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main.go
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main.go
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/*
* Copyright 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
*
* 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 main
import (
"fmt"
"os"
"k8s.io/apimachinery/pkg/runtime"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"github.com/gardener/controller-manager-library/pkg/controllermanager/examples/apis/example"
"github.com/gardener/controller-manager-library/pkg/resources"
)
var scheme *runtime.Scheme
var decoder *resources.Decoder
func init() {
scheme = runtime.NewScheme()
utilruntime.Must(example.AddToScheme(scheme))
decoder = resources.NewDecoder(scheme)
}
var manifest = `
apiVersion: example.examples.gardener.cloud/v1alpha1
kind: Example
metadata:
annotations:
a.b: o
name: my.example
namespace: default
spec:
hostname: myhost
path: a/b
scheme: http
`
func main() {
o, gvk, err := decoder.Decode([]byte(manifest))
if err != nil {
fmt.Printf("err: %s\n", err)
os.Exit(1)
}
fmt.Printf("GVK: %s, type: %T\n", gvk, o)
into := &example.Example{}
err = scheme.Convert(o, into, nil)
if err != nil {
fmt.Printf("convert err: %s\n", err)
os.Exit(1)
}
fmt.Printf("url: %s\n", into.Spec.URL)
into = &example.Example{}
//beta:=&v1beta1.Example{}
err = decoder.DecodeInto([]byte(manifest), into)
if err != nil {
fmt.Printf("err: %s\n", err)
os.Exit(1)
}
fmt.Printf("url: %s\n", into.Spec.URL)
vers := &resources.VersionedObjects{}
err = decoder.DecodeInto([]byte(manifest), vers)
if err != nil {
fmt.Printf("vers err: %s\n", err)
os.Exit(1)
}
fmt.Printf("len %d: wire: %T, final: %T: %s\n", len(vers.Objects), vers.First(), vers.Last(), vers.Last().(*example.Example).Spec.URL)
}