cista-storage/cista/util/apphelpers.py
Leo Vasanko 073f1a8707 Maintenance update (#7)
- Use modern tooling uv and bun
- Various changes to work with latest PyAV and PIL that have changed their API
- Improved image, video and document previews (uses AVIF, renders AVIF/HEIC/videos in HDR, faster processing)
- Fix a server hang in some cases where a folder was moved or renamed
- Log exceptions instead of only returning 500 response to client
- Log timing of preview generation functions
- Default to quality 50 in previews (previously 40)
2025-08-15 18:03:04 +01:00

69 lines
2.3 KiB
Python

from functools import wraps
import msgspec
from sanic import errorpages
from sanic.exceptions import SanicException
from sanic.log import logger
from sanic.response import raw, redirect
from cista import auth
from cista.protocol import ErrorMsg
def asend(ws, msg):
"""Send JSON message or bytes to a websocket"""
return ws.send(msg if isinstance(msg, bytes) else msgspec.json.encode(msg).decode())
def jres(data, **kwargs):
"""JSON Sanic response, using msgspec encoding"""
return raw(msgspec.json.encode(data), content_type="application/json", **kwargs)
async def handle_sanic_exception(request, e):
context, code = {}, 500
message = str(e)
if isinstance(e, SanicException):
context = e.context or {}
code = e.status_code
if not message or not request.app.debug and code == 500:
message = "Internal Server Error"
message = f"⚠️ {message}" if code < 500 else f"🛑 {message}"
if code == 500:
logger.exception(e)
# Non-browsers get JSON errors
if "text/html" not in request.headers.accept:
return jres(
ErrorMsg({"code": code, "message": message, **context}),
status=code,
)
# Redirections flash the error message via cookies
if "redirect" in context:
res = redirect(context["redirect"])
res.cookies.add_cookie("message", message, max_age=5)
return res
# Otherwise use Sanic's default error page
return errorpages.HTMLRenderer(request, e, debug=request.app.debug).render()
def websocket_wrapper(handler):
"""Decorator for websocket handlers that catches exceptions and sends them back to the client"""
@wraps(handler)
async def wrapper(request, ws, *args, **kwargs):
try:
auth.verify(request)
await handler(request, ws, *args, **kwargs)
except Exception as e:
context, code, message = {}, 500, str(e) or "Internal Server Error"
if isinstance(e, SanicException):
context = e.context or {}
code = e.status_code
message = f"⚠️ {message}" if code < 500 else f"🛑 {message}"
await asend(ws, ErrorMsg({"code": code, "message": message, **context}))
if not getattr(e, "quiet", False) or code == 500:
logger.exception(f"{code} {e!r}")
raise
return wrapper