mirror of https://github.com/k3s-io/k3s
92 lines
2.6 KiB
Go
92 lines
2.6 KiB
Go
/*
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Copyright 2019 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 defaulting
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import (
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"fmt"
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"reflect"
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structuralschema "k8s.io/apiextensions-apiserver/pkg/apiserver/schema"
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structuralobjectmeta "k8s.io/apiextensions-apiserver/pkg/apiserver/schema/objectmeta"
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"k8s.io/apiextensions-apiserver/pkg/apiserver/schema/pruning"
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"k8s.io/apimachinery/pkg/runtime"
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)
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// PruneDefaults prunes default values according to the schema and according to
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// the ObjectMeta definition of the running server. It mutates the passed schema.
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func PruneDefaults(s *structuralschema.Structural) error {
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p := pruner{s}
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_, err := p.pruneDefaults(s, NewRootObjectFunc())
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return err
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}
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type pruner struct {
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rootSchema *structuralschema.Structural
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}
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func (p *pruner) pruneDefaults(s *structuralschema.Structural, f SurroundingObjectFunc) (changed bool, err error) {
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if s == nil {
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return false, nil
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}
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if s.Default.Object != nil {
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orig := runtime.DeepCopyJSONValue(s.Default.Object)
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obj, acc, err := f(s.Default.Object)
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if err != nil {
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return false, fmt.Errorf("failed to prune default value: %v", err)
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}
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if err := structuralobjectmeta.Coerce(nil, obj, p.rootSchema, true, true); err != nil {
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return false, fmt.Errorf("failed to prune default value: %v", err)
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}
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pruning.Prune(obj, p.rootSchema, true)
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s.Default.Object, _, err = acc(obj)
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if err != nil {
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return false, fmt.Errorf("failed to prune default value: %v", err)
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}
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changed = changed || !reflect.DeepEqual(orig, s.Default.Object)
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}
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if s.AdditionalProperties != nil && s.AdditionalProperties.Structural != nil {
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c, err := p.pruneDefaults(s.AdditionalProperties.Structural, f.Child("*"))
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if err != nil {
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return false, err
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}
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changed = changed || c
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}
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if s.Items != nil {
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c, err := p.pruneDefaults(s.Items, f.Index())
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if err != nil {
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return false, err
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}
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changed = changed || c
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}
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for k, subSchema := range s.Properties {
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c, err := p.pruneDefaults(&subSchema, f.Child(k))
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if err != nil {
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return false, err
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}
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if c {
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s.Properties[k] = subSchema
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changed = true
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}
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}
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return changed, nil
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}
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