Get ingress using tls from k8s

ingress.go

// Problem
// - we simply want to check ssl certs on ingress on kubernetes

package main

import (
	"flag"
	"fmt"
	"os"
	"path/filepath"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/client-go/kubernetes"
	"k8s.io/client-go/tools/clientcmd"
)

func main() {
	var kubeconfig *string
	if home := homeDir(); home != "" {
		kubeconfig = flag.String("kubeconfig", filepath.Join(home, ".kube", "config"), "(optional) absolute path to the kubeconfig file")
	} else {
		kubeconfig = flag.String("kubeconfig", "", "absolute path to the kubeconfig file")
	}
	flag.Parse()

	// use the current context in kubeconfig
	config, err := clientcmd.BuildConfigFromFlags("", *kubeconfig)
	if err != nil {
		panic(err.Error())
	}

	// create the clientset
	clientset, err := kubernetes.NewForConfig(config)
	if err != nil {
		panic(err.Error())
	}

	ingress, err := clientset.ExtensionsV1beta1().Ingresses("").List(metav1.ListOptions{})
	if err != nil {
		panic(err.Error())
	}

	// maybe there's a better way
	for _, s := range ingress.Items {
		// log.Println(reflect.TypeOf(host.Spec.TLS))
		for p := range s.Spec.TLS {
			// fmt.Println("Ingress:", s.Spec.TLS[p].Hosts)
			for _, h := range s.Spec.TLS[p].Hosts {
				fmt.Println(h)
			}
		}

	}

	// services, err := clientset.CoreV1().Services("").List(v1.ListOptions{})
	// if err != nil {
	// 	panic(err.Error())
	// }
	// fmt.Printf("There are %d pods in the cluster\n", len(services.Items))

	// for _, s := range services.Items {
	// 	for p, _ := range s.Spec.Ports {
	// 		fmt.Println("Port:", s.Spec.Ports[p].Port)
	// 		fmt.Println("NodePort:", s.Spec.Ports[p].NodePort)
	// 	}
	// }

}

func homeDir() string {
	if h := os.Getenv("HOME"); h != "" {
		return h
	}
	return os.Getenv("USERPROFILE") // windows
}