Files
Nexus/server/background/ip_allowlist_refresh.py
T
Nexus Agent 704764bd7e fix: 订阅白名单多 worker 同步并统一上传上限 500MB
保存 IP 白名单时同步刷新并 Redis 广播 login_* 设置;推送/文件上传与 Nginx 模板对齐为 500MB,避免生产 50m/100m 导致大文件失败。

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-06-11 17:39:26 +08:00

130 lines
4.5 KiB
Python

"""Background task: refresh login subscription IPs every 2 hours.
Data model:
login_subscription_url — URL to fetch (configurable in settings)
login_subscription_ips — IPs from last fetch (completely replaced each time)
login_manual_ips — manually added (never touched by auto-refresh)
login_allowed_ips — combined: subscription + manual (used by auth check)
login_allowlist_enabled — "true" / "false" master switch
"""
from __future__ import annotations
import asyncio
import logging
from dataclasses import dataclass
logger = logging.getLogger("nexus.ip_allowlist_refresh")
REFRESH_INTERVAL = 7200 # 2 hours
_last_refresh_at: str = ""
_last_subscription_count: int = 0
@dataclass(frozen=True)
class RefreshResult:
ok: bool
subscription_ips: tuple[str, ...] = ()
last_refresh: str = ""
subscription_count: int = 0
error: str | None = None
async def ip_allowlist_refresh_loop():
"""Every 2 hours, re-fetch subscription IPs and rebuild combined allowlist."""
logger.info("IP allowlist refresh loop started (interval=%sh)", REFRESH_INTERVAL // 3600)
# Initial refresh shortly after startup
await asyncio.sleep(5)
await do_refresh()
while True:
await asyncio.sleep(REFRESH_INTERVAL)
await do_refresh()
async def do_refresh() -> RefreshResult:
"""Fetch subscription, replace subscription IPs, rebuild combined list."""
return await _do_refresh()
async def _do_refresh() -> RefreshResult:
"""Fetch subscription, replace subscription IPs, rebuild combined list."""
global _last_refresh_at, _last_subscription_count
from server.config import settings
from server.infrastructure.subscription_parser import parse_subscription_content
sub_url = (settings.LOGIN_SUBSCRIPTION_URL or "").strip()
if not sub_url:
return RefreshResult(ok=True)
logger.info("Refreshing subscription IPs from: %s", sub_url[:80])
try:
import httpx
async with httpx.AsyncClient(timeout=20.0) as client:
resp = await client.get(sub_url, follow_redirects=True)
if resp.status_code != 200:
logger.warning("Subscription returned HTTP %s", resp.status_code)
return RefreshResult(ok=False, error=f"订阅链接返回 HTTP {resp.status_code}")
new_sub_ips = parse_subscription_content(resp.text)
except Exception as e:
logger.error("Subscription fetch failed: %s", e)
return RefreshResult(ok=False, error=f"拉取订阅失败: {e}")
# Manual IPs (always preserved)
manual_raw = (settings.LOGIN_MANUAL_IPS or "").strip()
manual_ips = [ip.strip() for ip in manual_raw.split(",") if ip.strip()]
# Combined list: subscription first, then manual (dedup)
seen: set[str] = set()
combined: list[str] = []
for ip in new_sub_ips + manual_ips:
if ip not in seen:
seen.add(ip)
combined.append(ip)
sub_val = ",".join(new_sub_ips)
combined_val = ",".join(combined)
try:
from server.infrastructure.database.session import AsyncSessionLocal
from server.infrastructure.database.setting_repo import SettingRepositoryImpl
from server.infrastructure.settings_broadcast import publish_setting_changes
async with AsyncSessionLocal() as session:
repo = SettingRepositoryImpl(session)
await repo.set("login_subscription_ips", sub_val)
await repo.set("login_allowed_ips", combined_val)
settings.LOGIN_SUBSCRIPTION_IPS = sub_val
settings.LOGIN_ALLOWED_IPS = combined_val
await publish_setting_changes({
"login_subscription_ips": sub_val,
"login_allowed_ips": combined_val,
})
from server.utils.display_time import format_beijing
_last_refresh_at = format_beijing(with_label=False)
_last_subscription_count = len(new_sub_ips)
logger.info(
"Subscription IPs refreshed: %d → combined %d (+ %d manual)",
len(new_sub_ips), len(combined), len(manual_ips),
)
return RefreshResult(
ok=True,
subscription_ips=tuple(new_sub_ips),
last_refresh=_last_refresh_at,
subscription_count=len(new_sub_ips),
)
except Exception as e:
logger.error("Failed to save subscription IPs: %s", e)
return RefreshResult(ok=False, error=f"保存订阅 IP 失败: {e}")
def get_last_refresh_time() -> str:
return _last_refresh_at
def get_subscription_count() -> int:
return _last_subscription_count