20b21e8639
- The certs manager controller, along with its sibling certs expirer and certs observer controllers, are generally useful for any process that wants to create its own CA and TLS certs, but only if the updating of the APIService is not included in those controllers - So that functionality for updating APIServices is moved to a new controller which watches the same Secret which is used by those other controllers - Also parameterize `NewCertsManagerController` with the service name and the CA common name to make the controller more reusable
47 lines
1.5 KiB
Go
47 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 apicerts
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import (
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"bytes"
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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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pinnipedv1alpha1 "github.com/suzerain-io/pinniped/generated/1.19/apis/pinniped/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 := pinnipedv1alpha1.SchemeGroupVersion.Version + "." + pinnipedv1alpha1.GroupName
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if err := retry.RetryOnConflict(retry.DefaultRetry, func() error {
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// Retrieve the latest version of the Service.
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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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if bytes.Equal(fetchedAPIService.Spec.CABundle, aggregatedAPIServerCA) {
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// Already has the same value, perhaps because another process already updated the object, so no need to update.
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return nil
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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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