Use ISO8601 format for time encoding in logging

Uses the ISO8601 format for encoding of log timestamps for a more
human-readable output.

Signed-off-by: Christoph Stäbler <cstabler@redhat.com>

go.mod

@@ -22,6 +22,7 @@ require (
 	github.com/spf13/pflag v1.0.5
 	github.com/tidwall/gjson v1.8.0
 	github.com/tidwall/sjson v1.1.7
+	go.uber.org/zap v1.17.0
 	gopkg.in/yaml.v2 v2.4.0
 	k8s.io/api v0.21.1
 	k8s.io/apimachinery v0.21.1

main.go

@@ -24,6 +24,7 @@ import (
 	"os"
 	"time"
 
+	"go.uber.org/zap/zapcore"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/labels"
@@ -88,8 +89,7 @@ func main() {
 		flag.CommandLine.Set("zap-devel", "true")
 	}
 
-	logger := zap.New(zap.UseFlagOptions(&opt))
-	ctrl.SetLogger(logger)
+	setupLogger(opt)
 
 	// Lock only for handler, we can run old and new version of
 	// webhook without problems, policy status will be updated
@@ -264,6 +264,15 @@ func main() {
 	}
 }
 
+func setupLogger(opts zap.Options) {
+	opts.EncoderConfigOptions = append(opts.EncoderConfigOptions, func(ec *zapcore.EncoderConfig) {
+		ec.EncodeTime = zapcore.ISO8601TimeEncoder
+	})
+
+	logger := zap.New(zap.UseFlagOptions(&opts))
+	ctrl.SetLogger(logger)
+}
+
 // Start profiler on given port if ENABLE_PROFILER is True
 func setProfiler() {
 	cfg := ProfilerConfig{}

vendor/modules.txt

@@ -643,6 +643,7 @@ go.uber.org/atomic
 # go.uber.org/multierr v1.6.0
 go.uber.org/multierr
 # go.uber.org/zap v1.17.0
+## explicit
 go.uber.org/zap
 go.uber.org/zap/buffer
 go.uber.org/zap/internal/bufferpool