func TestExtractListGenericV1(t *testing.T) {
pl := &v1.List{
Items: []runtime.RawExtension{
{RawJSON: []byte("foo")},
{RawJSON: []byte("bar")},
{Object: &v1.Pod{ObjectMeta: v1.ObjectMeta{Name: "other"}}},
},
}
list, err := meta.ExtractList(pl)
if err != nil {
t.Fatalf("Unexpected error %v", err)
}
if e, a := len(list), len(pl.Items); e != a {
t.Fatalf("Expected %v, got %v", e, a)
}
if obj, ok := list[0].(*runtime.Unknown); !ok {
t.Fatalf("Expected list[0] to be *runtime.Unknown, it is %#v", obj)
}
if obj, ok := list[1].(*runtime.Unknown); !ok {
t.Fatalf("Expected list[1] to be *runtime.Unknown, it is %#v", obj)
}
if obj, ok := list[2].(*v1.Pod); !ok {
t.Fatalf("Expected list[2] to be *runtime.Unknown, it is %#v", obj)
}
}
func (o objects) Add(obj runtime.Object) error {
gvk, err := o.scheme.ObjectKind(obj)
if err != nil {
return err
}
kind := gvk.Kind
switch {
case meta.IsListType(obj):
if kind != "List" {
o.types[kind] = append(o.types[kind], obj)
}
list, err := meta.ExtractList(obj)
if err != nil {
return err
}
if errs := runtime.DecodeList(list, o.decoder); len(errs) > 0 {
return errs[0]
}
for _, obj := range list {
if err := o.Add(obj); err != nil {
return err
}
}
default:
if status, ok := obj.(*unversioned.Status); ok && status.Details != nil {
kind = status.Details.Kind
}
o.types[kind] = append(o.types[kind], obj)
}
return nil
}
func TestExtractListOfInterfacePtrs(t *testing.T) {
pl := &fakePtrInterfaceList{
Items: &[]runtime.Object{},
}
list, err := meta.ExtractList(pl)
if err != nil {
t.Fatalf("Unexpected error %v", err)
}
if len(list) > 0 {
t.Fatalf("Expected empty list, got %#v", list)
}
}
func TestExtractListOfValuePtrs(t *testing.T) {
pl := &fakePtrValueList{
Items: []*api.Pod{
{ObjectMeta: api.ObjectMeta{Name: "1"}},
{ObjectMeta: api.ObjectMeta{Name: "2"}},
},
}
list, err := meta.ExtractList(pl)
if err != nil {
t.Fatalf("Unexpected error %v", err)
}
if e, a := len(list), len(pl.Items); e != a {
t.Fatalf("Expected %v, got %v", e, a)
}
for i := range list {
if obj, ok := list[i].(*api.Pod); !ok {
t.Fatalf("Expected list[%d] to be *api.Pod, it is %#v", i, obj)
}
}
}
func TestExtractListGeneric(t *testing.T) {
pl := &api.List{
Items: []runtime.Object{
&api.Pod{ObjectMeta: api.ObjectMeta{Name: "1"}},
&api.Service{ObjectMeta: api.ObjectMeta{Name: "2"}},
},
}
list, err := meta.ExtractList(pl)
if err != nil {
t.Fatalf("Unexpected error %v", err)
}
if e, a := len(list), len(pl.Items); e != a {
t.Fatalf("Expected %v, got %v", e, a)
}
if obj, ok := list[0].(*api.Pod); !ok {
t.Fatalf("Expected list[0] to be *api.Pod, it is %#v", obj)
}
if obj, ok := list[1].(*api.Service); !ok {
t.Fatalf("Expected list[1] to be *api.Service, it is %#v", obj)
}
}
func TestExtractListV1(t *testing.T) {
pl := &v1.PodList{
Items: []v1.Pod{
{ObjectMeta: v1.ObjectMeta{Name: "1"}},
{ObjectMeta: v1.ObjectMeta{Name: "2"}},
{ObjectMeta: v1.ObjectMeta{Name: "3"}},
},
}
list, err := meta.ExtractList(pl)
if err != nil {
t.Fatalf("Unexpected error %v", err)
}
if e, a := len(list), len(pl.Items); e != a {
t.Fatalf("Expected %v, got %v", e, a)
}
for i := range list {
if e, a := list[i].(*v1.Pod).Name, pl.Items[i].Name; e != a {
t.Fatalf("Expected %v, got %v", e, a)
}
}
}
func TestSetExtractListRoundTrip(t *testing.T) {
fuzzer := fuzz.New().NilChance(0).NumElements(1, 5)
for i := 0; i < 5; i++ {
start := &api.PodList{}
fuzzer.Fuzz(&start.Items)
list, err := meta.ExtractList(start)
if err != nil {
t.Errorf("Unexpected error %v", err)
continue
}
got := &api.PodList{}
err = meta.SetList(got, list)
if err != nil {
t.Errorf("Unexpected error %v", err)
continue
}
if e, a := start, got; !reflect.DeepEqual(e, a) {
t.Fatalf("Expected %#v, got %#v", e, a)
}
}
}
func TestArrayOfRuntimeObject(t *testing.T) {
internalGV := unversioned.GroupVersion{Group: "test.group", Version: runtime.APIVersionInternal}
externalGV := unversioned.GroupVersion{Group: "test.group", Version: "v1test"}
s := runtime.NewScheme()
s.AddKnownTypes(internalGV, &EmbeddedTest{})
s.AddKnownTypeWithName(externalGV.WithKind("EmbeddedTest"), &EmbeddedTestExternal{})
s.AddKnownTypes(internalGV, &ObjectTest{})
s.AddKnownTypeWithName(externalGV.WithKind("ObjectTest"), &ObjectTestExternal{})
codec := serializer.NewCodecFactory(s).LegacyCodec(externalGV)
innerItems := []runtime.Object{
&EmbeddedTest{ID: "baz"},
}
items := []runtime.Object{
&EmbeddedTest{ID: "foo"},
&EmbeddedTest{ID: "bar"},
// TODO: until YAML is removed, this JSON must be in ascending key order to ensure consistent roundtrip serialization
&runtime.Unknown{RawJSON: []byte(`{"apiVersion":"unknown.group/unknown","foo":"bar","kind":"OtherTest"}`)},
&ObjectTest{
Items: runtime.NewEncodableList(codec, innerItems),
},
}
internal := &ObjectTest{
Items: runtime.NewEncodableList(codec, items),
}
wire, err := runtime.Encode(codec, internal)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
t.Logf("Wire format is:\n%s\n", string(wire))
obj := &ObjectTestExternal{}
if err := json.Unmarshal(wire, obj); err != nil {
t.Fatalf("unexpected error: %v", err)
}
t.Logf("exact wire is: %s", string(obj.Items[0].RawJSON))
items[3] = &ObjectTest{Items: innerItems}
internal.Items = items
decoded, err := runtime.Decode(codec, wire)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
list, err := meta.ExtractList(decoded)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if errs := runtime.DecodeList(list, codec); len(errs) > 0 {
t.Fatalf("unexpected error: %v", errs)
}
list2, err := meta.ExtractList(list[3])
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if errs := runtime.DecodeList(list2, codec); len(errs) > 0 {
t.Fatalf("unexpected error: %v", errs)
}
if err := meta.SetList(list[3], list2); err != nil {
t.Fatalf("unexpected error: %v", err)
}
// we want DecodeList to set type meta if possible, even on runtime.Unknown objects
internal.Items[2].(*runtime.Unknown).TypeMeta = runtime.TypeMeta{Kind: "OtherTest", APIVersion: "unknown.group/unknown"}
if e, a := internal.Items, list; !reflect.DeepEqual(e, a) {
t.Errorf("mismatched decoded: %s", util.ObjectGoPrintSideBySide(e, a))
}
}
// ListAndWatch first lists all items and get the resource version at the moment of call,
// and then use the resource version to watch.
// It returns error if ListAndWatch didn't even try to initialize watch.
func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
var resourceVersion string
resyncCh, cleanup := r.resyncChan()
defer cleanup()
// Explicitly set "0" as resource version - it's fine for the List()
// to be served from cache and potentially be delayed relative to
// etcd contents. Reflector framework will catch up via Watch() eventually.
options := api.ListOptions{ResourceVersion: "0"}
list, err := r.listerWatcher.List(options)
if err != nil {
return fmt.Errorf("%s: Failed to list %v: %v", r.name, r.expectedType, err)
}
metaInterface, err := meta.Accessor(list)
if err != nil {
return fmt.Errorf("%s: Unable to understand list result %#v", r.name, list)
}
resourceVersion = metaInterface.GetResourceVersion()
items, err := meta.ExtractList(list)
if err != nil {
return fmt.Errorf("%s: Unable to understand list result %#v (%v)", r.name, list, err)
}
if err := r.syncWith(items, resourceVersion); err != nil {
return fmt.Errorf("%s: Unable to sync list result: %v", r.name, err)
}
r.setLastSyncResourceVersion(resourceVersion)
for {
options := api.ListOptions{
ResourceVersion: resourceVersion,
// We want to avoid situations when resyncing is breaking the TCP connection
// - see comment for 'timeoutForWatch()' for more details.
TimeoutSeconds: r.timeoutForWatch(),
}
w, err := r.listerWatcher.Watch(options)
if err != nil {
switch err {
case io.EOF:
// watch closed normally
case io.ErrUnexpectedEOF:
glog.V(1).Infof("%s: Watch for %v closed with unexpected EOF: %v", r.name, r.expectedType, err)
default:
utilruntime.HandleError(fmt.Errorf("%s: Failed to watch %v: %v", r.name, r.expectedType, err))
}
// If this is "connection refused" error, it means that most likely apiserver is not responsive.
// It doesn't make sense to re-list all objects because most likely we will be able to restart
// watch where we ended.
// If that's the case wait and resend watch request.
if urlError, ok := err.(*url.Error); ok {
if opError, ok := urlError.Err.(*net.OpError); ok {
if errno, ok := opError.Err.(syscall.Errno); ok && errno == syscall.ECONNREFUSED {
time.Sleep(time.Second)
continue
}
}
}
return nil
}
if err := r.watchHandler(w, &resourceVersion, resyncCh, stopCh); err != nil {
if err != errorResyncRequested && err != errorStopRequested {
glog.Warningf("%s: watch of %v ended with: %v", r.name, r.expectedType, err)
}
return nil
}
if r.canForceResyncNow() {
glog.V(4).Infof("%s: next resync planned for %#v, forcing now", r.name, r.nextResync)
return nil
}
}
}