
    {h                          d Z ddlmZmZmZmZmZmZ ddlm	Z	m
Z
 ddlmZmZ ddlmZmZ ddlmZmZmZ ddlmZmZmZ dZd	Zd
ededefdZ G d de      Zy)"LiteLLM Router as LangChain Model.    )AnyAsyncIteratorIteratorListMappingOptional)AsyncCallbackManagerForLLMRunCallbackManagerForLLMRun)agenerate_from_streamgenerate_from_stream)AIMessageChunkBaseMessage)ChatGenerationChatGenerationChunk
ChatResult)ChatLiteLLM_convert_delta_to_message_chunk_convert_dict_to_messagetoken_usagemodel_extrausageparamsreturnc                 H    t         | i}|d   }|D ]  }||vs||   ||<    |S )z%Get llm output from usage and params.metadata)token_usage_key_name)r   r   
llm_outputr   keys        h/var/www/html/engine/venv/lib/python3.12/site-packages/langchain_community/chat_models/litellm_router.pyget_llm_outputr!      sB    &.Jj!H ,j &smJsO,     c                       e Zd ZU dZeed<   dededdf fdZedefd       Z	deddfd	Z
d
eddfdZ	 	 	 ddee   deee      dee   dee   dedefdZ	 	 ddee   deee      dee   dedee   f
dZ	 	 ddee   deee      dee   dedee   f
dZ	 	 	 ddee   deee      dee   dee   dedefdZdeee      defdZdeeef   dedefdZ xZS )ChatLiteLLMRouterr   routerkwargsr   Nc                6    t        |   dd|i| || _        y)zConstruct Chat LiteLLM Router.r%   N )super__init__r%   )selfr%   r&   	__class__s      r    r*   zChatLiteLLMRouter.__init__+   s    11&1r"   c                      y)NLiteLLMRouterr(   )r+   s    r    	_llm_typezChatLiteLLMRouter._llm_type0   s    r"   r   c                 D    d}||v r||   ||= |j                  di        y )Napi_baser   )
setdefault)r+   r   api_base_key_names      r    _prepare_params_for_routerz,ChatLiteLLMRouter._prepare_params_for_router4   s6    &&62C+D+L() 	*b)r"   
model_namec                     | j                   j                  }|st        d      |D ]  }|d   |k(  s|| _         y t        d| d      )a  Set the default model to use for completion calls.

        Sets `self.model` to `model_name` if it is in the litellm router's
        (`self.router`) model list. This provides the default model to use
        for completion calls if no `model` kwarg is provided.
        zmodel_list is None or empty.r5   NzModel z not found in model_list.)r%   
model_list
ValueErrormodel)r+   r5   r7   entrys       r    set_default_modelz#ChatLiteLLMRouter.set_default_model=   s_     [[++
;<< 	E\"j0'
	 6*-FGHHr"   messagesstoprun_managerstreamc                 "   ||n| j                   }|r! | j                  |f||d|}t        |      S | j                  ||      \  }}	i |	|}	| j	                  |	        | j
                  j                  dd|i|	}
 | j                  |
fi |	S )N)r=   r>   r<   r(   )	streaming_streamr   _create_message_dictsr4   r%   
completion_create_chat_resultr+   r<   r=   r>   r?   r&   should_streamstream_itermessage_dictsr   responses              r    	_generatezChatLiteLLMRouter._generateM   s     #)"4$..&$,,#@FK (44 $ : :8T Jv%F%f%''/)4;;)) 
"

 (t'';F;;r"   c              +     K   t         }| j                  ||      \  }}i ||ddi}| j                  |        | j                  j                  d	d|i|D ]h  }t        |d         dk(  r|d   d   d   }	t        |	|      }|j                  }t        |      }
|r |j                  |j                  fd|
i| |
 j y w
Nr?   Tr<   choicesr   delta)messagechunkr(   )r   rC   r4   r%   rD   lenr   r,   r   on_llm_new_tokencontentr+   r<   r=   r>   r&   default_chunk_classrI   r   rQ   rO   cg_chunks              r    rB   zChatLiteLLMRouter._streamf   s      - $ : :8T Jv5F5f5h5''/+T[[++M]MfM 		E5#$))$Q'0E3E;NOE"'//*59H,,,U]]U(UfUN		s   CCc                  K   t         }| j                  ||      \  }}i ||ddi}| j                  |        | j                  j                  d	d|i| d {   2 3 d {   }t        |d         dk(  r|d   d   d   }	t        |	|      }|j                  }t        |      }
|r' |j                  |j                  fd|
i| d {    |
 y7 }7 v7 6 y wrM   )r   rC   r4   r%   acompletionrR   r   r,   r   rS   rT   rU   s              r    _astreamzChatLiteLLMRouter._astream}   s     - $ : :8T Jv5F5f5h5''/!8!8!8 "
""
&,"
 
 	 	% 5#$))$Q'0E3E;NOE"'//*59H2k22MM)15;   N
 	
sI   AC CC C#C$C'A&C CC CC C c                 R  K   ||n| j                   }|r) | j                  d|||d|}t        |       d {   S | j                  ||      \  }}	i |	|}	| j	                  |	        | j
                  j                  dd|i|	 d {   }
 | j                  |
fi |	S 7 i7 w)N)r<   r=   r>   r<   r(   )rA   rZ   r   rC   r4   r%   rY   rE   rF   s              r    
_ageneratezChatLiteLLMRouter._agenerate   s      #)"4$..'$-- !+IOK /{;;; $ : :8T Jv%F%f%''/000 
"

 
 (t'';F;; <
s"   7B'B#AB'B%B'%B'llm_outputsc                    i }d }|D ]b  }||d   }|B|j                         j                         D ]!  \  }}||v r||   ||xx   |z  cc<   |||<   # |R|j                  d      }d || j                  d}|r||d<   |S )Nr   system_fingerprint)r   r5   )
model_dumpitemsgetr9   )	r+   r]   overall_token_usager_   outputr   kvcombineds	            r    _combine_llm_outputsz&ChatLiteLLMRouter._combine_llm_outputs   s    $&!! 	FF~ /K&'224::< 3DAq//4G4J4V+A.!3.12+A.	3
 ")%+ZZ0D%E"	F $7djjQ-?H)*r"   rJ   c           	         ddl m} g }|d   D ]G  }t        |d         }t        |t	        |j                  d                  }|j                  |       I |j                  d |dd	            }t        |fi |}	t        ||	
      S )Nr   )UsagerN   rP   finish_reason)rk   )rP   generation_infor   )prompt_tokenstotal_tokens)generationsr   )	litellm.utilsrj   r   r   dictrb   appendr!   r   )
r+   rJ   r   rj   ro   resrP   genr   r   s
             r    rE   z%ChatLiteLLMRouter._create_chat_result   s     	(I& 	$C.s9~>G  $377?3K LC s#	$ ll7EPQ,RS#K:6:
kjIIr"   )NNN)NN)__name__
__module____qualname____doc__r   __annotations__r*   propertystrr/   r4   r;   r   r   r	   r   boolr   rK   r   r   rB   r
   r   rZ   r\   rq   rh   r   rE   __classcell__)r,   s   @r    r$   r$   &   s!   ,K#   
 3  * * *IC ID I& %):>!%<{#< tCy!< 67	<
 < < 
<8 %):>	{# tCy! 67	
  
%	&4 %)?C	{# tCy! ;<	
  
*	+< %)?C!%<{#< tCy!< ;<	<
 < < 
<8Xd^0D  ,JS)J58J	Jr"   r$   N)rx   typingr   r   r   r   r   r	    langchain_core.callbacks.managerr
   r   *langchain_core.language_models.chat_modelsr   r   langchain_core.messagesr   r   langchain_core.outputsr   r   r   'langchain_community.chat_models.litellmr   r   r   r   model_extra_key_namerq   r!   r$   r(   r"   r    <module>r      sf    ( H H @ R R  % $ 	# 	 	 	sJ sJr"   