mirror of
https://github.com/Dispatcharr/Dispatcharr.git
synced 2026-07-18 00:55:50 +00:00
c33d456743
- Enable gevent cooperative multitasking in all uWSGI worker configs (gevent-early-monkey-patch + import dispatcharr.gevent_patch) - Rewrite WebSocket group sends to bypass asyncio in gevent workers: _gevent_ws_send() replicates the channels_redis 4.x wire format directly via synchronous Redis so send_websocket_update() and _send_async() no longer fail silently after epoll is patched out - Fix PostgreSQL connection exhaustion: CONN_MAX_AGE=0 + explicit close_old_connections() in stream manager and cleanup watchdog loops - Fix stream proxy race: register client before the connect-wait loop so the cleanup watchdog never sees zero clients on a live channel - Channel list/logo/profile queryset optimisations: conditional DISTINCT, EXISTS semi-joins for filter-options, channel_count annotation to eliminate N+1 in LogoSerializer, prefetched memberships in ChannelProfileSerializer - JsonResponse for channel ID list and summary endpoints
54 lines
2 KiB
Python
54 lines
2 KiB
Python
"""
|
|
Loaded via uWSGI's `import = dispatcharr.gevent_patch` directive.
|
|
|
|
Two things happen here:
|
|
|
|
1. gevent stdlib monkey-patching - replaces blocking socket/threading/os
|
|
primitives with gevent-cooperative versions. `gevent-early-monkey-patch = true`
|
|
in the ini should already have done this; calling it again is a safe no-op if
|
|
it did, and a necessary fallback if it didn't (e.g. older uWSGI build).
|
|
|
|
2. psycogreen - installs a wait callback on psycopg2 so libpq yields to the
|
|
gevent hub during I/O instead of blocking the OS thread.
|
|
|
|
Without (1), `async_to_sync(channel_layer.group_send)` in send_websocket_update
|
|
would call epoll_wait() directly, freezing every greenlet on the worker (the
|
|
90s pile-up observed on Worker 9). With (1), select.epoll is removed by
|
|
monkey-patching, which breaks asyncio event loop creation in threadpool threads.
|
|
send_websocket_update therefore uses a synchronous Redis path in gevent workers
|
|
instead of asyncio - see _gevent_ws_send() in core/utils.py.
|
|
|
|
Without (2), psycopg2 network calls pin the worker during slow/stalled queries.
|
|
|
|
Celery and Daphne run in separate daemon processes and do not load this module.
|
|
|
|
Note: this module runs before Django configures logging, so print() is used
|
|
instead of logger so output reaches uWSGI's stdout.
|
|
"""
|
|
import sys
|
|
|
|
from gevent import monkey
|
|
|
|
if not monkey.is_module_patched("socket"):
|
|
print(
|
|
"[gevent_patch] WARNING: gevent-early-monkey-patch did not run - "
|
|
"applying monkey.patch_all() now.",
|
|
file=sys.stderr,
|
|
flush=True,
|
|
)
|
|
monkey.patch_all()
|
|
else:
|
|
print("[gevent_patch] gevent stdlib monkey-patching already active.", flush=True)
|
|
|
|
try:
|
|
from psycogreen.gevent import patch_psycopg
|
|
patch_psycopg()
|
|
print("[gevent_patch] psycogreen: psycopg2 patched for gevent.", flush=True)
|
|
except ImportError:
|
|
print(
|
|
"[gevent_patch] WARNING: psycogreen not installed - "
|
|
"psycopg2 will block the gevent hub during DB I/O. "
|
|
"Run: uv pip install psycogreen",
|
|
file=sys.stderr,
|
|
flush=True,
|
|
)
|