// setListSelfLink sets the self link of a list to the base URL, then sets the self links
// on all child objects returned.
func setListSelfLink(obj runtime.Object, req *restful.Request, namer ScopeNamer) error {
if !runtime.IsListType(obj) {
return nil
}
// TODO: List SelfLink generation should return a full URL?
path, query, err := namer.GenerateListLink(req)
if err != nil {
return err
}
newURL := *req.Request.URL
newURL.Path = path
newURL.RawQuery = query
// use the path that got us here
newURL.Fragment = ""
if err := namer.SetSelfLink(obj, newURL.String()); err != nil {
glog.V(4).Infof("Unable to set self link on object: %v", err)
}
// Set self-link of objects in the list.
items, err := runtime.ExtractList(obj)
if err != nil {
return err
}
for i := range items {
if err := setSelfLink(items[i], req, namer); err != nil {
return err
}
}
return runtime.SetList(obj, items)
}
func (v FlattenListVisitor) Visit(fn VisitorFunc) error {
return v.Visitor.Visit(func(info *Info) error {
if info.Object == nil {
return fn(info)
}
items, err := runtime.ExtractList(info.Object)
if err != nil {
return fn(info)
}
if errs := runtime.DecodeList(items, struct {
runtime.ObjectTyper
runtime.Decoder
}{v.Mapper, info.Mapping.Codec}); len(errs) > 0 {
return errors.NewAggregate(errs)
}
for i := range items {
item, err := v.InfoForObject(items[i])
if err != nil {
return err
}
if len(info.ResourceVersion) != 0 {
item.ResourceVersion = info.ResourceVersion
}
if err := fn(item); err != nil {
return err
}
}
return nil
})
}
func (o objects) Add(obj runtime.Object) error {
_, kind, err := o.scheme.ObjectVersionAndKind(obj)
if err != nil {
return err
}
switch {
case runtime.IsListType(obj):
if kind != "List" {
o.types[kind] = append(o.types[kind], obj)
}
list, err := runtime.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.(*api.Status); ok && status.Details != nil {
kind = status.Details.Kind
}
o.types[kind] = append(o.types[kind], obj)
}
return nil
}
// FilterList filters any list object that conforms to the api conventions,
// provided that 'm' works with the concrete type of list. d is an optional
// decorator for the returned functions. Only matching items are decorated.
func FilterList(list runtime.Object, m Matcher, d DecoratorFunc) (filtered runtime.Object, err error) {
// TODO: push a matcher down into tools.EtcdHelper to avoid all this
// nonsense. This is a lot of unnecessary copies.
items, err := runtime.ExtractList(list)
if err != nil {
return nil, err
}
var filteredItems []runtime.Object
for _, obj := range items {
match, err := m.Matches(obj)
if err != nil {
return nil, err
}
if match {
if d != nil {
if err := d(obj); err != nil {
return nil, err
}
}
filteredItems = append(filteredItems, obj)
}
}
err = runtime.SetList(list, filteredItems)
if err != nil {
return nil, err
}
return list, nil
}
func (r *Reflector) listAndWatch(stopCh <-chan struct{}) {
var resourceVersion string
resyncCh, cleanup := r.resyncChan()
defer cleanup()
list, err := r.listerWatcher.List()
if err != nil {
glog.Errorf("Failed to list %v: %v", r.expectedType, err)
return
}
meta, err := meta.Accessor(list)
if err != nil {
glog.Errorf("Unable to understand list result %#v", list)
return
}
resourceVersion = meta.ResourceVersion()
items, err := runtime.ExtractList(list)
if err != nil {
glog.Errorf("Unable to understand list result %#v (%v)", list, err)
return
}
if err := r.syncWith(items); err != nil {
glog.Errorf("Unable to sync list result: %v", err)
return
}
r.setLastSyncResourceVersion(resourceVersion)
for {
w, err := r.listerWatcher.Watch(resourceVersion)
if err != nil {
switch err {
case io.EOF:
// watch closed normally
case io.ErrUnexpectedEOF:
glog.V(1).Infof("Watch for %v closed with unexpected EOF: %v", r.expectedType, err)
default:
glog.Errorf("Failed to watch %v: %v", 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
}
if err := r.watchHandler(w, &resourceVersion, resyncCh, stopCh); err != nil {
if err != errorResyncRequested && err != errorStopRequested {
glog.Errorf("watch of %v ended with: %v", r.expectedType, err)
}
return
}
}
}
func TestExtractListOfInterfacePtrs(t *testing.T) {
pl := &fakePtrInterfaceList{
Items: &[]runtime.Object{},
}
list, err := runtime.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 := runtime.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 := runtime.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 TestExtractList(t *testing.T) {
pl := &api.PodList{
Items: []api.Pod{
{ObjectMeta: api.ObjectMeta{Name: "1"}},
{ObjectMeta: api.ObjectMeta{Name: "2"}},
{ObjectMeta: api.ObjectMeta{Name: "3"}},
},
}
list, err := runtime.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].(*api.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 := runtime.ExtractList(start)
if err != nil {
t.Errorf("Unexpected error %v", err)
continue
}
got := &api.PodList{}
err = runtime.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) {
s := runtime.NewScheme()
s.AddKnownTypes("", &EmbeddedTest{})
s.AddKnownTypeWithName("v1test", "EmbeddedTest", &EmbeddedTestExternal{})
s.AddKnownTypes("", &ObjectTest{})
s.AddKnownTypeWithName("v1test", "ObjectTest", &ObjectTestExternal{})
internal := &ObjectTest{
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","foo":"bar","kind":"OtherTest"}`)},
&ObjectTest{
Items: []runtime.Object{
&EmbeddedTest{ID: "baz"},
},
},
},
}
wire, err := s.EncodeToVersion(internal, "v1test")
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))
decoded, err := s.Decode(wire)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
list, err := runtime.ExtractList(decoded)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if errs := runtime.DecodeList(list, s); len(errs) > 0 {
t.Fatalf("unexpected error: %v", errs)
}
list2, err := runtime.ExtractList(list[3])
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if errs := runtime.DecodeList(list2, s); len(errs) > 0 {
t.Fatalf("unexpected error: %v", errs)
}
if err := runtime.SetList(list[3], list2); err != nil {
t.Fatalf("unexpected error: %v", err)
}
internal.Items[2].(*runtime.Unknown).Kind = "OtherTest"
internal.Items[2].(*runtime.Unknown).APIVersion = "unknown"
if e, a := internal.Items, list; !reflect.DeepEqual(e, a) {
t.Errorf("mismatched decoded: %s", util.ObjectDiff(e, a))
}
}