42 lines
1.5 KiB
Python
42 lines
1.5 KiB
Python
"""FastAPI application factory and lifecycle.
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Startup runs migrations and opens the database engine; shutdown disposes it so no
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connection or engine resource leaks. The engine, session factory, and config live
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on ``app.state`` for dependencies to use. The app binds to 127.0.0.1 by default
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and exposes the versioned ``/api/v1`` surface; US01-02 ships only health.
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"""
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from __future__ import annotations
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from contextlib import asynccontextmanager
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from fastapi import FastAPI
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from photo_pipeline.api.routes import health
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from photo_pipeline.config import Config
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from photo_pipeline.db import create_db_engine, create_session_factory, run_migrations
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from photo_pipeline.logging import configure_logging
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def create_app(config: Config | None = None) -> FastAPI:
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config = config or Config.from_env()
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configure_logging(config.log_level, config.log_format)
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@asynccontextmanager
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async def lifespan(app: FastAPI):
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config.database_path.parent.mkdir(parents=True, exist_ok=True)
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run_migrations(config.database_url)
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engine = create_db_engine(config.database_url)
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app.state.config = config
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app.state.engine = engine
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app.state.session_factory = create_session_factory(engine)
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try:
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yield
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finally:
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engine.dispose()
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app.state.engine = None
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app = FastAPI(title="Photo Pipeline", version="0.1.0", lifespan=lifespan)
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app.include_router(health.router, prefix="/api/v1")
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return app
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