Merge pull request #250 from external-secrets/feature/add-loglevel

feat: allow setting loglevel

go.mod

@@ -64,6 +64,7 @@ require (
 	github.com/stretchr/testify v1.7.0
 	github.com/tidwall/gjson v1.7.5
 	github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a
+	go.uber.org/zap v1.17.0
 	golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83
 	golang.org/x/exp v0.0.0-20200331195152-e8c3332aa8e5 // indirect
 	golang.org/x/oauth2 v0.0.0-20210201163806-010130855d6c

main.go

@@ -18,6 +18,7 @@ import (
 	"flag"
 	"os"
 
+	"go.uber.org/zap/zapcore"
 	"k8s.io/apimachinery/pkg/runtime"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
@@ -43,14 +44,23 @@ func main() {
 	var metricsAddr string
 	var controllerClass string
 	var enableLeaderElection bool
+	var loglevel string
 	flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
 	flag.StringVar(&controllerClass, "controller-class", "default", "the controller is instantiated with a specific controller name and filters ES based on this property")
 	flag.BoolVar(&enableLeaderElection, "enable-leader-election", false,
 		"Enable leader election for controller manager. "+
 			"Enabling this will ensure there is only one active controller manager.")
+	flag.StringVar(&loglevel, "loglevel", "info", "loglevel to use, one of: debug, info, warn, error, dpanic, panic, fatal")
 	flag.Parse()
 
-	ctrl.SetLogger(zap.New(zap.UseDevMode(true)))
+	var lvl zapcore.Level
+	err := lvl.UnmarshalText([]byte(loglevel))
+	if err != nil {
+		setupLog.Error(err, "error unmarshaling loglevel")
+		os.Exit(1)
+	}
+	logger := zap.New(zap.Level(lvl))
+	ctrl.SetLogger(logger)
 
 	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
 		Scheme:             scheme,