Source code for langchain_community.retrievers.arcee

from typing import Any, Dict, List, Optional

from langchain_core.callbacks import CallbackManagerForRetrieverRun
from langchain_core.documents import Document
from langchain_core.pydantic_v1 import Extra, SecretStr, root_validator
from langchain_core.retrievers import BaseRetriever
from langchain_core.utils import convert_to_secret_str, get_from_dict_or_env

from langchain_community.utilities.arcee import ArceeWrapper, DALMFilter

[docs]class ArceeRetriever(BaseRetriever): """Arcee Domain Adapted Language Models (DALMs) retriever. To use, set the ``ARCEE_API_KEY`` environment variable with your Arcee API key, or pass ``arcee_api_key`` as a named parameter. Example: .. code-block:: python from langchain_community.retrievers import ArceeRetriever retriever = ArceeRetriever( model="DALM-PubMed", arcee_api_key="ARCEE-API-KEY" ) documents = retriever.invoke("AI-driven music therapy") """ _client: Optional[ArceeWrapper] = None #: :meta private: """Arcee client.""" arcee_api_key: SecretStr """Arcee API Key""" model: str """Arcee DALM name""" arcee_api_url: str = "" """Arcee API URL""" arcee_api_version: str = "v2" """Arcee API Version""" arcee_app_url: str = "" """Arcee App URL""" model_kwargs: Optional[Dict[str, Any]] = None """Keyword arguments to pass to the model.""" class Config: """Configuration for this pydantic object.""" extra = Extra.forbid underscore_attrs_are_private = True def __init__(self, **data: Any) -> None: """Initializes private fields.""" super().__init__(**data) self._client = ArceeWrapper( arcee_api_key=self.arcee_api_key.get_secret_value(), arcee_api_url=self.arcee_api_url, arcee_api_version=self.arcee_api_version, model_kwargs=self.model_kwargs, model_name=self.model, ) self._client.validate_model_training_status() @root_validator() def validate_environments(cls, values: Dict) -> Dict: """Validate Arcee environment variables.""" # validate env vars values["arcee_api_key"] = convert_to_secret_str( get_from_dict_or_env( values, "arcee_api_key", "ARCEE_API_KEY", ) ) values["arcee_api_url"] = get_from_dict_or_env( values, "arcee_api_url", "ARCEE_API_URL", ) values["arcee_app_url"] = get_from_dict_or_env( values, "arcee_app_url", "ARCEE_APP_URL", ) values["arcee_api_version"] = get_from_dict_or_env( values, "arcee_api_version", "ARCEE_API_VERSION", ) # validate model kwargs if values["model_kwargs"]: kw = values["model_kwargs"] # validate size if kw.get("size") is not None: if not kw.get("size") >= 0: raise ValueError("`size` must not be negative.") # validate filters if kw.get("filters") is not None: if not isinstance(kw.get("filters"), List): raise ValueError("`filters` must be a list.") for f in kw.get("filters"): DALMFilter(**f) return values def _get_relevant_documents( self, query: str, run_manager: CallbackManagerForRetrieverRun, **kwargs: Any ) -> List[Document]: """Retrieve {size} contexts with your retriever for a given query Args: query: Query to submit to the model size: The max number of context results to retrieve. Defaults to 3. (Can be less if filters are provided). filters: Filters to apply to the context dataset. """ try: if not self._client: raise ValueError("Client is not initialized.") return self._client.retrieve(query=query, **kwargs) except Exception as e: raise ValueError(f"Error while retrieving documents: {e}") from e