Golang meta.NewAccessor函数代码示例

// Admit admits resources into cluster that do not violate any defined LimitRange in the namespace
func (l *limitRanger) Admit(a admission.Attributes) (err error) {

	// Ignore all calls to subresources
	if a.GetSubresource() != "" {
		return nil
	}

	obj := a.GetObject()
	name := "Unknown"
	if obj != nil {
		name, _ = meta.NewAccessor().Name(obj)
		if len(name) == 0 {
			name, _ = meta.NewAccessor().GenerateName(obj)
		}
	}

	key := &api.LimitRange{
		ObjectMeta: api.ObjectMeta{
			Namespace: a.GetNamespace(),
			Name:      "",
		},
	}
	items, err := l.indexer.Index("namespace", key)
	if err != nil {
		return admission.NewForbidden(a, fmt.Errorf("Unable to %s %v at this time because there was an error enforcing limit ranges", a.GetOperation(), a.GetResource()))
	}

	// if there are no items held in our indexer, check our live-lookup LRU, if that misses, do the live lookup to prime it.
	if len(items) == 0 {
		lruItemObj, ok := l.liveLookupCache.Get(a.GetNamespace())
		if !ok || lruItemObj.(liveLookupEntry).expiry.Before(time.Now()) {
			liveList, err := l.client.Core().LimitRanges(a.GetNamespace()).List(api.ListOptions{})
			if err != nil {
				return admission.NewForbidden(a, err)
			}
			newEntry := liveLookupEntry{expiry: time.Now().Add(l.liveTTL)}
			for i := range liveList.Items {
				newEntry.items = append(newEntry.items, &liveList.Items[i])
			}
			l.liveLookupCache.Add(a.GetNamespace(), newEntry)
			lruItemObj = newEntry
		}
		lruEntry := lruItemObj.(liveLookupEntry)

		for i := range lruEntry.items {
			items = append(items, lruEntry.items[i])
		}

	}

	// ensure it meets each prescribed min/max
	for i := range items {
		limitRange := items[i].(*api.LimitRange)
		err = l.limitFunc(limitRange, a.GetResource().Resource, a.GetObject())
		if err != nil {
			return admission.NewForbidden(a, err)
		}
	}
	return nil
}

func newExternalScheme() (*runtime.Scheme, meta.RESTMapper, runtime.Codec) {
	scheme := runtime.NewScheme()
	scheme.AddKnownTypeWithName(internalGV.WithKind("Type"), &internalType{})
	scheme.AddKnownTypeWithName(unlikelyGV.WithKind("Type"), &externalType{})
	//This tests that kubectl will not confuse the external scheme with the internal scheme, even when they accidentally have versions of the same name.
	scheme.AddKnownTypeWithName(validVersionGV.WithKind("Type"), &ExternalType2{})

	codecs := serializer.NewCodecFactory(scheme)
	codec := codecs.LegacyCodec(unlikelyGV)
	mapper := meta.NewDefaultRESTMapper([]unversioned.GroupVersion{unlikelyGV, validVersionGV}, func(version unversioned.GroupVersion) (*meta.VersionInterfaces, error) {
		return &meta.VersionInterfaces{
			ObjectConvertor:  scheme,
			MetadataAccessor: meta.NewAccessor(),
		}, versionErrIfFalse(version == validVersionGV || version == unlikelyGV)
	})
	for _, gv := range []unversioned.GroupVersion{unlikelyGV, validVersionGV} {
		for kind := range scheme.KnownTypes(gv) {
			gvk := gv.WithKind(kind)

			scope := meta.RESTScopeNamespace
			mapper.Add(gvk, scope)
		}
	}

	return scheme, mapper, codec
}

func TestBulkActionCompact(t *testing.T) {
	bt := &bulkTester{
		mapping: &meta.RESTMapping{
			MetadataAccessor: meta.NewAccessor(),
		},
	}
	out, err := &bytes.Buffer{}, &bytes.Buffer{}
	bulk := Bulk{Mapper: bt, Op: bt.Record}
	b := &BulkAction{Bulk: bulk, Output: "", Out: out, ErrOut: err}
	b.Compact()
	b2 := b.WithMessage("test1", "test2")

	in := &kapi.Pod{ObjectMeta: kapi.ObjectMeta{Name: "obj1"}}
	if errs := b2.Run(&kapi.List{Items: []runtime.Object{in}}, "test_namespace"); len(errs) != 0 {
		t.Fatal(errs)
	}
	if !reflect.DeepEqual(bt.infos, []runtime.Object{in}) {
		t.Fatalf("unexpected: %#v", bt.infos)
	}
	if !reflect.DeepEqual(bt.recorded, []runtime.Object{in}) {
		t.Fatalf("unexpected: %#v", bt.recorded)
	}
	if out.String() != `` {
		t.Fatalf("unexpected: %s", out.String())
	}
	if err.String() != `` {
		t.Fatalf("unexpected: %s", err.String())
	}
}

func describerMap(c *client.Client, kclient kclient.Interface, host string) map[unversioned.GroupKind]kctl.Describer {
	m := map[unversioned.GroupKind]kctl.Describer{
		buildapi.Kind("Build"):                        &BuildDescriber{c, kclient},
		buildapi.Kind("BuildConfig"):                  &BuildConfigDescriber{c, host},
		deployapi.Kind("DeploymentConfig"):            &DeploymentConfigDescriber{c, kclient, nil},
		authorizationapi.Kind("Identity"):             &IdentityDescriber{c},
		imageapi.Kind("Image"):                        &ImageDescriber{c},
		imageapi.Kind("ImageStream"):                  &ImageStreamDescriber{c},
		imageapi.Kind("ImageStreamTag"):               &ImageStreamTagDescriber{c},
		imageapi.Kind("ImageStreamImage"):             &ImageStreamImageDescriber{c},
		routeapi.Kind("Route"):                        &RouteDescriber{c, kclient},
		projectapi.Kind("Project"):                    &ProjectDescriber{c, kclient},
		templateapi.Kind("Template"):                  &TemplateDescriber{c, meta.NewAccessor(), kapi.Scheme, nil},
		authorizationapi.Kind("Policy"):               &PolicyDescriber{c},
		authorizationapi.Kind("PolicyBinding"):        &PolicyBindingDescriber{c},
		authorizationapi.Kind("RoleBinding"):          &RoleBindingDescriber{c},
		authorizationapi.Kind("Role"):                 &RoleDescriber{c},
		authorizationapi.Kind("ClusterPolicy"):        &ClusterPolicyDescriber{c},
		authorizationapi.Kind("ClusterPolicyBinding"): &ClusterPolicyBindingDescriber{c},
		authorizationapi.Kind("ClusterRoleBinding"):   &ClusterRoleBindingDescriber{c},
		authorizationapi.Kind("ClusterRole"):          &ClusterRoleDescriber{c},
		oauthapi.Kind("OAuthAccessToken"):             &OAuthAccessTokenDescriber{c},
		userapi.Kind("User"):                          &UserDescriber{c},
		userapi.Kind("Group"):                         &GroupDescriber{c.Groups()},
		userapi.Kind("UserIdentityMapping"):           &UserIdentityMappingDescriber{c},
		quotaapi.Kind("ClusterResourceQuota"):         &ClusterQuotaDescriber{c},
		quotaapi.Kind("AppliedClusterResourceQuota"):  &AppliedClusterQuotaDescriber{c},
	}
	return m
}

func processData(jsonData []byte, format string, templateName string, ns string, c *k8sclient.Client, oc *oclient.Client, pv bool) {
	// lets check if its an RC / ReplicaSet or something
	o, groupVersionKind, err := api.Codecs.UniversalDeserializer().Decode(jsonData, nil, nil)
	if err != nil {
		printResult(templateName, Failure, err)
	} else {
		kind := groupVersionKind.Kind
		//util.Infof("Processing resource of kind: %s version: %s\n", kind, groupVersionKind.Version)
		if len(kind) <= 0 {
			printResult(templateName, Failure, fmt.Errorf("Could not find kind from json %s", string(jsonData)))
		} else {
			accessor := meta.NewAccessor()
			ons, err := accessor.Namespace(o)
			if err == nil && len(ons) > 0 {
				util.Infof("Found namespace on kind %s of %s", kind, ons)
				ns = ons

				err := ensureNamespaceExists(c, oc, ns)
				if err != nil {
					printErr(err)
				}
			}
			if !pv {
				if kind == "PersistentVolumeClaim" {
					return
				}
				jsonData = removePVCVolumes(jsonData, format, templateName, kind)
			}
			err = processResource(c, jsonData, ns, kind)
			if err != nil {
				printResult(templateName, Failure, err)
			}
		}
	}
}

func newExternalScheme() (*runtime.Scheme, meta.RESTMapper, runtime.Codec) {
	scheme := runtime.NewScheme()
	scheme.AddKnownTypeWithName("", "Type", &internalType{})
	scheme.AddKnownTypeWithName("unlikelyversion", "Type", &externalType{})
	//This tests that kubectl will not confuse the external scheme with the internal scheme, even when they accidentally have versions of the same name.
	scheme.AddKnownTypeWithName(testapi.Version(), "Type", &ExternalType2{})

	codec := runtime.CodecFor(scheme, "unlikelyversion")
	validVersion := testapi.Version()
	mapper := meta.NewDefaultRESTMapper("apitest", []string{"unlikelyversion", validVersion}, func(version string) (*meta.VersionInterfaces, error) {
		return &meta.VersionInterfaces{
			Codec:            runtime.CodecFor(scheme, version),
			ObjectConvertor:  scheme,
			MetadataAccessor: meta.NewAccessor(),
		}, versionErrIfFalse(version == validVersion || version == "unlikelyversion")
	})
	for _, version := range []string{"unlikelyversion", validVersion} {
		for kind := range scheme.KnownTypes(version) {
			mixedCase := false
			scope := meta.RESTScopeNamespace
			mapper.Add(scope, kind, version, mixedCase)
		}
	}

	return scheme, mapper, codec
}

func describerMap(c *client.Client, kclient kclient.Interface, host string) map[string]kctl.Describer {
	m := map[string]kctl.Describer{
		"Build":                &BuildDescriber{c, kclient},
		"BuildConfig":          &BuildConfigDescriber{c, host},
		"BuildLog":             &BuildLogDescriber{c},
		"DeploymentConfig":     NewDeploymentConfigDescriber(c, kclient),
		"Identity":             &IdentityDescriber{c},
		"Image":                &ImageDescriber{c},
		"ImageStream":          &ImageStreamDescriber{c},
		"ImageStreamTag":       &ImageStreamTagDescriber{c},
		"ImageStreamImage":     &ImageStreamImageDescriber{c},
		"Route":                &RouteDescriber{c},
		"Project":              &ProjectDescriber{c, kclient},
		"Template":             &TemplateDescriber{c, meta.NewAccessor(), kapi.Scheme, nil},
		"Policy":               &PolicyDescriber{c},
		"PolicyBinding":        &PolicyBindingDescriber{c},
		"RoleBinding":          &RoleBindingDescriber{c},
		"Role":                 &RoleDescriber{c},
		"ClusterPolicy":        &ClusterPolicyDescriber{c},
		"ClusterPolicyBinding": &ClusterPolicyBindingDescriber{c},
		"ClusterRoleBinding":   &ClusterRoleBindingDescriber{c},
		"ClusterRole":          &ClusterRoleDescriber{c},
		"User":                 &UserDescriber{c},
		"Group":                &GroupDescriber{c.Groups()},
		"UserIdentityMapping":  &UserIdentityMappingDescriber{c},
	}
	return m
}

// Admit admits resources into cluster that do not violate any defined LimitRange in the namespace
func (l *limitRanger) Admit(a admission.Attributes) (err error) {

	// Ignore all calls to subresources
	if a.GetSubresource() != "" {
		return nil
	}

	obj := a.GetObject()
	resource := a.GetResource()
	name := "Unknown"
	if obj != nil {
		name, _ = meta.NewAccessor().Name(obj)
		if len(name) == 0 {
			name, _ = meta.NewAccessor().GenerateName(obj)
		}
	}

	key := &api.LimitRange{
		ObjectMeta: api.ObjectMeta{
			Namespace: a.GetNamespace(),
			Name:      "",
		},
	}
	items, err := l.indexer.Index("namespace", key)
	if err != nil {
		return admission.NewForbidden(a, fmt.Errorf("Unable to %s %s at this time because there was an error enforcing limit ranges", a.GetOperation(), resource))
	}
	if len(items) == 0 {
		return nil
	}

	// ensure it meets each prescribed min/max
	for i := range items {
		limitRange := items[i].(*api.LimitRange)
		err = l.limitFunc(limitRange, a.GetResource(), a.GetObject())
		if err != nil {
			return admission.NewForbidden(a, err)
		}
	}
	return nil
}

func TestResourceVersionerOfAPI(t *testing.T) {
	type T struct {
		runtime.Object
		Expected string
	}
	testCases := map[string]T{
		"empty api object":                   {&MyAPIObject{}, ""},
		"api object with version":            {&MyAPIObject{TypeMeta: InternalTypeMeta{ResourceVersion: "1"}}, "1"},
		"pointer to api object with version": {&MyAPIObject{TypeMeta: InternalTypeMeta{ResourceVersion: "1"}}, "1"},
	}
	versioning := meta.NewAccessor()
	for key, testCase := range testCases {
		actual, err := versioning.ResourceVersion(testCase.Object)
		if err != nil {
			t.Errorf("%s: unexpected error %#v", key, err)
		}
		if actual != testCase.Expected {
			t.Errorf("%s: expected %v, got %v", key, testCase.Expected, actual)
		}
	}

	failingCases := map[string]struct {
		runtime.Object
		Expected string
	}{
		"not a valid object to try": {&MyIncorrectlyMarkedAsAPIObject{}, "1"},
	}
	for key, testCase := range failingCases {
		_, err := versioning.ResourceVersion(testCase.Object)
		if err == nil {
			t.Errorf("%s: expected error, got nil", key)
		}
	}

	setCases := map[string]struct {
		runtime.Object
		Expected string
	}{
		"pointer to api object with version": {&MyAPIObject{TypeMeta: InternalTypeMeta{ResourceVersion: "1"}}, "1"},
	}
	for key, testCase := range setCases {
		if err := versioning.SetResourceVersion(testCase.Object, "5"); err != nil {
			t.Errorf("%s: unexpected error %#v", key, err)
		}
		actual, err := versioning.ResourceVersion(testCase.Object)
		if err != nil {
			t.Errorf("%s: unexpected error %#v", key, err)
		}
		if actual != "5" {
			t.Errorf("%s: expected %v, got %v", key, "5", actual)
		}
	}
}

func makeInterfacesFor(versionList []unversioned.GroupVersion) func(version unversioned.GroupVersion) (*meta.VersionInterfaces, error) {
	accessor := meta.NewAccessor()
	return func(version unversioned.GroupVersion) (*meta.VersionInterfaces, error) {
		for ix := range versionList {
			if versionList[ix].String() == version.String() {
				return &meta.VersionInterfaces{
					ObjectConvertor:  thirdpartyresourcedata.NewThirdPartyObjectConverter(api.Scheme),
					MetadataAccessor: accessor,
				}, nil
			}
		}
		return nil, fmt.Errorf("unsupported storage version: %s (valid: %v)", version, versionList)
	}
}

// Enable enables group versions that are allowed, adds methods to the scheme, etc.
func (gmf *GroupMetaFactory) Enable(m *registered.APIRegistrationManager, scheme *runtime.Scheme) error {
	externalVersions := []schema.GroupVersion{}
	for _, v := range gmf.prioritizedVersionList {
		if !m.IsAllowedVersion(v) {
			continue
		}
		externalVersions = append(externalVersions, v)
		if err := m.EnableVersions(v); err != nil {
			return err
		}
		gmf.VersionArgs[v.Version].AddToScheme(scheme)
	}
	if len(externalVersions) == 0 {
		glog.V(4).Infof("No version is registered for group %v", gmf.GroupArgs.GroupName)
		return nil
	}

	if gmf.GroupArgs.AddInternalObjectsToScheme != nil {
		gmf.GroupArgs.AddInternalObjectsToScheme(scheme)
	}

	preferredExternalVersion := externalVersions[0]
	accessor := meta.NewAccessor()

	groupMeta := &apimachinery.GroupMeta{
		GroupVersion:  preferredExternalVersion,
		GroupVersions: externalVersions,
		SelfLinker:    runtime.SelfLinker(accessor),
	}
	for _, v := range externalVersions {
		gvf := gmf.VersionArgs[v.Version]
		if err := groupMeta.AddVersionInterfaces(
			schema.GroupVersion{Group: gvf.GroupName, Version: gvf.VersionName},
			&meta.VersionInterfaces{
				ObjectConvertor:  scheme,
				MetadataAccessor: accessor,
			},
		); err != nil {
			return err
		}
	}
	groupMeta.InterfacesFor = groupMeta.DefaultInterfacesFor
	groupMeta.RESTMapper = gmf.newRESTMapper(scheme, externalVersions, groupMeta)

	if err := m.RegisterGroup(*groupMeta); err != nil {
		return err
	}
	return nil
}

// registerThirdPartyResources inspects the discovery endpoint to find thirdpartyresources in the discovery doc
// and then registers them with the apimachinery code.  I think this is done so that scheme/codec stuff works,
// but I really don't know.  Feels like this code should go away once kubectl is completely generic for generic
// CRUD
func registerThirdPartyResources(discoveryClient discovery.DiscoveryInterface) error {
	var versions []unversioned.GroupVersion
	var gvks []unversioned.GroupVersionKind
	var err error
	retries := 3
	for i := 0; i < retries; i++ {
		versions, gvks, err = GetThirdPartyGroupVersions(discoveryClient)
		// Retry if we got a NotFound error, because user may delete
		// a thirdparty group when the GetThirdPartyGroupVersions is
		// running.
		if err == nil || !apierrors.IsNotFound(err) {
			break
		}
	}
	if err != nil {
		return err
	}

	groupsMap := map[string][]unversioned.GroupVersion{}
	for _, version := range versions {
		groupsMap[version.Group] = append(groupsMap[version.Group], version)
	}
	for group, versionList := range groupsMap {
		preferredExternalVersion := versionList[0]

		thirdPartyMapper, err := kubectl.NewThirdPartyResourceMapper(versionList, getGroupVersionKinds(gvks, group))
		if err != nil {
			return err
		}

		accessor := meta.NewAccessor()
		groupMeta := apimachinery.GroupMeta{
			GroupVersion:  preferredExternalVersion,
			GroupVersions: versionList,
			RESTMapper:    thirdPartyMapper,
			SelfLinker:    runtime.SelfLinker(accessor),
			InterfacesFor: makeInterfacesFor(versionList),
		}
		if err := registered.RegisterGroup(groupMeta); err != nil {
			return err
		}
		registered.AddThirdPartyAPIGroupVersions(versionList...)
	}

	return nil
}

func TestTypeMetaSelfLinker(t *testing.T) {
	table := map[string]struct {
		obj     runtime.Object
		expect  string
		try     string
		succeed bool
	}{
		"normal": {
			obj:     &MyAPIObject{TypeMeta: InternalTypeMeta{SelfLink: "foobar"}},
			expect:  "foobar",
			try:     "newbar",
			succeed: true,
		},
		"fail": {
			obj:     &MyIncorrectlyMarkedAsAPIObject{},
			succeed: false,
		},
	}

	linker := runtime.SelfLinker(meta.NewAccessor())
	for name, item := range table {
		got, err := linker.SelfLink(item.obj)
		if e, a := item.succeed, err == nil; e != a {
			t.Errorf("%v: expected %v, got %v", name, e, a)
		}
		if e, a := item.expect, got; item.succeed && e != a {
			t.Errorf("%v: expected %v, got %v", name, e, a)
		}

		err = linker.SetSelfLink(item.obj, item.try)
		if e, a := item.succeed, err == nil; e != a {
			t.Errorf("%v: expected %v, got %v", name, e, a)
		}
		if item.succeed {
			got, err := linker.SelfLink(item.obj)
			if err != nil {
				t.Errorf("%v: expected no err, got %v", name, err)
			}
			if e, a := item.try, got; e != a {
				t.Errorf("%v: expected %v, got %v", name, e, a)
			}
		}
	}
}

func TestBulk(t *testing.T) {
	bt := &bulkTester{
		mapping: &meta.RESTMapping{
			MetadataAccessor: meta.NewAccessor(),
		},
	}
	b := Bulk{Mapper: bt, Op: bt.Record}

	in := &kapi.Pod{}
	if errs := b.Run(&kapi.List{Items: []runtime.Object{in}}, "test_namespace"); len(errs) > 0 {
		t.Fatal(errs)
	}
	if !reflect.DeepEqual(bt.infos, []runtime.Object{in}) {
		t.Fatalf("unexpected: %#v", bt.infos)
	}
	if !reflect.DeepEqual(bt.recorded, []runtime.Object{in}) {
		t.Fatalf("unexpected: %#v", bt.recorded)
	}
}

// HasJenkinsService searches the template items and return true if the expected
// Jenkins service is contained in template.
func (t *PipelineTemplate) HasJenkinsService(items *kapi.List) bool {
	accessor := meta.NewAccessor()
	for _, item := range items.Items {
		kind, _, err := kapi.Scheme.ObjectKind(item)
		if err != nil {
			glog.Infof("Error checking Jenkins service kind: %v", err)
			return false
		}
		name, err := accessor.Name(item)
		if err != nil {
			glog.Infof("Error checking Jenkins service name: %v", err)
			return false
		}
		glog.Infof("Jenkins Pipeline template object %q with name %q", name, kind.Kind)
		if name == t.Config.ServiceName && kind.Kind == "Service" {
			return true
		}
	}
	return false
}