pub struct ValidatingWebhook {
    pub admission_review_versions: Vec<String>,
    pub client_config: WebhookClientConfig,
    pub failure_policy: Option<String>,
    pub match_policy: Option<String>,
    pub name: String,
    pub namespace_selector: Option<LabelSelector>,
    pub object_selector: Option<LabelSelector>,
    pub rules: Option<Vec<RuleWithOperations>>,
    pub side_effects: String,
    pub timeout_seconds: Option<i32>,
}
Expand description

ValidatingWebhook describes an admission webhook and the resources and operations it applies to.

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§admission_review_versions: Vec<String>

AdmissionReviewVersions is an ordered list of preferred AdmissionReview versions the Webhook expects. API server will try to use first version in the list which it supports. If none of the versions specified in this list supported by API server, validation will fail for this object. If a persisted webhook configuration specifies allowed versions and does not include any versions known to the API Server, calls to the webhook will fail and be subject to the failure policy.

§client_config: WebhookClientConfig

ClientConfig defines how to communicate with the hook. Required

§failure_policy: Option<String>

FailurePolicy defines how unrecognized errors from the admission endpoint are handled - allowed values are Ignore or Fail. Defaults to Fail.

§match_policy: Option<String>

matchPolicy defines how the “rules” list is used to match incoming requests. Allowed values are “Exact” or “Equivalent”.

  • Exact: match a request only if it exactly matches a specified rule. For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1, but “rules” only included apiGroups:\["apps"\], apiVersions:\["v1"\], resources: \["deployments"\], a request to apps/v1beta1 or extensions/v1beta1 would not be sent to the webhook.

  • Equivalent: match a request if modifies a resource listed in rules, even via another API group or version. For example, if deployments can be modified via apps/v1, apps/v1beta1, and extensions/v1beta1, and “rules” only included apiGroups:\["apps"\], apiVersions:\["v1"\], resources: \["deployments"\], a request to apps/v1beta1 or extensions/v1beta1 would be converted to apps/v1 and sent to the webhook.

Defaults to “Equivalent”

§name: String

The name of the admission webhook. Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where “imagepolicy” is the name of the webhook, and kubernetes.io is the name of the organization. Required.

§namespace_selector: Option<LabelSelector>

NamespaceSelector decides whether to run the webhook on an object based on whether the namespace for that object matches the selector. If the object itself is a namespace, the matching is performed on object.metadata.labels. If the object is another cluster scoped resource, it never skips the webhook.

For example, to run the webhook on any objects whose namespace is not associated with “runlevel” of “0” or “1”; you will set the selector as follows: “namespaceSelector”: { “matchExpressions”: [ { “key”: “runlevel”, “operator”: “NotIn”, “values”: [ “0”, “1” ] } ] }

If instead you want to only run the webhook on any objects whose namespace is associated with the “environment” of “prod” or “staging”; you will set the selector as follows: “namespaceSelector”: { “matchExpressions”: [ { “key”: “environment”, “operator”: “In”, “values”: [ “prod”, “staging” ] } ] }

See https://kubernetes.io/docs/concepts/overview/working-with-objects/labels for more examples of label selectors.

Default to the empty LabelSelector, which matches everything.

§object_selector: Option<LabelSelector>

ObjectSelector decides whether to run the webhook based on if the object has matching labels. objectSelector is evaluated against both the oldObject and newObject that would be sent to the webhook, and is considered to match if either object matches the selector. A null object (oldObject in the case of create, or newObject in the case of delete) or an object that cannot have labels (like a DeploymentRollback or a PodProxyOptions object) is not considered to match. Use the object selector only if the webhook is opt-in, because end users may skip the admission webhook by setting the labels. Default to the empty LabelSelector, which matches everything.

§rules: Option<Vec<RuleWithOperations>>

Rules describes what operations on what resources/subresources the webhook cares about. The webhook cares about an operation if it matches any Rule. However, in order to prevent ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks from putting the cluster in a state which cannot be recovered from without completely disabling the plugin, ValidatingAdmissionWebhooks and MutatingAdmissionWebhooks are never called on admission requests for ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects.

§side_effects: String

SideEffects states whether this webhook has side effects. Acceptable values are: None, NoneOnDryRun (webhooks created via v1beta1 may also specify Some or Unknown). Webhooks with side effects MUST implement a reconciliation system, since a request may be rejected by a future step in the admission chain and the side effects therefore need to be undone. Requests with the dryRun attribute will be auto-rejected if they match a webhook with sideEffects == Unknown or Some.

§timeout_seconds: Option<i32>

TimeoutSeconds specifies the timeout for this webhook. After the timeout passes, the webhook call will be ignored or the API call will fail based on the failure policy. The timeout value must be between 1 and 30 seconds. Default to 10 seconds.

Trait Implementations§

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impl Clone for ValidatingWebhook

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fn clone(&self) -> ValidatingWebhook

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ValidatingWebhook

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl DeepMerge for ValidatingWebhook

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fn merge_from(&mut self, other: Self)

Merge other into self.
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impl Default for ValidatingWebhook

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fn default() -> ValidatingWebhook

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for ValidatingWebhook

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fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq<ValidatingWebhook> for ValidatingWebhook

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fn eq(&self, other: &ValidatingWebhook) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for ValidatingWebhook

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for ValidatingWebhook

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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impl<T> DeserializeOwned for Twhere T: for<'de> Deserialize<'de>,