on_chain_error() — langchain Function Reference

Architecture documentation for the on_chain_error() function in base.py from the langchain codebase.

Function python Observability TelemetryUtilities calls 1 called by 1

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Observability→ TelemetryUtilities→ on_chain_error() — langchain Function Reference

Dependency Diagram

graph TD
  3f967c02_33c7_a0f4_b33a_51b2db4c8235["on_chain_error()"]
  59331c5d_55fc_8bfa_35c9_66bba01f8813["ChainManagerMixin"]
  3f967c02_33c7_a0f4_b33a_51b2db4c8235 -->|defined in| 59331c5d_55fc_8bfa_35c9_66bba01f8813
  d41b503f_7a64_7519_d09f_8a08437e5fa5["on_chain_error()"]
  d41b503f_7a64_7519_d09f_8a08437e5fa5 -->|calls| 3f967c02_33c7_a0f4_b33a_51b2db4c8235
  d41b503f_7a64_7519_d09f_8a08437e5fa5["on_chain_error()"]
  3f967c02_33c7_a0f4_b33a_51b2db4c8235 -->|calls| d41b503f_7a64_7519_d09f_8a08437e5fa5
  style 3f967c02_33c7_a0f4_b33a_51b2db4c8235 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/callbacks/base.py lines 148–163

    def on_chain_error(
        self,
        error: BaseException,
        *,
        run_id: UUID,
        parent_run_id: UUID | None = None,
        **kwargs: Any,
    ) -> Any:
        """Run when chain errors.

        Args:
            error: The error that occurred.
            run_id: The ID of the current run.
            parent_run_id: The ID of the parent run.
            **kwargs: Additional keyword arguments.
        """