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cadence: support multiple active windows; Asia window commented out

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Refactored CadencePolicy.active_start_hour/active_end_hour into a tuple
of (start, end) hour pairs so additional regional windows can be added
without code changes. Default keeps EU/US-only behaviour identical.

The Asia window (00:00-08:00 UTC — Tokyo + HK + Shanghai) is included
as a commented-out tuple in the dataclass default. Uncomment one line
to enable hourly AI cadence during the Asia session as well.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Giorgio Gilestro 2026-05-16 10:20:05 +01:00
parent 40cfb50e37
commit 6dac8a2c7f
1 changed files with 12 additions and 6 deletions
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18
app/services/cadence.py
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@ -18,11 +18,17 @@ from datetime import datetime, timezone
@dataclass(frozen=True) @dataclass(frozen=True)
class CadencePolicy: class CadencePolicy:
# Active window in UTC. LSE opens 07:00 BST → 07:00 UTC summer, 08:00 UTC # Active trading windows in UTC. A timestamp is "active" if its hour
# winter. NYSE closes 16:00 ET → 21:00 UTC summer, 21:00 UTC winter. The # falls in ANY listed window. Add or remove tuples to change coverage.
# combined EU/US trading window is well covered by 07:00-21:00 UTC. #
active_start_hour: int = 7 # LSE opens 07:00 BST → 07:00 UTC summer / 08:00 UTC winter.
active_end_hour: int = 21 # NYSE closes 16:00 ET → 21:00 UTC summer / 21:00 UTC winter.
# Tokyo trades 09:00-15:00 JST → 00:00-06:00 UTC.
# HK/Shanghai trade 09:30-16:00 local → 01:30-08:00 UTC.
active_windows: tuple[tuple[int, int], ...] = (
(7, 21), # EU/US (LSE open through NYSE close)
# (0, 8), # Asia (Tokyo + HK/Shanghai) — uncomment to add
)
# Minimum gap between successful runs outside the active window. # Minimum gap between successful runs outside the active window.
off_hours_gap_h: float = 4.0 off_hours_gap_h: float = 4.0
weekend_gap_h: float = 12.0 weekend_gap_h: float = 12.0
@ -31,7 +37,7 @@ class CadencePolicy:
now = now or datetime.now(timezone.utc) now = now or datetime.now(timezone.utc)
if now.weekday() >= 5: # Saturday / Sunday if now.weekday() >= 5: # Saturday / Sunday
return False return False
return self.active_start_hour <= now.hour < self.active_end_hour return any(start <= now.hour < end for start, end in self.active_windows)
def min_gap_hours(self, now: datetime | None = None) -> float: def min_gap_hours(self, now: datetime | None = None) -> float:
now = now or datetime.now(timezone.utc) now = now or datetime.now(timezone.utc)