Check in the vendor directory

Travis seems to be having issues pulling deps, so we'll have to check in
the vendor directory and prevent the makefile from trying to regenerate
it normally.

vendor/k8s.io/apiserver/pkg/admission/plugin/webhook/validating/dispatcher.go

@@ -0,0 +1,118 @@
+/*
+Copyright 2018 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 validating
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/golang/glog"
+	"k8s.io/apiserver/pkg/admission/plugin/webhook/config"
+	"k8s.io/apiserver/pkg/admission/plugin/webhook/generic"
+
+	admissionv1beta1 "k8s.io/api/admission/v1beta1"
+	"k8s.io/api/admissionregistration/v1beta1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	admissionmetrics "k8s.io/apiserver/pkg/admission/metrics"
+	webhookerrors "k8s.io/apiserver/pkg/admission/plugin/webhook/errors"
+	"k8s.io/apiserver/pkg/admission/plugin/webhook/request"
+)
+
+type validatingDispatcher struct {
+	cm *config.ClientManager
+}
+
+func newValidatingDispatcher(cm *config.ClientManager) generic.Dispatcher {
+	return &validatingDispatcher{cm}
+}
+
+var _ generic.Dispatcher = &validatingDispatcher{}
+
+func (d *validatingDispatcher) Dispatch(ctx context.Context, attr *generic.VersionedAttributes, relevantHooks []*v1beta1.Webhook) error {
+	wg := sync.WaitGroup{}
+	errCh := make(chan error, len(relevantHooks))
+	wg.Add(len(relevantHooks))
+	for i := range relevantHooks {
+		go func(hook *v1beta1.Webhook) {
+			defer wg.Done()
+
+			t := time.Now()
+			err := d.callHook(ctx, hook, attr)
+			admissionmetrics.Metrics.ObserveWebhook(time.Since(t), err != nil, attr.Attributes, "validating", hook.Name)
+			if err == nil {
+				return
+			}
+
+			ignoreClientCallFailures := hook.FailurePolicy != nil && *hook.FailurePolicy == v1beta1.Ignore
+			if callErr, ok := err.(*webhookerrors.ErrCallingWebhook); ok {
+				if ignoreClientCallFailures {
+					glog.Warningf("Failed calling webhook, failing open %v: %v", hook.Name, callErr)
+					utilruntime.HandleError(callErr)
+					return
+				}
+
+				glog.Warningf("Failed calling webhook, failing closed %v: %v", hook.Name, err)
+				errCh <- apierrors.NewInternalError(err)
+				return
+			}
+
+			glog.Warningf("rejected by webhook %q: %#v", hook.Name, err)
+			errCh <- err
+		}(relevantHooks[i])
+	}
+	wg.Wait()
+	close(errCh)
+
+	var errs []error
+	for e := range errCh {
+		errs = append(errs, e)
+	}
+	if len(errs) == 0 {
+		return nil
+	}
+	if len(errs) > 1 {
+		for i := 1; i < len(errs); i++ {
+			// TODO: merge status errors; until then, just return the first one.
+			utilruntime.HandleError(errs[i])
+		}
+	}
+	return errs[0]
+}
+
+func (d *validatingDispatcher) callHook(ctx context.Context, h *v1beta1.Webhook, attr *generic.VersionedAttributes) error {
+	// Make the webhook request
+	request := request.CreateAdmissionReview(attr)
+	client, err := d.cm.HookClient(h)
+	if err != nil {
+		return &webhookerrors.ErrCallingWebhook{WebhookName: h.Name, Reason: err}
+	}
+	response := &admissionv1beta1.AdmissionReview{}
+	if err := client.Post().Context(ctx).Body(&request).Do().Into(response); err != nil {
+		return &webhookerrors.ErrCallingWebhook{WebhookName: h.Name, Reason: err}
+	}
+
+	if response.Response == nil {
+		return &webhookerrors.ErrCallingWebhook{WebhookName: h.Name, Reason: fmt.Errorf("Webhook response was absent")}
+	}
+	if response.Response.Allowed {
+		return nil
+	}
+	return webhookerrors.ToStatusErr(h.Name, response.Response.Result)
+}

vendor/k8s.io/apiserver/pkg/admission/plugin/webhook/validating/doc.go

@@ -0,0 +1,19 @@
+/*
+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 validating makes calls to validating (i.e., non-mutating) webhooks
+// during the admission process.
+package validating // import "k8s.io/apiserver/pkg/admission/plugin/webhook/validating"

vendor/k8s.io/apiserver/pkg/admission/plugin/webhook/validating/plugin.go

@@ -0,0 +1,64 @@
+/*
+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 validating
+
+import (
+	"io"
+
+	"k8s.io/apiserver/pkg/admission"
+	"k8s.io/apiserver/pkg/admission/configuration"
+	"k8s.io/apiserver/pkg/admission/plugin/webhook/generic"
+)
+
+const (
+	// Name of admission plug-in
+	PluginName = "ValidatingAdmissionWebhook"
+)
+
+// Register registers a plugin
+func Register(plugins *admission.Plugins) {
+	plugins.Register(PluginName, func(configFile io.Reader) (admission.Interface, error) {
+		plugin, err := NewValidatingAdmissionWebhook(configFile)
+		if err != nil {
+			return nil, err
+		}
+
+		return plugin, nil
+	})
+}
+
+// Plugin is an implementation of admission.Interface.
+type Plugin struct {
+	*generic.Webhook
+}
+
+var _ admission.ValidationInterface = &Plugin{}
+
+// NewValidatingAdmissionWebhook returns a generic admission webhook plugin.
+func NewValidatingAdmissionWebhook(configFile io.Reader) (*Plugin, error) {
+	handler := admission.NewHandler(admission.Connect, admission.Create, admission.Delete, admission.Update)
+	webhook, err := generic.NewWebhook(handler, configFile, configuration.NewValidatingWebhookConfigurationManager, newValidatingDispatcher)
+	if err != nil {
+		return nil, err
+	}
+	return &Plugin{webhook}, nil
+}
+
+// Validate makes an admission decision based on the request attributes.
+func (a *Plugin) Validate(attr admission.Attributes) error {
+	return a.Webhook.Dispatch(attr)
+}