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ksmithandClaude Sonnet 5
14dc340174
Renames the app's display name everywhere (page titles, PWA manifest, TopBar, email subject lines, HMAC signature header) and its internal technical slug from chatapp to ds-chat/ds_chat: the Python package name and console script, the systemd unit and its user/group/paths, the deploy scripts, the Docker container names, and the Postgres database name. The live dev Postgres role stays "chatapp" -- renaming a role requires disconnecting the session using it, which needed a temporary superuser role Claude's auto-mode classifier correctly declined to create unsupervised. Functionally invisible (it's just a login credential), but worth knowing about if this ever needs fully cleaning up by hand. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
import hashlib
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import hmac
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import json
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import logging
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import httpx
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from app.models import EventSubscription
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logger = logging.getLogger(__name__)
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_TIMEOUT_SECONDS = 5.0
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async def deliver_event(subscription: EventSubscription, event_type: str, payload: dict) -> None:
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"""POST a signed event to a subscription's target_url.
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Fire-once, best-effort: no retry/backoff, any failure is logged and
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swallowed rather than raised -- a slow or dead third-party endpoint must
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never affect message delivery to real room members. Safe to run in a
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background asyncio.create_task (unlike the Phase 4 push lesson) because
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there's no DB session involved here, just the already-serialized
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payload and secret -- nothing that can outlive an event loop.
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"""
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body = json.dumps({"event": event_type, "data": payload}).encode()
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signature = hmac.new(subscription.signing_secret.encode(), body, hashlib.sha256).hexdigest()
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try:
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async with httpx.AsyncClient(timeout=_TIMEOUT_SECONDS) as client:
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await client.post(
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subscription.target_url,
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content=body,
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headers={
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"Content-Type": "application/json",
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"X-DS-Chat-Signature": f"sha256={signature}",
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},
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)
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except httpx.HTTPError:
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logger.warning(
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"Failed to deliver %s event to subscription %s", event_type, subscription.id
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)
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