package org.example.wsClient;
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import com.alibaba.druid.util.StringUtils;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.google.common.reflect.TypeToken;
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import com.google.gson.Gson;
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import com.google.gson.JsonSyntaxException;
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import lombok.extern.slf4j.Slf4j;
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import org.example.pojo.Currency;
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import org.example.util.RedisUtil;
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import org.jetbrains.annotations.NotNull;
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import org.json.JSONException;
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import java.io.*;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import javax.websocket.*;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.net.URI;
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import java.net.URLEncoder;
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import java.nio.ByteBuffer;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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import java.util.stream.Collectors;
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/**
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* @program: demo
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* @description:
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* @create: 2024-07-19 16:44
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**/
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@ClientEndpoint
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@Slf4j
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public class KucoinClient {
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private static final String WS_ENDPOINT = "wss://ws-api-spot.kucoin.com/spotMarket/level2Depth5:";
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private static final long PING_INTERVAL = 20000;
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private final List<Currency> subscriptions;
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private final ScheduledExecutorService executorService;
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private Session session;
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private String token;
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private final Object lock = new Object(); // 添加一个锁对象
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private volatile boolean reconnecting = false; // 使用 volatile 关键字保证可见性
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private String id;
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public KucoinClient(List<Currency> subscriptions,String token) {
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this.subscriptions = subscriptions;
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this.token = token;
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this.executorService = Executors.newScheduledThreadPool(1);
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}
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public void start() {
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try {
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connect();
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if (session == null) {
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log.info("无法在超时时间内连接到服务器。");
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return;
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}
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executorService.scheduleAtFixedRate(this::sendPing, PING_INTERVAL, PING_INTERVAL, TimeUnit.MILLISECONDS);
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synchronized (this) {
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this.wait();
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}
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} catch (Exception e) {
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log.error("kucoin ws 连接过程中发生异常: " + e.getMessage(), e);
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} finally {
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executorService.shutdown();
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}
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}
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private void connect() throws Exception {
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WebSocketContainer container = ContainerProvider.getWebSocketContainer();
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String url = extracted();
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if(!StringUtils.isEmpty(url)){
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container.connectToServer(this, new URI(url));
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// 订阅消息
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String parameter = subscription();
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session.getBasicRemote().sendText(parameter);
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}
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}
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private static final String CHARSET = "UTF-8"; // 定义字符集常量，避免魔法字符串
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private String extracted() throws UnsupportedEncodingException {
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String symbol = getSymbol();
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String url = WS_ENDPOINT + symbol + "?token=" + URLEncoder.encode(token, CHARSET);
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return url;
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}
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@OnOpen
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public void onOpen(Session session) {
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log.info("kucoin ws 已连接到服务器。");
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this.session = session;
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synchronized (this) {
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this.notify();
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}
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}
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private static final Gson gson = new Gson(); // 将 Gson 作为静态成员或单例
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@OnMessage
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public void onMessage(String message) {
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try {
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Map<String, Object> map = gson.fromJson(message, new TypeToken<Map<String, Object>>() {}.getType());
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if(null != map.get("id")){
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this.id = map.get("id").toString();
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}
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if(null != map.get("data")){
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Object object = map.get("data");
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String topic = map.get("topic").toString();
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Map<String, Object> resultMap = gson.fromJson(object.toString(), new TypeToken<Map<String, Object>>() {}.getType());
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if (null != resultMap) {
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HashMap<String,Object> hashMap = new HashMap<>();
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ObjectMapper mapper = new ObjectMapper();
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hashMap.put("bids",resultMap.get("bids"));
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hashMap.put("asks",resultMap.get("asks"));
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int index = topic.indexOf(":"); // 找到逗号的位置
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if (index != -1) { // 如果找到了逗号
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String substring = topic.substring(index + 1);
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String symbol = substring.replaceAll("-", "");
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String key = "kucoin" + symbol;
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RedisUtil.set(key, mapper.writeValueAsString(hashMap));
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} else {
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// 处理未找到特定字符的情况
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log.error("topic--->存入redis失败");
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}
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}
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}
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} catch (JsonSyntaxException e) {
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log.error("JSON 解析异常：" + e.getMessage(), e);
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} catch (JsonProcessingException e) {
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log.error("JSON 解析异常：" + e.getMessage(), e);
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}
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}
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@OnClose
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public void onClose() {
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log.info("kucoin ws 连接已关闭，尝试重新连接...");
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handleConnectionClosedOrError();
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}
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@OnError
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public void onError(Throwable throwable) {
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log.error("kucoin ws 发生错误: " + throwable.getMessage(), throwable);
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handleConnectionClosedOrError();
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}
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private void handleConnectionClosedOrError() {
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synchronized (lock) {
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if (!reconnecting) {
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reconnecting = true; // 设置 reconnecting 为 true 表示开始重连
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executorService.execute(this::attemptReconnect); // 使用 execute 方法立即执行重连
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}
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}
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}
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private void attemptReconnect() {
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boolean doReconnect = true;
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try {
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log.info("kucoin ws 开始重连");
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connect(); // 假设 connect() 方法用于实际的连接逻辑
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log.info("kucoin ws 重连成功");
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} catch (Exception e) {
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log.error("kucoin ws 重连失败", e);
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// 连接失败时，可以根据具体情况决定是否继续重连
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// 在这里假设总是继续尝试重连
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} finally {
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synchronized (lock) {
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if (doReconnect) {
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scheduleReconnect(); // 如果需要继续重连，则重新调度重连任务
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} else {
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reconnecting = false; // 重连结束后设置 reconnecting 为 false
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}
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}
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}
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}
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private void scheduleReconnect() {
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if (!executorService.isShutdown()) {
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executorService.schedule(this::attemptReconnect, 5, TimeUnit.SECONDS);
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}
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}
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private void sendPing() {
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try {
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if (session != null) {
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session.getBasicRemote().sendPing(ByteBuffer.wrap("Ping".getBytes()));
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}
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} catch (Exception e) {
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log.error("发送心跳失败", e);
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}
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}
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public String subscription() throws JsonProcessingException, JSONException {
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String symbol = getSymbol();
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// 创建一个ObjectMapper实例
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ObjectMapper mapper = new ObjectMapper();
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// 使用Map构建JSON对象
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Map<String, Object> jsonMap = new HashMap<>();
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jsonMap.put("id", id);
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jsonMap.put("type", "subscribe");
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jsonMap.put("topic", "/spotMarket/level2Depth50:"+symbol);
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jsonMap.put("privateChannel", false);
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jsonMap.put("response", true);
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// 将Map转换为JSON字符串
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String jsonString = mapper.writeValueAsString(jsonMap);
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return jsonString;
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}
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@NotNull
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private String getSymbol() {
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String symbol;
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List<String> symbolList = subscriptions.stream()
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.map(currency -> currency.getSymbol().replaceAll("USDT", "-USDT"))
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.collect(Collectors.toList());
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symbol = String.join(",", symbolList);
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return symbol;
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}
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}
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