Golang Registry.DefaultSerializer方法代碼示例

func SerializeResponseMiddleware(registry kit.Registry, request kit.Request, response kit.Response) (kit.Response, bool) {
	// Try to serialize the reponse data.

	// Determine serializer.
	serializer := registry.DefaultSerializer()

	// Check if a custom serializer was specified.
	if name := request.GetContext().String("response-serializer"); name != "" {
		serializer = registry.Serializer(name)
		if serializer == nil {
			errResp := kit.NewErrorResponse("unknown_response_serializer", true)
			data, _ := serializer.MustSerializeResponse(errResp)
			errResp.SetData(data)
			return errResp, false
		}
	}

	// Set format in metadata.
	meta := response.GetMeta()
	if meta == nil {
		meta = make(map[string]interface{})
	}

	meta["format"] = serializer.Name()
	response.SetMeta(meta)

	data, err := serializer.MustSerializeResponse(response)
	if err != nil {
		registry.Logger().Errorf("Response serialization error: %v (%+v)", err, response)
	}
	response.SetData(data)

	return nil, false
}

func UnserializeRequestMiddleware(registry kit.Registry, request kit.Request) (kit.Response, bool) {
	// Try to parse json in body. Ignore error since body might not contain json.
	contentType := request.GetHttpRequest().Header.Get("Content-Type")
	if strings.Contains(contentType, "json") {
		// Only read the HTTP body automatically for json content type requests,
		// since some handlers might need to read it themselfes (see the files package resource).
		if err := request.ReadHttpBody(); err != nil {
			return kit.NewErrorResponse(err, "http_body_read_error"), false
		} else {
			if request.GetRawData() != nil {
				if err := request.ParseJsonData(); err != nil {
					return kit.NewErrorResponse(err, "invalid_json_body", true), false
				}

				if request.GetData() != nil {
					// Successfully parsed json body.

					// Now try to unserialize.

					// Determine serializer.
					serializer := registry.DefaultSerializer()

					// Check if a custom serializer was specified.
					if name := request.GetContext().String("request-serializer"); name != "" {
						serializer = registry.Serializer(name)
					}

					if serializer == nil {
						return kit.NewErrorResponse("unknown_serializer", fmt.Sprintf("The specified request serializer does not exist")), false
					} else {
						if err := request.Unserialize(serializer); err != nil {
							return kit.NewErrorResponse(err, "request_unserialize_error", true), false
						}
					}
				}
			}
		}
	}

	return nil, false
}

func UnserializerMiddleware(registry kit.Registry, request kit.Request) (kit.Response, bool) {
	serializer := registry.DefaultSerializer()

	// Try to find custom serializer.
	data, ok := request.GetData().(map[string]interface{})
	if ok {
		name, ok := data["request_serializer"].(string)
		if ok {
			s := registry.Serializer(name)
			if s == nil {
				resp := kit.NewErrorResponse("unknown_request_serializer", fmt.Sprintf("The given request serializer %v does not exist", name))
				return resp, false
			} else {
				serializer = s
			}
		}
	}

	if err := serializer.UnserializeRequest(request.GetData(), request); err != nil {
		return kit.NewErrorResponse(err), false
	}

	return nil, false
}