on_retriever_end() — langchain Function Reference

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

Function python Observability Tracers calls 3 called by 1

Entity Profile

Observability→ Tracers→ on_retriever_end() — langchain Function Reference

Dependency Diagram

graph TD
  dd74ebdd_0815_8034_9cc9_bd0477479388["on_retriever_end()"]
  0f6b3261_31fa_c34e_ca33_cb141bdf78ff["BaseTracer"]
  dd74ebdd_0815_8034_9cc9_bd0477479388 -->|defined in| 0f6b3261_31fa_c34e_ca33_cb141bdf78ff
  79b77983_02f3_5ce1_e3b6_b81546f14738["on_retriever_end()"]
  79b77983_02f3_5ce1_e3b6_b81546f14738 -->|calls| dd74ebdd_0815_8034_9cc9_bd0477479388
  9191b24f_a202_df21_16c5_e2608083aef8["_end_trace()"]
  dd74ebdd_0815_8034_9cc9_bd0477479388 -->|calls| 9191b24f_a202_df21_16c5_e2608083aef8
  b4ff7b44_e60f_4f8a_171b_432106ae9621["_on_retriever_end()"]
  dd74ebdd_0815_8034_9cc9_bd0477479388 -->|calls| b4ff7b44_e60f_4f8a_171b_432106ae9621
  79b77983_02f3_5ce1_e3b6_b81546f14738["on_retriever_end()"]
  dd74ebdd_0815_8034_9cc9_bd0477479388 -->|calls| 79b77983_02f3_5ce1_e3b6_b81546f14738
  style dd74ebdd_0815_8034_9cc9_bd0477479388 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/tracers/base.py lines 501–520

    def on_retriever_end(
        self, documents: Sequence[Document], *, run_id: UUID, **kwargs: Any
    ) -> Run:
        """Run when the `Retriever` ends running.

        Args:
            documents: The documents.
            run_id: The run ID.
            **kwargs: Additional arguments.

        Returns:
            The run.
        """
        retrieval_run = self._complete_retrieval_run(
            documents=documents,
            run_id=run_id,
        )
        self._end_trace(retrieval_run)
        self._on_retriever_end(retrieval_run)
        return retrieval_run