8sClient kubernetes.Interface,
aggregatorClient aggregatorclient.Interface,
secretInformer corev1informers.SecretInformer, secretInformer corev1informers.SecretInformer,
withInformer pinnipedcontroller.WithInformerOptionFunc, withInformer pinnipedcontroller.WithInformerOptionFunc,
withInitialEvent pinnipedcontroller.WithInitialEventOptionFunc, withInitialEvent pinnipedcontroller.WithInitialEventOptionFunc,
certDuration time.Duration, certDuration time.Duration,
generatedCACommonName string,
serviceNameForGeneratedCertCommonName string,
) controllerlib.Controller { ) controllerlib.Controller {
return controllerlib.New( return controllerlib.New(
controllerlib.Config{ controllerlib.Config{
@ -57,9 +58,10 @@ func NewCertsManagerController(
Syncer: &certsManagerController{ Syncer: &certsManagerController{
namespace: namespace, namespace: namespace,
k8sClient: k8sClient, k8sClient: k8sClient,
aggregatorClient: aggregatorClient,
secretInformer: secretInformer, secretInformer: secretInformer,
certDuration: certDuration, certDuration: certDuration,
generatedCACommonName: generatedCACommonName,
serviceNameForGeneratedCertCommonName: serviceNameForGeneratedCertCommonName,
}, },
}, },
withInformer( withInformer(
@ -88,16 +90,13 @@ func (c *certsManagerController) Sync(ctx controllerlib.Context) error {
} }
// Create a CA. // Create a CA.
aggregatedAPIServerCA, err := certauthority.New(pkix.Name{CommonName: "Pinniped CA"}, c.certDuration) aggregatedAPIServerCA, err := certauthority.New(pkix.Name{CommonName: c.generatedCACommonName}, c.certDuration)
if err != nil { if err != nil {
return fmt.Errorf("could not initialize CA: %w", err) return fmt.Errorf("could not initialize CA: %w", err)
} }
// This string must match the name of the Service declared in the deployment yaml.
const serviceName = "pinniped-api"
// Using the CA from above, create a TLS server cert for the aggregated API server to use. // Using the CA from above, create a TLS server cert for the aggregated API server to use.
serviceEndpoint := serviceName + "." + c.namespace + ".svc" serviceEndpoint := c.serviceNameForGeneratedCertCommonName + "." + c.namespace + ".svc"
aggregatedAPIServerTLSCert, err := aggregatedAPIServerCA.Issue( aggregatedAPIServerTLSCert, err := aggregatedAPIServerCA.Issue(
pkix.Name{CommonName: serviceEndpoint}, pkix.Name{CommonName: serviceEndpoint},
[]string{serviceEndpoint}, []string{serviceEndpoint},
@ -129,11 +128,6 @@ func (c *certsManagerController) Sync(ctx controllerlib.Context) error {
return fmt.Errorf("could not create secret: %w", err) return fmt.Errorf("could not create secret: %w", err)
} }
// Update the APIService to give it the new CA bundle. klog.Info("certsManagerController Sync successfully created secret")
if err := UpdateAPIService(ctx.Context, c.aggregatorClient, aggregatedAPIServerCA.Bundle()); err != nil {
return fmt.Errorf("could not update the API service: %w", err)
}
klog.Info("certsManagerController Sync successfully created secret and updated API service")
return nil return nil
} }

View File

@ -21,10 +21,7 @@ import (
kubeinformers "k8s.io/client-go/informers" kubeinformers "k8s.io/client-go/informers"
kubernetesfake "k8s.io/client-go/kubernetes/fake" kubernetesfake "k8s.io/client-go/kubernetes/fake"
coretesting "k8s.io/client-go/testing" coretesting "k8s.io/client-go/testing"
apiregistrationv1 "k8s.io/kube-aggregator/pkg/apis/apiregistration/v1"
aggregatorfake "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset/fake"
pinnipedv1alpha1 "github.com/suzerain-io/pinniped/generated/1.19/apis/pinniped/v1alpha1"
"github.com/suzerain-io/pinniped/internal/controllerlib" "github.com/suzerain-io/pinniped/internal/controllerlib"
"github.com/suzerain-io/pinniped/internal/testutil" "github.com/suzerain-io/pinniped/internal/testutil"
) )
@ -43,15 +40,7 @@ func TestManagerControllerOptions(t *testing.T) {
observableWithInformerOption = testutil.NewObservableWithInformerOption() observableWithInformerOption = testutil.NewObservableWithInformerOption()
observableWithInitialEventOption = testutil.NewObservableWithInitialEventOption() observableWithInitialEventOption = testutil.NewObservableWithInitialEventOption()
secretsInformer := kubeinformers.NewSharedInformerFactory(nil, 0).Core().V1().Secrets() secretsInformer := kubeinformers.NewSharedInformerFactory(nil, 0).Core().V1().Secrets()
_ = NewCertsManagerController( _ = NewCertsManagerController(installedInNamespace, nil, secretsInformer, observableWithInformerOption.WithInformer, observableWithInitialEventOption.WithInitialEvent, 0, "Pinniped CA", "pinniped-api")
installedInNamespace,
nil,
nil,
secretsInformer,
observableWithInformerOption.WithInformer, // make it possible to observe the behavior of the Filters
observableWithInitialEventOption.WithInitialEvent, // make it possible to observe the behavior of the initial event
0, // certDuration, not needed for this test
)
secretsInformerFilter = observableWithInformerOption.GetFilterForInformer(secretsInformer) secretsInformerFilter = observableWithInformerOption.GetFilterForInformer(secretsInformer)
}) })
@ -123,7 +112,6 @@ func TestManagerControllerSync(t *testing.T) {
var subject controllerlib.Controller var subject controllerlib.Controller
var kubeAPIClient *kubernetesfake.Clientset var kubeAPIClient *kubernetesfake.Clientset
var aggregatorAPIClient *aggregatorfake.Clientset
var kubeInformerClient *kubernetesfake.Clientset var kubeInformerClient *kubernetesfake.Clientset
var kubeInformers kubeinformers.SharedInformerFactory var kubeInformers kubeinformers.SharedInformerFactory
var timeoutContext context.Context var timeoutContext context.Context
@ -137,11 +125,12 @@ func TestManagerControllerSync(t *testing.T) {
subject = NewCertsManagerController( subject = NewCertsManagerController(
installedInNamespace, installedInNamespace,
kubeAPIClient, kubeAPIClient,
aggregatorAPIClient,
kubeInformers.Core().V1().Secrets(), kubeInformers.Core().V1().Secrets(),
controllerlib.WithInformer, controllerlib.WithInformer,
controllerlib.WithInitialEvent, controllerlib.WithInitialEvent,
certDuration, certDuration,
"Pinniped CA",
"pinniped-api",
) )
// Set this at the last second to support calling subject.Name(). // Set this at the last second to support calling subject.Name().
@ -167,7 +156,6 @@ func TestManagerControllerSync(t *testing.T) {
kubeInformerClient = kubernetesfake.NewSimpleClientset() kubeInformerClient = kubernetesfake.NewSimpleClientset()
kubeInformers = kubeinformers.NewSharedInformerFactory(kubeInformerClient, 0) kubeInformers = kubeinformers.NewSharedInformerFactory(kubeInformerClient, 0)
kubeAPIClient = kubernetesfake.NewSimpleClientset() kubeAPIClient = kubernetesfake.NewSimpleClientset()
aggregatorAPIClient = aggregatorfake.NewSimpleClientset()
}) })
it.After(func() { it.After(func() {
@ -186,22 +174,7 @@ func TestManagerControllerSync(t *testing.T) {
r.NoError(err) r.NoError(err)
}) })
when("the APIService exists", func() { it("creates the api-serving-cert Secret", func() {
it.Before(func() {
apiService := &apiregistrationv1.APIService{
ObjectMeta: metav1.ObjectMeta{
Name: pinnipedv1alpha1.SchemeGroupVersion.Version + "." + pinnipedv1alpha1.GroupName,
},
Spec: apiregistrationv1.APIServiceSpec{
CABundle: nil,
VersionPriority: 1234,
},
}
err := aggregatorAPIClient.Tracker().Add(apiService)
r.NoError(err)
})
it("creates the api-serving-cert Secret and updates the APIService's ca bundle", func() {
startInformersAndController() startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext) err := controllerlib.TestSync(t, subject, *syncContext)
r.NoError(err) r.NoError(err)
@ -230,67 +203,6 @@ func TestManagerControllerSync(t *testing.T) {
validCert.RequireDNSName("pinniped-api." + installedInNamespace + ".svc") validCert.RequireDNSName("pinniped-api." + installedInNamespace + ".svc")
validCert.RequireLifetime(time.Now(), time.Now().Add(certDuration), 6*time.Minute) validCert.RequireLifetime(time.Now(), time.Now().Add(certDuration), 6*time.Minute)
validCert.RequireMatchesPrivateKey(actualPrivateKey) validCert.RequireMatchesPrivateKey(actualPrivateKey)
// Make sure we updated the APIService caBundle and left it otherwise unchanged
r.Len(aggregatorAPIClient.Actions(), 2)
r.Equal("get", aggregatorAPIClient.Actions()[0].GetVerb())
expectedAPIServiceName := pinnipedv1alpha1.SchemeGroupVersion.Version + "." + pinnipedv1alpha1.GroupName
expectedUpdateAction := coretesting.NewUpdateAction(
schema.GroupVersionResource{
Group: apiregistrationv1.GroupName,
Version: "v1",
Resource: "apiservices",
},
"",
&apiregistrationv1.APIService{
ObjectMeta: metav1.ObjectMeta{
Name: expectedAPIServiceName,
Namespace: "",
},
Spec: apiregistrationv1.APIServiceSpec{
VersionPriority: 1234, // only the CABundle is updated, this other field is left unchanged
CABundle: []byte(actualCACert),
},
},
)
r.Equal(expectedUpdateAction, aggregatorAPIClient.Actions()[1])
})
when("updating the APIService fails", func() {
it.Before(func() {
aggregatorAPIClient.PrependReactor(
"update",
"apiservices",
func(_ coretesting.Action) (bool, runtime.Object, error) {
return true, nil, errors.New("update failed")
},
)
})
it("returns the update error", func() {
startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext)
r.EqualError(err, "could not update the API service: could not update API service: update failed")
})
})
})
when("the APIService does not exist", func() {
it.Before(func() {
unrelatedAPIService := &apiregistrationv1.APIService{
ObjectMeta: metav1.ObjectMeta{Name: "some other api service"},
Spec: apiregistrationv1.APIServiceSpec{},
}
err := aggregatorAPIClient.Tracker().Add(unrelatedAPIService)
r.NoError(err)
})
it("returns an error", func() {
startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext)
r.Error(err)
r.Regexp("could not get existing version of API service: .* not found", err.Error())
})
}) })
when("creating the Secret fails", func() { when("creating the Secret fails", func() {
@ -304,11 +216,10 @@ func TestManagerControllerSync(t *testing.T) {
) )
}) })
it("returns the create error and does not update the APIService", func() { it("returns the create error", func() {
startInformersAndController() startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext) err := controllerlib.TestSync(t, subject, *syncContext)
r.EqualError(err, "could not create secret: create failed") r.EqualError(err, "could not create secret: create failed")
r.Empty(aggregatorAPIClient.Actions())
}) })
}) })
}) })
@ -325,12 +236,11 @@ func TestManagerControllerSync(t *testing.T) {
r.NoError(err) r.NoError(err)
}) })
it("does not need to make any API calls with its API clients", func() { it("does not need to make any API calls with its API client", func() {
startInformersAndController() startInformersAndController()
err := controllerlib.TestSync(t, subject, *syncContext) err := controllerlib.TestSync(t, subject, *syncContext)
r.NoError(err) r.NoError(err)
r.Empty(kubeAPIClient.Actions()) r.Empty(kubeAPIClient.Actions())
r.Empty(aggregatorAPIClient.Actions())
}) })
}) })
}, spec.Parallel(), spec.Report(report.Terminal{})) }, spec.Parallel(), spec.Report(report.Terminal{}))

View File

@ -54,7 +54,7 @@ func (c *certsObserverController) Sync(_ controllerlib.Context) error {
return fmt.Errorf("failed to get %s/%s secret: %w", c.namespace, certsSecretName, err) return fmt.Errorf("failed to get %s/%s secret: %w", c.namespace, certsSecretName, err)
} }
if notFound { if notFound {
klog.Info("certsObserverController Sync() found that the secret does not exist yet or was deleted") klog.Info("certsObserverController Sync found that the secret does not exist yet or was deleted")
// The secret does not exist yet or was deleted. // The secret does not exist yet or was deleted.
c.dynamicCertProvider.Set(nil, nil) c.dynamicCertProvider.Set(nil, nil)
return nil return nil

View File

@ -6,6 +6,7 @@ SPDX-License-Identifier: Apache-2.0
package apicerts package apicerts
import ( import (
"bytes"
"context" "context"
"fmt" "fmt"
@ -28,6 +29,11 @@ func UpdateAPIService(ctx context.Context, aggregatorClient aggregatorclient.Int
return fmt.Errorf("could not get existing version of API service: %w", err) return fmt.Errorf("could not get existing version of API service: %w", err)
} }
if bytes.Equal(fetchedAPIService.Spec.CABundle, aggregatedAPIServerCA) {
// Already has the same value, perhaps because another process already updated the object, so no need to update.
return nil
}
// Update just the field we care about. // Update just the field we care about.
fetchedAPIService.Spec.CABundle = aggregatedAPIServerCA fetchedAPIService.Spec.CABundle = aggregatedAPIServerCA

View File

@ -70,17 +70,44 @@ func TestUpdateAPIService(t *testing.T) {
}, },
}}, }},
}, },
{
name: "happy path update when the pre-existing APIService already has the same CA bundle so there is no need to update",
mocks: func(c *aggregatorv1fake.Clientset) {
_ = c.Tracker().Add(&apiregistrationv1.APIService{
ObjectMeta: metav1.ObjectMeta{Name: apiServiceName},
Spec: apiregistrationv1.APIServiceSpec{
GroupPriorityMinimum: 999,
CABundle: []byte("some-ca-bundle"),
},
})
c.PrependReactor("update", "apiservices", func(_ kubetesting.Action) (bool, runtime.Object, error) {
return true, nil, fmt.Errorf("should not encounter this error because update should be skipped in this case")
})
},
caInput: []byte("some-ca-bundle"),
wantObjects: []apiregistrationv1.APIService{{
ObjectMeta: metav1.ObjectMeta{Name: apiServiceName},
Spec: apiregistrationv1.APIServiceSpec{
GroupPriorityMinimum: 999,
CABundle: []byte("some-ca-bundle"), // unchanged
},
}},
},
{ {
name: "error on update", name: "error on update",
mocks: func(c *aggregatorv1fake.Clientset) { mocks: func(c *aggregatorv1fake.Clientset) {
_ = c.Tracker().Add(&apiregistrationv1.APIService{ _ = c.Tracker().Add(&apiregistrationv1.APIService{
ObjectMeta: metav1.ObjectMeta{Name: apiServiceName}, ObjectMeta: metav1.ObjectMeta{Name: apiServiceName},
Spec: apiregistrationv1.APIServiceSpec{}, Spec: apiregistrationv1.APIServiceSpec{
GroupPriorityMinimum: 999,
CABundle: []byte("some-other-different-ca-bundle"),
},
}) })
c.PrependReactor("update", "apiservices", func(_ kubetesting.Action) (bool, runtime.Object, error) { c.PrependReactor("update", "apiservices", func(_ kubetesting.Action) (bool, runtime.Object, error) {
return true, nil, fmt.Errorf("error on update") return true, nil, fmt.Errorf("error on update")
}) })
}, },
caInput: []byte("some-ca-bundle"),
wantErr: "could not update API service: error on update", wantErr: "could not update API service: error on update",
}, },
{ {
@ -143,6 +170,7 @@ func TestUpdateAPIService(t *testing.T) {
}}, }},
}, },
} }
for _, tt := range tests { for _, tt := range tests {
tt := tt tt := tt
t.Run(tt.name, func(t *testing.T) { t.Run(tt.name, func(t *testing.T) {

View File

@ -47,6 +47,9 @@ func PrepareControllers(
kubePublicNamespaceK8sInformers, installationNamespaceK8sInformers, installationNamespacePinnipedInformers := kubePublicNamespaceK8sInformers, installationNamespaceK8sInformers, installationNamespacePinnipedInformers :=
createInformers(serverInstallationNamespace, k8sClient, pinnipedClient) createInformers(serverInstallationNamespace, k8sClient, pinnipedClient)
// This string must match the name of the Service declared in the deployment yaml.
const serviceName = "pinniped-api"
// Create controller manager. // Create controller manager.
controllerManager := controllerlib. controllerManager := controllerlib.
NewManager(). NewManager().
@ -65,11 +68,21 @@ func PrepareControllers(
apicerts.NewCertsManagerController( apicerts.NewCertsManagerController(
serverInstallationNamespace, serverInstallationNamespace,
k8sClient, k8sClient,
aggregatorClient,
installationNamespaceK8sInformers.Core().V1().Secrets(), installationNamespaceK8sInformers.Core().V1().Secrets(),
controllerlib.WithInformer, controllerlib.WithInformer,
controllerlib.WithInitialEvent, controllerlib.WithInitialEvent,
servingCertDuration, servingCertDuration,
"Pinniped CA",
serviceName,
),
singletonWorker,
).
WithController(
apicerts.NewAPIServiceUpdaterController(
serverInstallationNamespace,
aggregatorClient,
installationNamespaceK8sInformers.Core().V1().Secrets(),
controllerlib.WithInformer,
), ),
singletonWorker, singletonWorker,
). ).