refactor location of proxy

litellm_proxy/pass_through_endpoints/passthrough_endpoint_router.py

@@ -0,0 +1,193 @@
+from typing import Dict, Optional
+
+from litellm._logging import verbose_router_logger
+from litellm.secret_managers.main import get_secret_str
+from litellm.types.llms.vertex_ai import VERTEX_CREDENTIALS_TYPES
+from litellm.types.passthrough_endpoints.vertex_ai import VertexPassThroughCredentials
+
+
+class PassthroughEndpointRouter:
+    """
+    Use this class to Set/Get credentials for pass-through endpoints
+    """
+
+    def __init__(self):
+        self.credentials: Dict[str, str] = {}
+        self.deployment_key_to_vertex_credentials: Dict[
+            str, VertexPassThroughCredentials
+        ] = {}
+        self.default_vertex_config: Optional[VertexPassThroughCredentials] = None
+
+    def set_pass_through_credentials(
+        self,
+        custom_llm_provider: str,
+        api_base: Optional[str],
+        api_key: Optional[str],
+    ):
+        """
+        Set credentials for a pass-through endpoint. Used when a user adds a pass-through LLM endpoint on the UI.
+
+        Args:
+            custom_llm_provider: The provider of the pass-through endpoint
+            api_base: The base URL of the pass-through endpoint
+            api_key: The API key for the pass-through endpoint
+        """
+        credential_name = self._get_credential_name_for_provider(
+            custom_llm_provider=custom_llm_provider,
+            region_name=self._get_region_name_from_api_base(
+                api_base=api_base, custom_llm_provider=custom_llm_provider
+            ),
+        )
+        if api_key is None:
+            raise ValueError("api_key is required for setting pass-through credentials")
+        self.credentials[credential_name] = api_key
+
+    def get_credentials(
+        self,
+        custom_llm_provider: str,
+        region_name: Optional[str],
+    ) -> Optional[str]:
+        credential_name = self._get_credential_name_for_provider(
+            custom_llm_provider=custom_llm_provider,
+            region_name=region_name,
+        )
+        verbose_router_logger.debug(
+            f"Pass-through llm endpoints router, looking for credentials for {credential_name}"
+        )
+        if credential_name in self.credentials:
+            verbose_router_logger.debug(f"Found credentials for {credential_name}")
+            return self.credentials[credential_name]
+        else:
+            verbose_router_logger.debug(
+                f"No credentials found for {credential_name}, looking for env variable"
+            )
+            _env_variable_name = (
+                self._get_default_env_variable_name_passthrough_endpoint(
+                    custom_llm_provider=custom_llm_provider,
+                )
+            )
+            return get_secret_str(_env_variable_name)
+
+    def _get_vertex_env_vars(self) -> VertexPassThroughCredentials:
+        """
+        Helper to get vertex pass through config from environment variables
+
+        The following environment variables are used:
+        - DEFAULT_VERTEXAI_PROJECT (project id)
+        - DEFAULT_VERTEXAI_LOCATION (location)
+        - DEFAULT_GOOGLE_APPLICATION_CREDENTIALS (path to credentials file)
+        """
+        return VertexPassThroughCredentials(
+            vertex_project=get_secret_str("DEFAULT_VERTEXAI_PROJECT"),
+            vertex_location=get_secret_str("DEFAULT_VERTEXAI_LOCATION"),
+            vertex_credentials=get_secret_str("DEFAULT_GOOGLE_APPLICATION_CREDENTIALS"),
+        )
+
+    def set_default_vertex_config(self, config: Optional[dict] = None):
+        """Sets vertex configuration from provided config and/or environment variables
+
+        Args:
+            config (Optional[dict]): Configuration dictionary
+            Example: {
+                "vertex_project": "my-project-123",
+                "vertex_location": "us-central1",
+                "vertex_credentials": "os.environ/GOOGLE_CREDS"
+            }
+        """
+        # Initialize config dictionary if None
+        if config is None:
+            self.default_vertex_config = self._get_vertex_env_vars()
+            return
+
+        if isinstance(config, dict):
+            for key, value in config.items():
+                if isinstance(value, str) and value.startswith("os.environ/"):
+                    config[key] = get_secret_str(value)
+
+        self.default_vertex_config = VertexPassThroughCredentials(**config)
+
+    def add_vertex_credentials(
+        self,
+        project_id: str,
+        location: str,
+        vertex_credentials: VERTEX_CREDENTIALS_TYPES,
+    ):
+        """
+        Add the vertex credentials for the given project-id, location
+        """
+
+        deployment_key = self._get_deployment_key(
+            project_id=project_id,
+            location=location,
+        )
+        if deployment_key is None:
+            verbose_router_logger.debug(
+                "No deployment key found for project-id, location"
+            )
+            return
+        vertex_pass_through_credentials = VertexPassThroughCredentials(
+            vertex_project=project_id,
+            vertex_location=location,
+            vertex_credentials=vertex_credentials,
+        )
+        self.deployment_key_to_vertex_credentials[
+            deployment_key
+        ] = vertex_pass_through_credentials
+
+    def _get_deployment_key(
+        self, project_id: Optional[str], location: Optional[str]
+    ) -> Optional[str]:
+        """
+        Get the deployment key for the given project-id, location
+        """
+        if project_id is None or location is None:
+            return None
+        return f"{project_id}-{location}"
+
+    def get_vertex_credentials(
+        self, project_id: Optional[str], location: Optional[str]
+    ) -> Optional[VertexPassThroughCredentials]:
+        """
+        Get the vertex credentials for the given project-id, location
+        """
+        deployment_key = self._get_deployment_key(
+            project_id=project_id,
+            location=location,
+        )
+
+        if deployment_key is None:
+            return self.default_vertex_config
+        if deployment_key in self.deployment_key_to_vertex_credentials:
+            return self.deployment_key_to_vertex_credentials[deployment_key]
+        else:
+            return self.default_vertex_config
+
+    def _get_credential_name_for_provider(
+        self,
+        custom_llm_provider: str,
+        region_name: Optional[str],
+    ) -> str:
+        if region_name is None:
+            return f"{custom_llm_provider.upper()}_API_KEY"
+        return f"{custom_llm_provider.upper()}_{region_name.upper()}_API_KEY"
+
+    def _get_region_name_from_api_base(
+        self,
+        custom_llm_provider: str,
+        api_base: Optional[str],
+    ) -> Optional[str]:
+        """
+        Get the region name from the API base.
+
+        Each provider might have a different way of specifying the region in the API base - this is where you can use conditional logic to handle that.
+        """
+        if custom_llm_provider == "assemblyai":
+            if api_base and "eu" in api_base:
+                return "eu"
+        return None
+
+    @staticmethod
+    def _get_default_env_variable_name_passthrough_endpoint(
+        custom_llm_provider: str,
+    ) -> str:
+        return f"{custom_llm_provider.upper()}_API_KEY"