200 lines
8.1 KiB
Go
200 lines
8.1 KiB
Go
package binding
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import (
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"context"
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apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
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"k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/client-go/dynamic"
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"k8s.io/client-go/tools/record"
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"k8s.io/klog/v2"
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controllerruntime "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/handler"
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"sigs.k8s.io/controller-runtime/pkg/reconcile"
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"sigs.k8s.io/controller-runtime/pkg/source"
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policyv1alpha1 "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1"
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workv1alpha1 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha1"
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"github.com/karmada-io/karmada/pkg/util"
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"github.com/karmada-io/karmada/pkg/util/helper"
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"github.com/karmada-io/karmada/pkg/util/overridemanager"
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)
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// ClusterResourceBindingControllerName is the controller name that will be used when reporting events.
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const ClusterResourceBindingControllerName = "cluster-resource-binding-controller"
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// ClusterResourceBindingController is to sync ClusterResourceBinding.
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type ClusterResourceBindingController struct {
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client.Client // used to operate ClusterResourceBinding resources.
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DynamicClient dynamic.Interface // used to fetch arbitrary resources.
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EventRecorder record.EventRecorder
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RESTMapper meta.RESTMapper
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OverrideManager overridemanager.OverrideManager
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}
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// Reconcile performs a full reconciliation for the object referred to by the Request.
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// The Controller will requeue the Request to be processed again if an error is non-nil or
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// Result.Requeue is true, otherwise upon completion it will remove the work from the queue.
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func (c *ClusterResourceBindingController) Reconcile(ctx context.Context, req controllerruntime.Request) (controllerruntime.Result, error) {
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klog.V(4).Infof("Reconciling ClusterResourceBinding %s.", req.NamespacedName.String())
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clusterResourceBinding := &workv1alpha1.ClusterResourceBinding{}
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if err := c.Client.Get(context.TODO(), req.NamespacedName, clusterResourceBinding); err != nil {
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// The resource no longer exist, clean up derived Work objects.
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if errors.IsNotFound(err) {
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return helper.DeleteWorks(c.Client, labels.Set{
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workv1alpha1.ClusterResourceBindingLabel: req.Name,
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})
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}
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return controllerruntime.Result{Requeue: true}, err
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}
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if !clusterResourceBinding.DeletionTimestamp.IsZero() {
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return controllerruntime.Result{}, nil
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}
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isReady := helper.IsBindingReady(clusterResourceBinding.Spec.Clusters)
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if !isReady {
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klog.Infof("ClusterResourceBinding %s is not ready to sync", clusterResourceBinding.GetName())
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return controllerruntime.Result{}, nil
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}
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return c.syncBinding(clusterResourceBinding)
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}
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// syncBinding will sync clusterResourceBinding to Works.
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func (c *ClusterResourceBindingController) syncBinding(binding *workv1alpha1.ClusterResourceBinding) (controllerruntime.Result, error) {
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clusterNames := helper.GetBindingClusterNames(binding.Spec.Clusters)
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works, err := helper.FindOrphanWorks(c.Client, "", binding.Name, clusterNames, apiextensionsv1.ClusterScoped)
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if err != nil {
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klog.Errorf("Failed to find orphan works by ClusterResourceBinding(%s). Error: %v.", binding.GetName(), err)
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return controllerruntime.Result{Requeue: true}, err
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}
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err = helper.RemoveOrphanWorks(c.Client, works)
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if err != nil {
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klog.Errorf("Failed to remove orphan works by clusterResourceBinding(%s). Error: %v.", binding.GetName(), err)
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return controllerruntime.Result{Requeue: true}, err
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}
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workload, err := helper.FetchWorkload(c.DynamicClient, c.RESTMapper, binding.Spec.Resource)
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if err != nil {
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klog.Errorf("Failed to fetch workload for clusterResourceBinding(%s). Error: %v.", binding.GetName(), err)
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return controllerruntime.Result{Requeue: true}, err
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}
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err = ensureWork(c.Client, workload, c.OverrideManager, binding, apiextensionsv1.ClusterScoped)
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if err != nil {
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klog.Errorf("Failed to transform clusterResourceBinding(%s) to works. Error: %v.", binding.GetName(), err)
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return controllerruntime.Result{Requeue: true}, err
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}
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err = helper.AggregateClusterResourceBindingWorkStatus(c.Client, binding, workload)
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if err != nil {
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klog.Errorf("Failed to aggregate workStatuses to clusterResourceBinding(%s). Error: %v.", binding.GetName(), err)
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return controllerruntime.Result{Requeue: true}, err
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}
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klog.V(4).Infof("Update clusterResourceBinding(%s) with AggregatedStatus successfully.", binding.Name)
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return controllerruntime.Result{}, nil
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}
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// SetupWithManager creates a controller and register to controller manager.
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func (c *ClusterResourceBindingController) SetupWithManager(mgr controllerruntime.Manager) error {
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workFn := handler.MapFunc(
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func(a client.Object) []reconcile.Request {
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var requests []reconcile.Request
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labels := a.GetLabels()
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clusterResourcebindingName, nameExist := labels[workv1alpha1.ClusterResourceBindingLabel]
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if !nameExist {
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return nil
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}
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namespacesName := types.NamespacedName{
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Name: clusterResourcebindingName,
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}
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requests = append(requests, reconcile.Request{NamespacedName: namespacesName})
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return requests
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})
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return controllerruntime.NewControllerManagedBy(mgr).For(&workv1alpha1.ClusterResourceBinding{}).
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Watches(&source.Kind{Type: &workv1alpha1.Work{}}, handler.EnqueueRequestsFromMapFunc(workFn), workPredicateFn).
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Watches(&source.Kind{Type: &policyv1alpha1.OverridePolicy{}}, handler.EnqueueRequestsFromMapFunc(c.newOverridePolicyFunc())).
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Watches(&source.Kind{Type: &policyv1alpha1.ClusterOverridePolicy{}}, handler.EnqueueRequestsFromMapFunc(c.newOverridePolicyFunc())).
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Watches(&source.Kind{Type: &policyv1alpha1.ReplicaSchedulingPolicy{}}, handler.EnqueueRequestsFromMapFunc(c.newReplicaSchedulingPolicyFunc())).
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Complete(c)
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}
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func (c *ClusterResourceBindingController) newOverridePolicyFunc() handler.MapFunc {
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return func(a client.Object) []reconcile.Request {
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var overrideRS []policyv1alpha1.ResourceSelector
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switch t := a.(type) {
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case *policyv1alpha1.ClusterOverridePolicy:
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overrideRS = t.Spec.ResourceSelectors
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case *policyv1alpha1.OverridePolicy:
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overrideRS = t.Spec.ResourceSelectors
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default:
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return nil
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}
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bindingList := &workv1alpha1.ClusterResourceBindingList{}
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if err := c.Client.List(context.TODO(), bindingList); err != nil {
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klog.Errorf("Failed to list clusterResourceBindings, error: %v", err)
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return nil
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}
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var requests []reconcile.Request
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for _, binding := range bindingList.Items {
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workload, err := helper.FetchWorkload(c.DynamicClient, c.RESTMapper, binding.Spec.Resource)
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if err != nil {
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klog.Errorf("Failed to fetch workload for clusterResourceBinding(%s). Error: %v.", binding.Name, err)
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return nil
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}
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for _, rs := range overrideRS {
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if util.ResourceMatches(workload, rs) {
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klog.V(2).Infof("Enqueue ClusterResourceBinding(%s) as override policy(%s/%s) changes.", binding.Name, a.GetNamespace(), a.GetName())
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requests = append(requests, reconcile.Request{NamespacedName: types.NamespacedName{Name: binding.Name}})
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break
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}
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}
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}
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return requests
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}
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}
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func (c *ClusterResourceBindingController) newReplicaSchedulingPolicyFunc() handler.MapFunc {
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return func(a client.Object) []reconcile.Request {
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rspResourceSelectors := a.(*policyv1alpha1.ReplicaSchedulingPolicy).Spec.ResourceSelectors
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bindingList := &workv1alpha1.ClusterResourceBindingList{}
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if err := c.Client.List(context.TODO(), bindingList); err != nil {
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klog.Errorf("Failed to list clusterResourceBindings, error: %v", err)
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return nil
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}
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var requests []reconcile.Request
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for _, binding := range bindingList.Items {
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workload, err := helper.FetchWorkload(c.DynamicClient, c.RESTMapper, binding.Spec.Resource)
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if err != nil {
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klog.Errorf("Failed to fetch workload for clusterResourceBinding(%s). Error: %v.", binding.Name, err)
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return nil
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}
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for _, rs := range rspResourceSelectors {
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if util.ResourceMatches(workload, rs) {
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klog.V(2).Infof("Enqueue ClusterResourceBinding(%s) as replica scheduling policy(%s/%s) changes.", binding.Name, a.GetNamespace(), a.GetName())
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requests = append(requests, reconcile.Request{NamespacedName: types.NamespacedName{Name: binding.Name}})
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break
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}
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}
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}
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return requests
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}
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}
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