Trying to push proactive notifications to users who finished a web messaging session last week. Running Django 4.2 with Celery 5.3 against Genesys Cloud v2. The pipeline grabs guest IDs from PostgreSQL, then hits the endpoint. Seems straightforward enough. Actually, the queue just stalls.
@genesys/cloud-node- handles the session lifecycle validation before the request even leaves the queue, which is why your Celery workers are just sitting there waiting on a 202 that never resolves. The endpoint you’re hitting expects an active conversationId or a valid guestToken, not a stale guest ID from a week-old PostgreSQL dump.
The API checks the webChatSession status right away. If it’s CLOSED or EXPIRED, the server drops the payload into a silent discard queue. Your Django pipeline is probably sending a POST to /api/v2/conversations/webchat/guests/{guestId}/notifications without a fresh authToken tied to an active session. The JS forces you to re-authenticate the guest context via guests.authGuest() before pushing anything, otherwise the backend rejects it at the middleware layer. You’ll see the same stall if the messageBody exceeds the 2048-character limit or if you’re missing the contentType header. Honestly, the platform docs bury this behavior under the routing section. You’ll waste hours if you don’t verify the session state first. Makes zero sense until you trace the actual HTTP handshake.
Try swapping out the direct guest ID lookup for a session rehydration call. You need to grab the conversationId first, then attach the notification payload to an active routing group.
// Rehydrate session before pushing
const session = await platformClient.webChatSessions.getWebChatSession(sessionId);
if (session.status === 'CLOSED') throw new Error('Session expired');
const payload = {
body: "Your appointment is confirmed.",
contentType: "text/plain",
conversationId: session.conversationId
};
await platformClient.notifications.postNotifications(payload);
The queue stalls because the backend is waiting for a handshake that never happens. Check the x-correlation-id in your Celery logs.
Pushing notifications to expired web messaging guests without validating the token state first causes the queue to hang. The API rejects the payload because the guest session is no longer active, but the worker waits for a response that never comes back as a success. It's a common trap when pulling IDs from a database dump. Queue just stalls. Worker hangs.
Code
```python
# Validate guest status before building the notification payload
guest_status_response = requests.get(
f"https://{org_domain}.mypurecloud.com/api/v2/conversations/webmessaging/guests/{guest_id}/status",
headers={"Authorization": f"Bearer {access_token}"}
)
state = guest_status_response.json().get(“state”)
if state == “EXPIRED” or state == “CLOSED”:
Skip the push. Don’t hit the notification endpoint with dead tokens.
logger.warning(f"Guest {guest_id} is expired, skipping push")
<h3>Error</h3>
`401 Unauthorized: Invalid guest token`. The worker thread blocks on the HTTP call. The client library retries automatically on these specific error codes, filling up the Celery queue fast. You'll see the task status stuck on `PENDING` while the API returns hard failures.
<h3>Question</h3>
Is the retry logic in the Celery task configured to stop on client errors, or is it looping indefinitely on the 4xx responses?