Example #1
0
// 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)

}
Example #2
0
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
	})
}
Example #3
0
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
}
Example #4
0
// 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
}
Example #5
0
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
		}
	}
}
Example #6
0
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)
	}
}
Example #7
0
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)
		}
	}
}
Example #8
0
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)
	}
}
Example #9
0
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)
		}
	}
}
Example #10
0
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)
		}
	}
}
Example #11
0
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))
	}
}