Skip to content
Navigation Menu
{{ message }}
forked from kubernetes-sigs/controller-runtime
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathclient.go
More file actions
328 lines (287 loc) · 10.4 KB
/
Copy pathclient.go
File metadata and controls
328 lines (287 loc) · 10.4 KB
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
/*
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/apimachinery/pkg/runtime/serializer"
"k8s.io/client-go/kubernetes/scheme"
"k8s.io/client-go/metadata"
"k8s.io/client-go/rest"
"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
"sigs.k8s.io/controller-runtime/pkg/log"
)
// WarningHandlerOptions are options for configuring a
// warning handler for the client which is responsible
// for surfacing API Server warnings.
type WarningHandlerOptions struct {
// SuppressWarnings decides if the warnings from the
// API server are suppressed or surfaced in the client.
SuppressWarnings bool
// AllowDuplicateLogs does not deduplicate the to-be
// logged surfaced warnings messages. See
// log.WarningHandlerOptions for considerations
// regarding deuplication
AllowDuplicateLogs bool
}
// Options are creation options for a Client
type Options struct {
// Scheme, if provided, will be used to map go structs to GroupVersionKinds
Scheme *runtime.Scheme
// Mapper, if provided, will be used to map GroupVersionKinds to Resources
Mapper meta.RESTMapper
// Opts is used to configure the warning handler responsible for
// surfacing and handling warnings messages sent by the API server.
Opts WarningHandlerOptions
}
// New returns a new Client using the provided config and Options.
// The returned client reads *and* writes directly from the server
// (it doesn't use object caches). It understands how to work with
// normal types (both custom resources and aggregated/built-in resources),
// as well as unstructured types.
//
// In the case of normal types, the scheme will be used to look up the
// corresponding group, version, and kind for the given type. In the
// case of unstructured types, the group, version, and kind will be extracted
// from the corresponding fields on the object.
func New(config *rest.Config, options Options) (Client, error) {
return newClient(config, options)
}
func newClient(config *rest.Config, options Options) (*client, error) {
if config == nil {
return nil, fmt.Errorf("must provide non-nil rest.Config to client.New")
}
if !options.Opts.SuppressWarnings {
// surface warnings
logger := log.Log.WithName("KubeAPIWarningLogger")
// Set a WarningHandler, the default WarningHandler
// is log.KubeAPIWarningLogger with deduplication enabled.
// See log.KubeAPIWarningLoggerOptions for considerations
// regarding deduplication.
rest.SetDefaultWarningHandler(
log.NewKubeAPIWarningLogger(
logger,
log.KubeAPIWarningLoggerOptions{
Deduplicate: !options.Opts.AllowDuplicateLogs,
},
),
)
}
// Init a scheme if none provided
if options.Scheme == nil {
options.Scheme = scheme.Scheme
}
// Init a Mapper if none provided
if options.Mapper == nil {
var err error
options.Mapper, err = apiutil.NewDynamicRESTMapper(config)
if err != nil {
return nil, err
}
}
clientcache := &clientCache{
config: config,
scheme: options.Scheme,
mapper: options.Mapper,
codecs: serializer.NewCodecFactory(options.Scheme),
structuredResourceByType: make(map[schema.GroupVersionKind]*resourceMeta),
unstructuredResourceByType: make(map[schema.GroupVersionKind]*resourceMeta),
}
rawMetaClient, err := metadata.NewForConfig(config)
if err != nil {
return nil, fmt.Errorf("unable to construct metadata-only client for use as part of client: %w", err)
}
c := &client{
typedClient: typedClient{
cache: clientcache,
paramCodec: runtime.NewParameterCodec(options.Scheme),
},
unstructuredClient: unstructuredClient{
cache: clientcache,
paramCodec: noConversionParamCodec{},
},
metadataClient: metadataClient{
client: rawMetaClient,
restMapper: options.Mapper,
},
scheme: options.Scheme,
mapper: options.Mapper,
}
return c, nil
}
var _ Client = &client{}
// 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 client struct {
typedClient typedClient
unstructuredClient unstructuredClient
metadataClient metadataClient
scheme *runtime.Scheme
mapper meta.RESTMapper
}
// resetGroupVersionKind is a helper function to restore and preserve GroupVersionKind on an object.
func (c *client) resetGroupVersionKind(obj runtime.Object, gvk schema.GroupVersionKind) {
if gvk != schema.EmptyObjectKind.GroupVersionKind() {
if v, ok := obj.(schema.ObjectKind); ok {
v.SetGroupVersionKind(gvk)
}
}
}
// Scheme returns the scheme this client is using.
func (c *client) Scheme() *runtime.Scheme {
return c.scheme
}
// RESTMapper returns the scheme this client is using.
func (c *client) RESTMapper() meta.RESTMapper {
return c.mapper
}
// Create implements client.Client
func (c *client) Create(ctx context.Context, obj Object, opts ...CreateOption) error {
switch obj.(type) {
case *unstructured.Unstructured:
return c.unstructuredClient.Create(ctx, obj, opts...)
case *metav1.PartialObjectMetadata:
return fmt.Errorf("cannot create using only metadata")
default:
return c.typedClient.Create(ctx, obj, opts...)
}
}
// Update implements client.Client
func (c *client) Update(ctx context.Context, obj Object, opts ...UpdateOption) error {
defer c.resetGroupVersionKind(obj, obj.GetObjectKind().GroupVersionKind())
switch obj.(type) {
case *unstructured.Unstructured:
return c.unstructuredClient.Update(ctx, obj, opts...)
case *metav1.PartialObjectMetadata:
return fmt.Errorf("cannot update using only metadata -- did you mean to patch?")
default:
return c.typedClient.Update(ctx, obj, opts...)
}
}
// Delete implements client.Client
func (c *client) Delete(ctx context.Context, obj Object, opts ...DeleteOption) error {
switch obj.(type) {
case *unstructured.Unstructured:
return c.unstructuredClient.Delete(ctx, obj, opts...)
case *metav1.PartialObjectMetadata:
return c.metadataClient.Delete(ctx, obj, opts...)
default:
return c.typedClient.Delete(ctx, obj, opts...)
}
}
// DeleteAllOf implements client.Client
func (c *client) DeleteAllOf(ctx context.Context, obj Object, opts ...DeleteAllOfOption) error {
switch obj.(type) {
case *unstructured.Unstructured:
return c.unstructuredClient.DeleteAllOf(ctx, obj, opts...)
case *metav1.PartialObjectMetadata:
return c.metadataClient.DeleteAllOf(ctx, obj, opts...)
default:
return c.typedClient.DeleteAllOf(ctx, obj, opts...)
}
}
// Patch implements client.Client
func (c *client) Patch(ctx context.Context, obj Object, patch Patch, opts ...PatchOption) error {
defer c.resetGroupVersionKind(obj, obj.GetObjectKind().GroupVersionKind())
switch obj.(type) {
case *unstructured.Unstructured:
return c.unstructuredClient.Patch(ctx, obj, patch, opts...)
case *metav1.PartialObjectMetadata:
return c.metadataClient.Patch(ctx, obj, patch, opts...)
default:
return c.typedClient.Patch(ctx, obj, patch, opts...)
}
}
// Get implements client.Client
func (c *client) Get(ctx context.Context, key ObjectKey, obj Object) error {
switch obj.(type) {
case *unstructured.Unstructured:
return c.unstructuredClient.Get(ctx, key, obj)
case *metav1.PartialObjectMetadata:
// Metadata only object should always preserve the GVK coming in from the caller.
defer c.resetGroupVersionKind(obj, obj.GetObjectKind().GroupVersionKind())
return c.metadataClient.Get(ctx, key, obj)
default:
return c.typedClient.Get(ctx, key, obj)
}
}
// List implements client.Client
func (c *client) List(ctx context.Context, obj ObjectList, opts ...ListOption) error {
switch x := obj.(type) {
case *unstructured.UnstructuredList:
return c.unstructuredClient.List(ctx, obj, opts...)
case *metav1.PartialObjectMetadataList:
// Metadata only object should always preserve the GVK.
gvk := obj.GetObjectKind().GroupVersionKind()
defer c.resetGroupVersionKind(obj, gvk)
// Call the list client.
if err := c.metadataClient.List(ctx, obj, opts...); err != nil {
return err
}
// Restore the GVK for each item in the list.
itemGVK := schema.GroupVersionKind{
Group: gvk.Group,
Version: gvk.Version,
// TODO: this is producing unsafe guesses that don't actually work,
// but it matches ~99% of the cases out there.
Kind: strings.TrimSuffix(gvk.Kind, "List"),
}
for i := range x.Items {
item := &x.Items[i]
item.SetGroupVersionKind(itemGVK)
}
return nil
default:
return c.typedClient.List(ctx, obj, opts...)
}
}
// Status implements client.StatusClient
func (c *client) Status() StatusWriter {
return &statusWriter{client: c}
}
// statusWriter is client.StatusWriter that writes status subresource
type statusWriter struct {
client *client
}
// ensure statusWriter implements client.StatusWriter
var _ StatusWriter = &statusWriter{}
// Update implements client.StatusWriter
func (sw *statusWriter) Update(ctx context.Context, obj Object, opts ...UpdateOption) error {
defer sw.client.resetGroupVersionKind(obj, obj.GetObjectKind().GroupVersionKind())
switch obj.(type) {
case *unstructured.Unstructured:
return sw.client.unstructuredClient.UpdateStatus(ctx, obj, opts...)
case *metav1.PartialObjectMetadata:
return fmt.Errorf("cannot update status using only metadata -- did you mean to patch?")
default:
return sw.client.typedClient.UpdateStatus(ctx, obj, opts...)
}
}
// Patch implements client.Client
func (sw *statusWriter) Patch(ctx context.Context, obj Object, patch Patch, opts ...PatchOption) error {
defer sw.client.resetGroupVersionKind(obj, obj.GetObjectKind().GroupVersionKind())
switch obj.(type) {
case *unstructured.Unstructured:
return sw.client.unstructuredClient.PatchStatus(ctx, obj, patch, opts...)
case *metav1.PartialObjectMetadata:
return sw.client.metadataClient.PatchStatus(ctx, obj, patch, opts...)
default:
return sw.client.typedClient.PatchStatus(ctx, obj, patch, opts...)
}
}
You can’t perform that action at this time.