/
predicate.go
78 lines (72 loc) · 2.29 KB
/
predicate.go
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package utils
import (
"context"
"reflect"
volumegroupv1 "github.com/IBM/csi-volume-group-operator/api/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
ctrl "sigs.k8s.io/controller-runtime"
runtimeclient "sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
)
var (
PvcPredicate = predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool {
return true
},
DeleteFunc: func(e event.DeleteEvent) bool {
return false
},
UpdateFunc: func(e event.UpdateEvent) bool {
return isLabelsChanged(e.ObjectOld, e.ObjectNew) || isPhaseChanged(e.ObjectOld, e.ObjectNew)
},
GenericFunc: func(e event.GenericEvent) bool {
return false
},
}
FinalizerPredicate = predicate.Funcs{
UpdateFunc: func(e event.UpdateEvent) bool {
return !reflect.DeepEqual(e.ObjectNew.GetFinalizers(), e.ObjectOld.GetFinalizers())
},
}
)
func isLabelsChanged(oldObject, newObject runtimeclient.Object) bool {
return !reflect.DeepEqual(oldObject.(*corev1.PersistentVolumeClaim).Labels,
newObject.(*corev1.PersistentVolumeClaim).Labels)
}
func isPhaseChanged(oldObject, newObject runtimeclient.Object) bool {
return !reflect.DeepEqual(oldObject.(*corev1.PersistentVolumeClaim).Status.Phase,
newObject.(*corev1.PersistentVolumeClaim).Status.Phase)
}
func CreateRequests(client runtimeclient.Client) handler.EventHandler {
return handler.EnqueueRequestsFromMapFunc(
func(object runtimeclient.Object) []reconcile.Request {
var vgList volumegroupv1.VolumeGroupList
if err := client.List(context.TODO(), &vgList); err != nil {
return []ctrl.Request{}
}
// Create a reconcile request for each matching VolumeGroup.
var requests []ctrl.Request
for _, vg := range vgList.Items {
if vg.Spec.Source.Selector == nil {
continue
}
isVgMatchPvc, err := areLabelsMatchLabelSelector(object.GetLabels(), *vg.Spec.Source.Selector)
if err != nil {
return []ctrl.Request{}
}
if isVgMatchPvc {
requests = append(requests, ctrl.Request{
NamespacedName: types.NamespacedName{
Namespace: vg.Namespace,
Name: vg.Name,
},
})
}
}
return requests
})
}