presenton/servers/fastapi/api/lifespan.py

26 lines
861 B
Python

from contextlib import asynccontextmanager
import os
from fastapi import FastAPI
from migrations import migrate_database_on_startup
from services.database import create_db_and_tables
from utils.get_env import get_app_data_directory_env
from utils.model_availability import (
check_llm_and_image_provider_api_or_model_availability,
)
@asynccontextmanager
async def app_lifespan(_: FastAPI):
"""
Lifespan context manager for FastAPI application.
Initializes the application data directory, runs Alembic migrations when
MIGRATE_DATABASE_ON_STARTUP=true, creates any missing tables, and checks
LLM model availability.
"""
os.makedirs(get_app_data_directory_env(), exist_ok=True)
await migrate_database_on_startup()
await create_db_and_tables()
await check_llm_and_image_provider_api_or_model_availability()
yield