Golang Codec.Decode方法代碼示例

func roundTrip(t *testing.T, codec runtime.Codec, item runtime.Object) {
	printer := spew.ConfigState{DisableMethods: true}

	name := reflect.TypeOf(item).Elem().Name()
	data, err := codec.Encode(item)
	if err != nil {
		t.Errorf("%v: %v (%s)", name, err, printer.Sprintf("%#v", item))
		return
	}

	obj2, err := codec.Decode(data)
	if err != nil {
		t.Errorf("0: %v: %v\nCodec: %v\nData: %s\nSource: %#v", name, err, codec, string(data), printer.Sprintf("%#v", item))
		return
	}
	if !api.Semantic.DeepEqual(item, obj2) {
		t.Errorf("1: %v: diff: %v\nCodec: %v\nData: %s\nSource: %#v\nFinal: %#v", name, util.ObjectGoPrintDiff(item, obj2), codec, string(data), printer.Sprintf("%#v", item), printer.Sprintf("%#v", obj2))
		return
	}

	obj3 := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
	err = codec.DecodeInto(data, obj3)
	if err != nil {
		t.Errorf("2: %v: %v", name, err)
		return
	}
	if !api.Semantic.DeepEqual(item, obj3) {
		t.Errorf("3: %v: diff: %v\nCodec: %v", name, util.ObjectDiff(item, obj3), codec)
		return
	}
}

// DecodeDeploymentConfig decodes a DeploymentConfig from controller using codec. An error is returned
// if the controller doesn't contain an encoded config.
func DecodeDeploymentConfig(controller *api.ReplicationController, codec runtime.Codec) (*deployapi.DeploymentConfig, error) {
	encodedConfig := []byte(EncodedDeploymentConfigFor(controller))
	if decoded, err := codec.Decode(encodedConfig); err == nil {
		if config, ok := decoded.(*deployapi.DeploymentConfig); ok {
			return config, nil
		} else {
			return nil, fmt.Errorf("decoded DeploymentConfig from controller is not a DeploymentConfig: %v", err)
		}
	} else {
		return nil, fmt.Errorf("failed to decode DeploymentConfig from controller: %v", err)
	}
}

func readOrDie(t *testing.T, req *http.Request, codec runtime.Codec) runtime.Object {
	data, err := ioutil.ReadAll(req.Body)
	if err != nil {
		t.Errorf("Error reading: %v", err)
		t.FailNow()
	}
	obj, err := codec.Decode(data)
	if err != nil {
		t.Errorf("error decoding: %v", err)
		t.FailNow()
	}
	return obj
}

func roundTrip(t *testing.T, codec runtime.Codec, originalItem runtime.Object) {
	// Make a copy of the originalItem to give to conversion functions
	// This lets us know if conversion messed with the input object
	deepCopy, err := api.Scheme.DeepCopy(originalItem)
	if err != nil {
		t.Errorf("Could not copy object: %v", err)
		return
	}
	item := deepCopy.(runtime.Object)

	name := reflect.TypeOf(item).Elem().Name()
	data, err := codec.Encode(item)
	if err != nil {
		if conversion.IsNotRegisteredError(err) {
			t.Logf("%v is not registered", name)
			return
		}
		t.Errorf("%v: %v (%#v)", name, err, item)
		return
	}

	obj2, err := codec.Decode(data)
	if err != nil {
		t.Errorf("0: %v: %v\nCodec: %v\nData: %s\nSource: %#v", name, err, codec, string(data), originalItem)
		return
	}
	if reflect.TypeOf(item) != reflect.TypeOf(obj2) {
		obj2conv := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
		if err := api.Scheme.Convert(obj2, obj2conv); err != nil {
			t.Errorf("0X: no conversion from %v to %v: %v", reflect.TypeOf(item), reflect.TypeOf(obj2), err)
			return
		}
		obj2 = obj2conv
	}
	if !api.Semantic.DeepEqual(originalItem, obj2) {
		t.Errorf("1: %v: diff: %v\nCodec: %v\nData: %s\nSource: %s", name, util.ObjectDiff(originalItem, obj2), codec, string(data), util.ObjectGoPrintSideBySide(originalItem, obj2))
		return
	}

	obj3 := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
	err = codec.DecodeInto(data, obj3)
	if err != nil {
		t.Errorf("2: %v: %v", name, err)
		return
	}
	if !api.Semantic.DeepEqual(originalItem, obj3) {
		t.Errorf("3: %v: diff: %v\nCodec: %v", name, util.ObjectDiff(originalItem, obj3), codec)
		return
	}
}

func runTest(t *testing.T, codec runtime.Codec, source runtime.Object) {
	name := reflect.TypeOf(source).Elem().Name()
	apiObjectFuzzer.Fuzz(source)
	j, err := runtime.FindJSONBase(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", name, runtime.ObjectDiff(source, obj2))
			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", name, runtime.ObjectDiff(source, obj3))
			return
		}
	}
}