291 lines
9.6 KiB
Go
291 lines
9.6 KiB
Go
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/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package runtime_test
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import (
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"encoding/json"
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"reflect"
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"strings"
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"testing"
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"k8s.io/kubernetes/pkg/api/meta"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/runtime/schema"
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"k8s.io/kubernetes/pkg/runtime/serializer"
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"k8s.io/kubernetes/pkg/util/diff"
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)
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type EmbeddedTest struct {
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runtime.TypeMeta
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ID string
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Object runtime.Object
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EmptyObject runtime.Object
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}
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type EmbeddedTestExternal struct {
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runtime.TypeMeta `json:",inline"`
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ID string `json:"id,omitempty"`
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Object runtime.RawExtension `json:"object,omitempty"`
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EmptyObject runtime.RawExtension `json:"emptyObject,omitempty"`
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}
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type ObjectTest struct {
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runtime.TypeMeta
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ID string
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Items []runtime.Object
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}
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type ObjectTestExternal struct {
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runtime.TypeMeta `yaml:",inline" json:",inline"`
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ID string `json:"id,omitempty"`
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Items []runtime.RawExtension `json:"items,omitempty"`
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}
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func (obj *ObjectTest) GetObjectKind() schema.ObjectKind { return &obj.TypeMeta }
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func (obj *ObjectTestExternal) GetObjectKind() schema.ObjectKind { return &obj.TypeMeta }
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func (obj *EmbeddedTest) GetObjectKind() schema.ObjectKind { return &obj.TypeMeta }
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func (obj *EmbeddedTestExternal) GetObjectKind() schema.ObjectKind { return &obj.TypeMeta }
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func TestDecodeEmptyRawExtensionAsObject(t *testing.T) {
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internalGV := schema.GroupVersion{Group: "test.group", Version: runtime.APIVersionInternal}
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externalGV := schema.GroupVersion{Group: "test.group", Version: "v1test"}
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externalGVK := externalGV.WithKind("ObjectTest")
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s := runtime.NewScheme()
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s.AddKnownTypes(internalGV, &ObjectTest{})
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s.AddKnownTypeWithName(externalGVK, &ObjectTestExternal{})
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codec := serializer.NewCodecFactory(s).LegacyCodec(externalGV)
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obj, gvk, err := codec.Decode([]byte(`{"kind":"`+externalGVK.Kind+`","apiVersion":"`+externalGV.String()+`","items":[{}]}`), nil, nil)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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test := obj.(*ObjectTest)
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if unk, ok := test.Items[0].(*runtime.Unknown); !ok || unk.Kind != "" || unk.APIVersion != "" || string(unk.Raw) != "{}" || unk.ContentType != runtime.ContentTypeJSON {
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t.Fatalf("unexpected object: %#v", test.Items[0])
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}
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if *gvk != externalGVK {
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t.Fatalf("unexpected kind: %#v", gvk)
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}
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obj, gvk, err = codec.Decode([]byte(`{"kind":"`+externalGVK.Kind+`","apiVersion":"`+externalGV.String()+`","items":[{"kind":"Other","apiVersion":"v1"}]}`), nil, nil)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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test = obj.(*ObjectTest)
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if unk, ok := test.Items[0].(*runtime.Unknown); !ok || unk.Kind != "" || unk.APIVersion != "" || string(unk.Raw) != `{"kind":"Other","apiVersion":"v1"}` || unk.ContentType != runtime.ContentTypeJSON {
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t.Fatalf("unexpected object: %#v", test.Items[0])
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}
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if *gvk != externalGVK {
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t.Fatalf("unexpected kind: %#v", gvk)
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}
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}
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func TestArrayOfRuntimeObject(t *testing.T) {
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internalGV := schema.GroupVersion{Group: "test.group", Version: runtime.APIVersionInternal}
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externalGV := schema.GroupVersion{Group: "test.group", Version: "v1test"}
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s := runtime.NewScheme()
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s.AddKnownTypes(internalGV, &EmbeddedTest{})
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s.AddKnownTypeWithName(externalGV.WithKind("EmbeddedTest"), &EmbeddedTestExternal{})
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s.AddKnownTypes(internalGV, &ObjectTest{})
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s.AddKnownTypeWithName(externalGV.WithKind("ObjectTest"), &ObjectTestExternal{})
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codec := serializer.NewCodecFactory(s).LegacyCodec(externalGV)
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innerItems := []runtime.Object{
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&EmbeddedTest{ID: "baz"},
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}
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items := []runtime.Object{
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&EmbeddedTest{ID: "foo"},
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&EmbeddedTest{ID: "bar"},
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// TODO: until YAML is removed, this JSON must be in ascending key order to ensure consistent roundtrip serialization
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&runtime.Unknown{
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Raw: []byte(`{"apiVersion":"unknown.group/unknown","foo":"bar","kind":"OtherTest"}`),
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ContentType: runtime.ContentTypeJSON,
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},
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&ObjectTest{
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Items: runtime.NewEncodableList(codec, innerItems),
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},
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}
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internal := &ObjectTest{
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Items: runtime.NewEncodableList(codec, items),
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}
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wire, err := runtime.Encode(codec, internal)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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t.Logf("Wire format is:\n%s\n", string(wire))
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obj := &ObjectTestExternal{}
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if err := json.Unmarshal(wire, obj); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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t.Logf("exact wire is: %s", string(obj.Items[0].Raw))
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items[3] = &ObjectTest{Items: innerItems}
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internal.Items = items
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decoded, err := runtime.Decode(codec, wire)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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list, err := meta.ExtractList(decoded)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if errs := runtime.DecodeList(list, codec); len(errs) > 0 {
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t.Fatalf("unexpected error: %v", errs)
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}
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list2, err := meta.ExtractList(list[3])
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if errs := runtime.DecodeList(list2, codec); len(errs) > 0 {
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t.Fatalf("unexpected error: %v", errs)
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}
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if err := meta.SetList(list[3], list2); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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// we want DecodeList to set type meta if possible, even on runtime.Unknown objects
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internal.Items[2].(*runtime.Unknown).TypeMeta = runtime.TypeMeta{Kind: "OtherTest", APIVersion: "unknown.group/unknown"}
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if e, a := internal.Items, list; !reflect.DeepEqual(e, a) {
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t.Errorf("mismatched decoded: %s", diff.ObjectGoPrintSideBySide(e, a))
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}
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}
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func TestNestedObject(t *testing.T) {
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internalGV := schema.GroupVersion{Group: "test.group", Version: runtime.APIVersionInternal}
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externalGV := schema.GroupVersion{Group: "test.group", Version: "v1test"}
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embeddedTestExternalGVK := externalGV.WithKind("EmbeddedTest")
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s := runtime.NewScheme()
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s.AddKnownTypes(internalGV, &EmbeddedTest{})
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s.AddKnownTypeWithName(embeddedTestExternalGVK, &EmbeddedTestExternal{})
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codec := serializer.NewCodecFactory(s).LegacyCodec(externalGV)
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inner := &EmbeddedTest{
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ID: "inner",
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}
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outer := &EmbeddedTest{
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ID: "outer",
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Object: runtime.NewEncodable(codec, inner),
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}
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wire, err := runtime.Encode(codec, outer)
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if err != nil {
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t.Fatalf("Unexpected encode error '%v'", err)
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}
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t.Logf("Wire format is:\n%v\n", string(wire))
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decoded, err := runtime.Decode(codec, wire)
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if err != nil {
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t.Fatalf("Unexpected decode error %v", err)
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}
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// for later tests
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outer.Object = inner
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if e, a := outer, decoded; reflect.DeepEqual(e, a) {
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t.Errorf("Expected unequal %#v %#v", e, a)
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}
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obj, err := runtime.Decode(codec, decoded.(*EmbeddedTest).Object.(*runtime.Unknown).Raw)
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if err != nil {
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t.Fatal(err)
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}
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decoded.(*EmbeddedTest).Object = obj
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if e, a := outer, decoded; !reflect.DeepEqual(e, a) {
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t.Errorf("Expected equal %#v %#v", e, a)
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}
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// test JSON decoding of the external object, which should preserve
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// raw bytes
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var externalViaJSON EmbeddedTestExternal
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err = json.Unmarshal(wire, &externalViaJSON)
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if err != nil {
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t.Fatalf("Unexpected decode error %v", err)
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}
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if externalViaJSON.Kind == "" || externalViaJSON.APIVersion == "" || externalViaJSON.ID != "outer" {
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t.Errorf("Expected objects to have type info set, got %#v", externalViaJSON)
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}
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if !reflect.DeepEqual(externalViaJSON.EmptyObject.Raw, []byte("null")) || len(externalViaJSON.Object.Raw) == 0 {
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t.Errorf("Expected deserialization of nested objects into bytes, got %#v", externalViaJSON)
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}
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// test JSON decoding, too, since Decode uses yaml unmarshalling.
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// Generic Unmarshalling of JSON cannot load the nested objects because there is
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// no default schema set. Consumers wishing to get direct JSON decoding must use
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// the external representation
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var decodedViaJSON EmbeddedTest
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err = json.Unmarshal(wire, &decodedViaJSON)
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if err == nil || !strings.Contains(err.Error(), "unmarshal object into Go value of type runtime.Object") {
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t.Fatalf("Unexpected decode error %v", err)
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}
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if a := decodedViaJSON; a.Object != nil || a.EmptyObject != nil {
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t.Errorf("Expected embedded objects to be nil: %#v", a)
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}
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}
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// TestDeepCopyOfRuntimeObject checks to make sure that runtime.Objects's can be passed through DeepCopy with fidelity
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func TestDeepCopyOfRuntimeObject(t *testing.T) {
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internalGV := schema.GroupVersion{Group: "test.group", Version: runtime.APIVersionInternal}
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externalGV := schema.GroupVersion{Group: "test.group", Version: "v1test"}
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embeddedTestExternalGVK := externalGV.WithKind("EmbeddedTest")
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s := runtime.NewScheme()
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s.AddKnownTypes(internalGV, &EmbeddedTest{})
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s.AddKnownTypeWithName(embeddedTestExternalGVK, &EmbeddedTestExternal{})
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original := &EmbeddedTest{
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ID: "outer",
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Object: &EmbeddedTest{
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ID: "inner",
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},
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}
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codec := serializer.NewCodecFactory(s).LegacyCodec(externalGV)
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originalData, err := runtime.Encode(codec, original)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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t.Logf("originalRole = %v\n", string(originalData))
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copyOfOriginal, err := s.DeepCopy(original)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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copiedData, err := runtime.Encode(codec, copyOfOriginal.(runtime.Object))
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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t.Logf("copyOfRole = %v\n", string(copiedData))
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if !reflect.DeepEqual(original, copyOfOriginal) {
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t.Errorf("expected \n%v\n, got \n%v", string(originalData), string(copiedData))
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}
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}
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