Your Name
99201f48fd
Root cause: BaseHTTPMiddleware.call_next() runs the endpoint in a separate async task, which breaks SQLAlchemy's greenlet context. After session.commit(), the connection is released to the pool. When session.refresh() tries to acquire a new connection for a SELECT, it fails with MissingGreenlet because the greenlet spawn context is not available in the call_next() task. Fix (two-part): 1. Convert all 4 middleware classes from BaseHTTPMiddleware to pure ASGI middleware — eliminates call_next() entirely so the entire request chain runs in the same async context. 2. Set expire_on_commit=False on the session factory — after commit, objects retain their in-memory values instead of being expired. This removes the need for session.refresh() entirely. All session.refresh() calls removed from 11 repository files. With expire_on_commit=False, post-commit attribute access no longer triggers lazy loads that would also fail with MissingGreenlet. Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
32 lines
1.1 KiB
Python
32 lines
1.1 KiB
Python
"""Nexus — Setting Repository (Async SQLAlchemy)"""
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from typing import Optional, List
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from server.domain.models import Setting
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class SettingRepositoryImpl:
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def __init__(self, session: AsyncSession):
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self.session = session
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async def get(self, key: str) -> Optional[str]:
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result = await self.session.execute(select(Setting).where(Setting.key == key))
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setting = result.scalar_one_or_none()
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return setting.value if setting else None
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async def set(self, key: str, value: str) -> Setting:
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result = await self.session.execute(select(Setting).where(Setting.key == key))
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setting = result.scalar_one_or_none()
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if setting:
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setting.value = value
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else:
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setting = Setting(key=key, value=value)
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self.session.add(setting)
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await self.session.commit()
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return setting
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async def get_all(self) -> List[Setting]:
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result = await self.session.execute(select(Setting).order_by(Setting.key))
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return list(result.scalars().all()) |