_create_chain_run() — langchain Function Reference

Architecture documentation for the _create_chain_run() function in core.py from the langchain codebase.

Function python Observability Tracers calls 1

Entity Profile

Observability→ Tracers→ _create_chain_run() — langchain Function Reference

Dependency Diagram

graph TD
  661a0fc7_ad5f_1239_9a25_773c9e7d67c4["_create_chain_run()"]
  70348e44_de0f_ccb4_c06a_8453289ed93e["_TracerCore"]
  661a0fc7_ad5f_1239_9a25_773c9e7d67c4 -->|defined in| 70348e44_de0f_ccb4_c06a_8453289ed93e
  3d4202d3_affb_7a43_051f_ea5bb9a0f713["_get_chain_inputs()"]
  661a0fc7_ad5f_1239_9a25_773c9e7d67c4 -->|calls| 3d4202d3_affb_7a43_051f_ea5bb9a0f713
  style 661a0fc7_ad5f_1239_9a25_773c9e7d67c4 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/tracers/core.py lines 329–357

    def _create_chain_run(
        self,
        serialized: dict[str, Any],
        inputs: dict[str, Any],
        run_id: UUID,
        tags: list[str] | None = None,
        parent_run_id: UUID | None = None,
        metadata: dict[str, Any] | None = None,
        run_type: str | None = None,
        name: str | None = None,
        **kwargs: Any,
    ) -> Run:
        """Create a chain Run."""
        start_time = datetime.now(timezone.utc)
        if metadata:
            kwargs.update({"metadata": metadata})
        return Run(
            id=run_id,
            parent_run_id=parent_run_id,
            serialized=serialized,
            inputs=self._get_chain_inputs(inputs),
            extra=kwargs,
            events=[{"name": "start", "time": start_time}],
            start_time=start_time,
            child_runs=[],
            run_type=run_type or "chain",
            name=name,
            tags=tags or [],
        )