Files
Magent/backend/app/main.py

215 lines
7.3 KiB
Python

import asyncio
import logging
import time
import uuid
from typing import Awaitable, Callable
from fastapi import FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from .config import settings
from .db import init_db
from .routers.requests import (
router as requests_router,
startup_warmup_requests_cache,
run_requests_delta_loop,
run_daily_requests_full_sync,
run_daily_db_cleanup,
)
from .routers.auth import router as auth_router
from .routers.admin import router as admin_router, events_router as admin_events_router
from .routers.images import router as images_router
from .routers.branding import router as branding_router
from .routers.status import router as status_router
from .routers.feedback import router as feedback_router
from .routers.site import router as site_router
from .routers.events import router as events_router
from .services.jellyfin_sync import run_daily_jellyfin_sync
from .logging_config import (
bind_request_id,
configure_logging,
reset_request_id,
sanitize_headers,
sanitize_value,
summarize_http_body,
)
from .runtime import get_runtime_settings
logger = logging.getLogger(__name__)
_background_tasks: list[asyncio.Task[None]] = []
app = FastAPI(
title=settings.app_name,
docs_url="/docs" if settings.api_docs_enabled else None,
redoc_url=None,
openapi_url="/openapi.json" if settings.api_docs_enabled else None,
)
app.add_middleware(
CORSMiddleware,
allow_origins=[settings.cors_allow_origin],
allow_credentials=True,
allow_methods=["*"],
allow_headers=["*"],
)
@app.middleware("http")
async def log_requests_and_add_security_headers(request: Request, call_next):
request_id = request.headers.get("X-Request-ID") or uuid.uuid4().hex[:12]
token = bind_request_id(request_id)
request.state.request_id = request_id
started_at = time.perf_counter()
body = await request.body()
body_summary = summarize_http_body(body, request.headers.get("content-type"))
async def receive() -> dict:
return {"type": "http.request", "body": body, "more_body": False}
request._receive = receive
logger.info(
"request started method=%s path=%s query=%s client=%s headers=%s body=%s",
request.method,
request.url.path,
sanitize_value(dict(request.query_params)),
request.client.host if request.client else "-",
sanitize_headers(
{
key: value
for key, value in request.headers.items()
if key.lower()
in {
"content-type",
"content-length",
"user-agent",
"x-forwarded-for",
"x-forwarded-proto",
"x-request-id",
}
}
),
body_summary,
)
try:
response = await call_next(request)
except Exception:
duration_ms = round((time.perf_counter() - started_at) * 1000, 2)
logger.exception(
"request failed method=%s path=%s duration_ms=%s",
request.method,
request.url.path,
duration_ms,
)
reset_request_id(token)
raise
duration_ms = round((time.perf_counter() - started_at) * 1000, 2)
response.headers.setdefault("X-Request-ID", request_id)
response.headers.setdefault("X-Content-Type-Options", "nosniff")
response.headers.setdefault("X-Frame-Options", "DENY")
response.headers.setdefault("Referrer-Policy", "no-referrer")
response.headers.setdefault("Permissions-Policy", "geolocation=(), microphone=(), camera=()")
# Keep API responses non-executable and non-embeddable by default.
if request.url.path not in {"/docs", "/redoc"} and not request.url.path.startswith("/openapi"):
response.headers.setdefault(
"Content-Security-Policy",
"default-src 'none'; frame-ancestors 'none'; base-uri 'none'",
)
logger.info(
"request completed method=%s path=%s status=%s duration_ms=%s response_headers=%s",
request.method,
request.url.path,
response.status_code,
duration_ms,
sanitize_headers(
{
key: value
for key, value in response.headers.items()
if key.lower() in {"content-type", "content-length", "x-request-id"}
}
),
)
reset_request_id(token)
return response
@app.get("/health")
async def health() -> dict:
return {"status": "ok"}
async def _run_background_task(
name: str, coroutine_factory: Callable[[], Awaitable[None]]
) -> None:
token = bind_request_id(f"task-{name}")
logger.info("background task started task=%s", name)
try:
await coroutine_factory()
logger.warning("background task exited task=%s", name)
except asyncio.CancelledError:
logger.info("background task cancelled task=%s", name)
raise
except Exception:
logger.exception("background task crashed task=%s", name)
raise
finally:
reset_request_id(token)
def _launch_background_task(name: str, coroutine_factory: Callable[[], Awaitable[None]]) -> None:
task = asyncio.create_task(
_run_background_task(name, coroutine_factory), name=f"magent:{name}"
)
_background_tasks.append(task)
@app.on_event("startup")
async def startup() -> None:
configure_logging(
settings.log_level,
settings.log_file,
log_file_max_bytes=settings.log_file_max_bytes,
log_file_backup_count=settings.log_file_backup_count,
log_http_client_level=settings.log_http_client_level,
log_background_sync_level=settings.log_background_sync_level,
)
logger.info("startup begin app=%s build=%s", settings.app_name, settings.site_build_number)
init_db()
runtime = get_runtime_settings()
configure_logging(
runtime.log_level,
runtime.log_file,
log_file_max_bytes=runtime.log_file_max_bytes,
log_file_backup_count=runtime.log_file_backup_count,
log_http_client_level=runtime.log_http_client_level,
log_background_sync_level=runtime.log_background_sync_level,
)
logger.info(
"runtime settings applied log_level=%s log_file=%s log_file_max_bytes=%s log_file_backup_count=%s log_http_client_level=%s log_background_sync_level=%s request_source=%s",
runtime.log_level,
runtime.log_file,
runtime.log_file_max_bytes,
runtime.log_file_backup_count,
runtime.log_http_client_level,
runtime.log_background_sync_level,
runtime.requests_data_source,
)
_launch_background_task("jellyfin-sync", run_daily_jellyfin_sync)
_launch_background_task("requests-warmup", startup_warmup_requests_cache)
_launch_background_task("requests-delta-loop", run_requests_delta_loop)
_launch_background_task("requests-full-sync", run_daily_requests_full_sync)
_launch_background_task("db-cleanup", run_daily_db_cleanup)
logger.info("startup complete")
app.include_router(requests_router)
app.include_router(auth_router)
app.include_router(admin_router)
app.include_router(admin_events_router)
app.include_router(images_router)
app.include_router(branding_router)
app.include_router(status_router)
app.include_router(feedback_router)
app.include_router(site_router)
app.include_router(events_router)