87 lines
3.2 KiB
Go
87 lines
3.2 KiB
Go
// Copyright 2021-2022 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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// Package issuerconfig contains helpers for updating CredentialIssuer status entries.
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package issuerconfig
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import (
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"context"
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"fmt"
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"sort"
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apiequality "k8s.io/apimachinery/pkg/api/equality"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"go.pinniped.dev/generated/latest/apis/concierge/config/v1alpha1"
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"go.pinniped.dev/generated/latest/client/concierge/clientset/versioned"
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)
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// Update a strategy on an existing CredentialIssuer, merging into any existing strategy entries.
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func Update(ctx context.Context, client versioned.Interface, issuer *v1alpha1.CredentialIssuer, strategy v1alpha1.CredentialIssuerStrategy) error {
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// Update the existing object to merge in the new strategy.
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updated := issuer.DeepCopy()
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mergeStrategy(&updated.Status, strategy)
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// If the status has not changed, we're done.
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if apiequality.Semantic.DeepEqual(issuer.Status, updated.Status) {
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return nil
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}
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if _, err := client.ConfigV1alpha1().CredentialIssuers().UpdateStatus(ctx, updated, metav1.UpdateOptions{}); err != nil {
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return fmt.Errorf("failed to update CredentialIssuer status: %w", err)
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}
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return nil
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}
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func mergeStrategy(configToUpdate *v1alpha1.CredentialIssuerStatus, strategy v1alpha1.CredentialIssuerStrategy) {
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var existing *v1alpha1.CredentialIssuerStrategy
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for i := range configToUpdate.Strategies {
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if configToUpdate.Strategies[i].Type == strategy.Type {
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existing = &configToUpdate.Strategies[i]
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break
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}
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}
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if existing != nil {
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if !equalExceptLastUpdated(existing, &strategy) {
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strategy.DeepCopyInto(existing)
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}
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} else {
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configToUpdate.Strategies = append(configToUpdate.Strategies, strategy)
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}
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sort.Stable(sortableStrategies(configToUpdate.Strategies))
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// Special case: the "TokenCredentialRequestAPI" data is mirrored into the deprecated status.kubeConfigInfo field.
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if strategy.Frontend != nil && strategy.Frontend.Type == v1alpha1.TokenCredentialRequestAPIFrontendType {
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configToUpdate.KubeConfigInfo = &v1alpha1.CredentialIssuerKubeConfigInfo{
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Server: strategy.Frontend.TokenCredentialRequestAPIInfo.Server,
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CertificateAuthorityData: strategy.Frontend.TokenCredentialRequestAPIInfo.CertificateAuthorityData,
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}
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}
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}
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// weights are a set of priorities for each strategy type.
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var weights = map[v1alpha1.StrategyType]int{ //nolint:gochecknoglobals
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v1alpha1.KubeClusterSigningCertificateStrategyType: 2, // most preferred strategy
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v1alpha1.ImpersonationProxyStrategyType: 1,
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// unknown strategy types will have weight 0 by default
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}
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type sortableStrategies []v1alpha1.CredentialIssuerStrategy
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func (s sortableStrategies) Len() int { return len(s) }
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func (s sortableStrategies) Less(i, j int) bool {
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if wi, wj := weights[s[i].Type], weights[s[j].Type]; wi != wj {
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return wi > wj
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}
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return s[i].Type < s[j].Type
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}
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func (s sortableStrategies) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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func equalExceptLastUpdated(s1, s2 *v1alpha1.CredentialIssuerStrategy) bool {
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s1 = s1.DeepCopy()
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s2 = s2.DeepCopy()
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s1.LastUpdateTime = metav1.Time{}
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s2.LastUpdateTime = metav1.Time{}
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return apiequality.Semantic.DeepEqual(s1, s2)
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}
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