Fix config change watching issue

src/common/notifier/config_watcher.go

@@ -2,7 +2,6 @@ package notifier
 
 import (
 	"errors"
-	"reflect"
 
 	"github.com/vmware/harbor/src/common/models"
 	"github.com/vmware/harbor/src/common/utils"
@@ -27,8 +26,10 @@ func WatchConfigChanges(cfg map[string]interface{}) error {
 		}
 
 		if t, yes := policyCfg.Parm["daily_time"]; yes {
-			if reflect.TypeOf(t).Kind() == reflect.Int {
-				policyNotification.DailyTime = (int64)(t.(int))
+			if dt, success := t.(float64); success {
+				policyNotification.DailyTime = (int64)(dt)
+			} else {
+				return errors.New("Invalid daily_time type")
 			}
 		}
 

src/common/notifier/notifier.go

@@ -200,6 +200,8 @@ func (nw *NotificationWatcher) Notify(notification Notification) error {
 				if err := hd.Handle(notification.Value); err != nil {
 					//Currently, we just log the error
 					log.Errorf("Error occurred when triggerring handler %s of topic %s: %s\n", reflect.TypeOf(hd).String(), notification.Topic, err.Error())
+				} else {
+					log.Infof("Handle notification with topic '%s': %#v\n", notification.Topic, notification.Value)
 				}
 			}()
 		}(h, handlerChan)

src/common/scheduler/policy/alternate_policy.go

@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"github.com/vmware/harbor/src/common/scheduler/task"
+	"github.com/vmware/harbor/src/common/utils/log"
 )
 
 //AlternatePolicyConfiguration store the related configurations for alternate policy.
@@ -125,6 +126,7 @@ func (alp *AlternatePolicy) Evaluate() (<-chan bool, error) {
 		}
 		if diff > 0 {
 			//Wait for a while.
+			log.Infof("Waiting for %d seconds after comparing offset %d and utc time %d\n", diff, alp.config.OffsetTime, utcTime)
 			select {
 			case <-time.After(time.Duration(diff) * time.Second):
 			case <-alp.terminator:

src/common/scheduler/watcher.go

@@ -70,6 +70,7 @@ func (wc *Watcher) Start() {
 			select {
 			case <-evalChan:
 				{
+					log.Infof("Receive evaluation signal from policy '%s'\n", pl.Name())
 					//Start to run the attached tasks.
 					for _, t := range pl.Tasks() {
 						go func(tk task.Task) {