Initial commit

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

@@ -0,0 +1,162 @@
+/*
+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"
+	"fmt"
+	"strings"
+
+	"k8s.io/apimachinery/pkg/api/meta"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/client-go/dynamic"
+)
+
+// client is a client.Client that reads and writes directly from/to an API server.  It lazily initializes
+// new clients at the time they are used, and caches the client.
+type unstructuredClient struct {
+	client     dynamic.Interface
+	restMapper meta.RESTMapper
+}
+
+// Create implements client.Client
+func (uc *unstructuredClient) Create(_ context.Context, obj runtime.Object) error {
+	u, ok := obj.(*unstructured.Unstructured)
+	if !ok {
+		return fmt.Errorf("unstructured client did not understand object: %T", obj)
+	}
+	r, err := uc.getResourceInterface(u.GroupVersionKind(), u.GetNamespace())
+	if err != nil {
+		return err
+	}
+	i, err := r.Create(u, metav1.CreateOptions{})
+	if err != nil {
+		return err
+	}
+	u.Object = i.Object
+	return nil
+}
+
+// Update implements client.Client
+func (uc *unstructuredClient) Update(_ context.Context, obj runtime.Object) error {
+	u, ok := obj.(*unstructured.Unstructured)
+	if !ok {
+		return fmt.Errorf("unstructured client did not understand object: %T", obj)
+	}
+	r, err := uc.getResourceInterface(u.GroupVersionKind(), u.GetNamespace())
+	if err != nil {
+		return err
+	}
+	i, err := r.Update(u, metav1.UpdateOptions{})
+	if err != nil {
+		return err
+	}
+	u.Object = i.Object
+	return nil
+}
+
+// Delete implements client.Client
+func (uc *unstructuredClient) Delete(_ context.Context, obj runtime.Object, opts ...DeleteOptionFunc) error {
+	u, ok := obj.(*unstructured.Unstructured)
+	if !ok {
+		return fmt.Errorf("unstructured client did not understand object: %T", obj)
+	}
+	r, err := uc.getResourceInterface(u.GroupVersionKind(), u.GetNamespace())
+	if err != nil {
+		return err
+	}
+	deleteOpts := DeleteOptions{}
+	err = r.Delete(u.GetName(), deleteOpts.ApplyOptions(opts).AsDeleteOptions())
+	return err
+}
+
+// Get implements client.Client
+func (uc *unstructuredClient) Get(_ context.Context, key ObjectKey, obj runtime.Object) error {
+	u, ok := obj.(*unstructured.Unstructured)
+	if !ok {
+		return fmt.Errorf("unstructured client did not understand object: %T", obj)
+	}
+	r, err := uc.getResourceInterface(u.GroupVersionKind(), key.Namespace)
+	if err != nil {
+		return err
+	}
+	i, err := r.Get(key.Name, metav1.GetOptions{})
+	if err != nil {
+		return err
+	}
+	u.Object = i.Object
+	return nil
+}
+
+// List implements client.Client
+func (uc *unstructuredClient) List(_ context.Context, opts *ListOptions, obj runtime.Object) error {
+	u, ok := obj.(*unstructured.UnstructuredList)
+	if !ok {
+		return fmt.Errorf("unstructured client did not understand object: %T", obj)
+	}
+	gvk := u.GroupVersionKind()
+	if strings.HasSuffix(gvk.Kind, "List") {
+		gvk.Kind = gvk.Kind[:len(gvk.Kind)-4]
+	}
+	namespace := ""
+	if opts != nil {
+		namespace = opts.Namespace
+	}
+	r, err := uc.getResourceInterface(gvk, namespace)
+	if err != nil {
+		return err
+	}
+
+	i, err := r.List(*opts.AsListOptions())
+	if err != nil {
+		return err
+	}
+	u.Items = i.Items
+	u.Object = i.Object
+	return nil
+}
+
+func (uc *unstructuredClient) UpdateStatus(_ context.Context, obj runtime.Object) error {
+	u, ok := obj.(*unstructured.Unstructured)
+	if !ok {
+		return fmt.Errorf("unstructured client did not understand object: %T", obj)
+	}
+	r, err := uc.getResourceInterface(u.GroupVersionKind(), u.GetNamespace())
+	if err != nil {
+		return err
+	}
+	i, err := r.UpdateStatus(u, metav1.UpdateOptions{})
+	if err != nil {
+		return err
+	}
+	u.Object = i.Object
+	return nil
+}
+
+func (uc *unstructuredClient) getResourceInterface(gvk schema.GroupVersionKind, ns string) (dynamic.ResourceInterface, error) {
+	mapping, err := uc.restMapper.RESTMapping(gvk.GroupKind(), gvk.Version)
+	if err != nil {
+		return nil, err
+	}
+	if mapping.Scope.Name() == meta.RESTScopeNameRoot {
+		return uc.client.Resource(mapping.Resource), nil
+	}
+	return uc.client.Resource(mapping.Resource).Namespace(ns), nil
+}