/
finalizers.go
65 lines (55 loc) · 2.04 KB
/
finalizers.go
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package common
import (
"context"
"fmt"
pkgerrors "github.com/pkg/errors"
"k8s.io/apimachinery/pkg/api/errors"
meta "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/sets"
"sigs.k8s.io/controller-runtime/pkg/client"
)
func HasFinalizer(obj runtime.Object) bool {
objectMeta := getObjectMeta(obj)
finalizers := sets.NewString(objectMeta.GetFinalizers()...)
return finalizers.Has(FinalizerName)
}
func RemoveFinalizer(ctx context.Context, obj runtime.Object, cl client.Client) error {
reqLogger := LogFromContext(ctx)
reqLogger.Info(fmt.Sprintf("Removing finalizer from %s", obj.GetObjectKind().GroupVersionKind().Kind))
objectMeta := getObjectMeta(obj)
finalizers := sets.NewString(objectMeta.GetFinalizers()...)
finalizers.Delete(FinalizerName)
objectMeta.SetFinalizers(finalizers.List())
err := cl.Update(ctx, obj)
if errors.IsNotFound(err) {
// We're reconciling a stale instance. The object no longer exists, so we're done.
return nil
} else if err != nil {
return pkgerrors.Wrapf(err, "Could not remove finalizer from %s/%s", objectMeta.GetNamespace(), objectMeta.GetName())
}
return nil
}
func AddFinalizer(ctx context.Context, obj runtime.Object, cl client.Client) error {
reqLogger := LogFromContext(ctx)
reqLogger.Info(fmt.Sprintf("Adding finalizer to %s", obj.GetObjectKind().GroupVersionKind().Kind))
objectMeta := getObjectMeta(obj)
finalizers := sets.NewString(objectMeta.GetFinalizers()...)
finalizers.Insert(FinalizerName)
objectMeta.SetFinalizers(finalizers.List())
err := cl.Update(ctx, obj)
if errors.IsNotFound(err) {
// Object was deleted manually before we could add the finalizer to it. This is not an error.
return nil
} else if err != nil {
return pkgerrors.Wrapf(err, "Could not add finalizer to %s/%s", objectMeta.GetNamespace(), objectMeta.GetName())
}
return nil
}
func getObjectMeta(obj runtime.Object) meta.Object {
oma, ok := obj.(meta.ObjectMetaAccessor)
if !ok {
panic("object does not implement ObjectMetaAccessor")
}
return oma.GetObjectMeta()
}