mirror of https://github.com/k3s-io/k3s
129 lines
3.3 KiB
Go
129 lines
3.3 KiB
Go
/*
|
|
Copyright 2017 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package openapi
|
|
|
|
import (
|
|
openapi_v2 "github.com/googleapis/gnostic/OpenAPIv2"
|
|
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/kube-openapi/pkg/util/proto"
|
|
)
|
|
|
|
// Resources interface describe a resources provider, that can give you
|
|
// resource based on group-version-kind.
|
|
type Resources interface {
|
|
LookupResource(gvk schema.GroupVersionKind) proto.Schema
|
|
}
|
|
|
|
// groupVersionKindExtensionKey is the key used to lookup the
|
|
// GroupVersionKind value for an object definition from the
|
|
// definition's "extensions" map.
|
|
const groupVersionKindExtensionKey = "x-kubernetes-group-version-kind"
|
|
|
|
// document is an implementation of `Resources`. It looks for
|
|
// resources in an openapi Schema.
|
|
type document struct {
|
|
// Maps gvk to model name
|
|
resources map[schema.GroupVersionKind]string
|
|
models proto.Models
|
|
}
|
|
|
|
var _ Resources = &document{}
|
|
|
|
// NewOpenAPIData creates a new `Resources` out of the openapi document
|
|
func NewOpenAPIData(doc *openapi_v2.Document) (Resources, error) {
|
|
models, err := proto.NewOpenAPIData(doc)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
resources := map[schema.GroupVersionKind]string{}
|
|
for _, modelName := range models.ListModels() {
|
|
model := models.LookupModel(modelName)
|
|
if model == nil {
|
|
panic("ListModels returns a model that can't be looked-up.")
|
|
}
|
|
gvkList := parseGroupVersionKind(model)
|
|
for _, gvk := range gvkList {
|
|
if len(gvk.Kind) > 0 {
|
|
resources[gvk] = modelName
|
|
}
|
|
}
|
|
}
|
|
|
|
return &document{
|
|
resources: resources,
|
|
models: models,
|
|
}, nil
|
|
}
|
|
|
|
func (d *document) LookupResource(gvk schema.GroupVersionKind) proto.Schema {
|
|
modelName, found := d.resources[gvk]
|
|
if !found {
|
|
return nil
|
|
}
|
|
return d.models.LookupModel(modelName)
|
|
}
|
|
|
|
// Get and parse GroupVersionKind from the extension. Returns empty if it doesn't have one.
|
|
func parseGroupVersionKind(s proto.Schema) []schema.GroupVersionKind {
|
|
extensions := s.GetExtensions()
|
|
|
|
gvkListResult := []schema.GroupVersionKind{}
|
|
|
|
// Get the extensions
|
|
gvkExtension, ok := extensions[groupVersionKindExtensionKey]
|
|
if !ok {
|
|
return []schema.GroupVersionKind{}
|
|
}
|
|
|
|
// gvk extension must be a list of at least 1 element.
|
|
gvkList, ok := gvkExtension.([]interface{})
|
|
if !ok {
|
|
return []schema.GroupVersionKind{}
|
|
}
|
|
|
|
for _, gvk := range gvkList {
|
|
// gvk extension list must be a map with group, version, and
|
|
// kind fields
|
|
gvkMap, ok := gvk.(map[interface{}]interface{})
|
|
if !ok {
|
|
continue
|
|
}
|
|
group, ok := gvkMap["group"].(string)
|
|
if !ok {
|
|
continue
|
|
}
|
|
version, ok := gvkMap["version"].(string)
|
|
if !ok {
|
|
continue
|
|
}
|
|
kind, ok := gvkMap["kind"].(string)
|
|
if !ok {
|
|
continue
|
|
}
|
|
|
|
gvkListResult = append(gvkListResult, schema.GroupVersionKind{
|
|
Group: group,
|
|
Version: version,
|
|
Kind: kind,
|
|
})
|
|
}
|
|
|
|
return gvkListResult
|
|
}
|