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controller.go
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controller.go
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package addonconfiguration
import (
"context"
"errors"
"time"
"github.com/openshift/library-go/pkg/controller/factory"
"github.com/openshift/library-go/pkg/operator/events"
apierrors "k8s.io/apimachinery/pkg/api/errors"
utilerrors "k8s.io/apimachinery/pkg/util/errors"
"k8s.io/client-go/tools/cache"
"k8s.io/klog/v2"
"open-cluster-management.io/addon-framework/pkg/index"
addonv1alpha1 "open-cluster-management.io/api/addon/v1alpha1"
addonv1alpha1client "open-cluster-management.io/api/client/addon/clientset/versioned"
addoninformerv1alpha1 "open-cluster-management.io/api/client/addon/informers/externalversions/addon/v1alpha1"
addonlisterv1alpha1 "open-cluster-management.io/api/client/addon/listers/addon/v1alpha1"
clusterinformersv1beta1 "open-cluster-management.io/api/client/cluster/informers/externalversions/cluster/v1beta1"
clusterlisterv1beta1 "open-cluster-management.io/api/client/cluster/listers/cluster/v1beta1"
"open-cluster-management.io/sdk-go/pkg/patcher"
"open-cluster-management.io/ocm/pkg/common/helpers"
"open-cluster-management.io/ocm/pkg/common/queue"
)
const (
// maxRequeueTime is the minimum informer resync period
maxRequeueTime = 10 * time.Minute
)
// addonConfigurationController is a controller to update configuration of mca with the following order
// 1. use configuration in mca spec if it is set
// 2. use configuration in install strategy
// 3. use configuration in the default configuration in cma
type addonConfigurationController struct {
addonClient addonv1alpha1client.Interface
clusterManagementAddonLister addonlisterv1alpha1.ClusterManagementAddOnLister
managedClusterAddonIndexer cache.Indexer
addonFilterFunc factory.EventFilterFunc
placementLister clusterlisterv1beta1.PlacementLister
placementDecisionGetter helpers.PlacementDecisionGetter
reconcilers []addonConfigurationReconcile
}
type addonConfigurationReconcile interface {
reconcile(ctx context.Context, cma *addonv1alpha1.ClusterManagementAddOn,
graph *configurationGraph) (*addonv1alpha1.ClusterManagementAddOn, reconcileState, error)
}
type reconcileState int64
const (
reconcileStop reconcileState = iota
reconcileContinue
)
func NewAddonConfigurationController(
addonClient addonv1alpha1client.Interface,
addonInformers addoninformerv1alpha1.ManagedClusterAddOnInformer,
clusterManagementAddonInformers addoninformerv1alpha1.ClusterManagementAddOnInformer,
placementInformer clusterinformersv1beta1.PlacementInformer,
placementDecisionInformer clusterinformersv1beta1.PlacementDecisionInformer,
addonFilterFunc factory.EventFilterFunc,
recorder events.Recorder,
) factory.Controller {
c := &addonConfigurationController{
addonClient: addonClient,
clusterManagementAddonLister: clusterManagementAddonInformers.Lister(),
managedClusterAddonIndexer: addonInformers.Informer().GetIndexer(),
placementLister: placementInformer.Lister(),
placementDecisionGetter: helpers.PlacementDecisionGetter{Client: placementDecisionInformer.Lister()},
addonFilterFunc: addonFilterFunc,
}
c.reconcilers = []addonConfigurationReconcile{
&managedClusterAddonConfigurationReconciler{
addonClient: addonClient,
},
&cmaProgressingReconciler{
patcher: patcher.NewPatcher[
*addonv1alpha1.ClusterManagementAddOn, addonv1alpha1.ClusterManagementAddOnSpec, addonv1alpha1.ClusterManagementAddOnStatus](
addonClient.AddonV1alpha1().ClusterManagementAddOns()),
},
}
controllerFactory := factory.New().WithFilteredEventsInformersQueueKeysFunc(
queue.QueueKeyByMetaNamespaceName,
c.addonFilterFunc,
clusterManagementAddonInformers.Informer()).
WithInformersQueueKeysFunc(queue.QueueKeyByMetaNamespaceName, addonInformers.Informer()).
WithInformersQueueKeysFunc(
index.ClusterManagementAddonByPlacementDecisionQueueKey(clusterManagementAddonInformers), placementDecisionInformer.Informer()).
WithInformersQueueKeysFunc(
index.ClusterManagementAddonByPlacementQueueKey(clusterManagementAddonInformers), placementInformer.Informer())
return controllerFactory.WithSync(c.sync).ToController("addon-configuration-controller", recorder)
}
func (c *addonConfigurationController) sync(ctx context.Context, syncCtx factory.SyncContext) error {
logger := klog.FromContext(ctx)
key := syncCtx.QueueKey()
_, addonName, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
// ignore addon whose key is invalid
return nil
}
logger.V(4).Info("Reconciling addon", "addonName", addonName)
cma, err := c.clusterManagementAddonLister.Get(addonName)
switch {
case apierrors.IsNotFound(err):
return nil
case err != nil:
return err
}
if !c.addonFilterFunc(cma) {
return nil
}
cma = cma.DeepCopy()
graph, err := c.buildConfigurationGraph(logger, cma)
if err != nil {
return err
}
// generate the rollout result before calling reconcile()
// so that all the reconcilers are using the same rollout result
err = graph.generateRolloutResult()
if err != nil {
return err
}
var state reconcileState
var errs []error
minRequeue := maxRequeueTime
for _, reconciler := range c.reconcilers {
cma, state, err = reconciler.reconcile(ctx, cma, graph)
var rqe helpers.RequeueError
if err != nil && errors.As(err, &rqe) {
if minRequeue > rqe.RequeueTime {
minRequeue = rqe.RequeueTime
}
} else if err != nil {
errs = append(errs, err)
}
if state == reconcileStop {
break
}
}
if len(errs) > 0 {
return utilerrors.NewAggregate(errs)
}
if minRequeue < maxRequeueTime {
syncCtx.Queue().AddAfter(key, minRequeue)
}
return nil
}
func (c *addonConfigurationController) buildConfigurationGraph(logger klog.Logger, cma *addonv1alpha1.ClusterManagementAddOn) (*configurationGraph, error) {
graph := newGraph(cma.Spec.SupportedConfigs, cma.Status.DefaultConfigReferences)
addons, err := c.managedClusterAddonIndexer.ByIndex(index.ManagedClusterAddonByName, cma.Name)
if err != nil {
return graph, err
}
// add all existing addons to the default at first
for _, addonObject := range addons {
addon := addonObject.(*addonv1alpha1.ManagedClusterAddOn)
graph.addAddonNode(addon)
}
if cma.Spec.InstallStrategy.Type == "" || cma.Spec.InstallStrategy.Type == addonv1alpha1.AddonInstallStrategyManual {
return graph, nil
}
// check each install strategy in status
var errs []error
for _, installProgression := range cma.Status.InstallProgressions {
for _, installStrategy := range cma.Spec.InstallStrategy.Placements {
if installStrategy.PlacementRef != installProgression.PlacementRef {
continue
}
// add placement node
err = graph.addPlacementNode(installStrategy, installProgression, c.placementLister, c.placementDecisionGetter)
if err != nil {
errs = append(errs, err)
continue
}
}
}
return graph, utilerrors.NewAggregate(errs)
}