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Problem Description

External reranker currently doesn't honor the variable ENABLE_FORWARD_USER_INFO_HEADERS

Desired Solution you'd like

It would be great if we could add the handling of ENABLE_FORWARD_USER_INFO_HEADERS

We need more or less the following:

 r = requests.post( 
     f"{self.url}", 
     headers={ 
         "Content-Type": "application/json", 
         "Authorization": f"Bearer {self.api_key}",
          **(
              {
                  "X-OpenWebUI-User-Name": user.name,
                  "X-OpenWebUI-User-Id": user.id,
                  "X-OpenWebUI-User-Email": user.email,
                  "X-OpenWebUI-User-Role": user.role,
              }
              if ENABLE_FORWARD_USER_INFO_HEADERS and user
              else {}
     }, 
     json=payload, 
 ) 

Getting the ENABLE_FORWARD_USER_INFO_HEADERS is straight forward.

from open_webui.env import (
    ENABLE_FORWARD_USER_INFO_HEADERS,
)

But getting the user: UserModel = None is not very clear.

We are calling ExternaReranker from here:

and get_rf is called from here:

Is it enough to use the user variable?

Can you please assist to add that missing feature? @tjbck

Alternatives Considered

None, there is no alternative.

Additional Context

Having that feature it's possible now to track spending on LiteLLM: https://docs.litellm.ai/docs/tutorials/openweb_ui#add-custom-headers-to-spend-tracking

Currently requests using external reranker do not contain information about user, because we do not honor the ENABLE_FORWARD_USER_INFO_HEADERS.