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blog.pyaqa.ru/app/main.py
Sergey Vanyushkin 14adcaa3e6
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style: apply ruff formatting to source and test files
2026-05-02 12:05:14 +03:00

92 lines
2.2 KiB
Python

"""Application entry point with DDD architecture."""
from collections.abc import AsyncGenerator
from contextlib import asynccontextmanager
import uvicorn
from dishka import make_async_container
from dishka.integrations.fastapi import setup_dishka
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from app.infrastructure import close_db, init_db, register_exception_handlers, settings
from app.infrastructure.di.providers import (
DatabaseProvider,
KeycloakProvider,
RepositoryProvider,
TransactionManagerProvider,
UseCaseProvider,
)
from app.presentation import router
@asynccontextmanager
async def lifespan(app: FastAPI) -> AsyncGenerator[None]:
"""Application lifespan manager."""
# Startup
await init_db()
yield
# Shutdown
await close_db()
def app_factory() -> FastAPI:
"""Create and configure FastAPI application."""
app = FastAPI(
title=settings.app.name,
debug=settings.app.debug,
lifespan=lifespan,
docs_url="/docs" if settings.is_dev else None,
redoc_url="/redoc" if settings.is_dev else None,
)
# Setup Dishka DI container
container = make_async_container(
DatabaseProvider(),
RepositoryProvider(),
TransactionManagerProvider(),
UseCaseProvider(),
KeycloakProvider(),
)
setup_dishka(container, app)
# Register exception handlers
register_exception_handlers(app)
# CORS middleware
app.add_middleware(
CORSMiddleware,
allow_origins=["*"],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
# Include API routes
app.include_router(router, prefix="/api")
# Health check endpoint
@app.get("/health", tags=["health"])
async def health_check() -> dict[str, str]:
return {
"status": "ok",
"app": settings.app.name,
"env": settings.environment.value,
}
return app
def main() -> None:
"""Run the application."""
uvicorn.run(
app_factory,
factory=True,
host=settings.app.host,
port=settings.app.port,
)
if __name__ == "__main__":
main()