mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-17 19:14:04 -08:00
82 lines
2.8 KiB
Go
82 lines
2.8 KiB
Go
/*
|
|
Copyright 2016 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 discovery
|
|
|
|
import (
|
|
"reflect"
|
|
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
)
|
|
|
|
// UnstructuredObjectTyper provides a runtime.ObjectTyper implementation for
|
|
// runtime.Unstructured object based on discovery information.
|
|
type UnstructuredObjectTyper struct {
|
|
typers []runtime.ObjectTyper
|
|
}
|
|
|
|
// NewUnstructuredObjectTyper returns a runtime.ObjectTyper for
|
|
// unstructured objects based on discovery information. It accepts a list of fallback typers
|
|
// for handling objects that are not runtime.Unstructured. It does not delegate the Recognizes
|
|
// check, only ObjectKinds.
|
|
// TODO this only works for the apiextensions server and doesn't recognize any types. Move to point of use.
|
|
func NewUnstructuredObjectTyper(typers ...runtime.ObjectTyper) *UnstructuredObjectTyper {
|
|
dot := &UnstructuredObjectTyper{
|
|
typers: typers,
|
|
}
|
|
return dot
|
|
}
|
|
|
|
// ObjectKinds returns a slice of one element with the group,version,kind of the
|
|
// provided object, or an error if the object is not runtime.Unstructured or
|
|
// has no group,version,kind information. unversionedType will always be false
|
|
// because runtime.Unstructured object should always have group,version,kind
|
|
// information set.
|
|
func (d *UnstructuredObjectTyper) ObjectKinds(obj runtime.Object) (gvks []schema.GroupVersionKind, unversionedType bool, err error) {
|
|
if _, ok := obj.(runtime.Unstructured); ok {
|
|
gvk := obj.GetObjectKind().GroupVersionKind()
|
|
if len(gvk.Kind) == 0 {
|
|
return nil, false, runtime.NewMissingKindErr("object has no kind field ")
|
|
}
|
|
if len(gvk.Version) == 0 {
|
|
return nil, false, runtime.NewMissingVersionErr("object has no apiVersion field")
|
|
}
|
|
return []schema.GroupVersionKind{gvk}, false, nil
|
|
}
|
|
var lastErr error
|
|
for _, typer := range d.typers {
|
|
gvks, unversioned, err := typer.ObjectKinds(obj)
|
|
if err != nil {
|
|
lastErr = err
|
|
continue
|
|
}
|
|
return gvks, unversioned, nil
|
|
}
|
|
if lastErr == nil {
|
|
lastErr = runtime.NewNotRegisteredErrForType(reflect.TypeOf(obj))
|
|
}
|
|
return nil, false, lastErr
|
|
}
|
|
|
|
// Recognizes returns true if the provided group,version,kind was in the
|
|
// discovery information.
|
|
func (d *UnstructuredObjectTyper) Recognizes(gvk schema.GroupVersionKind) bool {
|
|
return false
|
|
}
|
|
|
|
var _ runtime.ObjectTyper = &UnstructuredObjectTyper{}
|