Symptom where User ID is not visible in langfuse Trace

[diana-jung]

Env

LiteLLM v1.50.4-stable
Langfuse 2.93.1

  config.yaml: |
    model_list:
    litellm_settings:
      set_verbose: True
      json_logs: true
      num_retries: 2
      success_callback: ["langfuse"]
      failure_callback: ["langfuse"]
      enforced_params:
        - user
        - metadata.generation_name
      drop_params: True
      langfuse_default_tags: ["user_api_key_alias", "user_api_key_user_id" ]

We are doing LiteLLM logging through Langfuse. Basically, we are using the Virtual key to store user_id, key_alias, user, team_id, and metadata as data and using the /key/generate API to generate it.
However, the User information is not shown in the Trace by default.
To solve this, we added the enforced_params: - user value and called the API, and confirmed that the user information is sent in the body.

curl --location 'https://<litllem-url>/chat/completions' \
    --header 'Content-Type: application/json' \
    --header 'Authorization: Bearer sk-7q' \
    --data '{
    "model": "<model>",
    ❗️ "user": "diana.jung", 
    "messages": [
        {
        "role": "user",
        "content": "what llm are you"
        }
    ]
}'

So, in order to reflect this when generating the key, I configured the client as follows, but it seems like the key information is not entered, so it is not reflected in the trace.

'https://<litllem-url>/key/generate',
        {
          models: [],
          user_id: diana.jung, 
          key_alias: diana.jung, 
          user: diana.jung, 
          team_id: team,
          metadata: {
            team: team,
            trace_user_id: diana.jung, 
            name: diana.jung,
            user: diana.jung, 
            phase: "production"
          },
        },
        {
          headers: {
            'Authorization': 'Bearer ',
            'Content-Type': 'application/json'
          }
        }

[ishaan-jaff]

made this an issue @diana-jung #7270

[ishaan-jaff]

this looks like an issue on our side, created an issue to track

[ishaan-jaff]

hi @diana-jung - I do see the user field populated on langfuse

this is my request I sent

curl --location 'http://0.0.0.0:4000/chat/completions' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer sk-vSJzdxxx' \
--data ' {
      "model": "fake-openai-endpoint",
      "user": "hi",
      "messages": [
        {
          "role": "user",
          "content": "testing with user=hi"
        }
      ],
    }
'

[ishaan-jaff]

@diana-jung - can we hop on a call to understand the issue ? I'm unable to repro the problem

Happy to resolve the issue over call

Sharing a link to my cal for your convenience: https://calendly.com/d/4mp-gd3-k5k/litellm-1-1-onboarding-chat