aboutsummaryrefslogtreecommitdiffstats
path: root/src/k8splugin/internal/app/client.go
blob: f70dc0a5f8f2b1dfc57fef852abcc115120e03d5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
/*
Copyright 2018 Intel Corporation.
Copyright © 2021 Samsung Electronics
Copyright © 2021 Orange
Copyright © 2021 Nokia Bell Labs.

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 app

import (
	"context"
	"io/ioutil"

	appsv1 "k8s.io/api/apps/v1"

	//appsv1beta1 "k8s.io/api/apps/v1beta1"
	//appsv1beta2 "k8s.io/api/apps/v1beta2"
	batchv1 "k8s.io/api/batch/v1"
	corev1 "k8s.io/api/core/v1"

	//extensionsv1beta1 "k8s.io/api/extensions/v1beta1"
	//apiextv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
	//apiextv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
	"os"
	"strings"
	"time"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	logger "log"

	"github.com/onap/multicloud-k8s/src/k8splugin/internal/config"
	"github.com/onap/multicloud-k8s/src/k8splugin/internal/connection"
	"github.com/onap/multicloud-k8s/src/k8splugin/internal/helm"
	log "github.com/onap/multicloud-k8s/src/k8splugin/internal/logutils"
	"github.com/onap/multicloud-k8s/src/k8splugin/internal/plugin"

	pkgerrors "github.com/pkg/errors"
	"k8s.io/apimachinery/pkg/api/meta"
	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/client-go/discovery/cached/disk"
	"k8s.io/client-go/dynamic"
	"k8s.io/client-go/kubernetes"
	"k8s.io/client-go/rest"
	"k8s.io/client-go/restmapper"
	"k8s.io/client-go/tools/clientcmd"
)

// KubernetesClient encapsulates the different clients' interfaces
// we need when interacting with a Kubernetes cluster
type KubernetesClient struct {
	rawConfig      clientcmd.ClientConfig
	restConfig     *rest.Config
	clientSet      kubernetes.Interface
	dynamicClient  dynamic.Interface
	discoverClient *disk.CachedDiscoveryClient
	restMapper     meta.RESTMapper
	instanceID     string
}

// ResourceStatus holds Resource Runtime Data
type ResourceStatus struct {
	Name   string                    `json:"name"`
	GVK    schema.GroupVersionKind   `json:"GVK"`
	Status unstructured.Unstructured `json:"status"`
}

func (k *KubernetesClient) getObjTypeForHook(kind string) (runtime.Object, error) {
	switch kind {
	case "Job":
		return &batchv1.Job{}, nil
	case "Pod":
		return &corev1.Pod{}, nil
	case "Deployment":
		return &appsv1.Deployment{}, nil
	case "DaemonSet":
		return &appsv1.DaemonSet{}, nil
	case "StatefulSet":
		return &appsv1.StatefulSet{}, nil
	default:
		return nil, pkgerrors.New("kind " + kind + " unknown")
	}
}

func (k *KubernetesClient) getRestApi(apiVersion string) (rest.Interface, error) {
	//based on kubectl api-versions
	switch apiVersion {
	case "admissionregistration.k8s.io/v1":
		return k.clientSet.AdmissionregistrationV1().RESTClient(), nil
	case "admissionregistration.k8s.io/v1beta1":
		return k.clientSet.AdmissionregistrationV1beta1().RESTClient(), nil
	case "apps/v1":
		return k.clientSet.AppsV1().RESTClient(), nil
	case "apps/v1beta1":
		return k.clientSet.AppsV1beta1().RESTClient(), nil
	case "apps/v1beta2":
		return k.clientSet.AppsV1beta2().RESTClient(), nil
	case "authentication.k8s.io/v1":
		return k.clientSet.AuthenticationV1().RESTClient(), nil
	case "authentication.k8s.io/v1beta1":
		return k.clientSet.AuthenticationV1beta1().RESTClient(), nil
	case "authorization.k8s.io/v1":
		return k.clientSet.AuthorizationV1().RESTClient(), nil
	case "authorization.k8s.io/v1beta1":
		return k.clientSet.AuthorizationV1beta1().RESTClient(), nil
	case "autoscaling/v1":
		return k.clientSet.AutoscalingV1().RESTClient(), nil
	case "autoscaling/v2beta1":
		return k.clientSet.AutoscalingV2beta1().RESTClient(), nil
	case "autoscaling/v2beta2":
		return k.clientSet.AutoscalingV2beta2().RESTClient(), nil
	case "batch/v1":
		return k.clientSet.BatchV1().RESTClient(), nil
	case "batch/v1beta1":
		return k.clientSet.BatchV1beta1().RESTClient(), nil
	case "certificates.k8s.io/v1":
		return k.clientSet.CertificatesV1().RESTClient(), nil
	case "certificates.k8s.io/v1beta1":
		return k.clientSet.CertificatesV1beta1().RESTClient(), nil
	case "coordination.k8s.io/v1":
		return k.clientSet.CoordinationV1().RESTClient(), nil
	case "coordination.k8s.io/v1beta1":
		return k.clientSet.CoordinationV1beta1().RESTClient(), nil
	case "v1":
		return k.clientSet.CoreV1().RESTClient(), nil
	case "discovery.k8s.io/v1beta1":
		return k.clientSet.DiscoveryV1beta1().RESTClient(), nil
	case "events.k8s.io/v1":
		return k.clientSet.EventsV1().RESTClient(), nil
	case "events.k8s.io/v1beta1":
		return k.clientSet.EventsV1beta1().RESTClient(), nil
	case "extensions/v1beta1":
		return k.clientSet.ExtensionsV1beta1().RESTClient(), nil
	case "flowcontrol.apiserver.k8s.io/v1alpha1":
		return k.clientSet.FlowcontrolV1alpha1().RESTClient(), nil
	case "networking.k8s.io/v1":
		return k.clientSet.NetworkingV1().RESTClient(), nil
	case "networking.k8s.io/v1beta1":
		return k.clientSet.NetworkingV1beta1().RESTClient(), nil
	case "node.k8s.io/v1alpha1":
		return k.clientSet.NodeV1alpha1().RESTClient(), nil
	case "node.k8s.io/v1beta1":
		return k.clientSet.NodeV1beta1().RESTClient(), nil
	case "policy/v1beta1":
		return k.clientSet.PolicyV1beta1().RESTClient(), nil
	case "rbac.authorization.k8s.io/v1":
		return k.clientSet.RbacV1().RESTClient(), nil
	case "rbac.authorization.k8s.io/v1alpha1":
		return k.clientSet.RbacV1alpha1().RESTClient(), nil
	case "rbac.authorization.k8s.io/v1beta1":
		return k.clientSet.RbacV1beta1().RESTClient(), nil
	case "scheduling.k8s.io/v1":
		return k.clientSet.SchedulingV1().RESTClient(), nil
	case "scheduling.k8s.io/v1alpha1":
		return k.clientSet.SchedulingV1alpha1().RESTClient(), nil
	case "scheduling.k8s.io/v1beta1":
		return k.clientSet.SchedulingV1beta1().RESTClient(), nil
	case "storage.k8s.io/v1":
		return k.clientSet.StorageV1().RESTClient(), nil
	case "storage.k8s.io/v1alpha1":
		return k.clientSet.StorageV1alpha1().RESTClient(), nil
	case "storage.k8s.io/v1beta1":
		return k.clientSet.StorageV1beta1().RESTClient(), nil
	default:
		return nil, pkgerrors.New("Api version " + apiVersion + " unknown")
	}
}

func (k *KubernetesClient) WatchHookUntilReady(timeout time.Duration, ns string, res helm.KubernetesResource) error {
	//for now, only generic plugin has dedicated WatchUntilReady implemented. Later, we can implement this function
	//for each plugin separately.
	pluginImpl, err := plugin.GetPluginByKind("generic")
	if err != nil {
		return pkgerrors.Wrap(err, "Error loading plugin")
	}

	mapper := k.GetMapper()
	apiVersion, kind := res.GVK.ToAPIVersionAndKind()
	if apiVersion == "" {
		//apiVersion is empty -> we can suppose that the rss is ready
		logger.Printf("apiVersion is empty, consider that the rss is ready")
		return nil
	}
	objType, err := k.getObjTypeForHook(kind)
	if err != nil {
		//have error from getObjTypeForHook -> this kind is not considered in hook -> consider ready
		return nil
	}

	logger.Printf("apiVersion: %s, Kind: %s", apiVersion, kind)
	restClient, err := k.getRestApi(apiVersion)
	if err != nil {
		return pkgerrors.Wrap(err, "Get rest client")
	}

	return pluginImpl.WatchUntilReady(timeout, ns, res, mapper, restClient, objType, k.clientSet)
}

// getPodsByLabel yields status of all pods under given instance ID
func (k *KubernetesClient) getPodsByLabel(namespace string) ([]ResourceStatus, error) {
	client := k.GetStandardClient().CoreV1().Pods(namespace)
	listOpts := metav1.ListOptions{
		LabelSelector: config.GetConfiguration().KubernetesLabelName + "=" + k.instanceID,
	}
	podList, err := client.List(context.TODO(), listOpts)
	if err != nil {
		return nil, pkgerrors.Wrap(err, "Retrieving PodList from cluster")
	}
	resp := make([]ResourceStatus, 0, len(podList.Items))
	cumulatedErrorMsg := make([]string, 0)
	for _, pod := range podList.Items {
		podContent, err := runtime.DefaultUnstructuredConverter.ToUnstructured(&pod)
		if err != nil {
			cumulatedErrorMsg = append(cumulatedErrorMsg, err.Error())
			continue
		}
		var unstrPod unstructured.Unstructured
		unstrPod.SetUnstructuredContent(podContent)
		podStatus := ResourceStatus{
			Name:   unstrPod.GetName(),
			GVK:    schema.FromAPIVersionAndKind("v1", "Pod"),
			Status: unstrPod,
		}
		resp = append(resp, podStatus)
	}
	if len(cumulatedErrorMsg) != 0 {
		return resp, pkgerrors.New("Converting podContent to unstruct error:\n" +
			strings.Join(cumulatedErrorMsg, "\n"))
	}
	return resp, nil
}

func (k *KubernetesClient) queryResources(apiVersion, kind, labelSelector, namespace string) ([]ResourceStatus, error) {
	dynClient := k.GetDynamicClient()
	mapper := k.GetMapper()
	gvk := schema.FromAPIVersionAndKind(apiVersion, kind)
	mapping, err := mapper.RESTMapping(gvk.GroupKind(), gvk.Version)
	if err != nil {
		return nil, pkgerrors.Wrap(err, "Preparing mapper based on GVK")
	}

	gvr := mapping.Resource
	opts := metav1.ListOptions{
		LabelSelector: labelSelector,
	}
	var unstrList *unstructured.UnstructuredList
	switch mapping.Scope.Name() {
	case meta.RESTScopeNameNamespace:
		unstrList, err = dynClient.Resource(gvr).Namespace(namespace).List(context.TODO(), opts)
	case meta.RESTScopeNameRoot:
		unstrList, err = dynClient.Resource(gvr).List(context.TODO(), opts)
	default:
		return nil, pkgerrors.New("Got an unknown RESTScopeName for mapping: " + gvk.String())
	}
	if err != nil {
		return nil, pkgerrors.Wrap(err, "Querying for resources")
	}

	resp := make([]ResourceStatus, 0)
	for _, unstr := range unstrList.Items {
		if unstr.GetName() != "" {
			resp = append(resp, ResourceStatus{unstr.GetName(), gvk, unstr})
		}
	}
	return resp, nil
}

// GetResourcesStatus yields status of given generic resource
func (k *KubernetesClient) GetResourceStatus(res helm.KubernetesResource, namespace string) (ResourceStatus, error) {
	dynClient := k.GetDynamicClient()
	mapper := k.GetMapper()
	mapping, err := mapper.RESTMapping(schema.GroupKind{
		Group: res.GVK.Group,
		Kind:  res.GVK.Kind,
	}, res.GVK.Version)
	if err != nil {
		return ResourceStatus{},
			pkgerrors.Wrap(err, "Preparing mapper based on GVK")
	}

	gvr := mapping.Resource
	opts := metav1.GetOptions{}
	var unstruct *unstructured.Unstructured
	switch mapping.Scope.Name() {
	case meta.RESTScopeNameNamespace:
		unstruct, err = dynClient.Resource(gvr).Namespace(namespace).Get(context.TODO(), res.Name, opts)
	case meta.RESTScopeNameRoot:
		unstruct, err = dynClient.Resource(gvr).Get(context.TODO(), res.Name, opts)
	default:
		return ResourceStatus{}, pkgerrors.New("Got an unknown RESTSCopeName for mapping: " + res.GVK.String())
	}

	if err != nil {
		return ResourceStatus{}, pkgerrors.Wrap(err, "Getting object status")
	}

	return ResourceStatus{unstruct.GetName(), res.GVK, *unstruct}, nil
}

// getKubeConfig uses the connectivity client to get the kubeconfig based on the name
// of the cloudregion. This is written out to a file.
func (k *KubernetesClient) getKubeConfig(cloudregion string) (string, error) {

	conn := connection.NewConnectionClient()
	kubeConfigPath, err := conn.Download(cloudregion)
	if err != nil {
		return "", pkgerrors.Wrap(err, "Downloading kubeconfig")
	}

	return kubeConfigPath, nil
}

// Init loads the Kubernetes configuation values stored into the local configuration file
func (k *KubernetesClient) Init(cloudregion string, iid string) error {
	if cloudregion == "" {
		return pkgerrors.New("Cloudregion is empty")
	}

	if iid == "" {
		return pkgerrors.New("Instance ID is empty")
	}

	k.instanceID = iid

	configPath, err := k.getKubeConfig(cloudregion)
	if err != nil {
		return pkgerrors.Wrap(err, "Get kubeconfig file")
	}

	//Remove kubeconfigfile after the clients are created
	defer os.Remove(configPath)

	config, err := clientcmd.BuildConfigFromFlags("", configPath)
	if err != nil {
		return pkgerrors.Wrap(err, "setConfig: Build config from flags raised an error")
	}

	k.clientSet, err = kubernetes.NewForConfig(config)
	if err != nil {
		return err
	}

	k.dynamicClient, err = dynamic.NewForConfig(config)
	if err != nil {
		return pkgerrors.Wrap(err, "Creating dynamic client")
	}

	k.discoverClient, err = disk.NewCachedDiscoveryClientForConfig(config, os.TempDir(), "", 10*time.Minute)
	if err != nil {
		return pkgerrors.Wrap(err, "Creating discovery client")
	}

	k.restMapper = restmapper.NewDeferredDiscoveryRESTMapper(k.discoverClient)
	k.restConfig = config

	//Spawn ClientConfig
	kubeFile, err := os.Open(configPath)
	if err != nil {
		return pkgerrors.Wrap(err, "Opening kubeConfig")
	}
	kubeData, err := ioutil.ReadAll(kubeFile)
	if err != nil {
		return pkgerrors.Wrap(err, "Reading kubeConfig")
	}
	k.rawConfig, err = clientcmd.NewClientConfigFromBytes(kubeData)
	if err != nil {
		return pkgerrors.Wrap(err, "Creating rawConfig")
	}

	return nil
}

func (k *KubernetesClient) ensureNamespace(namespace string) error {

	pluginImpl, err := plugin.GetPluginByKind("Namespace")
	if err != nil {
		return pkgerrors.Wrap(err, "Loading Namespace Plugin")
	}

	ns, err := pluginImpl.Get(helm.KubernetesResource{
		Name: namespace,
		GVK: schema.GroupVersionKind{
			Group:   "",
			Version: "v1",
			Kind:    "Namespace",
		},
	}, namespace, k)

	// Check for errors getting the namespace while ignoring errors where the namespace does not exist
	// Error message when namespace does not exist: "namespaces "namespace-name" not found"
	if err != nil && strings.Contains(err.Error(), "not found") == false {
		log.Error("Error checking for namespace", log.Fields{
			"error":     err,
			"namespace": namespace,
		})
		return pkgerrors.Wrap(err, "Error checking for namespace: "+namespace)
	}

	if ns == "" {
		log.Info("Creating Namespace", log.Fields{
			"namespace": namespace,
		})

		_, err = pluginImpl.Create("", namespace, k)
		if err != nil {
			log.Error("Error Creating Namespace", log.Fields{
				"error":     err,
				"namespace": namespace,
			})
			return pkgerrors.Wrap(err, "Error creating "+namespace+" namespace")
		}
	}
	return nil
}

func (k *KubernetesClient) CreateKind(resTempl helm.KubernetesResourceTemplate, namespace string) (helm.KubernetesResource, error) {

	if _, err := os.Stat(resTempl.FilePath); os.IsNotExist(err) {
		return helm.KubernetesResource{}, pkgerrors.New("File " + resTempl.FilePath + "does not exists")
	}

	log.Info("Processing Kubernetes Resource", log.Fields{
		"filepath": resTempl.FilePath,
	})

	pluginImpl, err := plugin.GetPluginByKind(resTempl.GVK.Kind)
	if err != nil {
		return helm.KubernetesResource{}, pkgerrors.Wrap(err, "Error loading plugin")
	}

	createdResourceName, err := pluginImpl.Create(resTempl.FilePath, namespace, k)
	if err != nil {
		log.Error("Error Creating Resource", log.Fields{
			"error":    err,
			"gvk":      resTempl.GVK,
			"filepath": resTempl.FilePath,
		})
		return helm.KubernetesResource{}, pkgerrors.Wrap(err, "Error in plugin "+resTempl.GVK.Kind+" plugin")
	}

	log.Info("Created Kubernetes Resource", log.Fields{
		"resource": createdResourceName,
		"gvk":      resTempl.GVK,
	})

	return helm.KubernetesResource{
		GVK:  resTempl.GVK,
		Name: createdResourceName,
	}, nil
}

func (k *KubernetesClient) updateKind(resTempl helm.KubernetesResourceTemplate,
	namespace string) (helm.KubernetesResource, error) {

	if _, err := os.Stat(resTempl.FilePath); os.IsNotExist(err) {
		return helm.KubernetesResource{}, pkgerrors.New("File " + resTempl.FilePath + " does not exists")
	}

	log.Info("Processing Kubernetes Resource", log.Fields{
		"filepath": resTempl.FilePath,
	})

	pluginImpl, err := plugin.GetPluginByKind(resTempl.GVK.Kind)
	if err != nil {
		return helm.KubernetesResource{}, pkgerrors.Wrap(err, "Error loading plugin")
	}

	updatedResourceName, err := pluginImpl.Update(resTempl.FilePath, namespace, k)
	if err != nil {
		log.Error("Error Updating Resource", log.Fields{
			"error":    err,
			"gvk":      resTempl.GVK,
			"filepath": resTempl.FilePath,
		})
		return helm.KubernetesResource{}, pkgerrors.Wrap(err, "Error in plugin "+resTempl.GVK.Kind+" plugin")
	}

	log.Info("Updated Kubernetes Resource", log.Fields{
		"resource": updatedResourceName,
		"gvk":      resTempl.GVK,
	})

	return helm.KubernetesResource{
		GVK:  resTempl.GVK,
		Name: updatedResourceName,
	}, nil
}

func (k *KubernetesClient) createResources(sortedTemplates []helm.KubernetesResourceTemplate,
	namespace string) ([]helm.KubernetesResource, error) {

	var createdResources []helm.KubernetesResource

	err := k.ensureNamespace(namespace)
	if err != nil {
		return createdResources, pkgerrors.Wrap(err, "Creating Namespace")
	}

	for _, resTempl := range sortedTemplates {
		resCreated, err := k.CreateKind(resTempl, namespace)
		if err != nil {
			return createdResources, pkgerrors.Wrapf(err, "Error creating kind: %+v", resTempl.GVK)
		}
		createdResources = append(createdResources, resCreated)
	}

	return createdResources, nil
}

func (k *KubernetesClient) updateResources(sortedTemplates []helm.KubernetesResourceTemplate,
	namespace string) ([]helm.KubernetesResource, error) {

	err := k.ensureNamespace(namespace)
	if err != nil {
		return nil, pkgerrors.Wrap(err, "Creating Namespace")
	}

	var updatedResources []helm.KubernetesResource
	for _, resTempl := range sortedTemplates {
		resUpdated, err := k.updateKind(resTempl, namespace)
		if err != nil {
			return nil, pkgerrors.Wrapf(err, "Error updating kind: %+v", resTempl.GVK)
		}
		updatedResources = append(updatedResources, resUpdated)
	}

	return updatedResources, nil
}

func (k *KubernetesClient) DeleteKind(resource helm.KubernetesResource, namespace string) error {
	log.Warn("Deleting Resource", log.Fields{
		"gvk":      resource.GVK,
		"resource": resource.Name,
	})

	pluginImpl, err := plugin.GetPluginByKind(resource.GVK.Kind)
	if err != nil {
		return pkgerrors.Wrap(err, "Error loading plugin")
	}

	err = pluginImpl.Delete(resource, namespace, k)

	if err != nil {
		if strings.Contains(err.Error(), "not found") == false {
			return pkgerrors.Wrap(err, "Error deleting "+resource.Name)
		} else {
			log.Warn("Resource already does not exist", log.Fields{
				"gvk":      resource.GVK,
				"resource": resource.Name,
			})
		}
	}

	return nil
}

func (k *KubernetesClient) deleteResources(resources []helm.KubernetesResource, namespace string) error {
	//TODO: Investigate if deletion should be in a particular order
	for _, res := range resources {
		err := k.DeleteKind(res, namespace)
		if err != nil {
			return pkgerrors.Wrap(err, "Deleting resources")
		}
	}

	return nil
}

//GetMapper returns the RESTMapper that was created for this client
func (k *KubernetesClient) GetMapper() meta.RESTMapper {
	return k.restMapper
}

//GetDynamicClient returns the dynamic client that is needed for
//unstructured REST calls to the apiserver
func (k *KubernetesClient) GetDynamicClient() dynamic.Interface {
	return k.dynamicClient
}

// GetStandardClient returns the standard client that can be used to handle
// standard kubernetes kinds
func (k *KubernetesClient) GetStandardClient() kubernetes.Interface {
	return k.clientSet
}

//GetInstanceID returns the instanceID that is injected into all the
//resources created by the plugin
func (k *KubernetesClient) GetInstanceID() string {
	return k.instanceID
}