rebase: add controller runtime dependency

this commits add the controller runtime
and its dependency to the vendor.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/sigs.k8s.io/controller-runtime/pkg/client/interfaces.go

@@ -0,0 +1,135 @@
+/*
+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 client
+
+import (
+	"context"
+
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
+
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
+)
+
+// ObjectKey identifies a Kubernetes Object.
+type ObjectKey = types.NamespacedName
+
+// ObjectKeyFromObject returns the ObjectKey given a runtime.Object
+func ObjectKeyFromObject(obj runtime.Object) (ObjectKey, error) {
+	accessor, err := meta.Accessor(obj)
+	if err != nil {
+		return ObjectKey{}, err
+	}
+	return ObjectKey{Namespace: accessor.GetNamespace(), Name: accessor.GetName()}, nil
+}
+
+// Patch is a patch that can be applied to a Kubernetes object.
+type Patch interface {
+	// Type is the PatchType of the patch.
+	Type() types.PatchType
+	// Data is the raw data representing the patch.
+	Data(obj runtime.Object) ([]byte, error)
+}
+
+// TODO(directxman12): is there a sane way to deal with get/delete options?
+
+// Reader knows how to read and list Kubernetes objects.
+type Reader interface {
+	// Get retrieves an obj for the given object key from the Kubernetes Cluster.
+	// obj must be a struct pointer so that obj can be updated with the response
+	// returned by the Server.
+	Get(ctx context.Context, key ObjectKey, obj runtime.Object) error
+
+	// List retrieves list of objects for a given namespace and list options. On a
+	// successful call, Items field in the list will be populated with the
+	// result returned from the server.
+	List(ctx context.Context, list runtime.Object, opts ...ListOption) error
+}
+
+// Writer knows how to create, delete, and update Kubernetes objects.
+type Writer interface {
+	// Create saves the object obj in the Kubernetes cluster.
+	Create(ctx context.Context, obj runtime.Object, opts ...CreateOption) error
+
+	// Delete deletes the given obj from Kubernetes cluster.
+	Delete(ctx context.Context, obj runtime.Object, opts ...DeleteOption) error
+
+	// Update updates the given obj in the Kubernetes cluster. obj must be a
+	// struct pointer so that obj can be updated with the content returned by the Server.
+	Update(ctx context.Context, obj runtime.Object, opts ...UpdateOption) error
+
+	// Patch patches the given obj in the Kubernetes cluster. obj must be a
+	// struct pointer so that obj can be updated with the content returned by the Server.
+	Patch(ctx context.Context, obj runtime.Object, patch Patch, opts ...PatchOption) error
+
+	// DeleteAllOf deletes all objects of the given type matching the given options.
+	DeleteAllOf(ctx context.Context, obj runtime.Object, opts ...DeleteAllOfOption) error
+}
+
+// StatusClient knows how to create a client which can update status subresource
+// for kubernetes objects.
+type StatusClient interface {
+	Status() StatusWriter
+}
+
+// StatusWriter knows how to update status subresource of a Kubernetes object.
+type StatusWriter interface {
+	// Update updates the fields corresponding to the status subresource for the
+	// given obj. obj must be a struct pointer so that obj can be updated
+	// with the content returned by the Server.
+	Update(ctx context.Context, obj runtime.Object, opts ...UpdateOption) error
+
+	// Patch patches the given object's subresource. obj must be a struct
+	// pointer so that obj can be updated with the content returned by the
+	// Server.
+	Patch(ctx context.Context, obj runtime.Object, patch Patch, opts ...PatchOption) error
+}
+
+// Client knows how to perform CRUD operations on Kubernetes objects.
+type Client interface {
+	Reader
+	Writer
+	StatusClient
+}
+
+// IndexerFunc knows how to take an object and turn it into a series
+// of non-namespaced keys. Namespaced objects are automatically given
+// namespaced and non-spaced variants, so keys do not need to include namespace.
+type IndexerFunc func(runtime.Object) []string
+
+// FieldIndexer knows how to index over a particular "field" such that it
+// can later be used by a field selector.
+type FieldIndexer interface {
+	// IndexFields adds an index with the given field name on the given object type
+	// by using the given function to extract the value for that field.  If you want
+	// compatibility with the Kubernetes API server, only return one key, and only use
+	// fields that the API server supports.  Otherwise, you can return multiple keys,
+	// and "equality" in the field selector means that at least one key matches the value.
+	// The FieldIndexer will automatically take care of indexing over namespace
+	// and supporting efficient all-namespace queries.
+	IndexField(ctx context.Context, obj runtime.Object, field string, extractValue IndexerFunc) error
+}
+
+// IgnoreNotFound returns nil on NotFound errors.
+// All other values that are not NotFound errors or nil are returned unmodified.
+func IgnoreNotFound(err error) error {
+	if apierrors.IsNotFound(err) {
+		return nil
+	}
+	return err
+}