261 lines
8.8 KiB
Python
261 lines
8.8 KiB
Python
#!/usr/bin/env python3
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from __future__ import annotations
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import json
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import os
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import re
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import time
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from dataclasses import dataclass
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from pathlib import Path
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from typing import Any, Dict, List
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import pymysql
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import requests
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DETAIL_URL_TEMPLATE = "https://json.ncctrials.com/room/{room_id}/detail.json?v={ts}"
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FETCH_BATCH_SIZE = 30
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FETCH_TIMEOUT = 15
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FETCH_ERROR_LIMIT = 500
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ROOM_ID_RE = re.compile(r"/room/(\d+)")
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DETAIL_JSONP_RE = re.compile(r"detail\((\{.*\})\)\s*;?\s*$", re.S)
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DEFAULT_HEADERS = {
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"User-Agent": (
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
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"AppleWebKit/537.36 (KHTML, like Gecko) "
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"Chrome/137.0.0.0 Safari/537.36"
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),
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"Accept": "application/json,text/javascript,*/*;q=0.1",
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"Referer": "https://yyzb1.tv/",
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}
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def parse_match_live_detail_html(body: str) -> dict:
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match = DETAIL_JSONP_RE.search((body or "").strip())
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if not match:
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raise ValueError("detail jsonp not found")
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payload = json.loads(match.group(1))
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stream = payload.get("data", {}).get("stream", {})
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parsed = {
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"play_url_flv": str(stream.get("flv") or "").strip(),
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"play_url_hd_flv": str(stream.get("hdFlv") or "").strip(),
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"play_url_m3u8": str(stream.get("m3u8") or "").strip(),
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"play_url_hd_m3u8": str(stream.get("hdM3u8") or "").strip(),
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}
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if not any(parsed.values()):
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raise ValueError("stream urls empty")
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return parsed
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def choose_next_fetch_at(now_ts: int, has_existing_stream: bool) -> int:
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return int(now_ts) + (600 if has_existing_stream else 60)
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def _safe_int(value: Any, default: int = 0) -> int:
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try:
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return int(value)
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except (TypeError, ValueError):
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return default
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def _trim_error(message: Any) -> str:
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return str(message or "").strip()[:FETCH_ERROR_LIMIT]
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def _derive_room_id(source_url: str) -> str:
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match = ROOM_ID_RE.search(str(source_url or "").strip())
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if not match:
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raise ValueError("room id not found in source_url")
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return match.group(1)
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def _build_detail_url(source_url: str, now_ts: int) -> str:
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room_id = _derive_room_id(source_url)
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return DETAIL_URL_TEMPLATE.format(room_id=room_id, ts=int(now_ts))
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def _has_existing_stream(row: Dict[str, Any]) -> bool:
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return any(
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str(row.get(field) or "").strip()
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for field in ("play_url_m3u8", "play_url_hd_m3u8", "play_url_flv", "play_url_hd_flv")
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)
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def _fetch_stream_payload(source_url: str, now_ts: int) -> Dict[str, str]:
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detail_url = _build_detail_url(source_url, now_ts)
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response = requests.get(detail_url, timeout=FETCH_TIMEOUT, headers=DEFAULT_HEADERS)
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response.raise_for_status()
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return parse_match_live_detail_html(response.text)
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class TaskFileLock:
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def __init__(self, name: str, lock_dir: Path | None = None):
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safe_name = "".join(ch if ch.isalnum() or ch in ("-", "_") else "_" for ch in str(name or "task"))
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self.lock_dir = Path(lock_dir or os.environ.get("DQD_LOCK_DIR") or (Path(__file__).resolve().parent / "data" / "locks"))
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self.path = self.lock_dir / f"{safe_name}.lock"
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self._fp = None
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self._locked = False
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def acquire(self) -> bool:
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self.lock_dir.mkdir(parents=True, exist_ok=True)
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self._fp = open(self.path, "a+b")
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try:
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self._fp.seek(0)
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if os.name == "nt":
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import msvcrt
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msvcrt.locking(self._fp.fileno(), msvcrt.LK_NBLCK, 1)
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else:
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import fcntl
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fcntl.flock(self._fp.fileno(), fcntl.LOCK_EX | fcntl.LOCK_NB)
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self._locked = True
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self._fp.seek(0)
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self._fp.truncate()
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self._fp.write(f"pid={os.getpid()} started_at={int(time.time())}\n".encode("utf-8"))
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self._fp.flush()
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return True
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except (BlockingIOError, OSError):
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self.release()
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return False
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def release(self) -> None:
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if not self._fp:
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return
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try:
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if self._locked and os.name == "nt":
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import msvcrt
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self._fp.seek(0)
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msvcrt.locking(self._fp.fileno(), msvcrt.LK_UNLCK, 1)
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elif self._locked:
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import fcntl
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fcntl.flock(self._fp.fileno(), fcntl.LOCK_UN)
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finally:
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self._fp.close()
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self._fp = None
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self._locked = False
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@dataclass
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class MatchLiveStreamRepository:
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db_config: Dict[str, Any]
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def __post_init__(self) -> None:
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self.prefix = str(self.db_config.get("prefix") or "la_")
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self.conn = pymysql.connect(
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host=self.db_config["host"],
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port=int(self.db_config["port"]),
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user=self.db_config["user"],
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password=self.db_config["password"],
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database=self.db_config["database"],
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charset=self.db_config.get("charset") or "utf8mb4",
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cursorclass=pymysql.cursors.DictCursor,
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autocommit=False,
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)
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def close(self) -> None:
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self.conn.close()
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def load_due_rows(self, now_ts: int, limit: int = FETCH_BATCH_SIZE) -> List[Dict[str, Any]]:
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sql = (
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f"SELECT id, match_id, title, source_url, play_url_flv, play_url_hd_flv, play_url_m3u8, play_url_hd_m3u8 "
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f"FROM `{self.prefix}match_live` "
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f"WHERE `delete_time` IS NULL AND `next_fetch_at` <= %s "
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f"ORDER BY `next_fetch_at` ASC, `id` ASC LIMIT %s"
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)
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with self.conn.cursor() as cur:
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cur.execute(sql, (int(now_ts), int(limit)))
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return list(cur.fetchall() or [])
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def mark_success(self, row_id: int, stream_urls: Dict[str, str], now_ts: int) -> None:
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sql = (
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f"UPDATE `{self.prefix}match_live` SET "
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"`play_url_flv`=%s, `play_url_hd_flv`=%s, `play_url_m3u8`=%s, `play_url_hd_m3u8`=%s, "
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"`fetch_status`=1, `fetch_error`='', `last_fetch_at`=%s, `next_fetch_at`=%s, `update_time`=%s "
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"WHERE `id`=%s"
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)
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next_fetch_at = choose_next_fetch_at(now_ts, has_existing_stream=True)
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with self.conn.cursor() as cur:
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cur.execute(
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sql,
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(
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stream_urls["play_url_flv"],
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stream_urls["play_url_hd_flv"],
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stream_urls["play_url_m3u8"],
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stream_urls["play_url_hd_m3u8"],
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int(now_ts),
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next_fetch_at,
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int(now_ts),
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int(row_id),
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),
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)
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self.conn.commit()
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def mark_failed(self, row_id: int, error_message: str, now_ts: int, has_existing_stream: bool) -> None:
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sql = (
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f"UPDATE `{self.prefix}match_live` SET "
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"`fetch_status`=2, `fetch_error`=%s, `last_fetch_at`=%s, `next_fetch_at`=%s, `update_time`=%s "
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"WHERE `id`=%s"
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)
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with self.conn.cursor() as cur:
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cur.execute(
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sql,
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(
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_trim_error(error_message),
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int(now_ts),
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choose_next_fetch_at(now_ts, has_existing_stream=has_existing_stream),
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int(now_ts),
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int(row_id),
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),
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)
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self.conn.commit()
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def run(db_config: Dict[str, Any]) -> Dict[str, Any]:
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lock = TaskFileLock("match_live_stream")
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if not lock.acquire():
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return {
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"success": True,
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"candidate_count": 0,
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"saved_count": 0,
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"summary_text": "match_live_stream 已在执行中，跳过本次",
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}
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repo = MatchLiveStreamRepository(db_config)
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now_ts = int(time.time())
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success_count = 0
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failed_count = 0
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rows: List[Dict[str, Any]] = []
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try:
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rows = repo.load_due_rows(now_ts, limit=FETCH_BATCH_SIZE)
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for row in rows:
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fetch_ts = int(time.time())
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has_existing_stream = _has_existing_stream(row)
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try:
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stream_urls = _fetch_stream_payload(str(row.get("source_url") or ""), fetch_ts)
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repo.mark_success(_safe_int(row.get("id")), stream_urls, fetch_ts)
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success_count += 1
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except Exception as exc: # noqa: BLE001
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repo.mark_failed(_safe_int(row.get("id")), str(exc), fetch_ts, has_existing_stream)
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failed_count += 1
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candidate_count = len(rows)
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return {
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"success": True,
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"candidate_count": candidate_count,
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"saved_count": success_count,
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"count": success_count,
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"failed_count": failed_count,
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"summary_text": (
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f"赛事直播流抓取完成: 待处理 {candidate_count} 条, "
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f"成功 {success_count} 条, 失败 {failed_count} 条"
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),
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}
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finally:
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repo.close()
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lock.release()
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