mirror of
https://github.com/azaion/gps-denied-onboard.git
synced 2026-04-22 22:46:36 +00:00
Oleksandr Bezdieniezhnykh
50 lines
1.4 KiB
Python
50 lines
1.4 KiB
Python
from typing import AsyncGenerator
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from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine, async_sessionmaker
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from sqlalchemy.orm import DeclarativeBase
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from models.config import DatabaseConfig
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class Base(DeclarativeBase):
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pass
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_engine = None
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_session_factory = None
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def get_engine(config: DatabaseConfig):
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global _engine
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if _engine is None:
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url = f"postgresql+asyncpg://{config.username}:{config.password}@{config.host}:{config.port}/{config.database}"
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_engine = create_async_engine(
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url,
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pool_size=config.pool_size,
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max_overflow=config.max_overflow,
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pool_timeout=config.pool_timeout,
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pool_recycle=config.pool_recycle,
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)
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return _engine
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def get_session_factory(config: DatabaseConfig):
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global _session_factory
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if _session_factory is None:
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engine = get_engine(config)
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_session_factory = async_sessionmaker(engine, expire_on_commit=False)
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return _session_factory
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async def get_session(config: DatabaseConfig) -> AsyncGenerator[AsyncSession, None]:
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factory = get_session_factory(config)
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async with factory() as session:
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yield session
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async def init_db(config: DatabaseConfig) -> None:
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engine = get_engine(config)
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async with engine.begin() as conn:
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from .models import Base
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await conn.run_sync(Base.metadata.create_all)
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