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from abc import ABC, abstractmethod
from typing import TYPE_CHECKING, Any, AsyncIterator, Dict, List, Optional, Tuple
import httpx
from litellm.types.llms.anthropic_messages.anthropic_response import (
AnthropicMessagesResponse,
)
from litellm.types.router import GenericLiteLLMParams
if TYPE_CHECKING:
from litellm.litellm_core_utils.litellm_logging import Logging as _LiteLLMLoggingObj
LiteLLMLoggingObj = _LiteLLMLoggingObj
else:
LiteLLMLoggingObj = Any
class BaseAnthropicMessagesConfig(ABC):
@abstractmethod
def validate_anthropic_messages_environment( # use different name because return type is different from base config's validate_environment
self,
headers: dict,
model: str,
messages: List[Any],
optional_params: dict,
litellm_params: dict,
api_key: Optional[str] = None,
api_base: Optional[str] = None,
) -> Tuple[dict, Optional[str]]:
"""
OPTIONAL
Validate the environment for the request
Returns:
- headers: dict
- api_base: Optional[str] - If the provider needs to update the api_base, return it here. Otherwise, return None.
"""
return headers, api_base
@abstractmethod
def get_complete_url(
self,
api_base: Optional[str],
api_key: Optional[str],
model: str,
optional_params: dict,
litellm_params: dict,
stream: Optional[bool] = None,
) -> str:
"""
OPTIONAL
Get the complete url for the request
Some providers need `model` in `api_base`
"""
return api_base or ""
@abstractmethod
def get_supported_anthropic_messages_params(self, model: str) -> list:
pass
@abstractmethod
def transform_anthropic_messages_request(
self,
model: str,
messages: List[Dict],
anthropic_messages_optional_request_params: Dict,
litellm_params: GenericLiteLLMParams,
headers: dict,
) -> Dict:
pass
@abstractmethod
def transform_anthropic_messages_response(
self,
model: str,
raw_response: httpx.Response,
logging_obj: LiteLLMLoggingObj,
) -> AnthropicMessagesResponse:
pass
def sign_request(
self,
headers: dict,
optional_params: dict,
request_data: dict,
api_base: str,
model: Optional[str] = None,
stream: Optional[bool] = None,
fake_stream: Optional[bool] = None,
) -> Tuple[dict, Optional[bytes]]:
"""
OPTIONAL
Sign the request, providers like Bedrock need to sign the request before sending it to the API
For all other providers, this is a no-op and we just return the headers
"""
return headers, None
def get_async_streaming_response_iterator(
self,
model: str,
httpx_response: httpx.Response,
request_body: dict,
litellm_logging_obj: LiteLLMLoggingObj,
) -> AsyncIterator:
raise NotImplementedError("Subclasses must implement this method")
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