add service mesh controller

add service mesh metrics

remove unused circle yaml

fix travis misconfiguration

fix travis misconfiguration

fix travis misconfiguration

vendor/sigs.k8s.io/controller-runtime/pkg/webhook/util.go

@@ -0,0 +1,115 @@
+/*
+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 webhook
+
+import (
+	"context"
+
+	admissionregistration "k8s.io/api/admissionregistration/v1beta1"
+	corev1 "k8s.io/api/core/v1"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+type mutateFn func(current, desired *runtime.Object) error
+
+var serviceFn = func(current, desired *runtime.Object) error {
+	typedC := (*current).(*corev1.Service)
+	typedD := (*desired).(*corev1.Service)
+	typedC.Spec.Selector = typedD.Spec.Selector
+	return nil
+}
+
+var mutatingWebhookConfigFn = func(current, desired *runtime.Object) error {
+	typedC := (*current).(*admissionregistration.MutatingWebhookConfiguration)
+	typedD := (*desired).(*admissionregistration.MutatingWebhookConfiguration)
+	typedC.Webhooks = typedD.Webhooks
+	return nil
+}
+
+var validatingWebhookConfigFn = func(current, desired *runtime.Object) error {
+	typedC := (*current).(*admissionregistration.ValidatingWebhookConfiguration)
+	typedD := (*desired).(*admissionregistration.ValidatingWebhookConfiguration)
+	typedC.Webhooks = typedD.Webhooks
+	return nil
+}
+
+var genericFn = func(current, desired *runtime.Object) error {
+	*current = *desired
+	return nil
+}
+
+// createOrReplaceHelper creates the object if it doesn't exist;
+// otherwise, it will replace it.
+// When replacing, fn  should know how to preserve existing fields in the object GET from the APIServer.
+// TODO: use the helper in #98 when it merges.
+func createOrReplaceHelper(c client.Client, obj runtime.Object, fn mutateFn) error {
+	if obj == nil {
+		return nil
+	}
+	err := c.Create(context.Background(), obj)
+	if apierrors.IsAlreadyExists(err) {
+		// TODO: retry mutiple times with backoff if necessary.
+		existing := obj.DeepCopyObject()
+		objectKey, err := client.ObjectKeyFromObject(obj)
+		if err != nil {
+			return err
+		}
+		err = c.Get(context.Background(), objectKey, existing)
+		if err != nil {
+			return err
+		}
+		err = fn(&existing, &obj)
+		if err != nil {
+			return err
+		}
+		return c.Update(context.Background(), existing)
+	}
+	return err
+}
+
+// createOrReplace creates the object if it doesn't exist;
+// otherwise, it will replace it.
+// When replacing, it knows how to preserve existing fields in the object GET from the APIServer.
+// It currently only support MutatingWebhookConfiguration, ValidatingWebhookConfiguration and Service.
+// For other kinds, it uses genericFn to replace the whole object.
+func createOrReplace(c client.Client, obj runtime.Object) error {
+	if obj == nil {
+		return nil
+	}
+	switch obj.(type) {
+	case *admissionregistration.MutatingWebhookConfiguration:
+		return createOrReplaceHelper(c, obj, mutatingWebhookConfigFn)
+	case *admissionregistration.ValidatingWebhookConfiguration:
+		return createOrReplaceHelper(c, obj, validatingWebhookConfigFn)
+	case *corev1.Service:
+		return createOrReplaceHelper(c, obj, serviceFn)
+	default:
+		return createOrReplaceHelper(c, obj, genericFn)
+	}
+}
+
+func batchCreateOrReplace(c client.Client, objs ...runtime.Object) error {
+	for i := range objs {
+		err := createOrReplace(c, objs[i])
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}