package com.xcong.excoin.modules.gateApi;
|
|
import com.alibaba.fastjson.JSON;
|
import com.alibaba.fastjson.JSONObject;
|
import com.xcong.excoin.modules.gateApi.wsHandler.GateChannelHandler;
|
import com.xcong.excoin.modules.okxNewPrice.utils.SSLConfig;
|
import lombok.extern.slf4j.Slf4j;
|
import org.java_websocket.client.WebSocketClient;
|
import org.java_websocket.handshake.ServerHandshake;
|
|
import java.net.URI;
|
import java.net.URISyntaxException;
|
import java.util.ArrayList;
|
import java.util.List;
|
import java.util.concurrent.*;
|
import java.util.concurrent.atomic.AtomicBoolean;
|
import java.util.concurrent.atomic.AtomicInteger;
|
import java.util.concurrent.atomic.AtomicReference;
|
|
/**
|
* Gate WebSocket 连接管理器。
|
*
|
* <h3>职责</h3>
|
* 负责 TCP 连接的建立、维持和恢复。频道逻辑(订阅/解析)全部委托给 {@link GateChannelHandler} 实现类。
|
*
|
* <h3>生命周期</h3>
|
* <pre>
|
* init() → connect() → startHeartbeat()
|
* destroy() → destroyed=true → unsubscribe 所有 handler → closeBlocking() → shutdown 线程池
|
* onClose() → scheduleReconnect() → reconnectWithBackoff()(无限重试,指数退避,上限 60s)
|
* </pre>
|
*
|
* <h3>消息路由</h3>
|
* <pre>
|
* onMessage → handleMessage:
|
* 1. futures.pong → cancelPongTimeout
|
* 2. subscribe/unsubscribe → 日志
|
* 3. error → 错误日志
|
* 4. update/all → 遍历 channelHandlers → handler.handleMessage(response)
|
* </pre>
|
*
|
* <h3>心跳与断线检测(双层)</h3>
|
* <ol>
|
* <li>TCP 层:Java-WebSocket 自带 ping/pong 保活({@code connectionLostTimeout = 30s}),
|
* 半开连接(对端静默丢包、无 FIN/RST)会在 30 秒内被库判定丢失并触发 onClose。</li>
|
* <li>应用层:{@code futures.ping}/{@code futures.pong}。10 秒未收到任何消息 → 发 ping;
|
* 45 秒未收到任何消息 → 判定连接死亡,主动 close → onClose → 重连。</li>
|
* </ol>
|
*
|
* <h3>重连策略</h3>
|
* 无限次重试:5s → 10s → 20s → 40s → 60s(封顶),连接成功(onOpen)后归零。
|
* destroy() 后立即停止重连。
|
*
|
* <h3>线程安全</h3>
|
* 连接状态用 AtomicBoolean(isConnected, isConnecting, isInitialized, destroyed, reconnectInProgress)。
|
* 消息时间戳用 AtomicReference。心跳任务用 synchronized 保护。
|
*
|
* @author Administrator
|
*/
|
@SuppressWarnings("ALL")
|
@Slf4j
|
public class GateKlineWebSocketClient {
|
|
private static final String FUTURES_PING = "futures.ping";
|
private static final String FUTURES_PONG = "futures.pong";
|
/** 静默超过该秒数 → 发送 futures.ping */
|
private static final int HEARTBEAT_TIMEOUT = 10;
|
/** 静默超过该秒数 → 判定连接死亡,主动断开重连 */
|
private static final int DEAD_TIMEOUT_SECONDS = 45;
|
/** Java-WebSocket 库层 ping/pong 保活超时(秒),用于检测半开 TCP 连接 */
|
private static final int CONNECTION_LOST_TIMEOUT_SECONDS = 30;
|
/** 重连初始延迟(毫秒) */
|
private static final long INITIAL_RECONNECT_DELAY_MS = 5000;
|
/** 重连最大延迟(毫秒),指数退避封顶值 */
|
private static final long MAX_RECONNECT_DELAY_MS = 60000;
|
|
/** WebSocket 地址,由 GateConfig 提供 */
|
private final String wsUrl;
|
|
/** Java-WebSocket 客户端实例 */
|
private WebSocketClient webSocketClient;
|
/** 心跳检测调度器 */
|
private ScheduledExecutorService heartbeatExecutor;
|
/** 心跳超时 Future */
|
private volatile ScheduledFuture<?> pongTimeoutFuture;
|
/** 最后收到消息的时间戳(毫秒) */
|
private final AtomicReference<Long> lastMessageTime = new AtomicReference<>(System.currentTimeMillis());
|
|
/** 连接状态 */
|
private final AtomicBoolean isConnected = new AtomicBoolean(false);
|
/** 连接中标记,防重入 */
|
private final AtomicBoolean isConnecting = new AtomicBoolean(false);
|
/** 初始化标记,防重复 init */
|
private final AtomicBoolean isInitialized = new AtomicBoolean(false);
|
/** 销毁标记:置位后停止一切重连 */
|
private final AtomicBoolean destroyed = new AtomicBoolean(false);
|
/** 重连任务进行中标记,防止 onClose 并发触发多个重连循环 */
|
private final AtomicBoolean reconnectInProgress = new AtomicBoolean(false);
|
/** 当前重连次数(连接成功后归零),仅用于日志 */
|
private final AtomicInteger reconnectAttempt = new AtomicInteger(0);
|
|
/** 频道处理器列表,通过 addChannelHandler 注册 */
|
private final List<GateChannelHandler> channelHandlers = new ArrayList<>();
|
|
/** 重连等异步任务的缓存线程池(daemon 线程) */
|
private final ExecutorService sharedExecutor = Executors.newCachedThreadPool(r -> {
|
Thread t = new Thread(r, "gate-ws-worker");
|
t.setDaemon(true);
|
return t;
|
});
|
|
/**
|
* @param wsUrl Gate WebSocket 地址(由 {@link GateConfig#getWsUrl()} 提供)
|
*/
|
public GateKlineWebSocketClient(String wsUrl) {
|
this.wsUrl = wsUrl;
|
}
|
|
/**
|
* 注册频道处理器。需在 init() 前调用。
|
*
|
* @param handler 实现了 {@link GateChannelHandler} 接口的频道处理器
|
*/
|
public void addChannelHandler(GateChannelHandler handler) {
|
channelHandlers.add(handler);
|
}
|
|
/**
|
* 初始化:建立 WebSocket 连接 → 启动心跳检测。
|
* 使用 {@code AtomicBoolean} 防重入,同一实例只允许初始化一次。
|
*/
|
public void init() {
|
if (!isInitialized.compareAndSet(false, true)) {
|
log.warn("[WS] 已初始化过,跳过重复初始化");
|
return;
|
}
|
connect();
|
startHeartbeat();
|
}
|
|
/**
|
* 销毁:置销毁标记(停止重连)→ 取消所有频道订阅 → 关闭 WebSocket 连接 → 关闭线程池。
|
*
|
* <h3>执行顺序</h3>
|
* 先取消订阅(等待 500ms 确保发送完成),再 closeBlocking 关闭连接,
|
* 最后 shutdown 线程池。先关连接再关线程池,避免 onClose 回调中的重连任务访问已关闭的线程池。
|
*/
|
public void destroy() {
|
log.info("[WS] 开始销毁...");
|
destroyed.set(true);
|
|
if (webSocketClient != null && webSocketClient.isOpen()) {
|
for (GateChannelHandler handler : channelHandlers) {
|
handler.unsubscribe(webSocketClient);
|
}
|
try {
|
Thread.sleep(500);
|
} catch (InterruptedException e) {
|
Thread.currentThread().interrupt();
|
log.warn("[WS] 取消订阅等待被中断");
|
}
|
}
|
|
if (webSocketClient != null && webSocketClient.isOpen()) {
|
try {
|
webSocketClient.closeBlocking();
|
} catch (InterruptedException e) {
|
Thread.currentThread().interrupt();
|
log.warn("[WS] 关闭连接时被中断");
|
}
|
}
|
|
if (pongTimeoutFuture != null) {
|
pongTimeoutFuture.cancel(true);
|
}
|
shutdownExecutorGracefully(heartbeatExecutor);
|
shutdownExecutorGracefully(sharedExecutor);
|
|
log.info("[WS] 销毁完成");
|
}
|
|
/**
|
* 建立 WebSocket 连接。使用 SSLContext 配置 TLS 协议。
|
*
|
* <h3>连接成功回调</h3>
|
* <ol>
|
* <li>设置 isConnected=true,isConnecting=false</li>
|
* <li>重连计数归零</li>
|
* <li>重置心跳计时器</li>
|
* <li>重置各 handler 订阅标记并重新订阅全部频道</li>
|
* <li>发送首次 ping</li>
|
* </ol>
|
*
|
* <h3>连接关闭回调</h3>
|
* 设置断连状态 → 取消心跳超时 → 异步触发无限指数退避重连。
|
*
|
* <h3>线程安全</h3>
|
* 使用 {@code AtomicBoolean.isConnecting} 防止并发重连;
|
* finally 中保证失败路径下 isConnecting 一定被复位。
|
*/
|
private void connect() {
|
if (destroyed.get()) {
|
log.info("[WS] 已销毁,不再建立连接");
|
return;
|
}
|
if (!isConnecting.compareAndSet(false, true)) {
|
log.info("[WS] 连接进行中,跳过重复请求");
|
return;
|
}
|
try {
|
SSLConfig.configureSSL();
|
System.setProperty("https.protocols", "TLSv1.2,TLSv1.3");
|
URI uri = new URI(wsUrl);
|
if (webSocketClient != null) {
|
try { webSocketClient.closeBlocking(); } catch (InterruptedException e) { Thread.currentThread().interrupt(); }
|
}
|
webSocketClient = new WebSocketClient(uri) {
|
@Override
|
public void onOpen(ServerHandshake handshake) {
|
log.info("[WS] 连接成功");
|
isConnected.set(true);
|
isConnecting.set(false);
|
reconnectAttempt.set(0);
|
if (sharedExecutor != null && !sharedExecutor.isShutdown()) {
|
for (GateChannelHandler handler : channelHandlers) {
|
handler.setSubscribed(false);
|
}
|
resetHeartbeatTimer();
|
for (GateChannelHandler handler : channelHandlers) {
|
handler.subscribe(webSocketClient);
|
}
|
sendPing();
|
} else {
|
log.warn("[WS] 应用正在关闭,忽略连接成功回调");
|
}
|
}
|
|
@Override
|
public void onMessage(String message) {
|
lastMessageTime.set(System.currentTimeMillis());
|
handleMessage(message);
|
resetHeartbeatTimer();
|
}
|
|
@Override
|
public void onClose(int code, String reason, boolean remote) {
|
log.warn("[WS] 连接关闭, code:{}, reason:{}, remote:{}", code, reason, remote);
|
isConnected.set(false);
|
isConnecting.set(false);
|
cancelPongTimeout();
|
scheduleReconnect();
|
}
|
|
@Override
|
public void onError(Exception ex) {
|
log.error("[WS] 发生错误: {}", ex.toString());
|
isConnected.set(false);
|
// 归一化处理:错误后主动关闭 socket,走 onClose → 重连 的路径
|
if (webSocketClient != null && webSocketClient.isOpen()) {
|
try { webSocketClient.close(); } catch (Exception e) { log.warn("[WS] 错误后关闭连接失败", e); }
|
}
|
}
|
};
|
webSocketClient.setConnectionLostTimeout(CONNECTION_LOST_TIMEOUT_SECONDS);
|
webSocketClient.connect();
|
} catch (Exception e) {
|
log.error("[WS] 建立连接失败: {}", e.toString());
|
// connect() 抛出异常时可能不会回调 onClose,这里主动调度重连
|
scheduleReconnect();
|
} finally {
|
// 任何失败路径都要复位 isConnecting,否则后续重连会被永久跳过
|
if (!isConnected.get()) {
|
isConnecting.set(false);
|
}
|
}
|
}
|
|
/**
|
* 消息分发:先处理系统事件(pong/subscribe/error),
|
* 再把 update/all 事件路由到各 channelHandler。
|
* <p>每个 handler 内部通过 channel 名称做二次匹配,匹配成功返回 true 则停止遍历。
|
*/
|
private void handleMessage(String message) {
|
try {
|
JSONObject response = JSON.parseObject(message);
|
String channel = response.getString("channel");
|
String event = response.getString("event");
|
|
if (FUTURES_PONG.equals(channel)) {
|
log.debug("[WS] 收到 pong 响应");
|
cancelPongTimeout();
|
return;
|
}
|
if ("subscribe".equals(event)) {
|
log.info("[WS] {} 订阅成功: {}", channel, response.getJSONObject("result"));
|
for (GateChannelHandler handler : channelHandlers) {
|
if (channel.equals(handler.getChannelName())) {
|
handler.setSubscribed(true);
|
break;
|
}
|
}
|
return;
|
}
|
if ("unsubscribe".equals(event)) {
|
log.info("[WS] {} 取消订阅成功", channel);
|
return;
|
}
|
if ("error".equals(event)) {
|
JSONObject error = response.getJSONObject("error");
|
log.error("[WS] {} 错误, code:{}, msg:{}",
|
channel,
|
error != null ? error.getInteger("code") : "N/A",
|
error != null ? error.getString("message") : response.getString("msg"));
|
return;
|
}
|
if ("update".equals(event) || "all".equals(event)) {
|
for (GateChannelHandler handler : channelHandlers) {
|
if (handler.handleMessage(response)) return;
|
}
|
}
|
} catch (Exception e) {
|
log.error("[WS] 处理消息失败: {}", message, e);
|
}
|
}
|
|
/**
|
* 检查所有已注册的频道是否都已收到订阅成功确认。
|
*/
|
public boolean areAllSubscribed() {
|
if (channelHandlers.isEmpty()) return false;
|
for (GateChannelHandler h : channelHandlers) {
|
if (!h.isSubscribed()) return false;
|
}
|
return true;
|
}
|
|
// ---- heartbeat ----
|
|
/**
|
* 启动心跳检测器。
|
* 使用单线程 ScheduledExecutor,每 25 秒检查一次心跳超时。
|
*/
|
private void startHeartbeat() {
|
if (heartbeatExecutor != null && !heartbeatExecutor.isTerminated()) heartbeatExecutor.shutdownNow();
|
heartbeatExecutor = Executors.newSingleThreadScheduledExecutor(r -> { Thread t = new Thread(r, "gate-ws-heartbeat"); t.setDaemon(true); return t; });
|
heartbeatExecutor.scheduleWithFixedDelay(this::checkHeartbeatTimeout, 25, 25, TimeUnit.SECONDS);
|
}
|
|
/**
|
* 重置心跳计时器:取消旧超时任务,提交新的 10 秒超时检测。
|
*/
|
private synchronized void resetHeartbeatTimer() {
|
cancelPongTimeout();
|
if (heartbeatExecutor != null && !heartbeatExecutor.isShutdown()) {
|
pongTimeoutFuture = heartbeatExecutor.schedule(this::checkHeartbeatTimeout, HEARTBEAT_TIMEOUT, TimeUnit.SECONDS);
|
}
|
}
|
|
/**
|
* 心跳检查(由 25s 周期任务 + 每次收到消息后 10s 的一次性任务触发):
|
* <ol>
|
* <li>静默 ≥ {@link #DEAD_TIMEOUT_SECONDS} 秒 → 判定连接死亡(半开 TCP / 对端失联),主动断开触发重连;</li>
|
* <li>静默 ≥ {@link #HEARTBEAT_TIMEOUT} 秒 → 发送 futures.ping 探测。</li>
|
* </ol>
|
*/
|
private void checkHeartbeatTimeout() {
|
if (!isConnected.get() || destroyed.get()) return;
|
long silentMs = System.currentTimeMillis() - lastMessageTime.get();
|
if (silentMs >= DEAD_TIMEOUT_SECONDS * 1000L) {
|
log.warn("[WS] 已 {} 秒未收到任何消息,判定连接死亡,主动断开重连", silentMs / 1000);
|
if (webSocketClient != null) {
|
try { webSocketClient.close(); } catch (Exception e) { log.warn("[WS] 主动断开失败", e); }
|
}
|
return;
|
}
|
if (silentMs >= HEARTBEAT_TIMEOUT * 1000L) {
|
sendPing();
|
}
|
}
|
|
/**
|
* 发送应用层 futures.ping 消息。
|
*/
|
private void sendPing() {
|
try {
|
if (webSocketClient != null && webSocketClient.isOpen()) {
|
JSONObject pingMsg = new JSONObject();
|
pingMsg.put("time", System.currentTimeMillis() / 1000);
|
pingMsg.put("channel", FUTURES_PING);
|
webSocketClient.send(pingMsg.toJSONString());
|
log.debug("[WS] 发送 ping 请求");
|
}
|
} catch (Exception e) { log.warn("[WS] 发送 ping 失败", e); }
|
}
|
|
/**
|
* 取消心跳超时检测任务。
|
*/
|
private synchronized void cancelPongTimeout() {
|
if (pongTimeoutFuture != null && !pongTimeoutFuture.isDone()) pongTimeoutFuture.cancel(true);
|
}
|
|
// ---- reconnect ----
|
|
/**
|
* 调度重连任务。用 {@code reconnectInProgress} 防并发:onClose 可能被触发多次,
|
* 但同一时刻只允许一个重连循环在跑。
|
*/
|
private void scheduleReconnect() {
|
if (destroyed.get()) {
|
log.info("[WS] 已销毁,跳过重连调度");
|
return;
|
}
|
if (sharedExecutor == null || sharedExecutor.isShutdown() || sharedExecutor.isTerminated()) {
|
log.warn("[WS] 线程池已关闭,不执行重连");
|
return;
|
}
|
if (!reconnectInProgress.compareAndSet(false, true)) {
|
log.info("[WS] 已有重连任务进行中,跳过重复调度");
|
return;
|
}
|
sharedExecutor.execute(() -> {
|
try {
|
reconnectWithBackoff();
|
} catch (InterruptedException e) {
|
Thread.currentThread().interrupt();
|
log.info("[WS] 重连任务被中断");
|
} catch (Exception e) {
|
log.error("[WS] 重连失败", e);
|
} finally {
|
reconnectInProgress.set(false);
|
}
|
});
|
}
|
|
/**
|
* 无限指数退避重连:5s → 10s → 20s → 40s → 60s(封顶),直到连接成功或 destroy()。
|
* connect() 为阻塞调用:返回后若 isConnected 未置位则视为失败,继续下一轮。
|
*
|
* @throws InterruptedException 线程被中断(destroy 时)
|
*/
|
private void reconnectWithBackoff() throws InterruptedException {
|
long delayMs = INITIAL_RECONNECT_DELAY_MS;
|
while (!destroyed.get() && !isConnected.get()) {
|
int attempt = reconnectAttempt.incrementAndGet();
|
try {
|
Thread.sleep(delayMs);
|
} catch (InterruptedException e) {
|
Thread.currentThread().interrupt();
|
log.info("[WS] 重连等待被中断,停止重连");
|
return;
|
}
|
if (destroyed.get() || isConnected.get()) return;
|
log.info("[WS] 开始第 {} 次重连", attempt);
|
try {
|
connect();
|
} catch (Exception e) {
|
log.warn("[WS] 第 {} 次重连失败: {}", attempt, e.toString());
|
}
|
delayMs = Math.min(delayMs * 2, MAX_RECONNECT_DELAY_MS);
|
}
|
if (isConnected.get()) {
|
log.info("[WS] 重连成功,共尝试 {} 次", reconnectAttempt.get());
|
} else {
|
log.info("[WS] 已销毁,停止重连");
|
}
|
}
|
|
/**
|
* 优雅关闭线程池:先 shutdown,等待 5 秒,超时则 shutdownNow 强制中断。
|
*
|
* @param executor 需要关闭的线程池
|
*/
|
private void shutdownExecutorGracefully(ExecutorService executor) {
|
if (executor == null || executor.isTerminated()) return;
|
try { executor.shutdown(); if (!executor.awaitTermination(5, TimeUnit.SECONDS)) executor.shutdownNow(); }
|
catch (InterruptedException e) { Thread.currentThread().interrupt(); executor.shutdownNow(); }
|
}
|
}
|