presenton/servers/fastapi/services/database.py
2026-03-03 10:50:11 +05:45

83 lines
3 KiB
Python

from collections.abc import AsyncGenerator
import os
from sqlalchemy.ext.asyncio import (
AsyncEngine,
create_async_engine,
async_sessionmaker,
AsyncSession,
)
from sqlalchemy import text
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 import PresentationModel
from models.sql.slide import SlideModel
from models.sql.presentation_layout_code import PresentationLayoutCodeModel
from models.sql.template import TemplateModel
from models.sql.webhook_subscription import WebhookSubscription
from utils.db_utils import get_database_url_and_connect_args
database_url, connect_args = get_database_url_and_connect_args()
sql_engine: AsyncEngine = create_async_engine(database_url, connect_args=connect_args)
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 container)
container_db_url = "sqlite+aiosqlite:////app/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():
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__,
TemplateModel.__table__,
WebhookSubscription.__table__,
AsyncPresentationGenerationTaskModel.__table__,
],
)
)
# Lightweight schema migration for existing DBs: ensure `presentations.theme` exists.
if database_url.startswith("sqlite"):
result = await conn.execute(text("PRAGMA table_info(presentations)"))
column_names = {row[1] for row in result.fetchall()}
if "theme" not in column_names:
await conn.execute(text("ALTER TABLE presentations ADD COLUMN theme JSON"))
async with container_db_engine.begin() as conn:
await conn.run_sync(
lambda sync_conn: SQLModel.metadata.create_all(
sync_conn,
tables=[OllamaPullStatus.__table__],
)
)