69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
// Copyright 2020 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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package apicerts
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import (
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"fmt"
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k8serrors "k8s.io/apimachinery/pkg/api/errors"
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corev1informers "k8s.io/client-go/informers/core/v1"
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"k8s.io/klog/v2"
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pinnipedcontroller "go.pinniped.dev/internal/controller"
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"go.pinniped.dev/internal/controllerlib"
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"go.pinniped.dev/internal/dynamiccert"
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)
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type certsObserverController struct {
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namespace string
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certsSecretResourceName string
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dynamicCertProvider dynamiccert.Provider
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secretInformer corev1informers.SecretInformer
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}
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func NewCertsObserverController(
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namespace string,
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certsSecretResourceName string,
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dynamicCertProvider dynamiccert.Provider,
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secretInformer corev1informers.SecretInformer,
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withInformer pinnipedcontroller.WithInformerOptionFunc,
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) controllerlib.Controller {
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return controllerlib.New(
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controllerlib.Config{
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Name: "certs-observer-controller",
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Syncer: &certsObserverController{
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namespace: namespace,
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certsSecretResourceName: certsSecretResourceName,
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dynamicCertProvider: dynamicCertProvider,
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secretInformer: secretInformer,
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},
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},
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withInformer(
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secretInformer,
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pinnipedcontroller.NameAndNamespaceExactMatchFilterFactory(certsSecretResourceName, namespace),
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controllerlib.InformerOption{},
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),
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)
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}
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func (c *certsObserverController) Sync(_ controllerlib.Context) error {
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// Try to get the secret from the informer cache.
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certSecret, err := c.secretInformer.Lister().Secrets(c.namespace).Get(c.certsSecretResourceName)
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notFound := k8serrors.IsNotFound(err)
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if err != nil && !notFound {
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return fmt.Errorf("failed to get %s/%s secret: %w", c.namespace, c.certsSecretResourceName, err)
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}
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if notFound {
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klog.Info("certsObserverController Sync found that the secret does not exist yet or was deleted")
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// The secret does not exist yet or was deleted.
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c.dynamicCertProvider.Set(nil, nil)
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return nil
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}
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// Mutate the in-memory cert provider to update with the latest cert values.
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c.dynamicCertProvider.Set(certSecret.Data[tlsCertificateChainSecretKey], certSecret.Data[tlsPrivateKeySecretKey])
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klog.Info("certsObserverController Sync updated certs in the dynamic cert provider")
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return nil
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}
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