mirror of https://github.com/k3s-io/k3s
67 lines
1.9 KiB
Go
67 lines
1.9 KiB
Go
/*
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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 defaulting
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import structuralschema "k8s.io/apiextensions-apiserver/pkg/apiserver/schema"
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func isNonNullableNonDefaultableNull(x interface{}, s *structuralschema.Structural) bool {
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return x == nil && s != nil && s.Generic.Nullable == false && s.Default.Object == nil
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}
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func getSchemaForField(field string, s *structuralschema.Structural) *structuralschema.Structural {
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if s == nil {
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return nil
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}
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schema, ok := s.Properties[field]
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if ok {
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return &schema
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}
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if s.AdditionalProperties != nil {
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return s.AdditionalProperties.Structural
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}
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return nil
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}
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// PruneNonNullableNullsWithoutDefaults removes non-nullable
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// non-defaultable null values from object.
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//
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// Non-nullable nulls that have a default are left alone here and will
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// be defaulted later.
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func PruneNonNullableNullsWithoutDefaults(x interface{}, s *structuralschema.Structural) {
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switch x := x.(type) {
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case map[string]interface{}:
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for k, v := range x {
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schema := getSchemaForField(k, s)
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if isNonNullableNonDefaultableNull(v, schema) {
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delete(x, k)
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} else {
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PruneNonNullableNullsWithoutDefaults(v, schema)
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}
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}
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case []interface{}:
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var schema *structuralschema.Structural
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if s != nil {
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schema = s.Items
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}
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for i := range x {
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PruneNonNullableNullsWithoutDefaults(x[i], schema)
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}
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default:
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// scalars, do nothing
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}
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}
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