40 lines
1.0 KiB
Python
40 lines
1.0 KiB
Python
from collections.abc import AsyncGenerator
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from datetime import datetime
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from sqlalchemy import DateTime, func
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
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from app.config import settings
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class Base(DeclarativeBase):
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pass
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class TimestampMixin:
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created_at: Mapped[datetime] = mapped_column(
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DateTime, server_default=func.now(), nullable=False
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)
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updated_at: Mapped[datetime] = mapped_column(
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DateTime, server_default=func.now(), onupdate=func.now(), nullable=False
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)
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engine = create_async_engine(
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settings.database_url,
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echo=settings.app_debug,
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future=True,
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pool_size=20,
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max_overflow=30,
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pool_recycle=3600,
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pool_pre_ping=True,
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)
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AsyncSessionLocal = async_sessionmaker(engine, expire_on_commit=False, class_=AsyncSession)
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async def get_db() -> AsyncGenerator[AsyncSession, None]:
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async with AsyncSessionLocal() as session:
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yield session
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