mirror of
https://gitea.com/Lydanne/buildx.git
synced 2025-11-04 10:03:42 +08:00
129 lines
3.6 KiB
Go
129 lines
3.6 KiB
Go
/*
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Copyright 2018 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 managedfields
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/kube-openapi/pkg/schemaconv"
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"k8s.io/kube-openapi/pkg/util/proto"
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smdschema "sigs.k8s.io/structured-merge-diff/v4/schema"
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"sigs.k8s.io/structured-merge-diff/v4/typed"
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)
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// groupVersionKindExtensionKey is the key used to lookup the
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// GroupVersionKind value for an object definition from the
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// definition's "extensions" map.
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const groupVersionKindExtensionKey = "x-kubernetes-group-version-kind"
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// GvkParser contains a Parser that allows introspecting the schema.
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type GvkParser struct {
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gvks map[schema.GroupVersionKind]string
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parser typed.Parser
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}
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// Type returns a helper which can produce objects of the given type. Any
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// errors are deferred until a further function is called.
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func (p *GvkParser) Type(gvk schema.GroupVersionKind) *typed.ParseableType {
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typeName, ok := p.gvks[gvk]
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if !ok {
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return nil
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}
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t := p.parser.Type(typeName)
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return &t
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}
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// NewGVKParser builds a GVKParser from a proto.Models. This
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// will automatically find the proper version of the object, and the
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// corresponding schema information.
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func NewGVKParser(models proto.Models, preserveUnknownFields bool) (*GvkParser, error) {
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typeSchema, err := schemaconv.ToSchemaWithPreserveUnknownFields(models, preserveUnknownFields)
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if err != nil {
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return nil, fmt.Errorf("failed to convert models to schema: %v", err)
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}
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parser := GvkParser{
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gvks: map[schema.GroupVersionKind]string{},
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}
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parser.parser = typed.Parser{Schema: smdschema.Schema{Types: typeSchema.Types}}
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for _, modelName := range models.ListModels() {
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model := models.LookupModel(modelName)
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if model == nil {
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panic(fmt.Sprintf("ListModels returns a model that can't be looked-up for: %v", modelName))
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}
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gvkList := parseGroupVersionKind(model)
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for _, gvk := range gvkList {
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if len(gvk.Kind) > 0 {
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_, ok := parser.gvks[gvk]
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if ok {
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return nil, fmt.Errorf("duplicate entry for %v", gvk)
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}
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parser.gvks[gvk] = modelName
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}
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}
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}
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return &parser, nil
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}
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// Get and parse GroupVersionKind from the extension. Returns empty if it doesn't have one.
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func parseGroupVersionKind(s proto.Schema) []schema.GroupVersionKind {
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extensions := s.GetExtensions()
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gvkListResult := []schema.GroupVersionKind{}
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// Get the extensions
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gvkExtension, ok := extensions[groupVersionKindExtensionKey]
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if !ok {
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return []schema.GroupVersionKind{}
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}
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// gvk extension must be a list of at least 1 element.
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gvkList, ok := gvkExtension.([]interface{})
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if !ok {
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return []schema.GroupVersionKind{}
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}
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for _, gvk := range gvkList {
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// gvk extension list must be a map with group, version, and
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// kind fields
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gvkMap, ok := gvk.(map[interface{}]interface{})
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if !ok {
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continue
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}
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group, ok := gvkMap["group"].(string)
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if !ok {
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continue
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}
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version, ok := gvkMap["version"].(string)
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if !ok {
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continue
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}
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kind, ok := gvkMap["kind"].(string)
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if !ok {
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continue
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}
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gvkListResult = append(gvkListResult, schema.GroupVersionKind{
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Group: group,
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Version: version,
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Kind: kind,
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})
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}
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return gvkListResult
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}
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