Add logging utilities

pkg/util/log.go

@@ -0,0 +1,40 @@
+package util
+
+import (
+	"fmt"
+	"time"
+
+	"k8s.io/klog"
+)
+
+func Errorf(format string, a ...interface{}) {
+	klog.Errorf(fmt.Sprintf("[Error] %s", format), a...)
+}
+
+func Warningf(format string, a ...interface{}) {
+	klog.V(2).Infof(fmt.Sprintf("[Warning] %s", format), a...)
+}
+
+func Infof(format string, a ...interface{}) {
+	klog.V(3).Infof(fmt.Sprintf("[Info] %s", format), a...)
+}
+
+func Profilef(format string, a ...interface{}) {
+	klog.V(3).Infof(fmt.Sprintf("[Profiler] %s", format), a...)
+}
+
+func Debugf(format string, a ...interface{}) {
+	klog.V(4).Infof(fmt.Sprintf("[Debug] %s", format), a...)
+}
+
+func Profile(start time.Time, name string) {
+	elapsed := time.Since(start)
+	Profilef("%s: %s", elapsed, name)
+}
+
+func ProfileWithThreshold(start time.Time, threshold time.Duration, name string) {
+	elapsed := time.Since(start)
+	if elapsed > threshold {
+		Profilef("%s: %s", elapsed, name)
+	}
+}