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langchain/langchain/utilities/vertexai.py

47 lines
1.3 KiB
Python

"""Utilities to init Vertex AI."""
from typing import TYPE_CHECKING, Optional
if TYPE_CHECKING:
from google.auth.credentials import Credentials
def raise_vertex_import_error() -> None:
"""Raise ImportError related to Vertex SDK being not available.
Raises:
ImportError: an ImportError that mentions a required version of the SDK.
"""
sdk = "'google-cloud-aiplatform>=1.26.0'"
raise ImportError(
"Could not import VertexAI. Please, install it with " f"pip install {sdk}"
)
def init_vertexai(
project: Optional[str] = None,
location: Optional[str] = None,
credentials: Optional["Credentials"] = None,
) -> None:
"""Init vertexai.
Args:
project: The default GCP project to use when making Vertex API calls.
location: The default location to use when making API calls.
credentials: The default custom
credentials to use when making API calls. If not provided credentials
will be ascertained from the environment.
Raises:
ImportError: If importing vertexai SDK did not succeed.
"""
try:
import vertexai
except ImportError:
raise_vertex_import_error()
vertexai.init(
project=project,
location=location,
credentials=credentials,
)