Replace godep with dep

vendor/k8s.io/kubernetes/plugin/pkg/admission/initialization/BUILD

@@ -0,0 +1,59 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["initialization.go"],
+    deps = [
+        "//pkg/api:go_default_library",
+        "//pkg/kubeapiserver/admission/configuration:go_default_library",
+        "//vendor/github.com/golang/glog:go_default_library",
+        "//vendor/k8s.io/api/admissionregistration/v1alpha1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/meta:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/validation:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/validation/field:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/admission:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/authorization/authorizer:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/features:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/util/feature:go_default_library",
+        "//vendor/k8s.io/client-go/kubernetes:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["initialization_test.go"],
+    library = ":go_default_library",
+    deps = [
+        "//vendor/k8s.io/api/admissionregistration/v1alpha1:go_default_library",
+        "//vendor/k8s.io/api/core/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/api/meta:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/admission:go_default_library",
+        "//vendor/k8s.io/apiserver/pkg/authorization/authorizer:go_default_library",
+    ],
+)

vendor/k8s.io/kubernetes/plugin/pkg/admission/initialization/initialization.go

@@ -0,0 +1,349 @@
+/*
+Copyright 2017 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 initialization
+
+import (
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/golang/glog"
+
+	"k8s.io/api/admissionregistration/v1alpha1"
+	"k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/api/validation"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/util/validation/field"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/apiserver/pkg/admission"
+	"k8s.io/apiserver/pkg/authorization/authorizer"
+	"k8s.io/apiserver/pkg/features"
+	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/kubeapiserver/admission/configuration"
+)
+
+// Register registers a plugin
+func Register(plugins *admission.Plugins) {
+	plugins.Register("Initializers", func(config io.Reader) (admission.Interface, error) {
+		return NewInitializer(), nil
+	})
+}
+
+type initializerOptions struct {
+	Initializers []string
+}
+
+type InitializationConfig interface {
+	Run(stopCh <-chan struct{})
+	Initializers() (*v1alpha1.InitializerConfiguration, error)
+}
+
+type initializer struct {
+	config     InitializationConfig
+	authorizer authorizer.Authorizer
+}
+
+// NewInitializer creates a new initializer plugin which assigns newly created resources initializers
+// based on configuration loaded from the admission API group.
+// FUTURE: this may be moved to the storage layer of the apiserver, but for now this is an alpha feature
+//   that can be disabled.
+func NewInitializer() admission.Interface {
+	return &initializer{}
+}
+
+func (i *initializer) Validate() error {
+	if i.config == nil {
+		return fmt.Errorf("the Initializer admission plugin requires a Kubernetes client to be provided")
+	}
+	if i.authorizer == nil {
+		return fmt.Errorf("the Initializer admission plugin requires an authorizer to be provided")
+	}
+
+	if !utilfeature.DefaultFeatureGate.Enabled(features.Initializers) {
+		if err := utilfeature.DefaultFeatureGate.Set(string(features.Initializers) + "=true"); err != nil {
+			glog.Errorf("error enabling Initializers feature as part of admission plugin setup: %v", err)
+		} else {
+			glog.Infof("enabled Initializers feature as part of admission plugin setup")
+		}
+	}
+
+	i.config.Run(wait.NeverStop)
+	return nil
+}
+
+func (i *initializer) SetExternalKubeClientSet(client clientset.Interface) {
+	i.config = configuration.NewInitializerConfigurationManager(client.Admissionregistration().InitializerConfigurations())
+}
+
+func (i *initializer) SetAuthorizer(a authorizer.Authorizer) {
+	i.authorizer = a
+}
+
+var initializerFieldPath = field.NewPath("metadata", "initializers")
+
+// readConfig holds requests instead of failing them if the server is not yet initialized
+// or is unresponsive. It formats the returned error for client use if necessary.
+func (i *initializer) readConfig(a admission.Attributes) (*v1alpha1.InitializerConfiguration, error) {
+	// read initializers from config
+	config, err := i.config.Initializers()
+	if err == nil {
+		return config, nil
+	}
+
+	// if initializer configuration is disabled, fail open
+	if err == configuration.ErrDisabled {
+		return &v1alpha1.InitializerConfiguration{}, nil
+	}
+
+	e := errors.NewServerTimeout(a.GetResource().GroupResource(), "create", 1)
+	if err == configuration.ErrNotReady {
+		e.ErrStatus.Message = fmt.Sprintf("Waiting for initialization configuration to load: %v", err)
+		e.ErrStatus.Reason = "LoadingConfiguration"
+		e.ErrStatus.Details.Causes = append(e.ErrStatus.Details.Causes, metav1.StatusCause{
+			Type:    "InitializerConfigurationPending",
+			Message: "The server is waiting for the initializer configuration to be loaded.",
+		})
+	} else {
+		e.ErrStatus.Message = fmt.Sprintf("Unable to refresh the initializer configuration: %v", err)
+		e.ErrStatus.Reason = "LoadingConfiguration"
+		e.ErrStatus.Details.Causes = append(e.ErrStatus.Details.Causes, metav1.StatusCause{
+			Type:    "InitializerConfigurationFailure",
+			Message: "An error has occurred while refreshing the initializer configuration, no resources can be created until a refresh succeeds.",
+		})
+	}
+	return nil, e
+}
+
+// Admit checks for create requests to add initializers, or update request to enforce invariants.
+// The admission controller fails open if the object doesn't have ObjectMeta (can't be initialized).
+// A client with sufficient permission ("initialize" verb on resource) can specify its own initializers
+// or an empty initializers struct (which bypasses initialization). Only clients with the initialize verb
+// can update objects that have not completed initialization. Sub resources can still be modified on
+// resources that are undergoing initialization.
+// TODO: once this logic is ready for beta, move it into the REST storage layer.
+func (i *initializer) Admit(a admission.Attributes) (err error) {
+	switch a.GetOperation() {
+	case admission.Create, admission.Update:
+	default:
+		return nil
+	}
+
+	// TODO: should sub-resource action should be denied until the object is initialized?
+	if len(a.GetSubresource()) > 0 {
+		return nil
+	}
+
+	switch a.GetOperation() {
+	case admission.Create:
+		accessor, err := meta.Accessor(a.GetObject())
+		if err != nil {
+			// objects without meta accessor cannot be checked for initialization, and it is possible to make calls
+			// via our API that don't have ObjectMeta
+			return nil
+		}
+		existing := accessor.GetInitializers()
+		if existing != nil {
+			glog.V(5).Infof("Admin bypassing initialization for %s", a.GetResource())
+
+			// it must be possible for some users to bypass initialization - for now, check the initialize operation
+			if err := i.canInitialize(a, "create with initializers denied"); err != nil {
+				return err
+			}
+			// allow administrators to bypass initialization by setting an empty initializers struct
+			if len(existing.Pending) == 0 && existing.Result == nil {
+				accessor.SetInitializers(nil)
+				return nil
+			}
+		} else {
+			glog.V(5).Infof("Checking initialization for %s", a.GetResource())
+
+			config, err := i.readConfig(a)
+			if err != nil {
+				return err
+			}
+
+			// Mirror pods are exempt from initialization because they are created and initialized
+			// on the Kubelet before they appear in the API.
+			// TODO: once this moves to REST storage layer, this becomes a pod specific concern
+			if pod, ok := a.GetObject().(*api.Pod); ok && pod != nil {
+				if _, isMirror := pod.Annotations[api.MirrorPodAnnotationKey]; isMirror {
+					return nil
+				}
+			}
+
+			names := findInitializers(config, a.GetResource())
+			if len(names) == 0 {
+				glog.V(5).Infof("No initializers needed")
+				return nil
+			}
+
+			glog.V(5).Infof("Found initializers for %s: %v", a.GetResource(), names)
+			accessor.SetInitializers(newInitializers(names))
+		}
+
+	case admission.Update:
+		accessor, err := meta.Accessor(a.GetObject())
+		if err != nil {
+			// objects without meta accessor cannot be checked for initialization, and it is possible to make calls
+			// via our API that don't have ObjectMeta
+			return nil
+		}
+		updated := accessor.GetInitializers()
+
+		existingAccessor, err := meta.Accessor(a.GetOldObject())
+		if err != nil {
+			// if the old object does not have an accessor, but the new one does, error out
+			return fmt.Errorf("initialized resources must be able to set initializers (%T): %v", a.GetOldObject(), err)
+		}
+		existing := existingAccessor.GetInitializers()
+
+		// updates on initialized resources are allowed
+		if updated == nil && existing == nil {
+			return nil
+		}
+
+		glog.V(5).Infof("Modifying uninitialized resource %s", a.GetResource())
+
+		if updated != nil && len(updated.Pending) == 0 && updated.Result == nil {
+			accessor.SetInitializers(nil)
+		}
+		// because we are called before validation, we need to ensure the update transition is valid.
+		if errs := validation.ValidateInitializersUpdate(updated, existing, initializerFieldPath); len(errs) > 0 {
+			return errors.NewInvalid(a.GetKind().GroupKind(), a.GetName(), errs)
+		}
+
+		// caller must have the ability to mutate un-initialized resources
+		if err := i.canInitialize(a, "update to uninitialized resource denied"); err != nil {
+			return err
+		}
+
+		// TODO: restrict initialization list changes to specific clients?
+	}
+
+	return nil
+}
+
+func (i *initializer) canInitialize(a admission.Attributes, message string) error {
+	// caller must have the ability to mutate un-initialized resources
+	authorized, reason, err := i.authorizer.Authorize(authorizer.AttributesRecord{
+		Name:            a.GetName(),
+		ResourceRequest: true,
+		User:            a.GetUserInfo(),
+		Verb:            "initialize",
+		Namespace:       a.GetNamespace(),
+		APIGroup:        a.GetResource().Group,
+		APIVersion:      a.GetResource().Version,
+		Resource:        a.GetResource().Resource,
+	})
+	if err != nil {
+		return err
+	}
+	if !authorized {
+		return errors.NewForbidden(a.GetResource().GroupResource(), a.GetName(), fmt.Errorf("%s: %s", message, reason))
+	}
+	return nil
+}
+
+func (i *initializer) Handles(op admission.Operation) bool {
+	return op == admission.Create || op == admission.Update
+}
+
+// newInitializers populates an Initializers struct.
+func newInitializers(names []string) *metav1.Initializers {
+	if len(names) == 0 {
+		return nil
+	}
+	var init []metav1.Initializer
+	for _, name := range names {
+		init = append(init, metav1.Initializer{Name: name})
+	}
+	return &metav1.Initializers{
+		Pending: init,
+	}
+}
+
+// findInitializers returns the list of initializer names that apply to a config. It returns an empty list
+// if no initializers apply.
+func findInitializers(initializers *v1alpha1.InitializerConfiguration, gvr schema.GroupVersionResource) []string {
+	var names []string
+	for _, init := range initializers.Initializers {
+		if !matchRule(init.Rules, gvr) {
+			continue
+		}
+		names = append(names, init.Name)
+	}
+	return names
+}
+
+// matchRule returns true if any rule matches the provided group version resource.
+func matchRule(rules []v1alpha1.Rule, gvr schema.GroupVersionResource) bool {
+	for _, rule := range rules {
+		if !hasGroup(rule.APIGroups, gvr.Group) {
+			return false
+		}
+		if !hasVersion(rule.APIVersions, gvr.Version) {
+			return false
+		}
+		if !hasResource(rule.Resources, gvr.Resource) {
+			return false
+		}
+	}
+	return len(rules) > 0
+}
+
+func hasGroup(groups []string, group string) bool {
+	if groups[0] == "*" {
+		return true
+	}
+	for _, g := range groups {
+		if g == group {
+			return true
+		}
+	}
+	return false
+}
+
+func hasVersion(versions []string, version string) bool {
+	if versions[0] == "*" {
+		return true
+	}
+	for _, v := range versions {
+		if v == version {
+			return true
+		}
+	}
+	return false
+}
+
+func hasResource(resources []string, resource string) bool {
+	if resources[0] == "*" || resources[0] == "*/*" {
+		return true
+	}
+	for _, r := range resources {
+		if strings.Contains(r, "/") {
+			continue
+		}
+		if r == resource {
+			return true
+		}
+	}
+	return false
+}

vendor/k8s.io/kubernetes/plugin/pkg/admission/initialization/initialization_test.go

@@ -0,0 +1,178 @@
+/*
+Copyright 2017 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 initialization
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+
+	"k8s.io/api/admissionregistration/v1alpha1"
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/meta"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apiserver/pkg/admission"
+	"k8s.io/apiserver/pkg/authorization/authorizer"
+)
+
+func newInitializer(name string, rules ...v1alpha1.Rule) *v1alpha1.InitializerConfiguration {
+	return addInitializer(&v1alpha1.InitializerConfiguration{}, name, rules...)
+}
+
+func addInitializer(base *v1alpha1.InitializerConfiguration, name string, rules ...v1alpha1.Rule) *v1alpha1.InitializerConfiguration {
+	base.Initializers = append(base.Initializers, v1alpha1.Initializer{
+		Name:  name,
+		Rules: rules,
+	})
+	return base
+}
+
+func TestFindInitializers(t *testing.T) {
+	type args struct {
+		initializers *v1alpha1.InitializerConfiguration
+		gvr          schema.GroupVersionResource
+	}
+	tests := []struct {
+		name string
+		args args
+		want []string
+	}{
+		{
+			name: "empty",
+			args: args{
+				gvr:          schema.GroupVersionResource{},
+				initializers: newInitializer("1"),
+			},
+		},
+		{
+			name: "everything",
+			args: args{
+				gvr:          schema.GroupVersionResource{},
+				initializers: newInitializer("1", v1alpha1.Rule{APIGroups: []string{"*"}, APIVersions: []string{"*"}, Resources: []string{"*"}}),
+			},
+			want: []string{"1"},
+		},
+		{
+			name: "empty group",
+			args: args{
+				gvr:          schema.GroupVersionResource{},
+				initializers: newInitializer("1", v1alpha1.Rule{APIGroups: []string{""}, APIVersions: []string{"*"}, Resources: []string{"*"}}),
+			},
+			want: []string{"1"},
+		},
+		{
+			name: "pod",
+			args: args{
+				gvr: schema.GroupVersionResource{Resource: "pods"},
+				initializers: addInitializer(
+					newInitializer("1", v1alpha1.Rule{APIGroups: []string{""}, APIVersions: []string{"*"}, Resources: []string{"pods"}}),
+					"2", v1alpha1.Rule{APIGroups: []string{""}, APIVersions: []string{"*"}, Resources: []string{"pods"}},
+				),
+			},
+			want: []string{"1", "2"},
+		},
+		{
+			name: "multiple matches",
+			args: args{
+				gvr:          schema.GroupVersionResource{Resource: "pods"},
+				initializers: newInitializer("1", v1alpha1.Rule{APIGroups: []string{""}, APIVersions: []string{"*"}, Resources: []string{"pods"}}),
+			},
+			want: []string{"1"},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := findInitializers(tt.args.initializers, tt.args.gvr); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("findInitializers() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+type fakeAuthorizer struct {
+	accept bool
+}
+
+func (f *fakeAuthorizer) Authorize(a authorizer.Attributes) (bool, string, error) {
+	if f.accept {
+		return true, "", nil
+	}
+	return false, "denied", nil
+}
+
+func TestAdmitUpdate(t *testing.T) {
+	tests := []struct {
+		name             string
+		oldInitializers  *metav1.Initializers
+		newInitializers  *metav1.Initializers
+		verifyUpdatedObj func(runtime.Object) (pass bool, reason string)
+		err              string
+	}{
+		{
+			name:            "updates on initialized resources are allowed",
+			oldInitializers: nil,
+			newInitializers: nil,
+			err:             "",
+		},
+		{
+			name:            "updates on initialized resources are allowed",
+			oldInitializers: &metav1.Initializers{Pending: []metav1.Initializer{{Name: "init.k8s.io"}}},
+			newInitializers: &metav1.Initializers{},
+			verifyUpdatedObj: func(obj runtime.Object) (bool, string) {
+				accessor, err := meta.Accessor(obj)
+				if err != nil {
+					return false, "cannot get accessor"
+				}
+				if accessor.GetInitializers() != nil {
+					return false, "expect nil initializers"
+				}
+				return true, ""
+			},
+			err: "",
+		},
+		{
+			name:            "initializers may not be set once initialized",
+			oldInitializers: nil,
+			newInitializers: &metav1.Initializers{Pending: []metav1.Initializer{{Name: "init.k8s.io"}}},
+			err:             "field is immutable once initialization has completed",
+		},
+	}
+
+	plugin := initializer{
+		config:     nil,
+		authorizer: &fakeAuthorizer{true},
+	}
+	for _, tc := range tests {
+		oldObj := &v1.Pod{}
+		oldObj.Initializers = tc.oldInitializers
+		newObj := &v1.Pod{}
+		newObj.Initializers = tc.newInitializers
+		a := admission.NewAttributesRecord(newObj, oldObj, schema.GroupVersionKind{}, "", "foo", schema.GroupVersionResource{}, "", admission.Update, nil)
+		err := plugin.Admit(a)
+		switch {
+		case tc.err == "" && err != nil:
+			t.Errorf("%q: unexpected error: %v", tc.name, err)
+		case tc.err != "" && err == nil:
+			t.Errorf("%q: unexpected no error, expected %s", tc.name, tc.err)
+		case tc.err != "" && err != nil && !strings.Contains(err.Error(), tc.err):
+			t.Errorf("%q: expected %s, got %v", tc.name, tc.err, err)
+		}
+	}
+
+}