create a golang k8(kubernetes) struct from yaml file

cert-manager.yaml

# gotten from; https://github.com/jetstack/cert-manager/releases/download/v1.3.3/cert-manager.yamlhttps://github.com/jetstack/cert-manager/releases/download/v1.3.3/cert-manager.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: cert-manager
    app.kubernetes.io/component: controller
    app.kubernetes.io/instance: cert-manager
    app.kubernetes.io/name: cert-manager
  name: cert-manager
  namespace: cert-manager
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/component: controller
      app.kubernetes.io/instance: cert-manager
      app.kubernetes.io/name: cert-manager
  template:
    metadata:
      annotations:
        prometheus.io/path: /metrics
        prometheus.io/port: "9402"
        prometheus.io/scrape: "true"
      labels:
        app: cert-manager
        app.kubernetes.io/component: controller
        app.kubernetes.io/instance: cert-manager
        app.kubernetes.io/name: cert-manager
    spec:
      containers:
      - args:
        - --v=2
        - --cluster-resource-namespace=$(POD_NAMESPACE)
        - --leader-election-namespace=kube-system
        env:
        - name: POD_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        image: quay.io/jetstack/cert-manager-controller:v1.3.3
        imagePullPolicy: IfNotPresent
        name: cert-manager
        ports:
        - containerPort: 9402
          protocol: TCP
        resources: {}
      serviceAccountName: cert-manager

creat_golang_k8_object_from_yaml.go

package main

import (
	"fmt"
	"os"

	"github.com/komuw/kama"
	appsv1 "k8s.io/api/apps/v1"
	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/util/yaml"
)

// wget -nc https://github.com/jetstack/cert-manager/releases/download/v1.3.3/cert-manager.yaml
func main() {
	f, err := os.Open("cert-manager.yaml")
	if err != nil {
		panic(err)
	}

	k8sStruct := &appsv1.Deployment{}
	buffSize := 9000_000
	err = yaml.NewYAMLOrJSONDecoder(f, buffSize).Decode(k8sStruct)
	if err != nil {
		panic(err)
	}

	fmt.Println("k8sStruct:")
	kama.Dirp(k8sStruct)
}