78 lines
2.1 KiB
Go
78 lines
2.1 KiB
Go
// Package buildermgr — NSWatcher for multi-tenant mode.
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//
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// Listens for Namespaces labeled fission.io/managed=true and calls
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// AddNamespace on envWatcher and packageWatcher so they pick up
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// Environments and Packages in new tenant namespaces without a restart.
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package buildermgr
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import (
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"context"
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"time"
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"go.uber.org/zap"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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k8sInformers "k8s.io/client-go/informers"
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"k8s.io/client-go/kubernetes"
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k8sCache "k8s.io/client-go/tools/cache"
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"github.com/fission/fission/pkg/utils"
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"github.com/fission/fission/pkg/utils/manager"
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)
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// StartNSWatcher watches for Namespaces labeled fission.io/managed=true
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// and immediately registers per-NS informers in envWatcher and pkgWatcher.
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func StartNSWatcher(
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ctx context.Context,
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logger *zap.Logger,
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kubeClient kubernetes.Interface,
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envw *environmentWatcher,
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pkgw *packageWatcher,
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mgr manager.Interface,
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) {
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factory := k8sInformers.NewSharedInformerFactoryWithOptions(
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kubeClient,
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30*time.Minute,
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k8sInformers.WithTweakListOptions(func(opts *metav1.ListOptions) {
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opts.LabelSelector = utils.ManagedNamespaceLabelSelector()
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}),
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)
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nsInformer := factory.Core().V1().Namespaces().Informer()
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_, _ = nsInformer.AddEventHandler(k8sCache.ResourceEventHandlerFuncs{
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AddFunc: func(obj interface{}) {
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ns := builderNSName(obj)
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if ns == "" {
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return
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}
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registerBuilderNamespace(ctx, ns, envw, pkgw, mgr)
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},
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UpdateFunc: func(_, newObj interface{}) {
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nsObj, ok := newObj.(*corev1.Namespace)
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if !ok || !utils.IsManagedNamespace(nsObj.Labels) {
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return
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}
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registerBuilderNamespace(ctx, nsObj.Name, envw, pkgw, mgr)
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},
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})
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mgr.Add(ctx, func(ctx context.Context) {
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logger.Info("buildermgr.NSWatcher: started",
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zap.String("label", utils.ManagedNamespaceLabelSelector()))
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factory.Start(ctx.Done())
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factory.WaitForCacheSync(ctx.Done())
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logger.Info("buildermgr.NSWatcher: cache synced — watching for new namespaces")
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<-ctx.Done()
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logger.Info("buildermgr.NSWatcher: stopped")
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})
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}
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func builderNSName(obj interface{}) string {
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nsObj, ok := obj.(*corev1.Namespace)
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if !ok {
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return ""
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}
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return nsObj.Name
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}
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