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_persist_run_single() — langchain Function Reference

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

Function python Observability Tracers calls 2 called by 7

Entity Profile

Dependency Diagram

graph TD
  cf43defe_cb35_deb4_9782_55f973cdf6ca["_persist_run_single()"]
  178590bb_85ff_b79e_979a_46e5c3c5389f["LangChainTracer"]
  cf43defe_cb35_deb4_9782_55f973cdf6ca -->|defined in| 178590bb_85ff_b79e_979a_46e5c3c5389f
  47ffbd38_6b27_99ae_6f16_a6e3b801394b["_on_llm_start()"]
  47ffbd38_6b27_99ae_6f16_a6e3b801394b -->|calls| cf43defe_cb35_deb4_9782_55f973cdf6ca
  1f28ee91_49f8_e93f_e967_a9380e8e96a7["_on_chat_model_start()"]
  1f28ee91_49f8_e93f_e967_a9380e8e96a7 -->|calls| cf43defe_cb35_deb4_9782_55f973cdf6ca
  522bf4a7_0f10_4669_22e7_ff30c35a9f71["_on_chain_start()"]
  522bf4a7_0f10_4669_22e7_ff30c35a9f71 -->|calls| cf43defe_cb35_deb4_9782_55f973cdf6ca
  6fa418f3_cafe_a81c_2caa_db95b1a520ff["_on_chain_end()"]
  6fa418f3_cafe_a81c_2caa_db95b1a520ff -->|calls| cf43defe_cb35_deb4_9782_55f973cdf6ca
  bd21d245_281c_d787_ba7a_a842618eec60["_on_chain_error()"]
  bd21d245_281c_d787_ba7a_a842618eec60 -->|calls| cf43defe_cb35_deb4_9782_55f973cdf6ca
  d8d4c973_937d_41b6_3e71_1c12004709bc["_on_tool_start()"]
  d8d4c973_937d_41b6_3e71_1c12004709bc -->|calls| cf43defe_cb35_deb4_9782_55f973cdf6ca
  d17d790f_24b9_b1a6_f604_2cfa093ab528["_on_retriever_start()"]
  d17d790f_24b9_b1a6_f604_2cfa093ab528 -->|calls| cf43defe_cb35_deb4_9782_55f973cdf6ca
  e7870e44_5a4c_21ed_c102_454d33a1b0c4["_get_tags()"]
  cf43defe_cb35_deb4_9782_55f973cdf6ca -->|calls| e7870e44_5a4c_21ed_c102_454d33a1b0c4
  2c07d5a6_0b43_cd17_8e75_6b8d83c1e656["log_error_once()"]
  cf43defe_cb35_deb4_9782_55f973cdf6ca -->|calls| 2c07d5a6_0b43_cd17_8e75_6b8d83c1e656
  style cf43defe_cb35_deb4_9782_55f973cdf6ca fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/tracers/langchain.py lines 242–255

    def _persist_run_single(self, run: Run) -> None:
        """Persist a run."""
        if run.extra.get("__disabled"):
            return
        try:
            run.extra["runtime"] = get_runtime_environment()
            run.tags = self._get_tags(run)
            if run.ls_client is not self.client:
                run.ls_client = self.client
            run.post()
        except Exception as e:
            # Errors are swallowed by the thread executor so we need to log them here
            log_error_once("post", e)
            raise

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Defined In

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Called By

Source

Frequently Asked Questions

What does _persist_run_single() do?
_persist_run_single() is a function in the langchain codebase, defined in libs/core/langchain_core/tracers/langchain.py.
Where is _persist_run_single() defined?
_persist_run_single() is defined in libs/core/langchain_core/tracers/langchain.py at line 242.
What does _persist_run_single() call?
_persist_run_single() calls 2 function(s): _get_tags, log_error_once.
What calls _persist_run_single()?
_persist_run_single() is called by 7 function(s): _on_chain_end, _on_chain_error, _on_chain_start, _on_chat_model_start, _on_llm_start, _on_retriever_start, _on_tool_start.

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