mirror of https://github.com/knative/pkg.git
82 lines
2.5 KiB
Go
82 lines
2.5 KiB
Go
/*
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Copyright 2019 The Knative 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 certificates
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import (
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"context"
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// Injection stuff
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kubeclient "knative.dev/pkg/client/injection/kube/client"
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secretinformer "knative.dev/pkg/injection/clients/namespacedkube/informers/core/v1/secret"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/client-go/tools/cache"
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"knative.dev/pkg/configmap"
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"knative.dev/pkg/controller"
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"knative.dev/pkg/logging"
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pkgreconciler "knative.dev/pkg/reconciler"
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"knative.dev/pkg/system"
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"knative.dev/pkg/webhook"
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)
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// NewController constructs a controller for materializing webhook certificates.
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// In order for it to bootstrap, an empty secret should be created with the
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// expected name (and lifecycle managed accordingly), and thereafter this controller
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// will ensure it has the appropriate shape for the webhook.
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func NewController(
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ctx context.Context,
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cmw configmap.Watcher,
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) *controller.Impl {
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client := kubeclient.Get(ctx)
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secretInformer := secretinformer.Get(ctx)
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options := webhook.GetOptions(ctx)
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key := types.NamespacedName{
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Namespace: system.Namespace(),
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Name: options.SecretName,
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}
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wh := &reconciler{
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LeaderAwareFuncs: pkgreconciler.LeaderAwareFuncs{
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// Enqueue the key whenever we become leader.
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PromoteFunc: func(bkt pkgreconciler.Bucket, enq func(pkgreconciler.Bucket, types.NamespacedName)) error {
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enq(bkt, key)
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return nil
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},
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},
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key: key,
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serviceName: options.ServiceName,
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client: client,
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secretlister: secretInformer.Lister(),
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}
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const queueName = "WebhookCertificates"
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c := controller.NewContext(ctx, wh, controller.ControllerOptions{WorkQueueName: queueName, Logger: logging.FromContext(ctx).Named(queueName)})
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// Reconcile when the cert bundle changes.
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secretInformer.Informer().AddEventHandler(cache.FilteringResourceEventHandler{
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FilterFunc: controller.FilterWithNameAndNamespace(key.Namespace, key.Name),
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// It doesn't matter what we enqueue because we will always Reconcile
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// the named MWH resource.
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Handler: controller.HandleAll(c.Enqueue),
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})
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return c
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}
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