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package main
import (
"flag"
"log"
"os"
"path/filepath"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
"onap.local/sslendpoints/ports"
)
func main() {
var kubeconfig *string
if home := os.Getenv("HOME"); 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 {
log.Panicf("Unable to build cluster config: %v", err)
}
// create the clientset
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
log.Panicf("Unable to build client: %v", err)
}
// get list of services to extract nodeport information
services, err := clientset.CoreV1().Services("").List(metav1.ListOptions{})
if err != nil {
log.Panicf("Unable to get list of services: %v", err)
}
// filter out nodeports with corresponding services from service list
nodeports, ok := ports.FilterNodePorts(services)
if !ok {
log.Println("There are no NodePorts in the cluster")
os.Exit(0)
}
log.Printf("There are %d NodePorts in the cluster\n", len(nodeports))
os.Exit(len(nodeports))
}
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