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Zack Williamse940c7a2019-08-21 14:25:39 -07001/*
2Copyright 2017 The Kubernetes Authors.
3
4Licensed under the Apache License, Version 2.0 (the "License");
5you may not use this file except in compliance with the License.
6You may obtain a copy of the License at
7
8 http://www.apache.org/licenses/LICENSE-2.0
9
10Unless required by applicable law or agreed to in writing, software
11distributed under the License is distributed on an "AS IS" BASIS,
12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13See the License for the specific language governing permissions and
14limitations under the License.
15*/
16
17package v1beta1
18
19import (
20 metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
21)
22
23// Rule is a tuple of APIGroups, APIVersion, and Resources.It is recommended
24// to make sure that all the tuple expansions are valid.
25type Rule struct {
26 // APIGroups is the API groups the resources belong to. '*' is all groups.
27 // If '*' is present, the length of the slice must be one.
28 // Required.
29 APIGroups []string `json:"apiGroups,omitempty" protobuf:"bytes,1,rep,name=apiGroups"`
30
31 // APIVersions is the API versions the resources belong to. '*' is all versions.
32 // If '*' is present, the length of the slice must be one.
33 // Required.
34 APIVersions []string `json:"apiVersions,omitempty" protobuf:"bytes,2,rep,name=apiVersions"`
35
36 // Resources is a list of resources this rule applies to.
37 //
38 // For example:
39 // 'pods' means pods.
40 // 'pods/log' means the log subresource of pods.
41 // '*' means all resources, but not subresources.
42 // 'pods/*' means all subresources of pods.
43 // '*/scale' means all scale subresources.
44 // '*/*' means all resources and their subresources.
45 //
46 // If wildcard is present, the validation rule will ensure resources do not
47 // overlap with each other.
48 //
49 // Depending on the enclosing object, subresources might not be allowed.
50 // Required.
51 Resources []string `json:"resources,omitempty" protobuf:"bytes,3,rep,name=resources"`
52
53 // scope specifies the scope of this rule.
54 // Valid values are "Cluster", "Namespaced", and "*"
55 // "Cluster" means that only cluster-scoped resources will match this rule.
56 // Namespace API objects are cluster-scoped.
57 // "Namespaced" means that only namespaced resources will match this rule.
58 // "*" means that there are no scope restrictions.
59 // Subresources match the scope of their parent resource.
60 // Default is "*".
61 //
62 // +optional
63 Scope *ScopeType `json:"scope,omitempty" protobuf:"bytes,4,rep,name=scope"`
64}
65
66type ScopeType string
67
68const (
69 // ClusterScope means that scope is limited to cluster-scoped objects.
70 // Namespace objects are cluster-scoped.
71 ClusterScope ScopeType = "Cluster"
72 // NamespacedScope means that scope is limited to namespaced objects.
73 NamespacedScope ScopeType = "Namespaced"
74 // AllScopes means that all scopes are included.
75 AllScopes ScopeType = "*"
76)
77
78type FailurePolicyType string
79
80const (
81 // Ignore means that an error calling the webhook is ignored.
82 Ignore FailurePolicyType = "Ignore"
83 // Fail means that an error calling the webhook causes the admission to fail.
84 Fail FailurePolicyType = "Fail"
85)
86
87// MatchPolicyType specifies the type of match policy
88type MatchPolicyType string
89
90const (
91 // Exact means requests should only be sent to the webhook if they exactly match a given rule
92 Exact MatchPolicyType = "Exact"
93 // Equivalent means requests should be sent to the webhook if they modify a resource listed in rules via another API group or version.
94 Equivalent MatchPolicyType = "Equivalent"
95)
96
97type SideEffectClass string
98
99const (
100 // SideEffectClassUnknown means that no information is known about the side effects of calling the webhook.
101 // If a request with the dry-run attribute would trigger a call to this webhook, the request will instead fail.
102 SideEffectClassUnknown SideEffectClass = "Unknown"
103 // SideEffectClassNone means that calling the webhook will have no side effects.
104 SideEffectClassNone SideEffectClass = "None"
105 // SideEffectClassSome means that calling the webhook will possibly have side effects.
106 // If a request with the dry-run attribute would trigger a call to this webhook, the request will instead fail.
107 SideEffectClassSome SideEffectClass = "Some"
108 // SideEffectClassNoneOnDryRun means that calling the webhook will possibly have side effects, but if the
109 // request being reviewed has the dry-run attribute, the side effects will be suppressed.
110 SideEffectClassNoneOnDryRun SideEffectClass = "NoneOnDryRun"
111)
112
113// +genclient
114// +genclient:nonNamespaced
115// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
116
117// ValidatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and object without changing it.
118type ValidatingWebhookConfiguration struct {
119 metav1.TypeMeta `json:",inline"`
120 // Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata.
121 // +optional
122 metav1.ObjectMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
123 // Webhooks is a list of webhooks and the affected resources and operations.
124 // +optional
125 // +patchMergeKey=name
126 // +patchStrategy=merge
127 Webhooks []ValidatingWebhook `json:"webhooks,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,2,rep,name=Webhooks"`
128}
129
130// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
131
132// ValidatingWebhookConfigurationList is a list of ValidatingWebhookConfiguration.
133type ValidatingWebhookConfigurationList struct {
134 metav1.TypeMeta `json:",inline"`
135 // Standard list metadata.
136 // More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#types-kinds
137 // +optional
138 metav1.ListMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
139 // List of ValidatingWebhookConfiguration.
140 Items []ValidatingWebhookConfiguration `json:"items" protobuf:"bytes,2,rep,name=items"`
141}
142
143// +genclient
144// +genclient:nonNamespaced
145// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
146
147// MutatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and may change the object.
148type MutatingWebhookConfiguration struct {
149 metav1.TypeMeta `json:",inline"`
150 // Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata.
151 // +optional
152 metav1.ObjectMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
153 // Webhooks is a list of webhooks and the affected resources and operations.
154 // +optional
155 // +patchMergeKey=name
156 // +patchStrategy=merge
157 Webhooks []MutatingWebhook `json:"webhooks,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,2,rep,name=Webhooks"`
158}
159
160// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
161
162// MutatingWebhookConfigurationList is a list of MutatingWebhookConfiguration.
163type MutatingWebhookConfigurationList struct {
164 metav1.TypeMeta `json:",inline"`
165 // Standard list metadata.
166 // More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#types-kinds
167 // +optional
168 metav1.ListMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
169 // List of MutatingWebhookConfiguration.
170 Items []MutatingWebhookConfiguration `json:"items" protobuf:"bytes,2,rep,name=items"`
171}
172
173// ValidatingWebhook describes an admission webhook and the resources and operations it applies to.
174type ValidatingWebhook struct {
175 // The name of the admission webhook.
176 // Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where
177 // "imagepolicy" is the name of the webhook, and kubernetes.io is the name
178 // of the organization.
179 // Required.
180 Name string `json:"name" protobuf:"bytes,1,opt,name=name"`
181
182 // ClientConfig defines how to communicate with the hook.
183 // Required
184 ClientConfig WebhookClientConfig `json:"clientConfig" protobuf:"bytes,2,opt,name=clientConfig"`
185
186 // Rules describes what operations on what resources/subresources the webhook cares about.
187 // The webhook cares about an operation if it matches _any_ Rule.
188 // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks
189 // from putting the cluster in a state which cannot be recovered from without completely
190 // disabling the plugin, ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks are never called
191 // on admission requests for ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects.
192 Rules []RuleWithOperations `json:"rules,omitempty" protobuf:"bytes,3,rep,name=rules"`
193
194 // FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
195 // allowed values are Ignore or Fail. Defaults to Ignore.
196 // +optional
197 FailurePolicy *FailurePolicyType `json:"failurePolicy,omitempty" protobuf:"bytes,4,opt,name=failurePolicy,casttype=FailurePolicyType"`
198
199 // matchPolicy defines how the "rules" list is used to match incoming requests.
200 // Allowed values are "Exact" or "Equivalent".
201 //
202 // - Exact: match a request only if it exactly matches a specified rule.
203 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
204 // but "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
205 // a request to apps/v1beta1 or extensions/v1beta1 would not be sent to the webhook.
206 //
207 // - Equivalent: match a request if modifies a resource listed in rules, even via another API group or version.
208 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
209 // and "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
210 // a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the webhook.
211 //
212 // Defaults to "Exact"
213 // +optional
214 MatchPolicy *MatchPolicyType `json:"matchPolicy,omitempty" protobuf:"bytes,9,opt,name=matchPolicy,casttype=MatchPolicyType"`
215
216 // NamespaceSelector decides whether to run the webhook on an object based
217 // on whether the namespace for that object matches the selector. If the
218 // object itself is a namespace, the matching is performed on
219 // object.metadata.labels. If the object is another cluster scoped resource,
220 // it never skips the webhook.
221 //
222 // For example, to run the webhook on any objects whose namespace is not
223 // associated with "runlevel" of "0" or "1"; you will set the selector as
224 // follows:
225 // "namespaceSelector": {
226 // "matchExpressions": [
227 // {
228 // "key": "runlevel",
229 // "operator": "NotIn",
230 // "values": [
231 // "0",
232 // "1"
233 // ]
234 // }
235 // ]
236 // }
237 //
238 // If instead you want to only run the webhook on any objects whose
239 // namespace is associated with the "environment" of "prod" or "staging";
240 // you will set the selector as follows:
241 // "namespaceSelector": {
242 // "matchExpressions": [
243 // {
244 // "key": "environment",
245 // "operator": "In",
246 // "values": [
247 // "prod",
248 // "staging"
249 // ]
250 // }
251 // ]
252 // }
253 //
254 // See
255 // https://kubernetes.io/docs/concepts/overview/working-with-objects/labels
256 // for more examples of label selectors.
257 //
258 // Default to the empty LabelSelector, which matches everything.
259 // +optional
260 NamespaceSelector *metav1.LabelSelector `json:"namespaceSelector,omitempty" protobuf:"bytes,5,opt,name=namespaceSelector"`
261
262 // ObjectSelector decides whether to run the webhook based on if the
263 // object has matching labels. objectSelector is evaluated against both
264 // the oldObject and newObject that would be sent to the webhook, and
265 // is considered to match if either object matches the selector. A null
266 // object (oldObject in the case of create, or newObject in the case of
267 // delete) or an object that cannot have labels (like a
268 // DeploymentRollback or a PodProxyOptions object) is not considered to
269 // match.
270 // Use the object selector only if the webhook is opt-in, because end
271 // users may skip the admission webhook by setting the labels.
272 // Default to the empty LabelSelector, which matches everything.
273 // +optional
274 ObjectSelector *metav1.LabelSelector `json:"objectSelector,omitempty" protobuf:"bytes,10,opt,name=objectSelector"`
275
276 // SideEffects states whether this webhookk has side effects.
277 // Acceptable values are: Unknown, None, Some, NoneOnDryRun
278 // Webhooks with side effects MUST implement a reconciliation system, since a request may be
279 // rejected by a future step in the admission change and the side effects therefore need to be undone.
280 // Requests with the dryRun attribute will be auto-rejected if they match a webhook with
281 // sideEffects == Unknown or Some. Defaults to Unknown.
282 // +optional
283 SideEffects *SideEffectClass `json:"sideEffects,omitempty" protobuf:"bytes,6,opt,name=sideEffects,casttype=SideEffectClass"`
284
285 // TimeoutSeconds specifies the timeout for this webhook. After the timeout passes,
286 // the webhook call will be ignored or the API call will fail based on the
287 // failure policy.
288 // The timeout value must be between 1 and 30 seconds.
289 // Default to 30 seconds.
290 // +optional
291 TimeoutSeconds *int32 `json:"timeoutSeconds,omitempty" protobuf:"varint,7,opt,name=timeoutSeconds"`
292
293 // AdmissionReviewVersions is an ordered list of preferred `AdmissionReview`
294 // versions the Webhook expects. API server will try to use first version in
295 // the list which it supports. If none of the versions specified in this list
296 // supported by API server, validation will fail for this object.
297 // If a persisted webhook configuration specifies allowed versions and does not
298 // include any versions known to the API Server, calls to the webhook will fail
299 // and be subject to the failure policy.
300 // Default to `['v1beta1']`.
301 // +optional
302 AdmissionReviewVersions []string `json:"admissionReviewVersions,omitempty" protobuf:"bytes,8,rep,name=admissionReviewVersions"`
303}
304
305// MutatingWebhook describes an admission webhook and the resources and operations it applies to.
306type MutatingWebhook struct {
307 // The name of the admission webhook.
308 // Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where
309 // "imagepolicy" is the name of the webhook, and kubernetes.io is the name
310 // of the organization.
311 // Required.
312 Name string `json:"name" protobuf:"bytes,1,opt,name=name"`
313
314 // ClientConfig defines how to communicate with the hook.
315 // Required
316 ClientConfig WebhookClientConfig `json:"clientConfig" protobuf:"bytes,2,opt,name=clientConfig"`
317
318 // Rules describes what operations on what resources/subresources the webhook cares about.
319 // The webhook cares about an operation if it matches _any_ Rule.
320 // However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks
321 // from putting the cluster in a state which cannot be recovered from without completely
322 // disabling the plugin, ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks are never called
323 // on admission requests for ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects.
324 Rules []RuleWithOperations `json:"rules,omitempty" protobuf:"bytes,3,rep,name=rules"`
325
326 // FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
327 // allowed values are Ignore or Fail. Defaults to Ignore.
328 // +optional
329 FailurePolicy *FailurePolicyType `json:"failurePolicy,omitempty" protobuf:"bytes,4,opt,name=failurePolicy,casttype=FailurePolicyType"`
330
331 // matchPolicy defines how the "rules" list is used to match incoming requests.
332 // Allowed values are "Exact" or "Equivalent".
333 //
334 // - Exact: match a request only if it exactly matches a specified rule.
335 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
336 // but "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
337 // a request to apps/v1beta1 or extensions/v1beta1 would not be sent to the webhook.
338 //
339 // - Equivalent: match a request if modifies a resource listed in rules, even via another API group or version.
340 // For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1,
341 // and "rules" only included `apiGroups:["apps"], apiVersions:["v1"], resources: ["deployments"]`,
342 // a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the webhook.
343 //
344 // Defaults to "Exact"
345 // +optional
346 MatchPolicy *MatchPolicyType `json:"matchPolicy,omitempty" protobuf:"bytes,9,opt,name=matchPolicy,casttype=MatchPolicyType"`
347
348 // NamespaceSelector decides whether to run the webhook on an object based
349 // on whether the namespace for that object matches the selector. If the
350 // object itself is a namespace, the matching is performed on
351 // object.metadata.labels. If the object is another cluster scoped resource,
352 // it never skips the webhook.
353 //
354 // For example, to run the webhook on any objects whose namespace is not
355 // associated with "runlevel" of "0" or "1"; you will set the selector as
356 // follows:
357 // "namespaceSelector": {
358 // "matchExpressions": [
359 // {
360 // "key": "runlevel",
361 // "operator": "NotIn",
362 // "values": [
363 // "0",
364 // "1"
365 // ]
366 // }
367 // ]
368 // }
369 //
370 // If instead you want to only run the webhook on any objects whose
371 // namespace is associated with the "environment" of "prod" or "staging";
372 // you will set the selector as follows:
373 // "namespaceSelector": {
374 // "matchExpressions": [
375 // {
376 // "key": "environment",
377 // "operator": "In",
378 // "values": [
379 // "prod",
380 // "staging"
381 // ]
382 // }
383 // ]
384 // }
385 //
386 // See
387 // https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
388 // for more examples of label selectors.
389 //
390 // Default to the empty LabelSelector, which matches everything.
391 // +optional
392 NamespaceSelector *metav1.LabelSelector `json:"namespaceSelector,omitempty" protobuf:"bytes,5,opt,name=namespaceSelector"`
393
394 // ObjectSelector decides whether to run the webhook based on if the
395 // object has matching labels. objectSelector is evaluated against both
396 // the oldObject and newObject that would be sent to the webhook, and
397 // is considered to match if either object matches the selector. A null
398 // object (oldObject in the case of create, or newObject in the case of
399 // delete) or an object that cannot have labels (like a
400 // DeploymentRollback or a PodProxyOptions object) is not considered to
401 // match.
402 // Use the object selector only if the webhook is opt-in, because end
403 // users may skip the admission webhook by setting the labels.
404 // Default to the empty LabelSelector, which matches everything.
405 // +optional
406 ObjectSelector *metav1.LabelSelector `json:"objectSelector,omitempty" protobuf:"bytes,11,opt,name=objectSelector"`
407
408 // SideEffects states whether this webhookk has side effects.
409 // Acceptable values are: Unknown, None, Some, NoneOnDryRun
410 // Webhooks with side effects MUST implement a reconciliation system, since a request may be
411 // rejected by a future step in the admission change and the side effects therefore need to be undone.
412 // Requests with the dryRun attribute will be auto-rejected if they match a webhook with
413 // sideEffects == Unknown or Some. Defaults to Unknown.
414 // +optional
415 SideEffects *SideEffectClass `json:"sideEffects,omitempty" protobuf:"bytes,6,opt,name=sideEffects,casttype=SideEffectClass"`
416
417 // TimeoutSeconds specifies the timeout for this webhook. After the timeout passes,
418 // the webhook call will be ignored or the API call will fail based on the
419 // failure policy.
420 // The timeout value must be between 1 and 30 seconds.
421 // Default to 30 seconds.
422 // +optional
423 TimeoutSeconds *int32 `json:"timeoutSeconds,omitempty" protobuf:"varint,7,opt,name=timeoutSeconds"`
424
425 // AdmissionReviewVersions is an ordered list of preferred `AdmissionReview`
426 // versions the Webhook expects. API server will try to use first version in
427 // the list which it supports. If none of the versions specified in this list
428 // supported by API server, validation will fail for this object.
429 // If a persisted webhook configuration specifies allowed versions and does not
430 // include any versions known to the API Server, calls to the webhook will fail
431 // and be subject to the failure policy.
432 // Default to `['v1beta1']`.
433 // +optional
434 AdmissionReviewVersions []string `json:"admissionReviewVersions,omitempty" protobuf:"bytes,8,rep,name=admissionReviewVersions"`
435
436 // reinvocationPolicy indicates whether this webhook should be called multiple times as part of a single admission evaluation.
437 // Allowed values are "Never" and "IfNeeded".
438 //
439 // Never: the webhook will not be called more than once in a single admission evaluation.
440 //
441 // IfNeeded: the webhook will be called at least one additional time as part of the admission evaluation
442 // if the object being admitted is modified by other admission plugins after the initial webhook call.
443 // Webhooks that specify this option *must* be idempotent, able to process objects they previously admitted.
444 // Note:
445 // * the number of additional invocations is not guaranteed to be exactly one.
446 // * if additional invocations result in further modifications to the object, webhooks are not guaranteed to be invoked again.
447 // * webhooks that use this option may be reordered to minimize the number of additional invocations.
448 // * to validate an object after all mutations are guaranteed complete, use a validating admission webhook instead.
449 //
450 // Defaults to "Never".
451 // +optional
452 ReinvocationPolicy *ReinvocationPolicyType `json:"reinvocationPolicy,omitempty" protobuf:"bytes,10,opt,name=reinvocationPolicy,casttype=ReinvocationPolicyType"`
453}
454
455// ReinvocationPolicyType specifies what type of policy the admission hook uses.
456type ReinvocationPolicyType string
457
458const (
459 // NeverReinvocationPolicy indicates that the webhook must not be called more than once in a
460 // single admission evaluation.
461 NeverReinvocationPolicy ReinvocationPolicyType = "Never"
462 // IfNeededReinvocationPolicy indicates that the webhook may be called at least one
463 // additional time as part of the admission evaluation if the object being admitted is
464 // modified by other admission plugins after the initial webhook call.
465 IfNeededReinvocationPolicy ReinvocationPolicyType = "IfNeeded"
466)
467
468// RuleWithOperations is a tuple of Operations and Resources. It is recommended to make
469// sure that all the tuple expansions are valid.
470type RuleWithOperations struct {
471 // Operations is the operations the admission hook cares about - CREATE, UPDATE, or *
472 // for all operations.
473 // If '*' is present, the length of the slice must be one.
474 // Required.
475 Operations []OperationType `json:"operations,omitempty" protobuf:"bytes,1,rep,name=operations,casttype=OperationType"`
476 // Rule is embedded, it describes other criteria of the rule, like
477 // APIGroups, APIVersions, Resources, etc.
478 Rule `json:",inline" protobuf:"bytes,2,opt,name=rule"`
479}
480
481type OperationType string
482
483// The constants should be kept in sync with those defined in k8s.io/kubernetes/pkg/admission/interface.go.
484const (
485 OperationAll OperationType = "*"
486 Create OperationType = "CREATE"
487 Update OperationType = "UPDATE"
488 Delete OperationType = "DELETE"
489 Connect OperationType = "CONNECT"
490)
491
492// WebhookClientConfig contains the information to make a TLS
493// connection with the webhook
494type WebhookClientConfig struct {
495 // `url` gives the location of the webhook, in standard URL form
496 // (`scheme://host:port/path`). Exactly one of `url` or `service`
497 // must be specified.
498 //
499 // The `host` should not refer to a service running in the cluster; use
500 // the `service` field instead. The host might be resolved via external
501 // DNS in some apiservers (e.g., `kube-apiserver` cannot resolve
502 // in-cluster DNS as that would be a layering violation). `host` may
503 // also be an IP address.
504 //
505 // Please note that using `localhost` or `127.0.0.1` as a `host` is
506 // risky unless you take great care to run this webhook on all hosts
507 // which run an apiserver which might need to make calls to this
508 // webhook. Such installs are likely to be non-portable, i.e., not easy
509 // to turn up in a new cluster.
510 //
511 // The scheme must be "https"; the URL must begin with "https://".
512 //
513 // A path is optional, and if present may be any string permissible in
514 // a URL. You may use the path to pass an arbitrary string to the
515 // webhook, for example, a cluster identifier.
516 //
517 // Attempting to use a user or basic auth e.g. "user:password@" is not
518 // allowed. Fragments ("#...") and query parameters ("?...") are not
519 // allowed, either.
520 //
521 // +optional
522 URL *string `json:"url,omitempty" protobuf:"bytes,3,opt,name=url"`
523
524 // `service` is a reference to the service for this webhook. Either
525 // `service` or `url` must be specified.
526 //
527 // If the webhook is running within the cluster, then you should use `service`.
528 //
529 // +optional
530 Service *ServiceReference `json:"service,omitempty" protobuf:"bytes,1,opt,name=service"`
531
532 // `caBundle` is a PEM encoded CA bundle which will be used to validate the webhook's server certificate.
533 // If unspecified, system trust roots on the apiserver are used.
534 // +optional
535 CABundle []byte `json:"caBundle,omitempty" protobuf:"bytes,2,opt,name=caBundle"`
536}
537
538// ServiceReference holds a reference to Service.legacy.k8s.io
539type ServiceReference struct {
540 // `namespace` is the namespace of the service.
541 // Required
542 Namespace string `json:"namespace" protobuf:"bytes,1,opt,name=namespace"`
543 // `name` is the name of the service.
544 // Required
545 Name string `json:"name" protobuf:"bytes,2,opt,name=name"`
546
547 // `path` is an optional URL path which will be sent in any request to
548 // this service.
549 // +optional
550 Path *string `json:"path,omitempty" protobuf:"bytes,3,opt,name=path"`
551
552 // If specified, the port on the service that hosting webhook.
553 // Default to 443 for backward compatibility.
554 // `port` should be a valid port number (1-65535, inclusive).
555 // +optional
556 Port *int32 `json:"port,omitempty" protobuf:"varint,4,opt,name=port"`
557}