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server.go
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server.go
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package server
import (
"context"
"fmt"
"log"
// "log"
"net/http"
"sync"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
// "github.com/cmwylie19/media-controller/internal/log"
// "github.com/djwackey/gitea/log"
)
var wg sync.WaitGroup
// Server wraps the Kubernetes configuration
type Server struct {
// Logger TODO Structured logs
Config *kubernetes.Clientset
Label string
Port string
}
func (s *Server) Init() {
config, err := GetConfig()
if err != nil {
log.Fatal(err)
}
s.Config = config
}
func GetConfig() (*kubernetes.Clientset, error) {
// creates the in-cluster config
config, err := rest.InClusterConfig()
if err != nil {
// panic(err.Error())
fmt.Println("Error getting config")
return &kubernetes.Clientset{}, err
}
// creates the clientset
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
// panic(err.Error())
fmt.Println("Error getting clientset")
return &kubernetes.Clientset{}, err
}
return clientset, nil
}
func (s *Server) Serve(tlsKey, tlsCert, port, label string) error {
// Update Server struct
s.Port = port
s.Label = label
http.HandleFunc("/health", GetHealth)
http.HandleFunc("/secrets", s.GetSecrets)
if tlsKey != "" && tlsCert != "" {
err := http.ListenAndServeTLS(":"+port, tlsCert, tlsKey, nil)
if err != nil {
log.Fatal("ListenAndServe: ", err)
return err
}
} else {
err := http.ListenAndServe(":"+port, nil)
if err != nil {
log.Fatal("ListenAndServe: ", err)
return err
}
}
return nil
}
func getSecrets(secrets_chan chan string, clientset *kubernetes.Clientset, ns string, label string) {
str_secrets := ""
defer wg.Done()
secrets, err := clientset.CoreV1().Secrets(ns).List(context.TODO(), metav1.ListOptions{
LabelSelector: label,
})
if err != nil {
panic(err.Error())
}
fmt.Printf("There are %d secrets in the cluster", len(secrets.Items))
for _, secret := range secrets.Items {
str_secrets += secret.Name + "\n"
fmt.Printf("Secret: %s\n", secret.Name)
}
secrets_chan <- str_secrets
}
func (s *Server) GetSecrets(w http.ResponseWriter, req *http.Request) {
ns := req.URL.Query().Get("namespace")
fmt.Println("Namespace: ", ns)
secrets := make(chan string)
wg.Add(1)
go getSecrets(secrets, s.Config, ns, s.Label)
cluster_secrets := <-secrets
wg.Wait()
w.Write([]byte(cluster_secrets))
}
func GetHealth(w http.ResponseWriter, req *http.Request) {
w.Write([]byte("OK"))
}