I’m seeing some weird behavior with the genesyscloud Python SDK when handling high-concurrency webhook processing. The docs say the SDK handles token refresh automatically, but my logs show a massive spike in 401 Unauthorized errors right after the access token expires. Instead of smooth swapping tokens, the requests seem to pile up and fail before the refresh completes.
I’ve tried wrapping my API calls in a retry loop, but it feels like a hack. Is there a specific configuration for the PlatformClient to force synchronous refresh or a better pattern for managing this in an async worker? Here’s the basic setup I’m using:
from genesyscloud.platform_client import PlatformClient
platform = PlatformClient()
platform.login(client_id, client_secret)
# This fails intermittently with 401
data = platform.conversations_api.get_conversations_message()
The error only happens when multiple threads hit the endpoint within the same second.
The Python SDK isn’t really built for high-concurrency locking like the JS version is. You’re seeing race conditions where multiple threads try to refresh the token simultaneously, causing the 401s.
In Node, we usually handle this by wrapping the SDK instance or using a mutex for the refresh logic. Since you’re on Python, the easiest fix is to ensure you’re sharing a single PureCloudPlatformClientV2 instance across your workers, not creating a new one per request. The internal OAuth flow needs that shared state to work correctly.
If you can’t refactor to a singleton, try this pattern to serialize the refresh:
import threading
from genesyscloud.rest import Configuration
config = Configuration()
config.access_token = "your_token"
# Force single instance usage
client = PureCloudPlatformClientV2(config)
# Wrap calls if needed, though singleton usually fixes it
with threading.Lock():
result = client.api_instance.some_call()
Check if your webhook handler is instantiating the client inside the request scope. That’s the usual culprit.
You’re treating the SDK like a black box. It’s not. The Python implementation has known race conditions when multiple threads hit the same PureCloudPlatformClientV2 instance during token expiry. The internal lock isn’t always granular enough for high-throughput webhook processors.
Don’t wrap individual calls. Wrap the client initialization or use a thread-safe wrapper. Here’s a minimal reproducible pattern that forces a single refresh attempt:
import threading
from genesyscloud.platform_client import PureCloudPlatformClientV2
_client_lock = threading.Lock()
_client = None
def get_client():
global _client
if _client is None:
with _client_lock:
if _client is None:
_client = PureCloudPlatformClientV2()
_client.set_access_token_client('your_client_id', 'your_client_secret')
_client.set_environment('us-east-1')
_client.login()
return _client
This double-checked locking prevents the race condition. But honestly, for high-concurrency, you might want to bypass the SDK’s token management entirely. Use a separate service to fetch and cache the token, then pass the raw token to the SDK or use requests directly. The SDK’s retry logic is brittle under load.
Also, check your webhook payload size. Large payloads can cause timeouts, which exacerbate the token refresh issue. Keep payloads small and use async processing if possible. The CXone API endpoints are fine, but the Python SDK’s internal state management is where you’re hitting friction.