two version of R2R are here HEAD master

2 files changed, 226 insertions, 0 deletions

diff --git a/.venv/lib/python3.12/site-packages/litellm/llms/anthropic/experimental_pass_through/messages/handler.py b/.venv/lib/python3.12/site-packages/litellm/llms/anthropic/experimental_pass_through/messages/handler.py
new file mode 100644
index 00000000..a7dfff74
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/litellm/llms/anthropic/experimental_pass_through/messages/handler.py
@@ -0,0 +1,179 @@
+"""
+- call /messages on Anthropic API
+- Make streaming + non-streaming request - just pass it through direct to Anthropic. No need to do anything special here 
+- Ensure requests are logged in the DB - stream + non-stream
+
+"""
+
+import json
+from typing import Any, AsyncIterator, Dict, Optional, Union, cast
+
+import httpx
+
+import litellm
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.llms.base_llm.anthropic_messages.transformation import (
+    BaseAnthropicMessagesConfig,
+)
+from litellm.llms.custom_httpx.http_handler import (
+    AsyncHTTPHandler,
+    get_async_httpx_client,
+)
+from litellm.types.router import GenericLiteLLMParams
+from litellm.types.utils import ProviderSpecificHeader
+from litellm.utils import ProviderConfigManager, client
+
+
+class AnthropicMessagesHandler:
+
+    @staticmethod
+    async def _handle_anthropic_streaming(
+        response: httpx.Response,
+        request_body: dict,
+        litellm_logging_obj: LiteLLMLoggingObj,
+    ) -> AsyncIterator:
+        """Helper function to handle Anthropic streaming responses using the existing logging handlers"""
+        from datetime import datetime
+
+        from litellm.proxy.pass_through_endpoints.streaming_handler import (
+            PassThroughStreamingHandler,
+        )
+        from litellm.proxy.pass_through_endpoints.success_handler import (
+            PassThroughEndpointLogging,
+        )
+        from litellm.proxy.pass_through_endpoints.types import EndpointType
+
+        # Create success handler object
+        passthrough_success_handler_obj = PassThroughEndpointLogging()
+
+        # Use the existing streaming handler for Anthropic
+        start_time = datetime.now()
+        return PassThroughStreamingHandler.chunk_processor(
+            response=response,
+            request_body=request_body,
+            litellm_logging_obj=litellm_logging_obj,
+            endpoint_type=EndpointType.ANTHROPIC,
+            start_time=start_time,
+            passthrough_success_handler_obj=passthrough_success_handler_obj,
+            url_route="/v1/messages",
+        )
+
+
+@client
+async def anthropic_messages(
+    api_key: str,
+    model: str,
+    stream: bool = False,
+    api_base: Optional[str] = None,
+    client: Optional[AsyncHTTPHandler] = None,
+    custom_llm_provider: Optional[str] = None,
+    **kwargs,
+) -> Union[Dict[str, Any], AsyncIterator]:
+    """
+    Makes Anthropic `/v1/messages` API calls In the Anthropic API Spec
+    """
+    # Use provided client or create a new one
+    optional_params = GenericLiteLLMParams(**kwargs)
+    model, _custom_llm_provider, dynamic_api_key, dynamic_api_base = (
+        litellm.get_llm_provider(
+            model=model,
+            custom_llm_provider=custom_llm_provider,
+            api_base=optional_params.api_base,
+            api_key=optional_params.api_key,
+        )
+    )
+    anthropic_messages_provider_config: Optional[BaseAnthropicMessagesConfig] = (
+        ProviderConfigManager.get_provider_anthropic_messages_config(
+            model=model,
+            provider=litellm.LlmProviders(_custom_llm_provider),
+        )
+    )
+    if anthropic_messages_provider_config is None:
+        raise ValueError(
+            f"Anthropic messages provider config not found for model: {model}"
+        )
+    if client is None or not isinstance(client, AsyncHTTPHandler):
+        async_httpx_client = get_async_httpx_client(
+            llm_provider=litellm.LlmProviders.ANTHROPIC
+        )
+    else:
+        async_httpx_client = client
+
+    litellm_logging_obj: LiteLLMLoggingObj = kwargs.get("litellm_logging_obj", None)
+
+    # Prepare headers
+    provider_specific_header = cast(
+        Optional[ProviderSpecificHeader], kwargs.get("provider_specific_header", None)
+    )
+    extra_headers = (
+        provider_specific_header.get("extra_headers", {})
+        if provider_specific_header
+        else {}
+    )
+    headers = anthropic_messages_provider_config.validate_environment(
+        headers=extra_headers or {},
+        model=model,
+        api_key=api_key,
+    )
+
+    litellm_logging_obj.update_environment_variables(
+        model=model,
+        optional_params=dict(optional_params),
+        litellm_params={
+            "metadata": kwargs.get("metadata", {}),
+            "preset_cache_key": None,
+            "stream_response": {},
+            **optional_params.model_dump(exclude_unset=True),
+        },
+        custom_llm_provider=_custom_llm_provider,
+    )
+    litellm_logging_obj.model_call_details.update(kwargs)
+
+    # Prepare request body
+    request_body = kwargs.copy()
+    request_body = {
+        k: v
+        for k, v in request_body.items()
+        if k
+        in anthropic_messages_provider_config.get_supported_anthropic_messages_params(
+            model=model
+        )
+    }
+    request_body["stream"] = stream
+    request_body["model"] = model
+    litellm_logging_obj.stream = stream
+
+    # Make the request
+    request_url = anthropic_messages_provider_config.get_complete_url(
+        api_base=api_base, model=model
+    )
+
+    litellm_logging_obj.pre_call(
+        input=[{"role": "user", "content": json.dumps(request_body)}],
+        api_key="",
+        additional_args={
+            "complete_input_dict": request_body,
+            "api_base": str(request_url),
+            "headers": headers,
+        },
+    )
+
+    response = await async_httpx_client.post(
+        url=request_url,
+        headers=headers,
+        data=json.dumps(request_body),
+        stream=stream,
+    )
+    response.raise_for_status()
+
+    # used for logging + cost tracking
+    litellm_logging_obj.model_call_details["httpx_response"] = response
+
+    if stream:
+        return await AnthropicMessagesHandler._handle_anthropic_streaming(
+            response=response,
+            request_body=request_body,
+            litellm_logging_obj=litellm_logging_obj,
+        )
+    else:
+        return response.json()
diff --git a/.venv/lib/python3.12/site-packages/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py b/.venv/lib/python3.12/site-packages/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py
new file mode 100644
index 00000000..e9b598f1
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/litellm/llms/anthropic/experimental_pass_through/messages/transformation.py
@@ -0,0 +1,47 @@
+from typing import Optional
+
+from litellm.llms.base_llm.anthropic_messages.transformation import (
+    BaseAnthropicMessagesConfig,
+)
+
+DEFAULT_ANTHROPIC_API_BASE = "https://api.anthropic.com"
+DEFAULT_ANTHROPIC_API_VERSION = "2023-06-01"
+
+
+class AnthropicMessagesConfig(BaseAnthropicMessagesConfig):
+    def get_supported_anthropic_messages_params(self, model: str) -> list:
+        return [
+            "messages",
+            "model",
+            "system",
+            "max_tokens",
+            "stop_sequences",
+            "temperature",
+            "top_p",
+            "top_k",
+            "tools",
+            "tool_choice",
+            "thinking",
+            # TODO: Add Anthropic `metadata` support
+            # "metadata",
+        ]
+
+    def get_complete_url(self, api_base: Optional[str], model: str) -> str:
+        api_base = api_base or DEFAULT_ANTHROPIC_API_BASE
+        if not api_base.endswith("/v1/messages"):
+            api_base = f"{api_base}/v1/messages"
+        return api_base
+
+    def validate_environment(
+        self,
+        headers: dict,
+        model: str,
+        api_key: Optional[str] = None,
+    ) -> dict:
+        if "x-api-key" not in headers:
+            headers["x-api-key"] = api_key
+        if "anthropic-version" not in headers:
+            headers["anthropic-version"] = DEFAULT_ANTHROPIC_API_VERSION
+        if "content-type" not in headers:
+            headers["content-type"] = "application/json"
+        return headers