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54 lines
1.3 KiB
54 lines
1.3 KiB
from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker, AsyncSession
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from sqlalchemy.orm import DeclarativeBase
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from sqlalchemy import text
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from config import settings
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class Base(DeclarativeBase):
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pass
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async_engine = create_async_engine(
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settings.DATABASE_URL,
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pool_size=20,
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max_overflow=40,
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pool_pre_ping=True,
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pool_recycle=3600,
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echo=False,
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)
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AsyncSessionLocal = async_sessionmaker(
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async_engine,
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class_=AsyncSession,
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expire_on_commit=False,
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)
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async def init_db():
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async with async_engine.begin() as conn:
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from models import Base as MBase
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await conn.run_sync(MBase.metadata.create_all)
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await _run_migrations()
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async def _run_migrations():
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async with async_engine.begin() as conn:
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await conn.execute(text(
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"ALTER TABLE flow_definitions ADD COLUMN IF NOT EXISTS published_version_id UUID REFERENCES flow_versions(id)"
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))
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await conn.execute(text(
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"ALTER TABLE flow_definitions ADD COLUMN IF NOT EXISTS draft_definition_json JSONB"
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))
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async def get_db():
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async with AsyncSessionLocal() as session:
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try:
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yield session
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await session.commit()
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except Exception:
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await session.rollback()
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raise
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finally:
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await session.close()
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