mirror of
https://github.com/ceph/ceph-csi.git
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59 lines
2.3 KiB
Go
59 lines
2.3 KiB
Go
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/*
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Copyright 2020 The Kubernetes Authors.
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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 autoscaling
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// DropRoundTripHorizontalPodAutoscalerAnnotations removes any annotations used to serialize round-tripped fields from later API versions,
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// and returns false if no changes were made and the original input object was returned.
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// It should always be called when converting internal -> external versions, prior
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// to setting any of the custom annotations:
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//
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// annotations, copiedAnnotations := DropRoundTripHorizontalPodAutoscalerAnnotations(externalObj.Annotations)
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// externalObj.Annotations = annotations
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//
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// if internal.SomeField != nil {
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// if !copiedAnnotations {
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// externalObj.Annotations = DeepCopyStringMap(externalObj.Annotations)
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// copiedAnnotations = true
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// }
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// externalObj.Annotations[...] = json.Marshal(...)
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// }
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func DropRoundTripHorizontalPodAutoscalerAnnotations(in map[string]string) (out map[string]string, copied bool) {
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_, hasMetricsSpecs := in[MetricSpecsAnnotation]
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_, hasBehaviorSpecs := in[BehaviorSpecsAnnotation]
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_, hasMetricsStatuses := in[MetricStatusesAnnotation]
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_, hasConditions := in[HorizontalPodAutoscalerConditionsAnnotation]
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if hasMetricsSpecs || hasBehaviorSpecs || hasMetricsStatuses || hasConditions {
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out = DeepCopyStringMap(in)
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delete(out, MetricSpecsAnnotation)
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delete(out, BehaviorSpecsAnnotation)
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delete(out, MetricStatusesAnnotation)
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delete(out, HorizontalPodAutoscalerConditionsAnnotation)
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return out, true
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}
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return in, false
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}
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// DeepCopyStringMap returns a copy of the input map.
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// If input is nil, an empty map is returned.
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func DeepCopyStringMap(in map[string]string) map[string]string {
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out := make(map[string]string, len(in))
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for k, v := range in {
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out[k] = v
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}
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return out
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}
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