/
clusteroperator.go
153 lines (128 loc) · 5.18 KB
/
clusteroperator.go
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package operator
import (
"time"
"k8s.io/apimachinery/pkg/api/errors"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
appsv1informers "k8s.io/client-go/informers/apps/v1"
appsv1listers "k8s.io/client-go/listers/apps/v1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/workqueue"
"k8s.io/klog/v2"
configv1 "github.com/openshift/api/config/v1"
configv1client "github.com/openshift/client-go/config/clientset/versioned/typed/config/v1"
configv1informers "github.com/openshift/client-go/config/informers/externalversions/config/v1"
configv1listers "github.com/openshift/client-go/config/listers/config/v1"
imageregistryv1informers "github.com/openshift/client-go/imageregistry/informers/externalversions/imageregistry/v1"
imageregistryv1listers "github.com/openshift/client-go/imageregistry/listers/imageregistry/v1"
"github.com/openshift/cluster-image-registry-operator/pkg/defaults"
"github.com/openshift/cluster-image-registry-operator/pkg/resource"
)
type ClusterOperatorStatusController struct {
relatedObjects []configv1.ObjectReference
clusterOperatorClient configv1client.ClusterOperatorsGetter
clusterOperatorLister configv1listers.ClusterOperatorLister
imageRegistryConfigLister imageregistryv1listers.ConfigLister
imagePrunerLister imageregistryv1listers.ImagePrunerLister
deploymentLister appsv1listers.DeploymentNamespaceLister
cachesToSync []cache.InformerSynced
queue workqueue.RateLimitingInterface
}
func NewClusterOperatorStatusController(
relatedObjects []configv1.ObjectReference,
configClient configv1client.ConfigV1Interface,
clusterOperatorInformer configv1informers.ClusterOperatorInformer,
imageRegistryConfigInformer imageregistryv1informers.ConfigInformer,
imagePrunerInformer imageregistryv1informers.ImagePrunerInformer,
deploymentInformer appsv1informers.DeploymentInformer,
) (*ClusterOperatorStatusController, error) {
c := &ClusterOperatorStatusController{
relatedObjects: relatedObjects,
clusterOperatorClient: configClient,
clusterOperatorLister: clusterOperatorInformer.Lister(),
imageRegistryConfigLister: imageRegistryConfigInformer.Lister(),
imagePrunerLister: imagePrunerInformer.Lister(),
deploymentLister: deploymentInformer.Lister().Deployments(defaults.ImageRegistryOperatorNamespace),
queue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "ClusterOperatorStatusController"),
}
if _, err := clusterOperatorInformer.Informer().AddEventHandler(c.eventHandler()); err != nil {
return nil, err
}
c.cachesToSync = append(c.cachesToSync, clusterOperatorInformer.Informer().HasSynced)
if _, err := imageRegistryConfigInformer.Informer().AddEventHandler(c.eventHandler()); err != nil {
return nil, err
}
c.cachesToSync = append(c.cachesToSync, imageRegistryConfigInformer.Informer().HasSynced)
if _, err := imagePrunerInformer.Informer().AddEventHandler(c.eventHandler()); err != nil {
return nil, err
}
c.cachesToSync = append(c.cachesToSync, imagePrunerInformer.Informer().HasSynced)
if _, err := deploymentInformer.Informer().AddEventHandler(c.eventHandler()); err != nil {
return nil, err
}
c.cachesToSync = append(c.cachesToSync, deploymentInformer.Informer().HasSynced)
return c, nil
}
func (c *ClusterOperatorStatusController) eventHandler() cache.ResourceEventHandler {
const workQueueKey = "instance"
return cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) { c.queue.Add(workQueueKey) },
UpdateFunc: func(old, new interface{}) { c.queue.Add(workQueueKey) },
DeleteFunc: func(obj interface{}) { c.queue.Add(workQueueKey) },
}
}
func (c *ClusterOperatorStatusController) runWorker() {
for c.processNextWorkItem() {
}
}
func (c *ClusterOperatorStatusController) processNextWorkItem() bool {
obj, shutdown := c.queue.Get()
if shutdown {
return false
}
defer c.queue.Done(obj)
klog.V(4).Infof("get event from workqueue")
if err := c.sync(); err != nil {
c.queue.AddRateLimited(workqueueKey)
klog.Errorf("unable to sync ClusterOperatorStatusController: %s, requeuing", err)
} else {
c.queue.Forget(obj)
klog.V(4).Infof("event from workqueue successfully processed")
}
return true
}
func (c *ClusterOperatorStatusController) sync() error {
cr, err := c.imageRegistryConfigLister.Get("cluster")
if err != nil {
return err
}
cr = cr.DeepCopy()
imagepruner, err := c.imagePrunerLister.Get("cluster")
if err != nil {
if !errors.IsNotFound(err) {
klog.Warningf("unable to get imagepruner: %v", err)
}
imagepruner = nil
}
mut := resource.NewGeneratorClusterOperator(
c.deploymentLister,
c.clusterOperatorLister,
c.clusterOperatorClient,
cr,
imagepruner,
c.relatedObjects,
)
return resource.ApplyMutator(mut)
}
func (c *ClusterOperatorStatusController) Run(stopCh <-chan struct{}) {
defer utilruntime.HandleCrash()
defer c.queue.ShutDown()
klog.Infof("Starting ClusterOperatorStatusController")
if !cache.WaitForCacheSync(stopCh, c.cachesToSync...) {
return
}
go wait.Until(c.runWorker, time.Second, stopCh)
klog.Infof("Started ClusterOperatorStatusController")
<-stopCh
klog.Infof("Shutting down ClusterOperatorStatusController")
}