_create_retrieval_run() — langchain Function Reference

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

Function python Observability Tracers

Entity Profile

Observability→ Tracers→ _create_retrieval_run() — langchain Function Reference

Dependency Diagram

graph TD
  8f738c08_e29f_8f67_37c7_6a802afe69fc["_create_retrieval_run()"]
  70348e44_de0f_ccb4_c06a_8453289ed93e["_TracerCore"]
  8f738c08_e29f_8f67_37c7_6a802afe69fc -->|defined in| 70348e44_de0f_ccb4_c06a_8453289ed93e
  style 8f738c08_e29f_8f67_37c7_6a802afe69fc fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/tracers/core.py lines 482–509

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