Fix parallel image pullers event messages with reasons constants.

pkg/kubelet/container/image_puller.go

@@ -90,7 +90,7 @@ func (puller *imagePuller) PullImage(pod *api.Pod, container *api.Container, pul
 	if !shouldPullImage(container, present) {
 		if present {
 			msg := fmt.Sprintf("Container image %q already present on machine", container.Image)
-			puller.logIt(ref, api.EventTypeNormal, "Pulled", logPrefix, msg, glog.Info)
+			puller.logIt(ref, api.EventTypeNormal, PulledImage, logPrefix, msg, glog.Info)
 			return nil, ""
 		} else {
 			msg := fmt.Sprintf("Container image %q is not present with pull policy of Never", container.Image)
@@ -105,9 +105,9 @@ func (puller *imagePuller) PullImage(pod *api.Pod, container *api.Container, pul
 		puller.logIt(ref, api.EventTypeNormal, BackOffPullImage, logPrefix, msg, glog.Info)
 		return ErrImagePullBackOff, msg
 	}
-	puller.logIt(ref, api.EventTypeNormal, "Pulling", logPrefix, fmt.Sprintf("pulling image %q", container.Image), glog.Info)
+	puller.logIt(ref, api.EventTypeNormal, PullingImage, logPrefix, fmt.Sprintf("pulling image %q", container.Image), glog.Info)
 	if err := puller.runtime.PullImage(spec, pullSecrets); err != nil {
-		puller.logIt(ref, api.EventTypeWarning, "Failed", logPrefix, fmt.Sprintf("Failed to pull image %q: %v", container.Image, err), glog.Warning)
+		puller.logIt(ref, api.EventTypeWarning, FailedToPullImage, logPrefix, fmt.Sprintf("Failed to pull image %q: %v", container.Image, err), glog.Warning)
 		puller.backOff.Next(backOffKey, puller.backOff.Clock.Now())
 		if err == RegistryUnavailable {
 			msg := fmt.Sprintf("image pull failed for %s because the registry is temporarily unavailable.", container.Image)
@@ -116,7 +116,7 @@ func (puller *imagePuller) PullImage(pod *api.Pod, container *api.Container, pul
 			return ErrImagePull, err.Error()
 		}
 	}
-	puller.logIt(ref, api.EventTypeNormal, "Pulled", logPrefix, fmt.Sprintf("Successfully pulled image %q", container.Image), glog.Info)
+	puller.logIt(ref, api.EventTypeNormal, PulledImage, logPrefix, fmt.Sprintf("Successfully pulled image %q", container.Image), glog.Info)
 	puller.backOff.DeleteEntry(backOffKey)
 	puller.backOff.GC()
 	return nil, ""