Use uid in config.go instead of pod full name.

pkg/kubelet/config/config.go

@@ -22,6 +22,7 @@ import (
 	"sync"
 
 	"github.com/golang/glog"
+	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/util/validation/field"
 	"k8s.io/client-go/tools/record"
@@ -117,8 +118,8 @@ func (c *PodConfig) Sync() {
 // available, then this object should be considered authoritative.
 type podStorage struct {
 	podLock sync.RWMutex
-	// map of source name to pod name to pod reference
-	pods map[string]map[string]*v1.Pod
+	// map of source name to pod uid to pod reference
+	pods map[string]map[types.UID]*v1.Pod
 	mode PodConfigNotificationMode
 
 	// ensures that updates are delivered in strict order
@@ -139,7 +140,7 @@ type podStorage struct {
 // TODO: allow initialization of the current state of the store with snapshotted version.
 func newPodStorage(updates chan<- kubetypes.PodUpdate, mode PodConfigNotificationMode, recorder record.EventRecorder) *podStorage {
 	return &podStorage{
-		pods:        make(map[string]map[string]*v1.Pod),
+		pods:        make(map[string]map[types.UID]*v1.Pod),
 		mode:        mode,
 		updates:     updates,
 		sourcesSeen: sets.String{},
@@ -221,23 +222,22 @@ func (s *podStorage) merge(source string, change interface{}) (adds, updates, de
 
 	pods := s.pods[source]
 	if pods == nil {
-		pods = make(map[string]*v1.Pod)
+		pods = make(map[types.UID]*v1.Pod)
 	}
 
 	// updatePodFunc is the local function which updates the pod cache *oldPods* with new pods *newPods*.
 	// After updated, new pod will be stored in the pod cache *pods*.
 	// Notice that *pods* and *oldPods* could be the same cache.
-	updatePodsFunc := func(newPods []*v1.Pod, oldPods, pods map[string]*v1.Pod) {
+	updatePodsFunc := func(newPods []*v1.Pod, oldPods, pods map[types.UID]*v1.Pod) {
 		filtered := filterInvalidPods(newPods, source, s.recorder)
 		for _, ref := range filtered {
-			name := kubecontainer.GetPodFullName(ref)
 			// Annotate the pod with the source before any comparison.
 			if ref.Annotations == nil {
 				ref.Annotations = make(map[string]string)
 			}
 			ref.Annotations[kubetypes.ConfigSourceAnnotationKey] = source
-			if existing, found := oldPods[name]; found {
-				pods[name] = existing
+			if existing, found := oldPods[ref.UID]; found {
+				pods[ref.UID] = existing
 				needUpdate, needReconcile, needGracefulDelete := checkAndUpdatePod(existing, ref)
 				if needUpdate {
 					updatePods = append(updatePods, existing)
@@ -249,7 +249,7 @@ func (s *podStorage) merge(source string, change interface{}) (adds, updates, de
 				continue
 			}
 			recordFirstSeenTime(ref)
-			pods[name] = ref
+			pods[ref.UID] = ref
 			addPods = append(addPods, ref)
 		}
 	}
@@ -280,10 +280,9 @@ func (s *podStorage) merge(source string, change interface{}) (adds, updates, de
 	case kubetypes.REMOVE:
 		glog.V(4).Infof("Removing pods from source %s : %v", source, update.Pods)
 		for _, value := range update.Pods {
-			name := kubecontainer.GetPodFullName(value)
-			if existing, found := pods[name]; found {
+			if existing, found := pods[value.UID]; found {
 				// this is a delete
-				delete(pods, name)
+				delete(pods, value.UID)
 				removePods = append(removePods, existing)
 				continue
 			}
@@ -295,10 +294,10 @@ func (s *podStorage) merge(source string, change interface{}) (adds, updates, de
 		s.markSourceSet(source)
 		// Clear the old map entries by just creating a new map
 		oldPods := pods
-		pods = make(map[string]*v1.Pod)
+		pods = make(map[types.UID]*v1.Pod)
 		updatePodsFunc(update.Pods, oldPods, pods)
-		for name, existing := range oldPods {
-			if _, found := pods[name]; !found {
+		for uid, existing := range oldPods {
+			if _, found := pods[uid]; !found {
 				// this is a delete
 				removePods = append(removePods, existing)
 			}
@@ -339,9 +338,8 @@ func filterInvalidPods(pods []*v1.Pod, source string, recorder record.EventRecor
 		// TODO: remove the conversion when validation is performed on versioned objects.
 		internalPod := &api.Pod{}
 		if err := v1.Convert_v1_Pod_To_api_Pod(pod, internalPod, nil); err != nil {
-			name := kubecontainer.GetPodFullName(pod)
-			glog.Warningf("Pod[%d] (%s) from %s failed to convert to v1, ignoring: %v", i+1, name, source, err)
-			recorder.Eventf(pod, v1.EventTypeWarning, "FailedConversion", "Error converting pod %s from %s, ignoring: %v", name, source, err)
+			glog.Warningf("Pod[%d] (%s) from %s failed to convert to v1, ignoring: %v", i+1, format.Pod(pod), source, err)
+			recorder.Eventf(pod, v1.EventTypeWarning, "FailedConversion", "Error converting pod %s from %s, ignoring: %v", format.Pod(pod), source, err)
 			continue
 		}
 		if errs := validation.ValidatePod(internalPod); len(errs) != 0 {
@@ -359,10 +357,9 @@ func filterInvalidPods(pods []*v1.Pod, source string, recorder record.EventRecor
 			}
 		}
 		if len(errlist) > 0 {
-			name := bestPodIdentString(pod)
 			err := errlist.ToAggregate()
-			glog.Warningf("Pod[%d] (%s) from %s failed validation, ignoring: %v", i+1, name, source, err)
-			recorder.Eventf(pod, v1.EventTypeWarning, events.FailedValidation, "Error validating pod %s from %s, ignoring: %v", name, source, err)
+			glog.Warningf("Pod[%d] (%s) from %s failed validation, ignoring: %v", i+1, format.Pod(pod), source, err)
+			recorder.Eventf(pod, v1.EventTypeWarning, events.FailedValidation, "Error validating pod %s from %s, ignoring: %v", format.Pod(pod), source, err)
 			continue
 		}
 		filtered = append(filtered, pod)
@@ -515,18 +512,6 @@ func (s *podStorage) MergedState() interface{} {
 	return pods
 }
 
-func bestPodIdentString(pod *v1.Pod) string {
-	namespace := pod.Namespace
-	if namespace == "" {
-		namespace = "<empty-namespace>"
-	}
-	name := pod.Name
-	if name == "" {
-		name = "<empty-name>"
-	}
-	return fmt.Sprintf("%s.%s", name, namespace)
-}
-
 func copyPods(sourcePods []*v1.Pod) []*v1.Pod {
 	pods := []*v1.Pod{}
 	for _, source := range sourcePods {

pkg/kubelet/config/config_test.go

@@ -62,7 +62,7 @@ func (s sortedPods) Less(i, j int) bool {
 func CreateValidPod(name, namespace string) *v1.Pod {
 	return &v1.Pod{
 		ObjectMeta: metav1.ObjectMeta{
-			UID:       types.UID(name), // for the purpose of testing, this is unique enough
+			UID:       types.UID(name + namespace), // for the purpose of testing, this is unique enough
 			Name:      name,
 			Namespace: namespace,
 		},
@@ -248,7 +248,7 @@ func TestNewPodAddedUpdatedRemoved(t *testing.T) {
 	channel <- podUpdate
 	expectPodUpdate(t, ch, CreatePodUpdate(kubetypes.UPDATE, TestSource, pod))
 
-	podUpdate = CreatePodUpdate(kubetypes.REMOVE, TestSource, &v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "new"}})
+	podUpdate = CreatePodUpdate(kubetypes.REMOVE, TestSource, CreateValidPod("foo", "new"))
 	channel <- podUpdate
 	expectPodUpdate(t, ch, CreatePodUpdate(kubetypes.REMOVE, TestSource, pod))
 }