mirror of
https://github.com/hwchase17/langchain.git
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84 lines
2.1 KiB
Python
84 lines
2.1 KiB
Python
"""Helpers for creating Anthropic API clients.
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This module allows for the caching of httpx clients to avoid creating new instances
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for each instance of ChatAnthropic.
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Logic is largely replicated from anthropic._base_client.
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"""
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from __future__ import annotations
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import asyncio
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import os
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from functools import lru_cache
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from typing import Any
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import anthropic
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_NOT_GIVEN: Any = object()
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class _SyncHttpxClientWrapper(anthropic.DefaultHttpxClient):
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"""Borrowed from anthropic._base_client."""
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def __del__(self) -> None:
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if self.is_closed:
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return
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try:
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self.close()
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except Exception: # noqa: S110
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pass
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class _AsyncHttpxClientWrapper(anthropic.DefaultAsyncHttpxClient):
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"""Borrowed from anthropic._base_client."""
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def __del__(self) -> None:
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if self.is_closed:
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return
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try:
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# TODO(someday): support non asyncio runtimes here
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asyncio.get_running_loop().create_task(self.aclose())
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except Exception: # noqa: S110
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pass
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@lru_cache
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def _get_default_httpx_client(
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*,
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base_url: str | None,
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timeout: Any = _NOT_GIVEN,
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anthropic_proxy: str | None = None,
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) -> _SyncHttpxClientWrapper:
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kwargs: dict[str, Any] = {
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"base_url": base_url
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or os.environ.get("ANTHROPIC_BASE_URL")
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or "https://api.anthropic.com",
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}
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if timeout is not _NOT_GIVEN:
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kwargs["timeout"] = timeout
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if anthropic_proxy is not None:
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kwargs["proxy"] = anthropic_proxy
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return _SyncHttpxClientWrapper(**kwargs)
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@lru_cache
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def _get_default_async_httpx_client(
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*,
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base_url: str | None,
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timeout: Any = _NOT_GIVEN,
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anthropic_proxy: str | None = None,
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) -> _AsyncHttpxClientWrapper:
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kwargs: dict[str, Any] = {
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"base_url": base_url
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or os.environ.get("ANTHROPIC_BASE_URL")
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or "https://api.anthropic.com",
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}
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if timeout is not _NOT_GIVEN:
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kwargs["timeout"] = timeout
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if anthropic_proxy is not None:
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kwargs["proxy"] = anthropic_proxy
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return _AsyncHttpxClientWrapper(**kwargs)
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