gilles
ec87bc091d
- Broadcaster asyncio.Queue avec keepalive 25s (prévient timeout proxy) - Endpoint GET /api/events/stream (StreamingResponse text/event-stream) - Broadcast notes_changed / todos_changed / shopping_changed sur toutes mutations - Hook useServerEvents: EventSource avec reconnexion automatique (3s) - Pages Notes, Todos, Shopping abonnées aux événements SSE - nginx: location SSE dédiée (proxy_buffering off, timeout 24h) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
37 lines
1.0 KiB
Python
37 lines
1.0 KiB
Python
import asyncio
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import json
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from typing import AsyncGenerator
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class EventBroadcaster:
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def __init__(self):
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self._queues: set[asyncio.Queue] = set()
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async def subscribe(self) -> AsyncGenerator[str, None]:
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queue: asyncio.Queue[str] = asyncio.Queue(maxsize=32)
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self._queues.add(queue)
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try:
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while True:
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try:
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msg = await asyncio.wait_for(queue.get(), timeout=25)
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yield msg
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except asyncio.TimeoutError:
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yield ": keepalive\n\n"
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except asyncio.CancelledError:
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pass
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finally:
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self._queues.discard(queue)
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def broadcast(self, event_type: str, data: dict | None = None) -> None:
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if not self._queues:
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return
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msg = f"event: {event_type}\ndata: {json.dumps(data or {})}\n\n"
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for queue in list(self._queues):
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try:
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queue.put_nowait(msg)
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except asyncio.QueueFull:
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pass
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broadcaster = EventBroadcaster()
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