Bryan Van Deusen
31 lines
946 B
Python
31 lines
946 B
Python
"""Cross-process event publishing via Redis.
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This module provides synchronous event publishing for use in Celery tasks.
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The events are consumed by the WebSocket module which broadcasts them to clients.
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"""
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import json
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import redis
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from app.config import get_settings
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# Redis pub/sub channel for cross-process events
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EVENTS_CHANNEL = "gallery_subscriber:events"
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def publish_event(event_type: str, data: dict):
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"""Publish an event to Redis (for use in Celery tasks).
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This is a sync function that can be called from Celery tasks.
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The Quart app subscribes to these events and broadcasts to WebSocket clients.
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Args:
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event_type: Type of event (e.g., "download.started", "download.completed")
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data: Event payload data
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"""
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settings = get_settings()
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r = redis.from_url(settings.redis_url)
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message = json.dumps({"type": event_type, "data": data})
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r.publish(EVENTS_CHANNEL, message)
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r.close()
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