Пример #1
0
// MetaNamespaceIndexFunc is a default index function that indexes based on an object's namespace
func MetaNamespaceIndexFunc(obj interface{}) (string, error) {
	meta, err := meta.Accessor(obj)
	if err != nil {
		return "", fmt.Errorf("object has no meta: %v", err)
	}
	return meta.Namespace(), nil
}
Пример #2
0
// nameIndexFunc is an index function that indexes based on an object's name
func nameIndexFunc(obj interface{}) ([]string, error) {
	meta, err := meta.Accessor(obj)
	if err != nil {
		return []string{""}, fmt.Errorf("object has no meta: %v", err)
	}
	return []string{meta.Name()}, nil
}
Пример #3
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 {
		util.HandleError(fmt.Errorf("%s: Failed to list %v: %v", r.name, r.expectedType, err))
		return
	}
	meta, err := meta.Accessor(list)
	if err != nil {
		util.HandleError(fmt.Errorf("%s: Unable to understand list result %#v", r.name, list))
		return
	}
	resourceVersion = meta.ResourceVersion()
	items, err := runtime.ExtractList(list)
	if err != nil {
		util.HandleError(fmt.Errorf("%s: Unable to understand list result %#v (%v)", r.name, list, err))
		return
	}
	if err := r.syncWith(items); err != nil {
		util.HandleError(fmt.Errorf("%s: Unable to sync list result: %v", r.name, 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("%s: Watch for %v closed with unexpected EOF: %v", r.name, r.expectedType, err)
			default:
				util.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
		}
		if err := r.watchHandler(w, &resourceVersion, resyncCh, stopCh); err != nil {
			if err != errorResyncRequested && err != errorStopRequested {
				util.HandleError(fmt.Errorf("%s: watch of %v ended with: %v", r.name, r.expectedType, err))
			}
			return
		}
	}
}
Пример #4
0
// GetReference returns an ObjectReference which refers to the given
// object, or an error if the object doesn't follow the conventions
// that would allow this.
func GetReference(obj runtime.Object) (*ObjectReference, error) {
	if obj == nil {
		return nil, ErrNilObject
	}
	if ref, ok := obj.(*ObjectReference); ok {
		// Don't make a reference to a reference.
		return ref, nil
	}
	meta, err := meta.Accessor(obj)
	if err != nil {
		return nil, err
	}
	_, kind, err := Scheme.ObjectVersionAndKind(obj)
	if err != nil {
		return nil, err
	}
	version := versionFromSelfLink.FindStringSubmatch(meta.SelfLink())
	if len(version) < 2 {
		return nil, fmt.Errorf("unexpected self link format: '%v'; got version '%v'", meta.SelfLink(), version)
	}
	return &ObjectReference{
		Kind:            kind,
		APIVersion:      version[1],
		Name:            meta.Name(),
		Namespace:       meta.Namespace(),
		UID:             meta.UID(),
		ResourceVersion: meta.ResourceVersion(),
	}, nil
}
Пример #5
0
// watchHandler watches w and keeps *resourceVersion up to date.
func (r *Reflector) watchHandler(w watch.Interface, resourceVersion *string, resyncCh <-chan time.Time, stopCh <-chan struct{}) error {
	start := time.Now()
	eventCount := 0

	// Stopping the watcher should be idempotent and if we return from this function there's no way
	// we're coming back in with the same watch interface.
	defer w.Stop()

loop:
	for {
		select {
		case <-stopCh:
			return errorStopRequested
		case <-resyncCh:
			return errorResyncRequested
		case event, ok := <-w.ResultChan():
			if !ok {
				break loop
			}
			if event.Type == watch.Error {
				return apierrs.FromObject(event.Object)
			}
			if e, a := r.expectedType, reflect.TypeOf(event.Object); e != a {
				util.HandleError(fmt.Errorf("%s: expected type %v, but watch event object had type %v", r.name, e, a))
				continue
			}
			meta, err := meta.Accessor(event.Object)
			if err != nil {
				util.HandleError(fmt.Errorf("%s: unable to understand watch event %#v", r.name, event))
				continue
			}
			switch event.Type {
			case watch.Added:
				r.store.Add(event.Object)
			case watch.Modified:
				r.store.Update(event.Object)
			case watch.Deleted:
				// TODO: Will any consumers need access to the "last known
				// state", which is passed in event.Object? If so, may need
				// to change this.
				r.store.Delete(event.Object)
			default:
				util.HandleError(fmt.Errorf("%s: unable to understand watch event %#v", r.name, event))
			}
			*resourceVersion = meta.ResourceVersion()
			r.setLastSyncResourceVersion(*resourceVersion)
			eventCount++
		}
	}

	watchDuration := time.Now().Sub(start)
	if watchDuration < 1*time.Second && eventCount == 0 {
		glog.V(4).Infof("%s: Unexpected watch close - watch lasted less than a second and no items received", r.name)
		return errors.New("very short watch")
	}
	glog.V(4).Infof("%s: Watch close - %v total %v items received", r.name, r.expectedType, eventCount)
	return nil
}
Пример #6
0
// GetReference returns an ObjectReference which refers to the given
// object, or an error if the object doesn't follow the conventions
// that would allow this.
// TODO: should take a meta.Interface see https://github.com/GoogleCloudPlatform/kubernetes/issues/7127
func GetReference(obj runtime.Object) (*ObjectReference, error) {
	if obj == nil {
		return nil, ErrNilObject
	}
	if ref, ok := obj.(*ObjectReference); ok {
		// Don't make a reference to a reference.
		return ref, nil
	}
	meta, err := meta.Accessor(obj)
	if err != nil {
		return nil, err
	}

	// if the object referenced is actually persisted, we can just get kind from meta
	// if we are building an object reference to something not yet persisted, we should fallback to scheme
	kind := meta.Kind()
	if kind == "" {
		_, kind, err = Scheme.ObjectVersionAndKind(obj)
		if err != nil {
			return nil, err
		}
	}

	// if the object referenced is actually persisted, we can also get version from meta
	version := meta.APIVersion()
	if version == "" {
		selfLink := meta.SelfLink()
		if selfLink == "" {
			if ForTesting_ReferencesAllowBlankSelfLinks {
				version = "testing"
			} else {
				return nil, ErrNoSelfLink
			}
		} else {
			selfLinkUrl, err := url.Parse(selfLink)
			if err != nil {
				return nil, err
			}
			// example paths: /<prefix>/<version>/*
			parts := strings.Split(selfLinkUrl.Path, "/")
			if len(parts) < 3 {
				return nil, fmt.Errorf("unexpected self link format: '%v'; got version '%v'", selfLink, version)
			}
			version = parts[2]
		}
	}

	return &ObjectReference{
		Kind:            kind,
		APIVersion:      version,
		Name:            meta.Name(),
		Namespace:       meta.Namespace(),
		UID:             meta.UID(),
		ResourceVersion: meta.ResourceVersion(),
	}, nil
}
// MetaNamespaceKeyFunc is a convenient default KeyFunc which knows how to make
// keys for API objects which implement meta.Interface.
// The key uses the format: <namespace>/<name>
func MetaNamespaceKeyFunc(obj interface{}) (string, error) {
	meta, err := meta.Accessor(obj)
	if err != nil {
		return "", fmt.Errorf("object has no meta: %v", err)
	}
	if len(meta.Namespace()) > 0 {
		return meta.Namespace() + "/" + meta.Name(), nil
	}
	return meta.Name(), nil
}
Пример #8
0
func fuzzInternalObject(t *testing.T, forVersion string, item runtime.Object, seed int64) runtime.Object {
	fuzzerFor(t, forVersion, rand.NewSource(seed)).Fuzz(item)

	j, err := meta.Accessor(item)
	if err != nil {
		t.Fatalf("Unexpected error %v for %#v", err, item)
	}
	j.SetKind("")
	j.SetAPIVersion("")

	return item
}
Пример #9
0
// MetaNamespaceKeyFunc is a convenient default KeyFunc which knows how to make
// keys for API objects which implement meta.Interface.
// The key uses the format <namespace>/<name> unless <namespace> is empty, then
// it's just <name>.
//
// TODO: replace key-as-string with a key-as-struct so that this
// packing/unpacking won't be necessary.
func MetaNamespaceKeyFunc(obj interface{}) (string, error) {
	if key, ok := obj.(ExplicitKey); ok {
		return string(key), nil
	}
	meta, err := meta.Accessor(obj)
	if err != nil {
		return "", fmt.Errorf("object has no meta: %v", err)
	}
	if len(meta.Namespace()) > 0 {
		return meta.Namespace() + "/" + meta.Name(), nil
	}
	return meta.Name(), nil
}
Пример #10
0
// syncWith replaces the store's items with the given list.
func (r *Reflector) syncWith(items []runtime.Object) error {
	found := map[string]interface{}{}
	for _, item := range items {
		meta, err := meta.Accessor(item)
		if err != nil {
			return fmt.Errorf("unexpected item in list: %v", err)
		}
		found[meta.Name()] = item
	}

	r.store.Replace(found)
	return nil
}
Пример #11
0
// watchHandler watches w and keeps *resourceVersion up to date.
func (r *Reflector) watchHandler(w watch.Interface, resourceVersion *string, exitWatch <-chan time.Time) error {
	start := time.Now()
	eventCount := 0
loop:
	for {
		select {
		case <-exitWatch:
			w.Stop()
			return errorResyncRequested
		case event, ok := <-w.ResultChan():
			if !ok {
				break loop
			}
			if event.Type == watch.Error {
				return apierrs.FromObject(event.Object)
			}
			if e, a := r.expectedType, reflect.TypeOf(event.Object); e != a {
				glog.Errorf("expected type %v, but watch event object had type %v", e, a)
				continue
			}
			meta, err := meta.Accessor(event.Object)
			if err != nil {
				glog.Errorf("unable to understand watch event %#v", event)
				continue
			}
			switch event.Type {
			case watch.Added:
				r.store.Add(event.Object)
			case watch.Modified:
				r.store.Update(event.Object)
			case watch.Deleted:
				// TODO: Will any consumers need access to the "last known
				// state", which is passed in event.Object? If so, may need
				// to change this.
				r.store.Delete(event.Object)
			default:
				glog.Errorf("unable to understand watch event %#v", event)
			}
			*resourceVersion = meta.ResourceVersion()
			eventCount++
		}
	}

	watchDuration := time.Now().Sub(start)
	if watchDuration < 1*time.Second && eventCount == 0 {
		glog.V(4).Infof("Unexpected watch close - watch lasted less than a second and no items received")
		return errors.New("very short watch")
	}
	glog.V(4).Infof("Watch close - %v total %v items received", r.expectedType, eventCount)
	return nil
}
Пример #12
0
// ExtractFieldPathAsString extracts the field from the given object
// and returns it as a string.  The object must be a pointer to an
// API type.
//
// Currently, this API is limited to supporting the fieldpaths:
//
// 1.  metadata.name - The name of an API object
// 2.  metadata.namespace - The namespace of an API object
func ExtractFieldPathAsString(obj interface{}, fieldPath string) (string, error) {
	accessor, err := meta.Accessor(obj)
	if err != nil {
		return "", nil
	}

	switch fieldPath {
	case "metadata.name":
		return accessor.Name(), nil
	case "metadata.namespace":
		return accessor.Namespace(), nil
	}

	return "", fmt.Errorf("Unsupported fieldPath: %v", fieldPath)
}
Пример #13
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)
			}
			return
		}
		if err := r.watchHandler(w, &resourceVersion, resyncCh, stopCh); err != nil {
			if err != errorResyncRequested {
				glog.Errorf("watch of %v ended with: %v", r.expectedType, err)
			}
			return
		}
	}
}
Пример #14
0
func (r *Reflector) listAndWatch() {
	var resourceVersion string

	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
	}
	err = r.syncWith(items)
	if err != nil {
		glog.Errorf("Unable to sync list result: %v", err)
		return
	}

	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)
			}
			return
		}
		if err := r.watchHandler(w, &resourceVersion); err != nil {
			glog.Errorf("watch of %v ended with error: %v", r.expectedType, err)
			return
		}
	}
}
Пример #15
0
func TestTypes(t *testing.T) {
	for kind := range api.Scheme.KnownTypes("") {
		// Try a few times, since runTest uses random values.
		for i := 0; i < *fuzzIters; i++ {
			item, err := api.Scheme.New("", kind)
			if err != nil {
				t.Errorf("Couldn't make a %v? %v", kind, err)
				continue
			}
			if _, err := meta.Accessor(item); err != nil {
				t.Logf("%s is not a TypeMeta and cannot be round tripped: %v", kind, err)
				continue
			}
			runTest(t, v1beta1.Codec, item)
			runTest(t, v1beta2.Codec, item)
			runTest(t, api.Codec, item)
		}
	}
}
Пример #16
0
func stripNamespace(obj runtime.Object) {
	// Remove namespace from the item
	if itemMeta, err := meta.Accessor(obj); err == nil {
		itemMeta.SetNamespace("")
		return
	}
	// TODO: allow meta.Accessor to handle runtime.Unstructured
	if unstruct, ok := obj.(*runtime.Unstructured); ok && unstruct.Object != nil {
		if obj, ok := unstruct.Object["metadata"]; ok {
			if m, ok := obj.(map[string]interface{}); ok {
				if _, ok := m["namespace"]; ok {
					m["namespace"] = ""
				}
			}
			return
		}
		if _, ok := unstruct.Object["namespace"]; ok {
			unstruct.Object["namespace"] = ""
			return
		}
	}
}
Пример #17
0
// GetReference returns an ObjectReference which refers to the given
// object, or an error if the object doesn't follow the conventions
// that would allow this.
func GetReference(obj runtime.Object) (*ObjectReference, error) {
	if obj == nil {
		return nil, ErrNilObject
	}
	if ref, ok := obj.(*ObjectReference); ok {
		// Don't make a reference to a reference.
		return ref, nil
	}
	meta, err := meta.Accessor(obj)
	if err != nil {
		return nil, err
	}
	_, kind, err := Scheme.ObjectVersionAndKind(obj)
	if err != nil {
		return nil, err
	}
	version := ""
	parsedSelfLink := versionFromSelfLink.FindStringSubmatch(meta.SelfLink())
	if len(parsedSelfLink) < 2 {
		if ForTesting_ReferencesAllowBlankSelfLinks {
			version = "testing"
		} else if meta.SelfLink() == "" {
			return nil, ErrNoSelfLink
		} else {
			return nil, fmt.Errorf("unexpected self link format: '%v'; got version '%v'", meta.SelfLink(), version)
		}
	} else {
		version = parsedSelfLink[1]
	}
	return &ObjectReference{
		Kind:            kind,
		APIVersion:      version,
		Name:            meta.Name(),
		Namespace:       meta.Namespace(),
		UID:             meta.UID(),
		ResourceVersion: meta.ResourceVersion(),
	}, nil
}
Пример #18
0
func runTest(t *testing.T, codec runtime.Codec, source runtime.Object) {
	name := reflect.TypeOf(source).Elem().Name()
	apiObjectFuzzer.Fuzz(source)
	j, err := meta.Accessor(source)
	if err != nil {
		t.Fatalf("Unexpected error %v for %#v", err, source)
	}
	j.SetKind("")
	j.SetAPIVersion("")

	data, err := codec.Encode(source)
	if err != nil {
		t.Errorf("%v: %v (%#v)", name, err, source)
		return
	}

	obj2, err := codec.Decode(data)
	if err != nil {
		t.Errorf("%v: %v", name, err)
		return
	} else {
		if !reflect.DeepEqual(source, obj2) {
			t.Errorf("1: %v: diff: %v\nCodec: %v\nData: %s\nSource: %#v", name, util.ObjectDiff(source, obj2), codec, string(data), source)
			return
		}
	}
	obj3 := reflect.New(reflect.TypeOf(source).Elem()).Interface().(runtime.Object)
	err = codec.DecodeInto(data, obj3)
	if err != nil {
		t.Errorf("2: %v: %v", name, err)
		return
	} else {
		if !reflect.DeepEqual(source, obj3) {
			t.Errorf("3: %v: diff: %v\nCodec: %v", name, util.ObjectDiff(source, obj3), codec)
			return
		}
	}
}
Пример #19
0
func (r *Reflector) listAndWatch() {
	var resourceVersion string

	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
	}
	err = r.syncWith(items)
	if err != nil {
		glog.Errorf("Unable to sync list result: %v", err)
		return
	}

	for {
		w, err := r.listerWatcher.Watch(resourceVersion)
		if err != nil {
			glog.Errorf("failed to watch %v: %v", r.expectedType, err)
			return
		}
		if err := r.watchHandler(w, &resourceVersion); err != nil {
			glog.Errorf("watch of %v ended with error: %v", r.expectedType, err)
			return
		}
	}
}
Пример #20
0
func TestRoundTripTypes(t *testing.T) {
	// api.Scheme.Log(t)
	// defer api.Scheme.Log(nil)

	for kind := range api.Scheme.KnownTypes("") {
		if nonRoundTrippableTypes.Has(kind) {
			continue
		}
		// Try a few times, since runTest uses random values.
		for i := 0; i < *fuzzIters; i++ {
			item, err := api.Scheme.New("", kind)
			if err != nil {
				t.Fatalf("Couldn't make a %v? %v", kind, err)
			}
			if _, err := meta.Accessor(item); err != nil {
				t.Fatalf("%q is not a TypeMeta and cannot be tested - add it to nonRoundTrippableTypes: %v", kind, err)
			}
			roundTripSame(t, item)
			if !nonInternalRoundTrippableTypes.Has(kind) {
				roundTrip(t, api.Codec, fuzzInternalObject(t, "", item, rand.Int63()))
			}
		}
	}
}
Пример #21
0
func TestAddConfigLabels(t *testing.T) {
	var nilLabels map[string]string

	testCases := []struct {
		obj            runtime.Object
		addLabels      map[string]string
		err            bool
		expectedLabels map[string]string
	}{
		{ // [0] Test nil + nil => nil
			obj:            &kapi.Pod{},
			addLabels:      nilLabels,
			err:            false,
			expectedLabels: nilLabels,
		},
		{ // [1] Test nil + empty labels => empty labels
			obj:            &kapi.Pod{},
			addLabels:      map[string]string{},
			err:            false,
			expectedLabels: map[string]string{},
		},
		{ // [2] Test obj.Labels + nil => obj.Labels
			obj: &kapi.Pod{
				ObjectMeta: kapi.ObjectMeta{Labels: map[string]string{"foo": "bar"}},
			},
			addLabels:      nilLabels,
			err:            false,
			expectedLabels: map[string]string{"foo": "bar"},
		},
		{ // [3] Test obj.Labels + empty labels => obj.Labels
			obj: &kapi.Pod{
				ObjectMeta: kapi.ObjectMeta{Labels: map[string]string{"foo": "bar"}},
			},
			addLabels:      map[string]string{},
			err:            false,
			expectedLabels: map[string]string{"foo": "bar"},
		},
		{ // [4] Test nil + addLabels => addLabels
			obj:            &kapi.Pod{},
			addLabels:      map[string]string{"foo": "bar"},
			err:            false,
			expectedLabels: map[string]string{"foo": "bar"},
		},
		{ // [5] Test obj.labels + addLabels => expectedLabels
			obj: &kapi.Service{
				ObjectMeta: kapi.ObjectMeta{Labels: map[string]string{"baz": ""}},
			},
			addLabels:      map[string]string{"foo": "bar"},
			err:            false,
			expectedLabels: map[string]string{"foo": "bar", "baz": ""},
		},
		{ // [6] Test conflicting keys with the same value
			obj: &kapi.Service{
				ObjectMeta: kapi.ObjectMeta{Labels: map[string]string{"foo": "same value"}},
			},
			addLabels:      map[string]string{"foo": "same value"},
			err:            false,
			expectedLabels: map[string]string{"foo": "same value"},
		},
		{ // [7] Test conflicting keys with a different value
			obj: &kapi.Service{
				ObjectMeta: kapi.ObjectMeta{Labels: map[string]string{"foo": "first value"}},
			},
			addLabels:      map[string]string{"foo": "second value"},
			err:            true,
			expectedLabels: map[string]string{"foo": "first value"},
		},
		{ // [8] Test conflicting keys with the same value in ReplicationController nested labels
			obj: &kapi.ReplicationController{
				ObjectMeta: kapi.ObjectMeta{
					Labels: map[string]string{"foo": "same value"},
				},
				Spec: kapi.ReplicationControllerSpec{
					Template: &kapi.PodTemplateSpec{
						ObjectMeta: kapi.ObjectMeta{
							Labels: map[string]string{},
						},
					},
				},
			},
			addLabels:      map[string]string{"foo": "same value"},
			err:            false,
			expectedLabels: map[string]string{"foo": "same value"},
		},
		{ // [9] Test adding labels to a DeploymentConfig object
			obj: &deployapi.DeploymentConfig{
				ObjectMeta: kapi.ObjectMeta{
					Labels: map[string]string{"foo": "first value"},
				},
				Template: deployapi.DeploymentTemplate{
					ControllerTemplate: kapi.ReplicationControllerSpec{
						Template: &kapi.PodTemplateSpec{
							ObjectMeta: kapi.ObjectMeta{
								Labels: map[string]string{},
							},
						},
					},
				},
			},
			addLabels:      map[string]string{"bar": "second value"},
			err:            false,
			expectedLabels: map[string]string{"foo": "first value", "bar": "second value"},
		},
		{ // [10] Test unknown Generic Object with Labels field
			obj: &FakeLabelsResource{
				ObjectMeta: kapi.ObjectMeta{Labels: map[string]string{"baz": ""}},
			},
			addLabels:      map[string]string{"foo": "bar"},
			err:            false,
			expectedLabels: map[string]string{"foo": "bar", "baz": ""},
		},
	}

	for i, test := range testCases {
		err := AddObjectLabels(test.obj, test.addLabels)
		if err != nil && !test.err {
			t.Errorf("Unexpected error while setting labels on testCase[%v]: %v.", i, err)
		} else if err == nil && test.err {
			t.Errorf("Unexpected non-error while setting labels on testCase[%v].", i)
		}

		accessor, err := kmeta.Accessor(test.obj)
		if err != nil {
			t.Error(err)
		}
		metaLabels := accessor.Labels()
		if e, a := test.expectedLabels, metaLabels; !reflect.DeepEqual(e, a) {
			t.Errorf("Unexpected labels on testCase[%v]. Expected: %#v, got: %#v.", i, e, a)
		}

		// must not add any new nested labels
		switch objType := test.obj.(type) {
		case *kapi.ReplicationController:
			if e, a := map[string]string{}, objType.Spec.Template.Labels; !reflect.DeepEqual(e, a) {
				t.Errorf("Unexpected labels on testCase[%v]. Expected: %#v, got: %#v.", i, e, a)
			}
		case *deployapi.DeploymentConfig:
			if e, a := map[string]string{}, objType.Template.ControllerTemplate.Template.Labels; !reflect.DeepEqual(e, a) {
				t.Errorf("Unexpected labels on testCase[%v]. Expected: %#v, got: %#v.", i, e, a)
			}
		}
	}
}
Пример #22
0
// AddObjectLabels adds new label(s) to a single runtime.Object
func AddObjectLabels(obj runtime.Object, labels labels.Set) error {
	if labels == nil {
		return nil
	}

	accessor, err := kmeta.Accessor(obj)

	if err != nil {
		if _, ok := obj.(*runtime.Unstructured); !ok {
			// error out if it's not possible to get an accessor and it's also not an unstructured object
			return err
		}
	} else {
		metaLabels := accessor.Labels()
		if metaLabels == nil {
			metaLabels = make(map[string]string)
		}

		if err := MergeInto(metaLabels, labels, ErrorOnDifferentDstKeyValue); err != nil {
			return fmt.Errorf("unable to add labels to Template.%s: %v", accessor.Kind(), err)
		}
		accessor.SetLabels(metaLabels)

		return nil
	}

	// handle unstructured object
	// TODO: allow meta.Accessor to handle runtime.Unstructured
	if unstruct, ok := obj.(*runtime.Unstructured); ok && unstruct.Object != nil {
		// the presence of "metadata" is sufficient for us to apply the rules for Kube-like
		// objects.
		// TODO: add swagger detection to allow this to happen more effectively
		if obj, ok := unstruct.Object["metadata"]; ok {
			if m, ok := obj.(map[string]interface{}); ok {

				existing := make(map[string]string)
				if l, ok := m["labels"]; ok {
					if found, ok := extractLabels(l); ok {
						existing = found
					}
				}
				if err := MergeInto(existing, labels, OverwriteExistingDstKey); err != nil {
					return err
				}
				m["labels"] = mapToGeneric(existing)
			}
			return nil
		}

		// only attempt to set root labels if a root object called labels exists
		// TODO: add swagger detection to allow this to happen more effectively
		if obj, ok := unstruct.Object["labels"]; ok {
			existing := make(map[string]string)
			if found, ok := extractLabels(obj); ok {
				existing = found
			}
			if err := MergeInto(existing, labels, OverwriteExistingDstKey); err != nil {
				return err
			}
			unstruct.Object["labels"] = mapToGeneric(existing)
			return nil
		}
	}

	return nil
}
Пример #23
0
func executeAPIRequest(ctx api.Context, method string, c *client.Client) bool {
	storage, path, hasSuffix := storagePathFromArg(flag.Arg(1))
	validStorage := checkStorage(storage)
	verb := ""
	setBody := false
	var version string

	printer := getPrinter()

	switch method {
	case "get":
		verb = "GET"
		if !validStorage || !hasSuffix {
			glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>[/<id>]", method, prettyWireStorage())
		}
	case "list":
		verb = "GET"
		if !validStorage || hasSuffix {
			glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>", method, prettyWireStorage())
		}
	case "delete":
		verb = "DELETE"
		if !validStorage || !hasSuffix {
			glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>/<id>", method, prettyWireStorage())
		}
	case "create":
		verb = "POST"
		setBody = true
		if !validStorage || hasSuffix {
			glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>", method, prettyWireStorage())
		}
	case "update":
		obj, err := c.Verb("GET").Namespace(api.Namespace(ctx)).Suffix(path).Do().Get()
		if err != nil {
			glog.Fatalf("error obtaining resource version for update: %v", err)
		}
		meta, err := meta.Accessor(obj)
		if err != nil {
			glog.Fatalf("error finding json base for update: %v", err)
		}
		version = meta.ResourceVersion()
		verb = "PUT"
		setBody = true
		if !validStorage || !hasSuffix {
			glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>/<id>", method, prettyWireStorage())
		}
	case "print":
		data := readConfig(storage, c)
		obj, err := latest.Codec.Decode(data)
		if err != nil {
			glog.Fatalf("error setting resource version: %v", err)
		}
		printer.PrintObj(obj, os.Stdout)
		return true
	default:
		return false
	}

	r := c.Verb(verb).Namespace(api.Namespace(ctx)).Suffix(path)
	if len(*selector) > 0 {
		r.ParseSelectorParam("labels", *selector)
	}
	if len(*fieldSelector) > 0 {
		r.ParseSelectorParam("fields", *fieldSelector)
	}
	if setBody {
		if len(version) > 0 {
			data := readConfig(storage, c)
			obj, err := latest.Codec.Decode(data)
			if err != nil {
				glog.Fatalf("error setting resource version: %v", err)
			}
			jsonBase, err := meta.Accessor(obj)
			if err != nil {
				glog.Fatalf("error setting resource version: %v", err)
			}
			jsonBase.SetResourceVersion(version)
			data, err = c.RESTClient.Codec.Encode(obj)
			if err != nil {
				glog.Fatalf("error setting resource version: %v", err)
			}
			r.Body(data)
		} else {
			r.Body(readConfig(storage, c))
		}
	}
	result := r.Do()
	obj, err := result.Get()
	if err != nil {
		glog.Fatalf("Got request error: %v\n", err)
		return false
	}

	if err = printer.PrintObj(obj, os.Stdout); err != nil {
		body, _ := result.Raw()
		glog.Fatalf("Failed to print: %v\nRaw received object:\n%#v\n\nBody received: %v", err, obj, string(body))
	}
	fmt.Print("\n")

	return true
}