43 lines
1.5 KiB
Go
43 lines
1.5 KiB
Go
/*
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Copyright 2020 VMware, Inc.
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SPDX-License-Identifier: Apache-2.0
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*/
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// Package autoregistration updates the pre-registered APIService.
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package autoregistration
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import (
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"context"
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"fmt"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/util/retry"
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aggregatorclient "k8s.io/kube-aggregator/pkg/client/clientset_generated/clientset"
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placeholderv1alpha1 "github.com/suzerain-io/placeholder-name/kubernetes/1.19/api/apis/placeholder/v1alpha1"
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)
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// UpdateAPIService updates the APIService's CA bundle.
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func UpdateAPIService(ctx context.Context, aggregatorClient aggregatorclient.Interface, aggregatedAPIServerCA []byte) error {
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apiServices := aggregatorClient.ApiregistrationV1().APIServices()
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apiServiceName := placeholderv1alpha1.SchemeGroupVersion.Version + "." + placeholderv1alpha1.GroupName
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if err := retry.RetryOnConflict(retry.DefaultRetry, func() error {
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// Retrieve the latest version of the Service before attempting update.
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// RetryOnConflict uses exponential backoff to avoid exhausting the API server.
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fetchedAPIService, err := apiServices.Get(ctx, apiServiceName, metav1.GetOptions{})
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if err != nil {
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return fmt.Errorf("could not get existing version of API service: %w", err)
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}
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// Update just the field we care about.
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fetchedAPIService.Spec.CABundle = aggregatedAPIServerCA
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_, updateErr := apiServices.Update(ctx, fetchedAPIService, metav1.UpdateOptions{})
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return updateErr
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}); err != nil {
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return fmt.Errorf("could not update API service: %w", err)
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}
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return nil
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}
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