48 lines
1.5 KiB
Go
48 lines
1.5 KiB
Go
/*
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Copyright the Velero contributors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kube
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import (
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"reflect"
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"sigs.k8s.io/controller-runtime/pkg/event"
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"sigs.k8s.io/controller-runtime/pkg/predicate"
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)
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// SpecChangePredicate implements a default update predicate function on Spec change
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// As Velero doesn't enable subresource in CRDs, we cannot use the object's metadata.generation field to check the spec change
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// More details about the generation field refer to https://github.com/kubernetes-sigs/controller-runtime/blob/v0.12.2/pkg/predicate/predicate.go#L156
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type SpecChangePredicate struct {
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predicate.Funcs
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}
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func (SpecChangePredicate) Update(e event.UpdateEvent) bool {
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if e.ObjectOld == nil {
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return false
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}
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if e.ObjectNew == nil {
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return false
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}
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oldSpec := reflect.ValueOf(e.ObjectOld).Elem().FieldByName("Spec")
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// contains no field named "Spec", return false directly
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if oldSpec.IsZero() {
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return false
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}
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newSpec := reflect.ValueOf(e.ObjectNew).Elem().FieldByName("Spec")
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return !reflect.DeepEqual(oldSpec.Interface(), newSpec.Interface())
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}
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