langchain_community.callbacks.context_callback
.ContextCallbackHandler¶
- class langchain_community.callbacks.context_callback.ContextCallbackHandler(token: str = '', verbose: bool = False, **kwargs: Any)[source]¶
Callback Handler that records transcripts to the Context service.
- Keyword Arguments
token (optional) – The token with which to authenticate requests to Context. Visit https://with.context.ai/settings to generate a token. If not provided, the value of the CONTEXT_TOKEN environment variable will be used.
- Raises
ImportError – if the context-python package is not installed.
- Chat Example:
>>> from langchain_community.llms import ChatOpenAI >>> from langchain_community.callbacks import ContextCallbackHandler >>> context_callback = ContextCallbackHandler( ... token="<CONTEXT_TOKEN_HERE>", ... ) >>> chat = ChatOpenAI( ... temperature=0, ... headers={"user_id": "123"}, ... callbacks=[context_callback], ... openai_api_key="API_KEY_HERE", ... ) >>> messages = [ ... SystemMessage(content="You translate English to French."), ... HumanMessage(content="I love programming with LangChain."), ... ] >>> chat(messages)
- Chain Example:
>>> from langchain.chains import LLMChain >>> from langchain_community.chat_models import ChatOpenAI >>> from langchain_community.callbacks import ContextCallbackHandler >>> context_callback = ContextCallbackHandler( ... token="<CONTEXT_TOKEN_HERE>", ... ) >>> human_message_prompt = HumanMessagePromptTemplate( ... prompt=PromptTemplate( ... template="What is a good name for a company that makes {product}?", ... input_variables=["product"], ... ), ... ) >>> chat_prompt_template = ChatPromptTemplate.from_messages( ... [human_message_prompt] ... ) >>> callback = ContextCallbackHandler(token) >>> # Note: the same callback object must be shared between the ... LLM and the chain. >>> chat = ChatOpenAI(temperature=0.9, callbacks=[callback]) >>> chain = LLMChain( ... llm=chat, ... prompt=chat_prompt_template, ... callbacks=[callback] ... ) >>> chain.run("colorful socks")
Attributes
ignore_agent
Whether to ignore agent callbacks.
ignore_chain
Whether to ignore chain callbacks.
ignore_chat_model
Whether to ignore chat model callbacks.
ignore_llm
Whether to ignore LLM callbacks.
ignore_retriever
Whether to ignore retriever callbacks.
ignore_retry
Whether to ignore retry callbacks.
raise_error
run_inline
Methods
__init__
([token, verbose])on_agent_action
(action, *, run_id[, ...])Run on agent action.
on_agent_finish
(finish, *, run_id[, ...])Run on agent end.
on_chain_end
(outputs, **kwargs)Run when chain ends.
on_chain_error
(error, *, run_id[, parent_run_id])Run when chain errors.
on_chain_start
(serialized, inputs, **kwargs)Run when chain starts.
on_chat_model_start
(serialized, messages, *, ...)Run when the chat model is started.
on_llm_end
(response, **kwargs)Run when LLM ends.
on_llm_error
(error, *, run_id[, parent_run_id])Run when LLM errors. :param error: The error that occurred. :type error: BaseException :param kwargs: Additional keyword arguments. - response (LLMResult): The response which was generated before the error occurred. :type kwargs: Any.
on_llm_new_token
(token, *[, chunk, ...])Run on new LLM token.
on_llm_start
(serialized, prompts, *, run_id)Run when LLM starts running.
on_retriever_end
(documents, *, run_id[, ...])Run when Retriever ends running.
on_retriever_error
(error, *, run_id[, ...])Run when Retriever errors.
on_retriever_start
(serialized, query, *, run_id)Run when Retriever starts running.
on_retry
(retry_state, *, run_id[, parent_run_id])Run on a retry event.
on_text
(text, *, run_id[, parent_run_id])Run on arbitrary text.
on_tool_end
(output, *, run_id[, parent_run_id])Run when tool ends running.
on_tool_error
(error, *, run_id[, parent_run_id])Run when tool errors.
on_tool_start
(serialized, input_str, *, run_id)Run when tool starts running.
- on_agent_action(action: AgentAction, *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run on agent action.
- on_agent_finish(finish: AgentFinish, *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run on agent end.
- on_chain_error(error: BaseException, *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run when chain errors.
- on_chain_start(serialized: Dict[str, Any], inputs: Dict[str, Any], **kwargs: Any) None [source]¶
Run when chain starts.
- on_chat_model_start(serialized: Dict[str, Any], messages: List[List[BaseMessage]], *, run_id: UUID, **kwargs: Any) Any [source]¶
Run when the chat model is started.
- on_llm_error(error: BaseException, *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run when LLM errors. :param error: The error that occurred. :type error: BaseException :param kwargs: Additional keyword arguments.
- response (LLMResult): The response which was generated before
the error occurred.
- on_llm_new_token(token: str, *, chunk: Optional[Union[GenerationChunk, ChatGenerationChunk]] = None, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run on new LLM token. Only available when streaming is enabled.
- Parameters
token (str) – The new token.
chunk (GenerationChunk | ChatGenerationChunk) – The new generated chunk,
information. (containing content and other) –
- on_llm_start(serialized: Dict[str, Any], prompts: List[str], *, run_id: UUID, parent_run_id: Optional[UUID] = None, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, **kwargs: Any) Any ¶
Run when LLM starts running.
- on_retriever_end(documents: Sequence[Document], *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run when Retriever ends running.
- on_retriever_error(error: BaseException, *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run when Retriever errors.
- on_retriever_start(serialized: Dict[str, Any], query: str, *, run_id: UUID, parent_run_id: Optional[UUID] = None, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, **kwargs: Any) Any ¶
Run when Retriever starts running.
- on_retry(retry_state: RetryCallState, *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run on a retry event.
- on_text(text: str, *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run on arbitrary text.
- on_tool_end(output: str, *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run when tool ends running.
- on_tool_error(error: BaseException, *, run_id: UUID, parent_run_id: Optional[UUID] = None, **kwargs: Any) Any ¶
Run when tool errors.
- on_tool_start(serialized: Dict[str, Any], input_str: str, *, run_id: UUID, parent_run_id: Optional[UUID] = None, tags: Optional[List[str]] = None, metadata: Optional[Dict[str, Any]] = None, inputs: Optional[Dict[str, Any]] = None, **kwargs: Any) Any ¶
Run when tool starts running.