Golang runtime.NewScheme函数代码示例

// TestDeepCopyOfEmbeddedObject checks to make sure that EmbeddedObject's can be passed through DeepCopy with fidelity
func TestDeepCopyOfEmbeddedObject(t *testing.T) {
	s := runtime.NewScheme()
	s.AddKnownTypes("", &EmbeddedTest{})
	s.AddKnownTypeWithName("v1test", "EmbeddedTest", &EmbeddedTestExternal{})

	original := &EmbeddedTest{
		ID: "outer",
		Object: runtime.EmbeddedObject{
			&EmbeddedTest{
				ID: "inner",
			},
		},
	}

	originalData, err := s.EncodeToVersion(original, "v1test")
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	t.Logf("originalRole = %v\n", string(originalData))

	copyOfOriginal, err := conversion.DeepCopy(original)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	copiedData, err := s.EncodeToVersion(copyOfOriginal.(runtime.Object), "v1test")
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}
	t.Logf("copyOfRole   = %v\n", string(copiedData))

	if !reflect.DeepEqual(original, copyOfOriginal) {
		t.Errorf("expected \n%v\n, got \n%v", string(originalData), string(copiedData))
	}
}

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([]string{"unlikelyversion", validVersion}, func(version string) (*meta.VersionInterfaces, bool) {
		return &meta.VersionInterfaces{
			Codec:            runtime.CodecFor(scheme, version),
			ObjectConvertor:  scheme,
			MetadataAccessor: meta.NewAccessor(),
		}, (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 TestExternalToInternalMapping(t *testing.T) {
	scheme := runtime.NewScheme()
	scheme.AddKnownTypeWithName("", "OptionalExtensionType", &InternalOptionalExtensionType{})
	scheme.AddKnownTypeWithName("testExternal", "OptionalExtensionType", &ExternalOptionalExtensionType{})

	table := []struct {
		obj     runtime.Object
		encoded string
	}{
		{
			&InternalOptionalExtensionType{Extension: runtime.EmbeddedObject{nil}},
			`{"kind":"OptionalExtensionType","apiVersion":"testExternal"}`,
		},
	}

	for _, item := range table {
		gotDecoded, err := scheme.Decode([]byte(item.encoded))
		if err != nil {
			t.Errorf("unexpected error '%v' (%v)", err, item.encoded)
		} else if e, a := item.obj, gotDecoded; !reflect.DeepEqual(e, a) {
			var eEx, aEx runtime.Object
			if obj, ok := e.(*InternalOptionalExtensionType); ok {
				eEx = obj.Extension.Object
			}
			if obj, ok := a.(*InternalOptionalExtensionType); ok {
				aEx = obj.Extension.Object
			}
			t.Errorf("expected %#v, got %#v (%#v, %#v)", e, a, eEx, aEx)
		}
	}
}

func TestRESTMapperRESTMapping(t *testing.T) {
	testCases := []struct {
		Kind            string
		APIVersions     []string
		MixedCase       bool
		DefaultVersions []string

		Resource string
		Version  string
		Err      bool
	}{
		{Kind: "Unknown", Err: true},
		{Kind: "InternalObject", Err: true},

		{DefaultVersions: []string{"test"}, Kind: "Unknown", Err: true},

		{DefaultVersions: []string{"test"}, Kind: "InternalObject", APIVersions: []string{"test"}, Resource: "internalobjects"},
		{DefaultVersions: []string{"test"}, Kind: "InternalObject", APIVersions: []string{"test"}, Resource: "internalobjects"},

		{DefaultVersions: []string{"test"}, Kind: "InternalObject", APIVersions: []string{"test"}, Resource: "internalobjects"},

		{DefaultVersions: []string{"test"}, Kind: "InternalObject", APIVersions: []string{}, Resource: "internalobjects", Version: "test"},

		{DefaultVersions: []string{"test"}, Kind: "InternalObject", APIVersions: []string{"test"}, Resource: "internalobjects"},
		{DefaultVersions: []string{"test"}, Kind: "InternalObject", APIVersions: []string{"test"}, MixedCase: true, Resource: "internalObjects"},

		// TODO: add test for a resource that exists in one version but not another
	}
	for i, testCase := range testCases {
		mapper := NewDefaultRESTMapper(testCase.DefaultVersions, fakeInterfaces)
		scheme := runtime.NewScheme()
		scheme.AddKnownTypes("test", &InternalObject{})
		mapper.Add(scheme, testCase.MixedCase, "test")

		mapping, err := mapper.RESTMapping(testCase.Kind, testCase.APIVersions...)
		hasErr := err != nil
		if hasErr != testCase.Err {
			t.Errorf("%d: unexpected error behavior %t: %v", i, testCase.Err, err)
		}
		if hasErr {
			continue
		}
		if mapping.Resource != testCase.Resource {
			t.Errorf("%d: unexpected resource: %#v", i, mapping)
		}
		version := testCase.Version
		if version == "" {
			version = testCase.APIVersions[0]
		}
		if mapping.APIVersion != version {
			t.Errorf("%d: unexpected version: %#v", i, mapping)
		}
		if mapping.Codec == nil || mapping.MetadataAccessor == nil || mapping.ObjectConvertor == nil {
			t.Errorf("%d: missing codec and accessor: %#v", i, mapping)
		}
	}
}

func TestEmbeddedObject(t *testing.T) {
	s := runtime.NewScheme()
	s.AddKnownTypes("", &EmbeddedTest{})
	s.AddKnownTypeWithName("v1test", "EmbeddedTest", &EmbeddedTestExternal{})

	outer := &EmbeddedTest{
		ID: "outer",
		Object: runtime.EmbeddedObject{
			&EmbeddedTest{
				ID: "inner",
			},
		},
	}

	wire, err := s.EncodeToVersion(outer, "v1test")
	if err != nil {
		t.Fatalf("Unexpected encode error '%v'", err)
	}

	t.Logf("Wire format is:\n%v\n", string(wire))

	decoded, err := s.Decode(wire)
	if err != nil {
		t.Fatalf("Unexpected decode error %v", err)
	}

	if e, a := outer, decoded; !reflect.DeepEqual(e, a) {
		t.Errorf("Expected: %#v but got %#v", e, a)
	}

	// test JSON decoding of the external object, which should preserve
	// raw bytes
	var externalViaJSON EmbeddedTestExternal
	err = json.Unmarshal(wire, &externalViaJSON)
	if err != nil {
		t.Fatalf("Unexpected decode error %v", err)
	}
	if externalViaJSON.Kind == "" || externalViaJSON.APIVersion == "" || externalViaJSON.ID != "outer" {
		t.Errorf("Expected objects to have type info set, got %#v", externalViaJSON)
	}
	if !reflect.DeepEqual(externalViaJSON.EmptyObject.RawJSON, []byte("null")) || len(externalViaJSON.Object.RawJSON) == 0 {
		t.Errorf("Expected deserialization of nested objects into bytes, got %#v", externalViaJSON)
	}

	// test JSON decoding, too, since Decode uses yaml unmarshalling.
	// Generic Unmarshalling of JSON cannot load the nested objects because there is
	// no default schema set.  Consumers wishing to get direct JSON decoding must use
	// the external representation
	var decodedViaJSON EmbeddedTest
	err = json.Unmarshal(wire, &decodedViaJSON)
	if err != nil {
		t.Fatalf("Unexpected decode error %v", err)
	}
	if a := decodedViaJSON; a.Object.Object != nil || a.EmptyObject.Object != nil {
		t.Errorf("Expected embedded objects to be nil: %#v", a)
	}
}

func TestDecodeEmptyRawExtensionAsObject(t *testing.T) {
	s := runtime.NewScheme()
	s.AddKnownTypes("", &ObjectTest{})
	s.AddKnownTypeWithName("v1test", "ObjectTest", &ObjectTestExternal{})

	_, err := s.Decode([]byte(`{"kind":"ObjectTest","apiVersion":"v1test","items":[{}]}`))
	if err == nil {
		t.Fatalf("unexpected non-error")
	}
}

func TestRESTMapperRESTMappingSelectsVersion(t *testing.T) {
	mapper := NewDefaultRESTMapper([]string{"test1", "test2"}, fakeInterfaces)
	scheme := runtime.NewScheme()
	scheme.AddKnownTypes("test1", &InternalObject{})
	scheme.AddKnownTypeWithName("test2", "OtherObject", &InternalObject{})
	scheme.AddKnownTypeWithName("test3", "OtherObject", &InternalObject{})
	mapper.Add(scheme, false, "test1", "test2")

	// pick default matching object kind based on search order
	mapping, err := mapper.RESTMapping("OtherObject")
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if mapping.Resource != "otherobjects" || mapping.APIVersion != "test2" {
		t.Errorf("unexpected mapping: %#v", mapping)
	}

	mapping, err = mapper.RESTMapping("InternalObject")
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if mapping.Resource != "internalobjects" || mapping.APIVersion != "test1" {
		t.Errorf("unexpected mapping: %#v", mapping)
	}

	// mismatch of version
	mapping, err = mapper.RESTMapping("InternalObject", "test2")
	if err == nil {
		t.Errorf("unexpected non-error")
	}
	mapping, err = mapper.RESTMapping("OtherObject", "test1")
	if err == nil {
		t.Errorf("unexpected non-error")
	}

	// not in the search versions
	mapping, err = mapper.RESTMapping("OtherObject", "test3")
	if err == nil {
		t.Errorf("unexpected non-error")
	}

	// explicit search order
	mapping, err = mapper.RESTMapping("OtherObject", "test3", "test1")
	if err == nil {
		t.Errorf("unexpected non-error")
	}

	mapping, err = mapper.RESTMapping("OtherObject", "test3", "test2")
	if err != nil {
		t.Fatalf("unexpected non-error")
	}
	if mapping.Resource != "otherobjects" || mapping.APIVersion != "test2" {
		t.Errorf("unexpected mapping: %#v", mapping)
	}
}

func TestStringMapConversion(t *testing.T) {
	scheme := runtime.NewScheme()
	scheme.Log(t)
	scheme.AddKnownTypeWithName("", "Complex", &InternalComplex{})
	scheme.AddKnownTypeWithName("external", "Complex", &ExternalComplex{})

	testCases := map[string]struct {
		input    map[string][]string
		errFn    func(error) bool
		expected runtime.Object
	}{
		"ignores omitempty": {
			input: map[string][]string{
				"String":    {"not_used"},
				"string":    {"value"},
				"int":       {"1"},
				"Integer64": {"2"},
			},
			expected: &ExternalComplex{String: "value", Integer: 1},
		},
		"returns error on bad int": {
			input: map[string][]string{
				"int": {"a"},
			},
			errFn:    func(err error) bool { return err != nil },
			expected: &ExternalComplex{},
		},
		"parses int64": {
			input: map[string][]string{
				"Int64": {"-1"},
			},
			expected: &ExternalComplex{Int64: -1},
		},
		"returns error on bad int64": {
			input: map[string][]string{
				"Int64": {"a"},
			},
			errFn:    func(err error) bool { return err != nil },
			expected: &ExternalComplex{},
		},
	}

	for k, tc := range testCases {
		out := &ExternalComplex{}
		if err := scheme.Convert(&tc.input, out); (tc.errFn == nil && err != nil) || (tc.errFn != nil && !tc.errFn(err)) {
			t.Errorf("%s: unexpected error: %v", k, err)
			continue
		} else if err != nil {
			continue
		}
		if !reflect.DeepEqual(out, tc.expected) {
			t.Errorf("%s: unexpected output: %#v", k, out)
		}
	}
}

func TestRESTMapperReportsErrorOnBadVersion(t *testing.T) {
	mapper := NewDefaultRESTMapper([]string{"test1", "test2"}, unmatchedVersionInterfaces)
	scheme := runtime.NewScheme()
	scheme.AddKnownTypes("test1", &InternalObject{})
	mapper.Add(scheme, false, "test1")

	_, err := mapper.RESTMapping("InternalObject", "test1")
	if err == nil {
		t.Errorf("unexpected non-error")
	}
}

func init() {
	scheme = runtime.NewScheme()
	scheme.AddKnownTypes("", &TestResource{})
	scheme.AddKnownTypes(testapi.Version(), &TestResource{})
	codec = runtime.CodecFor(scheme, testapi.Version())
	scheme.AddConversionFuncs(
		func(in *TestResource, out *TestResource, s conversion.Scope) error {
			*out = *in
			return nil
		},
	)
}

func TestInvalidObjectValueKind(t *testing.T) {
	scheme := runtime.NewScheme()
	scheme.AddKnownTypeWithName("", "Simple", &InternalSimple{})

	embedded := &runtime.EmbeddedObject{}
	switch obj := embedded.Object.(type) {
	default:
		_, _, err := scheme.ObjectVersionAndKind(obj)
		if err == nil {
			t.Errorf("Expected error on invalid kind")
		}
	}
}

func TestBadJSONRejection(t *testing.T) {
	scheme := runtime.NewScheme()
	badJSONMissingKind := []byte(`{ }`)
	if _, err := scheme.Decode(badJSONMissingKind); err == nil {
		t.Errorf("Did not reject despite lack of kind field: %s", badJSONMissingKind)
	}
	badJSONUnknownType := []byte(`{"kind": "bar"}`)
	if _, err1 := scheme.Decode(badJSONUnknownType); err1 == nil {
		t.Errorf("Did not reject despite use of unknown type: %s", badJSONUnknownType)
	}
	/*badJSONKindMismatch := []byte(`{"kind": "Pod"}`)
	if err2 := DecodeInto(badJSONKindMismatch, &Minion{}); err2 == nil {
		t.Errorf("Kind is set but doesn't match the object type: %s", badJSONKindMismatch)
	}*/
}

func TestExtensionMapping(t *testing.T) {
	scheme := runtime.NewScheme()
	scheme.AddKnownTypeWithName("", "ExtensionType", &InternalExtensionType{})
	scheme.AddKnownTypeWithName("", "A", &ExtensionA{})
	scheme.AddKnownTypeWithName("", "B", &ExtensionB{})
	scheme.AddKnownTypeWithName("testExternal", "ExtensionType", &ExternalExtensionType{})
	scheme.AddKnownTypeWithName("testExternal", "A", &ExtensionA{})
	scheme.AddKnownTypeWithName("testExternal", "B", &ExtensionB{})

	table := []struct {
		obj     runtime.Object
		encoded string
	}{
		{
			&InternalExtensionType{Extension: runtime.EmbeddedObject{&ExtensionA{TestString: "foo"}}},
			`{"kind":"ExtensionType","apiVersion":"testExternal","extension":{"kind":"A","testString":"foo"}}`,
		}, {
			&InternalExtensionType{Extension: runtime.EmbeddedObject{&ExtensionB{TestString: "bar"}}},
			`{"kind":"ExtensionType","apiVersion":"testExternal","extension":{"kind":"B","testString":"bar"}}`,
		}, {
			&InternalExtensionType{Extension: runtime.EmbeddedObject{nil}},
			`{"kind":"ExtensionType","apiVersion":"testExternal","extension":null}`,
		},
	}

	for _, item := range table {
		gotEncoded, err := scheme.EncodeToVersion(item.obj, "testExternal")
		if err != nil {
			t.Errorf("unexpected error '%v' (%#v)", err, item.obj)
		} else if e, a := item.encoded, string(gotEncoded); e != a {
			t.Errorf("expected %v, got %v", e, a)
		}

		gotDecoded, err := scheme.Decode([]byte(item.encoded))
		if err != nil {
			t.Errorf("unexpected error '%v' (%v)", err, item.encoded)
		} else if e, a := item.obj, gotDecoded; !reflect.DeepEqual(e, a) {
			var eEx, aEx runtime.Object
			if obj, ok := e.(*InternalExtensionType); ok {
				eEx = obj.Extension.Object
			}
			if obj, ok := a.(*InternalExtensionType); ok {
				aEx = obj.Extension.Object
			}
			t.Errorf("expected %#v, got %#v (%#v, %#v)", e, a, eEx, aEx)
		}
	}
}

func newExternalScheme() (*runtime.Scheme, meta.RESTMapper, runtime.Codec) {
	scheme := runtime.NewScheme()
	scheme.AddKnownTypeWithName("", "Type", &internalType{})
	scheme.AddKnownTypeWithName("unlikelyversion", "Type", &externalType{})

	codec := runtime.CodecFor(scheme, "unlikelyversion")
	mapper := meta.NewDefaultRESTMapper([]string{"unlikelyversion"}, func(version string) (*meta.VersionInterfaces, bool) {
		return &meta.VersionInterfaces{
			Codec:            codec,
			ObjectConvertor:  scheme,
			MetadataAccessor: meta.NewAccessor(),
		}, (version == "unlikelyversion")
	})
	mapper.Add(scheme, false, "unlikelyversion")

	return scheme, mapper, codec
}

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: %#v", string(obj.Items[0].RawJSON))

	decoded, err := s.Decode(wire)
	if 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, decoded; !reflect.DeepEqual(e, a) {
		t.Log(string(decoded.(*ObjectTest).Items[2].(*runtime.Unknown).RawJSON))
		t.Errorf("mismatched decoded: %s", util.ObjectDiff(e, a))
	}
}