@SpringBootApplication
public class WebRouteApplication{
    public static void main(String[] args){
        SpringApplication.run(WebRouteApplication.class, args);
    }
}

@Component
public class UserRoute implements WebRelayTemplate {
	private static final List<String> WEB_SERVER_URL = new ArrayList<>();

	static {
		/**
		 * You Can Use The RPC Tool To Obtain The Cluster URL Address Periodically
		 * For Example, Use HTTP To Request URL Storage Server (HttpServer+Redis)
		 */
		WEB_SERVER_URL.add("127.0.0.1:8080");
		WEB_SERVER_URL.add("127.0.0.1:8081");
		WEB_SERVER_URL.add("127.0.0.1:8082");
	}

	public static String getLocalUrl(int offset) {
		return WEB_SERVER_URL.get(offset);
	}

	@Override
	public WebRelayMessage relay(HttpRequestMessage httpRequestMessage) {
		HttpHeaders headers = httpRequestMessage.getHeaders();
		int offset = Integer.getInteger(headers.get("offset"));
		String url = getLocalUrl(offset);
		headers.add("Hello", "World");

		String uri = httpRequestMessage.getUri();
		var path = "";
		var relayErrorMessage = "relayError";
		try {
			Map<String, String> uriParam = UriUtils.uriConvertMap(uri);
			uriParam.put("hello", "world");
			path = UriUtils.mapConvertUri(uri, uriParam);

		} catch (UnsupportedEncodingException e) {
			log.error("relayError", e);
		}
		return WebRelayMessageBuilder.builderWebRelayMessage(url, path, headers, relayErrorMessage);
	}
}