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Class: LangChatEngine

Main engine for LangChat library. Handles initialization of adapters and chat processing.

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Constructor

LangChatEngine(config: Optional[LangChatConfig] = None)
Parameters:
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config
LangChatConfig | None
default:"None"
LangChat configuration. If None, uses default config.

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Methods

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async chat()

Process a chat query. 
async def chat(
    self,
    query: str,
    user_id: str,
    domain: str = "default",
    standalone_question: Optional[str] = None
) -> dict
Parameters:
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query
str
required
User query text
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user_id
str
required
User identifier
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domain
str
default:"default"
User domain
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standalone_question
str | None
default:"None"
Optional standalone question (if already generated)
Returns: dict - Response dictionary with response, user_id, timestamp, status, response_time

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get_session()

Get or create a user session. 
def get_session(
    self,
    user_id: str,
    domain: str = "default"
) -> UserSession
Parameters:
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user_id
str
required
User identifier
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domain
str
default:"default"
User domain
Returns: UserSession - User session instance

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Properties

  • config: LangChatConfig instance
  • llm: OpenAILLMService instance
  • vector_adapter: PineconeVectorAdapter instance
  • reranker_adapter: FlashrankRerankAdapter instance
  • supabase_adapter: SupabaseAdapter instance
  • id_manager: IDManager instance
  • sessions: Dict[str, UserSession] - Active sessions