13add66f1e
Some third-party resources could be part of more than one api group. Allow this to be the case when adding openapi models to openapi data.
128 lines
3.2 KiB
Go
128 lines
3.2 KiB
Go
/*
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Copyright 2017 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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openapi_v2 "github.com/googleapis/gnostic/OpenAPIv2"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/kube-openapi/pkg/util/proto"
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)
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// Resources interface describe a resources provider, that can give you
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// resource based on group-version-kind.
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type Resources interface {
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LookupResource(gvk schema.GroupVersionKind) proto.Schema
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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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// document is an implementation of `Resources`. It looks for
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// resources in an openapi Schema.
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type document struct {
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// Maps gvk to model name
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resources map[schema.GroupVersionKind]string
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models proto.Models
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}
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var _ Resources = &document{}
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func NewOpenAPIData(doc *openapi_v2.Document) (Resources, error) {
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models, err := proto.NewOpenAPIData(doc)
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if err != nil {
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return nil, err
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}
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resources := map[schema.GroupVersionKind]string{}
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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("ListModels returns a model that can't be looked-up.")
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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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resources[gvk] = modelName
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}
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}
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}
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return &document{
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resources: resources,
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models: models,
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}, nil
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}
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func (d *document) LookupResource(gvk schema.GroupVersionKind) proto.Schema {
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modelName, found := d.resources[gvk]
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if !found {
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return nil
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}
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return d.models.LookupModel(modelName)
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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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