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"""Application implementation - ASGI."""
import os
from fastapi import FastAPI, Request
from fastapi.exceptions import RequestValidationError
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse
from fastapi.staticfiles import StaticFiles
from loguru import logger
from app.config import config
from app.models.exception import HttpException
from app.router import root_api_router
from app.utils import utils
def exception_handler(request: Request, e: HttpException):
return JSONResponse(
status_code=e.status_code,
content=utils.get_response(e.status_code, e.data, e.message),
)
def validation_exception_handler(request: Request, e: RequestValidationError):
return JSONResponse(
status_code=400,
content=utils.get_response(
status=400, data=e.errors(), message="field required"
),
)
def get_application() -> FastAPI:
"""Initialize FastAPI application.
Returns:
FastAPI: Application object instance.
"""
instance = FastAPI(
title=config.project_name,
description=config.project_description,
version=config.project_version,
debug=False,
)
instance.include_router(root_api_router)
instance.add_exception_handler(HttpException, exception_handler)
instance.add_exception_handler(RequestValidationError, validation_exception_handler)
return instance
app = get_application()
# Configures the CORS middleware for the FastAPI app
cors_allowed_origins_str = os.getenv("CORS_ALLOWED_ORIGINS", "")
origins = cors_allowed_origins_str.split(",") if cors_allowed_origins_str else ["*"]
app.add_middleware(
CORSMiddleware,
allow_origins=origins,
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
task_dir = utils.task_dir()
app.mount(
"/tasks", StaticFiles(directory=task_dir, html=True, follow_symlink=True), name=""
)
public_dir = utils.public_dir()
app.mount("/", StaticFiles(directory=public_dir, html=True), name="")
@app.on_event("shutdown")
def shutdown_event():
logger.info("shutdown event")
@app.on_event("startup")
def startup_event():
logger.info("startup event")
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