mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2025-03-31 04:04:51 +00:00
e6e32a88c3
Implement a simple controller stub that operates on NodeFeatureRule objects. The controller does not yet have any functionality other than logging changes in the (NodeFeatureRule) objecs it is watching. Also update the documentation on the -no-publish flag to match the new functionality.
77 lines
2.3 KiB
Go
77 lines
2.3 KiB
Go
/*
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Copyright 2021 The Kubernetes 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 nfdmaster
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import (
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"time"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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restclient "k8s.io/client-go/rest"
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"k8s.io/client-go/tools/cache"
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"k8s.io/klog/v2"
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nfdv1alpha1 "sigs.k8s.io/node-feature-discovery/pkg/apis/nfd/v1alpha1"
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nfdclientset "sigs.k8s.io/node-feature-discovery/pkg/generated/clientset/versioned"
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nfdscheme "sigs.k8s.io/node-feature-discovery/pkg/generated/clientset/versioned/scheme"
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nfdinformers "sigs.k8s.io/node-feature-discovery/pkg/generated/informers/externalversions"
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nfdlisters "sigs.k8s.io/node-feature-discovery/pkg/generated/listers/nfd/v1alpha1"
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)
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type nfdController struct {
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lister nfdlisters.NodeFeatureRuleLister
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stopChan chan struct{}
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}
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func newNfdController(config *restclient.Config) *nfdController {
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c := &nfdController{
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stopChan: make(chan struct{}, 1),
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}
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nfdClient := nfdclientset.NewForConfigOrDie(config)
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informerFactory := nfdinformers.NewSharedInformerFactory(nfdClient, 5*time.Minute)
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informer := informerFactory.Nfd().V1alpha1().NodeFeatureRules()
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informer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
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AddFunc: func(object interface{}) {
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key, _ := cache.MetaNamespaceKeyFunc(object)
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klog.V(2).Infof("LabelRule %v added", key)
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},
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UpdateFunc: func(oldObject, newObject interface{}) {
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key, _ := cache.MetaNamespaceKeyFunc(newObject)
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klog.V(2).Infof("LabelRule %v updated", key)
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},
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DeleteFunc: func(object interface{}) {
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key, _ := cache.MetaNamespaceKeyFunc(object)
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klog.V(2).Infof("LabelRule %v deleted", key)
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},
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})
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informerFactory.Start(c.stopChan)
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utilruntime.Must(nfdv1alpha1.AddToScheme(nfdscheme.Scheme))
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c.lister = informer.Lister()
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return c
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}
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func (c *nfdController) stop() {
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select {
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case c.stopChan <- struct{}{}:
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default:
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}
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}
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