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Add glide.yaml and vendor deps

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This commit is contained in:
Dalton Hubble 2016-12-03 22:43:32 -08:00
parent db918f12ad
commit 5b3d5e81bd
18880 changed files with 5166045 additions and 1 deletions
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44
vendor/k8s.io/kubernetes/plugin/pkg/admission/namespace/autoprovision/BUILD generated vendored Normal file
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@ -0,0 +1,44 @@
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_binary",
"go_library",
"go_test",
"cgo_library",
)
go_library(
name = "go_default_library",
srcs = ["admission.go"],
tags = ["automanaged"],
deps = [
"//pkg/admission:go_default_library",
"//pkg/api:go_default_library",
"//pkg/api/errors:go_default_library",
"//pkg/client/cache:go_default_library",
"//pkg/client/clientset_generated/internalclientset:go_default_library",
"//pkg/controller/informers:go_default_library",
],
)
go_test(
name = "go_default_test",
srcs = ["admission_test.go"],
library = "go_default_library",
tags = ["automanaged"],
deps = [
"//pkg/admission:go_default_library",
"//pkg/api:go_default_library",
"//pkg/api/errors:go_default_library",
"//pkg/apis/meta/v1:go_default_library",
"//pkg/client/clientset_generated/internalclientset:go_default_library",
"//pkg/client/clientset_generated/internalclientset/fake:go_default_library",
"//pkg/client/testing/core:go_default_library",
"//pkg/controller/informers:go_default_library",
"//pkg/runtime:go_default_library",
"//pkg/util/wait:go_default_library",
],
)

100
vendor/k8s.io/kubernetes/plugin/pkg/admission/namespace/autoprovision/admission.go generated vendored Normal file
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@ -0,0 +1,100 @@
/*
Copyright 2014 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package autoprovision
import (
"io"
"k8s.io/kubernetes/pkg/client/cache"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"fmt"
"k8s.io/kubernetes/pkg/admission"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/controller/informers"
)
func init() {
admission.RegisterPlugin("NamespaceAutoProvision", func(client clientset.Interface, config io.Reader) (admission.Interface, error) {
return NewProvision(client), nil
})
}
// provision is an implementation of admission.Interface.
// It looks at all incoming requests in a namespace context, and if the namespace does not exist, it creates one.
// It is useful in deployments that do not want to restrict creation of a namespace prior to its usage.
type provision struct {
*admission.Handler
client clientset.Interface
namespaceInformer cache.SharedIndexInformer
}
var _ = admission.WantsInformerFactory(&provision{})
func (p *provision) Admit(a admission.Attributes) (err error) {
// if we're here, then we've already passed authentication, so we're allowed to do what we're trying to do
// if we're here, then the API server has found a route, which means that if we have a non-empty namespace
// its a namespaced resource.
if len(a.GetNamespace()) == 0 || a.GetKind().GroupKind() == api.Kind("Namespace") {
return nil
}
// we need to wait for our caches to warm
if !p.WaitForReady() {
return admission.NewForbidden(a, fmt.Errorf("not yet ready to handle request"))
}
namespace := &api.Namespace{
ObjectMeta: api.ObjectMeta{
Name: a.GetNamespace(),
Namespace: "",
},
Status: api.NamespaceStatus{},
}
_, exists, err := p.namespaceInformer.GetStore().Get(namespace)
if err != nil {
return admission.NewForbidden(a, err)
}
if exists {
return nil
}
_, err = p.client.Core().Namespaces().Create(namespace)
if err != nil && !errors.IsAlreadyExists(err) {
return admission.NewForbidden(a, err)
}
return nil
}
// NewProvision creates a new namespace provision admission control handler
func NewProvision(c clientset.Interface) admission.Interface {
return &provision{
Handler: admission.NewHandler(admission.Create),
client: c,
}
}
func (p *provision) SetInformerFactory(f informers.SharedInformerFactory) {
p.namespaceInformer = f.InternalNamespaces().Informer()
p.SetReadyFunc(p.namespaceInformer.HasSynced)
}
func (p *provision) Validate() error {
if p.namespaceInformer == nil {
return fmt.Errorf("missing namespaceInformer")
}
return nil
}

172
vendor/k8s.io/kubernetes/plugin/pkg/admission/namespace/autoprovision/admission_test.go generated vendored Normal file
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/*
Copyright 2014 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package autoprovision
import (
"fmt"
"testing"
"time"
"k8s.io/kubernetes/pkg/admission"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/errors"
metav1 "k8s.io/kubernetes/pkg/apis/meta/v1"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/fake"
"k8s.io/kubernetes/pkg/client/testing/core"
"k8s.io/kubernetes/pkg/controller/informers"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/util/wait"
)
// newHandlerForTest returns the admission controller configured for testing.
func newHandlerForTest(c clientset.Interface) (admission.Interface, informers.SharedInformerFactory, error) {
f := informers.NewSharedInformerFactory(nil, c, 5*time.Minute)
handler := NewProvision(c)
plugins := []admission.Interface{handler}
pluginInitializer := admission.NewPluginInitializer(f, nil)
pluginInitializer.Initialize(plugins)
err := admission.Validate(plugins)
return handler, f, err
}
// newMockClientForTest creates a mock client that returns a client configured for the specified list of namespaces.
func newMockClientForTest(namespaces []string) *fake.Clientset {
mockClient := &fake.Clientset{}
mockClient.AddReactor("list", "namespaces", func(action core.Action) (bool, runtime.Object, error) {
namespaceList := &api.NamespaceList{
ListMeta: metav1.ListMeta{
ResourceVersion: fmt.Sprintf("%d", len(namespaces)),
},
}
for i, ns := range namespaces {
namespaceList.Items = append(namespaceList.Items, api.Namespace{
ObjectMeta: api.ObjectMeta{
Name: ns,
ResourceVersion: fmt.Sprintf("%d", i),
},
})
}
return true, namespaceList, nil
})
return mockClient
}
// newPod returns a new pod for the specified namespace
func newPod(namespace string) api.Pod {
return api.Pod{
ObjectMeta: api.ObjectMeta{Name: "123", Namespace: namespace},
Spec: api.PodSpec{
Volumes: []api.Volume{{Name: "vol"}},
Containers: []api.Container{{Name: "ctr", Image: "image"}},
},
}
}
// hasCreateNamespaceAction returns true if it has the create namespace action
func hasCreateNamespaceAction(mockClient *fake.Clientset) bool {
for _, action := range mockClient.Actions() {
if action.GetVerb() == "create" && action.GetResource().Resource == "namespaces" {
return true
}
}
return false
}
// TestAdmission verifies a namespace is created on create requests for namespace managed resources
func TestAdmission(t *testing.T) {
namespace := "test"
mockClient := newMockClientForTest([]string{})
handler, informerFactory, err := newHandlerForTest(mockClient)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
pod := newPod(namespace)
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err != nil {
t.Errorf("unexpected error returned from admission handler")
}
if !hasCreateNamespaceAction(mockClient) {
t.Errorf("expected create namespace action")
}
}
// TestAdmissionNamespaceExists verifies that no client call is made when a namespace already exists
func TestAdmissionNamespaceExists(t *testing.T) {
namespace := "test"
mockClient := newMockClientForTest([]string{namespace})
handler, informerFactory, err := newHandlerForTest(mockClient)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
pod := newPod(namespace)
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err != nil {
t.Errorf("unexpected error returned from admission handler")
}
if hasCreateNamespaceAction(mockClient) {
t.Errorf("unexpected create namespace action")
}
}
// TestIgnoreAdmission validates that a request is ignored if its not a create
func TestIgnoreAdmission(t *testing.T) {
namespace := "test"
mockClient := newMockClientForTest([]string{})
handler, informerFactory, err := newHandlerForTest(mockClient)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
chainHandler := admission.NewChainHandler(handler)
pod := newPod(namespace)
err = chainHandler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Update, nil))
if err != nil {
t.Errorf("unexpected error returned from admission handler")
}
if hasCreateNamespaceAction(mockClient) {
t.Errorf("unexpected create namespace action")
}
}
func TestAdmissionWithLatentCache(t *testing.T) {
namespace := "test"
mockClient := newMockClientForTest([]string{})
mockClient.AddReactor("create", "namespaces", func(action core.Action) (bool, runtime.Object, error) {
return true, nil, errors.NewAlreadyExists(api.Resource("namespaces"), namespace)
})
handler, informerFactory, err := newHandlerForTest(mockClient)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
pod := newPod(namespace)
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err != nil {
t.Errorf("unexpected error returned from admission handler")
}
if !hasCreateNamespaceAction(mockClient) {
t.Errorf("expected create namespace action")
}
}

43
vendor/k8s.io/kubernetes/plugin/pkg/admission/namespace/exists/BUILD generated vendored Normal file
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@ -0,0 +1,43 @@
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_binary",
"go_library",
"go_test",
"cgo_library",
)
go_library(
name = "go_default_library",
srcs = ["admission.go"],
tags = ["automanaged"],
deps = [
"//pkg/admission:go_default_library",
"//pkg/api:go_default_library",
"//pkg/api/errors:go_default_library",
"//pkg/client/cache:go_default_library",
"//pkg/client/clientset_generated/internalclientset:go_default_library",
"//pkg/controller/informers:go_default_library",
],
)
go_test(
name = "go_default_test",
srcs = ["admission_test.go"],
library = "go_default_library",
tags = ["automanaged"],
deps = [
"//pkg/admission:go_default_library",
"//pkg/api:go_default_library",
"//pkg/apis/meta/v1:go_default_library",
"//pkg/client/clientset_generated/internalclientset:go_default_library",
"//pkg/client/clientset_generated/internalclientset/fake:go_default_library",
"//pkg/client/testing/core:go_default_library",
"//pkg/controller/informers:go_default_library",
"//pkg/runtime:go_default_library",
"//pkg/util/wait:go_default_library",
],
)

107
vendor/k8s.io/kubernetes/plugin/pkg/admission/namespace/exists/admission.go generated vendored Normal file
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@ -0,0 +1,107 @@
/*
Copyright 2014 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package exists
import (
"io"
"k8s.io/kubernetes/pkg/client/cache"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"fmt"
"k8s.io/kubernetes/pkg/admission"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/controller/informers"
)
func init() {
admission.RegisterPlugin("NamespaceExists", func(client clientset.Interface, config io.Reader) (admission.Interface, error) {
return NewExists(client), nil
})
}
// exists is an implementation of admission.Interface.
// It rejects all incoming requests in a namespace context if the namespace does not exist.
// It is useful in deployments that want to enforce pre-declaration of a Namespace resource.
type exists struct {
*admission.Handler
client clientset.Interface
namespaceInformer cache.SharedIndexInformer
}
var _ = admission.WantsInformerFactory(&exists{})
func (e *exists) Admit(a admission.Attributes) (err error) {
// if we're here, then we've already passed authentication, so we're allowed to do what we're trying to do
// if we're here, then the API server has found a route, which means that if we have a non-empty namespace
// its a namespaced resource.
if len(a.GetNamespace()) == 0 || a.GetKind().GroupKind() == api.Kind("Namespace") {
return nil
}
// we need to wait for our caches to warm
if !e.WaitForReady() {
return admission.NewForbidden(a, fmt.Errorf("not yet ready to handle request"))
}
namespace := &api.Namespace{
ObjectMeta: api.ObjectMeta{
Name: a.GetNamespace(),
Namespace: "",
},
Status: api.NamespaceStatus{},
}
_, exists, err := e.namespaceInformer.GetStore().Get(namespace)
if err != nil {
return errors.NewInternalError(err)
}
if exists {
return nil
}
// in case of latency in our caches, make a call direct to storage to verify that it truly exists or not
_, err = e.client.Core().Namespaces().Get(a.GetNamespace())
if err != nil {
if errors.IsNotFound(err) {
return err
}
return errors.NewInternalError(err)
}
return nil
}
// NewExists creates a new namespace exists admission control handler
func NewExists(c clientset.Interface) admission.Interface {
return &exists{
client: c,
Handler: admission.NewHandler(admission.Create, admission.Update, admission.Delete),
}
}
func (e *exists) SetInformerFactory(f informers.SharedInformerFactory) {
e.namespaceInformer = f.InternalNamespaces().Informer()
e.SetReadyFunc(e.namespaceInformer.HasSynced)
}
func (e *exists) Validate() error {
if e.namespaceInformer == nil {
return fmt.Errorf("missing namespaceInformer")
}
return nil
}

118
vendor/k8s.io/kubernetes/plugin/pkg/admission/namespace/exists/admission_test.go generated vendored Normal file
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@ -0,0 +1,118 @@
/*
Copyright 2014 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package exists
import (
"fmt"
"testing"
"time"
"k8s.io/kubernetes/pkg/admission"
"k8s.io/kubernetes/pkg/api"
metav1 "k8s.io/kubernetes/pkg/apis/meta/v1"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/fake"
"k8s.io/kubernetes/pkg/client/testing/core"
"k8s.io/kubernetes/pkg/controller/informers"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/util/wait"
)
// newHandlerForTest returns the admission controller configured for testing.
func newHandlerForTest(c clientset.Interface) (admission.Interface, informers.SharedInformerFactory, error) {
f := informers.NewSharedInformerFactory(nil, c, 5*time.Minute)
handler := NewExists(c)
plugins := []admission.Interface{handler}
pluginInitializer := admission.NewPluginInitializer(f, nil)
pluginInitializer.Initialize(plugins)
err := admission.Validate(plugins)
return handler, f, err
}
// newMockClientForTest creates a mock client that returns a client configured for the specified list of namespaces.
func newMockClientForTest(namespaces []string) *fake.Clientset {
mockClient := &fake.Clientset{}
mockClient.AddReactor("list", "namespaces", func(action core.Action) (bool, runtime.Object, error) {
namespaceList := &api.NamespaceList{
ListMeta: metav1.ListMeta{
ResourceVersion: fmt.Sprintf("%d", len(namespaces)),
},
}
for i, ns := range namespaces {
namespaceList.Items = append(namespaceList.Items, api.Namespace{
ObjectMeta: api.ObjectMeta{
Name: ns,
ResourceVersion: fmt.Sprintf("%d", i),
},
})
}
return true, namespaceList, nil
})
return mockClient
}
// newPod returns a new pod for the specified namespace
func newPod(namespace string) api.Pod {
return api.Pod{
ObjectMeta: api.ObjectMeta{Name: "123", Namespace: namespace},
Spec: api.PodSpec{
Volumes: []api.Volume{{Name: "vol"}},
Containers: []api.Container{{Name: "ctr", Image: "image"}},
},
}
}
// TestAdmissionNamespaceExists verifies pod is admitted only if namespace exists.
func TestAdmissionNamespaceExists(t *testing.T) {
namespace := "test"
mockClient := newMockClientForTest([]string{namespace})
handler, informerFactory, err := newHandlerForTest(mockClient)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
pod := newPod(namespace)
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err != nil {
t.Errorf("unexpected error returned from admission handler")
}
}
// TestAdmissionNamespaceDoesNotExist verifies pod is not admitted if namespace does not exist.
func TestAdmissionNamespaceDoesNotExist(t *testing.T) {
namespace := "test"
mockClient := newMockClientForTest([]string{})
mockClient.AddReactor("get", "namespaces", func(action core.Action) (bool, runtime.Object, error) {
return true, nil, fmt.Errorf("nope, out of luck")
})
handler, informerFactory, err := newHandlerForTest(mockClient)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
pod := newPod(namespace)
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err == nil {
actions := ""
for _, action := range mockClient.Actions() {
actions = actions + action.GetVerb() + ":" + action.GetResource().Resource + ":" + action.GetSubresource() + ", "
}
t.Errorf("expected error returned from admission handler: %v", actions)
}
}

49
vendor/k8s.io/kubernetes/plugin/pkg/admission/namespace/lifecycle/BUILD generated vendored Normal file
View file

@ -0,0 +1,49 @@
package(default_visibility = ["//visibility:public"])
licenses(["notice"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_binary",
"go_library",
"go_test",
"cgo_library",
)
go_library(
name = "go_default_library",
srcs = ["admission.go"],
tags = ["automanaged"],
deps = [
"//pkg/admission:go_default_library",
"//pkg/api:go_default_library",
"//pkg/api/errors:go_default_library",
"//pkg/client/cache:go_default_library",
"//pkg/client/clientset_generated/internalclientset:go_default_library",
"//pkg/controller/informers:go_default_library",
"//pkg/util/cache:go_default_library",
"//pkg/util/clock:go_default_library",
"//pkg/util/sets:go_default_library",
"//vendor:github.com/golang/glog",
],
)
go_test(
name = "go_default_test",
srcs = ["admission_test.go"],
library = "go_default_library",
tags = ["automanaged"],
deps = [
"//pkg/admission:go_default_library",
"//pkg/api:go_default_library",
"//pkg/apis/meta/v1:go_default_library",
"//pkg/client/clientset_generated/internalclientset:go_default_library",
"//pkg/client/clientset_generated/internalclientset/fake:go_default_library",
"//pkg/client/testing/core:go_default_library",
"//pkg/controller/informers:go_default_library",
"//pkg/runtime:go_default_library",
"//pkg/util/clock:go_default_library",
"//pkg/util/sets:go_default_library",
"//pkg/util/wait:go_default_library",
],
)

193
vendor/k8s.io/kubernetes/plugin/pkg/admission/namespace/lifecycle/admission.go generated vendored Normal file
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@ -0,0 +1,193 @@
/*
Copyright 2015 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package lifecycle
import (
"fmt"
"io"
"time"
"github.com/golang/glog"
"k8s.io/kubernetes/pkg/client/cache"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"k8s.io/kubernetes/pkg/controller/informers"
"k8s.io/kubernetes/pkg/admission"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/errors"
utilcache "k8s.io/kubernetes/pkg/util/cache"
"k8s.io/kubernetes/pkg/util/clock"
"k8s.io/kubernetes/pkg/util/sets"
)
const (
// Name of admission plug-in
PluginName = "NamespaceLifecycle"
// how long a namespace stays in the force live lookup cache before expiration.
forceLiveLookupTTL = 30 * time.Second
// how long to wait for a missing namespace before re-checking the cache (and then doing a live lookup)
// this accomplishes two things:
// 1. It allows a watch-fed cache time to observe a namespace creation event
// 2. It allows time for a namespace creation to distribute to members of a storage cluster,
// so the live lookup has a better chance of succeeding even if it isn't performed against the leader.
missingNamespaceWait = 50 * time.Millisecond
)
func init() {
admission.RegisterPlugin(PluginName, func(client clientset.Interface, config io.Reader) (admission.Interface, error) {
return NewLifecycle(client, sets.NewString(api.NamespaceDefault, api.NamespaceSystem))
})
}
// lifecycle is an implementation of admission.Interface.
// It enforces life-cycle constraints around a Namespace depending on its Phase
type lifecycle struct {
*admission.Handler
client clientset.Interface
immortalNamespaces sets.String
namespaceInformer cache.SharedIndexInformer
// forceLiveLookupCache holds a list of entries for namespaces that we have a strong reason to believe are stale in our local cache.
// if a namespace is in this cache, then we will ignore our local state and always fetch latest from api server.
forceLiveLookupCache *utilcache.LRUExpireCache
}
type forceLiveLookupEntry struct {
expiry time.Time
}
var _ = admission.WantsInformerFactory(&lifecycle{})
func makeNamespaceKey(namespace string) *api.Namespace {
return &api.Namespace{
ObjectMeta: api.ObjectMeta{
Name: namespace,
Namespace: "",
},
}
}
func (l *lifecycle) Admit(a admission.Attributes) error {
// prevent deletion of immortal namespaces
if a.GetOperation() == admission.Delete && a.GetKind().GroupKind() == api.Kind("Namespace") && l.immortalNamespaces.Has(a.GetName()) {
return errors.NewForbidden(a.GetResource().GroupResource(), a.GetName(), fmt.Errorf("this namespace may not be deleted"))
}
// if we're here, then we've already passed authentication, so we're allowed to do what we're trying to do
// if we're here, then the API server has found a route, which means that if we have a non-empty namespace
// its a namespaced resource.
if len(a.GetNamespace()) == 0 || a.GetKind().GroupKind() == api.Kind("Namespace") {
// if a namespace is deleted, we want to prevent all further creates into it
// while it is undergoing termination. to reduce incidences where the cache
// is slow to update, we add the namespace into a force live lookup list to ensure
// we are not looking at stale state.
if a.GetOperation() == admission.Delete {
l.forceLiveLookupCache.Add(a.GetName(), true, forceLiveLookupTTL)
}
return nil
}
// we need to wait for our caches to warm
if !l.WaitForReady() {
return admission.NewForbidden(a, fmt.Errorf("not yet ready to handle request"))
}
var (
namespaceObj interface{}
exists bool
err error
)
key := makeNamespaceKey(a.GetNamespace())
namespaceObj, exists, err = l.namespaceInformer.GetStore().Get(key)
if err != nil {
return errors.NewInternalError(err)
}
if !exists && a.GetOperation() == admission.Create {
// give the cache time to observe the namespace before rejecting a create.
// this helps when creating a namespace and immediately creating objects within it.
time.Sleep(missingNamespaceWait)
namespaceObj, exists, err = l.namespaceInformer.GetStore().Get(key)
if err != nil {
return errors.NewInternalError(err)
}
if exists {
glog.V(4).Infof("found %s in cache after waiting", a.GetNamespace())
}
}
// forceLiveLookup if true will skip looking at local cache state and instead always make a live call to server.
forceLiveLookup := false
if _, ok := l.forceLiveLookupCache.Get(a.GetNamespace()); ok {
// we think the namespace was marked for deletion, but our current local cache says otherwise, we will force a live lookup.
forceLiveLookup = exists && namespaceObj.(*api.Namespace).Status.Phase == api.NamespaceActive
}
// refuse to operate on non-existent namespaces
if !exists || forceLiveLookup {
// as a last resort, make a call directly to storage
namespaceObj, err = l.client.Core().Namespaces().Get(a.GetNamespace())
if err != nil {
if errors.IsNotFound(err) {
return err
}
return errors.NewInternalError(err)
}
glog.V(4).Infof("found %s via storage lookup", a.GetNamespace())
}
// ensure that we're not trying to create objects in terminating namespaces
if a.GetOperation() == admission.Create {
namespace := namespaceObj.(*api.Namespace)
if namespace.Status.Phase != api.NamespaceTerminating {
return nil
}
// TODO: This should probably not be a 403
return admission.NewForbidden(a, fmt.Errorf("unable to create new content in namespace %s because it is being terminated.", a.GetNamespace()))
}
return nil
}
// NewLifecycle creates a new namespace lifecycle admission control handler
func NewLifecycle(c clientset.Interface, immortalNamespaces sets.String) (admission.Interface, error) {
return newLifecycleWithClock(c, immortalNamespaces, clock.RealClock{})
}
func newLifecycleWithClock(c clientset.Interface, immortalNamespaces sets.String, clock utilcache.Clock) (admission.Interface, error) {
forceLiveLookupCache := utilcache.NewLRUExpireCacheWithClock(100, clock)
return &lifecycle{
Handler: admission.NewHandler(admission.Create, admission.Update, admission.Delete),
client: c,
immortalNamespaces: immortalNamespaces,
forceLiveLookupCache: forceLiveLookupCache,
}, nil
}
func (l *lifecycle) SetInformerFactory(f informers.SharedInformerFactory) {
l.namespaceInformer = f.InternalNamespaces().Informer()
l.SetReadyFunc(l.namespaceInformer.HasSynced)
}
func (l *lifecycle) Validate() error {
if l.namespaceInformer == nil {
return fmt.Errorf("missing namespaceInformer")
}
return nil
}

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vendor/k8s.io/kubernetes/plugin/pkg/admission/namespace/lifecycle/admission_test.go generated vendored Normal file
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@ -0,0 +1,258 @@
/*
Copyright 2015 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package lifecycle
import (
"fmt"
"testing"
"time"
"k8s.io/kubernetes/pkg/admission"
"k8s.io/kubernetes/pkg/api"
metav1 "k8s.io/kubernetes/pkg/apis/meta/v1"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/fake"
"k8s.io/kubernetes/pkg/client/testing/core"
"k8s.io/kubernetes/pkg/controller/informers"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/util/clock"
"k8s.io/kubernetes/pkg/util/sets"
"k8s.io/kubernetes/pkg/util/wait"
)
// newHandlerForTest returns a configured handler for testing.
func newHandlerForTest(c clientset.Interface) (admission.Interface, informers.SharedInformerFactory, error) {
return newHandlerForTestWithClock(c, clock.RealClock{})
}
// newHandlerForTestWithClock returns a configured handler for testing.
func newHandlerForTestWithClock(c clientset.Interface, cacheClock clock.Clock) (admission.Interface, informers.SharedInformerFactory, error) {
f := informers.NewSharedInformerFactory(nil, c, 5*time.Minute)
handler, err := newLifecycleWithClock(c, sets.NewString(api.NamespaceDefault, api.NamespaceSystem), cacheClock)
if err != nil {
return nil, f, err
}
plugins := []admission.Interface{handler}
pluginInitializer := admission.NewPluginInitializer(f, nil)
pluginInitializer.Initialize(plugins)
err = admission.Validate(plugins)
return handler, f, err
}
// newMockClientForTest creates a mock client that returns a client configured for the specified list of namespaces with the specified phase.
func newMockClientForTest(namespaces map[string]api.NamespacePhase) *fake.Clientset {
mockClient := &fake.Clientset{}
mockClient.AddReactor("list", "namespaces", func(action core.Action) (bool, runtime.Object, error) {
namespaceList := &api.NamespaceList{
ListMeta: metav1.ListMeta{
ResourceVersion: fmt.Sprintf("%d", len(namespaces)),
},
}
index := 0
for name, phase := range namespaces {
namespaceList.Items = append(namespaceList.Items, api.Namespace{
ObjectMeta: api.ObjectMeta{
Name: name,
ResourceVersion: fmt.Sprintf("%d", index),
},
Status: api.NamespaceStatus{
Phase: phase,
},
})
index++
}
return true, namespaceList, nil
})
return mockClient
}
// newPod returns a new pod for the specified namespace
func newPod(namespace string) api.Pod {
return api.Pod{
ObjectMeta: api.ObjectMeta{Name: "123", Namespace: namespace},
Spec: api.PodSpec{
Volumes: []api.Volume{{Name: "vol"}},
Containers: []api.Container{{Name: "ctr", Image: "image"}},
},
}
}
// TestAdmissionNamespaceDoesNotExist verifies pod is not admitted if namespace does not exist.
func TestAdmissionNamespaceDoesNotExist(t *testing.T) {
namespace := "test"
mockClient := newMockClientForTest(map[string]api.NamespacePhase{})
mockClient.AddReactor("get", "namespaces", func(action core.Action) (bool, runtime.Object, error) {
return true, nil, fmt.Errorf("nope, out of luck")
})
handler, informerFactory, err := newHandlerForTest(mockClient)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
pod := newPod(namespace)
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err == nil {
actions := ""
for _, action := range mockClient.Actions() {
actions = actions + action.GetVerb() + ":" + action.GetResource().Resource + ":" + action.GetSubresource() + ", "
}
t.Errorf("expected error returned from admission handler: %v", actions)
}
}
// TestAdmissionNamespaceActive verifies a resource is admitted when the namespace is active.
func TestAdmissionNamespaceActive(t *testing.T) {
namespace := "test"
mockClient := newMockClientForTest(map[string]api.NamespacePhase{
namespace: api.NamespaceActive,
})
handler, informerFactory, err := newHandlerForTest(mockClient)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
pod := newPod(namespace)
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err != nil {
t.Errorf("unexpected error returned from admission handler")
}
}
// TestAdmissionNamespaceTerminating verifies a resource is not created when the namespace is active.
func TestAdmissionNamespaceTerminating(t *testing.T) {
namespace := "test"
mockClient := newMockClientForTest(map[string]api.NamespacePhase{
namespace: api.NamespaceTerminating,
})
handler, informerFactory, err := newHandlerForTest(mockClient)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
pod := newPod(namespace)
// verify create operations in the namespace cause an error
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err == nil {
t.Errorf("Expected error rejecting creates in a namespace when it is terminating")
}
// verify update operations in the namespace can proceed
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Update, nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler: %v", err)
}
// verify delete operations in the namespace can proceed
err = handler.Admit(admission.NewAttributesRecord(nil, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Delete, nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler: %v", err)
}
// verify delete of namespace default can never proceed
err = handler.Admit(admission.NewAttributesRecord(nil, nil, api.Kind("Namespace").WithVersion("version"), "", api.NamespaceDefault, api.Resource("namespaces").WithVersion("version"), "", admission.Delete, nil))
if err == nil {
t.Errorf("Expected an error that this namespace can never be deleted")
}
// verify delete of namespace other than default can proceed
err = handler.Admit(admission.NewAttributesRecord(nil, nil, api.Kind("Namespace").WithVersion("version"), "", "other", api.Resource("namespaces").WithVersion("version"), "", admission.Delete, nil))
if err != nil {
t.Errorf("Did not expect an error %v", err)
}
}
// TestAdmissionNamespaceForceLiveLookup verifies live lookups are done after deleting a namespace
func TestAdmissionNamespaceForceLiveLookup(t *testing.T) {
namespace := "test"
getCalls := int64(0)
phases := map[string]api.NamespacePhase{namespace: api.NamespaceActive}
mockClient := newMockClientForTest(phases)
mockClient.AddReactor("get", "namespaces", func(action core.Action) (bool, runtime.Object, error) {
getCalls++
return true, &api.Namespace{ObjectMeta: api.ObjectMeta{Name: namespace}, Status: api.NamespaceStatus{Phase: phases[namespace]}}, nil
})
fakeClock := clock.NewFakeClock(time.Now())
handler, informerFactory, err := newHandlerForTestWithClock(mockClient, fakeClock)
if err != nil {
t.Errorf("unexpected error initializing handler: %v", err)
}
informerFactory.Start(wait.NeverStop)
pod := newPod(namespace)
// verify create operations in the namespace is allowed
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err != nil {
t.Errorf("Unexpected error rejecting creates in an active namespace")
}
if getCalls != 0 {
t.Errorf("Expected no live lookups of the namespace, got %d", getCalls)
}
getCalls = 0
// verify delete of namespace can proceed
err = handler.Admit(admission.NewAttributesRecord(nil, nil, api.Kind("Namespace").WithVersion("version"), "", namespace, api.Resource("namespaces").WithVersion("version"), "", admission.Delete, nil))
if err != nil {
t.Errorf("Expected namespace deletion to be allowed")
}
if getCalls != 0 {
t.Errorf("Expected no live lookups of the namespace, got %d", getCalls)
}
getCalls = 0
// simulate the phase changing
phases[namespace] = api.NamespaceTerminating
// verify create operations in the namespace cause an error
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err == nil {
t.Errorf("Expected error rejecting creates in a namespace right after deleting it")
}
if getCalls != 1 {
t.Errorf("Expected a live lookup of the namespace at t=0, got %d", getCalls)
}
getCalls = 0
// Ensure the live lookup is still forced up to forceLiveLookupTTL
fakeClock.Step(forceLiveLookupTTL)
// verify create operations in the namespace cause an error
err = handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if err == nil {
t.Errorf("Expected error rejecting creates in a namespace right after deleting it")
}
if getCalls != 1 {
t.Errorf("Expected a live lookup of the namespace at t=forceLiveLookupTTL, got %d", getCalls)
}
getCalls = 0
// Ensure the live lookup expires
fakeClock.Step(time.Millisecond)
// verify create operations in the namespace don't force a live lookup after the timeout
handler.Admit(admission.NewAttributesRecord(&pod, nil, api.Kind("Pod").WithVersion("version"), pod.Namespace, pod.Name, api.Resource("pods").WithVersion("version"), "", admission.Create, nil))
if getCalls != 0 {
t.Errorf("Expected no live lookup of the namespace at t=forceLiveLookupTTL+1ms, got %d", getCalls)
}
getCalls = 0
}