Update dependencies to v0.18.10 tag

Automated cherry pick of #93646: let panics propagate up when processLoop panic

Kubernetes-commit: 9150263c8c7a42f3ae28e6e27a471d2697dfe5ed

Godeps/Godeps.json

@@ -76,7 +76,7 @@
 		},
 		{
 			"ImportPath": "github.com/evanphx/json-patch",
-			"Rev": "v4.2.0"
+			"Rev": "v4.9.0"
 		},
 		{
 			"ImportPath": "github.com/fsnotify/fsnotify",
@@ -238,6 +238,10 @@
 			"ImportPath": "github.com/peterbourgon/diskv",
 			"Rev": "v2.0.1"
 		},
+		{
+			"ImportPath": "github.com/pkg/errors",
+			"Rev": "v0.8.1"
+		},
 		{
 			"ImportPath": "github.com/pmezard/go-difflib",
 			"Rev": "v1.0.0"
@@ -348,11 +352,11 @@
 		},
 		{
 			"ImportPath": "k8s.io/api",
-			"Rev": "v0.18.4"
+			"Rev": "v0.18.10"
 		},
 		{
 			"ImportPath": "k8s.io/apimachinery",
-			"Rev": "v0.18.4"
+			"Rev": "v0.18.10"
 		},
 		{
 			"ImportPath": "k8s.io/gengo",

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/Azure/go-autorest/autorest v0.9.0
 	github.com/Azure/go-autorest/autorest/adal v0.5.0
 	github.com/davecgh/go-spew v1.1.1
-	github.com/evanphx/json-patch v4.2.0+incompatible
+	github.com/evanphx/json-patch v4.9.0+incompatible
 	github.com/gogo/protobuf v1.3.1
 	github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903
 	github.com/golang/protobuf v1.3.2
@@ -28,8 +28,8 @@ require (
 	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
 	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4
 	google.golang.org/appengine v1.5.0 // indirect
-	k8s.io/api v0.18.4
-	k8s.io/apimachinery v0.18.4
+	k8s.io/api v0.18.10
+	k8s.io/apimachinery v0.18.10
 	k8s.io/klog v1.0.0
 	k8s.io/utils v0.0.0-20200324210504-a9aa75ae1b89
 	sigs.k8s.io/yaml v1.2.0
@@ -38,6 +38,6 @@ require (
 replace (
 	golang.org/x/sys => golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a // pinned to release-branch.go1.13
 	golang.org/x/tools => golang.org/x/tools v0.0.0-20190821162956-65e3620a7ae7 // pinned to release-branch.go1.13
-	k8s.io/api => k8s.io/api v0.18.4
-	k8s.io/apimachinery => k8s.io/apimachinery v0.18.4
+	k8s.io/api => k8s.io/api v0.18.10
+	k8s.io/apimachinery => k8s.io/apimachinery v0.18.10
 )

go.sum

@@ -30,8 +30,8 @@ github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96/go.mod h1:Qh8CwZ
 github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153 h1:yUdfgN0XgIJw7foRItutHYUIhlcKzcSf5vDpdhQAKTc=
 github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
 github.com/emicklei/go-restful v0.0.0-20170410110728-ff4f55a20633/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
-github.com/evanphx/json-patch v4.2.0+incompatible h1:fUDGZCv/7iAN7u0puUVhvKCcsR6vRfwrJatElLBEf0I=
-github.com/evanphx/json-patch v4.2.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
+github.com/evanphx/json-patch v4.9.0+incompatible h1:kLcOMZeuLAJvL2BPWLMIj5oaZQobrkAqrL+WFZwQses=
+github.com/evanphx/json-patch v4.9.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
@@ -108,6 +108,8 @@ github.com/onsi/gomega v1.7.0 h1:XPnZz8VVBHjVsy1vzJmRwIcSwiUO+JFfrv/xGiigmME=
 github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/peterbourgon/diskv v2.0.1+incompatible h1:UBdAOUP5p4RWqPBg048CAvpKN+vxiaj6gdUUzhl4XmI=
 github.com/peterbourgon/diskv v2.0.1+incompatible/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/spf13/afero v1.2.2/go.mod h1:9ZxEEn6pIJ8Rxe320qSDBk6AsU0r9pR7Q4OcevTdifk=
@@ -182,8 +184,8 @@ gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-k8s.io/api v0.18.4/go.mod h1:lOIQAKYgai1+vz9J7YcDZwC26Z0zQewYOGWdyIPUUQ4=
-k8s.io/apimachinery v0.18.4/go.mod h1:OaXp26zu/5J7p0f92ASynJa1pZo06YlV9fG7BoWbCko=
+k8s.io/api v0.18.10/go.mod h1:xWtwPX1v47j5RTncmlMFGCx8b0avh+nP8OgZZ9hjo3M=
+k8s.io/apimachinery v0.18.10/go.mod h1:PF5taHbXgTEJLU+xMypMmYTXTWPJ5LaW8bfsisxnEXk=
 k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
 k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=

tools/cache/controller.go

@@ -138,11 +138,11 @@ func (c *controller) Run(stopCh <-chan struct{}) {
 	c.reflectorMutex.Unlock()
 
 	var wg wait.Group
-	defer wg.Wait()
 
 	wg.StartWithChannel(stopCh, r.Run)
 
 	wait.Until(c.processLoop, time.Second, stopCh)
+	wg.Wait()
 }
 
 // Returns true once this controller has completed an initial resource listing

tools/cache/controller_test.go

@@ -402,3 +402,49 @@ func TestUpdate(t *testing.T) {
 	testDoneWG.Wait()
 	close(stop)
 }
+
+func TestPanicPropagated(t *testing.T) {
+	// source simulates an apiserver object endpoint.
+	source := fcache.NewFakeControllerSource()
+
+	// Make a controller that just panic if the AddFunc is called.
+	_, controller := NewInformer(
+		source,
+		&v1.Pod{},
+		time.Millisecond*100,
+		ResourceEventHandlerFuncs{
+			AddFunc: func(obj interface{}) {
+				// Create a panic.
+				panic("Just panic.")
+			},
+		},
+	)
+
+	// Run the controller and run it until we close stop.
+	stop := make(chan struct{})
+	defer close(stop)
+
+	propagated := make(chan interface{})
+	go func() {
+		defer func() {
+			if r := recover(); r != nil {
+				propagated <- r
+			}
+		}()
+		controller.Run(stop)
+	}()
+	// Let's add a object to the source. It will trigger a panic.
+	source.Add(&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "test"}})
+
+	// Check if the panic propagated up.
+	select {
+	case p := <-propagated:
+		if p == "Just panic." {
+			t.Logf("Test Passed")
+		} else {
+			t.Errorf("unrecognized panic in controller run: %v", p)
+		}
+	case <-time.After(wait.ForeverTestTimeout):
+		t.Errorf("timeout: the panic failed to propagate from the controller run method!")
+	}
+}

tools/cache/reflector.go

@@ -82,9 +82,9 @@ type Reflector struct {
 	// observed when doing a sync with the underlying store
 	// it is thread safe, but not synchronized with the underlying store
 	lastSyncResourceVersion string
-	// isLastSyncResourceVersionGone is true if the previous list or watch request with lastSyncResourceVersion
-	// failed with an HTTP 410 (Gone) status code.
-	isLastSyncResourceVersionGone bool
+	// isLastSyncResourceVersionUnavailable is true if the previous list or watch request with
+	// lastSyncResourceVersion failed with an "expired" or "too large resource version" error.
+	isLastSyncResourceVersionUnavailable bool
 	// lastSyncResourceVersionMutex guards read/write access to lastSyncResourceVersion
 	lastSyncResourceVersionMutex sync.RWMutex
 	// WatchListPageSize is the requested chunk size of initial and resync watch lists.
@@ -256,13 +256,14 @@ func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
 			}
 
 			list, paginatedResult, err = pager.List(context.Background(), options)
-			if isExpiredError(err) {
-				r.setIsLastSyncResourceVersionExpired(true)
-				// Retry immediately if the resource version used to list is expired.
+			if isExpiredError(err) || isTooLargeResourceVersionError(err) {
+				r.setIsLastSyncResourceVersionUnavailable(true)
+				// Retry immediately if the resource version used to list is unavailable.
 				// The pager already falls back to full list if paginated list calls fail due to an "Expired" error on
-				// continuation pages, but the pager might not be enabled, or the full list might fail because the
-				// resource version it is listing at is expired, so we need to fallback to resourceVersion="" in all
-				// to recover and ensure the reflector makes forward progress.
+				// continuation pages, but the pager might not be enabled, the full list might fail because the
+				// resource version it is listing at is expired or the cache may not yet be synced to the provided
+				// resource version. So we need to fallback to resourceVersion="" in all to recover and ensure
+				// the reflector makes forward progress.
 				list, paginatedResult, err = pager.List(context.Background(), metav1.ListOptions{ResourceVersion: r.relistResourceVersion()})
 			}
 			close(listCh)
@@ -292,7 +293,7 @@ func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
 			r.paginatedResult = true
 		}
 
-		r.setIsLastSyncResourceVersionExpired(false) // list was successful
+		r.setIsLastSyncResourceVersionUnavailable(false) // list was successful
 		initTrace.Step("Objects listed")
 		listMetaInterface, err := meta.ListAccessor(list)
 		if err != nil {
@@ -396,7 +397,7 @@ func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
 			if err != errorStopRequested {
 				switch {
 				case isExpiredError(err):
-					// Don't set LastSyncResourceVersionExpired - LIST call with ResourceVersion=RV already
+					// Don't set LastSyncResourceVersionUnavailable - LIST call with ResourceVersion=RV already
 					// has a semantic that it returns data at least as fresh as provided RV.
 					// So first try to LIST with setting RV to resource version of last observed object.
 					klog.V(4).Infof("%s: watch of %v closed with: %v", r.name, r.expectedTypeName, err)
@@ -519,9 +520,9 @@ func (r *Reflector) relistResourceVersion() string {
 	r.lastSyncResourceVersionMutex.RLock()
 	defer r.lastSyncResourceVersionMutex.RUnlock()
 
-	if r.isLastSyncResourceVersionGone {
+	if r.isLastSyncResourceVersionUnavailable {
 		// Since this reflector makes paginated list requests, and all paginated list requests skip the watch cache
-		// if the lastSyncResourceVersion is expired, we set ResourceVersion="" and list again to re-establish reflector
+		// if the lastSyncResourceVersion is unavailable, we set ResourceVersion="" and list again to re-establish reflector
 		// to the latest available ResourceVersion, using a consistent read from etcd.
 		return ""
 	}
@@ -533,12 +534,12 @@ func (r *Reflector) relistResourceVersion() string {
 	return r.lastSyncResourceVersion
 }
 
-// setIsLastSyncResourceVersionExpired sets if the last list or watch request with lastSyncResourceVersion returned a
-// expired error: HTTP 410 (Gone) Status Code.
-func (r *Reflector) setIsLastSyncResourceVersionExpired(isExpired bool) {
+// setIsLastSyncResourceVersionUnavailable sets if the last list or watch request with lastSyncResourceVersion returned
+// "expired" or "too large resource version" error.
+func (r *Reflector) setIsLastSyncResourceVersionUnavailable(isUnavailable bool) {
 	r.lastSyncResourceVersionMutex.Lock()
 	defer r.lastSyncResourceVersionMutex.Unlock()
-	r.isLastSyncResourceVersionGone = isExpired
+	r.isLastSyncResourceVersionUnavailable = isUnavailable
 }
 
 func isExpiredError(err error) bool {
@@ -548,3 +549,28 @@ func isExpiredError(err error) bool {
 	// check when we fully drop support for Kubernetes 1.17 servers from reflectors.
 	return apierrors.IsResourceExpired(err) || apierrors.IsGone(err)
 }
+
+func isTooLargeResourceVersionError(err error) bool {
+	if apierrors.HasStatusCause(err, metav1.CauseTypeResourceVersionTooLarge) {
+		return true
+	}
+	// In Kubernetes 1.17.0-1.18.5, the api server doesn't set the error status cause to
+	// metav1.CauseTypeResourceVersionTooLarge to indicate that the requested minimum resource
+	// version is larger than the largest currently available resource version. To ensure backward
+	// compatibility with these server versions we also need to detect the error based on the content
+	// of the error message field.
+	if !apierrors.IsTimeout(err) {
+		return false
+	}
+	apierr, ok := err.(apierrors.APIStatus)
+	if !ok || apierr == nil || apierr.Status().Details == nil {
+		return false
+	}
+	for _, cause := range apierr.Status().Details.Causes {
+		// Matches the message returned by api server 1.17.0-1.18.5 for this error condition
+		if cause.Message == "Too large resource version" {
+			return true
+		}
+	}
+	return false
+}

tools/cache/reflector_test.go

@@ -714,6 +714,70 @@ func TestReflectorFullListIfExpired(t *testing.T) {
 	}
 }
 
+func TestReflectorFullListIfTooLarge(t *testing.T) {
+	stopCh := make(chan struct{})
+	s := NewStore(MetaNamespaceKeyFunc)
+	listCallRVs := []string{}
+
+	lw := &testLW{
+		WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
+			// Stop once the reflector begins watching since we're only interested in the list.
+			close(stopCh)
+			fw := watch.NewFake()
+			return fw, nil
+		},
+		ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
+			listCallRVs = append(listCallRVs, options.ResourceVersion)
+
+			switch options.ResourceVersion {
+			// initial list
+			case "0":
+				return &v1.PodList{ListMeta: metav1.ListMeta{ResourceVersion: "20"}}, nil
+			// relist after the initial list
+			case "20":
+				err := apierrors.NewTimeoutError("too large resource version", 1)
+				err.ErrStatus.Details.Causes = []metav1.StatusCause{{Type: metav1.CauseTypeResourceVersionTooLarge}}
+				return nil, err
+			// relist after the initial list (covers the error format used in api server 1.17.0-1.18.5)
+			case "30":
+				err := apierrors.NewTimeoutError("too large resource version", 1)
+				err.ErrStatus.Details.Causes = []metav1.StatusCause{{Message: "Too large resource version"}}
+				return nil, err
+			// relist from etcd after "too large" error
+			case "":
+				return &v1.PodList{ListMeta: metav1.ListMeta{ResourceVersion: "30"}}, nil
+			default:
+				return nil, fmt.Errorf("unexpected List call: %s", options.ResourceVersion)
+			}
+		},
+	}
+	r := NewReflector(lw, &v1.Pod{}, s, 0)
+
+	// Initial list should use RV=0
+	if err := r.ListAndWatch(stopCh); err != nil {
+		t.Fatal(err)
+	}
+
+	// Relist from the future version.
+	// This may happen, as watchcache is initialized from "current global etcd resource version"
+	// when kube-apiserver is starting and if no objects are changing after that each kube-apiserver
+	// may be synced to a different version and they will never converge.
+	// TODO: We should use etcd progress-notify feature to avoid this behavior but until this is
+	// done we simply try to relist from now to avoid continuous errors on relists.
+	for i := 1; i <= 2; i++ {
+		// relist twice to cover the two variants of TooLargeResourceVersion api errors
+		stopCh = make(chan struct{})
+		if err := r.ListAndWatch(stopCh); err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	expectedRVs := []string{"0", "20", "", "30", ""}
+	if !reflect.DeepEqual(listCallRVs, expectedRVs) {
+		t.Errorf("Expected series of list calls with resource version of %#v but got: %#v", expectedRVs, listCallRVs)
+	}
+}
+
 func TestReflectorSetExpectedType(t *testing.T) {
 	obj := &unstructured.Unstructured{}
 	gvk := schema.GroupVersionKind{