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oliver
a8d3d2d5ec
Replace hardcoded Asia/Shanghai with host IANA timezone detection for new scheduled jobs across tools, admin API, gateway cron, and store layer. Co-authored-by: Cursor <cursoragent@cursor.com>
200 lines
7.4 KiB
Python
200 lines
7.4 KiB
Python
from __future__ import annotations
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import os
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import sys
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from datetime import datetime, timezone
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from functools import lru_cache
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from zoneinfo import ZoneInfo, available_timezones
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# Windows registry TimeZoneKeyName -> IANA (common subset; unmapped names fall back to offset).
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_WINDOWS_IANA_TZ: dict[str, str] = {
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"Afghanistan Standard Time": "Asia/Kabul",
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"Alaskan Standard Time": "America/Anchorage",
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"Arab Standard Time": "Asia/Riyadh",
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"Arabian Standard Time": "Asia/Dubai",
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"Arabic Standard Time": "Asia/Baghdad",
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"Argentina Standard Time": "America/Buenos_Aires",
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"AUS Central Standard Time": "Australia/Darwin",
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"AUS Eastern Standard Time": "Australia/Sydney",
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"Azores Standard Time": "Atlantic/Azores",
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"Bangladesh Standard Time": "Asia/Dhaka",
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"Canada Central Standard Time": "America/Regina",
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"Cape Verde Standard Time": "Atlantic/Cape_Verde",
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"Caucasus Standard Time": "Asia/Yerevan",
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"Cen. Australia Standard Time": "Australia/Adelaide",
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"Central America Standard Time": "America/Guatemala",
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"Central Asia Standard Time": "Asia/Almaty",
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"Central Brazilian Standard Time": "America/Cuiaba",
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"Central Europe Standard Time": "Europe/Budapest",
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"Central European Standard Time": "Europe/Warsaw",
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"Central Pacific Standard Time": "Pacific/Guadalcanal",
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"Central Standard Time": "America/Chicago",
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"Central Standard Time (Mexico)": "America/Mexico_City",
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"China Standard Time": "Asia/Shanghai",
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"Dateline Standard Time": "Etc/GMT+12",
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"E. Africa Standard Time": "Africa/Nairobi",
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"E. Australia Standard Time": "Australia/Brisbane",
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"E. Europe Standard Time": "Europe/Chisinau",
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"E. South America Standard Time": "America/Sao_Paulo",
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"Eastern Standard Time": "America/New_York",
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"Egypt Standard Time": "Africa/Cairo",
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"Ekaterinburg Standard Time": "Asia/Yekaterinburg",
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"Fiji Standard Time": "Pacific/Fiji",
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"FLE Standard Time": "Europe/Kiev",
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"Georgian Standard Time": "Asia/Tbilisi",
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"GMT Standard Time": "Europe/London",
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"Greenland Standard Time": "America/Godthab",
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"Greenwich Standard Time": "Atlantic/Reykjavik",
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"GTB Standard Time": "Europe/Bucharest",
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"Hawaiian Standard Time": "Pacific/Honolulu",
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"India Standard Time": "Asia/Kolkata",
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"Iran Standard Time": "Asia/Tehran",
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"Israel Standard Time": "Asia/Jerusalem",
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"Jordan Standard Time": "Asia/Amman",
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"Kaliningrad Standard Time": "Europe/Kaliningrad",
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"Korea Standard Time": "Asia/Seoul",
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"Libya Standard Time": "Africa/Tripoli",
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"Line Islands Standard Time": "Pacific/Kiritimati",
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"Magadan Standard Time": "Asia/Magadan",
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"Mauritius Standard Time": "Indian/Mauritius",
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"Mid-Atlantic Standard Time": "Etc/GMT+2",
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"Middle East Standard Time": "Asia/Beirut",
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"Montevideo Standard Time": "America/Montevideo",
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"Morocco Standard Time": "Africa/Casablanca",
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"Mountain Standard Time": "America/Denver",
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"Mountain Standard Time (Mexico)": "America/Chihuahua",
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"Myanmar Standard Time": "Asia/Yangon",
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"N. Central Asia Standard Time": "Asia/Novosibirsk",
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"Namibia Standard Time": "Africa/Windhoek",
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"Nepal Standard Time": "Asia/Kathmandu",
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"New Zealand Standard Time": "Pacific/Auckland",
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"Newfoundland Standard Time": "America/St_Johns",
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"North Asia East Standard Time": "Asia/Ulaanbaatar",
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"North Asia Standard Time": "Asia/Krasnoyarsk",
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"Pacific SA Standard Time": "America/Santiago",
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"Pacific Standard Time": "America/Los_Angeles",
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"Pacific Standard Time (Mexico)": "America/Tijuana",
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"Pakistan Standard Time": "Asia/Karachi",
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"Paraguay Standard Time": "America/Asuncion",
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"Romance Standard Time": "Europe/Paris",
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"Russia Time Zone 10": "Asia/Srednekolymsk",
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"Russia Time Zone 11": "Asia/Kamchatka",
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"Russia Time Zone 3": "Europe/Samara",
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"Russian Standard Time": "Europe/Moscow",
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"SA Eastern Standard Time": "America/Cayenne",
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"SA Pacific Standard Time": "America/Bogota",
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"SA Western Standard Time": "America/La_Paz",
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"SE Asia Standard Time": "Asia/Bangkok",
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"Singapore Standard Time": "Asia/Singapore",
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"South Africa Standard Time": "Africa/Johannesburg",
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"Sri Lanka Standard Time": "Asia/Colombo",
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"Syria Standard Time": "Asia/Damascus",
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"Taipei Standard Time": "Asia/Taipei",
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"Tasmania Standard Time": "Australia/Hobart",
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"Tokyo Standard Time": "Asia/Tokyo",
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"Tonga Standard Time": "Pacific/Tongatapu",
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"Turkey Standard Time": "Europe/Istanbul",
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"US Eastern Standard Time": "America/Indianapolis",
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"US Mountain Standard Time": "America/Phoenix",
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"UTC": "UTC",
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"UTC+12": "Etc/GMT-12",
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"UTC-02": "Etc/GMT+2",
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"UTC-11": "Etc/GMT+11",
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"Venezuela Standard Time": "America/Caracas",
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"Vladivostok Standard Time": "Asia/Vladivostok",
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"W. Australia Standard Time": "Australia/Perth",
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"W. Central Africa Standard Time": "Africa/Lagos",
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"W. Europe Standard Time": "Europe/Berlin",
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"West Asia Standard Time": "Asia/Tashkent",
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"West Pacific Standard Time": "Pacific/Port_Moresby",
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"Yakutsk Standard Time": "Asia/Yakutsk",
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}
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def _validate_iana(name: str) -> str | None:
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tz = str(name or "").strip()
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if not tz:
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return None
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try:
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ZoneInfo(tz)
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except Exception:
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return None
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if tz not in available_timezones() and tz != "UTC":
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# Allow Etc/* aliases even if not enumerated on some platforms.
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if not tz.startswith("Etc/"):
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return None
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return tz
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def _offset_fallback_timezone() -> str:
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local = datetime.now().astimezone()
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offset = local.utcoffset()
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if offset is None:
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return "UTC"
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hours = int(offset.total_seconds() // 3600)
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if hours == 0:
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return "UTC"
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# Etc/GMT sign is inverted: Etc/GMT-8 == UTC+8.
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sign = "-" if hours > 0 else "+"
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return f"Etc/GMT{sign}{abs(hours)}"
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def _windows_system_timezone() -> str | None:
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try:
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import winreg
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except ImportError:
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return None
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try:
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with winreg.OpenKey(
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winreg.HKEY_LOCAL_MACHINE,
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r"SYSTEM\CurrentControlSet\Control\TimeZoneInformation",
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) as key:
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win_name = str(winreg.QueryValueEx(key, "TimeZoneKeyName")[0] or "").strip()
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except Exception:
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return None
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mapped = _WINDOWS_IANA_TZ.get(win_name)
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if mapped:
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return _validate_iana(mapped)
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return None
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def _unix_system_timezone() -> str | None:
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try:
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local_tz = datetime.now().astimezone().tzinfo
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key = getattr(local_tz, "key", None)
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if isinstance(key, str):
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return _validate_iana(key)
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except Exception:
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return None
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return None
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@lru_cache(maxsize=1)
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def default_system_timezone() -> str:
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"""Return the host IANA timezone used as the scheduler default."""
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for candidate in (
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os.environ.get("AIA_SCHEDULER_DEFAULT_TIMEZONE"),
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os.environ.get("TZ"),
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):
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validated = _validate_iana(str(candidate or ""))
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if validated:
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return validated
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if sys.platform == "win32":
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win_tz = _windows_system_timezone()
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if win_tz:
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return win_tz
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else:
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unix_tz = _unix_system_timezone()
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if unix_tz:
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return unix_tz
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offset_tz = _validate_iana(_offset_fallback_timezone())
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return offset_tz or "UTC"
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def reset_default_system_timezone_cache() -> None:
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default_system_timezone.cache_clear()
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__all__ = ["default_system_timezone", "reset_default_system_timezone_cache"]
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