c6126a42c9
在交易系统中新增24小时行情WebSocket流的支持，优先从缓存中读取行情数据，减少对REST API的依赖。更新市场扫描器以使用WebSocket缓存，确保在缓存过期时回退到REST请求。同时，添加了相应的异常处理逻辑以增强系统的稳定性。
139 lines
5.1 KiB
Python
139 lines
5.1 KiB
Python
"""
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24 小时行情 WebSocket 流：订阅 !ticker@arr，维护全市场 ticker 缓存。
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供 market_scanner 优先使用，避免批量 REST get_all_tickers_24h，减少请求与超时。
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文档：仅发生变化的交易对会出现在推送数组中，约 1 秒一次。
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"""
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import asyncio
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import json
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import logging
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import time
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from typing import Dict, Optional, Any
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logger = logging.getLogger(__name__)
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# 全市场 24h ticker 缓存：symbol -> { symbol, price, volume, changePercent, ts }
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_ticker_24h_cache: Dict[str, Dict[str, Any]] = {}
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_ticker_24h_updated_at: float = 0.0
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def get_tickers_24h_cache() -> Dict[str, Dict[str, Any]]:
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"""返回当前 24h ticker 缓存（与 get_all_tickers_24h 结构兼容）。"""
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return dict(_ticker_24h_cache)
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def get_tickers_24h_cache_updated_at() -> float:
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"""返回缓存最后更新时间（monotonic）。未更新过为 0。"""
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return _ticker_24h_updated_at
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def is_ticker_24h_cache_fresh(max_age_sec: float = 120.0) -> bool:
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"""缓存是否在 max_age_sec 秒内更新过且非空。"""
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if not _ticker_24h_cache:
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return False
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return (time.monotonic() - _ticker_24h_updated_at) <= max_age_sec
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class Ticker24hStream:
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"""订阅合约 !ticker@arr，持续更新 _ticker_24h_cache。无需 listenKey，公开行情。"""
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def __init__(self, testnet: bool = False):
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self.testnet = testnet
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self._ws = None
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self._task: Optional[asyncio.Task] = None
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self._running = False
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def _ws_url(self) -> str:
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if self.testnet:
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return "wss://stream.binancefuture.com/ws/!ticker@arr"
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return "wss://fstream.binance.com/ws/!ticker@arr"
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async def start(self) -> bool:
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if self._running:
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return True
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self._running = True
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self._task = asyncio.create_task(self._run_ws())
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logger.info("Ticker24hStream: 已启动（!ticker@arr），扫描将优先使用 WS 缓存")
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return True
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async def stop(self):
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self._running = False
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if self._task:
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self._task.cancel()
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try:
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await self._task
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except asyncio.CancelledError:
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pass
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self._task = None
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if self._ws:
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try:
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await self._ws.close()
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except Exception:
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pass
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self._ws = None
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logger.info("Ticker24hStream: 已停止")
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async def _run_ws(self):
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import aiohttp
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while self._running:
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url = self._ws_url()
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try:
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async with aiohttp.ClientSession() as session:
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async with session.ws_connect(
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url, heartbeat=50, timeout=aiohttp.ClientTimeout(total=15)
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) as ws:
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self._ws = ws
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logger.info("Ticker24hStream: WS 已连接")
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async for msg in ws:
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if not self._running:
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break
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if msg.type == aiohttp.WSMsgType.TEXT:
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self._handle_message(msg.data)
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elif msg.type in (aiohttp.WSMsgType.ERROR, aiohttp.WSMsgType.CLOSED, aiohttp.WSMsgType.CLOSE):
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break
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except asyncio.CancelledError:
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break
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except Exception as e:
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logger.warning(f"Ticker24hStream: WS 异常 {e}，10s 后重连")
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await asyncio.sleep(10)
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self._ws = None
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if not self._running:
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break
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def _handle_message(self, raw: str):
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global _ticker_24h_cache, _ticker_24h_updated_at
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try:
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data = json.loads(raw)
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except Exception:
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return
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# 可能是单条对象（stream 名）或数组；文档说是数组
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if isinstance(data, list):
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arr = data
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elif isinstance(data, dict):
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# 组合流格式 { "stream": "!ticker@arr", "data": [ ... ] }
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arr = data.get("data") if isinstance(data.get("data"), list) else [data]
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else:
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return
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now_ms = int(time.time() * 1000)
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for t in arr:
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if not isinstance(t, dict):
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continue
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s = (t.get("s") or t.get("symbol") or "").strip()
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if not s or not s.endswith("USDT"):
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continue
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try:
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price = float(t.get("c") or t.get("lastPrice") or 0)
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change_pct = float(t.get("P") or t.get("priceChangePercent") or 0)
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# 成交量：优先 quoteVolume（USDT），文档可能为 q 或 quoteVolume
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vol = float(t.get("quoteVolume") or t.get("q") or t.get("v") or 0)
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except (TypeError, ValueError):
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continue
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_ticker_24h_cache[s] = {
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"symbol": s,
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"price": price,
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"volume": vol,
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"changePercent": change_pct,
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"ts": now_ms,
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}
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_ticker_24h_updated_at = time.monotonic()
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logger.debug(f"Ticker24hStream: 已更新 {len(arr)} 条，缓存共 {len(_ticker_24h_cache)} 个交易对")
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