Jeason
20dfda28e3
- timer: 多NTP源取中位数提高精度,新增wait_until_early提前触发 - snatcher: 并发2个tab竞争抢购,reload用commit级别不等渲染 - snatcher: 重试间隔从300ms降到50ms,最大重试5次 - snatcher: 用waitForSelector替代固定sleep,按钮出现即点击 - snatcher: 开售前500ms发起reload,抢占先机 - main.py: 同步所有优化
70 lines
2.4 KiB
Python
70 lines
2.4 KiB
Python
import time
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import asyncio
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import ntplib
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from datetime import datetime
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class PrecisionTimer:
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def __init__(self):
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self.offset = 0 # 服务器时间 - 本地时间
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def sync_time(self):
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"""多次 NTP 同步取中位数，提高精度"""
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offsets = []
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servers = ['ntp.aliyun.com', 'ntp.tencent.com', 'pool.ntp.org']
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for server in servers:
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try:
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client = ntplib.NTPClient()
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resp = client.request(server, version=3)
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offsets.append(resp.tx_time - time.time())
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except Exception:
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continue
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if offsets:
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offsets.sort()
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self.offset = offsets[len(offsets) // 2]
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print(f"时间同步完成，偏移量: {self.offset:.3f}s (采样{len(offsets)}个)")
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else:
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print("NTP同步失败，将使用系统时间")
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def get_server_time(self):
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return time.time() + self.offset
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async def wait_until(self, target_time_str):
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"""等待直到目标时间，最后阶段忙等保证精度"""
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target_dt = datetime.strptime(target_time_str, "%Y-%m-%d %H:%M:%S")
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target_ts = target_dt.timestamp()
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print(f"等待目标时间: {target_time_str}")
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while True:
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now = self.get_server_time()
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remaining = target_ts - now
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if remaining <= 0:
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print("目标时间已到！")
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break
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elif remaining > 10:
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await asyncio.sleep(remaining - 10)
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elif remaining > 2:
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await asyncio.sleep(0.5)
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elif remaining > 0.1:
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await asyncio.sleep(0.01)
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# remaining <= 0.1: 忙等，不 sleep
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async def wait_until_early(self, target_time_str, early_ms=500):
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"""提前 early_ms 毫秒触发，用于需要预操作的场景"""
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target_dt = datetime.strptime(target_time_str, "%Y-%m-%d %H:%M:%S")
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target_ts = target_dt.timestamp() - (early_ms / 1000.0)
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while True:
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now = self.get_server_time()
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remaining = target_ts - now
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if remaining <= 0:
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break
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elif remaining > 10:
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await asyncio.sleep(remaining - 10)
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elif remaining > 2:
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await asyncio.sleep(0.5)
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elif remaining > 0.1:
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await asyncio.sleep(0.01)
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