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"""Utilities to use Google provided components."""
from importlib import metadata
from typing import Any, Optional
def get_client_info(module: Optional[str] = None) -> Any:
r"""Return a custom user agent header.
Args:
module (Optional[str]):
Optional. The module for a custom user agent header.
Returns:
google.api_core.gapic_v1.client_info.ClientInfo
"""
from google.api_core.gapic_v1.client_info import ClientInfo
langchain_version = metadata.version("langchain")
client_library_version = (
f"{langchain_version}-{module}" if module else langchain_version
)
return ClientInfo(
client_library_version=client_library_version,
user_agent=f"langchain/{client_library_version}",
)
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