setup logging as modern kubebuilder does it with zap

cmd/manager/main.go

@@ -17,22 +17,21 @@ limitations under the License.
 package main
 
 import (
-	goflag "flag"
+	"flag"
 	"fmt"
 	"os"
 	"runtime"
 	"time"
 
 	"sigs.k8s.io/controller-runtime/pkg/cache"
 
-	"github.com/go-logr/glogr"
-	flag "github.com/spf13/pflag"
 	"github.com/wave-k8s/wave/pkg/apis"
 	"github.com/wave-k8s/wave/pkg/controller"
 	"github.com/wave-k8s/wave/pkg/webhook"
 	_ "k8s.io/client-go/plugin/pkg/client/auth"
+	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client/config"
-	logf "sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 	"sigs.k8s.io/controller-runtime/pkg/manager"
 	"sigs.k8s.io/controller-runtime/pkg/manager/signals"
 )
@@ -43,36 +42,33 @@ var (
 	leaderElectionNamespace = flag.String("leader-election-namespace", "", "Namespace for the configmap used by the leader election system")
 	syncPeriod              = flag.Duration("sync-period", 5*time.Minute, "Reconcile sync period")
 	showVersion             = flag.Bool("version", false, "Show version and exit")
+	setupLog                = ctrl.Log.WithName("setup")
 )
 
 func main() {
-	// Setup flags
-	err := goflag.Lookup("logtostderr").Value.Set("true")
-	if err != nil {
-		fmt.Printf("unable to set logtostderr %v", err)
-		os.Exit(1)
+	opts := zap.Options{
+		Development: true,
 	}
-	flag.CommandLine.AddGoFlagSet(goflag.CommandLine)
+	opts.BindFlags(flag.CommandLine)
 	flag.Parse()
 
+	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
+
 	if *showVersion {
 		fmt.Printf("wave %s (built with %s)\n", VERSION, runtime.Version())
 		return
 	}
 
-	logf.SetLogger(glogr.New())
-	log := logf.Log.WithName("entrypoint")
-
 	// Get a config to talk to the apiserver
-	log.Info("setting up client for manager")
+	setupLog.Info("setting up client for manager")
 	cfg, err := config.GetConfig()
 	if err != nil {
-		log.Error(err, "unable to set up client config")
+		setupLog.Error(err, "unable to set up client config")
 		os.Exit(1)
 	}
 
 	// Create a new Cmd to provide shared dependencies and start components
-	log.Info("setting up manager")
+	setupLog.Info("setting up manager")
 	mgr, err := manager.New(cfg, manager.Options{
 		LeaderElection:          *leaderElection,
 		LeaderElectionID:        *leaderElectionID,
@@ -82,36 +78,36 @@ func main() {
 		},
 	})
 	if err != nil {
-		log.Error(err, "unable to set up overall controller manager")
+		setupLog.Error(err, "unable to set up overall controller manager")
 		os.Exit(1)
 	}
 
-	log.Info("Registering Components.")
+	setupLog.Info("Registering Components.")
 
 	// Setup Scheme for all resources
-	log.Info("setting up scheme")
+	setupLog.Info("setting up scheme")
 	if err := apis.AddToScheme(mgr.GetScheme()); err != nil {
-		log.Error(err, "unable add APIs to scheme")
+		setupLog.Error(err, "unable add APIs to scheme")
 		os.Exit(1)
 	}
 
 	// Setup all Controllers
-	log.Info("Setting up controller")
+	setupLog.Info("Setting up controller")
 	if err := controller.AddToManager(mgr); err != nil {
-		log.Error(err, "unable to register controllers to the manager")
+		setupLog.Error(err, "unable to register controllers to the manager")
 		os.Exit(1)
 	}
 
-	log.Info("setting up webhooks")
+	setupLog.Info("setting up webhooks")
 	if err := webhook.AddToManager(mgr); err != nil {
-		log.Error(err, "unable to register webhooks to the manager")
+		setupLog.Error(err, "unable to register webhooks to the manager")
 		os.Exit(1)
 	}
 
 	// Start the Cmd
-	log.Info("Starting the Cmd.")
+	setupLog.Info("Starting the Cmd.")
 	if err := mgr.Start(signals.SetupSignalHandler()); err != nil {
-		log.Error(err, "unable to run the manager")
+		setupLog.Error(err, "unable to run the manager")
 		os.Exit(1)
 	}
 }

go.mod

@@ -3,11 +3,9 @@ module github.com/wave-k8s/wave
 go 1.22.1
 
 require (
-	github.com/go-logr/glogr v1.2.2
 	github.com/onsi/ginkgo v1.12.1
 	github.com/onsi/gomega v1.32.0
 	github.com/prometheus/client_golang v1.19.0
-	github.com/spf13/pflag v1.0.5
 	k8s.io/api v0.29.0
 	k8s.io/apimachinery v0.29.0
 	k8s.io/client-go v0.29.0
@@ -23,11 +21,11 @@ require (
 	github.com/evanphx/json-patch/v5 v5.8.0 // indirect
 	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/go-logr/zapr v1.3.0 // indirect
 	github.com/go-openapi/jsonpointer v0.19.6 // indirect
 	github.com/go-openapi/jsonreference v0.20.2 // indirect
 	github.com/go-openapi/swag v0.22.3 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/glog v1.1.0 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/google/gnostic-models v0.6.8 // indirect
@@ -46,6 +44,9 @@ require (
 	github.com/prometheus/client_model v0.5.0 // indirect
 	github.com/prometheus/common v0.48.0 // indirect
 	github.com/prometheus/procfs v0.12.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.26.0 // indirect
 	golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
 	golang.org/x/mod v0.14.0 // indirect
 	golang.org/x/net v0.20.0 // indirect

go.sum

@@ -16,10 +16,7 @@ github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMo
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
 github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
-github.com/go-logr/glogr v1.2.2 h1:Jpc1ppf1yWnU+aRGFjIZeE2KfUnc1W4LV9XmndmP0QY=
-github.com/go-logr/glogr v1.2.2/go.mod h1:u/37V9lMYDEmbMcbNNpRKnAB5Nof5FgtxhteHXbD3xY=
 github.com/go-logr/logr v0.2.0/go.mod h1:z6/tIYblkpsD+a4lm/fGIIU9mZ+XfAiaFtq7xTgseGU=
-github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.3.0/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ=
 github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
@@ -35,9 +32,6 @@ github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572 h1:tfuBGBXKqDEe
 github.com/go-task/slim-sprig v0.0.0-20230315185526-52ccab3ef572/go.mod h1:9Pwr4B2jHnOSGXyyzV8ROjYa2ojvAY6HCGYYfMoC3Ls=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/glog v1.1.0 h1:/d3pCKDPWNnvIWe0vVUpNP32qc8U3PDVxySP/y360qE=
-github.com/golang/glog v1.1.0/go.mod h1:pfYeQZ3JWZoXTV5sFc986z3HTpwQs9At6P4ImfuP3NQ=
 github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
 github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=

pkg/controller/daemonset/daemonset_controller_suite_test.go

@@ -24,14 +24,14 @@ import (
 
 	"github.com/wave-k8s/wave/test/reporters"
 
-	"github.com/go-logr/glogr"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 	ctrl "sigs.k8s.io/controller-runtime"
 
 	"k8s.io/client-go/rest"
 	"sigs.k8s.io/controller-runtime/pkg/envtest"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 )
 
@@ -51,7 +51,7 @@ var _ = BeforeSuite(func() {
 		CRDDirectoryPaths: []string{filepath.Join("..", "..", "..", "config", "crds")},
 	}
 
-	logf.SetLogger(glogr.New())
+	logf.SetLogger(zap.New(zap.WriteTo(GinkgoWriter), zap.UseDevMode(true)))
 
 	var err error
 	if cfg, err = t.Start(); err != nil {

pkg/controller/deployment/deployment_controller_suite_test.go

@@ -24,7 +24,6 @@ import (
 
 	ctrl "sigs.k8s.io/controller-runtime"
 
-	"github.com/go-logr/glogr"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 	"github.com/wave-k8s/wave/pkg/apis"
@@ -33,6 +32,7 @@ import (
 	"k8s.io/client-go/rest"
 	"sigs.k8s.io/controller-runtime/pkg/envtest"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 )
 
@@ -53,7 +53,7 @@ var _ = BeforeSuite(func() {
 	}
 	apis.AddToScheme(scheme.Scheme)
 
-	logf.SetLogger(glogr.New())
+	logf.SetLogger(zap.New(zap.WriteTo(GinkgoWriter), zap.UseDevMode(true)))
 
 	var err error
 	if cfg, err = t.Start(); err != nil {

pkg/controller/statefulset/statefulset_controller_suite_test.go

@@ -24,7 +24,6 @@ import (
 
 	"github.com/wave-k8s/wave/test/reporters"
 
-	"github.com/go-logr/glogr"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 	ctrl "sigs.k8s.io/controller-runtime"
@@ -34,6 +33,7 @@ import (
 	"k8s.io/client-go/rest"
 	"sigs.k8s.io/controller-runtime/pkg/envtest"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 )
 
@@ -54,7 +54,7 @@ var _ = BeforeSuite(func() {
 	}
 	apis.AddToScheme(scheme.Scheme)
 
-	logf.SetLogger(glogr.New())
+	logf.SetLogger(zap.New(zap.WriteTo(GinkgoWriter), zap.UseDevMode(true)))
 
 	var err error
 	if cfg, err = t.Start(); err != nil {

pkg/core/wave_suite_test.go

@@ -23,7 +23,6 @@ import (
 	"sync"
 	"testing"
 
-	"github.com/go-logr/glogr"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 	"github.com/wave-k8s/wave/pkg/apis"
@@ -32,6 +31,7 @@ import (
 	"k8s.io/client-go/rest"
 	"sigs.k8s.io/controller-runtime/pkg/envtest"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
+	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 	"sigs.k8s.io/controller-runtime/pkg/manager"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 )
@@ -51,7 +51,7 @@ var _ = BeforeSuite(func() {
 	}
 	apis.AddToScheme(scheme.Scheme)
 
-	logf.SetLogger(glogr.New())
+	logf.SetLogger(zap.New(zap.WriteTo(GinkgoWriter), zap.UseDevMode(true)))
 
 	var err error
 	if cfg, err = t.Start(); err != nil {