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core[patch]: mark usage callback handler as beta (#30486)

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ccurme 2025-03-25 19:25:57 -04:00 committed by GitHub
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libs/core/langchain_core/callbacks/usage.py
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@ -6,12 +6,14 @@ from contextlib import contextmanager
from contextvars import ContextVar
from typing import Any, Optional
from langchain_core._api import beta
from langchain_core.callbacks import BaseCallbackHandler
from langchain_core.messages import AIMessage
from langchain_core.messages.ai import UsageMetadata, add_usage
from langchain_core.outputs import ChatGeneration, LLMResult
@beta()
class UsageMetadataCallbackHandler(BaseCallbackHandler):
"""Callback Handler that tracks AIMessage.usage_metadata.
@ -67,6 +69,7 @@ class UsageMetadataCallbackHandler(BaseCallbackHandler):
@contextmanager
@beta()
def get_usage_metadata_callback(
name: str = "usage_metadata_callback",
) -> Generator[UsageMetadataCallbackHandler, None, None]: