presenton/servers/fastapi/services/database.py

100 lines
3.7 KiB
Python

from collections.abc import AsyncGenerator
import os
from sqlalchemy.ext.asyncio import (
AsyncEngine,
create_async_engine,
async_sessionmaker,
AsyncSession,
)
from sqlmodel import SQLModel
from models.sql.async_presentation_generation_status import (
AsyncPresentationGenerationTaskModel,
)
from models.sql.image_asset import ImageAsset
from models.sql.key_value import KeyValueSqlModel
from models.sql.ollama_pull_status import OllamaPullStatus
from models.sql.presentation_layout_code import PresentationLayoutCodeModel
from models.sql.presentation import PresentationModel
from models.sql.template import TemplateModel
from models.sql.template_create_info import TemplateCreateInfoModel
from models.sql.slide import SlideModel
from models.sql.webhook_subscription import WebhookSubscription
from utils.get_env import get_app_data_directory_env
from utils.get_env import get_migrate_database_on_startup_env
from utils.db_utils import get_database_url_and_connect_args, get_pool_kwargs
database_url, connect_args = get_database_url_and_connect_args()
# Apply connection-pool settings for server-class databases (PostgreSQL, MySQL).
# SQLite uses a file-lock model and ignores pool configuration, so we skip it.
_pool_kwargs = get_pool_kwargs() if "sqlite" not in database_url else {}
sql_engine: AsyncEngine = create_async_engine(
database_url, connect_args=connect_args, **_pool_kwargs
)
async_session_maker = async_sessionmaker(sql_engine, expire_on_commit=False)
async def get_async_session() -> AsyncGenerator[AsyncSession, None]:
async with async_session_maker() as session:
yield session
# Container DB (Lives inside the app data directory)
_app_data_dir = get_app_data_directory_env() or "/tmp/presenton"
container_db_url = f"sqlite+aiosqlite:///{os.path.join(_app_data_dir, 'container.db')}"
container_db_engine: AsyncEngine = create_async_engine(
container_db_url, connect_args={"check_same_thread": False}
)
container_db_async_session_maker = async_sessionmaker(
container_db_engine, expire_on_commit=False
)
async def get_container_db_async_session() -> AsyncGenerator[AsyncSession, None]:
async with container_db_async_session_maker() as session:
yield session
# Create Database and Tables
async def create_db_and_tables():
should_run_alembic = get_migrate_database_on_startup_env() in ["true", "True"]
if not should_run_alembic:
async with sql_engine.begin() as conn:
await conn.run_sync(
lambda sync_conn: SQLModel.metadata.create_all(
sync_conn,
tables=[
PresentationModel.__table__,
SlideModel.__table__,
KeyValueSqlModel.__table__,
ImageAsset.__table__,
PresentationLayoutCodeModel.__table__,
TemplateCreateInfoModel.__table__,
TemplateModel.__table__,
WebhookSubscription.__table__,
AsyncPresentationGenerationTaskModel.__table__,
],
)
)
async with container_db_engine.begin() as conn:
await conn.run_sync(
lambda sync_conn: SQLModel.metadata.create_all(
sync_conn,
tables=[OllamaPullStatus.__table__],
)
)
async def dispose_engines():
"""Dispose all engine connection pools.
Call this during application shutdown (e.g. in a FastAPI ``shutdown``
event or lifespan context) to release every connection back to the
database and prevent stale / leaked connections.
"""
await sql_engine.dispose()
await container_db_engine.dispose()