132 lines
4.6 KiB
Go
132 lines
4.6 KiB
Go
/*
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Copyright 2021 The Karmada Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package configmanager
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import (
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"sync"
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admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
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webhookutil "k8s.io/apiserver/pkg/util/webhook"
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"k8s.io/client-go/rest"
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configv1alpha1 "github.com/karmada-io/karmada/pkg/apis/config/v1alpha1"
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)
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// WebhookAccessor provides a common interface to get webhook configuration.
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type WebhookAccessor interface {
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// GetUID gets a string that uniquely identifies the webhook.
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GetUID() string
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// GetConfigurationName gets the name of the webhook configuration that owns this webhook.
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GetConfigurationName() string
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// GetName gets the webhook Name field.
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GetName() string
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// GetClientConfig gets the webhook ClientConfig field.
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GetClientConfig() admissionregistrationv1.WebhookClientConfig
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// GetRules gets the webhook Rules field.
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GetRules() []configv1alpha1.RuleWithOperations
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// GetTimeoutSeconds gets the webhook TimeoutSeconds field.
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GetTimeoutSeconds() *int32
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// GetInterpreterContextVersions gets the webhook InterpreterContextVersions field.
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GetInterpreterContextVersions() []string
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// GetRESTClient gets the webhook client.
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GetRESTClient(clientManager *webhookutil.ClientManager) (*rest.RESTClient, error)
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}
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type resourceExploringAccessor struct {
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*configv1alpha1.ResourceInterpreterWebhook
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uid string
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configurationName string
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initClient sync.Once
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client *rest.RESTClient
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clientErr error
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}
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// NewResourceExploringAccessor create an accessor for webhook.
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func NewResourceExploringAccessor(uid, configurationName string, hook *configv1alpha1.ResourceInterpreterWebhook) WebhookAccessor {
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return &resourceExploringAccessor{uid: uid, configurationName: configurationName, ResourceInterpreterWebhook: hook}
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}
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// GetUID gets a string that uniquely identifies the webhook.
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func (a *resourceExploringAccessor) GetUID() string {
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return a.uid
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}
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// GetConfigurationName gets the name of the webhook configuration that owns this webhook.
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func (a *resourceExploringAccessor) GetConfigurationName() string {
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return a.configurationName
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}
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// GetName gets the webhook Name field.
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func (a *resourceExploringAccessor) GetName() string {
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return a.Name
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}
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// GetClientConfig gets the webhook ClientConfig field.
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func (a *resourceExploringAccessor) GetClientConfig() admissionregistrationv1.WebhookClientConfig {
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return a.ClientConfig
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}
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// GetRules gets the webhook Rules field.
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func (a *resourceExploringAccessor) GetRules() []configv1alpha1.RuleWithOperations {
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return a.Rules
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}
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// GetTimeoutSeconds gets the webhook TimeoutSeconds field.
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func (a *resourceExploringAccessor) GetTimeoutSeconds() *int32 {
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return a.TimeoutSeconds
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}
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// GetInterpreterContextVersions gets the webhook InterpreterContextVersions field.
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func (a *resourceExploringAccessor) GetInterpreterContextVersions() []string {
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return a.InterpreterContextVersions
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}
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// GetRESTClient gets the webhook client.
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func (a *resourceExploringAccessor) GetRESTClient(clientManager *webhookutil.ClientManager) (*rest.RESTClient, error) {
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a.initClient.Do(func() {
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a.client, a.clientErr = clientManager.HookClient(hookClientConfigForWebhook(a.Name, a.ClientConfig))
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})
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return a.client, a.clientErr
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}
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// hookClientConfigForWebhook construct a webhookutil.ClientConfig using an admissionregistrationv1.WebhookClientConfig
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// to access v1alpha1.ResourceInterpreterWebhook. webhookutil.ClientConfig is used to create a HookClient
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// and the purpose of the config struct is to share that with other packages that need to create a HookClient.
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func hookClientConfigForWebhook(hookName string, config admissionregistrationv1.WebhookClientConfig) webhookutil.ClientConfig {
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clientConfig := webhookutil.ClientConfig{Name: hookName, CABundle: config.CABundle}
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if config.URL != nil {
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clientConfig.URL = *config.URL
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}
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if config.Service != nil {
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clientConfig.Service = &webhookutil.ClientConfigService{
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Name: config.Service.Name,
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Namespace: config.Service.Namespace,
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}
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if config.Service.Port != nil {
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clientConfig.Service.Port = *config.Service.Port
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} else {
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clientConfig.Service.Port = 443
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}
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if config.Service.Path != nil {
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clientConfig.Service.Path = *config.Service.Path
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}
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}
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return clientConfig
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}
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