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Pythonlangchain-corecallbacksmanagerAsyncCallbackManageron_retriever_start

Method●Since v0.1

on_retriever_start

Copy

on_retriever_start(
  self,
  serialized: dict[str, Any] | None,
  query: str

View source on GitHub

,

run_id

:

|

None

=

None

,

parent_run_id

:

|

None

=

None

,

**

kwargs

:

=

{

}

)

->

AsyncCallbackManagerForRetrieverRun

Parameters

Name	Type	Description
`serialized`*	`dict[str, Any] \| None`	The serialized retriever.
`query`*	`str`	The query.
`run_id`	`UUID \| None`	Default:`None`
`parent_run_id`	`UUID \| None`	Default:`None`
`**kwargs`	`Any`	Default:`{}`

Run when the retriever starts running.

The ID of the run.

The ID of the parent run.

Additional keyword arguments.