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import json
import re
from typing import Dict, Optional
from litellm._logging import verbose_proxy_logger
from litellm.proxy.vertex_ai_endpoints.vertex_endpoints import (
VertexPassThroughCredentials,
)
class VertexPassThroughRouter:
"""
Vertex Pass Through Router for Vertex AI pass-through endpoints
- if request specifies a project-id, location -> use credentials corresponding to the project-id, location
- if request does not specify a project-id, location -> use credentials corresponding to the DEFAULT_VERTEXAI_PROJECT, DEFAULT_VERTEXAI_LOCATION
"""
def __init__(self):
"""
Initialize the VertexPassThroughRouter
Stores the vertex credentials for each deployment key
```
{
"project_id-location": VertexPassThroughCredentials,
"adroit-crow-us-central1": VertexPassThroughCredentials,
}
```
"""
self.deployment_key_to_vertex_credentials: Dict[
str, VertexPassThroughCredentials
] = {}
pass
def get_vertex_credentials(
self, project_id: Optional[str], location: Optional[str]
) -> VertexPassThroughCredentials:
"""
Get the vertex credentials for the given project-id, location
"""
from litellm.proxy.vertex_ai_endpoints.vertex_endpoints import (
default_vertex_config,
)
deployment_key = self._get_deployment_key(
project_id=project_id,
location=location,
)
if deployment_key is None:
return default_vertex_config
if deployment_key in self.deployment_key_to_vertex_credentials:
return self.deployment_key_to_vertex_credentials[deployment_key]
else:
return default_vertex_config
def add_vertex_credentials(
self,
project_id: str,
location: str,
vertex_credentials: str,
):
"""
Add the vertex credentials for the given project-id, location
"""
from litellm.proxy.vertex_ai_endpoints.vertex_endpoints import (
_set_default_vertex_config,
)
deployment_key = self._get_deployment_key(
project_id=project_id,
location=location,
)
if deployment_key is None:
verbose_proxy_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
)
verbose_proxy_logger.debug(
f"self.deployment_key_to_vertex_credentials: {json.dumps(self.deployment_key_to_vertex_credentials, indent=4, default=str)}"
)
_set_default_vertex_config(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}"
@staticmethod
def _get_vertex_project_id_from_url(url: str) -> Optional[str]:
"""
Get the vertex project id from the url
`https://${LOCATION}-aiplatform.googleapis.com/v1/projects/${PROJECT_ID}/locations/${LOCATION}/publishers/google/models/${MODEL_ID}:streamGenerateContent`
"""
match = re.search(r"/projects/([^/]+)", url)
return match.group(1) if match else None
@staticmethod
def _get_vertex_location_from_url(url: str) -> Optional[str]:
"""
Get the vertex location from the url
`https://${LOCATION}-aiplatform.googleapis.com/v1/projects/${PROJECT_ID}/locations/${LOCATION}/publishers/google/models/${MODEL_ID}:streamGenerateContent`
"""
match = re.search(r"/locations/([^/]+)", url)
return match.group(1) if match else None
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