Merge pull request #30 from spowelljr/increaseUpdateCheck

Check for updates every 12 hours

Author: spowelljr

server.go

@@ -21,6 +21,7 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"time"
 
 	"github.com/blang/semver/v4"
 	admissionv1 "k8s.io/api/admission/v1"
@@ -311,7 +312,7 @@ func needsEnvVar(c corev1.Container, name string) bool {
 	return true
 }
 
-func updateCheck() error {
+func updateCheck() {
 	type release struct {
 		Name string `json:"name"`
 	}
@@ -320,39 +321,42 @@ func updateCheck() error {
 
 	resp, err := http.Get("https://storage.googleapis.com/minikube-gcp-auth/releases.json")
 	if err != nil {
-		return fmt.Errorf("failed to get releases file: %v", err)
+		log.Printf("failed to get releases file: %v", err)
 	}
 	defer resp.Body.Close()
 	if err := json.NewDecoder(resp.Body).Decode(&releases); err != nil {
-		return fmt.Errorf("failed to decode releases file: %v", err)
+		log.Printf("failed to decode releases file: %v", err)
 	}
 	if len(releases) == 0 {
-		return fmt.Errorf("no releases found in releases file")
+		log.Print("no releases found in releases file")
 	}
 
 	currVersion, err := semver.ParseTolerant(Version)
 	if err != nil {
-		return fmt.Errorf("unable to parse current version: %v", err)
+		log.Printf("unable to parse current version: %v", err)
 	}
 	name := releases[0].Name
 	latestVersion, err := semver.ParseTolerant(name)
 	if err != nil {
-		return fmt.Errorf("unable to parse latest version: %v", err)
+		log.Printf("unable to parse latest version: %v", err)
 	}
 
 	if currVersion.LT(latestVersion) {
 		log.Printf("gcp-auth-webhook %s is available!", name)
 	}
+}
 
-	return nil
+func updateTicker() {
+	updateCheck()
+	for range time.Tick(12 * time.Hour) {
+		updateCheck()
+	}
 }
 
 func main() {
 	log.Print("GCP Auth Webhook started!")
 
-	if err := updateCheck(); err != nil {
-		log.Println(err)
-	}
+	go updateTicker()
 
 	mux := http.NewServeMux()