张胜宇
e239eb778b
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42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
from datetime import UTC, datetime
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.model.memory import MemorySyncOutbox
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class ProjectionReconciliationService:
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"""Finds projection events that still need delivery or replay."""
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def __init__(self, session: AsyncSession) -> None:
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self.session = session
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async def pending(self, *, limit: int = 100) -> list[MemorySyncOutbox]:
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now = datetime.now(UTC).replace(tzinfo=None)
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result = await self.session.scalars(
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select(MemorySyncOutbox)
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.where(
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MemorySyncOutbox.status.in_({"pending", "failed"}),
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(
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MemorySyncOutbox.next_retry_at.is_(None)
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| (MemorySyncOutbox.next_retry_at <= now)
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),
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)
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.order_by(MemorySyncOutbox.id)
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.limit(max(1, min(limit, 1000)))
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)
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return list(result)
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async def mark_replay(self, event_uuid: str) -> bool:
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event = await self.session.scalar(
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select(MemorySyncOutbox).where(MemorySyncOutbox.event_uuid == event_uuid)
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)
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if event is None or event.status == "processed":
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return False
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event.status = "pending"
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event.next_retry_at = None
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event.last_error = None
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await self.session.commit()
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return True
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