mirror of
https://github.com/k3s-io/k3s.git
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52 lines
2.2 KiB
Go
52 lines
2.2 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 apiserver
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import (
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"fmt"
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apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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var swaggerMetadataDescriptions = metav1.ObjectMeta{}.SwaggerDoc()
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// getColumnsForVersion returns the columns for given version or nil.
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// NOTE: the newly logically-defaulted columns is not pointing to the original CRD object.
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// One cannot mutate the original CRD columns using the logically-defaulted columns. Please iterate through
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// the original CRD object instead.
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func getColumnsForVersion(crd *apiextensionsv1.CustomResourceDefinition, version string) ([]apiextensionsv1.CustomResourceColumnDefinition, error) {
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for _, v := range crd.Spec.Versions {
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if version == v.Name {
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return serveDefaultColumnsIfEmpty(v.AdditionalPrinterColumns), nil
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}
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}
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return nil, fmt.Errorf("version %s not found in apiextensionsv1.CustomResourceDefinition: %v", version, crd.Name)
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}
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// serveDefaultColumnsIfEmpty applies logically defaulting to columns, if the input columns is empty.
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// NOTE: in this way, the newly logically-defaulted columns is not pointing to the original CRD object.
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// One cannot mutate the original CRD columns using the logically-defaulted columns. Please iterate through
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// the original CRD object instead.
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func serveDefaultColumnsIfEmpty(columns []apiextensionsv1.CustomResourceColumnDefinition) []apiextensionsv1.CustomResourceColumnDefinition {
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if len(columns) > 0 {
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return columns
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}
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return []apiextensionsv1.CustomResourceColumnDefinition{
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{Name: "Age", Type: "date", Description: swaggerMetadataDescriptions["creationTimestamp"], JSONPath: ".metadata.creationTimestamp"},
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}
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}
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