SakurasanandClaude
eb66ab02d0
- services/cache.py 新增 clear_all() 清空整个 cache 表 - daily_collector.py 新增 cache_cleanup_loop() 后台循环：精确 sleep 到最近一个 工作日 9:31 清空缓存，跳过周末，出错1分钟重试 - main.py lifespan 启动清理任务，与采集任务一同优雅退出 与既有"非交易时段 TTL 截止到下次开盘前"的惰性过期形成双保险 Co-Authored-By: Claude <noreply@anthropic.com>
234 lines
9.7 KiB
Python
234 lines
9.7 KiB
Python
"""每日热点数据采集：核心股前100 + 题材涨幅前20，收盘后自动入库
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由 main.lifespan 启动后台任务；幂等（按交易日 UNIQUE 去重）。
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"""
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import asyncio
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import traceback
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from datetime import datetime, time as dtime, timezone, timedelta
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from typing import Optional
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from database import get_connection
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from services.cache import clear_all
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from services.themes import fetch_theme_list, _build_theme_graph
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_CST = timezone(timedelta(hours=8))
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# 每天采集的后台任务：每 300 秒（5 分钟）检查一次
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CHECK_INTERVAL_SECONDS = 300
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COLLECT_AFTER_TIME = dtime(15, 0) # 收盘后 15:00 开始允许采集
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CORE_STOCK_LIMIT = 100 # 题材领涨股涨幅前100
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TOP_THEME_LIMIT = 20 # 题材涨幅前20
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HOTMAP_TOP_N = 50 # 热点穿透采样题材数：涨幅榜+热度榜各取前50，合并（与热点穿透页一致）
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HOTMAP_CORE_LIMIT = 100 # 热点穿透核心股前100（按覆盖题材数降序）
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CORE_COVER_THRESHOLD = 2 # 热点穿透核心股门槛：覆盖题材数 ≥2
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# 每日缓存清理：交易日 9:31 清空全部缓存，保证开盘后数据全新
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CLEANUP_TIME = dtime(9, 31)
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def _is_trading_day(d: datetime) -> bool:
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"""仅按工作日判断：周一至周五视为交易日，不处理法定节假日"""
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return d.weekday() < 5
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def _has_collected(trade_date: str) -> bool:
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"""当日核心股是否已采集"""
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conn = get_connection()
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try:
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row = conn.execute(
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"SELECT 1 FROM daily_core_stocks WHERE trade_date = ? LIMIT 1",
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(trade_date,),
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).fetchone()
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return row is not None
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finally:
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conn.close()
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async def collect_daily(trade_date: str, dry_run: bool = False) -> dict:
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"""采集指定交易日数据并入库。
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核心股 = 题材领涨股涨幅前100 ∪ 热点穿透核心股（覆盖题材数≥2、按覆盖数降序前100），按股票代码去重。
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热点穿透构建失败时降级为仅领涨股前100，不影响当日采集。
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Args:
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trade_date: YYYY-MM-DD
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dry_run: True 只打印不写库（用于验证）
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Returns:
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{"core_count": int, "theme_count": int, "skipped": bool}
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"""
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if _has_collected(trade_date):
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print(f"[collector] {trade_date} 已采集，跳过")
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return {"core_count": 0, "theme_count": 0, "skipped": True}
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# 1. 拉取全部题材列表（含领涨股，作为当日全部股票的采样来源）
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themes = await fetch_theme_list(1, False)
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if not themes:
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print(f"[collector] {trade_date} 题材列表为空（东财失败），跳过")
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return {"core_count": 0, "theme_count": 0, "skipped": True}
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# 领涨题材映射：securityCode -> [(themeCode, themeName), ...]（用于核心股"所属题材"）
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lead_themes: dict[str, list[tuple[str, str]]] = {}
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for t in themes:
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code = t.get("securityCode")
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if not code:
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continue
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lead_themes.setdefault(code, []).append((t["themeCode"], t["themeName"]))
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# 2. 热点穿透核心股：覆盖题材数≥2，按覆盖题材数降序前100（去重）
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# _build_theme_graph 采样 涨幅榜+热度榜 各前 HOTMAP_TOP_N 个题材并拉每股覆盖题材数，
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# 已按 (-coverCount, -f3) 降序；失败时降级为空集，仅保留领涨股。
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hotmap_core: list[dict] = []
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graph_theme_name: dict[str, str] = {}
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try:
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graph = await _build_theme_graph(1, HOTMAP_TOP_N)
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graph_theme_name = {t["themeCode"]: t["themeName"] for t in graph.get("themes", [])}
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hotmap_core = [
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s for s in graph.get("stocks", [])
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if s.get("coverCount", 0) >= CORE_COVER_THRESHOLD
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][:HOTMAP_CORE_LIMIT]
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except Exception as e:
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print(f"[collector] 热点穿透核心股构建失败，降级为仅领涨股: {e}")
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# 3. 题材领涨股涨幅前100：按领涨股 f3 降序，去重（同一股票可能是多个题材领涨股）
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stock_map: dict[str, dict] = {}
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theme_count: dict[str, int] = {} # securityCode -> 领涨题材数
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for t in themes:
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code = t.get("securityCode")
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if not code:
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continue
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theme_count[code] = theme_count.get(code, 0) + 1
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if code not in stock_map or (t.get("f3") or 0) > (stock_map[code].get("f3") or 0):
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stock_map[code] = {
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"stock_code": code,
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"stock_name": t.get("securityName", ""),
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"f3": t.get("f3"),
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}
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f3_core = sorted(stock_map.values(), key=lambda x: -(x["f3"] or 0))[:CORE_STOCK_LIMIT]
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# 4. 题材涨幅前20：bf3 降序
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top_themes = sorted(themes, key=lambda x: -(x.get("bf3") or 0))[:TOP_THEME_LIMIT]
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# 5. 合并去重：热点穿透核心股在前（覆盖数降序，rank 优先），随后补领涨股涨幅前100
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core_stocks: list[dict] = []
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seen: set[str] = set()
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theme_pairs: set[tuple[str, str, str]] = set() # (stock_code, theme_code, theme_name)
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for s in hotmap_core:
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code = s["securityCode"]
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seen.add(code)
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core_stocks.append({
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"stock_code": code,
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"stock_name": s.get("securityName", ""),
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"f3": s.get("f3"),
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"cover_count": s.get("coverCount", 0),
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})
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# 所属题材：采样榜内覆盖的题材 + 全量题材列表中的领涨题材
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for tc in s.get("themeCodes", []):
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theme_pairs.add((code, tc, graph_theme_name.get(tc, tc)))
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for tc, tn in lead_themes.get(code, []):
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theme_pairs.add((code, tc, tn))
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for s in f3_core:
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code = s["stock_code"]
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if code in seen:
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continue
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seen.add(code)
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core_stocks.append({
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"stock_code": code,
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"stock_name": s["stock_name"],
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"f3": s["f3"],
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"cover_count": theme_count.get(code, 0),
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})
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for tc, tn in lead_themes.get(code, []):
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theme_pairs.add((code, tc, tn))
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if dry_run:
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print(f"[collector] {trade_date} 核心股 {len(core_stocks)} 只（热点穿透 {len(hotmap_core)} + 领涨股 {len(f3_core)}），题材前20 {len(top_themes)} 只")
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return {"core_count": len(core_stocks), "theme_count": len(top_themes), "skipped": False}
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# 6. 入库（事务，UNIQUE 幂等）
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conn = get_connection()
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try:
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for i, s in enumerate(core_stocks, start=1):
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conn.execute(
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"INSERT OR IGNORE INTO daily_core_stocks (trade_date, stock_code, stock_name, f3, cover_count, rank) VALUES (?,?,?,?,?,?)",
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(trade_date, s["stock_code"], s["stock_name"], s["f3"], s["cover_count"], i),
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)
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for code, tc, tn in theme_pairs:
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conn.execute(
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"INSERT OR IGNORE INTO daily_core_stock_themes (trade_date, stock_code, theme_code, theme_name) VALUES (?,?,?,?)",
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(trade_date, code, tc, tn),
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)
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for i, t in enumerate(top_themes, start=1):
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conn.execute(
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"INSERT OR IGNORE INTO daily_top_themes (trade_date, theme_code, theme_name, bf3, hot_rank, rank) VALUES (?,?,?,?,?,?)",
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(trade_date, t["themeCode"], t["themeName"], t.get("bf3"), t.get("hotRank"), i),
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)
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conn.commit()
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finally:
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conn.close()
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print(f"[collector] {trade_date} 已采集：核心股 {len(core_stocks)} 只，题材前20 {len(top_themes)} 只")
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return {"core_count": len(core_stocks), "theme_count": len(top_themes), "skipped": False}
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async def collector_loop(stop: Optional[asyncio.Event] = None) -> None:
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"""后台循环：每个交易日 15:00 后自动采集当日数据（幂等）"""
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while True:
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try:
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now = datetime.now(_CST)
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if _is_trading_day(now) and now.time() >= COLLECT_AFTER_TIME:
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trade_date = now.strftime("%Y-%m-%d")
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if not _has_collected(trade_date):
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await collect_daily(trade_date)
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except Exception:
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print("[collector] 采集异常：")
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traceback.print_exc()
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if stop is not None and stop.is_set():
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break
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await asyncio.sleep(CHECK_INTERVAL_SECONDS)
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def _next_cleanup_dt(now: datetime) -> datetime:
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"""计算下一个缓存清理时刻：最近一个工作日 9:31（今天已过则取下一个工作日）"""
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for days in range(0, 8):
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d = (now + timedelta(days=days)).date()
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if d.weekday() >= 5: # 跳过周末
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continue
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dt = datetime(d.year, d.month, d.day, CLEANUP_TIME.hour, CLEANUP_TIME.minute, tzinfo=_CST)
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if dt > now:
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return dt
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return now + timedelta(days=1) # 兜底：理论不可达
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async def cache_cleanup_loop(stop: Optional[asyncio.Event] = None) -> None:
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"""后台循环：每个交易日 9:31 清空全部缓存，保证开盘后读到全新数据
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到点前精确 sleep 至 9:31；若进程在 9:31 后启动，则等下一个交易日。
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"""
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while True:
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try:
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now = datetime.now(_CST)
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next_dt = _next_cleanup_dt(now)
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delay = max(0, int((next_dt - now).total_seconds()))
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if stop is not None:
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try:
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await asyncio.wait_for(stop.wait(), timeout=delay)
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except asyncio.TimeoutError:
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pass # 到点
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if stop.is_set():
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break
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else:
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await asyncio.sleep(delay)
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clear_all()
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print(f"[cache-cleanup] 已清空全部缓存: {datetime.now(_CST).strftime('%Y-%m-%d %H:%M:%S')}")
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except asyncio.CancelledError:
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raise
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except Exception:
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print("[cache-cleanup] 清理异常：")
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traceback.print_exc()
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await asyncio.sleep(60) # 出错 1 分钟后再试
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