mirror of
https://github.com/k3s-io/kubernetes.git
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cb7468b077
The image puller's PullImage() method should be just a dumb pull without any further logic. Make it accept everything it needs to pull an image and defer any other magic to the image manager.
100 lines
2.9 KiB
Go
100 lines
2.9 KiB
Go
/*
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Copyright 2024 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 plugin
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import (
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"sync"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/apimachinery/pkg/util/sets"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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"k8s.io/klog/v2"
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"k8s.io/kubernetes/pkg/credentialprovider"
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"k8s.io/kubernetes/pkg/features"
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)
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type provider struct {
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name string
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impl *pluginProvider
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}
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var providersMutex sync.RWMutex
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var providers = make([]provider, 0)
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var seenProviderNames = sets.NewString()
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func registerCredentialProviderPlugin(name string, p *pluginProvider) {
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providersMutex.Lock()
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defer providersMutex.Unlock()
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if seenProviderNames.Has(name) {
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klog.Fatalf("Credential provider %q was registered twice", name)
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}
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seenProviderNames.Insert(name)
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providers = append(providers, provider{name, p})
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klog.V(4).Infof("Registered credential provider %q", name)
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}
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type externalCredentialProviderKeyring struct {
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providers []credentialprovider.DockerConfigProvider
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}
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func NewExternalCredentialProviderDockerKeyring(podNamespace, podName, podUID, serviceAccountName string) credentialprovider.DockerKeyring {
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providersMutex.RLock()
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defer providersMutex.RUnlock()
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keyring := &externalCredentialProviderKeyring{
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providers: make([]credentialprovider.DockerConfigProvider, 0, len(providers)),
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}
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for _, p := range providers {
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if !p.impl.Enabled() {
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continue
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}
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pp := &perPodPluginProvider{
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name: p.name,
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provider: p.impl,
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}
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if utilfeature.DefaultFeatureGate.Enabled(features.KubeletServiceAccountTokenForCredentialProviders) {
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klog.V(4).InfoS("Generating per pod credential provider", "provider", p.name, "podName", podName, "podNamespace", podNamespace, "podUID", podUID, "serviceAccountName", serviceAccountName)
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pp.podNamespace = podNamespace
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pp.podName = podName
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pp.podUID = types.UID(podUID)
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pp.serviceAccountName = serviceAccountName
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} else {
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klog.V(4).InfoS("Generating credential provider", "provider", p.name)
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}
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keyring.providers = append(keyring.providers, pp)
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}
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return keyring
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}
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func (k *externalCredentialProviderKeyring) Lookup(image string) ([]credentialprovider.TrackedAuthConfig, bool) {
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keyring := &credentialprovider.BasicDockerKeyring{}
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for _, p := range k.providers {
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// TODO: modify the credentialprovider.CredentialSource to contain the SA/pod information
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keyring.Add(nil, p.Provide(image))
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}
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return keyring.Lookup(image)
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}
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