From d9d0204214cb41ac7284e622144a94478b556e1f Mon Sep 17 00:00:00 2001 From: Ishaan Jaffer Date: Tue, 25 Nov 2025 11:25:55 -0800 Subject: [PATCH] AmazonBedrockOpenAIConfig --- .../amazon_openai_transformation.py | 186 ++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100644 litellm/llms/bedrock/chat/invoke_transformations/amazon_openai_transformation.py diff --git a/litellm/llms/bedrock/chat/invoke_transformations/amazon_openai_transformation.py b/litellm/llms/bedrock/chat/invoke_transformations/amazon_openai_transformation.py new file mode 100644 index 00000000000..ee07b71ef15 --- /dev/null +++ b/litellm/llms/bedrock/chat/invoke_transformations/amazon_openai_transformation.py @@ -0,0 +1,186 @@ +""" +Transformation for Bedrock imported models that use OpenAI Chat Completions format. + +Use this for models imported into Bedrock that accept the OpenAI API format. +Model format: bedrock/openai/ + +Example: bedrock/openai/arn:aws:bedrock:us-east-1:123456789012:imported-model/abc123 +""" + +from typing import TYPE_CHECKING, Any, List, Optional, Tuple, Union + +import httpx + +from litellm.llms.bedrock.base_aws_llm import BaseAWSLLM +from litellm.llms.bedrock.common_utils import BedrockError +from litellm.llms.openai.chat.gpt_transformation import OpenAIGPTConfig +from litellm.types.llms.openai import AllMessageValues + +if TYPE_CHECKING: + from litellm.litellm_core_utils.litellm_logging import Logging as _LiteLLMLoggingObj + + LiteLLMLoggingObj = _LiteLLMLoggingObj +else: + LiteLLMLoggingObj = Any + + +class AmazonBedrockOpenAIConfig(OpenAIGPTConfig, BaseAWSLLM): + """ + Configuration for Bedrock imported models that use OpenAI Chat Completions format. + + This class handles the transformation of requests and responses for Bedrock + imported models that accept the OpenAI API format directly. + + Inherits from OpenAIGPTConfig to leverage standard OpenAI parameter handling + and response transformation, while adding Bedrock-specific URL generation + and AWS request signing. + + Usage: + model = "bedrock/openai/arn:aws:bedrock:us-east-1:123456789012:imported-model/abc123" + """ + + def __init__(self, **kwargs): + OpenAIGPTConfig.__init__(self, **kwargs) + BaseAWSLLM.__init__(self, **kwargs) + + @property + def custom_llm_provider(self) -> Optional[str]: + return "bedrock" + + def _get_openai_model_id(self, model: str) -> str: + """ + Extract the actual model ID from the LiteLLM model name. + + Input format: bedrock/openai/ + Returns: + """ + # Remove bedrock/ prefix if present + if model.startswith("bedrock/"): + model = model[8:] + + # Remove openai/ prefix + if model.startswith("openai/"): + model = model[7:] + + return model + + 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: + """ + Get the complete URL for the Bedrock invoke endpoint. + + Uses the standard Bedrock invoke endpoint format. + """ + model_id = self._get_openai_model_id(model) + + # Get AWS region + aws_region_name = self._get_aws_region_name( + optional_params=optional_params, model=model + ) + + # Get runtime endpoint + aws_bedrock_runtime_endpoint = optional_params.get( + "aws_bedrock_runtime_endpoint", None + ) + endpoint_url, proxy_endpoint_url = self.get_runtime_endpoint( + api_base=api_base, + aws_bedrock_runtime_endpoint=aws_bedrock_runtime_endpoint, + aws_region_name=aws_region_name, + ) + + # Build the invoke URL + if stream: + endpoint_url = f"{endpoint_url}/model/{model_id}/invoke-with-response-stream" + else: + endpoint_url = f"{endpoint_url}/model/{model_id}/invoke" + + return endpoint_url + + def sign_request( + self, + headers: dict, + optional_params: dict, + request_data: dict, + api_base: str, + api_key: Optional[str] = None, + model: Optional[str] = None, + stream: Optional[bool] = None, + fake_stream: Optional[bool] = None, + ) -> Tuple[dict, Optional[bytes]]: + """ + Sign the request using AWS Signature Version 4. + """ + return self._sign_request( + service_name="bedrock", + headers=headers, + optional_params=optional_params, + request_data=request_data, + api_base=api_base, + api_key=api_key, + model=model, + stream=stream, + fake_stream=fake_stream, + ) + + def transform_request( + self, + model: str, + messages: List[AllMessageValues], + optional_params: dict, + litellm_params: dict, + headers: dict, + ) -> dict: + """ + Transform the request to OpenAI Chat Completions format for Bedrock imported models. + + Removes AWS-specific params and stream param (handled separately in URL), + then delegates to parent class for standard OpenAI request transformation. + """ + # Remove stream from optional_params as it's handled separately in URL + optional_params.pop("stream", None) + + # Remove AWS-specific params that shouldn't be in the request body + inference_params = { + k: v + for k, v in optional_params.items() + if k not in self.aws_authentication_params + } + + # Use parent class transform_request for OpenAI format + return super().transform_request( + model=self._get_openai_model_id(model), + messages=messages, + optional_params=inference_params, + litellm_params=litellm_params, + headers=headers, + ) + + def validate_environment( + self, + headers: dict, + model: str, + messages: List[AllMessageValues], + optional_params: dict, + litellm_params: dict, + api_key: Optional[str] = None, + api_base: Optional[str] = None, + ) -> dict: + """ + Validate the environment and return headers. + + For Bedrock, we don't need Bearer token auth since we use AWS SigV4. + """ + return headers + + def get_error_class( + self, error_message: str, status_code: int, headers: Union[dict, httpx.Headers] + ) -> BedrockError: + """Return the appropriate error class for Bedrock.""" + return BedrockError(status_code=status_code, message=error_message)