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fix(langchain): set cost to zero on errors #1328

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Merged
hassiebp merged 1 commit into from
Sep 8, 2025
Merged

fix(langchain): set cost to zero on errors #1328

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4 changes: 4 additions & 0 deletions langfuse/langchain/CallbackHandler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -218,6 +218,7 @@ def on_retriever_error(
level="ERROR",
status_message=str(error),
input=kwargs.get("inputs"),
cost_details={"total": 0},
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@ellipsis-dev ellipsis-dev bot Sep 8, 2025

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Good: cost_details set to {"total": 0} on retriever errors. Consider extracting the literal to a constant if used in multiple error handlers.

).end()

except Exception as e:
Expand Down Expand Up @@ -527,6 +528,7 @@ def on_chain_error(
),
status_message=str(error) if level else None,
input=kwargs.get("inputs"),
cost_details={"total": 0},
).end()

except Exception as e:
Expand Down Expand Up @@ -733,6 +735,7 @@ def on_tool_error(
status_message=str(error),
level="ERROR",
input=kwargs.get("inputs"),
cost_details={"total": 0},
).end()

except Exception as e:
Expand Down Expand Up @@ -913,6 +916,7 @@ def on_llm_error(
status_message=str(error),
level="ERROR",
input=kwargs.get("inputs"),
cost_details={"total": 0},
).end()

except Exception as e:
Expand Down
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