Merge pull request #60715 from aleksandra-malinowska/apiserver-cache-init

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix initializing watch cache

When initializing watch cache, set auxiliary fields in `storeElement` object. Fixes #60507.

```release-note
NONE
```

Kubernetes-commit: e2dee6073933c99b63addecfd6397c058b512cd4

Godeps/Godeps.json

@@ -816,339 +816,339 @@
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 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/util/uuid",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/util/validation",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/util/validation/field",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/util/wait",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/util/waitgroup",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/util/yaml",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/version",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery/pkg/watch",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/json",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/reflect",
-			"Rev": "4a62c19bf7bf4a3fdb2afb0b347553362d5c7684"
+			"Rev": "e9ff529c66f83aeac6dff90f11ea0c5b7c4d626a"
 		},
 		{
 			"ImportPath": "k8s.io/client-go/discovery",

pkg/storage/BUILD

@@ -28,7 +28,6 @@ go_test(
         "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/clock:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/diff:go_default_library",
-        "//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/watch:go_default_library",
         "//vendor/k8s.io/client-go/tools/cache:go_default_library",

pkg/storage/watch_cache.go

@@ -377,7 +377,17 @@ func (w *watchCache) Replace(objs []interface{}, resourceVersion string) error {
 		if err != nil {
 			return fmt.Errorf("couldn't compute key: %v", err)
 		}
-		toReplace = append(toReplace, &storeElement{Key: key, Object: object})
+		objLabels, objFields, objUninitialized, err := w.getAttrsFunc(object)
+		if err != nil {
+			return err
+		}
+		toReplace = append(toReplace, &storeElement{
+			Key:           key,
+			Object:        object,
+			Labels:        objLabels,
+			Fields:        objFields,
+			Uninitialized: objUninitialized,
+		})
 	}
 
 	w.Lock()

pkg/storage/watch_cache_test.go

@@ -17,6 +17,7 @@ limitations under the License.
 package storage
 
 import (
+	"fmt"
 	"strconv"
 	"testing"
 	"time"
@@ -29,7 +30,6 @@ import (
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/util/clock"
-	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/apimachinery/pkg/watch"
 	"k8s.io/client-go/tools/cache"
@@ -41,7 +41,23 @@ func makeTestPod(name string, resourceVersion uint64) *v1.Pod {
 			Namespace:       "ns",
 			Name:            name,
 			ResourceVersion: strconv.FormatUint(resourceVersion, 10),
+			Labels: map[string]string{
+				"k8s-app": "my-app",
+			},
 		},
+		Spec: v1.PodSpec{
+			NodeName: "some-node",
+		},
+	}
+}
+
+func makeTestStoreElement(pod *v1.Pod) *storeElement {
+	return &storeElement{
+		Key:           "prefix/ns/" + pod.Name,
+		Object:        pod,
+		Labels:        labels.Set(pod.Labels),
+		Fields:        fields.Set{"spec.nodeName": pod.Spec.NodeName},
+		Uninitialized: false,
 	}
 }
 
@@ -51,7 +67,11 @@ func newTestWatchCache(capacity int) *watchCache {
 		return NamespaceKeyFunc("prefix", obj)
 	}
 	getAttrsFunc := func(obj runtime.Object) (labels.Set, fields.Set, bool, error) {
-		return nil, nil, false, nil
+		pod, ok := obj.(*v1.Pod)
+		if !ok {
+			return nil, nil, false, fmt.Errorf("not a pod!")
+		}
+		return labels.Set(pod.Labels), fields.Set{"spec.nodeName": pod.Spec.NodeName}, false, nil
 	}
 	wc := newWatchCache(capacity, keyFunc, getAttrsFunc)
 	wc.clock = clock.NewFakeClock(time.Now())
@@ -69,8 +89,9 @@ func TestWatchCacheBasic(t *testing.T) {
 	if item, ok, _ := store.Get(pod1); !ok {
 		t.Errorf("didn't find pod")
 	} else {
-		if !apiequality.Semantic.DeepEqual(&storeElement{Key: "prefix/ns/pod", Object: pod1}, item) {
+		expected := makeTestStoreElement(makeTestPod("pod", 1))
-			t.Errorf("expected %v, got %v", pod1, item)
+		if !apiequality.Semantic.DeepEqual(expected, item) {
+			t.Errorf("expected %v, got %v", expected, item)
 		}
 	}
 	pod2 := makeTestPod("pod", 2)
@@ -80,8 +101,9 @@ func TestWatchCacheBasic(t *testing.T) {
 	if item, ok, _ := store.Get(pod2); !ok {
 		t.Errorf("didn't find pod")
 	} else {
-		if !apiequality.Semantic.DeepEqual(&storeElement{Key: "prefix/ns/pod", Object: pod2}, item) {
+		expected := makeTestStoreElement(makeTestPod("pod", 2))
-			t.Errorf("expected %v, got %v", pod1, item)
+		if !apiequality.Semantic.DeepEqual(expected, item) {
+			t.Errorf("expected %v, got %v", expected, item)
 		}
 	}
 	pod3 := makeTestPod("pod", 3)
@@ -97,15 +119,18 @@ func TestWatchCacheBasic(t *testing.T) {
 	store.Add(makeTestPod("pod2", 5))
 	store.Add(makeTestPod("pod3", 6))
 	{
-		podNames := sets.String{}
+		expected := map[string]storeElement{
+			"prefix/ns/pod1": *makeTestStoreElement(makeTestPod("pod1", 4)),
+			"prefix/ns/pod2": *makeTestStoreElement(makeTestPod("pod2", 5)),
+			"prefix/ns/pod3": *makeTestStoreElement(makeTestPod("pod3", 6)),
+		}
+		items := make(map[string]storeElement, 0)
 		for _, item := range store.List() {
-			podNames.Insert(item.(*storeElement).Object.(*v1.Pod).ObjectMeta.Name)
+			elem := item.(*storeElement)
+			items[elem.Key] = *elem
 		}
-		if !podNames.HasAll("pod1", "pod2", "pod3") {
+		if !apiequality.Semantic.DeepEqual(expected, items) {
-			t.Errorf("missing pods, found %v", podNames)
+			t.Errorf("expected %v, got %v", expected, items)
-		}
-		if len(podNames) != 3 {
-			t.Errorf("found missing/extra items")
 		}
 	}
 
@@ -115,15 +140,17 @@ func TestWatchCacheBasic(t *testing.T) {
 		makeTestPod("pod5", 8),
 	}, "8")
 	{
-		podNames := sets.String{}
+		expected := map[string]storeElement{
+			"prefix/ns/pod4": *makeTestStoreElement(makeTestPod("pod4", 7)),
+			"prefix/ns/pod5": *makeTestStoreElement(makeTestPod("pod5", 8)),
+		}
+		items := make(map[string]storeElement)
 		for _, item := range store.List() {
-			podNames.Insert(item.(*storeElement).Object.(*v1.Pod).ObjectMeta.Name)
+			elem := item.(*storeElement)
+			items[elem.Key] = *elem
 		}
-		if !podNames.HasAll("pod4", "pod5") {
+		if !apiequality.Semantic.DeepEqual(expected, items) {
-			t.Errorf("missing pods, found %v", podNames)
+			t.Errorf("expected %v, got %v", expected, items)
-		}
-		if len(podNames) != 2 {
-			t.Errorf("found missing/extra items")
 		}
 	}
 }
@@ -288,8 +315,9 @@ func TestWaitUntilFreshAndGet(t *testing.T) {
 	if !exists {
 		t.Fatalf("no results returned: %#v", obj)
 	}
-	if !apiequality.Semantic.DeepEqual(&storeElement{Key: "prefix/ns/bar", Object: makeTestPod("bar", 5)}, obj) {
+	expected := makeTestStoreElement(makeTestPod("bar", 5))
-		t.Errorf("unexpected element returned: %#v", obj)
+	if !apiequality.Semantic.DeepEqual(expected, obj) {
+		t.Errorf("expected %v, got %v", expected, obj)
 	}
 }