301 errors (moved permanently) when using python sdk

[bramvdh]

Using the latest python sdk, v2.57.0,
I am getting 301 errors for the /api/public/ingestion route

(b'HTTP/1.1', 301, b'Moved Permanently',[
(b'Date', b'Wed, 18 Dec 2024 10:16:54 GMT'),
(b'Content-Type', b'text/html'),
(b'Content-Length', b'167'),
(b'Connection', b'keep-alive'),
(b'Cache-Control', b'max-age=3600'),
(b'Expires', b'Wed, 18 Dec 2024 11:16:54 GMT'),
(b'Location', b'https://cloud.langfuse.com/api/public/ingestion'),
(b'Report-To', b'{"endpoints":[{"url":"https:\\/\\/a.nel.cloudflare.com\\/report\\/v4?s=mnAhKP8P1FJ6QGPQX63629Y1cOJZDel5TuQKeDBe4NADLwHkE6Ep%2B7qlircDR3v11qY%2BSK%2BL6hctTGK9rUTeaQqrKp6mHSFyB49CcxpxeF5biMQTMjauctkl9Hrfy8gGkcq8SQ%3D%3D"}],"group":"cf-nel","max_age":604800}'), (b'NEL', b'{"success_fraction":0,"report_to":"cf-nel","max_age":604800}'),
(b'Vary', b'Accept-Encoding'),
(b'Server', b'cloudflare'),
(b'CF-RAY', b'----'),
(b'server-timing', b'cfL4;desc="?proto=TCP&rtt=13222&min_rtt=12196&rtt_var=5308&sent=6&recv=10&lost=0&retrans=0&sent_bytes=2111&recv_bytes=4332&delivery_rate=96481&cwnd=237&unsent_bytes=0&cid=0000000000000000&ts=0&x=0"')])
DEBUG:httpcore.http11:receive_response_body.started request=<Request [b'POST']>

from what I can tell, triggered in
langfuse/decorators/langfuse_decorator.py @ _sync_observe function

has anything changed in the APIs for the cloud solution?

[dosubot[bot]]

Hey there, @bramvdh! I'm here to help you with any bugs, questions, or contributions you have. Let's tackle this together!

Yes, there have been changes in the API endpoint configurations for the Langfuse cloud solution. The /api/public/ingestion endpoint is now asynchronous, and it seems that the base URL might have changed, which could be causing the 301 redirect error you are encountering. The Location header in the 301 response indicates that the correct URL is https://cloud.langfuse.com/api/public/ingestion ^[1].

To resolve this, ensure that your Python SDK is configured to use the correct base URL. You can set the base_url parameter when initializing the client to the new URL. If you are self-hosting or using a specific data region, make sure the LANGFUSE_HOST environment variable is set correctly. Here is an example of how you might configure the base URL:

from langfuse.openai import OpenAI

# Configure the OpenAI client to use the correct base URL
client = OpenAI(
    base_url='https://cloud.langfuse.com',
    api_key='your_api_key',  # replace with your actual API key
)

This should help in handling the 301 redirects by pointing your requests to the correct endpoint.

To continue talking to Dosu, mention @dosu.

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[marcklingen]

Thanks for reporting, turned this into a bug report: #4769

[hassiebp]

@bramvdh Have you set the Langfuse host manually? It is important to specify https protocol and not http in the Langfuse host variable.

Also, do you see this for all your requests?

[bramvdh]

oh... that was indeed the case, good catch...
the error code was not pointing in this direction for me. thx for the quick support. ok to close

[hassiebp]

Awesome, thanks for letting us know! 🙏🏾