Use JSON logger with ISO8601 time encoder for controller manager (#525)

* Use JSON logger with ISO8601 time encoder for controller manager

go.mod

@@ -11,6 +11,7 @@ require (
 	github.com/golang/mock v1.6.0
 	github.com/onsi/ginkgo/v2 v2.1.4
 	github.com/onsi/gomega v1.20.0
+	go.uber.org/zap v1.21.0
 	k8s.io/api v0.25.0
 	k8s.io/apimachinery v0.25.0
 	k8s.io/client-go v11.0.1-0.20190409021438-1a26190bd76a+incompatible
@@ -99,7 +100,6 @@ require (
 	go.opencensus.io v0.23.0 // indirect
 	go.uber.org/atomic v1.7.0 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
-	go.uber.org/zap v1.21.0 // indirect
 	golang.org/x/crypto v0.0.0-20220516162934-403b01795ae8 // indirect
 	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
 	golang.org/x/net v0.0.0-20220722155237-a158d28d115b // indirect

main.go

@@ -17,6 +17,7 @@ package main
 
 import (
 	"flag"
+	"go.uber.org/zap/zapcore"
 	"os"
 	"time"
 
@@ -86,7 +87,7 @@ func main() {
 
 	flag.Parse()
 
-	ctrl.SetLogger(zap.New(zap.UseDevMode(true)))
+	ctrl.SetLogger(zap.New(buildDefaultLoggerOpts()...))
 
 	ctx := ctrl.SetupSignalHandler()
 
@@ -174,3 +175,13 @@ func main() {
 		os.Exit(1)
 	}
 }
+
+func buildDefaultLoggerOpts() []zap.Opts {
+	var opts []zap.Opts
+	opts = append(opts, zap.UseDevMode(false))
+	opts = append(opts, zap.JSONEncoder(func(encoderConfig *zapcore.EncoderConfig) {
+		encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
+		encoderConfig.EncodeDuration = zapcore.StringDurationEncoder
+	}))
+	return opts
+}