3eaacc01ae
- update k8s client_go - update k8s apiextensions-apiserver - update k8s controller-tools Signed-off-by: leonnicolas <leonloechner@gmx.de>
128 lines
3.5 KiB
Go
128 lines
3.5 KiB
Go
/*
|
|
Copyright 2018 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 managedfields
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/kube-openapi/pkg/schemaconv"
|
|
"k8s.io/kube-openapi/pkg/util/proto"
|
|
"sigs.k8s.io/structured-merge-diff/v4/typed"
|
|
)
|
|
|
|
// 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"
|
|
|
|
// GvkParser contains a Parser that allows introspecting the schema.
|
|
type GvkParser struct {
|
|
gvks map[schema.GroupVersionKind]string
|
|
parser typed.Parser
|
|
}
|
|
|
|
// Type returns a helper which can produce objects of the given type. Any
|
|
// errors are deferred until a further function is called.
|
|
func (p *GvkParser) Type(gvk schema.GroupVersionKind) *typed.ParseableType {
|
|
typeName, ok := p.gvks[gvk]
|
|
if !ok {
|
|
return nil
|
|
}
|
|
t := p.parser.Type(typeName)
|
|
return &t
|
|
}
|
|
|
|
// NewGVKParser builds a GVKParser from a proto.Models. This
|
|
// will automatically find the proper version of the object, and the
|
|
// corresponding schema information.
|
|
func NewGVKParser(models proto.Models, preserveUnknownFields bool) (*GvkParser, error) {
|
|
typeSchema, err := schemaconv.ToSchemaWithPreserveUnknownFields(models, preserveUnknownFields)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to convert models to schema: %v", err)
|
|
}
|
|
parser := GvkParser{
|
|
gvks: map[schema.GroupVersionKind]string{},
|
|
}
|
|
parser.parser = typed.Parser{Schema: *typeSchema}
|
|
for _, modelName := range models.ListModels() {
|
|
model := models.LookupModel(modelName)
|
|
if model == nil {
|
|
panic(fmt.Sprintf("ListModels returns a model that can't be looked-up for: %v", modelName))
|
|
}
|
|
gvkList := parseGroupVersionKind(model)
|
|
for _, gvk := range gvkList {
|
|
if len(gvk.Kind) > 0 {
|
|
_, ok := parser.gvks[gvk]
|
|
if ok {
|
|
return nil, fmt.Errorf("duplicate entry for %v", gvk)
|
|
}
|
|
parser.gvks[gvk] = modelName
|
|
}
|
|
}
|
|
}
|
|
return &parser, nil
|
|
}
|
|
|
|
// 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
|
|
}
|