77 lines
2.7 KiB
Go
77 lines
2.7 KiB
Go
/*
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Copyright 2017 The Kubernetes 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 initializer
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import (
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"net/url"
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"k8s.io/apiserver/pkg/admission"
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webhookconfig "k8s.io/apiserver/pkg/admission/plugin/webhook/config"
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)
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// WantsServiceResolver defines a fuction that accepts a ServiceResolver for
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// admission plugins that need to make calls to services.
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type WantsServiceResolver interface {
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SetServiceResolver(webhookconfig.ServiceResolver)
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}
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// ServiceResolver knows how to convert a service reference into an actual
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// location.
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type ServiceResolver interface {
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ResolveEndpoint(namespace, name string) (*url.URL, error)
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}
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// WantsAuthenticationInfoResolverWrapper defines a function that wraps the standard AuthenticationInfoResolver
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// to allow the apiserver to control what is returned as auth info
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type WantsAuthenticationInfoResolverWrapper interface {
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SetAuthenticationInfoResolverWrapper(webhookconfig.AuthenticationInfoResolverWrapper)
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admission.InitializationValidator
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}
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// PluginInitializer is used for initialization of the webhook admission plugin.
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type PluginInitializer struct {
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serviceResolver webhookconfig.ServiceResolver
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authenticationInfoResolverWrapper webhookconfig.AuthenticationInfoResolverWrapper
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}
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var _ admission.PluginInitializer = &PluginInitializer{}
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// NewPluginInitializer constructs new instance of PluginInitializer
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func NewPluginInitializer(
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authenticationInfoResolverWrapper webhookconfig.AuthenticationInfoResolverWrapper,
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serviceResolver webhookconfig.ServiceResolver,
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) *PluginInitializer {
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return &PluginInitializer{
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authenticationInfoResolverWrapper: authenticationInfoResolverWrapper,
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serviceResolver: serviceResolver,
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}
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}
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// Initialize checks the initialization interfaces implemented by each plugin
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// and provide the appropriate initialization data
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func (i *PluginInitializer) Initialize(plugin admission.Interface) {
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if wants, ok := plugin.(WantsServiceResolver); ok {
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wants.SetServiceResolver(i.serviceResolver)
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}
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if wants, ok := plugin.(WantsAuthenticationInfoResolverWrapper); ok {
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if i.authenticationInfoResolverWrapper != nil {
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wants.SetAuthenticationInfoResolverWrapper(i.authenticationInfoResolverWrapper)
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}
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}
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}
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