CallbackManagerForRetrieverRun Class — langchain Architecture
Architecture documentation for the CallbackManagerForRetrieverRun class in manager.py from the langchain codebase.
Entity Profile
Dependency Diagram
graph TD ccc3c744_7e56_b37d_73f0_c29034f18ead["CallbackManagerForRetrieverRun"] e85ab975_2820_2512_9967_d5636d6c818a["ParentRunManager"] ccc3c744_7e56_b37d_73f0_c29034f18ead -->|extends| e85ab975_2820_2512_9967_d5636d6c818a 56648039_2eaa_a31a_370d_3cf895834f0a["RetrieverManagerMixin"] ccc3c744_7e56_b37d_73f0_c29034f18ead -->|extends| 56648039_2eaa_a31a_370d_3cf895834f0a 35cf5db6_bcb1_b854_6ebb_5e0368e51b58["manager.py"] ccc3c744_7e56_b37d_73f0_c29034f18ead -->|defined in| 35cf5db6_bcb1_b854_6ebb_5e0368e51b58 4908439f_ee01_a166_b4fb_361e4ba63f23["on_retriever_end()"] ccc3c744_7e56_b37d_73f0_c29034f18ead -->|method| 4908439f_ee01_a166_b4fb_361e4ba63f23 08fddf19_1b68_3da8_35a1_69582e179a3b["on_retriever_error()"] ccc3c744_7e56_b37d_73f0_c29034f18ead -->|method| 08fddf19_1b68_3da8_35a1_69582e179a3b
Relationship Graph
Source Code
libs/core/langchain_core/callbacks/manager.py lines 1175–1226
class CallbackManagerForRetrieverRun(ParentRunManager, RetrieverManagerMixin):
"""Callback manager for retriever run."""
def on_retriever_end(
self,
documents: Sequence[Document],
**kwargs: Any,
) -> None:
"""Run when retriever ends running.
Args:
documents: The retrieved documents.
**kwargs: Additional keyword arguments.
"""
if not self.handlers:
return
handle_event(
self.handlers,
"on_retriever_end",
"ignore_retriever",
documents,
run_id=self.run_id,
parent_run_id=self.parent_run_id,
tags=self.tags,
**kwargs,
)
def on_retriever_error(
self,
error: BaseException,
**kwargs: Any,
) -> None:
"""Run when retriever errors.
Args:
error: The error.
**kwargs: Additional keyword arguments.
"""
if not self.handlers:
return
handle_event(
self.handlers,
"on_retriever_error",
"ignore_retriever",
error,
run_id=self.run_id,
parent_run_id=self.parent_run_id,
tags=self.tags,
**kwargs,
)Source
Frequently Asked Questions
What is the CallbackManagerForRetrieverRun class?
CallbackManagerForRetrieverRun is a class in the langchain codebase, defined in libs/core/langchain_core/callbacks/manager.py.
Where is CallbackManagerForRetrieverRun defined?
CallbackManagerForRetrieverRun is defined in libs/core/langchain_core/callbacks/manager.py at line 1175.
What does CallbackManagerForRetrieverRun extend?
CallbackManagerForRetrieverRun extends ParentRunManager, RetrieverManagerMixin.
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