d42cee2f1a
在多个流处理模块中引入 `_task_done_callback` 函数，确保在异步任务完成后能够捕获并记录异常，避免未处理的任务异常导致的潜在问题。此改动提升了系统的稳定性和错误处理能力，确保在执行异步操作时能够更好地管理任务状态。
251 lines
10 KiB
Python
251 lines
10 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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支持多进程共用：Leader 写 Redis，所有进程可通过 refresh_ticker_24h_from_redis_loop 从 Redis 更新本地缓存。
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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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def _task_done_callback(task: asyncio.Task) -> None:
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"""消费 fire-and-forget 任务异常，避免 'Task exception was never retrieved'"""
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try:
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task.result()
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except asyncio.CancelledError:
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pass
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except Exception as e:
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logger.debug("Ticker24hStream background task error: %s", e)
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try:
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from .market_ws_leader import KEY_TICKER_24H
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except ImportError:
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KEY_TICKER_24H = "market:ticker_24h"
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KEY_TICKER_24H_UPDATED_AT = "market:ticker_24h:updated_at"
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# 进程内不再保留全量：有 Redis 时只维护“最后更新时间”，数据全部从 Redis 按需读
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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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_TICKER_24H_CACHE_MAX_KEYS = 500 # 仅无 Redis 时使用
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def get_tickers_24h_cache() -> Dict[str, Dict[str, Any]]:
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"""无 Redis 降级时返回进程内缓存；有 Redis 时应使用 get_tickers_24h_from_redis。"""
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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（由 refresh 从 Redis 回写 updated_at）。"""
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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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"""是否有可用数据（有 Redis 时由 refresh 更新 _ticker_24h_updated_at 为 Redis 的 time.time）。"""
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return _ticker_24h_updated_at > 0 and (time.time() - _ticker_24h_updated_at) <= max_age_sec
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async def get_tickers_24h_from_redis(redis_cache: Any) -> Dict[str, Dict[str, Any]]:
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"""从 Redis 按需读取全量 24h ticker，进程内不保留，减轻内存。"""
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if not redis_cache:
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return get_tickers_24h_cache()
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try:
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data = await redis_cache.get(KEY_TICKER_24H)
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return dict(data) if isinstance(data, dict) else {}
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except Exception as e:
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logger.debug("get_tickers_24h_from_redis: %s", e)
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return get_tickers_24h_cache()
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# Leader 写 Redis 时串行化，避免并发 merge 导致多份全量缓存在内存堆积（单进程 800MB+）
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_REDIS_MERGE_LOCK: Optional[asyncio.Lock] = None
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_REDIS_TICKER_24H_MAX_KEYS = 600 # Redis 内最多保留 USDT 数量，防止 key 无限增长
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def _get_ticker_24h_merge_lock() -> asyncio.Lock:
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global _REDIS_MERGE_LOCK
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if _REDIS_MERGE_LOCK is None:
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_REDIS_MERGE_LOCK = asyncio.Lock()
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return _REDIS_MERGE_LOCK
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class Ticker24hStream:
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"""订阅合约 !ticker@arr，持续更新 _ticker_24h_cache。Leader 时可选写 Redis 供多进程读。"""
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def __init__(self, testnet: bool = False, redis_cache: Any = None):
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self.testnet = testnet
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self._redis_cache = redis_cache
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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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err_msg = getattr(e, "message", str(e)) or repr(e)
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err_type = type(e).__name__
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logger.warning(
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"Ticker24hStream: WS 异常 %s: %s，10s 后重连",
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err_type, err_msg,
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exc_info=logger.isEnabledFor(logging.DEBUG),
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)
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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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if isinstance(data, list):
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arr = data
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elif isinstance(data, dict):
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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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new_items = {}
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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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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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new_items[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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if not new_items:
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return
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# 有 Redis 时只写 Redis；串行化合并，避免多任务同时拉全量导致 Leader 进程内存暴增
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if self._redis_cache:
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try:
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t = asyncio.create_task(
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self._merge_and_write_ticker_24h_to_redis_serialized(new_items)
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)
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t.add_done_callback(_task_done_callback)
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except Exception as e:
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logger.debug("Ticker24hStream: 写入 Redis 调度失败 %s", e)
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return
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# 无 Redis 时才写进程内存
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for s, v in new_items.items():
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_ticker_24h_cache[s] = v
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_ticker_24h_updated_at = time.monotonic()
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if len(_ticker_24h_cache) > _TICKER_24H_CACHE_MAX_KEYS:
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keys = list(_ticker_24h_cache.keys())
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for k in keys[_TICKER_24H_CACHE_MAX_KEYS:]:
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del _ticker_24h_cache[k]
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logger.debug(f"Ticker24hStream: 已更新 {len(new_items)} 条，缓存共 {len(_ticker_24h_cache)} 个交易对")
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async def _merge_and_write_ticker_24h_to_redis_serialized(self, new_items: Dict[str, Dict[str, Any]]) -> None:
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"""串行化：同一时刻仅一个 merge 执行，避免多份全量缓存在内存堆积。"""
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lock = _get_ticker_24h_merge_lock()
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async with lock:
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await self._merge_and_write_ticker_24h_to_redis(new_items)
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async def _merge_and_write_ticker_24h_to_redis(self, new_items: Dict[str, Dict[str, Any]]) -> None:
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"""从 Redis 读出、合并新数据、写回，并写更新时间供 refresh 只拉时间不拉全量。限制 key 数量防 Redis 膨胀。"""
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try:
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if not self._redis_cache:
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return
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existing = await self._redis_cache.get(KEY_TICKER_24H)
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merged = dict(existing) if isinstance(existing, dict) else {}
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merged.update(new_items)
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# 只保留 USDT 且限制数量，防止 key 无限增长
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usdt_only = {k: v for k, v in merged.items() if isinstance(k, str) and k.endswith("USDT")}
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if len(usdt_only) > _REDIS_TICKER_24H_MAX_KEYS:
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keys = list(usdt_only.keys())[-_REDIS_TICKER_24H_MAX_KEYS:]
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usdt_only = {k: usdt_only[k] for k in keys}
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await self._redis_cache.set(KEY_TICKER_24H, usdt_only, ttl=120)
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await self._redis_cache.set(KEY_TICKER_24H_UPDATED_AT, time.time(), ttl=120)
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except Exception as e:
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logger.debug("Ticker24hStream: 写入 Redis 失败 %s", e)
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async def refresh_ticker_24h_from_redis_loop(redis_cache: Any, interval_sec: float = 2.0) -> None:
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"""只从 Redis 拉取「更新时间」，不拉全量数据，进程内不保留 500 条以省内存。"""
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global _ticker_24h_updated_at
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if redis_cache is None:
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return
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while True:
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try:
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await asyncio.sleep(interval_sec)
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raw = await redis_cache.get(KEY_TICKER_24H_UPDATED_AT)
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if raw is not None:
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try:
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t = float(raw)
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_ticker_24h_updated_at = t if t > 0 else time.monotonic()
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except (TypeError, ValueError):
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_ticker_24h_updated_at = time.monotonic()
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logger.debug("Ticker24h: 已同步 Redis 更新时间（进程内不缓存全量）")
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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.debug("Ticker24h: 从 Redis 刷新更新时间失败 %s", e)
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