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Do not modify the informer cache objects in resource.AnnotationChangedPredicate.Update #561

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merged 1 commit into from
Sep 25, 2023
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Do not modify the informer cache objects in resource.AnnotationChangedPredicate.Update #561

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12 changes: 10 additions & 2 deletions pkg/resource/predicates.go
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Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,14 @@ type AnnotationChangedPredicate struct {
ignored []string
}

func copyAnnotations(an map[string]string) map[string]string {
r := make(map[string]string, len(an))
for k, v := range an {
r[k] = v
}
return r
}

// Update implements default UpdateEvent filter for validating annotation change.
func (a AnnotationChangedPredicate) Update(e event.UpdateEvent) bool {
if e.ObjectOld == nil {
Expand All @@ -86,8 +94,8 @@ func (a AnnotationChangedPredicate) Update(e event.UpdateEvent) bool {
return false
}

na := e.ObjectNew.GetAnnotations()
oa := e.ObjectOld.GetAnnotations()
na := copyAnnotations(e.ObjectNew.GetAnnotations())
oa := copyAnnotations(e.ObjectOld.GetAnnotations())

for _, k := range a.ignored {
delete(na, k)
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