84 lines
2.7 KiB
Go
84 lines
2.7 KiB
Go
/*
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Copyright 2021 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 openapi
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import (
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"strings"
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genericfeatures "k8s.io/apiserver/pkg/features"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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"k8s.io/kube-openapi/pkg/common"
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"k8s.io/kube-openapi/pkg/schemamutation"
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"k8s.io/kube-openapi/pkg/validation/spec"
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)
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// enumTypeDescriptionHeader is the header of enum section in schema description.
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const enumTypeDescriptionHeader = "Possible enum values:"
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// GetOpenAPIDefinitionsWithoutDisabledFeatures wraps a GetOpenAPIDefinitions to revert
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// any change to the schema that was made by disabled features.
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func GetOpenAPIDefinitionsWithoutDisabledFeatures(GetOpenAPIDefinitions common.GetOpenAPIDefinitions) common.GetOpenAPIDefinitions {
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return func(ref common.ReferenceCallback) map[string]common.OpenAPIDefinition {
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defs := GetOpenAPIDefinitions(ref)
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restoreDefinitions(defs)
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return defs
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}
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}
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// restoreDefinitions restores any changes by disabled features from definition map.
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func restoreDefinitions(defs map[string]common.OpenAPIDefinition) {
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// revert changes from OpenAPIEnums
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if !utilfeature.DefaultFeatureGate.Enabled(genericfeatures.OpenAPIEnums) {
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for gvk, def := range defs {
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orig := &def.Schema
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if ret := pruneEnums(orig); ret != orig {
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def.Schema = *ret
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defs[gvk] = def
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}
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}
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}
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}
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func pruneEnums(schema *spec.Schema) *spec.Schema {
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walker := schemamutation.Walker{
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SchemaCallback: func(schema *spec.Schema) *spec.Schema {
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orig := schema
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clone := func() {
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if orig == schema { // if schema has not been mutated yet
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schema = new(spec.Schema)
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*schema = *orig // make a clone from orig to schema
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}
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}
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if headerIndex := strings.Index(schema.Description, enumTypeDescriptionHeader); headerIndex != -1 {
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// remove the enum section from description.
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// note that the new lines before the header should be removed too,
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// thus the slice range.
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clone()
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schema.Description = schema.Description[:headerIndex]
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}
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if len(schema.Enum) != 0 {
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// remove the enum field
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clone()
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schema.Enum = nil
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}
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return schema
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},
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RefCallback: schemamutation.RefCallbackNoop,
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}
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return walker.WalkSchema(schema)
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}
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